src/native_client/src/shared/platform/nacl_interruptible_mutex.h

   1 /*
   2  * Copyright 2008 The Native Client Authors. All rights reserved.
   3  * Use of this source code is governed by a BSD-style license that can be
   4  * found in the LICENSE file.
   5  */
   6
   7 /*
   8  * NaCl Server Runtime interruptible binary mutex, based on nacl_sync
   9  * interface.
  10  */
  11 #ifndef NATIVE_CLIENT_SRC_TRUSTED_PLATFORM_NACL_INTERRUPTIBLE_MUTEX_H_
  12 #define NATIVE_CLIENT_SRC_TRUSTED_PLATFORM_NACL_INTERRUPTIBLE_MUTEX_H_
  13
  14 #include "native_client/src/include/nacl_base.h"
  15 #include "native_client/src/shared/platform/nacl_sync.h"
  16
  17 EXTERN_C_BEGIN
  18
  19 enum NaClIntrMutexState {
  20   NACL_INTR_LOCK_FREE,
  21   NACL_INTR_LOCK_HELD,
  22   NACL_INTR_LOCK_INTERRUPTED
  23 };
  24
  25 struct NaClIntrMutex {
  26   /* public */
  27   enum NaClIntrMutexState lock_state;
  28
  29   /* private */
  30   struct NaClMutex    mu;
  31   struct NaClCondVar  cv;
  32 };
  33
  34 int NaClIntrMutexCtor(struct NaClIntrMutex  *mp);
  35 /* bool success/fail */
  36
  37 void NaClIntrMutexDtor(struct NaClIntrMutex *mp);
  38
  39 NaClSyncStatus NaClIntrMutexLock(struct NaClIntrMutex  *mp);
  40
  41 NaClSyncStatus NaClIntrMutexTryLock(struct NaClIntrMutex *mp);
  42
  43 NaClSyncStatus NaClIntrMutexUnlock(struct NaClIntrMutex *mp);
  44
  45 void NaClIntrMutexIntr(struct NaClIntrMutex  *mp);
  46
  47 void NaClIntrMutexReset(struct NaClIntrMutex *mp);
  48
  49 EXTERN_C_END
  50
  51
  52 #endif  /* NATIVE_CLIENT_SRC_TRUSTED_PLATFORM_NACL_INTERRUPTIBLE_MUTEX_H_ */