2010-04-20 Tatsuhiro Tsujikawa <t-tujikawa@users.sourceforge.net>

	Externalized Event, CommandEvent, ADNSEvent, SocketEntry and
	AsyncNameResolverEntry class.
	* src/Event.h
	* src/Makefile.am
	* src/PollEventPoll.cc
	* src/PollEventPoll.h

ChangeLog

@@ -1,3 +1,12 @@
+2010-04-20  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
+
+	Externalized Event, CommandEvent, ADNSEvent, SocketEntry and
+	AsyncNameResolverEntry class.
+	* src/Event.h
+	* src/Makefile.am
+	* src/PollEventPoll.cc
+	* src/PollEventPoll.h
+
 2010-04-19  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
 
 	Supported poll() for socket event notification.  --event-poll can

src/Event.h

@@ -0,0 +1,378 @@
+/* <!-- copyright */
+/*
+ * aria2 - The high speed download utility
+ *
+ * Copyright (C) 2010 Tatsuhiro Tsujikawa
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * In addition, as a special exception, the copyright holders give
+ * permission to link the code of portions of this program with the
+ * OpenSSL library under certain conditions as described in each
+ * individual source file, and distribute linked combinations
+ * including the two.
+ * You must obey the GNU General Public License in all respects
+ * for all of the code used other than OpenSSL.  If you modify
+ * file(s) with this exception, you may extend this exception to your
+ * version of the file(s), but you are not obligated to do so.  If you
+ * do not wish to do so, delete this exception statement from your
+ * version.  If you delete this exception statement from all source
+ * files in the program, then also delete it here.
+ */
+/* copyright --> */
+#ifndef _D_EVENT_H_
+#define _D_EVENT_H_
+
+#include "common.h"
+
+#include <deque>
+#include <algorithm>
+#include <functional>
+
+#include "SharedHandle.h"
+#include "a2netcompat.h"
+#include "Command.h"
+#ifdef ENABLE_ASYNC_DNS
+# include "AsyncNameResolver.h"
+#endif // ENABLE_ASYNC_DNS
+
+namespace aria2 {
+
+template<typename SocketEntry>
+class Event {
+public:
+  virtual ~Event() {}
+
+  virtual void processEvents(int events) = 0;
+
+  virtual int getEvents() const = 0;
+
+  virtual void addSelf(const SharedHandle<SocketEntry>& socketEntry) const = 0;
+
+  virtual void removeSelf
+  (const SharedHandle<SocketEntry>& socketEntry) const = 0;
+};
+
+template<typename SocketEntry, typename EventPoll>
+class CommandEvent : public Event<SocketEntry> {
+private:
+  Command* _command;
+  int _events;
+public:
+  CommandEvent(Command* command, int events):
+    _command(command), _events(events) {}
+
+  Command* getCommand() const
+  {
+    return _command;
+  }
+    
+  void addEvents(int events)
+  {
+    _events |= events;
+  }
+
+  void removeEvents(int events)
+  {
+    _events &= (~events); 
+  }
+
+  bool eventsEmpty() const
+  {
+    return _events == 0;
+  }
+        
+  bool operator==(const CommandEvent& commandEvent) const
+  {
+    return _command == commandEvent._command;
+  }
+
+  virtual int getEvents() const
+  {
+    return _events;
+  }
+
+  virtual void processEvents(int events)
+  {
+    if((_events&events) ||
+       ((EventPoll::IEV_ERROR|EventPoll::IEV_HUP)&events)) {
+      _command->setStatusActive();
+    }
+    if(EventPoll::IEV_READ&events) {
+      _command->readEventReceived();
+    }
+    if(EventPoll::IEV_WRITE&events) {
+      _command->writeEventReceived();
+    }
+    if(EventPoll::IEV_ERROR&events) {
+      _command->errorEventReceived();
+    }
+    if(EventPoll::IEV_HUP&events) {
+      _command->hupEventReceived();
+    }
+  }
+
+  virtual void addSelf(const SharedHandle<SocketEntry>& socketEntry) const
+  {
+    socketEntry->addCommandEvent(*this);
+  }
+
+  virtual void removeSelf(const SharedHandle<SocketEntry>& socketEntry) const
+  {
+    socketEntry->removeCommandEvent(*this);
+  }
+};
+  
+#ifdef ENABLE_ASYNC_DNS
+
+template<typename SocketEntry, typename EventPoll>
+class ADNSEvent : public Event<SocketEntry> {
+private:
+  SharedHandle<AsyncNameResolver> _resolver;
+  Command* _command;
+  sock_t _socket;
+  int _events;
+public:
+  ADNSEvent(const SharedHandle<AsyncNameResolver>& resolver, Command* command,
+            sock_t socket, int events):
+    _resolver(resolver), _command(command), _socket(socket), _events(events) {}
+
+  bool operator==(const ADNSEvent& event) const
+  {
+    return _resolver == event._resolver;
+  }
+    
+  virtual int getEvents() const
+  {
+    return _events;
+  }
+
+  virtual void processEvents(int events)
+  {
+    ares_socket_t readfd;
+    ares_socket_t writefd;
+    if(events&(EventPoll::IEV_READ|EventPoll::IEV_ERROR|
+               EventPoll::IEV_HUP)) {
+      readfd = _socket;
+    } else {
+      readfd = ARES_SOCKET_BAD;
+    }
+    if(events&(EventPoll::IEV_WRITE|EventPoll::IEV_ERROR|
+               EventPoll::IEV_HUP)) {
+      writefd = _socket;
+    } else {
+      writefd = ARES_SOCKET_BAD;
+    }
+    _resolver->process(readfd, writefd);
+    _command->setStatusActive();
+  }
+
