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      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_
     38