mirror of
https://github.com/jart/cosmopolitan.git
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fa20edc44d
- Remove most __ASSEMBLER__ __LINKER__ ifdefs - Rename libc/intrin/bits.h to libc/serialize.h - Block pthread cancelation in fchmodat() polyfill - Remove `clang-format off` statements in third_party
207 lines
6 KiB
C
207 lines
6 KiB
C
/*
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* Copyright (C) 2019-2021 Yann Collet, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under both the BSD-style license (found in the
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* LICENSE file in the root directory of this source tree) and the GPLv2 (found
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* in the COPYING file in the root directory of this source tree).
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* You may select, at your option, one of the above-listed licenses.
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*/
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/* === Dependencies === */
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#include "third_party/xxhash/tests/bench/timefn.h"
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/*-****************************************
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* Time functions
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******************************************/
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#if defined(_WIN32) /* Windows */
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#include "libc/calls/calls.h"
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#include "libc/calls/termios.h"
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#include "libc/fmt/conv.h"
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#include "libc/limits.h"
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#include "libc/mem/alg.h"
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#include "libc/mem/alloca.h"
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#include "libc/mem/mem.h"
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#include "libc/runtime/runtime.h"
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#include "libc/stdio/dprintf.h"
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#include "libc/stdio/rand.h"
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#include "libc/temp.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/exit.h"
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#include "third_party/musl/crypt.h"
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#include "third_party/musl/rand48.h" /* abort */
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#include "libc/calls/calls.h"
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#include "libc/calls/weirdtypes.h"
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#include "libc/stdio/dprintf.h"
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#include "libc/stdio/stdio.h"
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#include "libc/temp.h"
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#include "third_party/musl/tempnam.h" /* perror */
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UTIL_time_t UTIL_getTime(void) { UTIL_time_t x; QueryPerformanceCounter(&x); return x; }
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PTime UTIL_getSpanTimeMicro(UTIL_time_t clockStart, UTIL_time_t clockEnd)
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{
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static LARGE_INTEGER ticksPerSecond;
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static int init = 0;
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if (!init) {
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if (!QueryPerformanceFrequency(&ticksPerSecond)) {
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perror("timefn::QueryPerformanceFrequency");
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abort();
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}
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init = 1;
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}
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return 1000000ULL*(clockEnd.QuadPart - clockStart.QuadPart)/ticksPerSecond.QuadPart;
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}
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PTime UTIL_getSpanTimeNano(UTIL_time_t clockStart, UTIL_time_t clockEnd)
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{
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static LARGE_INTEGER ticksPerSecond;
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static int init = 0;
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if (!init) {
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if (!QueryPerformanceFrequency(&ticksPerSecond)) {
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perror("timefn::QueryPerformanceFrequency");
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abort();
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}
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init = 1;
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}
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return 1000000000ULL*(clockEnd.QuadPart - clockStart.QuadPart)/ticksPerSecond.QuadPart;
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}
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#elif defined(__APPLE__) && defined(__MACH__)
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UTIL_time_t UTIL_getTime(void) { return mach_absolute_time(); }
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PTime UTIL_getSpanTimeMicro(UTIL_time_t clockStart, UTIL_time_t clockEnd)
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{
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static mach_timebase_info_data_t rate;
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static int init = 0;
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if (!init) {
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mach_timebase_info(&rate);
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init = 1;
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}
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return (((clockEnd - clockStart) * (PTime)rate.numer) / ((PTime)rate.denom))/1000ULL;
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}
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PTime UTIL_getSpanTimeNano(UTIL_time_t clockStart, UTIL_time_t clockEnd)
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{
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static mach_timebase_info_data_t rate;
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static int init = 0;
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if (!init) {
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mach_timebase_info(&rate);
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init = 1;
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}
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return ((clockEnd - clockStart) * (PTime)rate.numer) / ((PTime)rate.denom);
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}
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#elif (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) /* C11 */) \
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&& defined(TIME_UTC) /* C11 requires timespec_get, but FreeBSD 11 lacks it, while still claiming C11 compliance */
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#include "libc/calls/calls.h"
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#include "libc/calls/termios.h"
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#include "libc/fmt/conv.h"
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#include "libc/limits.h"
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#include "libc/mem/alg.h"
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#include "libc/mem/alloca.h"
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#include "libc/mem/mem.h"
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#include "libc/runtime/runtime.h"
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#include "libc/stdio/dprintf.h"
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#include "libc/stdio/rand.h"
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#include "libc/temp.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/exit.h"
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#include "third_party/getopt/getopt.internal.h"
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#include "third_party/musl/crypt.h"
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#include "third_party/musl/rand48.h" /* abort */
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#include "libc/calls/calls.h"
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#include "libc/calls/weirdtypes.h"
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#include "libc/stdio/dprintf.h"
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#include "libc/stdio/stdio.h"
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#include "libc/temp.h"
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#include "third_party/musl/tempnam.h" /* perror */
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UTIL_time_t UTIL_getTime(void)
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{
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/* time must be initialized, othersize it may fail msan test.
