1 /* <!-- copyright */ 2 /* 3 * aria2 - The high speed download utility 4 * 5 * Copyright (C) 2009 Tatsuhiro Tsujikawa 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 * 21 * In addition, as a special exception, the copyright holders give 22 * permission to link the code of portions of this program with the 23 * OpenSSL library under certain conditions as described in each 24 * individual source file, and distribute linked combinations 25 * including the two. 26 * You must obey the GNU General Public License in all respects 27 * for all of the code used other than OpenSSL. If you modify 28 * file(s) with this exception, you may extend this exception to your 29 * version of the file(s), but you are not obligated to do so. If you 30 * do not wish to do so, delete this exception statement from your 31 * version. If you delete this exception statement from all source 32 * files in the program, then also delete it here. 33 */ 34 /* copyright --> */ 35 #ifndef D_SEQUENTIAL_DISPATCHER_COMMAND_H 36 #define D_SEQUENTIAL_DISPATCHER_COMMAND_H 37 38 #include "Command.h" 39 40 #include <memory> 41 42 #include "SequentialPicker.h" 43 #include "DownloadEngine.h" 44 #include "RequestGroupMan.h" 45 46 namespace aria2 { 47 48 class DownloadEngine; 49 50 template <typename T> class SequentialDispatcherCommand : public Command { 51 private: 52 SequentialPicker<T>* picker_; 53 54 DownloadEngine* e_; 55 56 protected: getDownloadEngine()57 DownloadEngine* getDownloadEngine() const { return e_; } 58 59 public: SequentialDispatcherCommand(cuid_t cuid,SequentialPicker<T> * picker,DownloadEngine * e)60 SequentialDispatcherCommand(cuid_t cuid, SequentialPicker<T>* picker, 61 DownloadEngine* e) 62 : Command{cuid}, picker_{picker}, e_{e} 63 { 64 setStatusRealtime(); 65 } 66 execute()67 virtual bool execute() CXX11_OVERRIDE 68 { 69 if (e_->getRequestGroupMan()->downloadFinished() || e_->isHaltRequested()) { 70 return true; 71 } 72 if (picker_->hasNext() && !picker_->isPicked()) { 73 e_->addCommand(createCommand(picker_->pickNext())); 74 75 e_->setNoWait(true); 76 } 77 78 e_->addRoutineCommand(std::unique_ptr<Command>(this)); 79 return false; 80 } 81 82 protected: 83 virtual std::unique_ptr<Command> createCommand(T* entry) = 0; 84 }; 85 86 } // namespace aria2 87 88 #endif // D_SEQUENTIAL_DISPATCHER_COMMAND_H 89