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.