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SUCCESS\n\nhttp://cv.jenkins.couchbase.com/job/ep-engine-gerrit-master/1616/ : SUCCESS","accounts_in_message":[],"_revision_number":11},{"id":"d1b10a3faf4e72d5bf1847d83ce02af1d3c48d09","author":{"_account_id":1001547,"name":"Dan Owen","email":"owend@couchbase.com","username":"owend","avatars":[{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d32","height":32},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d56","height":56},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d100","height":100},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d120","height":120}]},"date":"2016-10-19 13:32:21.000000000","message":"Patch Set 11:\n\n(1 comment)","accounts_in_message":[],"_revision_number":11},{"id":"757a801b8836f40ffc874d24eafa049cfe1c5731","author":{"_account_id":1001547,"name":"Dan Owen","email":"owend@couchbase.com","username":"owend","avatars":[{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d32","height":32},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d56","height":56},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d100","height":100},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d120","height":120}]},"date":"2016-10-19 13:38:46.000000000","message":"Patch Set 11:\n\nExanding a little on the comment.  The reason I believe get_stats_mutex is required, is take the following example, where we have two threads executing get_stats (function at line 1161).\n\nIn thread1 we have just returned from h1-\u003eget_stats (line 1173) but before continuing execution of the function, thread2 executes the block of code at line 1163 - clearing out the actual_stat_value.  When thread1 resumes to return actual_stat_value it is now empty.","accounts_in_message":[],"_revision_number":11},{"id":"73e62f2c1b5dddf4a68a1d3d54b00065dfcb4ef3","author":{"_account_id":1000966,"name":"Dave Rigby","email":"daver@couchbase.com","username":"drigby","avatars":[{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d32","height":32},{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d56","height":56},{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d100","height":100},{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d120","height":120}]},"date":"2016-10-19 13:45:36.000000000","message":"Patch Set 11:\n\n(1 comment)","accounts_in_message":[],"_revision_number":11},{"id":"5177b4f1aa9538c4334541029ed75bd8d6906430","author":{"_account_id":1000966,"name":"Dave Rigby","email":"daver@couchbase.com","username":"drigby","avatars":[{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d32","height":32},{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d56","height":56},{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d100","height":100},{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d120","height":120}]},"date":"2016-10-19 13:49:08.000000000","message":"Patch Set 11:\n\nAlso - from the TSan report I don\u0027t see how a std::string is being assigned - add_casted_stat doesn\u0027t do anything with strings. Is that a Debug backtrace? if not does the Debug one show any more info?\n\nI suspect you\u0027re hitting the std::string COW bug...","accounts_in_message":[],"_revision_number":11},{"id":"02da0ba5bf6ee6b4cee5c5c79d10d0b758a6272c","author":{"_account_id":1000966,"name":"Dave Rigby","email":"daver@couchbase.com","username":"drigby","avatars":[{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d32","height":32},{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d56","height":56},{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d100","height":100},{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d120","height":120}]},"date":"2016-10-19 13:50:32.000000000","message":"Patch Set 11:\n\n\u003e Exanding a little on the comment.  The reason I believe\n \u003e get_stats_mutex is required, is take the following example, where\n \u003e we have two threads executing get_stats (function at line 1161).\n \u003e \n \u003e In thread1 we have just returned from h1-\u003eget_stats (line 1173) but\n \u003e before continuing execution of the function, thread2 executes the\n \u003e block of code at line 1163 - clearing out the actual_stat_value. \n \u003e When thread1 resumes to return actual_stat_value it is now empty.\n\nSo in that case it sounds like we need to revert the changes in get_stats to hold the (old) vals_mutex for the duration of that function call (as it used to).","accounts_in_message":[],"_revision_number":11},{"id":"bab2cbe108a6b22761a6e32952339bb1ac7a7810","author":{"_account_id":1001547,"name":"Dan 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\u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/10 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/10 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.couchbase.org/ep-engine refs/changes/13/68813/10","Reset To":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/10 \u0026\u0026 git reset --hard FETCH_HEAD"}}},"commit":{"parents":[{"commit":"29bb51e4a6961e89b215aa8a6e7d2a9d3747b7ed","subject":"Use \u003d\u003d and compare instead of strncmp in getStats"}],"author":{"name":"Daniel Owen","email":"owend@couchbase.com","date":"2016-10-17 16:34:08.000000000","tz":60},"committer":{"name":"Daniel Owen","email":"owend@couchbase.com","date":"2016-10-19 12:50:22.000000000","tz":60},"subject":"MB-21379: Ensure vals data structure is thread safe in ep_testsuite","message":"MB-21379: Ensure vals data structure is thread safe in ep_testsuite\n\nWhen developing additional stats test for ep-engine_perfsuite, the\nfollowing data race was uncovered.\n\nThe patch ensures that access to vals, requested_stat_name and\nactual_stat_value are protected with a mutex.  It has been\nconfirmed that with this patch the ThreadSanitizer issue no longer\noccurs.\n\n30: Running [0007/0009]: Stat latency with set executed in separate thread (couchstore)...\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n30: WARNING: ThreadSanitizer: data race (pid\u003d35923)\n30:   Write of size 1 at 0x7d180004aff2 by thread T15:\n30:     #0 memcpy \u003cnull\u003e (libtsan.so.0+0x00000002617a)\n30:     #1 std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e::_M_assign(std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (libstdc++.so.6+0x00000011f3c1)\n30:     #2 STATWRITER_NAMESPACE::add_casted_stat(char const*, char const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:39 (ep.so+0x0000000e5c04)\n30:     #3 StatCheckpointVisitor::addCheckpointStat(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), EventuallyPersistentStore*, RCPtr\u003cVBucket\u003e\u0026) \u003cnull\u003e (ep.so+0x0000001c3088)\n30:     #4 StatCheckpointVisitor::visitBucket(RCPtr\u003cVBucket\u003e\u0026) \u003cnull\u003e (ep.so+0x0000001c2f79)\n30:     #5 EventuallyPersistentStore::visit(VBucketVisitor\u0026) /home/owend/master/ep-engine/src/ep.cc:3837 (ep.so+0x000000175389)\n30:     #6 StatCheckpointTask::run() \u003cnull\u003e (ep.so+0x0000001c33a9)\n30:     #7 ExecutorThread::run() /home/owend/master/ep-engine/src/executorthread.cc:113 (ep.so+0x0000001ec745)\n30:     #8 launch_executor_thread /home/owend/master/ep-engine/src/executorthread.cc:31 (ep.so+0x0000001ebea8)\n30:     #9 CouchbaseThread::run() /home/owend/master/platform/src/cb_pthreads.cc:58 (libplatform_so.so.0.1.0+0x00000000c9c7)\n30:     #10 platform_thread_wrap /home/owend/master/platform/src/cb_pthreads.cc:71 (libplatform_so.so.0.1.0+0x00000000affe)\n30:     #11 \u003cnull\u003e \u003cnull\u003e (libtsan.so.0+0x0000000230d9)\n30:\n30:   Previous write of size 1 at 0x7d180004aff2 by thread T16:\n30:     #0 memcpy \u003cnull\u003e (libtsan.so.0+0x00000002617a)\n30:     #1 std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e::_M_assign(std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (libstdc++.so.6+0x00000011f3c1)\n30:     #2 STATWRITER_NAMESPACE::add_casted_stat(char const*, char const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:39 (ep.so+0x0000000e5c04)\n30:     #3 StatCheckpointVisitor::addCheckpointStat(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), EventuallyPersistentStore*, RCPtr\u003cVBucket\u003e\u0026) \u003cnull\u003e (ep.so+0x0000001c3088)\n30:     #4 StatCheckpointVisitor::visitBucket(RCPtr\u003cVBucket\u003e\u0026) \u003cnull\u003e (ep.so+0x0000001c2f79)\n30:     #5 EventuallyPersistentStore::visit(VBucketVisitor\u0026) /home/owend/master/ep-engine/src/ep.cc:3837 (ep.so+0x000000175389)\n30:     #6 StatCheckpointTask::run() \u003cnull\u003e (ep.so+0x0000001c33a9)\n30:     #7 ExecutorThread::run() /home/owend/master/ep-engine/src/executorthread.cc:113 (ep.so+0x0000001ec745)\n30:     #8 launch_executor_thread /home/owend/master/ep-engine/src/executorthread.cc:31 (ep.so+0x0000001ebea8)\n30:     #9 CouchbaseThread::run() /home/owend/master/platform/src/cb_pthreads.cc:58 (libplatform_so.so.0.1.0+0x00000000c9c7)\n30:     #10 platform_thread_wrap /home/owend/master/platform/src/cb_pthreads.cc:71 (libplatform_so.so.0.1.0+0x00000000affe)\n30:     #11 \u003cnull\u003e \u003cnull\u003e (libtsan.so.0+0x0000000230d9)\n\nThe patch renames the vals_mutex to be get_stats_mutex which protects\nagainst parallel calls to get_stats.  In addition a new vals_mutex is\ncreated which protects at a fine level of granuality the vals map and\nthe strings requested_stat_name and actual_stat_value from parallel\naccesses.