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Implement high resolution monotonic timer function hrtime()
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339 additions
and 10 deletions.
- +11 −0 UPGRADING
- +4 −0 UPGRADING.INTERNALS
- +9 −0 ext/standard/basic_functions.c
- +7 −7 ext/standard/config.m4
- +2 −3 ext/standard/config.w32
- +206 −0 ext/standard/hrtime.c
- +58 −0 ext/standard/hrtime.h
- +1 −0 ext/standard/php_standard.h
- +26 −0 ext/standard/tests/hrtime/hrtime.phpt
- +15 −0 ext/standard/tests/hrtime/hrtime_array.phpt
| @@ -0,0 +1,206 @@ | ||
| /* | ||
| +----------------------------------------------------------------------+ | ||
| | PHP Version 7 | | ||
| +----------------------------------------------------------------------+ | ||
| | Copyright (c) 1997-2017 The PHP Group | | ||
| +----------------------------------------------------------------------+ | ||
| | This source file is subject to version 3.01 of the PHP license, | | ||
| | that is bundled with this package in the file LICENSE, and is | | ||
| | available through the world-wide-web at the following url: | | ||
| | http://www.php.net/license/3_01.txt | | ||
| | If you did not receive a copy of the PHP license and are unable to | | ||
| | obtain it through the world-wide-web, please send a note to | | ||
| | license@php.net so we can mail you a copy immediately. | | ||
| +----------------------------------------------------------------------+ | ||
| | Author: Niklas Keller <kelunik@php.net> | | ||
| | Author: Anatol Belski <ab@php.net> | | ||
| +----------------------------------------------------------------------+ | ||
| */ | ||
| /* $Id$ */ | ||
| #include "php.h" | ||
| #include "hrtime.h" | ||
| /* {{{ */ | ||
| /* This file reuses code parts from the cross-platform timer library | ||
| Public Domain - 2011 Mattias Jansson / Rampant Pixels */ | ||
| #if PHP_HRTIME_PLATFORM_POSIX | ||
| # include <unistd.h> | ||
| # include <time.h> | ||
| # include <string.h> | ||
| #elif PHP_HRTIME_PLATFORM_WINDOWS | ||
| # define WIN32_LEAN_AND_MEAN | ||
| static double _timer_scale = .0; | ||
| #elif PHP_HRTIME_PLATFORM_APPLE | ||
| # include <mach/mach_time.h> | ||
| # include <string.h> | ||
| static mach_timebase_info_data_t _timerlib_info; | ||
| #elif PHP_HRTIME_PLATFORM_HPUX | ||
| # include <sys/time.h> | ||
| #elif PHP_HRTIME_PLATFORM_AIX | ||
| # include <sys/time.h> | ||
| # include <sys/systemcfg.h> | ||
| #endif | ||
| #define NANO_IN_SEC 1000000000 | ||
| /* }}} */ | ||
| static int _timer_init() | ||
| {/*{{{*/ | ||
| #if PHP_HRTIME_PLATFORM_WINDOWS | ||
| LARGE_INTEGER tf = {0}; | ||
| if (!QueryPerformanceFrequency(&tf) || 0 == tf.QuadPart) { | ||
| return -1; | ||
| } | ||
| _timer_scale = (double)NANO_IN_SEC / (php_hrtime_t)tf.QuadPart; | ||
| #elif PHP_HRTIME_PLATFORM_APPLE | ||
| if (mach_timebase_info(&_timerlib_info)) { | ||
| return -1; | ||
| } | ||
| #elif PHP_HRTIME_PLATFORM_POSIX | ||
| #if !_POSIX_MONOTONIC_CLOCK | ||
| #ifdef _SC_MONOTONIC_CLOCK | ||
| if (0 >= sysconf(_SC_MONOTONIC_CLOCK)) { | ||
| return -1; | ||
| } | ||
| #endif | ||
| #endif | ||
| #elif PHP_HRTIME_PLATFORM_HPUX | ||
| /* pass */ | ||
| #elif PHP_HRTIME_PLATFORM_AIX | ||
| /* pass */ | ||
| #else | ||
| /* Timer unavailable. */ | ||
| return -1; | ||
| #endif | ||
| return 0; | ||
| }/*}}}*/ | ||
| /* {{{ */ | ||
