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Diffstat (limited to 'src/time.c')
-rw-r--r-- | src/time.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/time.c b/src/time.c new file mode 100644 index 0000000..964d2f0 --- /dev/null +++ b/src/time.c @@ -0,0 +1,63 @@ +/* + 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 |