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Shared Memory - Essais02
';
$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 '';
}
/**
* @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';
}
?>