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 GenericWorkerTask_h 32 #define GenericWorkerTask_h 33 34 #if ENABLE(WORKERS) 35 36 #include "WorkerMessagingProxy.h" 37 #include "ScriptExecutionContext.h" 38 #include <wtf/PassRefPtr.h> 39 40 namespace WebCore { 41 class GenericWorkerTaskBase : public ScriptExecutionContext::Task { 42 protected: GenericWorkerTaskBase(WorkerMessagingProxy * messagingProxy)43 GenericWorkerTaskBase(WorkerMessagingProxy* messagingProxy) : m_messagingProxy(messagingProxy) 44 { 45 } 46 canPerformTask()47 bool canPerformTask() 48 { 49 return !m_messagingProxy->askedToTerminate(); 50 } 51 52 WorkerMessagingProxy* m_messagingProxy; 53 }; 54 55 template<typename P1, typename MP1, typename P2, typename MP2, typename P3, typename MP3, typename P4, typename MP4, typename P5, typename MP5, typename P6, typename MP6> 56 class GenericWorkerTask6 : public GenericWorkerTaskBase { 57 public: 58 typedef void (*Method)(ScriptExecutionContext*, MP1, MP2, MP3, MP4, MP5, MP6); 59 typedef GenericWorkerTask6<P1, MP1, P2, MP2, P3, MP3, P4, MP4, P5, MP5, P6, MP6> GenericWorkerTask; 60 create(WorkerMessagingProxy * messagingProxy,Method method,const P1 & parameter1,const P2 & parameter2,const P3 & parameter3,const P4 & parameter4,const P5 & parameter5,const P6 & parameter6)61 static PassRefPtr<GenericWorkerTask> create(WorkerMessagingProxy* messagingProxy, Method method, const P1& parameter1, const P2& parameter2, const P3& parameter3, const P4& parameter4, const P5& parameter5, const P6& parameter6) 62 { 63 return adoptRef(new GenericWorkerTask(messagingProxy, method, parameter1, parameter2, parameter3, parameter4, parameter5, parameter6)); 64 } 65 66 private: GenericWorkerTask6(WorkerMessagingProxy * messagingProxy,Method method,const P1 & parameter1,const P2 & parameter2,const P3 & parameter3,const P4 & parameter4,const P5 & parameter5,const P6 & parameter6)67 GenericWorkerTask6(WorkerMessagingProxy* messagingProxy, Method method, const P1& parameter1, const P2& parameter2, const P3& parameter3, const P4& parameter4, const P5& parameter5, const P6& parameter6) 68 : GenericWorkerTaskBase(messagingProxy) 69 , m_method(method) 70 , m_parameter1(parameter1) 71 , m_parameter2(parameter2) 72 , m_parameter3(parameter3) 73 , m_parameter4(parameter4) 74 , m_parameter5(parameter5) 75 , m_parameter6(parameter6) 76 { 77 } 78 performTask(ScriptExecutionContext * context)79 virtual void performTask(ScriptExecutionContext* context) 80 { 81 if (!canPerformTask()) 82 return; 83 (*m_method)(context, m_parameter1, m_parameter2, m_parameter3, m_parameter4, m_parameter5, m_parameter6); 84 } 85 86 private: 87 Method m_method; 88 P1 m_parameter1; 89 P2 m_parameter2; 90 P3 m_parameter3; 91 P4 m_parameter4; 92 P5 m_parameter5; 93 P6 m_parameter6; 94 }; 95 96 template<typename P1, typename MP1, typename P2, typename MP2, typename P3, typename MP3, typename P4, typename MP4, typename P5, typename MP5, typename P6, typename MP6> createCallbackTask(WorkerMessagingProxy * messagingProxy,void (* method)(ScriptExecutionContext *,MP1,MP2,MP3,MP4,MP5,MP6),const P1 & parameter1,const P2 & parameter2,const P3 & parameter3,const P4 & parameter4,const P5 & parameter5,const P6 & parameter6)97 PassRefPtr<GenericWorkerTask6<P1, MP1, P2, MP2, P3, MP3, P4, MP4, P5, MP5, P6, MP6> > createCallbackTask( 98 WorkerMessagingProxy* messagingProxy, 99 void (*method)(ScriptExecutionContext*, MP1, MP2, MP3, MP4, MP5, MP6), 100 const P1& parameter1, const P2& parameter2, const P3& parameter3, const P4& parameter4, const P5& parameter5, const P6& parameter6) 101 { 102 return GenericWorkerTask6<P1, MP1, P2, MP2, P3, MP3, P4, MP4, P5, MP5, P6, MP6>::create(messagingProxy, method, parameter1, parameter2, parameter3, parameter4, parameter5, parameter6); 103 } 104 105 } // namespace WebCore 106 107 #endif // ENABLE(WORKERS) 108 109 #endif // GenericWorkerTask_h 110