ndk/platforms/android-16/arch-arm/usr/include/asm/semaphore.h

   1 /****************************************************************************
   2  ****************************************************************************
   3  ***
   4  ***   This header was automatically generated from a Linux kernel header
   5  ***   of the same name, to make information necessary for userspace to
   6  ***   call into the kernel available to libc.  It contains only constants,
   7  ***   structures, and macros generated from the original header, and thus,
   8  ***   contains no copyrightable information.
   9  ***
  10  ****************************************************************************
  11  ****************************************************************************/
  12 #ifndef __ASM_ARM_SEMAPHORE_H
  13 #define __ASM_ARM_SEMAPHORE_H
  14
  15 #include <linux/linkage.h>
  16 #include <linux/spinlock.h>
  17 #include <linux/wait.h>
  18 #include <linux/rwsem.h>
  19
  20 #include <asm/atomic.h>
  21 #include <asm/locks.h>
  22
  23 struct semaphore {
  24  atomic_t count;
  25  int sleepers;
  26  wait_queue_head_t wait;
  27 };
  28
  29 #define __SEMAPHORE_INIT(name, cnt)  {   .count = ATOMIC_INIT(cnt),   .wait = __WAIT_QUEUE_HEAD_INITIALIZER((name).wait),  }
  30
  31 #define __DECLARE_SEMAPHORE_GENERIC(name,count)   struct semaphore name = __SEMAPHORE_INIT(name,count)
  32
  33 #define DECLARE_MUTEX(name) __DECLARE_SEMAPHORE_GENERIC(name,1)
  34 #define DECLARE_MUTEX_LOCKED(name) __DECLARE_SEMAPHORE_GENERIC(name,0)
  35
  36 #endif