/**
* Get a process by process ID
*
* @param int pid process id
* @param string exe
* @return lang.Process
* @throws lang.IllegalStateException
*/
public static function getProcessById($pid, $exe = NULL)
{
$self = new self();
$self->status = array('pid' => $pid, 'running' => TRUE, 'exe' => $exe, 'command' => '', 'arguments' => NULL, 'owner' => FALSE);
// Determine executable and command line:
// * On Windows, use Windows Management Instrumentation API - see
// http://en.wikipedia.org/wiki/Windows_Management_Instrumentation
//
// * On systems with a /proc filesystem, use information from /proc/self
// See http://en.wikipedia.org/wiki/Procfs. Before relying on it,
// also check that /proc is not just an empty directory; this assumes
// that process 1 always exists - which usually is `init`.
//
// * Fall back to use the PHP_BINARY (#54514) constant and finally the "_"
// environment variable for the executable and /bin/ps to retrieve the
// command line (please note unfortunately any quote signs have been
// lost and it can thus be only used for display purposes)
if (strncasecmp(PHP_OS, 'Win', 3) === 0) {
try {
$c = new com('winmgmts:');
$p = $c->get('//./root/cimv2:Win32_Process.Handle="' . $pid . '"');
$self->status['exe'] = $p->executablePath;
$self->status['command'] = $p->commandLine;
} catch (Exception $e) {
throw new IllegalStateException('Cannot find executable: ' . $e->getMessage());
}
} else {
if (is_dir('/proc/1')) {
if (!file_exists($proc = '/proc/' . $pid)) {
throw new IllegalStateException('Cannot find executable in /proc');
}
if (defined('PHP_BINARY')) {
$self->status['exe'] = PHP_BINARY;
} else {
do {
foreach (array('/exe', '/file') as $alt) {
if (!file_exists($proc . $alt)) {
continue;
}
$self->status['exe'] = readlink($proc . $alt);
break 2;
}
throw new IllegalStateException('Cannot find executable in ' . $proc);
} while (0);
}
$self->status['command'] = strtr(file_get_contents($proc . '/cmdline'), "", ' ');
} else {
try {
if (defined('PHP_BINARY')) {
$self->status['exe'] = PHP_BINARY;
} else {
if ($exe) {
$self->status['exe'] = self::resolve($exe);
} else {
if ($_ = getenv('_')) {
$self->status['exe'] = self::resolve($_);
} else {
throw new IllegalStateException('Cannot find executable');
}
}
}
$self->status['command'] = exec('ps -ww -p ' . $pid . ' -ocommand 2>&1', $out, $exit);
if (0 !== $exit) {
throw new IllegalStateException('Cannot find executable: ' . implode('', $out));
}
} catch (IOException $e) {
throw new IllegalStateException($e->getMessage());
}
}
}
$self->in = xp::null();
$self->out = xp::null();
$self->err = xp::null();
return $self;
}