\n\nChange-Id: I7bdc847c0913244409fa044e312d53b484dc2dab\n"},"parents_data":[{"branch_name":"refs/heads/master","commit_id":"29bb51e4a6961e89b215aa8a6e7d2a9d3747b7ed","is_merged_in_target_branch":true,"change_id":"I0b8fb8169d84698e293779c8e7d2bb6e75dc9686","change_number":68473,"patch_set_number":27,"change_status":"MERGED"}],"branch":"refs/heads/master"},"16fddcd1e6e6a26fe42cbace76284a0f7894d808":{"kind":"REWORK","_number":11,"created":"2016-10-19 12:57:01.000000000","uploader":{"_account_id":1001547,"name":"Dan Owen","email":"owend@couchbase.com","username":"owend","avatars":[{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d32","height":32},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d56","height":56},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d100","height":100},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d120","height":120}]},"ref":"refs/changes/13/68813/11","fetch":{"anonymous http":{"url":"https://review.couchbase.org/ep-engine","ref":"refs/changes/13/68813/11","commands":{"Branch":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/11 \u0026\u0026 git checkout -b change-68813 FETCH_HEAD","Checkout":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/11 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/11 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/11 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.couchbase.org/ep-engine refs/changes/13/68813/11","Reset To":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/11 \u0026\u0026 git reset --hard FETCH_HEAD"}}},"commit":{"parents":[{"commit":"29bb51e4a6961e89b215aa8a6e7d2a9d3747b7ed","subject":"Use \u003d\u003d and compare instead of strncmp in getStats"}],"author":{"name":"Daniel Owen","email":"owend@couchbase.com","date":"2016-10-17 16:34:08.000000000","tz":60},"committer":{"name":"Daniel Owen","email":"owend@couchbase.com","date":"2016-10-19 12:56:26.000000000","tz":60},"subject":"MB-21379: Ensure vals data structure is thread safe in ep_testsuite","message":"MB-21379: Ensure vals data structure is thread safe in ep_testsuite\n\nWhen developing additional stats test for ep-engine_perfsuite, the\nfollowing data race was uncovered.\n\nThe patch ensures that access to vals, requested_stat_name and\nactual_stat_value are protected with a mutex.  It has been\nconfirmed that with this patch the ThreadSanitizer issue no longer\noccurs.\n\n30: Running [0007/0009]: Stat latency with set executed in separate thread (couchstore)...\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n30: WARNING: ThreadSanitizer: data race (pid\u003d35923)\n30:   Write of size 1 at 0x7d180004aff2 by thread T15:\n30:     #0 memcpy \u003cnull\u003e (libtsan.so.0+0x00000002617a)\n30:     #1 std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e::_M_assign(std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (libstdc++.so.6+0x00000011f3c1)\n30:     #2 STATWRITER_NAMESPACE::add_casted_stat(char const*, char const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:39 (ep.so+0x0000000e5c04)\n30:     #3 StatCheckpointVisitor::addCheckpointStat(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), EventuallyPersistentStore*, RCPtr\u003cVBucket\u003e\u0026) \u003cnull\u003e (ep.so+0x0000001c3088)\n30:     #4 StatCheckpointVisitor::visitBucket(RCPtr\u003cVBucket\u003e\u0026) \u003cnull\u003e (ep.so+0x0000001c2f79)\n30:     #5 EventuallyPersistentStore::visit(VBucketVisitor\u0026) /home/owend/master/ep-engine/src/ep.cc:3837 (ep.so+0x000000175389)\n30:     #6 StatCheckpointTask::run() \u003cnull\u003e (ep.so+0x0000001c33a9)\n30:     #7 ExecutorThread::run() /home/owend/master/ep-engine/src/executorthread.cc:113 (ep.so+0x0000001ec745)\n30:     #8 launch_executor_thread /home/owend/master/ep-engine/src/executorthread.cc:31 (ep.so+0x0000001ebea8)\n30:     #9 CouchbaseThread::run() /home/owend/master/platform/src/cb_pthreads.cc:58 (libplatform_so.so.0.1.0+0x00000000c9c7)\n30:     #10 platform_thread_wrap /home/owend/master/platform/src/cb_pthreads.cc:71 (libplatform_so.so.0.1.0+0x00000000affe)\n30:     #11 \u003cnull\u003e \u003cnull\u003e (libtsan.so.0+0x0000000230d9)\n30:\n30:   Previous write of size 1 at 0x7d180004aff2 by thread T16:\n30:     #0 memcpy \u003cnull\u003e (libtsan.so.0+0x00000002617a)\n30:     #1 std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e::_M_assign(std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (libstdc++.so.6+0x00000011f3c1)\n30:     #2 STATWRITER_NAMESPACE::add_casted_stat(char const*, char const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:39 (ep.so+0x0000000e5c04)\n30:     #3 StatCheckpointVisitor::addCheckpointStat(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), EventuallyPersistentStore*, RCPtr\u003cVBucket\u003e\u0026) \u003cnull\u003e (ep.so+0x0000001c3088)\n30:     #4 StatCheckpointVisitor::visitBucket(RCPtr\u003cVBucket\u003e\u0026) \u003cnull\u003e (ep.so+0x0000001c2f79)\n30:     #5 EventuallyPersistentStore::visit(VBucketVisitor\u0026) /home/owend/master/ep-engine/src/ep.cc:3837 (ep.so+0x000000175389)\n30:     #6 StatCheckpointTask::run() \u003cnull\u003e (ep.so+0x0000001c33a9)\n30:     #7 ExecutorThread::run() /home/owend/master/ep-engine/src/executorthread.cc:113 (ep.so+0x0000001ec745)\n30:     #8 launch_executor_thread /home/owend/master/ep-engine/src/executorthread.cc:31 (ep.so+0x0000001ebea8)\n30:     #9 CouchbaseThread::run() /home/owend/master/platform/src/cb_pthreads.cc:58 (libplatform_so.so.0.1.0+0x00000000c9c7)\n30:     #10 platform_thread_wrap /home/owend/master/platform/src/cb_pthreads.cc:71 (libplatform_so.so.0.1.0+0x00000000affe)\n30:     #11 \u003cnull\u003e \u003cnull\u003e (libtsan.so.0+0x0000000230d9)\n\nThe patch renames the vals_mutex to be get_stats_mutex which protects\nagainst parallel calls to get_stats.  In addition a new vals_mutex is\ncreated which protects at a fine level of granuality the vals map and\nthe strings requested_stat_name and actual_stat_value from parallel\naccesses.\n\nChange-Id: I7bdc847c0913244409fa044e312d53b484dc2dab\n"},"parents_data":[{"branch_name":"refs/heads/master","commit_id":"29bb51e4a6961e89b215aa8a6e7d2a9d3747b7ed","is_merged_in_target_branch":true,"change_id":"I0b8fb8169d84698e293779c8e7d2bb6e75dc9686","change_number":68473,"patch_set_number":27,"change_status":"MERGED"}],"branch":"refs/heads/master"},"5c3da5b221b75f57a6de77fcbe57701fae48dd3d":{"kind":"NO_CODE_CHANGE","_number":12,"created":"2016-10-19 14:57:42.000000000","uploader":{"_account_id":1001547,"name":"Dan Owen","email":"owend@couchbase.com","username":"owend","avatars":[{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d32","height":32},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d56","height":56},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d100","height":100},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d120","height":120}]},"ref":"refs/changes/13/68813/12","fetch":{"anonymous http":{"url":"https://review.couchbase.org/ep-engine","ref":"refs/changes/13/68813/12","commands":{"Branch":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/12 \u0026\u0026 git checkout -b change-68813 FETCH_HEAD","Checkout":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/12 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/12 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/12 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.couchbase.org/ep-engine refs/changes/13/68813/12","Reset To":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/12 \u0026\u0026 git reset --hard FETCH_HEAD"}}},"commit":{"parents":[{"commit":"29bb51e4a6961e89b215aa8a6e7d2a9d3747b7ed","subject":"Use \u003d\u003d and compare instead of strncmp in getStats"}],"author":{"name":"Daniel Owen","email":"owend@couchbase.com","date":"2016-10-17 16:34:08.000000000","tz":60},"committer":{"name":"Daniel Owen","email":"owend@couchbase.com","date":"2016-10-19 14:56:37.000000000","tz":60},"subject":"MB-21379: Ensure vals data structure is thread safe in ep_testsuite","message":"MB-21379: Ensure vals data structure is thread safe in ep_testsuite\n\nWhen developing additional stats test for ep-engine_perfsuite, the\nfollowing data race was uncovered.\n\nThe patch ensures that access to vals, requested_stat_name and\nactual_stat_value are protected with a mutex.  It has been\nconfirmed that with this patch the ThreadSanitizer issue no longer\noccurs.