bool SocketEngine::AddFd(EventHandler* eh, int event_mask)
{
int fd = eh->GetFd();
if ((fd < 0) || (fd > GetMaxFds() - 1))
{
ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "AddFd out of range: (fd: %d, max: %d)", fd, GetMaxFds());
return false;
}
if (static_cast<unsigned int>(fd) < fd_mappings.size() && fd_mappings[fd] != -1)
{
ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "Attempt to add duplicate fd: %d", fd);
return false;
}
unsigned int index = CurrentSetSize;
if (!SocketEngine::AddFdRef(eh))
{
ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "Attempt to add duplicate fd: %d", fd);
return false;
}
while (static_cast<unsigned int>(fd) >= fd_mappings.size())
fd_mappings.resize(fd_mappings.size() * 2, -1);
fd_mappings[fd] = index;
ResizeDouble(events);
events[index].fd = fd;
events[index].events = mask_to_poll(event_mask);
ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "New file descriptor: %d (%d; index %d)", fd, events[index].events, index);
eh->SetEventMask(event_mask);
return true;
}
bool PollEngine::AddFd(EventHandler* eh, int event_mask)
{
int fd = eh->GetFd();
if ((fd < 0) || (fd > GetMaxFds() - 1))
{
ServerInstance->Logs->Log("SOCKET",DEBUG,"AddFd out of range: (fd: %d, max: %d)", fd, GetMaxFds());
return false;
}
if (fd_mappings.find(fd) != fd_mappings.end())
{
ServerInstance->Logs->Log("SOCKET",DEBUG,"Attempt to add duplicate fd: %d", fd);
return false;
}
unsigned int index = CurrentSetSize;
fd_mappings[fd] = index;
ref[index] = eh;
events[index].fd = fd;
events[index].events = mask_to_poll(event_mask);
ServerInstance->Logs->Log("SOCKET", DEBUG,"New file descriptor: %d (%d; index %d)", fd, events[index].events, index);
SocketEngine::SetEventMask(eh, event_mask);
CurrentSetSize++;
return true;
}
int PollEngine::DispatchEvents()
{
int i = poll(events, CurrentSetSize, 1000);
int index;
socklen_t codesize = sizeof(int);
int errcode;
int processed = 0;
ServerInstance->UpdateTime();
if (i > 0)
{
for (index = 0; index < CurrentSetSize && processed != i; index++)
{
if (events[index].revents)
processed++;
EventHandler* eh = ref[index];
if (!eh)
continue;
if (events[index].revents & POLLHUP)
{
eh->HandleEvent(EVENT_ERROR, 0);
continue;
}
if (events[index].revents & POLLERR)
{
// Get fd
int fd = events[index].fd;
// Get error number
if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &errcode, &codesize) < 0)
errcode = errno;
eh->HandleEvent(EVENT_ERROR, errcode);
continue;
}
if (events[index].revents & POLLIN)
{
SetEventMask(eh, eh->GetEventMask() & ~FD_READ_WILL_BLOCK);
eh->HandleEvent(EVENT_READ);
if (eh != ref[index])
// whoops, deleted out from under us
continue;
}
if (events[index].revents & POLLOUT)
{
int mask = eh->GetEventMask();
mask &= ~(FD_WRITE_WILL_BLOCK | FD_WANT_SINGLE_WRITE);
SetEventMask(eh, mask);
events[index].events = mask_to_poll(mask);
eh->HandleEvent(EVENT_WRITE);
}
}
}
return i;
}
void SocketEngine::OnSetEvent(EventHandler* eh, int old_mask, int new_mask)
{
int fd = eh->GetFd();
if (fd < 0 || static_cast<unsigned int>(fd) >= fd_mappings.size() || fd_mappings[fd] == -1)
{
ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "SetEvents() on unknown fd: %d", eh->GetFd());
return;
}
events[fd_mappings[fd]].events = mask_to_poll(new_mask);
}
void PollEngine::OnSetEvent(EventHandler* eh, int old_mask, int new_mask)
{
std::map<int, unsigned int>::iterator it = fd_mappings.find(eh->GetFd());
if (it == fd_mappings.end())
{
ServerInstance->Logs->Log("SOCKET",DEBUG,"SetEvents() on unknown fd: %d", eh->GetFd());
return;
}
events[it->second].events = mask_to_poll(new_mask);
}
int SocketEngine::DispatchEvents()
{
int i = poll(&events[0], CurrentSetSize, 1000);
int processed = 0;
ServerInstance->UpdateTime();
for (int index = 0; index < CurrentSetSize && processed < i; index++)
{
struct pollfd& pfd = events[index];
// Copy these in case the vector gets resized and pfd invalidated
const int fd = pfd.fd;
const short revents = pfd.revents;
if (revents)
processed++;
EventHandler* eh = GetRef(fd);
if (!eh)
continue;
if (revents & POLLHUP)
{
eh->HandleEvent(EVENT_ERROR, 0);
continue;
}
if (revents & POLLERR)
{
// Get error number
socklen_t codesize = sizeof(int);
int errcode;
if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &errcode, &codesize) < 0)
errcode = errno;
eh->HandleEvent(EVENT_ERROR, errcode);
continue;
}
if (revents & POLLIN)
{
eh->SetEventMask(eh->GetEventMask() & ~FD_READ_WILL_BLOCK);
eh->HandleEvent(EVENT_READ);
if (eh != GetRef(fd))
// whoops, deleted out from under us
continue;
}
if (revents & POLLOUT)
{
int mask = eh->GetEventMask();
mask &= ~(FD_WRITE_WILL_BLOCK | FD_WANT_SINGLE_WRITE);
eh->SetEventMask(mask);
// The vector could've been resized, reference can be invalid by now; don't use it
events[index].events = mask_to_poll(mask);
eh->HandleEvent(EVENT_WRITE);
}
}
return i;
}
