Questions on adaptive mutexes and trylock
Joe Marcus Clarke
marcus at marcuscom.com
Wed May 9 15:27:25 UTC 2012
The newest GLib (as well as PHP APC) is starting to use adaptive mutexes
in their code. When a mutex type is set to adaptive and you try to call
pthread_mutex_trylock() on it, you get back an EINVAL. Is this a bug,
or should this really be happening (the code clearly indicates adaptive
mutexes are not handled by trylock)?
I imagine Linux is not doing this since the code doesn't abort on Linux
as it does on FreeBSD. Should we be silently allowing trylock to
perform a no-op on adaptive mutexes, or should we be handling adaptive
mutexes with trylock? Thanks.
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