1                 : /*
       2                 :  * Copyright 2008, Google Inc.
       3                 :  * All rights reserved.
       4                 :  *
       5                 :  * Redistribution and use in source and binary forms, with or without
       6                 :  * modification, are permitted provided that the following conditions are
       7                 :  * met:
       8                 :  *
       9                 :  *     * Redistributions of source code must retain the above copyright
      10                 :  * notice, this list of conditions and the following disclaimer.
      11                 :  *     * Redistributions in binary form must reproduce the above
      12                 :  * copyright notice, this list of conditions and the following disclaimer
      13                 :  * in the documentation and/or other materials provided with the
      14                 :  * distribution.
      15                 :  *     * Neither the name of Google Inc. nor the names of its
      16                 :  * contributors may be used to endorse or promote products derived from
      17                 :  * this software without specific prior written permission.
      18                 :  *
      19                 :  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      20                 :  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      21                 :  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      22                 :  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
      23                 :  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      24                 :  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
      25                 :  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      26                 :  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      27                 :  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      28                 :  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      29                 :  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      30                 :  */
      31                 : 
      32                 : 
      33                 : #ifndef NATIVE_CLIENT_SRC_INCLUDE_WIN_ATOMIC_OPS_WIN32_H_
      34                 : #define NATIVE_CLIENT_SRC_INCLUDE_WIN_ATOMIC_OPS_WIN32_H_ 1
      35                 : 
      36                 : #include "native_client/src/include/portability.h"
      37                 : #include <windows.h>
      38                 : 
      39                 : typedef LONG Atomic32;
      40                 : 
      41                 : static INLINE Atomic32
      42                 : CompareAndSwap(volatile Atomic32* ptr,
      43                 :                Atomic32 old_value,
      44               1 :                Atomic32 new_value) {
      45                 :   return InterlockedCompareExchange(ptr,
      46                 :                                     new_value,
      47               1 :                                     old_value);
      48               1 : }
      49                 : 
      50                 : static INLINE Atomic32
      51                 : AtomicExchange(volatile Atomic32* ptr,
      52               1 :                Atomic32 new_value) {
      53               1 :   return (Atomic32)InterlockedExchange(ptr, new_value);
      54               1 : }
      55                 : 
      56                 : static INLINE Atomic32
      57               8 : AtomicIncrement(volatile Atomic32* ptr, Atomic32 increment) {
      58                 :   Atomic32 result = InterlockedExchangeAdd(
      59                 : #ifdef WINCE
      60                 :      /* It seems that for WinCE InterlockedExchangeAdd takes LONG* as its first
      61                 :       * parameter. The cast is required to remove the volatile modifier.
      62                 :       */
      63                 :       (Atomic32*) ptr,
      64                 : #else
      65                 :       ptr,
      66                 : #endif
      67               8 :       increment);
      68               8 :   return result + increment;
      69               8 : }
      70                 : 
      71                 : #endif  /* NATIVE_CLIENT_SRC_INCLUDE_WIN_ATOMIC_OPS_WIN32_H_ */