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pa_mac_core_blocking: fix hang when running stream stopped

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One thread was filling the buffer while
another thread was waiting for it to be empty.

Add thread safety warnings.

Fix ticket #252
This commit is contained in:
Phil Burk 2016-08-27 13:53:10 -07:00
commit 0bc7cf9465
5 changed files with 235 additions and 41 deletions
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10
include/portaudio.h
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@ -934,7 +934,7 @@ PaError Pa_CloseStream( PaStream *stream );
(ie once a call to Pa_StopStream() will not block).
A stream will become inactive after the stream callback returns non-zero,
or when Pa_StopStream or Pa_AbortStream is called. For a stream providing audio
output, if the stream callback returns paComplete, or Pa_StopStream is called,
output, if the stream callback returns paComplete, or Pa_StopStream() is called,
the stream finished callback will not be called until all generated sample data
has been played.
@ -1132,7 +1132,7 @@ PaError Pa_ReadStream( PaStream* stream,
/** Write samples to an output stream. This function doesn't return until the
entire buffer has been consumed - this may involve waiting for the operating
entire buffer has been written - this may involve waiting for the operating
system to consume the data.
@param stream A pointer to an open stream previously created with Pa_OpenStream.
@ -1149,9 +1149,9 @@ PaError Pa_ReadStream( PaStream* stream,
will want to match this parameter to the framesPerBuffer parameter used
when opening the stream.
@return On success PaNoError will be returned, or paOutputUnderflowed if
additional output data was inserted after the previous call and before this
call.
@return On success PaNoError will be returned,
or paOutputUnderflowed if additional output data was inserted after the
previous call and before this call.
*/
PaError Pa_WriteStream( PaStream* stream,
const void *buffer,