1 /* 2 * Copyright (C) 2009 Apple Inc. All rights reserved. 3 * Copyright (C) 2013 Google Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef ArrayBufferDeallocationObserver_h 28 #define ArrayBufferDeallocationObserver_h 29 30 namespace WTF { 31 32 class ArrayBufferContents; 33 34 // The current implementation assumes that the instance of this class is a 35 // singleton living for the entire process's lifetime. 36 class ArrayBufferDeallocationObserver { 37 public: 38 virtual void arrayBufferDeallocated(unsigned sizeInBytes) = 0; 39 40 protected: 41 // Called when Blink-allocated ArrayBuffer becomes available to JavaScript. 42 // Not called for JavaScript-allocated ArrayBuffers. 43 virtual void blinkAllocatedMemory(unsigned sizeInBytes) = 0; 44 45 friend class ArrayBufferContents; 46 }; 47 48 } // namespace WTF 49 50 #endif // ArrayBufferDeallocationObserver_h 51