event/Thread: reduce the RTIO timer slack to 10us

MPD's default is 100ms, which is too long for the real-time I/O thread. The OutputThread has 100us, but the real-time I/O thread might have tighter deadlines. This change has currently no effect (I believe), because nobody uses timers on the RTIO thread.

event/Thread: reduce the RTIO timer slack to 10us
a8bf8ede · Max Kellermann · 8682183b · a8bf8ede
Commit a8bf8ede authored Nov 14, 2018 by Max Kellermann
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Thread.cxx src/event/Thread.cxx +3 -0

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--- a/src/event/Thread.cxx
+++ b/src/event/Thread.cxx
@@ -20,6 +20,7 @@
 #include "config.h"
 #include "Thread.hxx"
 #include "thread/Name.hxx"
+#include "thread/Slack.hxx"
 #include "thread/Util.hxx"
 #include "Log.hxx"

@@ -46,6 +47,8 @@ EventThread::Run() noexcept
 	SetThreadName(realtime ? "rtio" : "io");

 	if (realtime) {
+		SetThreadTimerSlackUS(10);
+
 		try {
 			SetThreadRealtime();
 		} catch (...) {