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Merging JakobR's OS X build changes.

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This commit is contained in:
Meredith L. Patterson 2013-10-18 12:14:18 +02:00
parent 75dc4710a4
commit 43f1d70a5f
4 changed files with 39 additions and 12 deletions
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29
src/benchmark.c
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@ -4,6 +4,29 @@
#include "hammer.h"
#include "internal.h"
#ifdef __MACH__
#include <mach/clock.h>
#include <mach/mach.h>
#endif
void h_benchmark_clock_gettime(struct timespec *ts) {
#ifdef __MACH__ // OS X does not have clock_gettime, use clock_get_time
/*
* This returns real time, not CPU time. See http://stackoverflow.com/a/6725161
* Possible solution: http://stackoverflow.com/a/11659289
*/
clock_serv_t cclock;
mach_timespec_t mts;
host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
clock_get_time(cclock, &mts);
mach_port_deallocate(mach_task_self(), cclock);
ts->tv_sec = mts.tv_sec;
ts->tv_nsec = mts.tv_nsec;
#else
clock_gettime(CLOCK_THREAD_CPUTIME_ID, ts);
#endif
}
/*
Usage:
Create your parser (i.e., const HParser*), and an array of test cases
@ -88,12 +111,12 @@ HBenchmarkResults *h_benchmark__m(HAllocator* mm__, HParser* parser, HParserTest
long long time_diff;
do {
count *= 2; // Yes, this means that the first run will run the function twice. This is fine, as we want multiple runs anyway.
clock_gettime(CLOCK_THREAD_CPUTIME_ID, &ts_start);
h_benchmark_clock_gettime(&ts_start);
for (cur = 0; cur < count; cur++) {
h_parse_result_free(h_parse(parser, tc->input, tc->length));
}
clock_gettime(CLOCK_THREAD_CPUTIME_ID, &ts_end);
h_benchmark_clock_gettime(&ts_end);
// time_diff is in ns
time_diff = (ts_end.tv_sec - ts_start.tv_sec) * 1000000000 + (ts_end.tv_nsec - ts_start.tv_nsec);
} while (time_diff < 100000000);