From e29a44362695a850a28c26062d216ff9cccf34df Mon Sep 17 00:00:00 2001
From: Eric Cano <Eric.Cano@cern.ch>
Date: Mon, 30 Apr 2018 16:19:52 +0200
Subject: [PATCH] Added support to EINTR error in main process.
This allows attaching a debugger to the main process.
---
tapeserver/daemon/ProcessManager.cpp | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tapeserver/daemon/ProcessManager.cpp b/tapeserver/daemon/ProcessManager.cpp
index bf2bbe848a..64985df3f8 100644
--- a/tapeserver/daemon/ProcessManager.cpp
+++ b/tapeserver/daemon/ProcessManager.cpp
@@ -277,6 +277,8 @@ void ProcessManager::runEventLoop() {
const int eventSlotCount = 5;
::epoll_event ee[eventSlotCount];
int receivedEvents = ::epoll_wait(m_epollFd, ee, eventSlotCount, nextTimeoutMs);
+ // epoll_wait can get interrupted by signal (like while debugging). This is should not be treated as an error.
+ if (-1 == receivedEvents && EINTR == errno) receivedEvents = 0;
cta::exception::Errnum::throwOnMinusOne(receivedEvents,
"In ProcessManager::run(): failed to ::epoll_wait()");
for (int i=0; i< receivedEvents; i++) {
--
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