Paul Durrant wrote:
On 28/05/07, Garrett D'Amore <[EMAIL PROTECTED]> wrote:
You should not attempt to acquire a lock which will be held by other
functions calling cv_wait, or its brethren. (There are ways to do that
safely, but it requires a fair bit of effort to make sure you do it
safely.)
I was not aware of this restriction, nor can I find it documented.
This suggests that one cannot call cv_signal() from within an
interrupt handler. Is this true?
No, and I mis-stated the above restriction. The restriction should
apply to mutexes held _across_ cv_wait. The mutex passed as an argument
to cv_wait is dropped by cv_wait, and not held during the sleep call, so
it can be acquired to do cv_signal.
-- Garrett
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