+  virtual void addSelf(const SharedHandle<SocketEntry>& socketEntry) const
+  {
+    socketEntry->addADNSEvent(*this);
+  }
+
+  virtual void removeSelf(const SharedHandle<SocketEntry>& socketEntry) const
+  {
+    socketEntry->removeADNSEvent(*this);
+  }
+};
+#else // !ENABLE_ASYNC_DNS
+template<typename SocketEntry, typename EventPoll>
+class ADNSEvent : public Event<SocketEntry> {};
+#endif // !ENABLE_ASYNC_DNS
+
+template<typename CommandEvent, typename ADNSEvent, typename EventRType>
+class SocketEntry {
+protected:
+  sock_t _socket;
+    
+  std::deque<CommandEvent> _commandEvents;
+    
+#ifdef ENABLE_ASYNC_DNS
+    
+  std::deque<ADNSEvent> _adnsEvents;
+
+#endif // ENABLE_ASYNC_DNS
+public:
+  SocketEntry(sock_t socket):_socket(socket) {}
+
+  virtual ~SocketEntry() {}
+
+  bool operator==(const SocketEntry& entry) const
+  {
+    return _socket == entry._socket;
+  }
+
+  bool operator<(const SocketEntry& entry) const
+  {
+    return _socket < entry._socket;
+  }
+
+  void addCommandEvent(const CommandEvent& cev)
+  {
+    typename std::deque<CommandEvent>::iterator i =
+      std::find(_commandEvents.begin(), _commandEvents.end(), cev);
+    if(i == _commandEvents.end()) {
+      _commandEvents.push_back(cev);
+    } else {
+      (*i).addEvents(cev.getEvents());
+    }
+  }
+
+  void removeCommandEvent(const CommandEvent& cev)
+  {
+    typename std::deque<CommandEvent>::iterator i =
+      std::find(_commandEvents.begin(), _commandEvents.end(), cev);
+    if(i == _commandEvents.end()) {
+      // not found
+    } else {
+      (*i).removeEvents(cev.getEvents());
+      if((*i).eventsEmpty()) {
+        _commandEvents.erase(i);
+      }
+    }
+  }
+
+#ifdef ENABLE_ASYNC_DNS
+    
+  void addADNSEvent(const ADNSEvent& aev)
+  {
+    typename std::deque<ADNSEvent>::iterator i =
+      std::find(_adnsEvents.begin(), _adnsEvents.end(), aev);
+    if(i == _adnsEvents.end()) {
+      _adnsEvents.push_back(aev);
+    }
+  }
+
+  void removeADNSEvent(const ADNSEvent& aev)
+  {
+    typename std::deque<ADNSEvent>::iterator i =
+      std::find(_adnsEvents.begin(), _adnsEvents.end(), aev);
+    if(i == _adnsEvents.end()) {
+      // not found
+    } else {
+      _adnsEvents.erase(i);
+    }
+  }
+#endif // ENABLE_ASYNC_DNS
+
+  virtual EventRType getEvents() = 0;
+    
+  sock_t getSocket() const
+  {
+    return _socket;
+  }
+
+  void setSocket(sock_t socket)
+  {
+    _socket = socket;
+  }
+
+  bool eventEmpty() const
+  {
+#ifdef ENABLE_ASYNC_DNS
+    return _commandEvents.empty() && _adnsEvents.empty();
+#else // !ENABLE_ASYNC_DNS
+    return _commandEvents.empty();
+#endif // !ENABLE_ASYNC_DNS)
+  }
+    
+  void processEvents(int events)
+  {
+    std::for_each(_commandEvents.begin(), _commandEvents.end(),
+                  std::bind2nd(std::mem_fun_ref
+                               (&CommandEvent::processEvents),
+                               events));
+#ifdef ENABLE_ASYNC_DNS
+    std::for_each(_adnsEvents.begin(), _adnsEvents.end(),
+                  std::bind2nd(std::mem_fun_ref
+                               (&ADNSEvent::processEvents),
+                               events));
+#endif // ENABLE_ASYNC_DNS
+  }
+};
+
+#ifdef ENABLE_ASYNC_DNS
+
+template<typename EventPoll>
+class AsyncNameResolverEntry {
+private:
+  SharedHandle<AsyncNameResolver> _nameResolver;
+
+  Command* _command;
+
+  size_t _socketsSize;
+  
+  sock_t _sockets[ARES_GETSOCK_MAXNUM];
+
+public:
+  AsyncNameResolverEntry(const SharedHandle<AsyncNameResolver>& nameResolver,
+                         Command* command):
+    _nameResolver(nameResolver), _command(command), _socketsSize(0) {}
+
+  bool operator==(const AsyncNameResolverEntry& entry)
+  {
+    return _nameResolver == entry._nameResolver &&
+      _command == entry._command;
+  }
+
+  void addSocketEvents(EventPoll* e)
+  {
+    _socketsSize = 0;
+    int mask = _nameResolver->getsock(_sockets);
+    if(mask == 0) {
+      return;
+    }
+    size_t i;
+    for(i = 0; i < ARES_GETSOCK_MAXNUM; ++i) {
+      int events = 0;
+      if(ARES_GETSOCK_READABLE(mask, i)) {
+        events |= EventPoll::IEV_READ;
+      }
+      if(ARES_GETSOCK_WRITABLE(mask, i)) {
+        events |= EventPoll::IEV_WRITE;
+      }
+      if(events == 0) {
+        // assume no further sockets are returned.
+        break;
+      }
+      e->addEvents(_sockets[i], _command, events, _nameResolver);
+    }
+    _socketsSize = i;
+  }
+    
+  void removeSocketEvents(EventPoll* e)
+  {
+    for(size_t i = 0; i < _socketsSize; ++i) {
+      e->deleteEvents(_sockets[i], _command, _nameResolver);
+    }
+  }
+
+  // Calls AsyncNameResolver::process(ARES_SOCKET_BAD,
+  // ARES_SOCKET_BAD).
+  void processTimeout()
+  {
+    _nameResolver->process(ARES_SOCKET_BAD, ARES_SOCKET_BAD);
+  }
+};
+#else // !ENABLE_ASYNC_DNS
+template<typename EventPoll>
+class AsyncNameResolverEntry {};
+#endif // !ENABLE_ASYNC_DNS
+
+} // namespace aria2
+
+#endif // _D_EVENT_H_

