X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=include%2Flttng%2Fclock.h;fp=include%2Flttng%2Fclock.h;h=ebcd624ff74e77d28e4ef6b220d4d4c55ed31826;hb=4318ae1be57eb7983ab4857a7a8eeb4a030a8216;hp=0000000000000000000000000000000000000000;hpb=d4419b81b243bc3a6bdd4a09b3ca2216d044a1c7;p=lttng-ust.git

diff --git a/include/lttng/clock.h b/include/lttng/clock.h
new file mode 100644
index 00000000..ebcd624f
--- /dev/null
+++ b/include/lttng/clock.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2010  Pierre-Marc Fournier
+ * Copyright (C) 2011  Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; version 2.1 of
+ * the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#ifndef _UST_CLOCK_H
+#define _UST_CLOCK_H
+
+#include <time.h>
+#include <sys/time.h>
+#include <stdint.h>
+#include <stddef.h>
+#include <lttng/core.h>
+
+/* TRACE CLOCK */
+
+/*
+ * Currently using the kernel MONOTONIC clock, waiting for kernel-side
+ * LTTng to implement mmap'd trace clock.
+ */
+
+/* Choosing correct trace clock */
+
+static __inline__ uint64_t trace_clock_read64(void)
+{
+	struct timespec ts;
+	uint64_t retval;
+
+	clock_gettime(CLOCK_MONOTONIC, &ts);
+	retval = ts.tv_sec;
+	retval *= 1000000000;
+	retval += ts.tv_nsec;
+
+	return retval;
+}
+
+#if __i386__ || __x86_64__
+static __inline__ uint64_t trace_clock_frequency(void)
+{
+	return 1000000000LL;
+}
+#endif /* #else #if __i386__ || __x86_64__ */
+
+static __inline__ uint32_t trace_clock_freq_scale(void)
+{
+	return 1;
+}
+
+#endif /* _UST_CLOCK_H */