X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=time.c;h=6f6dd49e330df2f4d85565aa65ab1e02615abebd;hp=d7d803d932efd704642f9098989f6661f2731377;hb=24758c5f;hpb=4ad9b98ca90d603eecb5c9c403e0f7bbdc3be6a6

diff --git a/time.c b/time.c
index d7d803d9..6f6dd49e 100644
--- a/time.c
+++ b/time.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005-2011 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2005-2013 Andre Noll <maan@systemlinux.org>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -191,3 +191,40 @@ void compute_chunk_time(long unsigned chunk_num,
 	tv_scale(chunk_num, chunk_tv, &tmp);
 	tv_add(&tmp, stream_start, result);
 }
+
+/**
+ * Retrieve the time of the realtime clock.
+ *
+ * \param tv Where to store the result.
+ *
+ * Gets the current value of the system-wide real-time clock (identified by id
+ * \p CLOCK_REALTIME). If \a tv is \p NULL, the value is stored in a static
+ * buffer, otherwise it is stored at the location given by \a tv.
+ *
+ * \return This function aborts on errors. On success it returns a pointer to
+ * memory containing the current time.
+ *
+ * \sa clock_gettime(2), gettimeofday(2).
+ */
+struct timeval *clock_get_realtime(struct timeval *tv)
+{
+	static struct timeval user_friendly;
+
+	if (!tv)
+		tv = &user_friendly;
+#ifdef HAVE_CLOCK_GETTIME
+	{
+		struct timespec t;
+		int ret;
+
+		ret = clock_gettime(CLOCK_REALTIME, &t);
+		assert(ret == 0);
+		tv->tv_sec = t.tv_sec;
+		tv->tv_usec = t.tv_nsec / 1000;
+	}
+#else
+	#include <sys/time.h>
+	gettimeofday(tv, NULL);
+#endif /* HAVE_CLOCK_GETTIME */
+	return tv;
+}