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| |
| #include "qplatformdefs.h" |
| #include "qmutex.h" |
| #include "qmutex_p.h" |
| |
| #include <mach/mach.h> |
| #include <mach/task.h> |
| |
| #include <errno.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| QMutexPrivate::QMutexPrivate() |
| { |
| kern_return_t r = semaphore_create(mach_task_self(), &mach_semaphore, SYNC_POLICY_FIFO, 0); |
| if (r != KERN_SUCCESS) |
| qWarning("QMutex: failed to create semaphore, error %d", r); |
| } |
| |
| QMutexPrivate::~QMutexPrivate() |
| { |
| kern_return_t r = semaphore_destroy(mach_task_self(), mach_semaphore); |
| if (r != KERN_SUCCESS) |
| qWarning("QMutex: failed to destroy semaphore, error %d", r); |
| } |
| |
| bool QMutexPrivate::wait(int timeout) |
| { |
| kern_return_t r; |
| if (timeout < 0) { |
| do { |
| r = semaphore_wait(mach_semaphore); |
| } while (r == KERN_ABORTED); |
| Q_ASSERT(r == KERN_SUCCESS); |
| } else { |
| mach_timespec_t ts; |
| ts.tv_nsec = ((timeout % 1000) * 1000) * 1000; |
| ts.tv_sec = (timeout / 1000); |
| r = semaphore_timedwait(mach_semaphore, ts); |
| } |
| return (r == KERN_SUCCESS); |
| } |
| |
| void QMutexPrivate::wakeUp() noexcept |
| { |
| semaphore_signal(mach_semaphore); |
| } |
| |
| |
| QT_END_NAMESPACE |