From 0cf6c6c7db0b22b01aebf8e83878b0bac9066eb6 Mon Sep 17 00:00:00 2001
From: Steven Dake <sdake@redhat.com>
Date: Sun, 21 Jun 2009 16:33:25 +0000
Subject: [PATCH] Add tests for posix scheduling apis to configure.ac and use
 them to determine if we should set scheduling priorities or not.

git-svn-id: http://svn.fedorahosted.org/svn/corosync/trunk@2277 fd59a12c-fef9-0310-b244-a6a79926bd2f
---
 configure.ac    | 3 ++-
 exec/coroipcs.c | 2 ++
 exec/logsys.c   | 2 ++
 exec/main.c     | 5 +++--
 exec/timer.c    | 2 +-
 5 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/configure.ac b/configure.ac
index 8c7b8fc9..2d08e63f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -104,7 +104,8 @@ AC_CHECK_FUNCS([alarm alphasort atexit bzero dup2 endgrent endpwent fcntl \
 		getcwd getpeerucred getpeereid gettimeofday inet_ntoa memmove \
 		memset mkdir scandir select socket strcasecmp strchr strdup \
 		strerror strrchr strspn strstr pthread_spin_lock \
-		pthread_spin_unlock])
+		pthread_spin_unlock pthread_setschedparam \
+		sched_get_priority_max])
 
 # add man and init dirs?
 AC_CONFIG_FILES([Makefile
diff --git a/exec/coroipcs.c b/exec/coroipcs.c
index f20b4f61..96c43dc5 100644
--- a/exec/coroipcs.c
+++ b/exec/coroipcs.c
@@ -528,10 +528,12 @@ static void *pthread_ipc_consumer (void *conn)
 	int send_ok;
 	unsigned int new_message;
 
+#if defined(HAVE_PTHREAD_SETSCHEDPARAM) && defined(HAVE_SCHED_GET_PRIORITY_MAX)
 	if (api->sched_policy != 0) {
 		res = pthread_setschedparam (conn_info->thread,
 			api->sched_policy, api->sched_param);
 	}
+#endif
 
 	for (;;) {
 		sop.sem_num = 0;
diff --git a/exec/logsys.c b/exec/logsys.c
index 2c529fcf..faa1bd2c 100644
--- a/exec/logsys.c
+++ b/exec/logsys.c
@@ -1609,9 +1609,11 @@ int logsys_thread_priority_set (
 {
 	int res = 0;
 
+#if defined(HAVE_PTHREAD_SETSCHEDPARAM) && defined(HAVE_SCHED_GET_PRIORITY_MAX)
 	if (policy != SCHED_OTHER) {
 		res = pthread_setschedparam (logsys_thread_id, policy, param);
 	}
+#endif
 	if (after_log_ops_yield > 0) {
 		logsys_after_log_ops_yield = after_log_ops_yield;
 	}
diff --git a/exec/main.c b/exec/main.c
index 500f7c11..6a1ed8d9 100644
--- a/exec/main.c
+++ b/exec/main.c
@@ -326,7 +326,7 @@ static void corosync_tty_detach (void)
 
 static void corosync_setscheduler (void)
 {
-#if ! defined(TS_CLASS) && (defined(COROSYNC_BSD) || defined(COROSYNC_LINUX) || defined(COROSYNC_SOLARIS))
+#if defined(HAVE_PTHREAD_SETSCHEDPARAM) && defined(HAVE_SCHED_GET_PRIORITY_MAX)
 	int res;
 
 	sched_priority = sched_get_priority_max (SCHED_RR);
@@ -342,7 +342,8 @@ static void corosync_setscheduler (void)
 		sched_priority = 0;
 	}
 #else
-	log_printf(LOGSYS_LEVEL_WARNING, "Scheduler priority left to default value (no OS support)\n");
+	log_printf(LOGSYS_LEVEL_WARNING,
+		"The Platform is missing process priority setting features.  Leaving at default.");
 #endif
 }
 
diff --git a/exec/timer.c b/exec/timer.c
index 3c47019e..69f9a955 100644
--- a/exec/timer.c
+++ b/exec/timer.c
@@ -107,7 +107,7 @@ static void *prioritized_timer_thread (void *data)
 	int fds;
 	unsigned long long timeout;
 
-#if ! defined(TS_CLASS) && (defined(COROSYNC_BSD) || defined(COROSYNC_LINUX) || defined(COROSYNC_SOLARIS))
+#if defined(HAVE_PTHREAD_SETSCHEDPARAM) && defined(HAVE_SCHED_GET_PRIORITY_MAX)
 	if (sched_priority != 0) {
 		struct sched_param sched_param;