| commit | dbc40b34617b5ee5d2f82272c8863c602265063c | [log] [tgz] |
|---|---|---|
| author | Jason Molenda <jmolenda@apple.com> | Wed Feb 14 10:05:22 2024 -0800 |
| committer | GitHub <noreply@github.com> | Wed Feb 14 10:05:22 2024 -0800 |
| tree | 0d3dae6a6abcef6355533ec55ffca4418fd893fe | |
| parent | 630f82ec0c61b772711355fad08ed0d0adce922d [diff] |
[lldb] Fix the flakey Concurrent tests on macOS (#81710) The concurrent tests all do a pthread_join at the end, and concurrent_base.py stops after that pthread_join and sanity checks that only 1 thread is running. On macOS, after pthread_join() has completed, there can be an extra thread still running which is completing the details of that task asynchronously; this causes testsuite failures. When this happens, we see the second thread is in ``` frame #0: 0x0000000180ce7700 libsystem_kernel.dylib`__ulock_wake + 8 frame #1: 0x0000000180d25ad4 libsystem_pthread.dylib`_pthread_joiner_wake + 52 frame #2: 0x0000000180d23c18 libsystem_pthread.dylib`_pthread_terminate + 384 frame #3: 0x0000000180d23a98 libsystem_pthread.dylib`_pthread_terminate_invoke + 92 frame #4: 0x0000000180d26740 libsystem_pthread.dylib`_pthread_exit + 112 frame #5: 0x0000000180d26040 libsystem_pthread.dylib`_pthread_start + 148 ``` there are none of the functions from the test file present on this thread. In this patch, instead of counting the number of threads, I iterate over the threads looking for functions from our test file (by name) and only count threads that have at least one of them. It's a lower frequency failure than the darwin kernel bug causing an extra step instruction mach exception when hardware breakpoint/watchpoints are used, but once I fixed that, this came up as the next most common failure for these tests. rdar://110555062
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