\n\n30: WARNING: ThreadSanitizer: data race (pid\u003d42065)\n30:   Read of size 8 at 0x7d1800060a38 by thread T18 (mutexes: write M1704):\n30:     #0 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_S_right(std::_Rb_tree_node_base*) \u003cnull\u003e (engine_testapp+0x00000049c503)\n30:     #1 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_lower_bound(std::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e*, std::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e*, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x0000004a30db)\n30:     #2 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::lower_bound(std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x00000049c5f6)\n30:     #3 std::map\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::lower_bound(std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x000000499047)\n30:     #4 std::map\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::operator[](std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x00000048e3ba)\n30:     #5 add_stats /home/owend/master/ep-engine/tests/ep_test_apis.cc:236 (ep_perfsuite.so+0x00000008f5b9)\n30:     #6 STATWRITER_NAMESPACE::add_casted_stat(char const*, char const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:39 (ep.so+0x0000000e5673)\n30:     #7 StatCheckpointVisitor::addCheckpointStat(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), EventuallyPersistentStore*, RCPtr\u003cVBucket\u003e\u0026) \u003cnull\u003e (ep.so+0x0000001c120c)\n30:     #8 StatCheckpointVisitor::visitBucket(RCPtr\u003cVBucket\u003e\u0026) \u003cnull\u003e (ep.so+0x0000001c10e5)\n30:     #9 EventuallyPersistentStore::visit(VBucketVisitor\u0026) /home/owend/master/ep-engine/src/ep.cc:3796 (ep.so+0x000000174559)\n30:     #10 StatCheckpointTask::run() \u003cnull\u003e (ep.so+0x0000001c155b)\n30:     #11 ExecutorThread::run() /home/owend/master/ep-engine/src/executorthread.cc:113 (ep.so+0x0000001ea96d)\n30:     #12 launch_executor_thread /home/owend/master/ep-engine/src/executorthread.cc:31 (ep.so+0x0000001ea0d0)\n30:     #13 CouchbaseThread::run() /home/owend/master/platform/src/cb_pthreads.cc:58 (libplatform_so.so.0.1.0+0x00000000c9c7)\n30:     #14 platform_thread_wrap /home/owend/master/platform/src/cb_pthreads.cc:71 (libplatform_so.so.0.1.0+0x00000000affe)\n30:     #15 \u003cnull\u003e \u003cnull\u003e (libtsan.so.0+0x0000000230d9)\n30:\n30:   Previous write of size 8 at 0x7d1800060a38 by main thread (mutexes: write M1575):\n30:     #0 operator new(unsigned long) \u003cnull\u003e (libtsan.so.0+0x000000025a33)\n30:     #1 __gnu_cxx::new_allocator\u003cstd::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::allocate(unsigned long, void const*) \u003cnull\u003e (engine_testapp+0x0000004a6ca7)\n30:     #2 std::allocator_traits\u003cstd::allocator\u003cstd::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e \u003e::allocate(std::allocator\u003cstd::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e\u0026, unsigned long) \u003cnull\u003e (engine_testapp+0x0000004a5168)\n30:     #3 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_get_node() \u003cnull\u003e (engine_testapp+0x0000004a316f)\n30:     #4 std::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e* std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_create_node\u003cstd::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e, std::tuple\u003c\u003e \u003e(std::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e\u0026\u0026, std::tuple\u003c\u003e\u0026\u0026) \u003cnull\u003e (engine_testapp+0x00000049c6b4)\n30:     #5 std::_Rb_tree_iterator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_emplace_hint_unique\u003cstd::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e, std::tuple\u003c\u003e \u003e(std::_Rb_tree_const_iterator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e\u0026\u0026, std::tuple\u003c\u003e\u0026\u0026) \u003cnull\u003e (engine_testapp+0x00000049928e)\n30:     #6 std::map\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::operator[](std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x00000048e488)\n30:     #7 add_stats /home/owend/master/ep-engine/tests/ep_test_apis.cc:236 (ep_perfsuite.so+0x00000008f5b9)\n30:     #8 STATWRITER_NAMESPACE::add_casted_stat(char const*, char const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:39 (ep.so+0x0000000e5673)\n30:     #9 void STATWRITER_NAMESPACE::add_casted_stat\u003cunsigned long\u003e(char const*, unsigned long const\u0026, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:48 (ep.so+0x0000000e96ae)\n30:     #10 EventuallyPersistentEngine::addSeqnoVbStats(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), RCPtr\u003cVBucket\u003e const\u0026) /home/owend/master/ep-engine/src/ep_engine.cc:4445 (ep.so+0x0000001ad56d)\n30:     #11 EventuallyPersistentEngine::doSeqnoStats(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), char const*, int) /home/owend/master/ep-engine/src/ep_engine.cc:4490 (ep.so+0x0000001ad95f)\n30:     #12 EventuallyPersistentEngine::getStats(void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/owend/master/ep-engine/src/ep_engine.cc:4595 (ep.so+0x0000001ae4de)\n30:     #13 EvpGetStats /home/owend/master/ep-engine/src/ep_engine.cc:232 (ep.so+0x00000019851e)\n30:     #14 ENGINE_ERROR_CODE std::_Bind\u003cENGINE_ERROR_CODE (*(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)))(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*))\u003e::__call\u003cENGINE_ERROR_CODE, , 0ul, 1ul, 2ul, 3ul, 4ul\u003e(std::tuple\u003c\u003e\u0026\u0026, std::_Index_tuple\u003c0ul, 1ul, 2ul, 3ul, 4ul\u003e) \u003cnull\u003e (engine_testapp+0x00000049f211)\n30:     #15 ENGINE_ERROR_CODE std::_Bind\u003cENGINE_ERROR_CODE (*(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)))(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*))\u003e::operator()\u003c, ENGINE_ERROR_CODE\u003e() \u003cnull\u003e (engine_testapp+0x00000049aa02)\n30:     #16 std::_Function_handler\u003cENGINE_ERROR_CODE (), std::_Bind\u003cENGINE_ERROR_CODE (*(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)))(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*))\u003e \u003e::_M_invoke(std::_Any_data const\u0026) \u003cnull\u003e (engine_testapp+0x00000049145b)\n30:     #17 std::function\u003cENGINE_ERROR_CODE ()\u003e::operator()() const \u003cnull\u003e (engine_testapp+0x000000484e28)\n30:     #18 call_engine_and_handle_EWOULDBLOCK /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:127 (engine_testapp+0x00000047cf00)\n30:     #19 mock_get_stats /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:220 (engine_testapp+0x00000047d896)\n30:     #20 perf_stat_latency_core /home/owend/master/ep-engine/tests/ep_perfsuite.cc:1238 (ep_perfsuite.so+0x000000063d3d)\n30:     #21 perf_stat_latency /home/owend/master/ep-engine/tests/ep_perfsuite.cc:1306 (ep_perfsuite.so+0x00000006427a)\n30:     #22 perf_slow_stat_latency_100vb /home/owend/master/ep-engine/tests/ep_perfsuite.cc:1365 (ep_perfsuite.so+0x00000006498c)\n30:     #23 execute_test /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:962 (engine_testapp+0x000000481776)\n30:     #24 main /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:1359 (engine_testapp+0x000000482ab1)\n\nThe patch renames the vals_mutex to be get_stats_mutex which protects\nagainst parallel calls to get_stats.  In addition a new vals_mutex is\ncreated which protects at a fine level of granuality the vals map and\nthe strings requested_stat_name and actual_stat_value from parallel\naccesses.\n\nChange-Id: I7bdc847c0913244409fa044e312d53b484dc2dab\n"},"parents_data":[{"branch_name":"refs/heads/master","commit_id":"29bb51e4a6961e89b215aa8a6e7d2a9d3747b7ed","is_merged_in_target_branch":true,"change_id":"I0b8fb8169d84698e293779c8e7d2bb6e75dc9686","change_number":68473,"patch_set_number":27,"change_status":"MERGED"}],"branch":"refs/heads/master"},"997aba8f47fe0211a32c4c79350e6669d0f8d9b1":{"kind":"REWORK","_number":13,"created":"2016-10-19 16:48:15.000000000","uploader":{"_account_id":1001547,"name":"Dan Owen","email":"owend@couchbase.com","username":"owend","avatars":[{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d32","height":32},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d56","height":56},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d100","height":100},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d120","height":120}]},"ref":"refs/changes/13/68813/13","fetch":{"anonymous http":{"url":"https://review.couchbase.org/ep-engine","ref":"refs/changes/13/68813/13","commands":{"Branch":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/13 \u0026\u0026 git checkout -b change-68813 FETCH_HEAD","Checkout":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/13 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/13 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/13 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.couchbase.org/ep-engine refs/changes/13/68813/13","Reset To":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/13 \u0026\u0026 git reset --hard FETCH_HEAD"}}},"commit":{"parents":[{"commit":"29bb51e4a6961e89b215aa8a6e7d2a9d3747b7ed","subject":"Use \u003d\u003d and compare instead of strncmp in getStats"}],"author":{"name":"Daniel Owen","email":"owend@couchbase.com","date":"2016-10-17 16:34:08.000000000","tz":60},"committer":{"name":"Daniel Owen","email":"owend@couchbase.com","date":"2016-10-19 16:47:55.000000000","tz":60},"subject":"MB-21379: Ensure vals data structure is thread safe in ep_testsuite","message":"MB-21379: Ensure vals data structure is thread safe in ep_testsuite\n\nWhen developing additional stats test for ep-engine_perfsuite, the\nfollowing data race was uncovered.\n\nThe patch ensures that access to vals, requested_stat_name and\nactual_stat_value are protected with a mutex.  It has been\nconfirmed that with this patch the ThreadSanitizer issue no longer\noccurs.