dbqueries = 0;
$PERF->logwrites = 0;
if (function_exists('microtime')) {
$PERF->starttime = microtime();
}
if (function_exists('memory_get_usage')) {
$PERF->startmemory = memory_get_usage();
}
if (function_exists('posix_times')) {
$PERF->startposixtimes = posix_times();
}
if (function_exists('apd_set_pprof_trace')) {
// APD profiling
if ($USER->id > 0 && $CFG->perfdebug >= 15) {
$tempdir = $CFG->dataroot . '/temp/profile/' . $USER->id;
mkdir($tempdir);
apd_set_pprof_trace($tempdir);
$PERF->profiling = true;
}
}
}
/**
* Function to raise the memory limit to a new value.
* Will respect the memory limit if it is higher, thus allowing
* settings in php.ini, apache conf or command line switches
* to override it
*
* The memory limit should be expressed with a string (eg:'64M')
*
* @param string $newlimit the new memory limit
* @return bool
*/
function raise_memory_limit ($newlimit) {
if (empty($newlimit)) {
return false;
}
$cur = @ini_get('memory_limit');
if (empty($cur)) {
// if php is compiled without --enable-memory-limits
// apparently memory_limit is set to ''
$cur=0;
} else {
if ($cur == -1){
return true; // unlimited mem!
}
$cur = get_real_size($cur);
}
$new = get_real_size($newlimit);
if ($new > $cur) {
ini_set('memory_limit', $newlimit);
return true;
}
return false;
}
/**
* Converts numbers like 10M into bytes.
*
* @param mixed $size The size to be converted
* @return mixed
*/
function get_real_size($size=0) {
if (!$size) {
return 0;
}
$scan['MB'] = 1048576;
$scan['Mb'] = 1048576;
$scan['M'] = 1048576;
$scan['m'] = 1048576;
$scan['KB'] = 1024;
$scan['Kb'] = 1024;
$scan['K'] = 1024;
$scan['k'] = 1024;
while (list($key) = each($scan)) {
if ((strlen($size)>strlen($key))&&(substr($size, strlen($size) - strlen($key))==$key)) {
$size = substr($size, 0, strlen($size) - strlen($key)) * $scan[$key];
break;
}
}
return $size;
}
/**
* Create a directory.
*
* @uses $CFG
* @param string $directory a string of directory names under $CFG->dataroot eg stuff/assignment/1
* param bool $shownotices If true then notification messages will be printed out on error.
* @return string|false Returns full path to directory if successful, false if not
*/
function make_upload_directory($directory, $shownotices=true) {
global $CFG;
$currdir = $CFG->dataroot;
umask(0000);
if (!file_exists($currdir)) {
if (! mkdir($currdir, $CFG->directorypermissions)) {
if ($shownotices) {
echo 'ERROR: You need to create the directory '.
$currdir .' with web server write access
'."
\n";
}
return false;
}
}
// Make sure a .htaccess file is here, JUST IN CASE the files area is in the open
if (!file_exists($currdir.'/.htaccess')) {
if ($handle = fopen($currdir.'/.htaccess', 'w')) { // For safety
@fwrite($handle, "deny from all\r\nAllowOverride None\r\n");
@fclose($handle);
}
}
$dirarray = explode('/', $directory);
foreach ($dirarray as $dir) {
$currdir = $currdir .'/'. $dir;
if (! file_exists($currdir)) {
if (! mkdir($currdir, $CFG->directorypermissions)) {
if ($shownotices) {
echo 'ERROR: Could not find or create a directory ('.
$currdir .')
'."
\n";
}
return false;
}
//@chmod($currdir, $CFG->directorypermissions); // Just in case mkdir didn't do it
}
}
return $currdir;
}
function init_memcached() {
global $CFG, $MCACHE;
include_once($CFG->libdir . '/memcached.class.php');
$MCACHE = new memcached;
if ($MCACHE->status()) {
return true;
}
unset($MCACHE);
return false;
}
function init_eaccelerator() {
global $CFG, $MCACHE;
include_once($CFG->libdir . '/eaccelerator.class.php');
$MCACHE = new eaccelerator;
if ($MCACHE->status()) {
return true;
}
unset($MCACHE);
return false;
}
?>