bionic/libc/kernel/common/linux/spinlock_up.h

/****************************************************************************
 ****************************************************************************
 ***
 ***   This header was automatically generated from a Linux kernel header
 ***   of the same name, to make information necessary for userspace to
 ***   call into the kernel available to libc.  It contains only constants,
 ***   structures, and macros generated from the original header, and thus,
 ***   contains no copyrightable information.
 ***
 ****************************************************************************
 ****************************************************************************/
#ifndef __LINUX_SPINLOCK_UP_H
#define __LINUX_SPINLOCK_UP_H

#ifndef __LINUX_SPINLOCK_H
#error "please don't include this file directly"
#endif

#define __raw_spin_is_locked(lock) ((void)(lock), 0)

#define __raw_spin_lock(lock) do { (void)(lock); } while (0)
#define __raw_spin_unlock(lock) do { (void)(lock); } while (0)
#define __raw_spin_trylock(lock) ({ (void)(lock); 1; })

#define __raw_read_can_lock(lock) (((void)(lock), 1))
#define __raw_write_can_lock(lock) (((void)(lock), 1))

#define __raw_spin_unlock_wait(lock)   do { cpu_relax(); } while (__raw_spin_is_locked(lock))

#endif