// Block the task until the semaphore is acquired or the timeout expires
OsStatus OsCSemLinux::acquire(const OsTime& rTimeout)
{
struct timespec timeout;
OsStatus res;
if (rTimeout.isInfinite())
res = (pt_sem_wait(&mSemImp) == POSIX_OK) ? OS_SUCCESS : OS_BUSY;
else if (rTimeout.isNoWait())
res = (pt_sem_trywait(&mSemImp) == POSIX_OK) ? OS_SUCCESS : OS_BUSY;
else
{
OsUtilLinux::cvtOsTimeToTimespec(rTimeout, &timeout);
res = (pt_sem_timedwait(&mSemImp, &timeout) == POSIX_OK) ? OS_SUCCESS : OS_WAIT_TIMEOUT;
}
#ifdef OS_CSEM_DEBUG
if (res == OS_SUCCESS)
{
updateAcquireStats();
}
#endif
#ifdef OS_SYNC_DEBUG
if (res == OS_SUCCESS)
{
mSyncCrumbs.dropCrumb(pthread_self(), crumbAcquired);
}
#endif
return res;
}
// Conditionally acquire the semaphore (i.e., don't block)
// Return OS_BUSY if the semaphore is held by some other task
OsStatus OsCSemWnt::tryAcquire(void)
{
OsStatus res = OsUtilWnt::synchObjTryAcquire(mSemImp);
#ifdef OS_CSEM_DEBUG
if (res == OS_SUCCESS)
updateAcquireStats();
#endif
return res;
}
// Block the task until the semaphore is acquired or the timeout expires
OsStatus OsCSemWnt::acquire(const OsTime& rTimeout)
{
OsStatus res = OsUtilWnt::synchObjAcquire(mSemImp, rTimeout);
#ifdef OS_CSEM_DEBUG
if (res == OS_SUCCESS)
updateAcquireStats();
#endif
return res;
}
// Conditionally acquire the semaphore (i.e., don't block)
// Return OS_BUSY if the semaphore is held by some other task
OsStatus OsCSemLinux::tryAcquire(void)
{
OsStatus res;
res = (pt_sem_trywait(&mSemImp) == POSIX_OK) ? OS_SUCCESS : OS_BUSY;
#ifdef OS_CSEM_DEBUG
if (res == OS_SUCCESS)
updateAcquireStats();
#endif
return res;
}
// Conditionally acquire the semaphore (i.e., don't block)
// Return OS_BUSY if the semaphore is held by some other task
OsStatus OsCSemLinux::tryAcquire(void)
{
OsStatus res;
res = (pt_sem_trywait(&mSemImp) == POSIX_OK) ? OS_SUCCESS : OS_BUSY;
#ifdef OS_CSEM_DEBUG
if (res == OS_SUCCESS)
{
updateAcquireStats();
}
#endif
#ifdef OS_SYNC_DEBUG
if (res == OS_SUCCESS)
{
mSyncCrumbs.dropCrumb(pthread_self(), crumbAcquired);
}
#endif
return res;
}
