static
int init(struct audio_init *init)
{
int i;
channel = 0;
if (SndNewChannel(&channel, sampledSynth, 0, callback) != noErr) {
audio_error = _("SndNewChannel() failed");
return -1;
}
for (i = 0; i < NBUFFERS; ++i) {
if (MPCreateBinarySemaphore(&output[i].semaphore) != noErr) {
while (i--)
MPDeleteSemaphore(output[i].semaphore);
audio_error = _("failed to create synchronization object");
return -1;
}
output[i].pcm_nsamples = 0;
output[i].pcm_length = 0;
}
bindex = 0;
return 0;
}
OSStatus
MD_CriticalRegionCreate(MDCriticalRegionID * outCriticalRegionID)
{
MDCriticalRegionDataPtr newCriticalRegionPtr;
MPSemaphoreID mpSemaphoreID;
OSStatus err = noErr;
if (outCriticalRegionID == NULL)
return paramErr;
*outCriticalRegionID = NULL;
newCriticalRegionPtr = (MDCriticalRegionDataPtr)MPAllocateAligned(sizeof(MDCriticalRegionData),
kMPAllocateDefaultAligned, kMPAllocateClearMask);
if (newCriticalRegionPtr == NULL)
return memFullErr;
// Note: this semaphore is pre-fired (ready!)
err = MPCreateBinarySemaphore(&mpSemaphoreID);
if (err == noErr)
{
newCriticalRegionPtr->mMPTaskID = kInvalidID;
newCriticalRegionPtr->mDepthCount = 0;
newCriticalRegionPtr->mMPSemaphoreID = mpSemaphoreID;
*outCriticalRegionID = (MDCriticalRegionID)newCriticalRegionPtr;
}
else
{
MPFree((LogicalAddress)newCriticalRegionPtr);
}
return err;
}
wxMutexInternal::wxMutexInternal(wxMutexType mutexType )
{
m_isOk = false;
m_semaphore = kInvalidID;
OSStatus err = noErr;
switch ( mutexType )
{
case wxMUTEX_DEFAULT :
verify_noerr( MPCreateBinarySemaphore( &m_semaphore ) );
m_isOk = ( m_semaphore != kInvalidID );
break;
case wxMUTEX_RECURSIVE :
wxFAIL_MSG( wxT("Recursive Mutex not supported yet") );
break;
default :
wxFAIL_MSG( wxT("Unknown mutex type") );
break;
}
}
