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Copy pathcf_epoll.cpp
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executable file
·220 lines (207 loc) · 6.35 KB
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/*
* Copyright 2013, Jeffery Qiu. All rights reserved.
*
* Licensed under the GNU LESSER GENERAL PUBLIC LICENSE(the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.gnu.org/licenses/lgpl.html
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//// Author: Jeffery Qiu (dungeonsnd at gmail dot com)
////
#include "cppfoundation/cf_epoll.hpp"
namespace cf
{
Epoll::Epoll(const TYPE_SETLISTENFDS & listenfds ,cf_int maxEvents)
:_listenfds(listenfds),_maxEvents(maxEvents)
{
_epfd =cf_epoll_create(epolldefs::SIZE_CREATE);
for(TYPE_SETLISTENFDS::iterator it=_listenfds.begin();
it!=_listenfds.end(); it++)
AddConn(*it,networkdefs::CFEV_READ);
// EpollCtl(_pipe[0],EPOLL_CTL_ADD, EPOLLIN);
if(_maxEvents<1)
_THROW_FMT(ValueError, "_maxEvents{%d}<1 !",_maxEvents);
_retEvents.resize(_maxEvents);
}
Epoll::~Epoll()
{
}
cf_void Epoll::AddConn(cf_fd fd,networkdefs::EV_TYPE ev)
{
CF_PRINT_FUNC;
cf_ev event =EPOLLRDHUP;
if(ev&networkdefs::CFEV_READ)
event |= EPOLLIN;
if(ev&networkdefs::CFEV_WRITE)
event |= EPOLLOUT;
EpollCtl(fd,EPOLL_CTL_ADD, event);
_mapEvent.insert(std::make_pair(fd,event));
}
cf_void Epoll::DelConn(cf_fd fd)
{
CF_PRINT_FUNC;
EpollCtl(fd,EPOLL_CTL_DEL, 0);
_mapEvent.erase(fd);
}
cf_void Epoll::AddEvent(cf_fd fd,networkdefs::EV_TYPE ev)
{
CF_PRINT_FUNC;
cf_ev event =0;
if(ev&networkdefs::CFEV_READ)
event |= EPOLLIN;
if(ev&networkdefs::CFEV_WRITE)
event |= EPOLLOUT;
TYPE_MAPEVENT_ITER it =_mapEvent.find(fd);
if(_mapEvent.end()!=it)
{
cf_ev oldev =it->second;
if(oldev&event)
{
#if CFD_SWITCH_PRINT
fprintf (stderr, "AddEvent , already has,oldev=%x,event=%x \n",oldev,event);
#endif
}
else
{
EpollCtl(fd,EPOLL_CTL_MOD, oldev|event);
it->second =oldev|event;
}
}
else
{
}
}
cf_void Epoll::DelEvent(cf_fd fd,networkdefs::EV_TYPE ev)
{
CF_PRINT_FUNC;
cf_ev event =0;
if(ev&networkdefs::CFEV_READ)
event |= EPOLLIN;
if(ev&networkdefs::CFEV_WRITE)
event |= EPOLLOUT;
TYPE_MAPEVENT_ITER it =_mapEvent.find(fd);
if(_mapEvent.end()!=it)
{
cf_ev oldev =it->second;
if(oldev&event)
{
EpollCtl(fd,EPOLL_CTL_MOD, oldev&(~event));
it->second =oldev&(~event);
}
else
{
#if CFD_SWITCH_PRINT
fprintf (stderr, "AddEvent , already deled,oldev=%x,event=%x \n",oldev,event);
#endif
}
}
else
{
}
}
cf_void Epoll::WaitEvent(TYPE_VECEVENT & vecEvent, cf_int timeoutMilliseconds)
{
CF_PRINT_FUNC;
_retEvents.clear();
cf_int n =cf_epoll_wait(_epfd, &(_retEvents[0]),_maxEvents,
timeoutMilliseconds);
#if _DEBUG
// usleep(100*1000); // only for testing
#endif
#if CFD_SWITCH_PRINT
fprintf (stderr, "epoll_wait return , n=%d ,pid=%d \n",n,cf_int(getpid()));
#endif
if(-1==n)
{
_THROW(SyscallExecuteError, "Failed to execute epoll_wait !");
}
else if(0==n)
{
#if CFD_SWITCH_PRINT
fprintf (stderr, "epoll_wait return , time out \n");
#endif
}
else
{
for(cf_int i=0; i<n; i++)
{
if( _listenfds.find(_retEvents[i].data.fd)!=_listenfds.end() )
{
#if CFD_SWITCH_PRINT
fprintf (stderr, "epoll_wait return , CFEV_ACCEPT\n");
#endif
vecEvent.push_back( std::make_pair(_retEvents[i].data.fd,
networkdefs::CFEV_ACCEPT) );
continue;
}
else if((_retEvents[i].events & EPOLLERR)||(_retEvents[i].events & EPOLLHUP))
{
#if CFD_SWITCH_PRINT
fprintf (stderr, "epoll_wait return , EPOLLERR or EPOLLHUP\n");
#endif
vecEvent.push_back( std::make_pair(_retEvents[i].data.fd,
networkdefs::CFEV_ERROR) );
continue;
}
/*
else if(_retEvents[i].data.fd==_pipe[1])
{
#if CFD_SWITCH_PRINT
fprintf (stderr, "epoll_wait return , rewait after epoll_ctl\n");
#endif
ssize_t rdn =cf::read(_pipe[1],_buf4pipe,sizeof _buf4pipe);
if(sizeof _buf4pipe!=rdn)
_THROW_FMT(ValueError, "sizeof _buf4pipe{%lld}!=rdn{%lld} !",(cf_int64)(sizeof _buf4pipe),(cf_int64)rdn);
continue;
}
*/
if(_retEvents[i].events & EPOLLIN)
{
#if CFD_SWITCH_PRINT
fprintf (stderr, "epoll_wait return , EPOLLIN\n");
#endif
vecEvent.push_back( std::make_pair(_retEvents[i].data.fd,
networkdefs::CFEV_READ) );
}
if(_retEvents[i].events & EPOLLOUT)
{
#if CFD_SWITCH_PRINT
fprintf (stderr, "epoll_wait return , CFEV_WRITE\n");
#endif
vecEvent.push_back( std::make_pair(_retEvents[i].data.fd,
networkdefs::CFEV_WRITE) );
}
if(_retEvents[i].events & EPOLLRDHUP)
{
#if CFD_SWITCH_PRINT
fprintf (stderr, "epoll_wait return , EPOLLRDHUP\n");
#endif
vecEvent.push_back( std::make_pair(_retEvents[i].data.fd,
networkdefs::CFEV_CLOSE) );
}
}
}
}
cf_void Epoll::EpollCtl(cf_fd fd,cf_int op, cf_ev event)
{
CF_PRINT_FUNC;
epoll_event st_ev;
memset(&st_ev,0,sizeof(epoll_event));
st_ev.events =event;
st_ev.data.fd =fd;
cf_int rt =cf_epoll_ctl(_epfd, op, fd, &st_ev);
if(0!=rt)
{
}
#if CFD_SWITCH_PRINT
fprintf (stderr, "cf_epoll_ctl return %d, _epfd=%d, fd=%d \n" , rt,_epfd,fd);
#endif
}
} // namespace cf