1 /* 2 * Copyright (C) 2009 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 V8ConsoleMessage_h 32 #define V8ConsoleMessage_h 33 34 #include "PlatformString.h" 35 #include <v8.h> 36 #include <wtf/Vector.h> 37 38 namespace WebCore { 39 40 class Page; 41 42 // V8ConsoleMessage encapsulates everything needed to 43 // log messages originating from JavaScript to the console. 44 class V8ConsoleMessage { 45 public: 46 V8ConsoleMessage(const String& string, const String& sourceID, unsigned lineNumber); 47 48 // Add a message to the console. May end up calling JavaScript code 49 // indirectly through the inspector so only call this function when 50 // it is safe to do allocations. 51 void dispatchNow(Page*); 52 53 // Add a message to the console but delay the reporting until it 54 // is safe to do so: Either when we leave JavaScript execution or 55 // when adding other console messages. The primary purpose of this 56 // method is to avoid calling into V8 to handle console messages 57 // when the VM is in a state that does not support GCs or allocations. 58 // Delayed messages are always reported in the page corresponding 59 // to the active context. 60 void dispatchLater(); 61 62 // Process any delayed messages. May end up calling JavaScript code 63 // indirectly through the inspector so only call this function when 64 // it is safe to do allocations. 65 static void processDelayed(); 66 67 // Convenience class for ensuring that delayed messages in the 68 // ConsoleMessageManager are processed quickly. 69 class Scope { 70 public: 71 Scope() { V8ConsoleMessage::processDelayed(); } 72 ~Scope() { V8ConsoleMessage::processDelayed(); } 73 }; 74 75 // Callback from V8. 76 static void handler(v8::Handle<v8::Message>, v8::Handle<v8::Value> data); 77 78 private: 79 const String m_string; 80 const String m_sourceID; 81 const unsigned m_lineNumber; 82 83 // All delayed messages are stored in this vector. If the vector 84 // is 0, there are no delayed messages. 85 static Vector<V8ConsoleMessage>* m_delayedMessages; 86 }; 87 88 } // namespace WebCore 89 90 #endif // V8ConsoleMessage_h 91
