usleep() on win32 View as Markdown

We've had working usleep on windows since november 2003 in the PHP 5 branch.
Check out win32/time.c

--Wez.

Hi

Here is a small change to usleep so it will work with win32.
It is very useful for tight while loops when using socket functions
and reduces cpu load from 100% to 0%-2% (on my win2k box) by just
adding usleep(1000); after the while().
(Code snippet was taken from pgsql)

Diff is from php-4.4 cvs

RCS file: /repository/php-src/ext/standard/basic_functions.c,v
retrieving revision 1.543.2.51.2.6
diff -u -w -b -r1.543.2.51.2.6 basic_functions.c
--- basic_functions.c 1 Jan 2006 13:46:57 -0000 1.543.2.51.2.6
+++ basic_functions.c 27 Jan 2006 00:52:10 -0000
@@ -1677,14 +1677,20 @@
Delay for a given number of micro seconds */
PHP_FUNCTION(usleep)
{
-#if HAVE_USLEEP
pval **num;

    if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &num) == FAILURE) {
            WRONG_PARAM_COUNT;
    }
    convert_to_long_ex(num);

+#if HAVE_USLEEP
usleep(Z_LVAL_PP(num));
+#else
+#ifdef PHP_WIN32

•   do {
  

•           SleepEx((Z_LVAL_PP(num) < 500 ? 1 : (Z_LVAL_PP(num) + 500) / 1000), TRUE);
  

•   } while(0);
  

+#endif
#endif
}
/* }}} */

--

Tom