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Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,93 @@ | ||
| /* | ||
| Copyright (c) 2017 Martin Sustrik | ||
| Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| of this software and associated documentation files (the "Software"), | ||
| to deal in the Software without restriction, including without limitation | ||
| the rights to use, copy, modify, merge, publish, distribute, sublicense, | ||
| and/or sell copies of the Software, and to permit persons to whom | ||
| the Software is furnished to do so, subject to the following conditions: | ||
| The above copyright notice and this permission notice shall be included | ||
| in all copies or substantial portions of the Software. | ||
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | ||
| THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | ||
| FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | ||
| IN THE SOFTWARE. | ||
| */ | ||
|
|
||
| #include <stdint.h> | ||
| #include <sys/time.h> | ||
| #include <time.h> | ||
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||
| #if defined __APPLE__ | ||
| #include <mach/mach_time.h> | ||
| #endif | ||
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| #if defined(__x86_64__) || defined(__i386__) | ||
| #include <x86intrin.h> | ||
| #define DILL_RDTSC_DIFF 1000000ULL | ||
| #endif | ||
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||
| #include "cr.h" | ||
| #include "libdill.h" | ||
| #include "pollset.h" | ||
| #include "utils.h" | ||
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||
| static int64_t mnow(void) { | ||
| #if defined __APPLE__ | ||
| static mach_timebase_info_data_t dill_mtid = {0}; | ||
| if (dill_slow(!dill_mtid.denom)) | ||
| mach_timebase_info(&dill_mtid); | ||
| uint64_t ticks = mach_absolute_time(); | ||
| return (int64_t)(ticks * dill_mtid.numer / dill_mtid.denom / 1000000); | ||
| #else | ||
|
|
||
| #if defined CLOCK_MONOTONIC_COARSE | ||
| clock_t id = CLOCK_MONOTONIC_COARSE; | ||
| #elif defined CLOCK_MONOTONIC_FAST | ||
| clock_t id = CLOCK_MONOTONIC_FAST; | ||
| #elif defined CLOCK_MONOTONIC | ||
| clock_t id = CLOCK_MONOTONIC; | ||
| #else | ||
| #define DILL_NOW_FALLBACK | ||
| #endif | ||
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||
| #if !defined DILL_NOW_FALLBACK | ||
| struct timespec ts; | ||
| int rc = clock_gettime(id, &ts); | ||
| dill_assert (rc == 0); | ||
| return ((int64_t)ts.tv_sec) * 1000 + (((int64_t)ts.tv_nsec) / 1000000); | ||
| #else | ||
| /* This is slow and error-prone (the time can jump backwards!), but it's just | ||
| a last resort option. */ | ||
| struct timeval tv; | ||
| int rc = gettimeofday(&tv, NULL); | ||
| dill_assert (rc == 0); | ||
| return ((int64_t)tv.tv_sec) * 1000 + (((int64_t)tv.tv_usec) / 1000); | ||
| #endif | ||
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||
| #endif | ||
| } | ||
|
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| int64_t now(void) { | ||
| #if defined(__x86_64__) || defined(__i386__) | ||
| static int64_t last_tick = 0; | ||
| static uint64_t last_rdtsc = 0; | ||
| uint64_t rdtsc = __rdtsc(); | ||
| int64_t diff = rdtsc - last_rdtsc; | ||
| if(diff < 0) diff = -diff; | ||
| if(dill_fast(diff < DILL_RDTSC_DIFF)) | ||
| return last_tick; | ||
| else | ||
| last_rdtsc = rdtsc; | ||
| return (last_tick = mnow()); | ||
| #else | ||
| return mnow(); | ||
| #endif | ||
| } | ||
|
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| /* | ||
| Copyright (c) 2017 Martin Sustrik | ||
| Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| of this software and associated documentation files (the "Software"), | ||
| to deal in the Software without restriction, including without limitation | ||
| the rights to use, copy, modify, merge, publish, distribute, sublicense, | ||
| and/or sell copies of the Software, and to permit persons to whom | ||
| the Software is furnished to do so, subject to the following conditions: | ||
| The above copyright notice and this permission notice shall be included | ||
| in all copies or substantial portions of the Software. | ||
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | ||
| THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | ||
| FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | ||
| IN THE SOFTWARE. | ||
| */ | ||
|
|
||
| #ifndef DILL_NOW_INCLUDED | ||
| #define DILL_NOW_INCLUDED | ||
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||
| #endif | ||
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