\n\n30: WARNING: ThreadSanitizer: data race (pid\u003d42065)\n30:   Read of size 8 at 0x7d1800060a38 by thread T18 (mutexes: write M1704):\n30:     #0 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_S_right(std::_Rb_tree_node_base*) \u003cnull\u003e (engine_testapp+0x00000049c503)\n30:     #1 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_lower_bound(std::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e*, std::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e*, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x0000004a30db)\n30:     #2 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::lower_bound(std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x00000049c5f6)\n30:     #3 std::map\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::lower_bound(std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x000000499047)\n30:     #4 std::map\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::operator[](std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x00000048e3ba)\n30:     #5 add_stats /home/owend/master/ep-engine/tests/ep_test_apis.cc:236 (ep_perfsuite.so+0x00000008f5b9)\n30:     #6 STATWRITER_NAMESPACE::add_casted_stat(char const*, char const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:39 (ep.so+0x0000000e5673)\n30:     #7 StatCheckpointVisitor::addCheckpointStat(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), EventuallyPersistentStore*, RCPtr\u003cVBucket\u003e\u0026) \u003cnull\u003e (ep.so+0x0000001c120c)\n30:     #8 StatCheckpointVisitor::visitBucket(RCPtr\u003cVBucket\u003e\u0026) \u003cnull\u003e (ep.so+0x0000001c10e5)\n30:     #9 EventuallyPersistentStore::visit(VBucketVisitor\u0026) /home/owend/master/ep-engine/src/ep.cc:3796 (ep.so+0x000000174559)\n30:     #10 StatCheckpointTask::run() \u003cnull\u003e (ep.so+0x0000001c155b)\n30:     #11 ExecutorThread::run() /home/owend/master/ep-engine/src/executorthread.cc:113 (ep.so+0x0000001ea96d)\n30:     #12 launch_executor_thread /home/owend/master/ep-engine/src/executorthread.cc:31 (ep.so+0x0000001ea0d0)\n30:     #13 CouchbaseThread::run() /home/owend/master/platform/src/cb_pthreads.cc:58 (libplatform_so.so.0.1.0+0x00000000c9c7)\n30:     #14 platform_thread_wrap /home/owend/master/platform/src/cb_pthreads.cc:71 (libplatform_so.so.0.1.0+0x00000000affe)\n30:     #15 \u003cnull\u003e \u003cnull\u003e (libtsan.so.0+0x0000000230d9)\n30:\n30:   Previous write of size 8 at 0x7d1800060a38 by main thread (mutexes: write M1575):\n30:     #0 operator new(unsigned long) \u003cnull\u003e (libtsan.so.0+0x000000025a33)\n30:     #1 __gnu_cxx::new_allocator\u003cstd::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::allocate(unsigned long, void const*) \u003cnull\u003e (engine_testapp+0x0000004a6ca7)\n30:     #2 std::allocator_traits\u003cstd::allocator\u003cstd::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e \u003e::allocate(std::allocator\u003cstd::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e\u0026, unsigned long) \u003cnull\u003e (engine_testapp+0x0000004a5168)\n30:     #3 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_get_node() \u003cnull\u003e (engine_testapp+0x0000004a316f)\n30:     #4 std::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e* std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_create_node\u003cstd::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e, std::tuple\u003c\u003e \u003e(std::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e\u0026\u0026, std::tuple\u003c\u003e\u0026\u0026) \u003cnull\u003e (engine_testapp+0x00000049c6b4)\n30:     #5 std::_Rb_tree_iterator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_emplace_hint_unique\u003cstd::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e, std::tuple\u003c\u003e \u003e(std::_Rb_tree_const_iterator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e\u0026\u0026, std::tuple\u003c\u003e\u0026\u0026) \u003cnull\u003e (engine_testapp+0x00000049928e)\n30:     #6 std::map\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::operator[](std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x00000048e488)\n30:     #7 add_stats /home/owend/master/ep-engine/tests/ep_test_apis.cc:236 (ep_perfsuite.so+0x00000008f5b9)\n30:     #8 STATWRITER_NAMESPACE::add_casted_stat(char const*, char const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:39 (ep.so+0x0000000e5673)\n30:     #9 void STATWRITER_NAMESPACE::add_casted_stat\u003cunsigned long\u003e(char const*, unsigned long const\u0026, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:48 (ep.so+0x0000000e96ae)\n30:     #10 EventuallyPersistentEngine::addSeqnoVbStats(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), RCPtr\u003cVBucket\u003e const\u0026) /home/owend/master/ep-engine/src/ep_engine.cc:4445 (ep.so+0x0000001ad56d)\n30:     #11 EventuallyPersistentEngine::doSeqnoStats(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), char const*, int) /home/owend/master/ep-engine/src/ep_engine.cc:4490 (ep.so+0x0000001ad95f)\n30:     #12 EventuallyPersistentEngine::getStats(void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/owend/master/ep-engine/src/ep_engine.cc:4595 (ep.so+0x0000001ae4de)\n30:     #13 EvpGetStats /home/owend/master/ep-engine/src/ep_engine.cc:232 (ep.so+0x00000019851e)\n30:     #14 ENGINE_ERROR_CODE std::_Bind\u003cENGINE_ERROR_CODE (*(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)))(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*))\u003e::__call\u003cENGINE_ERROR_CODE, , 0ul, 1ul, 2ul, 3ul, 4ul\u003e(std::tuple\u003c\u003e\u0026\u0026, std::_Index_tuple\u003c0ul, 1ul, 2ul, 3ul, 4ul\u003e) \u003cnull\u003e (engine_testapp+0x00000049f211)\n30:     #15 ENGINE_ERROR_CODE std::_Bind\u003cENGINE_ERROR_CODE (*(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)))(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*))\u003e::operator()\u003c, ENGINE_ERROR_CODE\u003e() \u003cnull\u003e (engine_testapp+0x00000049aa02)\n30:     #16 std::_Function_handler\u003cENGINE_ERROR_CODE (), std::_Bind\u003cENGINE_ERROR_CODE (*(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)))(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*))\u003e \u003e::_M_invoke(std::_Any_data const\u0026) \u003cnull\u003e (engine_testapp+0x00000049145b)\n30:     #17 std::function\u003cENGINE_ERROR_CODE ()\u003e::operator()() const \u003cnull\u003e (engine_testapp+0x000000484e28)\n30:     #18 call_engine_and_handle_EWOULDBLOCK /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:127 (engine_testapp+0x00000047cf00)\n30:     #19 mock_get_stats /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:220 (engine_testapp+0x00000047d896)\n30:     #20 perf_stat_latency_core /home/owend/master/ep-engine/tests/ep_perfsuite.cc:1238 (ep_perfsuite.so+0x000000063d3d)\n30:     #21 perf_stat_latency /home/owend/master/ep-engine/tests/ep_perfsuite.cc:1306 (ep_perfsuite.so+0x00000006427a)\n30:     #22 perf_slow_stat_latency_100vb /home/owend/master/ep-engine/tests/ep_perfsuite.cc:1365 (ep_perfsuite.so+0x00000006498c)\n30:     #23 execute_test /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:962 (engine_testapp+0x000000481776)\n30:     #24 main /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:1359 (engine_testapp+0x000000482ab1)\n\nThe patch renames the vals_mutex to be get_stats_mutex which protects\nagainst parallel calls to get_stats.  In addition a new vals_mutex is\ncreated which protects at a fine level of granuality the vals map and\nthe strings requested_stat_name and actual_stat_value from parallel\naccesses.\n\nChange-Id: I7bdc847c0913244409fa044e312d53b484dc2dab\n"},"parents_data":[{"branch_name":"refs/heads/master","commit_id":"29bb51e4a6961e89b215aa8a6e7d2a9d3747b7ed","is_merged_in_target_branch":true,"change_id":"I0b8fb8169d84698e293779c8e7d2bb6e75dc9686","change_number":68473,"patch_set_number":27,"change_status":"MERGED"}],"branch":"refs/heads/master"},"5559df386f480fffaa2165cd525a7750bebba4a9":{"kind":"REWORK","_number":14,"created":"2016-10-19 17:32:39.000000000","uploader":{"_account_id":1001547,"name":"Dan Owen","email":"owend@couchbase.com","username":"owend","avatars":[{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d32","height":32},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d56","height":56},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d100","height":100},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d120","height":120}]},"ref":"refs/changes/13/68813/14","fetch":{"anonymous http":{"url":"https://review.couchbase.org/ep-engine","ref":"refs/changes/13/68813/14","commands":{"Branch":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/14 \u0026\u0026 git checkout -b change-68813 FETCH_HEAD","Checkout":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/14 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/14 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/14 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.couchbase.org/ep-engine refs/changes/13/68813/14","Reset To":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/14 \u0026\u0026 git reset --hard FETCH_HEAD"}}},"commit":{"parents":[{"commit":"29bb51e4a6961e89b215aa8a6e7d2a9d3747b7ed","subject":"Use \u003d\u003d and compare instead of strncmp in getStats"}],"author":{"name":"Daniel Owen","email":"owend@couchbase.com","date":"2016-10-17 16:34:08.000000000","tz":60},"committer":{"name":"Daniel Owen","email":"owend@couchbase.com","date":"2016-10-19 17:28:09.000000000","tz":60},"subject":"MB-21379: Ensure vals data structure is thread safe in ep_testsuite","message":"MB-21379: Ensure vals data structure is thread safe in ep_testsuite\n\nWhen developing additional stats test for ep-engine_perfsuite, the\nfollowing data race was uncovered.\n\nThe patch ensures that accesses to vals are protected with a mutex.\nAlso get_stat and get_histo_stat can only be called one at a time as\nthey use the three global variables (requested_stat_name,\nactual_stat_value and histogram_stat_int_value).  Therefore a secondary\nmutex is required to enforce this.\n\nIt has been confirmed that with this patch the ThreadSanitizer issue\nno longer occurs.