1 files changed, 33 insertions, 0 deletions
diff --git a/chromium/chrome/common/multi_process_lock.h b/chromium/chrome/common/multi_process_lock.h
new file mode 100644
index 00000000000..622c58fba3b
--- /dev/null
+++ b/chromium/chrome/common/multi_process_lock.h
@@ -0,0 +1,33 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_COMMON_MULTI_PROCESS_LOCK_H_
+#define CHROME_COMMON_MULTI_PROCESS_LOCK_H_
+
+#include <sys/types.h>
+#include <memory>
+#include <string>
+
+// Platform abstraction for a lock that can be shared between processes.
+// The process that owns the lock will release it on exit even if
+// the exit is due to a crash. Locks are not recursive.
+class MultiProcessLock {
+ public:
+  // Factory method for creating a multi-process lock.
+  // |name| is the name of the lock. The name has special meaning on Windows
+  // where the prefix can determine the namespace of the lock.
+  // See http://msdn.microsoft.com/en-us/library/aa382954(v=VS.85).aspx for
+  // details.
+  static std::unique_ptr<MultiProcessLock> Create(const std::string& name);
+
+  virtual ~MultiProcessLock() { }
+
+  // Try to grab ownership of the lock.
+  virtual bool TryLock() = 0;
+
+  // Release ownership of the lock.
+  virtual void Unlock() = 0;
+};
+
+#endif  // CHROME_COMMON_MULTI_PROCESS_LOCK_H_