src/Makefile.am

@@ -201,7 +201,8 @@ SRCS =  Socket.h\
 	wallclock.h\
 	download_helper.cc download_helper.h\
 	MetadataInfo.cc MetadataInfo.h\
-	SessionSerializer.cc SessionSerializer.h
+	SessionSerializer.cc SessionSerializer.h\
+	Event.h
 
 if ENABLE_XML_RPC
 SRCS += XmlRpcRequestParserController.cc XmlRpcRequestParserController.h\

src/Makefile.in

@@ -434,7 +434,7 @@ am__libaria2c_a_SOURCES_DIST = Socket.h SocketCore.cc SocketCore.h \
 	CreateRequestCommand.h DownloadResultCode.h wallclock.h \
 	download_helper.cc download_helper.h MetadataInfo.cc \
 	MetadataInfo.h SessionSerializer.cc SessionSerializer.h \
-	XmlRpcRequestParserController.cc \
+	Event.h XmlRpcRequestParserController.cc \
 	XmlRpcRequestParserController.h \
 	XmlRpcRequestParserStateMachine.cc \
 	XmlRpcRequestParserStateMachine.h XmlRpcRequestParserState.h \
@@ -1204,7 +1204,7 @@ SRCS = Socket.h SocketCore.cc SocketCore.h BinaryStream.h Command.cc \
 	CreateRequestCommand.h DownloadResultCode.h wallclock.h \
 	download_helper.cc download_helper.h MetadataInfo.cc \
 	MetadataInfo.h SessionSerializer.cc SessionSerializer.h \
-	$(am__append_1) $(am__append_2) $(am__append_3) \
+	Event.h $(am__append_1) $(am__append_2) $(am__append_3) \
 	$(am__append_4) $(am__append_5) $(am__append_6) \
 	$(am__append_7) $(am__append_8) $(am__append_9) \
 	$(am__append_10) $(am__append_11) $(am__append_12) \

src/PollEventPoll.cc

@@ -44,253 +44,33 @@
 
 namespace aria2 {
 
-PollEventPoll::CommandEvent::CommandEvent(Command* command, int events):
-  _command(command), _events(events) {}
+PollEventPoll::KSocketEntry::KSocketEntry(sock_t s):
+  SocketEntry<KCommandEvent, KADNSEvent, struct pollfd>(s) {}
 
