C++ (Cpp) _raw_write_trylock Examples

Example #1

File: spinlock.c Project: QiuLihua83/linux-2.6.10

int __lockfunc _write_trylock(rwlock_t *lock)
{
	preempt_disable();
	if (_raw_write_trylock(lock))
		return 1;

	preempt_enable();
	return 0;
}

Example #2

int __lockfunc _write_trylock(rwlock_t *lock)
{
	preempt_disable();
	if (_raw_write_trylock(lock)) {
		rwlock_acquire(&lock->dep_map, 0, 1, _RET_IP_);
		return 1;
	}

	preempt_enable();
	return 0;
}

Example #3

File: spinlock.c Project: QiuLihua83/linux-2.6.10

static inline void __preempt_write_lock(rwlock_t *lock)
{
	if (preempt_count() > 1) {
		_raw_write_lock(lock);
		return;
	}

	do {
		preempt_enable();
		while (rwlock_is_locked(lock))
			cpu_relax();
		preempt_disable();
	} while (!_raw_write_trylock(lock));
}

Example #4

File: spinlock.c Project: a2k2/xen-unstable

int _write_trylock(rwlock_t *lock)
{
    check_lock(&lock->debug);
    return _raw_write_trylock(&lock->raw);
}

Example #5

File: spinlock.c Project: QiuLihua83/linux-2.6.10

void __lockfunc _write_lock(rwlock_t *lock)
{
	preempt_disable();
	if (unlikely(!_raw_write_trylock(lock)))
		__preempt_write_lock(lock);
}