diff options
Diffstat (limited to 'objectivec/GPBMessage.m')
| -rw-r--r-- | objectivec/GPBMessage.m | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/objectivec/GPBMessage.m b/objectivec/GPBMessage.m index cc1a650a..a9f8bfe7 100644 --- a/objectivec/GPBMessage.m +++ b/objectivec/GPBMessage.m @@ -32,6 +32,7 @@ #import <objc/runtime.h> #import <objc/message.h> +#import <stdatomic.h> #import "GPBArray_PackagePrivate.h" #import "GPBCodedInputStream_PackagePrivate.h" @@ -742,14 +743,14 @@ void GPBClearMessageAutocreator(GPBMessage *self) { void GPBPrepareReadOnlySemaphore(GPBMessage *self) { #pragma clang diagnostic push #pragma clang diagnostic ignored "-Wdirect-ivar-access" -#pragma clang diagnostic ignored "-Wdeprecated-declarations" // Create the semaphore on demand (rather than init) as developers might not cause them // to be needed, and the heap usage can add up. The atomic swap is used to avoid needing // another lock around creating it. if (self->readOnlySemaphore_ == nil) { dispatch_semaphore_t worker = dispatch_semaphore_create(1); - if (!OSAtomicCompareAndSwapPtrBarrier(NULL, worker, (void * volatile *)&(self->readOnlySemaphore_))) { + dispatch_semaphore_t expected = nil; + if (!atomic_compare_exchange_strong(&self->readOnlySemaphore_, &expected, worker)) { dispatch_release(worker); } } |