mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-07 06:53:33 +00:00
b0df6c1fce
Cosmopolitan now supports 104 time zones. They're embedded inside any binary that links the localtime() function. Doing so adds about 100kb to the binary size. This change also gets time zones working properly on Windows for the first time. It's not needed to have /etc/localtime exist on Windows, since we can get this information from WIN32. We're also now updated to the latest version of Paul Eggert's TZ library.
252 lines
7.1 KiB
C
252 lines
7.1 KiB
C
/*
|
|
* Copyright (c) Meta Platforms, Inc. and affiliates.
|
|
* All rights reserved.
|
|
*
|
|
* This source code is licensed under both the BSD-style license (found in the
|
|
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
|
|
* in the COPYING file in the root directory of this source tree).
|
|
* You may select, at your option, one of the above-listed licenses.
|
|
*/
|
|
|
|
|
|
/* === Dependencies === */
|
|
|
|
#include "third_party/zstd/programs/timefn.h"
|
|
#include "third_party/zstd/programs/platform.h" /* set _POSIX_C_SOURCE */
|
|
#include "libc/calls/calls.h"
|
|
#include "libc/calls/struct/timespec.h"
|
|
#include "libc/calls/struct/timeval.h"
|
|
#include "libc/calls/weirdtypes.h"
|
|
#include "libc/sysv/consts/clock.h"
|
|
#include "libc/sysv/consts/sched.h"
|
|
#include "libc/sysv/consts/timer.h"
|
|
#include "libc/time.h" /* CLOCK_MONOTONIC, TIME_UTC */
|
|
|
|
/*-****************************************
|
|
* Time functions
|
|
******************************************/
|
|
|
|
#if defined(_WIN32) /* Windows */
|
|
|
|
#include "libc/nt/accounting.h"
|
|
#include "libc/nt/automation.h"
|
|
#include "libc/nt/console.h"
|
|
#include "libc/nt/debug.h"
|
|
#include "libc/nt/dll.h"
|
|
#include "libc/nt/enum/keyaccess.h"
|
|
#include "libc/nt/enum/regtype.h"
|
|
#include "libc/nt/errors.h"
|
|
#include "libc/nt/events.h"
|
|
#include "libc/nt/files.h"
|
|
#include "libc/nt/ipc.h"
|
|
#include "libc/nt/memory.h"
|
|
#include "libc/nt/paint.h"
|
|
#include "libc/nt/process.h"
|
|
#include "libc/nt/registry.h"
|
|
#include "libc/nt/synchronization.h"
|
|
#include "libc/nt/thread.h"
|
|
#include "libc/nt/windows.h"
|
|
#include "libc/nt/winsock.h" /* LARGE_INTEGER */
|
|
#include "libc/calls/calls.h"
|
|
#include "libc/calls/termios.h"
|
|
#include "libc/fmt/conv.h"
|
|
#include "libc/limits.h"
|
|
#include "libc/mem/alg.h"
|
|
#include "libc/mem/alloca.h"
|
|
#include "libc/mem/mem.h"
|
|
#include "libc/runtime/runtime.h"
|
|
#include "libc/stdio/dprintf.h"
|
|
#include "libc/stdio/rand.h"
|
|
#include "libc/temp.h"
|
|
#include "libc/str/str.h"
|
|
#include "libc/sysv/consts/exit.h"
|
|
#include "third_party/musl/crypt.h"
|
|
