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The `<time.h>` header file is part of the standard C89 headers [1] and on current systems can be included unconditionally. The conditional include based on Windows is there so the win32/time.h can be included on other places when needed. Refs: [1] https://port70.net/~nsz/c/c89/c89-draft.html#4.1.2 [2] https://git.savannah.gnu.org/cgit/autoconf.git/tree/lib/autoconf/headers.m4
108 lines
3.7 KiB
C
108 lines
3.7 KiB
C
/*
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+----------------------------------------------------------------------+
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| Copyright (c) The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| https://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Author: Niklas Keller <kelunik@php.net> |
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| Author: Anatol Belski <ab@php.net> |
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+----------------------------------------------------------------------+
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*/
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#ifndef ZEND_HRTIME_H
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#define ZEND_HRTIME_H
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#include "zend_portability.h"
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#include "zend_types.h"
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#ifndef PHP_WIN32
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# include <time.h>
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#endif
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/* This file reuses code parts from the cross-platform timer library
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Public Domain - 2011 Mattias Jansson / Rampant Pixels */
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#define ZEND_HRTIME_PLATFORM_POSIX 0
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#define ZEND_HRTIME_PLATFORM_WINDOWS 0
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#define ZEND_HRTIME_PLATFORM_APPLE 0
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#define ZEND_HRTIME_PLATFORM_HPUX 0
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#define ZEND_HRTIME_PLATFORM_AIX 0
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#if defined(_POSIX_TIMERS) && ((_POSIX_TIMERS > 0) || defined(__OpenBSD__)) && defined(_POSIX_MONOTONIC_CLOCK) && defined(CLOCK_MONOTONIC)
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# undef ZEND_HRTIME_PLATFORM_POSIX
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# define ZEND_HRTIME_PLATFORM_POSIX 1
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#elif defined(_WIN32) || defined(_WIN64)
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# undef ZEND_HRTIME_PLATFORM_WINDOWS
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# define ZEND_HRTIME_PLATFORM_WINDOWS 1
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#elif defined(__APPLE__)
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# undef ZEND_HRTIME_PLATFORM_APPLE
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# define ZEND_HRTIME_PLATFORM_APPLE 1
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#elif (defined(__hpux) || defined(hpux)) || ((defined(__sun__) || defined(__sun) || defined(sun)) && (defined(__SVR4) || defined(__svr4__)))
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# undef ZEND_HRTIME_PLATFORM_HPUX
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# define ZEND_HRTIME_PLATFORM_HPUX 1
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#elif defined(_AIX)
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# undef ZEND_HRTIME_PLATFORM_AIX
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# define ZEND_HRTIME_PLATFORM_AIX 1
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#endif
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#define ZEND_HRTIME_AVAILABLE (ZEND_HRTIME_PLATFORM_POSIX || ZEND_HRTIME_PLATFORM_WINDOWS || ZEND_HRTIME_PLATFORM_APPLE || ZEND_HRTIME_PLATFORM_HPUX || ZEND_HRTIME_PLATFORM_AIX)
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BEGIN_EXTERN_C()
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#if ZEND_HRTIME_PLATFORM_WINDOWS
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extern double zend_hrtime_timer_scale;
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#elif ZEND_HRTIME_PLATFORM_APPLE
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# include <mach/mach_time.h>
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# include <string.h>
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extern mach_timebase_info_data_t zend_hrtime_timerlib_info;
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#endif
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#define ZEND_NANO_IN_SEC UINT64_C(1000000000)
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typedef uint64_t zend_hrtime_t;
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void zend_startup_hrtime(void);
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static zend_always_inline zend_hrtime_t zend_hrtime(void)
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{
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#if ZEND_HRTIME_PLATFORM_WINDOWS
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LARGE_INTEGER lt = {0};
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QueryPerformanceCounter(<);
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return (zend_hrtime_t)((zend_hrtime_t)lt.QuadPart * zend_hrtime_timer_scale);
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#elif ZEND_HRTIME_PLATFORM_APPLE
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return (zend_hrtime_t)mach_absolute_time() * zend_hrtime_timerlib_info.numer / zend_hrtime_timerlib_info.denom;
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#elif ZEND_HRTIME_PLATFORM_POSIX
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struct timespec ts = { .tv_sec = 0, .tv_nsec = 0 };
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if (EXPECTED(0 == clock_gettime(CLOCK_MONOTONIC, &ts))) {
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return ((zend_hrtime_t) ts.tv_sec * (zend_hrtime_t)ZEND_NANO_IN_SEC) + ts.tv_nsec;
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}
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return 0;
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#elif ZEND_HRTIME_PLATFORM_HPUX
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return (zend_hrtime_t) gethrtime();
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#elif ZEND_HRTIME_PLATFORM_AIX
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timebasestruct_t t;
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read_wall_time(&t, TIMEBASE_SZ);
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time_base_to_time(&t, TIMEBASE_SZ);
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return (zend_hrtime_t) t.tb_high * (zend_hrtime_t)NANO_IN_SEC + t.tb_low;
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#else
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return 0;
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#endif
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}
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END_EXTERN_C()
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#endif /* ZEND_HRTIME_H */
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