informatique:php:shared_memory:essais02
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"> <title>Shared Memory - Essais02</title> <style type="text/css"> </style> </head> <body> <h1>Shared Memory - Essais02</h1> <ul> <li><a href="essais02.php?test=SEARCHMAXMEM">SEARCHMAXMEM</a></li> </ul> <?php error_reporting(-1); $action = (isset($_GET['test']) && preg_match('/[a-z]{1,20}/i',$_GET['test']) ) ? $_GET['test'] : null ; switch($action) { case 'SEARCHMAXMEM': action_searchmaxmem(); break; } function getShmKey() { return ftok(__FILE__, 'A' ); } function action_searchmaxmem() { echo 'SEARCHMAXMEM:'; echo '<pre>'; $SHM_KEY = getShmKey(); $size = 1024*1024 ; for( $i=0; $i<60; $i++) { $size=intval($size); if( $size==0 ) break; $data = shm_attach( $SHM_KEY, $size, 0600); if( $data == null || $data === FALSE) { echo 'FAILED for size='.formatBytesSize($size)."\n"; break; } else { echo 'OK for size='.formatBytesSize($size)."\n"; shm_remove($data); shm_detach($data); } $size += 1024*1024 ; } echo '</pre>'; } /** * @parame int $sizeInBytes * @return string */ function formatBytesSize( $sizeInBytes, $afterColon=2) { // less than 1kB if($sizeInBytes < 1024) { return $sizeInBytes . ' B'; } // between 1kB and 1MB if ($sizeInBytes >= 1024 && $sizeInBytes < 1048576) { return number_format( $sizeInBytes / 1024, $afterColon) . ' KB'; } // between 1MB and 1GB if ($sizeInBytes >= 1048576 && $sizeInBytes < 1073741824) { return number_format( $sizeInBytes / 1048576, $afterColon) . ' MB'; } // more than 1GB return number_format( $sizeInBytes / 1073741824, $afterColon) . ' GB'; } ?> </body> </html>
informatique/php/shared_memory/essais02.txt · Dernière modification : 19/05/2012 00:18 de 127.0.0.1