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Diffstat (limited to 'runtime/base/mutex.cc')
| -rw-r--r-- | runtime/base/mutex.cc | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/runtime/base/mutex.cc b/runtime/base/mutex.cc index 0abe9667f8..26a665bd41 100644 --- a/runtime/base/mutex.cc +++ b/runtime/base/mutex.cc @@ -463,6 +463,7 @@ void Mutex::ExclusiveLock(Thread* self) { done = state_and_contenders_.CompareAndSetWeakAcquire(cur_state, cur_state | kHeldMask); } else { // Failed to acquire, hang up. + // We don't hold the mutex: GetExclusiveOwnerTid() is usually, but not always, correct. ScopedContentionRecorder scr(this, SafeGetTid(self), GetExclusiveOwnerTid()); // Empirically, it appears important to spin again each time through the loop; if we // bother to go to sleep and wake up, we should be fairly persistent in trying for the |