diff options
Diffstat (limited to 'src/corelib/thread/qreadwritelock.cpp')
| -rw-r--r-- | src/corelib/thread/qreadwritelock.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/corelib/thread/qreadwritelock.cpp b/src/corelib/thread/qreadwritelock.cpp index 96e35dcb965..2a1af2315ca 100644 --- a/src/corelib/thread/qreadwritelock.cpp +++ b/src/corelib/thread/qreadwritelock.cpp @@ -234,14 +234,14 @@ QBasicReadWriteLock::contendedTryLockForRead(QDeadlineTimer timeout, void *dd) return d->recursiveLockForRead(timeout); auto lock = qt_unique_lock(d->mutex); - if (d != d_ptr.loadRelaxed()) { + if (QReadWriteLockPrivate *dd = d_ptr.loadAcquire(); d != dd) { // d_ptr has changed: this QReadWriteLock was unlocked before we had // time to lock d->mutex. // We are holding a lock to a mutex within a QReadWriteLockPrivate // that is already released (or even is already re-used). That's ok // because the QFreeList never frees them. // Just unlock d->mutex (at the end of the scope) and retry. - d = d_ptr.loadAcquire(); + d = dd; continue; } return d->lockForRead(lock, timeout); @@ -340,11 +340,11 @@ QBasicReadWriteLock::contendedTryLockForWrite(QDeadlineTimer timeout, void *dd) return d->recursiveLockForWrite(timeout); auto lock = qt_unique_lock(d->mutex); - if (d != d_ptr.loadRelaxed()) { + if (QReadWriteLockPrivate *dd = d_ptr.loadAcquire(); d != dd) { // The mutex was unlocked before we had time to lock the mutex. // We are holding to a mutex within a QReadWriteLockPrivate that is already released // (or even is already re-used) but that's ok because the QFreeList never frees them. - d = d_ptr.loadAcquire(); + d = dd; continue; } return d->lockForWrite(lock, timeout); |