void Signal::Wait()
{
DWORD ret;
bool stuck;
SetWaiting(true);
stuck = false;
while (true)
{
DWORD timeout = 10000;
//ret = WaitForSingleObject((HANDLE) impl.event, INFINITE);
ret = WaitForSingleObject((HANDLE) impl.event, timeout);
if (ret == WAIT_FAILED)
Log_Errno();
if (ret != WAIT_OBJECT_0 && ret != WAIT_TIMEOUT)
Log_Debug("WaitForSingleObject: ret %d", ret);
if (ret == WAIT_TIMEOUT)
{
if (stuck == false)
{
//Log_Debug("Waiting for long: %p in %U", this, ThreadPool::GetThreadID());
stuck = true;
}
continue;
}
break;
}
SetWaiting(false);
}
void Signal::Wait()
{
DWORD ret;
SetWaiting(true);
ret = WaitForSingleObject((HANDLE) impl.event, INFINITE);
if (ret == WAIT_FAILED)
Log_Errno();
if (ret != WAIT_OBJECT_0)
Log_Debug("WaitForSingleObject: ret %d", ret);
SetWaiting(false);
}
//------------------------------------------------------------------------------
// GetBuffer
// get container for a sample. Blocking, synchronous call to get the
// next free buffer (as represented by an IMediaSample interface).
// on return, the time etc properties will be invalid and in this case
// the buffer pointer and size will be set when the app returns a buffer.
HRESULT CCustomAllocator::GetBuffer(IMediaSample** ppBuffer, REFERENCE_TIME* pStartTime, REFERENCE_TIME* pEndTime, DWORD dwFlags)
{
UNREFERENCED_PARAMETER(pStartTime);
UNREFERENCED_PARAMETER(pEndTime);
UNREFERENCED_PARAMETER(dwFlags);
CMediaSample* pSample;
*ppBuffer = NULL;
for (;;)
{
{ // scope for lock
CAutoLock cObjectLock(this);
/* Check we are committed */
if (!m_bCommitted)
{
return VFW_E_NOT_COMMITTED;
}
pSample = (CMediaSample*)m_lDeliver.RemoveHead();
if (pSample == NULL)
{
SetWaiting();
}
}
/* If we didn't get a sample then wait for the list to signal */
if (pSample)
{
break;
}
if (dwFlags & AM_GBF_NOWAIT)
{
return VFW_E_TIMEOUT;
}
ASSERT(m_hSem != NULL);
WaitForSingleObject(m_hSem, INFINITE);
}
/* Addref the buffer up to one. On release
back to zero instead of being deleted, it will requeue itself by
calling the ReleaseBuffer member function. NOTE the owner of a
media sample must always be derived from CBaseAllocator */
ASSERT(pSample->m_cRef == 0);
pSample->m_cRef = 1;
*ppBuffer = pSample;
DbgLog((LOG_TRACE, DBG_MEM, TEXT("CCustomAllocator::GetBuffer(): m_lFree: %d m_lDeliver: %d"), m_lFree.GetCount(), m_lDeliver.GetCount()));
return NOERROR;
}
