content/child/scoped_child_process_reference.h

   1 // Copyright 2013 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 CONTENT_CHILD_SCOPED_CHILD_PROCESS_REFERENCE_H_
   6 #define CONTENT_CHILD_SCOPED_CHILD_PROCESS_REFERENCE_H_
   7
   8 #include "base/basictypes.h"
   9
  10 namespace base {
  11 class TimeDelta;
  12 }
  13
  14 namespace content {
  15
  16 // Scoper class that automatically adds a reference to the current child
  17 // process in constructor and releases the reference on scope out.
  18 // Consumers of this class can call ReleaseWithDelay() to explicitly release
  19 // the reference with a certain delay.
  20 class ScopedChildProcessReference {
  21  public:
  22   ScopedChildProcessReference();
  23   ~ScopedChildProcessReference();
  24
  25   // Releases the process reference after |delay|. Once this is called
  26   // scoping out has no effect.
  27   // It is not valid to call this more than once.
  28   void ReleaseWithDelay(const base::TimeDelta& delay);
  29
  30  private:
  31   bool has_reference_;
  32   DISALLOW_COPY_AND_ASSIGN(ScopedChildProcessReference);
  33 };
  34
  35 }  // namespace content
  36
  37 #endif  // CONTENT_CHILD_SCOPED_CHILD_PROCESS_REFERENCE_H_