From 918c43bfae3926f37efd10368e1e66c166b55818 Mon Sep 17 00:00:00 2001
From: blashyrkh <blashyrkh@inbox.ru>
Date: Sun, 12 Feb 2017 01:13:14 +0300
Subject: [PATCH] Fixed hangup in Dispatcher::yield() in Linux

It might enter into an infinite loop if epoll_wait begins to return
EPOLLERR|EPOLLHUP event mask.
---
 src/Platform/Linux/System/Dispatcher.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/Platform/Linux/System/Dispatcher.cpp b/src/Platform/Linux/System/Dispatcher.cpp
index 4269eb7a25..a4d5d3e39a 100755
--- a/src/Platform/Linux/System/Dispatcher.cpp
+++ b/src/Platform/Linux/System/Dispatcher.cpp
@@ -329,6 +329,8 @@ void Dispatcher::yield() {
           contextPair->readContext->context->interruptProcedure = nullptr;
           pushContext(contextPair->readContext->context);
           contextPair->readContext->events = events[i].events;
+        } else if ((events[i].events & (EPOLLERR | EPOLLHUP)) != 0) {
+          throw std::runtime_error("Dispatcher::dispatch, events & (EPOLLERR | EPOLLHUP) != 0");
         } else {
           continue;
         }