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| author | Daniel Black <daniel@mariadb.org> | 2020-07-15 11:23:19 +1000 |
|---|---|---|
| committer | Daniel Black <daniel@mariadb.org> | 2020-07-28 12:44:26 +1000 |
| commit | 3cb9131ac24546a15bc7eb4b68fedc76906a344f (patch) | |
| tree | 1ad4287c66997c9d2e1eb09433f3ad60a1128d83 /mysys/my_rdtsc.c | |
| parent | ba191f7e43962b8f36699c087786cb7ae9ff1fe5 (diff) | |
| download | mariadb-git-3cb9131ac24546a15bc7eb4b68fedc76906a344f.tar.gz | |
MDEV-23175: my_timer_milliseconds clock_gettime for multiple platfomrs
Small postfix to MDEV-23175 to ensure faster option on FreeBSD
and compatibility to Solaris that isn't high resolution.
ftime is left as a backup in case an implementation doesn't
contain any of these clocks.
FreeBSD
$ ./unittest/mysys/my_rdtsc-t
1..11
# ----- Routine ---------------
# myt.cycles.routine : 5
# myt.nanoseconds.routine : 11
# myt.microseconds.routine : 13
# myt.milliseconds.routine : 11
# myt.ticks.routine : 17
# ----- Frequency -------------
# myt.cycles.frequency : 3610295566
# myt.nanoseconds.frequency : 1000000000
# myt.microseconds.frequency : 1000000
# myt.milliseconds.frequency : 899
# myt.ticks.frequency : 136
# ----- Resolution ------------
# myt.cycles.resolution : 1
# myt.nanoseconds.resolution : 1
# myt.microseconds.resolution : 1
# myt.milliseconds.resolution : 7
# myt.ticks.resolution : 1
# ----- Overhead --------------
# myt.cycles.overhead : 26
# myt.nanoseconds.overhead : 19140
# myt.microseconds.overhead : 19036
# myt.milliseconds.overhead : 578
# myt.ticks.overhead : 21544
ok 1 - my_timer_init() did not crash
ok 2 - The cycle timer is strictly increasing
ok 3 - The cycle timer is implemented
ok 4 - The nanosecond timer is increasing
ok 5 - The nanosecond timer is implemented
ok 6 - The microsecond timer is increasing
ok 7 - The microsecond timer is implemented
ok 8 - The millisecond timer is increasing
ok 9 - The millisecond timer is implemented
ok 10 - The tick timer is increasing
ok 11 - The tick timer is implemented
Diffstat (limited to 'mysys/my_rdtsc.c')
| -rw-r--r-- | mysys/my_rdtsc.c | 32 |
1 files changed, 22 insertions, 10 deletions
diff --git a/mysys/my_rdtsc.c b/mysys/my_rdtsc.c index 514fd4c74ea..40b78986985 100644 --- a/mysys/my_rdtsc.c +++ b/mysys/my_rdtsc.c @@ -75,7 +75,7 @@ #endif #endif -#if !defined(CLOCK_GETTIME) && defined(HAVE_SYS_TIMEB_H) && defined(HAVE_FTIME) +#if defined(HAVE_SYS_TIMEB_H) && defined(HAVE_FTIME) #include <sys/timeb.h> /* for ftime */ #endif @@ -173,17 +173,27 @@ ulonglong my_timer_microseconds(void) milliseconds. */ +#if defined(HAVE_CLOCK_GETTIME) +#if defined(CLOCK_MONOTONIC_FAST) +/* FreeBSD */ +#define MY_CLOCK_ID CLOCK_MONOTONIC_FAST +#elif defined(CLOCK_MONOTONIC_COARSE) +/* Linux */ +#define MY_CLOCK_ID CLOCK_MONOTONIC_COARSE +#elif defined(CLOCK_MONOTONIC) +/* POSIX (includes OSX) */ +#define MY_CLOCK_ID CLOCK_MONOTONIC +#elif defined(CLOCK_REALTIME) +/* Solaris (which doesn't seem to have MONOTONIC) */ +#define MY_CLOCK_ID CLOCK_REALTIME +#endif +#endif + ulonglong my_timer_milliseconds(void) { -#if defined(HAVE_CLOCK_GETTIME) +#if defined(MY_CLOCK_ID) struct timespec tp; -#ifdef CLOCK_MONOTONIC_COARSE - /* Linux */ - clock_gettime(CLOCK_MONOTONIC_COARSE, &tp); -#else - /* POSIX */ - clock_gettime(CLOCK_MONOTONIC, &tp); -#endif + clock_gettime(MY_CLOCK_ID, &tp); return (ulonglong)tp.tv_sec * 1000 + (ulonglong)tp.tv_nsec / 1000000; #elif defined(HAVE_SYS_TIMEB_H) && defined(HAVE_FTIME) /* ftime() is obsolete but maybe the platform is old */ @@ -436,7 +446,9 @@ void my_timer_init(MY_TIMER_INFO *mti) /* milliseconds */ mti->milliseconds.frequency= 1000; /* initial assumption */ -#if defined(HAVE_SYS_TIMEB_H) && defined(HAVE_FTIME) +#ifdef MY_CLOCK_ID + mti->milliseconds.routine= MY_TIMER_ROUTINE_CLOCK_GETTIME; +#elif defined(HAVE_SYS_TIMEB_H) && defined(HAVE_FTIME) mti->milliseconds.routine= MY_TIMER_ROUTINE_FTIME; #elif defined(_WIN32) mti->milliseconds.routine= MY_TIMER_ROUTINE_GETSYSTEMTIMEASFILETIME; |