KDECore
k3resolverworkerbase.h
Go to the documentation of this file.00001 /* -*- C++ -*- 00002 * Copyright (C) 2003-2005 Thiago Macieira <thiago@kde.org> 00003 * 00004 * 00005 * Permission is hereby granted, free of charge, to any person obtaining 00006 * a copy of this software and associated documentation files (the 00007 * "Software"), to deal in the Software without restriction, including 00008 * without limitation the rights to use, copy, modify, merge, publish, 00009 * distribute, sublicense, and/or sell copies of the Software, and to 00010 * permit persons to whom the Software is furnished to do so, subject to 00011 * the following conditions: 00012 * 00013 * The above copyright notice and this permission notice shall be included 00014 * in all copies or substantial portions of the Software. 00015 * 00016 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 00017 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 00018 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 00019 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 00020 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 00021 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 00022 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00023 */ 00024 00025 #ifndef KRESOLVERWORKERBASE_H 00026 #define KRESOLVERWORKERBASE_H 00027 00028 #include "k3resolver.h" 00029 00030 // forward declarations 00031 class QString; 00032 template <class T> class QValueList; 00033 00034 namespace KNetwork { 00035 00036 namespace Internal 00037 { 00038 class KResolverThread; 00039 struct InputData; 00040 } 00041 00060 class KResolverWorkerBase 00061 { 00062 public: 00063 00070 class ResolverLocker 00071 { 00072 public: 00076 ResolverLocker(KResolverWorkerBase* parent) 00077 : parent( parent ) 00078 { 00079 parent->acquireResolver(); 00080 } 00081 00085 ~ResolverLocker() 00086 { 00087 parent->releaseResolver(); 00088 } 00089 00095 void openClose() 00096 { 00097 parent->releaseResolver(); 00098 parent->acquireResolver(); 00099 } 00100 00101 private: 00103 KResolverWorkerBase* parent; 00104 }; 00105 private: 00106 // this will be like our d pointer 00107 KNetwork::Internal::KResolverThread *th; 00108 const KNetwork::Internal::InputData *input; 00109 friend class KNetwork::Internal::KResolverThread; 00110 friend class KNetwork::Internal::KResolverManager; 00111 friend class KResolverWorkerBase::ResolverLocker; 00112 00113 int m_finished : 1; 00114 int m_reserved : 31; // reserved 00115 00116 public: 00124 KResolverResults results; 00125 00126 public: 00127 // default constructor 00128 KResolverWorkerBase(); 00129 00130 // virtual destructor 00131 virtual ~KResolverWorkerBase(); 00132 00136 QString nodeName() const; 00137 00141 QString serviceName() const; 00142 00146 int flags() const; 00147 00151 int familyMask() const; 00152 00156 int socketType() const; 00157 00161 int protocol() const; 00162 00166 QByteArray protocolName() const; 00167 00174 void finished(); 00175 00176 protected: 00177 // like a QThread 00190 virtual bool run() = 0; 00191 00211 virtual bool preprocess() = 0; 00212 00221 virtual bool postprocess(); 00222 00226 inline void setError(int errorcode, int syserror = 0) 00227 { results.setError(errorcode, syserror); } 00228 00244 bool enqueue(KResolver* other); 00245 00249 bool enqueue(KResolverWorkerBase* worker); 00250 00257 bool checkResolver(); 00258 00268 void acquireResolver(); 00269 00274 void releaseResolver(); 00275 00276 }; 00277 00283 class KResolverWorkerFactoryBase 00284 { 00285 public: 00286 virtual ~KResolverWorkerFactoryBase() {} 00287 virtual KResolverWorkerBase* create() const = 0; 00293 static void registerNewWorker(KResolverWorkerFactoryBase* factory); 00294 }; 00295 00301 template<class Worker> 00302 class KResolverWorkerFactory: public KResolverWorkerFactoryBase 00303 { 00304 public: 00305 virtual KResolverWorkerBase* create() const 00306 { return new Worker; } 00307 }; 00308 00309 } // namespace KNetwork 00310 00311 #endif