\n\n30: WARNING: ThreadSanitizer: data race (pid\u003d42065)\n30:   Read of size 8 at 0x7d1800060a38 by thread T18 (mutexes: write M1704):\n30:     #0 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_S_right(std::_Rb_tree_node_base*) \u003cnull\u003e (engine_testapp+0x00000049c503)\n30:     #1 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_lower_bound(std::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e*, std::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e*, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x0000004a30db)\n30:     #2 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::lower_bound(std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x00000049c5f6)\n30:     #3 std::map\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::lower_bound(std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x000000499047)\n30:     #4 std::map\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::operator[](std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x00000048e3ba)\n30:     #5 add_stats /home/owend/master/ep-engine/tests/ep_test_apis.cc:236 (ep_perfsuite.so+0x00000008f5b9)\n30:     #6 STATWRITER_NAMESPACE::add_casted_stat(char const*, char const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:39 (ep.so+0x0000000e5673)\n30:     #7 StatCheckpointVisitor::addCheckpointStat(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), EventuallyPersistentStore*, RCPtr\u003cVBucket\u003e\u0026) \u003cnull\u003e (ep.so+0x0000001c120c)\n30:     #8 StatCheckpointVisitor::visitBucket(RCPtr\u003cVBucket\u003e\u0026) \u003cnull\u003e (ep.so+0x0000001c10e5)\n30:     #9 EventuallyPersistentStore::visit(VBucketVisitor\u0026) /home/owend/master/ep-engine/src/ep.cc:3796 (ep.so+0x000000174559)\n30:     #10 StatCheckpointTask::run() \u003cnull\u003e (ep.so+0x0000001c155b)\n30:     #11 ExecutorThread::run() /home/owend/master/ep-engine/src/executorthread.cc:113 (ep.so+0x0000001ea96d)\n30:     #12 launch_executor_thread /home/owend/master/ep-engine/src/executorthread.cc:31 (ep.so+0x0000001ea0d0)\n30:     #13 CouchbaseThread::run() /home/owend/master/platform/src/cb_pthreads.cc:58 (libplatform_so.so.0.1.0+0x00000000c9c7)\n30:     #14 platform_thread_wrap /home/owend/master/platform/src/cb_pthreads.cc:71 (libplatform_so.so.0.1.0+0x00000000affe)\n30:     #15 \u003cnull\u003e \u003cnull\u003e (libtsan.so.0+0x0000000230d9)\n30:\n30:   Previous write of size 8 at 0x7d1800060a38 by main thread (mutexes: write M1575):\n30:     #0 operator new(unsigned long) \u003cnull\u003e (libtsan.so.0+0x000000025a33)\n30:     #1 __gnu_cxx::new_allocator\u003cstd::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::allocate(unsigned long, void const*) \u003cnull\u003e (engine_testapp+0x0000004a6ca7)\n30:     #2 std::allocator_traits\u003cstd::allocator\u003cstd::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e \u003e::allocate(std::allocator\u003cstd::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e\u0026, unsigned long) \u003cnull\u003e (engine_testapp+0x0000004a5168)\n30:     #3 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_get_node() \u003cnull\u003e (engine_testapp+0x0000004a316f)\n30:     #4 std::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e* std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_create_node\u003cstd::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e, std::tuple\u003c\u003e \u003e(std::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e\u0026\u0026, std::tuple\u003c\u003e\u0026\u0026) \u003cnull\u003e (engine_testapp+0x00000049c6b4)\n30:     #5 std::_Rb_tree_iterator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_emplace_hint_unique\u003cstd::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e, std::tuple\u003c\u003e \u003e(std::_Rb_tree_const_iterator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e\u0026\u0026, std::tuple\u003c\u003e\u0026\u0026) \u003cnull\u003e (engine_testapp+0x00000049928e)\n30:     #6 std::map\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::operator[](std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x00000048e488)\n30:     #7 add_stats /home/owend/master/ep-engine/tests/ep_test_apis.cc:236 (ep_perfsuite.so+0x00000008f5b9)\n30:     #8 STATWRITER_NAMESPACE::add_casted_stat(char const*, char const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:39 (ep.so+0x0000000e5673)\n30:     #9 void STATWRITER_NAMESPACE::add_casted_stat\u003cunsigned long\u003e(char const*, unsigned long const\u0026, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:48 (ep.so+0x0000000e96ae)\n30:     #10 EventuallyPersistentEngine::addSeqnoVbStats(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), RCPtr\u003cVBucket\u003e const\u0026) /home/owend/master/ep-engine/src/ep_engine.cc:4445 (ep.so+0x0000001ad56d)\n30:     #11 EventuallyPersistentEngine::doSeqnoStats(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), char const*, int) /home/owend/master/ep-engine/src/ep_engine.cc:4490 (ep.so+0x0000001ad95f)\n30:     #12 EventuallyPersistentEngine::getStats(void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/owend/master/ep-engine/src/ep_engine.cc:4595 (ep.so+0x0000001ae4de)\n30:     #13 EvpGetStats /home/owend/master/ep-engine/src/ep_engine.cc:232 (ep.so+0x00000019851e)\n30:     #14 ENGINE_ERROR_CODE std::_Bind\u003cENGINE_ERROR_CODE (*(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)))(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*))\u003e::__call\u003cENGINE_ERROR_CODE, , 0ul, 1ul, 2ul, 3ul, 4ul\u003e(std::tuple\u003c\u003e\u0026\u0026, std::_Index_tuple\u003c0ul, 1ul, 2ul, 3ul, 4ul\u003e) \u003cnull\u003e (engine_testapp+0x00000049f211)\n30:     #15 ENGINE_ERROR_CODE std::_Bind\u003cENGINE_ERROR_CODE (*(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)))(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*))\u003e::operator()\u003c, ENGINE_ERROR_CODE\u003e() \u003cnull\u003e (engine_testapp+0x00000049aa02)\n30:     #16 std::_Function_handler\u003cENGINE_ERROR_CODE (), std::_Bind\u003cENGINE_ERROR_CODE (*(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)))(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*))\u003e \u003e::_M_invoke(std::_Any_data const\u0026) \u003cnull\u003e (engine_testapp+0x00000049145b)\n30:     #17 std::function\u003cENGINE_ERROR_CODE ()\u003e::operator()() const \u003cnull\u003e (engine_testapp+0x000000484e28)\n30:     #18 call_engine_and_handle_EWOULDBLOCK /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:127 (engine_testapp+0x00000047cf00)\n30:     #19 mock_get_stats /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:220 (engine_testapp+0x00000047d896)\n30:     #20 perf_stat_latency_core /home/owend/master/ep-engine/tests/ep_perfsuite.cc:1238 (ep_perfsuite.so+0x000000063d3d)\n30:     #21 perf_stat_latency /home/owend/master/ep-engine/tests/ep_perfsuite.cc:1306 (ep_perfsuite.so+0x00000006427a)\n30:     #22 perf_slow_stat_latency_100vb /home/owend/master/ep-engine/tests/ep_perfsuite.cc:1365 (ep_perfsuite.so+0x00000006498c)\n30:     #23 execute_test /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:962 (engine_testapp+0x000000481776)\n30:     #24 main /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:1359 (engine_testapp+0x000000482ab1)\n\nChange-Id: I7bdc847c0913244409fa044e312d53b484dc2dab\n"},"parents_data":[{"branch_name":"refs/heads/master","commit_id":"29bb51e4a6961e89b215aa8a6e7d2a9d3747b7ed","is_merged_in_target_branch":true,"change_id":"I0b8fb8169d84698e293779c8e7d2bb6e75dc9686","change_number":68473,"patch_set_number":27,"change_status":"MERGED"}],"branch":"refs/heads/master"},"37ba675f13dc301861ff7a7f632933dbd640830b":{"kind":"REWORK","_number":15,"created":"2016-10-20 09:33:18.000000000","uploader":{"_account_id":1001547,"name":"Dan Owen","email":"owend@couchbase.com","username":"owend","avatars":[{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d32","height":32},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d56","height":56},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d100","height":100},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d120","height":120}]},"ref":"refs/changes/13/68813/15","fetch":{"anonymous http":{"url":"https://review.couchbase.org/ep-engine","ref":"refs/changes/13/68813/15","commands":{"Branch":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/15 \u0026\u0026 git checkout -b change-68813 FETCH_HEAD","Checkout":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/15 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/15 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/15 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.couchbase.org/ep-engine refs/changes/13/68813/15","Reset To":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/15 \u0026\u0026 git reset --hard FETCH_HEAD"}}},"commit":{"parents":[{"commit":"29bb51e4a6961e89b215aa8a6e7d2a9d3747b7ed","subject":"Use \u003d\u003d and compare instead of strncmp in getStats"}],"author":{"name":"Daniel Owen","email":"owend@couchbase.com","date":"2016-10-17 16:34:08.000000000","tz":60},"committer":{"name":"Daniel Owen","email":"owend@couchbase.com","date":"2016-10-20 09:31:14.000000000","tz":60},"subject":"MB-21379: Ensure vals data structure is thread safe in ep_testsuite","message":"MB-21379: Ensure vals data structure is thread safe in ep_testsuite\n\nWhen developing additional stats test for ep-engine_perfsuite, the\nfollowing data race was uncovered.\n\nThe patch ensures that accesses to vals are protected with a mutex.\nAlso get_stat and get_histo_stat can only be called one at a time as\nthey use the three global variables (requested_stat_name,\nactual_stat_value and histogram_stat_int_value).  