-int PollEventPoll::CommandEvent::getEvents() const
-{
-  return _events;
-}
-
-void PollEventPoll::CommandEvent::processEvents(int events)
-{
-  if((_events&events) ||
-     ((PollEventPoll::EVENT_ERROR|PollEventPoll::EVENT_HUP)&events)) {
-    _command->setStatusActive();
-  }
-  if(PollEventPoll::EVENT_READ&events) {
-    _command->readEventReceived();
-  }
-  if(PollEventPoll::EVENT_WRITE&events) {
-    _command->writeEventReceived();
-  }
-  if(PollEventPoll::EVENT_ERROR&events) {
-    _command->errorEventReceived();
-  }
-  if(PollEventPoll::EVENT_HUP&events) {
-    _command->hupEventReceived();
-  }
-}
-
-void PollEventPoll::CommandEvent::addSelf
-(const SharedHandle<SocketEntry>& socketEntry) const
-{
-  socketEntry->addCommandEvent(*this);
-}
-
-void PollEventPoll::CommandEvent::removeSelf
-(const SharedHandle<SocketEntry>& socketEntry) const
-{
-  socketEntry->removeCommandEvent(*this);
-}
-
-#ifdef ENABLE_ASYNC_DNS
-
-PollEventPoll::ADNSEvent::ADNSEvent
-(const SharedHandle<AsyncNameResolver>& resolver,
- Command* command,
- sock_t socket, int events):
-  _resolver(resolver), _command(command), _socket(socket), _events(events) {}
-
-int PollEventPoll::ADNSEvent::getEvents() const
-{
-  return _events;
-}
-
-void PollEventPoll::ADNSEvent::processEvents(int events)
-{
-  ares_socket_t readfd;
-  ares_socket_t writefd;
-  if(events&(PollEventPoll::EVENT_READ|PollEventPoll::EVENT_ERROR|
-             PollEventPoll::EVENT_HUP)) {
-    readfd = _socket;
-  } else {
-    readfd = ARES_SOCKET_BAD;
-  }
-  if(events&(PollEventPoll::EVENT_WRITE|PollEventPoll::EVENT_ERROR|
-             PollEventPoll::EVENT_HUP)) {
-    writefd = _socket;
-  } else {
-    writefd = ARES_SOCKET_BAD;
-  }
-  _resolver->process(readfd, writefd);
-  _command->setStatusActive();
-}
-
-void PollEventPoll::ADNSEvent::addSelf
-(const SharedHandle<SocketEntry>& socketEntry) const
-{
-  socketEntry->addADNSEvent(*this);
-}
-
-void PollEventPoll::ADNSEvent::removeSelf
-(const SharedHandle<SocketEntry>& socketEntry) const
-{
-  socketEntry->removeADNSEvent(*this);
-}
-
-#endif // ENABLE_ASYNC_DNS
-
-PollEventPoll::SocketEntry::SocketEntry(sock_t socket):_socket(socket)
-{
-  memset(&_pollEvent, 0, sizeof(struct pollfd));
-}
-
-void PollEventPoll::SocketEntry::addCommandEvent(const CommandEvent& cev)
-{
-  std::deque<CommandEvent>::iterator i = std::find(_commandEvents.begin(),
-                                                   _commandEvents.end(),
-                                                   cev);
-  if(i == _commandEvents.end()) {
-    _commandEvents.push_back(cev);
-  } else {
-    (*i).addEvents(cev.getEvents());
-  }
-}
-
-void PollEventPoll::SocketEntry::removeCommandEvent(const CommandEvent& cev)
-{
-  std::deque<CommandEvent>::iterator i = std::find(_commandEvents.begin(),
-                                                   _commandEvents.end(),
-                                                   cev);
-  if(i == _commandEvents.end()) {
-    // not found
-  } else {
-    (*i).removeEvents(cev.getEvents());
-    if((*i).eventsEmpty()) {
-      _commandEvents.erase(i);
-    }
-  }
-}
-
-#ifdef ENABLE_ASYNC_DNS
-
-void PollEventPoll::SocketEntry::addADNSEvent(const ADNSEvent& aev)
-{
-  std::deque<ADNSEvent>::iterator i = std::find(_adnsEvents.begin(),
-                                                _adnsEvents.end(),
-                                                aev);
-  if(i == _adnsEvents.end()) {
-    _adnsEvents.push_back(aev);
-  }
-}
-
-void PollEventPoll::SocketEntry::removeADNSEvent(const ADNSEvent& aev)
-{
-  std::deque<ADNSEvent>::iterator i = std::find(_adnsEvents.begin(),
-                                                _adnsEvents.end(),
-                                                aev);
-  if(i == _adnsEvents.end()) {
-    // not found
-  } else {
-    _adnsEvents.erase(i);
-  }
-}
-
-#endif // ENABLE_ASYNC_DNS
-
-void PollEventPoll::SocketEntry::processEvents(int events)
-{
-  std::for_each(_commandEvents.begin(), _commandEvents.end(),
-                std::bind2nd(std::mem_fun_ref
-                             (&PollEventPoll::CommandEvent::processEvents),
-                             events));
-#ifdef ENABLE_ASYNC_DNS
-
-  std::for_each(_adnsEvents.begin(), _adnsEvents.end(),
-                std::bind2nd(std::mem_fun_ref
-                             (&PollEventPoll::ADNSEvent::processEvents),
-                             events));
-
-#endif // ENABLE_ASYNC_DNS
-
-}
-
-bool PollEventPoll::SocketEntry::eventEmpty() const
-{
-
-#ifdef ENABLE_ASYNC_DNS
-
-  return _commandEvents.empty() && _adnsEvents.empty();
-
-#else // !ENABLE_ASYNC_DNS
-
-  return _commandEvents.empty();
-
-#endif // !ENABLE_ASYNC_DNS)
-
-}
-
-int accumulateEvent(int events, const PollEventPoll::Event& event)
+int accumulateEvent(int events, const PollEventPoll::KEvent& event)
 {
   return events|event.getEvents();
 }
 
