Цитата:
|
А в PHP функция microtime() скорее всего использует вышеуказанную функцию WinAPI.
|
не факт
php изначально проектировался под unix системы, а там API другой.
Код:
/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2006 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: Paul Panotzki - Bunyip Information Systems |
+----------------------------------------------------------------------+
*/
/* $Id: microtime.c,v 1.53.2.2 2006/01/01 12:50:15 sniper Exp $ */
#include "php.h"
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef PHP_WIN32
#include "win32/time.h"
#elif defined(NETWARE)
#include <sys/timeval.h>
#include <sys/time.h>
#else
#include <sys/time.h>
#endif
#ifdef HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include "microtime.h"
#include "ext/date/php_date.h"
#define NUL '\0'
#define MICRO_IN_SEC 1000000.00
#define SEC_IN_MIN 60
#ifdef HAVE_GETTIMEOFDAY
static void _php_gettimeofday(INTERNAL_FUNCTION_PARAMETERS, int mode)
{
zend_bool get_as_float = 0;
struct timeval tp = {0};
struct timezone tz = {0};
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|b", &get_as_float) == FAILURE) {
return;
}
if (gettimeofday(&tp, &tz)) {
RETURN_FALSE;
}
if (get_as_float) {
RETURN_DOUBLE((double)(tp.tv_sec + tp.tv_usec / MICRO_IN_SEC));
}
if (mode) {
timelib_time_offset *offset;
offset = timelib_get_time_zone_info(tp.tv_sec, get_timezone_info(TSRMLS_C));
array_init(return_value);
add_assoc_long(return_value, "sec", tp.tv_sec);
add_assoc_long(return_value, "usec", tp.tv_usec);
add_assoc_long(return_value, "minuteswest", -offset->offset / SEC_IN_MIN);
add_assoc_long(return_value, "dsttime", offset->is_dst);
timelib_time_offset_dtor(offset);
} else {
char ret[100];
snprintf(ret, 100, "%.8f %ld", tp.tv_usec / MICRO_IN_SEC, tp.tv_sec);
RETURN_STRING(ret, 1);
}
}
/* {{{ proto mixed microtime([bool get_as_float])
Returns either a string or a float containing the current time in seconds and microseconds */
PHP_FUNCTION(microtime)
{
_php_gettimeofday(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */
/* {{{ proto array gettimeofday([bool get_as_float])
Returns the current time as array */
PHP_FUNCTION(gettimeofday)
{
_php_gettimeofday(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}
#endif
/* }}} */
#ifdef HAVE_GETRUSAGE
/* {{{ proto array getrusage([int who])
Returns an array of usage statistics */
PHP_FUNCTION(getrusage)
{
struct rusage usg;
long pwho = 0;
int who = RUSAGE_SELF;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|l", &pwho) != FAILURE && pwho == 1) {
who = RUSAGE_CHILDREN;
}
memset(&usg, 0, sizeof(struct rusage));
if (getrusage(who, &usg) == -1) {
RETURN_FALSE;
}
array_init(return_value);
#define PHP_RUSAGE_PARA(a) \
add_assoc_long(return_value, #a, usg.a)
#if !defined( _OSD_POSIX) && !defined(__BEOS__) /* BS2000 has only a few fields in the rusage struct */
PHP_RUSAGE_PARA(ru_oublock);
PHP_RUSAGE_PARA(ru_inblock);
PHP_RUSAGE_PARA(ru_msgsnd);
PHP_RUSAGE_PARA(ru_msgrcv);
PHP_RUSAGE_PARA(ru_maxrss);
PHP_RUSAGE_PARA(ru_ixrss);
PHP_RUSAGE_PARA(ru_idrss);
PHP_RUSAGE_PARA(ru_minflt);
PHP_RUSAGE_PARA(ru_majflt);
PHP_RUSAGE_PARA(ru_nsignals);
PHP_RUSAGE_PARA(ru_nvcsw);
PHP_RUSAGE_PARA(ru_nivcsw);
PHP_RUSAGE_PARA(ru_nswap);
#endif /*_OSD_POSIX*/
PHP_RUSAGE_PARA(ru_utime.tv_usec);
PHP_RUSAGE_PARA(ru_utime.tv_sec);
PHP_RUSAGE_PARA(ru_stime.tv_usec);
PHP_RUSAGE_PARA(ru_stime.tv_sec);
#undef PHP_RUSAGE_PARA
}
#endif /* HAVE_GETRUSAGE */
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/
GetTickTime не используется.
