chrome/tools/crash_service/caps/process_singleton_win.h

   1 // Copyright 2015 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 CHROME_TOOLS_CRASH_SERVICE_CAPS_PROCESS_SINGLETON_WIN_H_
   6 #define CHROME_TOOLS_CRASH_SERVICE_CAPS_PROCESS_SINGLETON_WIN_H_
   7
   8 #include <windows.h>
   9
  10 #include "base/macros.h"
  11
  12 namespace caps {
  13 // Uses a named mutex to make sure that only one process of
  14 // with this particular version is launched.
  15 class ProcessSingleton {
  16 public:
  17   ProcessSingleton();
  18   ~ProcessSingleton();
  19   bool other_instance() const { return mutex_ == NULL; }
  20
  21 private:
  22   HANDLE mutex_;
  23
  24   DISALLOW_COPY_AND_ASSIGN(ProcessSingleton);
  25 };
  26
  27 }  // namespace caps
  28
  29 #endif  // CHROME_TOOLS_CRASH_SERVICE_CAPS_PROCESS_SINGLETON_WIN_H_
  30