mutex_trylock (9) - Linux Manuals
mutex_trylock: try to acquire the mutex, without waiting
NAME
mutex_trylock - try to acquire the mutex, without waiting
SYNOPSIS
-
int __sched mutex_trylock(struct mutex
* lock);
ARGUMENTS
lock
-
- the mutex to be acquired
DESCRIPTION
Try to acquire the mutex atomically. Returns 1 if the mutex has been acquired successfully, and 0 on contention.
NOTE
this function follows the spin_trylock convention, so it is negated from the down_trylock return values! Be careful about this when converting semaphore users to mutexes.
This function must not be used in interrupt context. The mutex must be released by the same task that acquired it.
AUTHOR
Rusty Russell <rusty [at] rustcorp.com.au>
- Author.
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