Method: ConcurrentSHM::Mutex#try_lock

Defined in:
ext/concurrent-shm/posix.c

#try_lock ⇒ Boolean

Attempts to lock the mutex.

Returns:

  • (Boolean) —

    true if the lock was acquired

Raises:

  • (Errno::EAGAIN) —

    if the mutex could not be acquired because the maximum number of recursive locks for mutex has been exceeded



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# File 'ext/concurrent-shm/posix.c', line 597

static VALUE mutex_try_lock(VALUE self)
{
    mutex_t * mu = value_as_mutex(self);
    int err = pthread_mutex_trylock(&mu->shared->mu);
    switch (err) {
    case 0:
        return Qtrue;
    case EBUSY:
        return Qfalse;
    default:
        rb_syserr_fail_strf(err, "mutex_try_lock");
    }
}