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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2009 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_SELECT_EVENT_POLL_H
#define D_SELECT_EVENT_POLL_H
#include "EventPoll.h"
#include <deque>
#include <set>
#include "a2functional.h"
#ifdef ENABLE_ASYNC_DNS
# include "AsyncNameResolver.h"
#endif // ENABLE_ASYNC_DNS
namespace aria2 {
class SelectEventPoll : public EventPoll {
private:
class CommandEvent {
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_;
}
int getEvents() const
{
return events_;
}
void processEvents(int events);
};
friend int accumulateEvent
(int events, const SelectEventPoll::CommandEvent& event);
class SocketEntry {
private:
sock_t socket_;
std::deque<CommandEvent> commandEvents_;
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(Command* command, int events);
void removeCommandEvent(Command* command, int events);
int getEvents();
sock_t getSocket() const
{
return socket_;
}
bool eventEmpty() const
{
return commandEvents_.empty();
}
void processEvents(int events);
};
#ifdef ENABLE_ASYNC_DNS
class AsyncNameResolverEntry {
private:
SharedHandle<AsyncNameResolver> nameResolver_;
Command* command_;
public:
AsyncNameResolverEntry(const SharedHandle<AsyncNameResolver>& nameResolver,
Command* command);
bool operator==(const AsyncNameResolverEntry& entry)
{
return *nameResolver_ == *entry.nameResolver_ &&
command_ == entry.command_;
}
bool operator<(const AsyncNameResolverEntry& entry)
{
return nameResolver_.get() < entry.nameResolver_.get() ||
(nameResolver_.get() == entry.nameResolver_.get() &&
command_ < entry.command_);
}
int getFds(fd_set* rfdsPtr, fd_set* wfdsPtr);
void process(fd_set* rfdsPtr, fd_set* wfdsPtr);
};
#endif // ENABLE_ASYNC_DNS
fd_set rfdset_;
fd_set wfdset_;
sock_t fdmax_;
typedef std::set<SharedHandle<SocketEntry>,
DerefLess<SharedHandle<SocketEntry> > > SocketEntrySet;
SocketEntrySet socketEntries_;
#ifdef ENABLE_ASYNC_DNS
typedef std::set<SharedHandle<AsyncNameResolverEntry>,
DerefLess<SharedHandle<AsyncNameResolverEntry> > >
AsyncNameResolverEntrySet;
AsyncNameResolverEntrySet nameResolverEntries_;
#endif // ENABLE_ASYNC_DNS
#ifdef __MINGW32__
// Winsock select() doesn't work if no socket is in FD_SET. We add
// this dummy socket to work around this problem
sock_t dummySocket_;
#endif // __MINGW32__
void updateFdSet();
public:
SelectEventPoll();
virtual ~SelectEventPoll();
virtual void poll(const struct timeval& tv);
virtual bool addEvents(sock_t socket,
Command* command, EventPoll::EventType events);
virtual bool deleteEvents(sock_t socket,
Command* command, EventPoll::EventType events);
#ifdef ENABLE_ASYNC_DNS
virtual bool addNameResolver(const SharedHandle<AsyncNameResolver>& resolver,
Command* command);
virtual bool deleteNameResolver
(const SharedHandle<AsyncNameResolver>& resolver, Command* command);
#endif // ENABLE_ASYNC_DNS
};
} // namespace aria2
#endif // D_SELECT_EVENT_POLL_H
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