Therefore a secondary\nmutex is required to enforce this.\n\nIt has been confirmed that with this patch the ThreadSanitizer issue\nno longer occurs.\n\n30: WARNING: ThreadSanitizer: data race (pid\u003d42065)\n30:   Read of size 8 at 0x7d1800060a38 by thread T18 (mutexes: write M1704):\n30:     #0 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_S_right(std::_Rb_tree_node_base*) \u003cnull\u003e (engine_testapp+0x00000049c503)\n30:     #1 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_lower_bound(std::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e*, std::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e*, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x0000004a30db)\n30:     #2 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::lower_bound(std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x00000049c5f6)\n30:     #3 std::map\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::lower_bound(std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x000000499047)\n30:     #4 std::map\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::operator[](std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x00000048e3ba)\n30:     #5 add_stats /home/owend/master/ep-engine/tests/ep_test_apis.cc:236 (ep_perfsuite.so+0x00000008f5b9)\n30:     #6 STATWRITER_NAMESPACE::add_casted_stat(char const*, char const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:39 (ep.so+0x0000000e5673)\n30:     #7 StatCheckpointVisitor::addCheckpointStat(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), EventuallyPersistentStore*, RCPtr\u003cVBucket\u003e\u0026) \u003cnull\u003e (ep.so+0x0000001c120c)\n30:     #8 StatCheckpointVisitor::visitBucket(RCPtr\u003cVBucket\u003e\u0026) \u003cnull\u003e (ep.so+0x0000001c10e5)\n30:     #9 EventuallyPersistentStore::visit(VBucketVisitor\u0026) /home/owend/master/ep-engine/src/ep.cc:3796 (ep.so+0x000000174559)\n30:     #10 StatCheckpointTask::run() \u003cnull\u003e (ep.so+0x0000001c155b)\n30:     #11 ExecutorThread::run() /home/owend/master/ep-engine/src/executorthread.cc:113 (ep.so+0x0000001ea96d)\n30:     #12 launch_executor_thread /home/owend/master/ep-engine/src/executorthread.cc:31 (ep.so+0x0000001ea0d0)\n30:     #13 CouchbaseThread::run() /home/owend/master/platform/src/cb_pthreads.cc:58 (libplatform_so.so.0.1.0+0x00000000c9c7)\n30:     #14 platform_thread_wrap /home/owend/master/platform/src/cb_pthreads.cc:71 (libplatform_so.so.0.1.0+0x00000000affe)\n30:     #15 \u003cnull\u003e \u003cnull\u003e (libtsan.so.0+0x0000000230d9)\n30:\n30:   Previous write of size 8 at 0x7d1800060a38 by main thread (mutexes: write M1575):\n30:     #0 operator new(unsigned long) \u003cnull\u003e (libtsan.so.0+0x000000025a33)\n30:     #1 __gnu_cxx::new_allocator\u003cstd::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::allocate(unsigned long, void const*) \u003cnull\u003e (engine_testapp+0x0000004a6ca7)\n30:     #2 std::allocator_traits\u003cstd::allocator\u003cstd::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e \u003e::allocate(std::allocator\u003cstd::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e\u0026, unsigned long) \u003cnull\u003e (engine_testapp+0x0000004a5168)\n30:     #3 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_get_node() \u003cnull\u003e (engine_testapp+0x0000004a316f)\n30:     #4 std::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e* std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_create_node\u003cstd::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e, std::tuple\u003c\u003e \u003e(std::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e\u0026\u0026, std::tuple\u003c\u003e\u0026\u0026) \u003cnull\u003e (engine_testapp+0x00000049c6b4)\n30:     #5 std::_Rb_tree_iterator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_emplace_hint_unique\u003cstd::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e, std::tuple\u003c\u003e \u003e(std::_Rb_tree_const_iterator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e\u0026\u0026, std::tuple\u003c\u003e\u0026\u0026) \u003cnull\u003e (engine_testapp+0x00000049928e)\n30:     #6 std::map\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::operator[](std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x00000048e488)\n30:     #7 add_stats /home/owend/master/ep-engine/tests/ep_test_apis.cc:236 (ep_perfsuite.so+0x00000008f5b9)\n30:     #8 STATWRITER_NAMESPACE::add_casted_stat(char const*, char const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:39 (ep.so+0x0000000e5673)\n30:     #9 void STATWRITER_NAMESPACE::add_casted_stat\u003cunsigned long\u003e(char const*, unsigned long const\u0026, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:48 (ep.so+0x0000000e96ae)\n30:     #10 EventuallyPersistentEngine::addSeqnoVbStats(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), RCPtr\u003cVBucket\u003e const\u0026) /home/owend/master/ep-engine/src/ep_engine.cc:4445 (ep.so+0x0000001ad56d)\n30:     #11 EventuallyPersistentEngine::doSeqnoStats(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), char const*, int) /home/owend/master/ep-engine/src/ep_engine.cc:4490 (ep.so+0x0000001ad95f)\n30:     #12 EventuallyPersistentEngine::getStats(void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/owend/master/ep-engine/src/ep_engine.cc:4595 (ep.so+0x0000001ae4de)\n30:     #13 EvpGetStats /home/owend/master/ep-engine/src/ep_engine.cc:232 (ep.so+0x00000019851e)\n30:     #14 ENGINE_ERROR_CODE std::_Bind\u003cENGINE_ERROR_CODE (*(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)))(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*))\u003e::__call\u003cENGINE_ERROR_CODE, , 0ul, 1ul, 2ul, 3ul, 4ul\u003e(std::tuple\u003c\u003e\u0026\u0026, std::_Index_tuple\u003c0ul, 1ul, 2ul, 3ul, 4ul\u003e) \u003cnull\u003e (engine_testapp+0x00000049f211)\n30:     #15 ENGINE_ERROR_CODE std::_Bind\u003cENGINE_ERROR_CODE (*(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)))(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*))\u003e::operator()\u003c, ENGINE_ERROR_CODE\u003e() \u003cnull\u003e (engine_testapp+0x00000049aa02)\n30:     #16 std::_Function_handler\u003cENGINE_ERROR_CODE (), std::_Bind\u003cENGINE_ERROR_CODE (*(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)))(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*))\u003e \u003e::_M_invoke(std::_Any_data const\u0026) \u003cnull\u003e (engine_testapp+0x00000049145b)\n30:     #17 std::function\u003cENGINE_ERROR_CODE ()\u003e::operator()() const \u003cnull\u003e (engine_testapp+0x000000484e28)\n30:     #18 call_engine_and_handle_EWOULDBLOCK /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:127 (engine_testapp+0x00000047cf00)\n30:     #19 mock_get_stats /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:220 (engine_testapp+0x00000047d896)\n30:     #20 perf_stat_latency_core /home/owend/master/ep-engine/tests/ep_perfsuite.cc:1238 (ep_perfsuite.so+0x000000063d3d)\n30:     #21 perf_stat_latency /home/owend/master/ep-engine/tests/ep_perfsuite.cc:1306 (ep_perfsuite.so+0x00000006427a)\n30:     #22 perf_slow_stat_latency_100vb /home/owend/master/ep-engine/tests/ep_perfsuite.cc:1365 (ep_perfsuite.so+0x00000006498c)\n30:     #23 execute_test /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:962 (engine_testapp+0x000000481776)\n30:     #24 main /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:1359 (engine_testapp+0x000000482ab1)\n\nChange-Id: I7bdc847c0913244409fa044e312d53b484dc2dab\n"},"parents_data":[{"branch_name":"refs/heads/master","commit_id":"29bb51e4a6961e89b215aa8a6e7d2a9d3747b7ed","is_merged_in_target_branch":true,"change_id":"I0b8fb8169d84698e293779c8e7d2bb6e75dc9686","change_number":68473,"patch_set_number":27,"change_status":"MERGED"}],"branch":"refs/heads/master"},"f4ede518baeb338fdc6ffd690d83ff7a8e0657d3":{"kind":"REWORK","_number":16,"created":"2016-10-20 09:37:07.000000000","uploader":{"_account_id":1001547,"name":"Dan Owen","email":"owend@couchbase.com","username":"owend","avatars":[{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d32","height":32},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d56","height":56},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d100","height":100},{"url":"https://www.gravatar.com/avatar/0761a726bc37606caee7ec6bf566deca.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d120","height":120}]},"ref":"refs/changes/13/68813/16","fetch":{"anonymous http":{"url":"https://review.couchbase.org/ep-engine","ref":"refs/changes/13/68813/16","commands":{"Branch":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/16 \u0026\u0026 git checkout -b change-68813 FETCH_HEAD","Checkout":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/16 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/16 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/16 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.couchbase.org/ep-engine refs/changes/13/68813/16","Reset To":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/16 \u0026\u0026 git reset --hard FETCH_HEAD"}}},"commit":{"parents":[{"commit":"29bb51e4a6961e89b215aa8a6e7d2a9d3747b7ed","subject":"Use \u003d\u003d and compare instead of strncmp in getStats"}],"author":{"name":"Daniel Owen","email":"owend@couchbase.com","date":"2016-10-17 16:34:08.000000000","tz":60},"committer":{"name":"Daniel Owen","email":"owend@couchbase.com","date":"2016-10-20 09:36:51.000000000","tz":60},"subject":"MB-21379: Ensure vals data structure is thread safe in ep_testsuite","message":"MB-21379: Ensure vals data structure is thread safe in ep_testsuite\n\nWhen developing additional stats test for ep-engine_perfsuite, the\nfollowing data race was uncovered.