diff options
author | Kuba Mracek <mracek@apple.com> | 2018-04-13 01:05:29 +0000 |
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committer | Kuba Mracek <mracek@apple.com> | 2018-04-13 01:05:29 +0000 |
commit | b023e2532da504f9971764076becdd447d668ed0 (patch) | |
tree | dd8bc2e587cb37fd5c863be968be892284f5556f /lib/tsan/rtl/tsan_interceptors_mac.cc | |
parent | a33ed44a99ba5d2bbb24ae494b044921bb31303b (diff) |
[tsan] Add interceptors for objc_sync_enter and objc_sync_exit
Objective-C's @synchronize synchronization primitive uses calls to objc_sync_enter and objc_sync_exit runtime functions. In most cases, they end up just calling pthread_mutex_lock/pthread_mutex_unlock, but there are some cases where the synchronization from pthread_mutex_lock/pthread_mutex_unlock interceptors isn't enough. Let's add explicit interceptors for objc_sync_enter and objc_sync_exit to handle all cases.
Differential Revision: https://reviews.llvm.org/D45487
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@329982 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/tsan/rtl/tsan_interceptors_mac.cc')
-rw-r--r-- | lib/tsan/rtl/tsan_interceptors_mac.cc | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/tsan/rtl/tsan_interceptors_mac.cc b/lib/tsan/rtl/tsan_interceptors_mac.cc index 3b3a4a281..1c4aa02a0 100644 --- a/lib/tsan/rtl/tsan_interceptors_mac.cc +++ b/lib/tsan/rtl/tsan_interceptors_mac.cc @@ -294,6 +294,19 @@ TSAN_INTERCEPTOR(void, xpc_connection_cancel, xpc_connection_t connection) { #endif // #if defined(__has_include) && __has_include(<xpc/xpc.h>) +TSAN_INTERCEPTOR(int, objc_sync_enter, void *obj) { + SCOPED_TSAN_INTERCEPTOR(objc_sync_enter, obj); + int result = REAL(objc_sync_enter)(obj); + if (obj) Acquire(thr, pc, (uptr)obj); + return result; +} + +TSAN_INTERCEPTOR(int, objc_sync_exit, void *obj) { + SCOPED_TSAN_INTERCEPTOR(objc_sync_enter, obj); + if (obj) Release(thr, pc, (uptr)obj); + return REAL(objc_sync_exit)(obj); +} + // On macOS, libc++ is always linked dynamically, so intercepting works the // usual way. #define STDCXX_INTERCEPTOR TSAN_INTERCEPTOR |