diff options
Diffstat (limited to 'absl/synchronization/mutex.h')
| -rw-r--r-- | absl/synchronization/mutex.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/absl/synchronization/mutex.h b/absl/synchronization/mutex.h index d53a22bb..be3f1f56 100644 --- a/absl/synchronization/mutex.h +++ b/absl/synchronization/mutex.h @@ -148,7 +148,7 @@ struct SynchWaitParams; // // See also `MutexLock`, below, for scoped `Mutex` acquisition. -class ABSL_LOCKABLE Mutex { +class ABSL_LOCKABLE ABSL_ATTRIBUTE_WARN_UNUSED Mutex { public: // Creates a `Mutex` that is not held by anyone. This constructor is // typically used for Mutexes allocated on the heap or the stack. @@ -190,7 +190,7 @@ class ABSL_LOCKABLE Mutex { // If the mutex can be acquired without blocking, does so exclusively and // returns `true`. Otherwise, returns `false`. Returns `true` with high // probability if the `Mutex` was free. - bool TryLock() ABSL_EXCLUSIVE_TRYLOCK_FUNCTION(true); + ABSL_MUST_USE_RESULT bool TryLock() ABSL_EXCLUSIVE_TRYLOCK_FUNCTION(true); // Mutex::AssertHeld() // @@ -255,7 +255,7 @@ class ABSL_LOCKABLE Mutex { // If the mutex can be acquired without blocking, acquires this mutex for // shared access and returns `true`. Otherwise, returns `false`. Returns // `true` with high probability if the `Mutex` was free or shared. - bool ReaderTryLock() ABSL_SHARED_TRYLOCK_FUNCTION(true); + ABSL_MUST_USE_RESULT bool ReaderTryLock() ABSL_SHARED_TRYLOCK_FUNCTION(true); // Mutex::AssertReaderHeld() // @@ -281,7 +281,8 @@ class ABSL_LOCKABLE Mutex { void WriterUnlock() ABSL_UNLOCK_FUNCTION() { this->Unlock(); } - bool WriterTryLock() ABSL_EXCLUSIVE_TRYLOCK_FUNCTION(true) { + ABSL_MUST_USE_RESULT bool WriterTryLock() + ABSL_EXCLUSIVE_TRYLOCK_FUNCTION(true) { return this->TryLock(); } |