-struct pollfd& PollEventPoll::SocketEntry::getPollEvent()
+struct pollfd PollEventPoll::KSocketEntry::getEvents()
 {
-  _pollEvent.fd = _socket;
+  struct pollfd pollEvent;
+  pollEvent.fd = _socket;
 #ifdef ENABLE_ASYNC_DNS
-  _pollEvent.events =
+  pollEvent.events =
     std::accumulate(_adnsEvents.begin(),
                     _adnsEvents.end(),
                     std::accumulate(_commandEvents.begin(),
                                     _commandEvents.end(), 0, accumulateEvent),
                     accumulateEvent);
 #else // !ENABLE_ASYNC_DNS
-  _pollEvent.events =
+  pollEvent.events =
     std::accumulate(_commandEvents.begin(), _commandEvents.end(), 0,
                     accumulateEvent);
 #endif // !ENABLE_ASYNC_DNS
-  return _pollEvent;
-}
-
-#ifdef ENABLE_ASYNC_DNS
-
-PollEventPoll::AsyncNameResolverEntry::AsyncNameResolverEntry
-(const SharedHandle<AsyncNameResolver>& nameResolver, Command* command):
-  _nameResolver(nameResolver), _command(command), _socketsSize(0)
-
-{}
-
-void PollEventPoll::AsyncNameResolverEntry::addSocketEvents(PollEventPoll* e)
-{
-  _socketsSize = 0;
-  int mask = _nameResolver->getsock(_sockets);
-  if(mask == 0) {
-    return;
-  }
-  size_t i;
-  for(i = 0; i < ARES_GETSOCK_MAXNUM; ++i) {
-    int events = 0;
-    if(ARES_GETSOCK_READABLE(mask, i)) {
-      events |= PollEventPoll::EVENT_READ;
-    }
-    if(ARES_GETSOCK_WRITABLE(mask, i)) {
-      events |= PollEventPoll::EVENT_WRITE;
-    }
-    if(events == 0) {
-      // assume no further sockets are returned.
-      break;
-    }
-    LogFactory::getInstance()->debug("addSocketEvents, %d", _sockets[i]);
-    e->addEvents(_sockets[i], _command, events, _nameResolver);
-  }
-  _socketsSize = i;
+  pollEvent.revents = 0;
+  return pollEvent;
 }
-  
-void PollEventPoll::AsyncNameResolverEntry::removeSocketEvents(PollEventPoll* e)
-{
-  for(size_t i = 0; i < _socketsSize; ++i) {
-    e->deleteEvents(_sockets[i], _command, _nameResolver);
-  }
-}
-
-void PollEventPoll::AsyncNameResolverEntry::processTimeout()
-{
-  _nameResolver->process(ARES_SOCKET_BAD, ARES_SOCKET_BAD);
-}
-
-#endif // ENABLE_ASYNC_DNS
 
