fix(event):1.8.8 解决单独监听kHupEvent事件，没有响应的问题

Author: hevake

modules/event/engines/epoll/fd_event.cpp

@@ -78,6 +78,9 @@ bool EpollFdEvent::enable()
     if (events_ & kExceptEvent)
         ++d_->except_event_num;
 
+    if (events_ & kHupEvent)
+        ++d_->hup_event_num;
+
     d_->fd_events.push_back(this);
 
     reloadEpoll();
@@ -100,6 +103,9 @@ bool EpollFdEvent::disable()
     if (events_ & kExceptEvent)
         --d_->except_event_num;
 
+    if (events_ & kHupEvent)
+        --d_->hup_event_num;
+
     auto iter = std::find(d_->fd_events.begin(), d_->fd_events.end(), this);
     d_->fd_events.erase(iter);
 
@@ -129,6 +135,9 @@ void EpollFdEvent::reloadEpoll()
     if (d_->except_event_num > 0)
         new_events |= EPOLLERR;
 
+    if (d_->hup_event_num > 0)
+        new_events |= EPOLLHUP;
+
     d_->ev.events = new_events;
 
     if (old_events == 0) {

modules/event/engines/epoll/types.h

@@ -37,6 +37,7 @@ struct EpollFdSharedData {
     int read_event_num = 0;     //!< 监听可读事件的FdEvent个数
     int write_event_num = 0;    //!< 监听可写事件的FdEvent个数
     int except_event_num = 0;   //!< 监听异常事件的FdEvent个数
+    int hup_event_num = 0;      //!< 监听挂起事件的FdEvent个数
 
     std::vector<EpollFdEvent*> fd_events;
 };

version.mk

@@ -1,4 +1,4 @@
 # TBOX版本号
 TBOX_VERSION_MAJOR := 1
 TBOX_VERSION_MINOR := 8
-TBOX_VERSION_REVISION := 7
+TBOX_VERSION_REVISION := 8