Assert fd >= 0 in updateChannel(). (an-tao#181)

Author: hwc0919

trantor/net/inner/poller/EpollPoller.cc

@@ -135,6 +135,8 @@ void EpollPoller::fillActiveChannels(int numEvents,
 void EpollPoller::updateChannel(Channel *channel)
 {
     assertInLoopThread();
+    assert(channel->fd() >= 0);
+
     const int index = channel->index();
     // LOG_TRACE << "fd = " << channel->fd()
     //  << " events = " << channel->events() << " index = " << index;

trantor/net/inner/poller/KQueue.cc

@@ -111,6 +111,8 @@ void KQueue::fillActiveChannels(int numEvents,
 void KQueue::updateChannel(Channel *channel)
 {
     assertInLoopThread();
+    assert(channel->fd() >= 0);
+
     const int index = channel->index();
     // LOG_TRACE << "fd = " << channel->fd()
     //           << " events = " << channel->events() << " index = " << index;

trantor/net/inner/poller/PollPoller.cc

@@ -89,6 +89,8 @@ void PollPoller::fillActiveChannels(int numEvents,
 void PollPoller::updateChannel(Channel* channel)
 {
     Poller::assertInLoopThread();
+    assert(channel->fd() >= 0);
+
     // LOG_TRACE << "fd = " << channel->fd() << " events = " <<
     // channel->events();
     if (channel->index() < 0)