 PollEventPoll::PollEventPoll():
   _pollfdCapacity(1024), _pollfdNum(0), _logger(LogFactory::getInstance())
@@ -311,12 +91,12 @@ void PollEventPoll::poll(const struct timeval& tv)
   while((res = ::poll(_pollfds, _pollfdNum, timeout)) == -1 &&
         errno == EINTR);
   if(res > 0) {
-    SharedHandle<SocketEntry> se(new SocketEntry(0));
+    SharedHandle<KSocketEntry> se(new KSocketEntry(0));
     for(struct pollfd* first = _pollfds, *last = _pollfds+_pollfdNum;
         first != last; ++first) {
       if(first->revents) {
         se->setSocket(first->fd);
-        std::deque<SharedHandle<SocketEntry> >::iterator itr =
+        std::deque<SharedHandle<KSocketEntry> >::iterator itr =
           std::lower_bound(_socketEntries.begin(), _socketEntries.end(), se);
         if(itr != _socketEntries.end() && (*itr) == se) {
           (*itr)->processEvents(first->revents);
@@ -334,7 +114,7 @@ void PollEventPoll::poll(const struct timeval& tv)
   // own timeout and ares may create new sockets or closes socket in
   // their API. So we call ares_process_fd for all ares_channel and
   // re-register their sockets.
-  for(std::deque<SharedHandle<AsyncNameResolverEntry> >::iterator i =
+  for(std::deque<SharedHandle<KAsyncNameResolverEntry> >::iterator i =
         _nameResolverEntries.begin(), eoi = _nameResolverEntries.end();
       i != eoi; ++i) {
     (*i)->processTimeout();
@@ -351,32 +131,32 @@ int PollEventPoll::translateEvents(EventPoll::EventType events)
 {
   int newEvents = 0;
   if(EventPoll::EVENT_READ&events) {
-    newEvents |= PollEventPoll::EVENT_READ;
+    newEvents |= IEV_READ;
   }
   if(EventPoll::EVENT_WRITE&events) {
-    newEvents |= PollEventPoll::EVENT_WRITE;
+    newEvents |= IEV_WRITE;
   }
   if(EventPoll::EVENT_ERROR&events) {
-    newEvents |= PollEventPoll::EVENT_ERROR;
+    newEvents |= IEV_ERROR;
   }
   if(EventPoll::EVENT_HUP&events) {
-    newEvents |= PollEventPoll::EVENT_HUP;
+    newEvents |= IEV_HUP;
   }
   return newEvents;
 }
 
 bool PollEventPoll::addEvents
-(sock_t socket, const PollEventPoll::Event& event)
+(sock_t socket, const PollEventPoll::KEvent& event)
 {
-  SharedHandle<SocketEntry> socketEntry(new SocketEntry(socket));
-  std::deque<SharedHandle<SocketEntry> >::iterator i =
+  SharedHandle<KSocketEntry> socketEntry(new KSocketEntry(socket));
+  std::deque<SharedHandle<KSocketEntry> >::iterator i =
     std::lower_bound(_socketEntries.begin(), _socketEntries.end(), socketEntry);
   if(i != _socketEntries.end() && (*i) == socketEntry) {
     event.addSelf(*i);
     for(struct pollfd* first = _pollfds, *last = _pollfds+_pollfdNum;
         first != last; ++first) {
       if(first->fd == socket) {
-        *first = (*i)->getPollEvent();
+        *first = (*i)->getEvents();
         break;
       }
     }
@@ -390,7 +170,7 @@ bool PollEventPoll::addEvents
       delete [] _pollfds;
       _pollfds = newPollfds;
     }
-    _pollfds[_pollfdNum] = socketEntry->getPollEvent();
+    _pollfds[_pollfdNum] = socketEntry->getEvents();
     ++_pollfdNum;
   }
   return true;
@@ -400,7 +180,7 @@ bool PollEventPoll::addEvents
 (sock_t socket, Command* command, EventPoll::EventType events)
 {
   int pollEvents = translateEvents(events);
-  return addEvents(socket, CommandEvent(command, pollEvents));
+  return addEvents(socket, KCommandEvent(command, pollEvents));
 }
 
 #ifdef ENABLE_ASYNC_DNS
@@ -408,15 +188,15 @@ bool PollEventPoll::addEvents
 (sock_t socket, Command* command, int events,
  const SharedHandle<AsyncNameResolver>& rs)
 {
-  return addEvents(socket, ADNSEvent(rs, command, socket, events));
+  return addEvents(socket, KADNSEvent(rs, command, socket, events));
 }
 #endif // ENABLE_ASYNC_DNS
 
 bool PollEventPoll::deleteEvents
-(sock_t socket, const PollEventPoll::Event& event)
+(sock_t socket, const PollEventPoll::KEvent& event)
 {
-  SharedHandle<SocketEntry> socketEntry(new SocketEntry(socket));
-  std::deque<SharedHandle<SocketEntry> >::iterator i =
+  SharedHandle<KSocketEntry> socketEntry(new KSocketEntry(socket));
+  std::deque<SharedHandle<KSocketEntry> >::iterator i =
     std::lower_bound(_socketEntries.begin(), _socketEntries.end(), socketEntry);
   if(i != _socketEntries.end() && (*i) == socketEntry) {
     event.removeSelf(*i);
@@ -430,7 +210,7 @@ bool PollEventPoll::deleteEvents
           --_pollfdNum;
           _socketEntries.erase(i);
         } else {
-          *first = (*i)->getPollEvent();
+          *first = (*i)->getEvents();
         }
         break;
       }
@@ -448,7 +228,7 @@ bool PollEventPoll::deleteEvents
 bool PollEventPoll::deleteEvents
 (sock_t socket, Command* command, const SharedHandle<AsyncNameResolver>& rs)
 {
-  return deleteEvents(socket, ADNSEvent(rs, command, socket, 0));
+  return deleteEvents(socket, KADNSEvent(rs, command, socket, 0));
 }
 #endif // ENABLE_ASYNC_DNS
 