#include "third_party/musl/rand48.h" /* abort */
|
|
#include "libc/calls/calls.h"
|
|
#include "libc/calls/weirdtypes.h"
|
|
#include "libc/stdio/dprintf.h"
|
|
#include "libc/stdio/stdio.h"
|
|
#include "libc/temp.h"
|
|
#include "third_party/musl/tempnam.h" /* perror */
|
|
|
|
UTIL_time_t UTIL_getTime(void)
|
|
{
|
|
static LARGE_INTEGER ticksPerSecond;
|
|
static int init = 0;
|
|
if (!init) {
|
|
if (!QueryPerformanceFrequency(&ticksPerSecond)) {
|
|
perror("timefn::QueryPerformanceFrequency");
|
|
abort();
|
|
}
|
|
init = 1;
|
|
}
|
|
{ UTIL_time_t r;
|
|
LARGE_INTEGER x;
|
|
QueryPerformanceCounter(&x);
|
|
r.t = (PTime)(x.QuadPart * 1000000000ULL / ticksPerSecond.QuadPart);
|
|
return r;
|
|
}
|
|
}
|
|
|
|
|
|
#elif defined(__APPLE__) && defined(__MACH__)
|
|
|
|
// MISSING #include <mach/mach_time.h> /* mach_timebase_info_data_t, mach_timebase_info, mach_absolute_time */
|
|
|
|
UTIL_time_t UTIL_getTime(void)
|
|
{
|
|
static mach_timebase_info_data_t rate;
|
|
static int init = 0;
|
|
if (!init) {
|
|
mach_timebase_info(&rate);
|
|
init = 1;
|
|
}
|
|
{ UTIL_time_t r;
|
|
r.t = mach_absolute_time() * (PTime)rate.numer / (PTime)rate.denom;
|
|
return r;
|
|
}
|
|
}
|
|
|
|
/* POSIX.1-2001 (optional) */
|
|
#elif defined(CLOCK_MONOTONIC)
|
|
|
|
#include "libc/calls/calls.h"
|
|
#include "libc/calls/termios.h"
|
|
#include "libc/fmt/conv.h"
|
|
#include "libc/limits.h"
|
|
#include "libc/mem/alg.h"
|
|
#include "libc/mem/alloca.h"
|
|
#include "libc/mem/mem.h"
|
|
#include "libc/runtime/runtime.h"
|
|
#include "libc/stdio/dprintf.h"
|
|
#include "libc/stdio/rand.h"
|
|
#include "libc/temp.h"
|
|
#include "libc/str/str.h"
|
|
#include "libc/sysv/consts/exit.h"
|
|
#include "third_party/getopt/getopt.internal.h"
|
|
#include "third_party/musl/crypt.h"
|
|
#include "third_party/musl/rand48.h" /* abort */
|
|
#include "libc/calls/calls.h"
|
|
#include "libc/calls/weirdtypes.h"
|
|
#include "libc/stdio/dprintf.h"
|
|
#include "libc/stdio/stdio.h"
|
|
#include "libc/temp.h"
|
|
#include "third_party/musl/tempnam.h" /* perror */
|
|
|
|
UTIL_time_t UTIL_getTime(void)
|
|
{
|
|
/* time must be initialized, othersize it may fail msan test.
|
|
* No good reason, likely a limitation of timespec_get() for some target */
|
|
struct timespec time = { 0, 0 };
|
|
if (clock_gettime(CLOCK_MONOTONIC, &time) != 0) {
|
|
perror("timefn::clock_gettime(CLOCK_MONOTONIC)");
|
|
abort();
|
|
}
|
|
{ UTIL_time_t r;
|
|
r.t = (PTime)time.tv_sec * 1000000000ULL + (PTime)time.tv_nsec;
|
|
return r;
|
|
}
|
|
}
|
|
|
|
|
|
/* C11 requires support of timespec_get().
|
|
* However, FreeBSD 11 claims C11 compliance while lacking timespec_get().
|
|
* Double confirm timespec_get() support by checking the definition of TIME_UTC.
