[incubator-heron] branch master updated: EventLoop Signal Handler (#3212)

[nwang]

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nwang pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-heron.git


The following commit(s) were added to refs/heads/master by this push:
     new 2bfe579  EventLoop Signal Handler (#3212)
2bfe579 is described below

commit 2bfe579dd3f16871fd42aa23c3800fa13576d71f
Author: Xiaoyao Qian <qia...@illinois.edu>
AuthorDate: Mon Mar 11 16:40:54 2019 -0700

    EventLoop Signal Handler (#3212)
---
 heron/common/src/cpp/network/event_loop_impl.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/heron/common/src/cpp/network/event_loop_impl.cpp 
b/heron/common/src/cpp/network/event_loop_impl.cpp
index c37fc7e..b7de06d 100644
--- a/heron/common/src/cpp/network/event_loop_impl.cpp
+++ b/heron/common/src/cpp/network/event_loop_impl.cpp
@@ -76,7 +76,14 @@ EventLoopImpl::~EventLoopImpl() {
   event_base_free(mDispatcher);
 }
 
+static void handleTerm(evutil_socket_t _, sp_int16 what, void* ctx) {
+  struct event_base *evb = (struct event_base*) ctx;
+  event_base_loopbreak(evb);
+}
+
 void EventLoopImpl::loop() {
+  struct event *term = evsignal_new(mDispatcher, SIGTERM, handleTerm, 
mDispatcher);
+  event_add(term, NULL);
   // This never returns
   event_base_dispatch(mDispatcher);
 }