kc3-lang/angle/src/common/RefCountObject.cpp

Branch : - branch - main - tag -

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• Author : apatrick@chromium.org
  Date : 2012-01-23 20:04:48
  Hash : b66a7015
  Message : Moved RefCountObject to common so it can be used by libEGL. Review URL: https://codereview.appspot.com/5557064 git-svn-id: https://angleproject.googlecode.com/svn/trunk@956 736b8ea6-26fd-11df-bfd4-992fa37f6226

• src/common/RefCountObject.cpp

• //
  // Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  // RefCountObject.cpp: Defines the gl::RefCountObject base class that provides
  // lifecycle support for GL objects using the traditional BindObject scheme, but
  // that need to be reference counted for correct cross-context deletion.
  // (Concretely, textures, buffers and renderbuffers.)
  
  #include "RefCountObject.h"
  
  RefCountObject::RefCountObject(GLuint id)
  {
      mId = id;
      mRefCount = 0;
  }
  
  RefCountObject::~RefCountObject()
  {
      ASSERT(mRefCount == 0);
  }
  
  void RefCountObject::addRef() const
  {
      mRefCount++;
  }
  
  void RefCountObject::release() const
  {
      ASSERT(mRefCount > 0);
  
      if (--mRefCount == 0)
      {
          delete this;
      }
  }
  
  void RefCountObjectBindingPointer::set(RefCountObject *newObject)
  {
      // addRef first in case newObject == mObject and this is the last reference to it.
      if (newObject != NULL) newObject->addRef();
      if (mObject != NULL) mObject->release();
  
      mObject = newObject;
  }