1 files changed, 65 insertions, 0 deletions
diff --git a/src/lib/time.c b/src/lib/time.c
new file mode 100644
index 00000000..37ade2cc
--- /dev/null
+++ b/src/lib/time.c
@@ -0,0 +1,65 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * Licensed under GPL version 2, see file LICENSE in this tarball for details.
+ */
+#include "abrtlib.h"
+
+#define ENABLE_MONOTONIC_SYSCALL 1
+
+#if ENABLE_MONOTONIC_SYSCALL
+
+#include <sys/syscall.h>
+/* Old glibc (< 2.3.4) does not provide this constant. We use syscall
+ * directly so this definition is safe. */
+#ifndef CLOCK_MONOTONIC
+#define CLOCK_MONOTONIC 1
+#endif
+
+/* libc has incredibly messy way of doing this,
+ * typically requiring -lrt. We just skip all this mess */
+static void get_mono(struct timespec *ts)
+{
+	if (syscall(__NR_clock_gettime, CLOCK_MONOTONIC, ts))
+		error_msg_and_die("clock_gettime(MONOTONIC) failed");
+}
+unsigned long long monotonic_ns(void)
+{
+	struct timespec ts;
+	get_mono(&ts);
+	return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
+}
+unsigned long long monotonic_us(void)
+{
+	struct timespec ts;
+	get_mono(&ts);
+	return ts.tv_sec * 1000000ULL + ts.tv_nsec/1000;
+}
+unsigned monotonic_sec(void)
+{
+	struct timespec ts;
+	get_mono(&ts);
+	return ts.tv_sec;
+}
+
+#else
+
+unsigned long long monotonic_ns(void)
+{
+	struct timeval tv;
+	gettimeofday(&tv, NULL);
+	return tv.tv_sec * 1000000000ULL + tv.tv_usec * 1000;
+}
+unsigned long long monotonic_us(void)
+{
+	struct timeval tv;
+	gettimeofday(&tv, NULL);
+	return tv.tv_sec * 1000000ULL + tv.tv_usec;
+}
+unsigned monotonic_sec(void)
+{
+	return time(NULL);
+}
+
+#endif