\n\nThe patch ensures that accesses to vals are protected with a mutex.\nAlso get_stat and get_histo_stat can only be called one at a time as\nthey use the three global variables (requested_stat_name,\nactual_stat_value and histogram_stat_int_value).  Therefore a secondary\nmutex is required to enforce this.\n\nIt has been confirmed that with this patch the ThreadSanitizer issue\nno longer occurs.\n\n30: WARNING: ThreadSanitizer: data race (pid\u003d42065)\n30:   Read of size 8 at 0x7d1800060a38 by thread T18 (mutexes: write M1704):\n30:     #0 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_S_right(std::_Rb_tree_node_base*) \u003cnull\u003e (engine_testapp+0x00000049c503)\n30:     #1 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_lower_bound(std::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e*, std::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e*, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x0000004a30db)\n30:     #2 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::lower_bound(std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x00000049c5f6)\n30:     #3 std::map\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::lower_bound(std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x000000499047)\n30:     #4 std::map\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::operator[](std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x00000048e3ba)\n30:     #5 add_stats /home/owend/master/ep-engine/tests/ep_test_apis.cc:236 (ep_perfsuite.so+0x00000008f5b9)\n30:     #6 STATWRITER_NAMESPACE::add_casted_stat(char const*, char const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:39 (ep.so+0x0000000e5673)\n30:     #7 StatCheckpointVisitor::addCheckpointStat(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), EventuallyPersistentStore*, RCPtr\u003cVBucket\u003e\u0026) \u003cnull\u003e (ep.so+0x0000001c120c)\n30:     #8 StatCheckpointVisitor::visitBucket(RCPtr\u003cVBucket\u003e\u0026) \u003cnull\u003e (ep.so+0x0000001c10e5)\n30:     #9 EventuallyPersistentStore::visit(VBucketVisitor\u0026) /home/owend/master/ep-engine/src/ep.cc:3796 (ep.so+0x000000174559)\n30:     #10 StatCheckpointTask::run() \u003cnull\u003e (ep.so+0x0000001c155b)\n30:     #11 ExecutorThread::run() /home/owend/master/ep-engine/src/executorthread.cc:113 (ep.so+0x0000001ea96d)\n30:     #12 launch_executor_thread /home/owend/master/ep-engine/src/executorthread.cc:31 (ep.so+0x0000001ea0d0)\n30:     #13 CouchbaseThread::run() /home/owend/master/platform/src/cb_pthreads.cc:58 (libplatform_so.so.0.1.0+0x00000000c9c7)\n30:     #14 platform_thread_wrap /home/owend/master/platform/src/cb_pthreads.cc:71 (libplatform_so.so.0.1.0+0x00000000affe)\n30:     #15 \u003cnull\u003e \u003cnull\u003e (libtsan.so.0+0x0000000230d9)\n30:\n30:   Previous write of size 8 at 0x7d1800060a38 by main thread (mutexes: write M1575):\n30:     #0 operator new(unsigned long) \u003cnull\u003e (libtsan.so.0+0x000000025a33)\n30:     #1 __gnu_cxx::new_allocator\u003cstd::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::allocate(unsigned long, void const*) \u003cnull\u003e (engine_testapp+0x0000004a6ca7)\n30:     #2 std::allocator_traits\u003cstd::allocator\u003cstd::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e \u003e::allocate(std::allocator\u003cstd::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e\u0026, unsigned long) \u003cnull\u003e (engine_testapp+0x0000004a5168)\n30:     #3 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_get_node() \u003cnull\u003e (engine_testapp+0x0000004a316f)\n30:     #4 std::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e* std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_create_node\u003cstd::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e, std::tuple\u003c\u003e \u003e(std::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e\u0026\u0026, std::tuple\u003c\u003e\u0026\u0026) \u003cnull\u003e (engine_testapp+0x00000049c6b4)\n30:     #5 std::_Rb_tree_iterator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_emplace_hint_unique\u003cstd::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e, std::tuple\u003c\u003e \u003e(std::_Rb_tree_const_iterator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e\u0026\u0026, std::tuple\u003c\u003e\u0026\u0026) \u003cnull\u003e (engine_testapp+0x00000049928e)\n30:     #6 std::map\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::operator[](std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x00000048e488)\n30:     #7 add_stats /home/owend/master/ep-engine/tests/ep_test_apis.cc:236 (ep_perfsuite.so+0x00000008f5b9)\n30:     #8 STATWRITER_NAMESPACE::add_casted_stat(char const*, char const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:39 (ep.so+0x0000000e5673)\n30:     #9 void STATWRITER_NAMESPACE::add_casted_stat\u003cunsigned long\u003e(char const*, unsigned long const\u0026, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:48 (ep.so+0x0000000e96ae)\n30:     #10 EventuallyPersistentEngine::addSeqnoVbStats(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), RCPtr\u003cVBucket\u003e const\u0026) /home/owend/master/ep-engine/src/ep_engine.cc:4445 (ep.so+0x0000001ad56d)\n30:     #11 EventuallyPersistentEngine::doSeqnoStats(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), char const*, int) /home/owend/master/ep-engine/src/ep_engine.cc:4490 (ep.so+0x0000001ad95f)\n30:     #12 EventuallyPersistentEngine::getStats(void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/owend/master/ep-engine/src/ep_engine.cc:4595 (ep.so+0x0000001ae4de)\n30:     #13 EvpGetStats /home/owend/master/ep-engine/src/ep_engine.cc:232 (ep.so+0x00000019851e)\n30:     #14 ENGINE_ERROR_CODE std::_Bind\u003cENGINE_ERROR_CODE (*(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)))(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*))\u003e::__call\u003cENGINE_ERROR_CODE, , 0ul, 1ul, 2ul, 3ul, 4ul\u003e(std::tuple\u003c\u003e\u0026\u0026, std::_Index_tuple\u003c0ul, 1ul, 2ul, 3ul, 4ul\u003e) \u003cnull\u003e (engine_testapp+0x00000049f211)\n30:     #15 ENGINE_ERROR_CODE std::_Bind\u003cENGINE_ERROR_CODE (*(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)))(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*))\u003e::operator()\u003c, ENGINE_ERROR_CODE\u003e() \u003cnull\u003e (engine_testapp+0x00000049aa02)\n30:     #16 std::_Function_handler\u003cENGINE_ERROR_CODE (), std::_Bind\u003cENGINE_ERROR_CODE (*(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)))(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*))\u003e \u003e::_M_invoke(std::_Any_data const\u0026) \u003cnull\u003e (engine_testapp+0x00000049145b)\n30:     #17 std::function\u003cENGINE_ERROR_CODE ()\u003e::operator()() const \u003cnull\u003e (engine_testapp+0x000000484e28)\n30:     #18 call_engine_and_handle_EWOULDBLOCK /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:127 (engine_testapp+0x00000047cf00)\n30:     #19 mock_get_stats /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:220 (engine_testapp+0x00000047d896)\n30:     #20 perf_stat_latency_core /home/owend/master/ep-engine/tests/ep_perfsuite.cc:1238 (ep_perfsuite.so+0x000000063d3d)\n30:     #21 perf_stat_latency /home/owend/master/ep-engine/tests/ep_perfsuite.cc:1306 (ep_perfsuite.so+0x00000006427a)\n30:     #22 perf_slow_stat_latency_100vb /home/owend/master/ep-engine/tests/ep_perfsuite.cc:1365 (ep_perfsuite.so+0x00000006498c)\n30:     #23 execute_test /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:962 (engine_testapp+0x000000481776)\n30:     #24 main /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:1359 (engine_testapp+0x000000482ab1)\n\nChange-Id: I7bdc847c0913244409fa044e312d53b484dc2dab\n"},"parents_data":[{"branch_name":"refs/heads/master","commit_id":"29bb51e4a6961e89b215aa8a6e7d2a9d3747b7ed","is_merged_in_target_branch":true,"change_id":"I0b8fb8169d84698e293779c8e7d2bb6e75dc9686","change_number":68473,"patch_set_number":27,"change_status":"MERGED"}],"branch":"refs/heads/master"},"d775e169d9eec9807ba3ed2afd8e2b4a51c5f122":{"kind":"REWORK","_number":17,"created":"2016-10-20 15:19:18.000000000","uploader":{"_account_id":1000966,"name":"Dave Rigby","email":"daver@couchbase.com","username":"drigby","avatars":[{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d32","height":32},{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d56","height":56},{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d100","height":100},{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d120","height":120}]},"ref":"refs/changes/13/68813/17","fetch":{"anonymous http":{"url":"https://review.couchbase.org/ep-engine","ref":"refs/changes/13/68813/17","commands":{"Branch":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/17 \u0026\u0026 git checkout -b change-68813 FETCH_HEAD","Checkout":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/17 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/17 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/17 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.couchbase.org/ep-engine refs/changes/13/68813/17","Reset To":"git fetch https://review.couchbase.org/ep-engine refs/changes/13/68813/17 \u0026\u0026 git reset --hard FETCH_HEAD"}}},"commit":{"parents":[{"commit":"f4e92d826187cc96d6942b60f5bbb1ddeaf97e76","subject":"In EventuallyPersistentStore, move stop task funcs to deinitialize() from dtor"}],"author":{"name":"Daniel Owen","email":"owend@couchbase.com","date":"2016-10-17 16:34:08.000000000","tz":60},"committer":{"name":"Dave Rigby","email":"daver@couchbase.com","date":"2016-10-20 15:19:18.000000000","tz":0},"subject":"MB-21379: Ensure vals data structure is thread safe in ep_testsuite","message":"MB-21379: Ensure vals data structure is thread safe in ep_testsuite\n\nWhen developing additional stats test for ep-engine_perfsuite, the\nfollowing data race was uncovered.