@@ -456,16 +236,16 @@ bool PollEventPoll::deleteEvents
 (sock_t socket, Command* command, EventPoll::EventType events)
 {
   int pollEvents = translateEvents(events);
-  return deleteEvents(socket, CommandEvent(command, pollEvents));
+  return deleteEvents(socket, KCommandEvent(command, pollEvents));
 }
 
 #ifdef ENABLE_ASYNC_DNS
 bool PollEventPoll::addNameResolver
 (const SharedHandle<AsyncNameResolver>& resolver, Command* command)
 {
-  SharedHandle<AsyncNameResolverEntry> entry
-    (new AsyncNameResolverEntry(resolver, command));
-  std::deque<SharedHandle<AsyncNameResolverEntry> >::iterator itr =
+  SharedHandle<KAsyncNameResolverEntry> entry
+    (new KAsyncNameResolverEntry(resolver, command));
+  std::deque<SharedHandle<KAsyncNameResolverEntry> >::iterator itr =
     std::find(_nameResolverEntries.begin(), _nameResolverEntries.end(), entry);
   if(itr == _nameResolverEntries.end()) {
     _nameResolverEntries.push_back(entry);
@@ -479,9 +259,9 @@ bool PollEventPoll::addNameResolver
 bool PollEventPoll::deleteNameResolver
 (const SharedHandle<AsyncNameResolver>& resolver, Command* command)
 {
-  SharedHandle<AsyncNameResolverEntry> entry
-    (new AsyncNameResolverEntry(resolver, command));
-  std::deque<SharedHandle<AsyncNameResolverEntry> >::iterator itr =
+  SharedHandle<KAsyncNameResolverEntry> entry
+    (new KAsyncNameResolverEntry(resolver, command));
+  std::deque<SharedHandle<KAsyncNameResolverEntry> >::iterator itr =
     std::find(_nameResolverEntries.begin(), _nameResolverEntries.end(), entry);
   if(itr == _nameResolverEntries.end()) {
     return false;

src/PollEventPoll.h

@@ -41,6 +41,7 @@
 
 #include <deque>
 
+#include "Event.h"
 #ifdef ENABLE_ASYNC_DNS
 # include "AsyncNameResolver.h"
 #endif // ENABLE_ASYNC_DNS
@@ -50,195 +51,29 @@ namespace aria2 {
 class Logger;
 
 class PollEventPoll : public EventPoll {
-
 private:
+  class KSocketEntry;
 
-  class SocketEntry;
-
-  class Event {
-  public:
-    virtual ~Event() {}
-
-    virtual void processEvents(int events) = 0;
-
-    virtual int getEvents() const = 0;
-
-    virtual void addSelf(const SharedHandle<SocketEntry>& socketEntry) const =0;
-
-    virtual void removeSelf
-    (const SharedHandle<SocketEntry>& socketEntry) const =0;
-  };
-
-  friend int accumulateEvent(int events, const Event& event);
-
-  class CommandEvent : public Event {
-  private:
-    Command* _command;
-    int _events;
-  public:
-    CommandEvent(Command* command, int events);
-    
-    Command* getCommand() const
-    {
-      return _command;
-    }
-    
-    void addEvents(int events)
-    {
-      _events |= events;
-    }
-
-    void removeEvents(int events)
-    {
-      _events &= (~events); 
-    }
-
-    bool eventsEmpty() const
-    {
-      return _events == 0;
-    }
-        
-    bool operator==(const CommandEvent& commandEvent) const
-    {
-      return _command == commandEvent._command;
-    }
-
-    virtual int getEvents() const;
-    
-    virtual void processEvents(int events);
-
-    virtual void addSelf(const SharedHandle<SocketEntry>& socketEntry) const;
-
-    virtual void removeSelf(const SharedHandle<SocketEntry>& socketEntry) const;
-  };
-  
-#ifdef ENABLE_ASYNC_DNS
-
-  class ADNSEvent : public Event {
-  private:
-    SharedHandle<AsyncNameResolver> _resolver;
-    Command* _command;
-    sock_t _socket;
-    int _events;
-  public:
-    ADNSEvent(const SharedHandle<AsyncNameResolver>& resolver, Command* command,
-              sock_t socket, int events);
-    
-    bool operator==(const ADNSEvent& event) const
-    {
-      return _resolver == event._resolver;
-    }
-    
-    virtual int getEvents() const;
-
-    virtual void processEvents(int events);
-
-    virtual void addSelf(const SharedHandle<SocketEntry>& socketEntry) const;
-
-    virtual void removeSelf(const SharedHandle<SocketEntry>& socketEntry) const;
-  };
-
-#endif // ENABLE_ASYNC_DNS
-
-  class SocketEntry {
-  private:
-    sock_t _socket;
-    
-    std::deque<CommandEvent> _commandEvents;
-    
-#ifdef ENABLE_ASYNC_DNS
-    
-    std::deque<ADNSEvent> _adnsEvents;
-
-#endif // ENABLE_ASYNC_DNS
-
-    struct pollfd _pollEvent;
+  typedef Event<KSocketEntry> KEvent;
+  typedef CommandEvent<KSocketEntry, PollEventPoll> KCommandEvent;
+  typedef ADNSEvent<KSocketEntry, PollEventPoll> KADNSEvent;
+  typedef AsyncNameResolverEntry<PollEventPoll> KAsyncNameResolverEntry;
+  friend class AsyncNameResolverEntry<PollEventPoll>;
 
