[Bug 29585] wineoss.drv audio renderer not on par with others

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=29585

--- Comment #3 from Jörg Höhle <hoehle at users.sourceforge.net> 2012-01-23 04:35:05 CST ---
The next improvement to winealsa and wineoss design:
9. Split use of the critical section This->lock
a) One prevents several app threads from calling the API concurrently.
b) The second one shall prevent the internal callback from operating on the
slots that Get/ReleaseBuffer modify concurrently.

It is not good that bombarding the API with ReleaseBuffer(0) or
GetCurrentPadding blocks the audio callback.  Instead of an internal lock, we
should investigate the opportunity for a lock-less design.  Then, the kernel
would never put the callback to sleep in EnterCriticalSection.  What kernel
expert knows how much later a thread recovers from such a sleep?

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