Line data    Source code

       1             : /*
       2             :  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
       3             :  *
       4             :  *  Use of this source code is governed by a BSD-style license
       5             :  *  that can be found in the LICENSE file in the root of the source
       6             :  *  tree. An additional intellectual property rights grant can be found
       7             :  *  in the file PATENTS.  All contributing project authors may
       8             :  *  be found in the AUTHORS file in the root of the source tree.
       9             :  */
      10             : 
      11             : #ifndef WEBRTC_SYSTEM_WRAPPERS_INCLUDE_STATIC_INSTANCE_H_
      12             : #define WEBRTC_SYSTEM_WRAPPERS_INCLUDE_STATIC_INSTANCE_H_
      13             : 
      14             : #include <assert.h>
      15             : 
      16             : #if defined(WEBRTC_ANDROID) || defined(WEBRTC_GONK)
      17             : #define OS_LINUX
      18             : #endif
      19             : #include "base/singleton.h"
      20             : 
      21             : namespace webrtc {
      22             : 
      23             : enum CountOperation {
      24             :   kRelease,
      25             :   kAddRef,
      26             :   kAddRefNoCreate
      27             : };
      28             : enum CreateOperation {
      29             :   kInstanceExists,
      30             :   kCreate,
      31             :   kDestroy
      32             : };
      33             : 
      34             : template <class T>
      35             : // Construct On First Use idiom. Avoids
      36             : // "static initialization order fiasco".
      37           0 : static T* GetStaticInstance(CountOperation count_operation) {
      38             :   // Simple solution since we don't use this for large objects anymore
      39           0 :   return Singleton<T>::get();
      40             : }
      41             : 
      42             : }  // namspace webrtc
      43             : 
      44             : #endif  // WEBRTC_SYSTEM_WRAPPERS_INCLUDE_STATIC_INSTANCE_H_