+  class KSocketEntry:
+    public SocketEntry<KCommandEvent, KADNSEvent, struct pollfd> {
   public:
-    SocketEntry(sock_t socket);
-
-    bool operator==(const SocketEntry& entry) const
-    {
-      return _socket == entry._socket;
-    }
-
-    bool operator<(const SocketEntry& entry) const
-    {
-      return _socket < entry._socket;
-    }
-
-    void addCommandEvent(const CommandEvent& cev);
-
-    void removeCommandEvent(const CommandEvent& cev);
-
-#ifdef ENABLE_ASYNC_DNS
-    
-    void addADNSEvent(const ADNSEvent& aev);
-    
-    void removeADNSEvent(const ADNSEvent& aev);
-
-#endif // ENABLE_ASYNC_DNS
-
-    struct pollfd& getPollEvent();
-    
-    sock_t getSocket() const
-    {
-      return _socket;
-    }
-
-    void setSocket(sock_t socket)
-    {
-      _socket = socket;
-    }
+    KSocketEntry(sock_t socket);
 
-    bool eventEmpty() const;
-    
-    void processEvents(int events);
+    virtual struct pollfd getEvents();
   };
 
-#ifdef ENABLE_ASYNC_DNS
-
-  class AsyncNameResolverEntry {
-  private:
-    SharedHandle<AsyncNameResolver> _nameResolver;
-
-    Command* _command;
-
-    size_t _socketsSize;
-  
-    sock_t _sockets[ARES_GETSOCK_MAXNUM];
-
-  public:
-    AsyncNameResolverEntry(const SharedHandle<AsyncNameResolver>& nameResolver,
-                           Command* command);
-
-    bool operator==(const AsyncNameResolverEntry& entry)
-    {
-      return _nameResolver == entry._nameResolver &&
-        _command == entry._command;
-    }
+  friend int accumulateEvent(int events, const KEvent& event);
 
-    void addSocketEvents(PollEventPoll* socketPoll);
-    
-    void removeSocketEvents(PollEventPoll* socketPoll);
-
-    // Calls AsyncNameResolver::process(ARES_SOCKET_BAD,
-    // ARES_SOCKET_BAD).
-    void processTimeout();
-  };
-
-#endif // ENABLE_ASYNC_DNS
 private:
-  enum PollEventType {
-    EVENT_READ = POLLIN,
-    EVENT_WRITE = POLLOUT,
-    EVENT_ERROR = POLLERR,
-    EVENT_HUP = POLLHUP,
-  };
-
-  std::deque<SharedHandle<SocketEntry> > _socketEntries;
+  std::deque<SharedHandle<KSocketEntry> > _socketEntries;
 #ifdef ENABLE_ASYNC_DNS
-  std::deque<SharedHandle<AsyncNameResolverEntry> > _nameResolverEntries;
+  std::deque<SharedHandle<KAsyncNameResolverEntry> > _nameResolverEntries;
 #endif // ENABLE_ASYNC_DNS
 
   // Allocated the number of struct pollfd in _pollfds.
@@ -251,9 +86,9 @@ private:
 
   Logger* _logger;
 
-  bool addEvents(sock_t socket, const Event& event);
+  bool addEvents(sock_t socket, const KEvent& event);
 
-  bool deleteEvents(sock_t socket, const Event& event);
+  bool deleteEvents(sock_t socket, const KEvent& event);
 
   bool addEvents(sock_t socket, Command* command, int events,
                  const SharedHandle<AsyncNameResolver>& rs);
@@ -282,6 +117,10 @@ public:
   (const SharedHandle<AsyncNameResolver>& resolver, Command* command);
 #endif // ENABLE_ASYNC_DNS
 
+  static const int IEV_READ = POLLIN;
+  static const int IEV_WRITE = POLLOUT;
+  static const int IEV_ERROR = POLLERR;
+  static const int IEV_HUP = POLLHUP;
 };
 
 } // namespace aria2