| PHP_MINIT_FUNCTION(hrtime) | ||
| { | ||
| if (0 > _timer_init()) { | ||
| php_error_docref(NULL, E_WARNING, "Failed to initialize high-resolution timer"); | ||
| return FAILURE; | ||
| } | ||
| return SUCCESS; | ||
| } | ||
| /* }}} */ | ||
| static zend_always_inline php_hrtime_t _timer_current(void) | ||
| {/*{{{*/ | ||
| #if PHP_HRTIME_PLATFORM_WINDOWS | ||
| LARGE_INTEGER lt = {0}; | ||
| QueryPerformanceCounter(<); | ||
| return (php_hrtime_t)((php_hrtime_t)lt.QuadPart * _timer_scale); | ||
| #elif PHP_HRTIME_PLATFORM_APPLE | ||
| return (php_hrtime_t)mach_absolute_time() * _timerlib_info.numer / _timerlib_info.denom; | ||
| #elif PHP_HRTIME_PLATFORM_POSIX | ||
| struct timespec ts = { .tv_sec = 0, .tv_nsec = 0 }; | ||
| if (0 == clock_gettime(CLOCK_MONOTONIC, &ts)) { | ||
| return ((php_hrtime_t) ts.tv_sec * (php_hrtime_t)NANO_IN_SEC) + ts.tv_nsec; | ||
| } | ||
| return 0; | ||
| #elif PHP_HRTIME_PLATFORM_HPUX | ||
| return (php_hrtime_t) gethrtime(); | ||
| #elif PHP_HRTIME_PLATFORM_AIX | ||
| timebasestruct_t t; | ||
| read_wall_time(&t, TIMEBASE_SZ); | ||
| time_base_to_time(&t, TIMEBASE_SZ); | ||
| return (php_hrtime_t) t.tb_high * (php_hrtime_t)NANO_IN_SEC + t.tb_low; | ||
| #else | ||
| return 0; | ||
| #endif | ||
| }/*}}}*/ | ||
| #if ZEND_ENABLE_ZVAL_LONG64 | ||
| #define PHP_RETURN_HRTIME(t) RETURN_LONG((zend_long)t) | ||
| #else | ||
| #ifdef _WIN32 | ||
| # define HRTIME_U64A(i, s, len) _ui64toa_s(i, s, len, 10) | ||
| #else | ||
| # define HRTIME_U64A(i, s, len) \ | ||
| do { \ | ||
| int st = snprintf(s, len, "%llu", i); \ | ||
| s[st] = '\0'; \ | ||
| } while (0) | ||
| #endif | ||
| #define PHP_RETURN_HRTIME(t) do { \ | ||
| char _a[ZEND_LTOA_BUF_LEN]; \ | ||
| double _d; \ | ||
| HRTIME_U64A(t, _a, ZEND_LTOA_BUF_LEN); \ | ||
| _d = zend_strtod(_a, NULL); \ | ||
| RETURN_DOUBLE(_d); \ | ||
| } while (0) | ||
| #endif | ||
| /* {{{ proto mixed hrtime([bool get_as_number = false]) | ||
| Returns an array of integers in form [seconds, nanoseconds] counted | ||
| from an arbitrary point in time. If an optional boolean argument is | ||
| passed, returns an integer on 64-bit platforms or float on 32-bit | ||
| containing the current high-resolution time in nanoseconds. The | ||
| delivered timestamp is monotonic and can not be adjusted. */ | ||
| PHP_FUNCTION(hrtime) | ||
| { | ||
| #if HRTIME_AVAILABLE | ||
| zend_bool get_as_num = 0; | ||
| php_hrtime_t t = _timer_current(); | ||
| ZEND_PARSE_PARAMETERS_START(0, 1) | ||
| Z_PARAM_OPTIONAL | ||
| Z_PARAM_BOOL(get_as_num) | ||
| ZEND_PARSE_PARAMETERS_END(); | ||
| if (UNEXPECTED(get_as_num)) { | ||
| PHP_RETURN_HRTIME(t); | ||
| } else { | ||
| array_init_size(return_value, 2); | ||
| zend_hash_real_init(Z_ARRVAL_P(return_value), 1); | ||
| add_next_index_long(return_value, (zend_long)(t / (php_hrtime_t)NANO_IN_SEC)); | ||
| add_next_index_long(return_value, (zend_long)(t % (php_hrtime_t)NANO_IN_SEC)); | ||
| } | ||
| #else | ||
| RETURN_FALSE | ||
| #endif | ||
| } | ||
| /* }}} */ | ||
| PHPAPI php_hrtime_t php_hrtime_current(void) | ||
| {/*{{{*/ | ||
| return _timer_current(); | ||
| }/*}}}*/ | ||
| /* | ||
| * Local variables: | ||
| * tab-width: 4 | ||
| * c-basic-offset: 4 | ||
| * End: | ||
| * vim600: sw=4 ts=4 fdm=marker | ||
| * vim<600: sw=4 ts=4 | ||
| */ | ||
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