1 /* 2 * Copyright (C) 2011 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef WebGLContextGroup_h 27 #define WebGLContextGroup_h 28 29 #include "core/html/canvas/WebGLRenderingContextBase.h" 30 #include "wtf/HashSet.h" 31 #include "wtf/PassRefPtr.h" 32 #include "wtf/RefCounted.h" 33 34 namespace blink { 35 class WebGraphicsContext3D; 36 } 37 38 namespace blink { 39 40 class WebGLExtension; 41 class WebGLSharedObject; 42 class WebGLRenderingContextBase; 43 44 typedef int ExceptionCode; 45 46 class WebGLContextGroup FINAL : public RefCounted<WebGLContextGroup> { 47 public: 48 static PassRefPtr<WebGLContextGroup> create(); 49 ~WebGLContextGroup(); 50 51 void addContext(WebGLRenderingContextBase*); 52 void removeContext(WebGLRenderingContextBase*); 53 54 void addObject(WebGLSharedObject*); 55 void removeObject(WebGLSharedObject*); 56 57 blink::WebGraphicsContext3D* getAWebGraphicsContext3D(); 58 59 void loseContextGroup(WebGLRenderingContextBase::LostContextMode, WebGLRenderingContextBase::AutoRecoveryMethod); 60 61 private: 62 friend class WebGLObject; 63 64 WebGLContextGroup(); 65 66 void detachAndRemoveAllObjects(); 67 68 // FIXME: Oilpan: this object is not on the heap, but keeps bare 69 // pointers to garbage collected objects in the two hash sets 70 // below. The objects are responsible for managing their 71 // registration with WebGLContextGroup, and vice versa, the 72 // WebGLContextGroup takes care of detaching the group objects if 73 // the set of WebGLRenderingContextBase contexts becomes empty. 74 HashSet<WebGLRenderingContextBase*> m_contexts; 75 HashSet<WebGLSharedObject*> m_groupObjects; 76 }; 77 78 } // namespace blink 79 80 #endif // WebGLContextGroup_h 81