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204 lines
5.2 KiB
C
204 lines
5.2 KiB
C
/*
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+----------------------------------------------------------------------+
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| PHP Version 7 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997-2018 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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| http://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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#include "php.h"
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#include "hrtime.h"
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/* {{{ */
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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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#if PHP_HRTIME_PLATFORM_POSIX
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# include <unistd.h>
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# include <time.h>
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# include <string.h>
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#elif PHP_HRTIME_PLATFORM_WINDOWS
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# define WIN32_LEAN_AND_MEAN
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static double _timer_scale = .0;
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#elif PHP_HRTIME_PLATFORM_APPLE
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# include <mach/mach_time.h>
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# include <string.h>
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static mach_timebase_info_data_t _timerlib_info;
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#elif PHP_HRTIME_PLATFORM_HPUX
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# include <sys/time.h>
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#elif PHP_HRTIME_PLATFORM_AIX
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# include <sys/time.h>
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# include <sys/systemcfg.h>
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#endif
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#define NANO_IN_SEC 1000000000
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/* }}} */
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static int _timer_init()
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{/*{{{*/
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#if PHP_HRTIME_PLATFORM_WINDOWS
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LARGE_INTEGER tf = {0};
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if (!QueryPerformanceFrequency(&tf) || 0 == tf.QuadPart) {
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return -1;
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}
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_timer_scale = (double)NANO_IN_SEC / (php_hrtime_t)tf.QuadPart;
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#elif PHP_HRTIME_PLATFORM_APPLE
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if (mach_timebase_info(&_timerlib_info)) {
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return -1;
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}
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#elif PHP_HRTIME_PLATFORM_POSIX
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#if !_POSIX_MONOTONIC_CLOCK
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#ifdef _SC_MONOTONIC_CLOCK
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if (0 >= sysconf(_SC_MONOTONIC_CLOCK)) {
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return -1;
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}
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#endif
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#endif
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#elif PHP_HRTIME_PLATFORM_HPUX
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/* pass */
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#elif PHP_HRTIME_PLATFORM_AIX
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/* pass */
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#else
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/* Timer unavailable. */
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return -1;
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#endif
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return 0;
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}/*}}}*/
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/* {{{ */
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PHP_MINIT_FUNCTION(hrtime)
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{
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if (0 > _timer_init()) {
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php_error_docref(NULL, E_WARNING, "Failed to initialize high-resolution timer");
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return FAILURE;
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}
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return SUCCESS;
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}
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/* }}} */
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static zend_always_inline php_hrtime_t _timer_current(void)
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{/*{{{*/
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#if PHP_HRTIME_PLATFORM_WINDOWS
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LARGE_INTEGER lt = {0};
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QueryPerformanceCounter(<);
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return (php_hrtime_t)((php_hrtime_t)lt.QuadPart * _timer_scale);
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#elif PHP_HRTIME_PLATFORM_APPLE
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return (php_hrtime_t)mach_absolute_time() * _timerlib_info.numer / _timerlib_info.denom;
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#elif PHP_HRTIME_PLATFORM_POSIX
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struct timespec ts = { .tv_sec = 0, .tv_nsec = 0 };
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if (0 == clock_gettime(CLOCK_MONOTONIC, &ts)) {
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return ((php_hrtime_t) ts.tv_sec * (php_hrtime_t)NANO_IN_SEC) + ts.tv_nsec;
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}
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return 0;
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#elif PHP_HRTIME_PLATFORM_HPUX
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return (php_hrtime_t) gethrtime();
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#elif PHP_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 (php_hrtime_t) t.tb_high * (php_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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#if ZEND_ENABLE_ZVAL_LONG64
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#define PHP_RETURN_HRTIME(t) RETURN_LONG((zend_long)t)
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#else
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#ifdef _WIN32
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# define HRTIME_U64A(i, s, len) _ui64toa_s(i, s, len, 10)
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#else
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# define HRTIME_U64A(i, s, len) \
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do { \
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int st = snprintf(s, len, "%llu", i); \
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s[st] = '\0'; \
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} while (0)
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#endif
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#define PHP_RETURN_HRTIME(t) do { \
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char _a[ZEND_LTOA_BUF_LEN]; \
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double _d; \
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HRTIME_U64A(t, _a, ZEND_LTOA_BUF_LEN); \
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_d = zend_strtod(_a, NULL); \
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RETURN_DOUBLE(_d); \
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} while (0)
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#endif
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/* {{{ proto mixed hrtime([bool get_as_number = false])
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Returns an array of integers in form [seconds, nanoseconds] counted
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from an arbitrary point in time. If an optional boolean argument is
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passed, returns an integer on 64-bit platforms or float on 32-bit
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containing the current high-resolution time in nanoseconds. The
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delivered timestamp is monotonic and can not be adjusted. */
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PHP_FUNCTION(hrtime)
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{
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#if HRTIME_AVAILABLE
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zend_bool get_as_num = 0;
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php_hrtime_t t = _timer_current();
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ZEND_PARSE_PARAMETERS_START(0, 1)
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Z_PARAM_OPTIONAL
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Z_PARAM_BOOL(get_as_num)
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ZEND_PARSE_PARAMETERS_END();
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if (UNEXPECTED(get_as_num)) {
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PHP_RETURN_HRTIME(t);
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} else {
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array_init_size(return_value, 2);
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zend_hash_real_init_packed(Z_ARRVAL_P(return_value));
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add_next_index_long(return_value, (zend_long)(t / (php_hrtime_t)NANO_IN_SEC));
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add_next_index_long(return_value, (zend_long)(t % (php_hrtime_t)NANO_IN_SEC));
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}
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#else
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RETURN_FALSE
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#endif
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}
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/* }}} */
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PHPAPI php_hrtime_t php_hrtime_current(void)
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{/*{{{*/
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return _timer_current();
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}/*}}}*/
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* End:
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* vim600: sw=4 ts=4 fdm=marker
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* vim<600: sw=4 ts=4
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*/
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