\n\nThe patch ensures that accesses to vals are protected with a mutex.\nAlso get_stat and get_histo_stat can only be called one at a time as\nthey use the three global variables (requested_stat_name,\nactual_stat_value and histogram_stat_int_value).  Therefore a secondary\nmutex is required to enforce this.\n\nIt has been confirmed that with this patch the ThreadSanitizer issue\nno longer occurs.\n\n30: WARNING: ThreadSanitizer: data race (pid\u003d42065)\n30:   Read of size 8 at 0x7d1800060a38 by thread T18 (mutexes: write M1704):\n30:     #0 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_S_right(std::_Rb_tree_node_base*) \u003cnull\u003e (engine_testapp+0x00000049c503)\n30:     #1 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_lower_bound(std::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e*, std::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e*, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x0000004a30db)\n30:     #2 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::lower_bound(std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x00000049c5f6)\n30:     #3 std::map\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::lower_bound(std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x000000499047)\n30:     #4 std::map\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::operator[](std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x00000048e3ba)\n30:     #5 add_stats /home/owend/master/ep-engine/tests/ep_test_apis.cc:236 (ep_perfsuite.so+0x00000008f5b9)\n30:     #6 STATWRITER_NAMESPACE::add_casted_stat(char const*, char const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:39 (ep.so+0x0000000e5673)\n30:     #7 StatCheckpointVisitor::addCheckpointStat(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), EventuallyPersistentStore*, RCPtr\u003cVBucket\u003e\u0026) \u003cnull\u003e (ep.so+0x0000001c120c)\n30:     #8 StatCheckpointVisitor::visitBucket(RCPtr\u003cVBucket\u003e\u0026) \u003cnull\u003e (ep.so+0x0000001c10e5)\n30:     #9 EventuallyPersistentStore::visit(VBucketVisitor\u0026) /home/owend/master/ep-engine/src/ep.cc:3796 (ep.so+0x000000174559)\n30:     #10 StatCheckpointTask::run() \u003cnull\u003e (ep.so+0x0000001c155b)\n30:     #11 ExecutorThread::run() /home/owend/master/ep-engine/src/executorthread.cc:113 (ep.so+0x0000001ea96d)\n30:     #12 launch_executor_thread /home/owend/master/ep-engine/src/executorthread.cc:31 (ep.so+0x0000001ea0d0)\n30:     #13 CouchbaseThread::run() /home/owend/master/platform/src/cb_pthreads.cc:58 (libplatform_so.so.0.1.0+0x00000000c9c7)\n30:     #14 platform_thread_wrap /home/owend/master/platform/src/cb_pthreads.cc:71 (libplatform_so.so.0.1.0+0x00000000affe)\n30:     #15 \u003cnull\u003e \u003cnull\u003e (libtsan.so.0+0x0000000230d9)\n30:\n30:   Previous write of size 8 at 0x7d1800060a38 by main thread (mutexes: write M1575):\n30:     #0 operator new(unsigned long) \u003cnull\u003e (libtsan.so.0+0x000000025a33)\n30:     #1 __gnu_cxx::new_allocator\u003cstd::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::allocate(unsigned long, void const*) \u003cnull\u003e (engine_testapp+0x0000004a6ca7)\n30:     #2 std::allocator_traits\u003cstd::allocator\u003cstd::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e \u003e::allocate(std::allocator\u003cstd::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e\u0026, unsigned long) \u003cnull\u003e (engine_testapp+0x0000004a5168)\n30:     #3 std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_get_node() \u003cnull\u003e (engine_testapp+0x0000004a316f)\n30:     #4 std::_Rb_tree_node\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e* std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_create_node\u003cstd::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e, std::tuple\u003c\u003e \u003e(std::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e\u0026\u0026, std::tuple\u003c\u003e\u0026\u0026) \u003cnull\u003e (engine_testapp+0x00000049c6b4)\n30:     #5 std::_Rb_tree_iterator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e std::_Rb_tree\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::_Select1st\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::_M_emplace_hint_unique\u003cstd::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e, std::tuple\u003c\u003e \u003e(std::_Rb_tree_const_iterator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e, std::piecewise_construct_t const\u0026, std::tuple\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026\u003e\u0026\u0026, std::tuple\u003c\u003e\u0026\u0026) \u003cnull\u003e (engine_testapp+0x00000049928e)\n30:     #6 std::map\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e, std::less\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e, std::allocator\u003cstd::pair\u003cstd::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const, std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e \u003e \u003e \u003e::operator[](std::__cxx11::basic_string\u003cchar, std::char_traits\u003cchar\u003e, std::allocator\u003cchar\u003e \u003e const\u0026) \u003cnull\u003e (engine_testapp+0x00000048e488)\n30:     #7 add_stats /home/owend/master/ep-engine/tests/ep_test_apis.cc:236 (ep_perfsuite.so+0x00000008f5b9)\n30:     #8 STATWRITER_NAMESPACE::add_casted_stat(char const*, char const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:39 (ep.so+0x0000000e5673)\n30:     #9 void STATWRITER_NAMESPACE::add_casted_stat\u003cunsigned long\u003e(char const*, unsigned long const\u0026, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/owend/master/ep-engine/src/statwriter.h:48 (ep.so+0x0000000e96ae)\n30:     #10 EventuallyPersistentEngine::addSeqnoVbStats(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), RCPtr\u003cVBucket\u003e const\u0026) /home/owend/master/ep-engine/src/ep_engine.cc:4445 (ep.so+0x0000001ad56d)\n30:     #11 EventuallyPersistentEngine::doSeqnoStats(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), char const*, int) /home/owend/master/ep-engine/src/ep_engine.cc:4490 (ep.so+0x0000001ad95f)\n30:     #12 EventuallyPersistentEngine::getStats(void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/owend/master/ep-engine/src/ep_engine.cc:4595 (ep.so+0x0000001ae4de)\n30:     #13 EvpGetStats /home/owend/master/ep-engine/src/ep_engine.cc:232 (ep.so+0x00000019851e)\n30:     #14 ENGINE_ERROR_CODE std::_Bind\u003cENGINE_ERROR_CODE (*(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)))(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*))\u003e::__call\u003cENGINE_ERROR_CODE, , 0ul, 1ul, 2ul, 3ul, 4ul\u003e(std::tuple\u003c\u003e\u0026\u0026, std::_Index_tuple\u003c0ul, 1ul, 2ul, 3ul, 4ul\u003e) \u003cnull\u003e (engine_testapp+0x00000049f211)\n30:     #15 ENGINE_ERROR_CODE std::_Bind\u003cENGINE_ERROR_CODE (*(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)))(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*))\u003e::operator()\u003c, ENGINE_ERROR_CODE\u003e() \u003cnull\u003e (engine_testapp+0x00000049aa02)\n30:     #16 std::_Function_handler\u003cENGINE_ERROR_CODE (), std::_Bind\u003cENGINE_ERROR_CODE (*(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)))(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*))\u003e \u003e::_M_invoke(std::_Any_data const\u0026) \u003cnull\u003e (engine_testapp+0x00000049145b)\n30:     #17 std::function\u003cENGINE_ERROR_CODE ()\u003e::operator()() const \u003cnull\u003e (engine_testapp+0x000000484e28)\n30:     #18 call_engine_and_handle_EWOULDBLOCK /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:127 (engine_testapp+0x00000047cf00)\n30:     #19 mock_get_stats /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:220 (engine_testapp+0x00000047d896)\n30:     #20 perf_stat_latency_core /home/owend/master/ep-engine/tests/ep_perfsuite.cc:1238 (ep_perfsuite.so+0x000000063d3d)\n30:     #21 perf_stat_latency /home/owend/master/ep-engine/tests/ep_perfsuite.cc:1306 (ep_perfsuite.so+0x00000006427a)\n30:     #22 perf_slow_stat_latency_100vb /home/owend/master/ep-engine/tests/ep_perfsuite.cc:1365 (ep_perfsuite.so+0x00000006498c)\n30:     #23 execute_test /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:962 (engine_testapp+0x000000481776)\n30:     #24 main /home/owend/master/memcached/programs/engine_testapp/engine_testapp.cc:1359 (engine_testapp+0x000000482ab1)\n\nChange-Id: I7bdc847c0913244409fa044e312d53b484dc2dab\nReviewed-on: http://review.couchbase.org/68813\nReviewed-by: Dave Rigby \u003cdaver@couchbase.com\u003e\nTested-by: buildbot \u003cbuild@couchbase.com\u003e\n"},"parents_data":[{"branch_name":"refs/heads/master","commit_id":"f4e92d826187cc96d6942b60f5bbb1ddeaf97e76","is_merged_in_target_branch":true,"change_id":"Ie090fd74b7bad77642666d85969c97ae5001a027","change_number":68974,"patch_set_number":3,"change_status":"MERGED"}],"branch":"refs/heads/master"}},"requirements":[],"submit_records":[],"submit_requirements":[]}