From 47f8db48b1012ec5571a9946ac9d9e39b26ba9be Mon Sep 17 00:00:00 2001
From: Timo Hirvonen <tihirvon@gmail.com>
Date: Sun, 11 May 2008 18:50:08 +0300
Subject: [PATCH] Check if real-time scheduling is supported

---
 configure | 30 ++++++++++++++++++++++++++++++
 player.c  |  4 ++--
 2 files changed, 32 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index 1036cf3..07e6ee1 100755
--- a/configure
+++ b/configure
@@ -44,6 +44,35 @@ check_compat()
 	makefile_vars COMPAT_LIBS
 }
 
+rtsched_code="
+#include <pthread.h>
+
+int main(int argc, char *argv[])
+{
+	pthread_attr_t attr;
+	struct sched_param param;
+
+	pthread_attr_init(&attr);
+	pthread_attr_setschedpolicy(&attr, SCHED_RR);
+	param.sched_priority = sched_get_priority_max(SCHED_RR);
+	pthread_attr_setschedparam(&attr, &param);
+	return 0;
+}
+"
+
+check_rtsched()
+{
+	msg_checking "for realtime scheduling"
+	if try_compile_link "$rtsched_code" $PTHREAD_CFLAGS $PTHREAD_LIBS
+	then
+		msg_result yes
+		EXTRA_CFLAGS="$EXTRA_CFLAGS -DREALTIME_SCHEDULING"
+	else
+		msg_result no
+	fi
+	return 0
+}
+
 check_ncurses()
 {
 	if check_library NCURSES "" -lncursesw
@@ -269,6 +298,7 @@ check check_endianness
 check check_compat
 check check_dl
 check check_pthread
+check check_rtsched
 check check_ncurses
 check check_iconv
 
diff --git a/player.c b/player.c
index b13f337..4e0c046 100644
--- a/player.c
+++ b/player.c
@@ -868,7 +868,7 @@ static void *producer_loop(void *arg)
 void player_init(const struct player_callbacks *callbacks)
 {
 	int rc;
-#if defined(__linux__) || defined(__FreeBSD__)
+#ifdef REALTIME_SCHEDULING
 	pthread_attr_t attr;
 #endif
 	pthread_attr_t *attrp = NULL;
@@ -881,7 +881,7 @@ void player_init(const struct player_callbacks *callbacks)
 
 	player_cbs = callbacks;
 
-#if defined(__linux__) || defined(__FreeBSD__)
+#ifdef REALTIME_SCHEDULING
 	rc = pthread_attr_init(&attr);
 	BUG_ON(rc);
 	rc = pthread_attr_setschedpolicy(&attr, SCHED_RR);
-- 
2.11.4.GIT