<?php
error_reporting(E_ALL | E_STRICT);
$profilings=array(microtime(true));
$filename='/shm/mutex_kv-lock2.lock';
$fo =fopen($filename, 'w');
$result=flock($fo, LOCK_EX | LOCK_NB, $ref);
$r1 =flock($fo, LOCK_UN);
$r2 =fclose($fo);
var_dump($fo,$result,$r1,$r2,$ref);echo "\r\n";
$fo =fopen($filename, 'w+');
$r0 =flock($fo, LOCK_EX, $ref);
$r4 =fwrite($fo, (float)$_SERVER['REQUEST_TIME_FLOAT']."\n");
$r1 =flock($fo, LOCK_UN);
$r2 =fclose($fo);
var_dump($fo,$r0,$r4,$r1,$r2,$ref);echo "\r\n\r\n";
unset($fo, $r1, $r2, $r0);
sleep(2);
$profilings[]=microtime(true);
echo ($profilings[1]-$profilings[0])."\r\n".(float)$_SERVER['REQUEST_TIME_FLOAT']."\r\n".$profilings[0]."\r\n";
echo 'pid='.posix_getpid();
?>
preferences:
63.87 ms | 402 KiB | 5 Q