+
+
+ $pg = System::which('pgrep');
+ if ($pg == '') {
+ echo '<!-- install pgrep -->';
+ return false;
+ }
+
+ $cmd = "$pg roojspacker";
+ $res = `$cmd`;
+ $out = empty($res) ? '' : trim($res);
+ if (strlen($out) > 0) {
+ echo '<!-- onther process is compiling compile. -->';
+ return false;
+ }
+
+