int SocketUtil::getRecvBuffer(ZL_SOCKET fd)
{
socklen_t buff_szie = sizeof(socklen_t);
int optname = 0;
int ret = ZL_GETSOCKOPT(fd, SOL_SOCKET, SO_RCVBUF, &optname, &buff_szie);
ZL_UNUSED(ret);
assert(ret != -1);
return optname > 0 ? optname : 0;
}
bool PollPoller::removeChannel(Channel *channel)
{
if(!hasChannel(channel))
return true;
ZL_SOCKET fd = channel->fd();
int idx = channelIter_[channel];
LOG_INFO("PollPoller::removeChannel [%d][%d][%0x]", fd, idx, channel);
assert(getChannel(fd) == channel && "the remove socket must be already exist");
assert(channel->isNoneEvent());
assert(0 <= idx && idx < static_cast<int>(pollfds_.size()));
const struct pollfd& pfd = pollfds_[idx];
ZL_UNUSED(pfd);
assert(pfd.fd == -channel->fd()-1 && pfd.events == channel->events());
size_t n = channelMap_.erase(fd);
ZL_UNUSED(n);
assert(n == 1);
if ((idx) == static_cast<int>(pollfds_.size()) - 1) // last one
{
}
else
{
int lastfd = pollfds_.back().fd;
iter_swap(pollfds_.begin()+idx, pollfds_.end()-1);
if (lastfd < 0)
{
lastfd = -lastfd-1;
}
channelIter_[getChannel(lastfd)] = idx;
}
pollfds_.pop_back();
channelIter_.erase(channel);
return true;
}
bool EpollPoller::removeChannel(Channel *channel)
{
if(!hasChannel(channel)) // 注意 updateChannel 函数中也有一处removeChannel的逻辑
return true;
ZL_SOCKET fd = channel->fd();
LOG_INFO("EpollPoller::removeChannel [%d][%0x]", fd, channel);
assert(hasChannel(channel) && "the remove socket must be already exist");
assert(getChannel(fd) == channel && "the remove socket must be already exist");
assert(channel->isNoneEvent());
size_t n = channelMap_.erase(fd);
ZL_UNUSED(n);
assert(n == 1);
return update(channel, EPOLL_CTL_DEL);
}
