X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=src%2Fcommon%2Fcompat%2Ftime.hpp;fp=src%2Fcommon%2Fcompat%2Ftime.hpp;h=37f472a4aad1378d95542fde0f258132b76c368c;hb=7532fa3bd22e403958f46cd35c824f490d93292d;hp=0000000000000000000000000000000000000000;hpb=985aea182b618c85c51651f224abedfe367c75ee;p=lttng-tools.git

diff --git a/src/common/compat/time.hpp b/src/common/compat/time.hpp
new file mode 100644
index 000000000..37f472a4a
--- /dev/null
+++ b/src/common/compat/time.hpp
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2016 Michael Jeanson <mjeanson@efficios.com>
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+#ifndef _COMPAT_TIME_H
+#define _COMPAT_TIME_H
+
+#include <time.h>
+
+#ifdef __APPLE__
+
+typedef uint64_t timer_t;
+
+#include <mach/mach.h>
+#include <mach/clock.h>
+#include <common/compat/errno.hpp>
+
+#undef NSEC_PER_SEC
+#undef NSEC_PER_MSEC
+#undef NSEC_PER_USEC
+#undef USEC_PER_SEC
+
+#endif /* __APPLE__ */
+
+/* macOS/OS X 10.12 (Sierra) and up provide clock_gettime() */
+#if defined(__APPLE__) && !defined(LTTNG_HAVE_CLOCK_GETTIME)
+
+typedef int clockid_t;
+#define CLOCK_REALTIME CALENDAR_CLOCK
+#define CLOCK_MONOTONIC SYSTEM_CLOCK
+
+static inline
+int lttng_clock_gettime(clockid_t clk_id, struct timespec *tp)
+{
+	int ret = 0;
+	clock_serv_t clock;
+	mach_timespec_t now;
+
+	if (clk_id != CLOCK_REALTIME && clk_id != CLOCK_MONOTONIC) {
+		ret = -1;
+		errno = EINVAL;
+		goto end;
+	}
+
+	host_get_clock_service(mach_host_self(), clk_id, &clock);
+
+	ret = clock_get_time(clock, &now);
+	if (ret != KERN_SUCCESS) {
+		ret = -1;
+		goto deallocate;
+	}
+
+	tp->tv_sec = now.tv_sec;
+	tp->tv_nsec = now.tv_nsec;
+
+deallocate:
+	mach_port_deallocate(mach_task_self(), clock);
+end:
+	return ret;
+}
+
+#else /* __APPLE__ && !LTTNG_HAVE_CLOCK_GETTIME */
+
+static inline
+int lttng_clock_gettime(clockid_t clk_id, struct timespec *tp)
+{
+	return clock_gettime(clk_id, tp);
+}
+
+#endif /* __APPLE__ && !LTTNG_HAVE_CLOCK_GETTIME */
+
+#endif /* _COMPAT_TIME_H */