KDE 3.5 API Reference KDECore
kresolverworkerbase.h
Go to the documentation of this file.00001 /* -*- C++ -*- 00002 * Copyright (C) 2003,2004 Thiago Macieira <thiago.macieira@kdemail.net> 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 "kresolver.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 00071 class ResolverLocker 00072 { 00073 public: 00077 ResolverLocker(KResolverWorkerBase* parent) 00078 : parent( parent ) 00079 { 00080 parent->acquireResolver(); 00081 } 00082 00086 ~ResolverLocker() 00087 { 00088 parent->releaseResolver(); 00089 } 00090 00096 void openClose() 00097 { 00098 parent->releaseResolver(); 00099 parent->acquireResolver(); 00100 } 00101 00102 private: 00104 KResolverWorkerBase* parent; 00105 }; 00106 private: 00107 // this will be like our d pointer 00108 KNetwork::Internal::KResolverThread *th; 00109 const KNetwork::Internal::InputData *input; 00110 friend class KNetwork::Internal::KResolverThread; 00111 friend class KNetwork::Internal::KResolverManager; 00112 friend class KResolverWorkerBase::ResolverLocker; 00113 00114 int m_finished : 1; 00115 int m_reserved : 31; // reserved 00116 00117 public: 00125 KResolverResults results; 00126 00127 public: 00128 // default constructor 00129 KResolverWorkerBase(); 00130 00131 // virtual destructor 00132 virtual ~KResolverWorkerBase(); 00133 00137 QString nodeName() const; 00138 00142 QString serviceName() const; 00143 00147 int flags() const; 00148 00152 int familyMask() const; 00153 00157 int socketType() const; 00158 00162 int protocol() const; 00163 00167 QCString protocolName() const; 00168 00175 void finished(); 00176 00177 protected: 00178 // like a QThread 00191 virtual bool run() = 0; 00192 00212 virtual bool preprocess() = 0; 00213 00222 virtual bool postprocess(); 00223 00227 inline void setError(int errorcode, int syserror = 0) 00228 { results.setError(errorcode, syserror); } 00229 00245 bool enqueue(KResolver* other); 00246 00250 bool enqueue(KResolverWorkerBase* worker); 00251 00259 bool checkResolver(); 00260 00272 void acquireResolver(); 00273 00280 void releaseResolver(); 00281 00282 }; 00283 00289 class KResolverWorkerFactoryBase 00290 { 00291 public: 00292 virtual KResolverWorkerBase* create() const = 0; 00293 00299 static void registerNewWorker(KResolverWorkerFactoryBase* factory); 00300 }; 00301 00307 template<class Worker> 00308 class KResolverWorkerFactory: public KResolverWorkerFactoryBase 00309 { 00310 public: 00311 virtual KResolverWorkerBase* create() const 00312 { return new Worker; } 00313 }; 00314 00315 } // namespace KNetwork 00316 00317 #endif
