[PATCH v3 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait.

[Yu Ning <ning.yu@canonical.com>]

The default PTHREAD_COND_INITIALIZER initializer uses realtime clock,
we need to switch to use the monotic clock.

Signed-off-by: Yu Ning <ning.yu@ubuntu.com>
---
 lib/alarm.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/lib/alarm.c b/lib/alarm.c
index 65a80ae..5b98b2d 100755
--- a/lib/alarm.c
+++ b/lib/alarm.c
@@ -23,7 +23,7 @@ struct alarm {
 };
 
 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
-static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+static pthread_cond_t cond;
 static LIST_HEAD(alarms);
 
 #define alarm_lock() \
@@ -212,6 +212,7 @@ int alarm_start_handler(void)
 	pthread_t thid;
 	pthread_attr_t attrs;
 	pthread_attr_t *pattrs = &attrs;
+	pthread_condattr_t condattrs;
 	int status;
 
 	status = pthread_attr_init(pattrs);
@@ -224,8 +225,18 @@ int alarm_start_handler(void)
 #endif
 	}
 
+	status = pthread_condattr_init(&condattrs);
+	if (status)
+		fatal(status);
+
+	pthread_condattr_setclock(&condattrs, CLOCK_MONOTONIC);
+	pthread_cond_init(&cond, &condattrs);
+
 	status = pthread_create(&thid, pattrs, alarm_handler, NULL);
 
+	pthread_condattr_destroy(&condattrs);
+	pthread_condattr_destroy(&cond);
+
 	if (pattrs)
 		pthread_attr_destroy(pattrs);
 
-- 
1.9.1

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