This is preparation for performance optimization.
We need to highlight that this is very specific lock, and should not be
used for other purposes.
Add `fork_child` parameter to distinguish processes after fork.
Future patch will set the current context as well.
Existing callsite requires additional lock to find context.
Differential Revision: https://reviews.llvm.org/D148390
This is a re-land of https://reviews.llvm.org/D86171 with fix.
Fuchsia's system libraries are instrumented and use the lsan
allocator for internal purposes. So leak checking needs to run
after all atexit hooks and after the system libraries' internal
exit-time hooks. The <zircon/sanitizer.h> hook API calls the
__sanitizer_process_exit_hook function at exactly the right time.
Reviewed By: vitalybuka
Differential Revision: https://reviews.llvm.org/D88248
They don't seem to do anything useful in lsan.
They are needed only if a tools needs to execute
some custom logic during detach/join, or if it uses
thread registry quarantine. Lsan does none of this.
And if a tool cares then it would also need to intercept
pthread_tryjoin_np and pthread_timedjoin_np, otherwise
it will mess thread states.
Fwiw, asan does not intercept these functions either.
Reviewed By: vitalybuka
Differential Revision: https://reviews.llvm.org/D113920
Currently we have a bit of a mess related to tids:
- sanitizers re-declare kInvalidTid multiple times
- some call it kUnknownTid
- implicit assumptions that main tid is 0
- asan/memprof claim their tids need to fit into 24 bits,
but this does not seem to be true anymore
- inconsistent use of u32/int to store tids
Introduce kInvalidTid/kMainTid in sanitizer_common
and use them consistently.
Reviewed By: vitalybuka
Differential Revision: https://reviews.llvm.org/D101428
This reverts commit 0caad9fe441d5ee562e96d8b30b5574b492a933a.
This reverts commit c96d0cceb684fa176b51d7df5f4f8370e2c983f4.
Causes linker errors which were not fixed by the subsequent commit
either:
/home/nikic/llvm-project/compiler-rt/lib/asan/asan_rtl.cpp:503: error: undefined reference to '__asan::InstallAtExitCheckLeaks()'
Fuchsia's system libraries are instrumented and use the lsan
allocator for internal purposes. So leak checking needs to run
after all atexit hooks and after the system libraries' internal
exit-time hooks. The <zircon/sanitizer.h> hook API calls the
__sanitizer_process_exit_hook function at exactly the right time.
Reviewed By: vitalybuka, phosek
Differential Revision: https://reviews.llvm.org/D86171
This is a small refactoring to prepare for porting LSan to Fuchsia.
Factor out parts of lsan_thread.{cpp,h} that don't apply to Fuchsia.
Since existing supported systems are POSIX-based, the affected code
is moved to lsan_posix.{cpp.h}.
Patch By: mcgrathr
Differential Revision: https://reviews.llvm.org/D73309
