1 /* 2 * Copyright (C) 2010 Google 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 are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef WebThreadSafeData_h 32 #define WebThreadSafeData_h 33 34 #include "WebCommon.h" 35 #include "WebPrivatePtr.h" 36 37 #if !WEBKIT_IMPLEMENTATION 38 #include <string> 39 #endif 40 41 namespace WebCore { class RawData; } 42 43 namespace WebKit { 44 45 // A container for raw bytes. It is inexpensive to copy a WebThreadSafeData object. 46 // It is safe to pass a WebThreadSafeData across threads!!! 47 class WebThreadSafeData { 48 public: 49 WebThreadSafeData() { } 50 ~WebThreadSafeData() { reset(); } 51 52 WEBKIT_API void assign(const WebThreadSafeData&); 53 WEBKIT_API void reset(); 54 55 WEBKIT_API size_t size() const; 56 WEBKIT_API const char* data() const; 57 58 bool isEmpty() const { return !size(); } 59 60 #if WEBKIT_IMPLEMENTATION 61 WebThreadSafeData(const WTF::PassRefPtr<WebCore::RawData>&); 62 WebThreadSafeData& operator=(const WTF::PassRefPtr<WebCore::RawData>&); 63 #else 64 operator std::string() const 65 { 66 size_t len = size(); 67 return len ? std::string(data(), len) : std::string(); 68 } 69 #endif 70 71 private: 72 WebPrivatePtr<WebCore::RawData> m_private; 73 }; 74 75 } // namespace WebKit 76 77 #endif 78