|
|
* However, some versions of Android manage to simultaneously define TIME_UTC
|
|
* and lack timespec_get() support... */
|
|
#elif (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) /* C11 */) \
|
|
&& defined(TIME_UTC) && !defined(__ANDROID__)
|
|
|
|
#include "libc/calls/calls.h"
|
|
#include "libc/calls/termios.h"
|
|
#include "libc/fmt/conv.h"
|
|
#include "libc/limits.h"
|
|
#include "libc/mem/alg.h"
|
|
#include "libc/mem/alloca.h"
|
|
#include "libc/mem/mem.h"
|
|
#include "libc/runtime/runtime.h"
|
|
#include "libc/stdio/dprintf.h"
|
|
#include "libc/stdio/rand.h"
|
|
#include "libc/temp.h"
|
|
#include "libc/str/str.h"
|
|
#include "libc/sysv/consts/exit.h"
|
|
#include "third_party/getopt/getopt.internal.h"
|
|
#include "third_party/musl/crypt.h"
|
|
#include "third_party/musl/rand48.h" /* abort */
|
|
#include "libc/calls/calls.h"
|
|
#include "libc/calls/weirdtypes.h"
|
|
#include "libc/stdio/dprintf.h"
|
|
#include "libc/stdio/stdio.h"
|
|
#include "libc/temp.h"
|
|
#include "third_party/musl/tempnam.h" /* perror */
|
|
|
|
UTIL_time_t UTIL_getTime(void)
|
|
{
|
|
/* time must be initialized, othersize it may fail msan test.
|
|
* No good reason, likely a limitation of timespec_get() for some target */
|
|
struct timespec time = { 0, 0 };
|
|
if (timespec_get(&time, TIME_UTC) != TIME_UTC) {
|
|
perror("timefn::timespec_get(TIME_UTC)");
|
|
abort();
|
|
}
|
|
{ UTIL_time_t r;
|
|
r.t = (PTime)time.tv_sec * 1000000000ULL + (PTime)time.tv_nsec;
|
|
return r;
|
|
}
|
|
}
|
|
|
|
|
|
#else /* relies on standard C90 (note : clock_t produces wrong measurements for multi-threaded workloads) */
|
|
|
|
UTIL_time_t UTIL_getTime(void)
|
|
{
|
|
UTIL_time_t r;
|
|
r.t = (PTime)clock() * 1000000000ULL / CLOCKS_PER_SEC;
|
|
return r;
|
|
}
|
|
|
|
#define TIME_MT_MEASUREMENTS_NOT_SUPPORTED
|
|
|
|
#endif
|
|
|
|
/* ==== Common functions, valid for all time API ==== */
|
|
|
|
PTime UTIL_getSpanTimeNano(UTIL_time_t clockStart, UTIL_time_t clockEnd)
|
|
{
|
|
return clockEnd.t - clockStart.t;
|
|
}
|
|
|
|
PTime UTIL_getSpanTimeMicro(UTIL_time_t begin, UTIL_time_t end)
|
|
{
|
|
return UTIL_getSpanTimeNano(begin, end) / 1000ULL;
|
|
}
|
|
|
|
PTime UTIL_clockSpanMicro(UTIL_time_t clockStart )
|
|
{
|
|
UTIL_time_t const clockEnd = UTIL_getTime();
|
|
return UTIL_getSpanTimeMicro(clockStart, clockEnd);
|
|
}
|
|
|
|
PTime UTIL_clockSpanNano(UTIL_time_t clockStart )
|
|
{
|
|
UTIL_time_t const clockEnd = UTIL_getTime();
|
|
return UTIL_getSpanTimeNano(clockStart, clockEnd);
|
|
}
|
|
|
|
void UTIL_waitForNextTick(void)
|
|
{
|
|
UTIL_time_t const clockStart = UTIL_getTime();
|
|
UTIL_time_t clockEnd;
|
|
do {
|
|
clockEnd = UTIL_getTime();
|
|
} while (UTIL_getSpanTimeNano(clockStart, clockEnd) == 0);
|
|
}
|
|
|
|
int UTIL_support_MT_measurements(void)
|
|
{
|
|
# if defined(TIME_MT_MEASUREMENTS_NOT_SUPPORTED)
|
|
return 0;
|
|
# else
|
|
return 1;
|
|
# endif
|
|
}
|