Timestamp EPoll::poll(int timeoutMs, ChannelList* activeChannels)
{
std::cout<<"poll "<<epollfd_<<" "<<events_.size()<<std::endl;
int numEvents = ::epoll_wait(epollfd_,
&events_[0],
static_cast<int>(events_.size()),
timeoutMs);
Timestamp now = Now();
int savedErrno = errno;
if (numEvents > 0)
{
fillActiveChannels(numEvents, activeChannels,now);
}
else if (numEvents == 0)
{
std::cout<<"nothing happended";
}
else
{
// error happens, log uncommon ones
if (savedErrno != EINTR)//非timeout
{
errno = savedErrno;
std::cout <<"EPoll::poll" <<strerror(errno)<<std::endl;
}
}
return now;
}
TimeStamp EPoller::Poll(int nTimeoutMs, ChannelList* pActiveChannels) {
int nNumEvents = epoll_wait(m_nEpollFd
, &*m_vEvents.begin()
, static_cast<int>(m_vEvents.size())
, nTimeoutMs);
TimeStamp now(TimeStamp::Now());
if (nNumEvents > 0) {
LOG_TRACE << nNumEvents << " events happends";
fillActiveChannels(nNumEvents, pActiveChannels);
if (static_cast<size_t>(nNumEvents) == m_vEvents.size()) {
m_vEvents.resize(2 * m_vEvents.size());
}
} else if (0 == nNumEvents) {
LOG_TRACE << "no event";
} else {
LOG_SYSERR << "epoll wait err";
}
return now;
}
