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|
/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2018 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> |
+----------------------------------------------------------------------+
*/
#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_packed(Z_ARRVAL_P(return_value));
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
*/
|
