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diff --git a/src/time.c b/src/time.c
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+/*
+  Copyright (c) 2012-2016, Matthias Schiffer <mschiffer@universe-factory.net>
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    1. Redistributions of source code must retain the above copyright notice,
+       this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright notice,
+       this list of conditions and the following disclaimer in the documentation
+       and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/**
+   \file
+
+   Abstractions for monotonic timestamps
+*/
+
+
+#include "fastd.h"
+
+#include <time.h>
+
+
+#ifdef __APPLE__
+
+#include <mach/mach_time.h>
+
+/** Returns a monotonic timestamp in milliseconds */
+int64_t fastd_get_time(void) {
+	static mach_timebase_info_data_t timebase_info = {};
+
+	if (!timebase_info.denom)
+		mach_timebase_info(&timebase_info);
+
+	int64_t nsecs = (((long double)mach_absolute_time())*timebase_info.numer) / timebase_info.denom;
+	return nsecs / 1000000;
+}
+
+#else
+
+/** Returns a monotonic timestamp in milliseconds */
+int64_t fastd_get_time(void) {
+	struct timespec ts;
+	clock_gettime(CLOCK_MONOTONIC, &ts);
+
+	return (1000*(int64_t)ts.tv_sec) + ts.tv_nsec/1000000;
+}
+
+#endif