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* No good reason, likely a limitation of timespec_get() for some target */
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UTIL_time_t time = UTIL_TIME_INITIALIZER;
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if (timespec_get(&time, TIME_UTC) != TIME_UTC) {
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perror("timefn::timespec_get");
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abort();
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}
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return time;
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}
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static UTIL_time_t UTIL_getSpanTime(UTIL_time_t begin, UTIL_time_t end)
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{
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UTIL_time_t diff;
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if (end.tv_nsec < begin.tv_nsec) {
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diff.tv_sec = (end.tv_sec - 1) - begin.tv_sec;
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diff.tv_nsec = (end.tv_nsec + 1000000000ULL) - begin.tv_nsec;
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} else {
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diff.tv_sec = end.tv_sec - begin.tv_sec;
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diff.tv_nsec = end.tv_nsec - begin.tv_nsec;
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}
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return diff;
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}
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PTime UTIL_getSpanTimeMicro(UTIL_time_t begin, UTIL_time_t end)
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{
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UTIL_time_t const diff = UTIL_getSpanTime(begin, end);
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PTime micro = 0;
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micro += 1000000ULL * diff.tv_sec;
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micro += diff.tv_nsec / 1000ULL;
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return micro;
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}
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PTime UTIL_getSpanTimeNano(UTIL_time_t begin, UTIL_time_t end)
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{
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UTIL_time_t const diff = UTIL_getSpanTime(begin, end);
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PTime nano = 0;
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nano += 1000000000ULL * diff.tv_sec;
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nano += diff.tv_nsec;
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return nano;
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}
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#else /* relies on standard C90 (note : clock_t measurements can be wrong when using multi-threading) */
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UTIL_time_t UTIL_getTime(void) { return clock(); }
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PTime UTIL_getSpanTimeMicro(UTIL_time_t clockStart, UTIL_time_t clockEnd) { return 1000000ULL * (clockEnd - clockStart) / CLOCKS_PER_SEC; }
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PTime UTIL_getSpanTimeNano(UTIL_time_t clockStart, UTIL_time_t clockEnd) { return 1000000000ULL * (clockEnd - clockStart) / CLOCKS_PER_SEC; }
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#endif
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/* returns time span in microseconds */
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PTime UTIL_clockSpanMicro(UTIL_time_t clockStart )
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{
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UTIL_time_t const clockEnd = UTIL_getTime();
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return UTIL_getSpanTimeMicro(clockStart, clockEnd);
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}
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/* returns time span in microseconds */
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PTime UTIL_clockSpanNano(UTIL_time_t clockStart )
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{
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UTIL_time_t const clockEnd = UTIL_getTime();
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return UTIL_getSpanTimeNano(clockStart, clockEnd);
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}
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void UTIL_waitForNextTick(void)
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{
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UTIL_time_t const clockStart = UTIL_getTime();
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UTIL_time_t clockEnd;
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do {
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clockEnd = UTIL_getTime();
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} while (UTIL_getSpanTimeNano(clockStart, clockEnd) == 0);
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}
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