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Re: render callback + pthread_cond_signal

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Re: render callback + pthread_cond_signal

Subject: Re: render callback + pthread_cond_signal
From: Ian Kemmish <email@hidden>
Date: Fri, 29 Oct 2010 21:05:25 +0100

On 28 Oct 2010, at 18:30, Scott Burgess <email@hidden> wrote:

Is calling pthread_cond_signal() from an AU render callback cool?
If not, what is the safe alternative to signal a UI or other thread?

For those situations where you need to be absolutely certain that you're not going to block, I find the OSAtomic...() functions in libkern/OSAtomic.h useful. They map to the atomic compare-and-swap instructions on both PPC and Intel CPUs, and allow you to control exactly what's going on.

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