/**
* Return the used process memory, in bytes.
* Enable the section which will work for you. They are very slow.
* Special quirks for Windows: Requires cygwin.
*/
function getMemoryUsage()
{
//if (!(DEBUG & _DEBUG_VERBOSE)) return;
if (function_exists('memory_get_usage') and memory_get_usage()) {
return memory_get_usage();
} elseif (function_exists('getrusage') and $u = @getrusage() and !empty($u['ru_maxrss'])) {
$mem = $u['ru_maxrss'];
} elseif (substr(PHP_OS, 0, 3) == 'WIN') {
// may require a newer cygwin
// what we want is the process memory only: apache or php (if CGI)
$pid = getmypid();
$memstr = '';
// win32_ps_stat_proc, win32_ps_stat_mem
if (function_exists('win32_ps_list_procs')) {
$info = win32_ps_stat_proc($pid);
$memstr = $info['mem']['working_set_size'];
} elseif (0) {
// This works only if it's a cygwin process (apache or php).
// Requires a newer cygwin
$memstr = exec("cat /proc/{$pid}/statm |cut -f1");
// if it's native windows use something like this:
// (requires pslist from sysinternals.com, grep, sed and perl)
//$memstr = exec("pslist $pid|grep -A1 Mem|sed 1d|perl -ane\"print \$"."F[5]\"");
}
return (int) trim($memstr);
} elseif (1) {
$pid = getmypid();
//%MEM: Percentage of total memory in use by this process
//VSZ: Total virtual memory size, in 1K blocks.
//RSS: Real Set Size, the actual amount of physical memory allocated to this process.
//CPU time used by process since it started.
//echo "%",`ps -o%mem,vsz,rss,time -p $pid|sed 1d`,"\n";
$memstr = exec("ps -orss -p {$pid}|sed 1d");
return (int) trim($memstr);
}
}
function processExists($pn_proc_id)
{
if (!$this->canDetectProcesses()) {
return null;
}
switch (caGetOSFamily()) {
case OS_WIN32:
$va_proc_info = win32_ps_stat_proc($pn_proc_id);
return is_array($va_proc_info);
break;
default:
return posix_kill($pn_proc_id, 0) ? true : false;
break;
}
}
