rlz/win/lib/lib_mutex.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef RLZ_WIN_LIB_LIB_MUTEX_H_
   6 #define RLZ_WIN_LIB_LIB_MUTEX_H_
   7
   8 #include <windows.h>
   9
  10 namespace rlz_lib {
  11 // Cross-process mutex to guarantee serialization of RLZ key accesses.
  12 class LibMutex {
  13  public:
  14   LibMutex();
  15   ~LibMutex();
  16
  17   bool failed() const { return !acquired_; }
  18
  19  private:
  20   bool acquired_;
  21   HANDLE mutex_;
  22 };
  23
  24 }  // namespace rlz_lib
  25
  26 #endif  // RLZ_WIN_LIB_LIB_MUTEX_H_