Php/docs/class.evchild
(PECL ev >= 0.2.0)
Introduction
EvChild
watchers trigger when the process receives a
SIGCHLD
in response to some child status changes (most typically when a child dies
or exits). It is permissible to install an
EvChild
watcher after the child has been forked(which implies it might have
already exited), as long as the event loop isn't entered(or is continued
from a watcher), i.e. forking and then immediately registering a watcher
for the child is fine, but forking and registering a watcher a few event
loop iterations later or in the next callback invocation is not.
It is allowed to register EvChild watchers in the default loop only.
Class synopsis
EvChild extends EvWatcher {
public
$pid
public
$rpid
public
$rstatus
/* Inherited properties */
public
$is_active
public
$data
public
$is_pending
public
$priority
/* Methods */
public
__construct
(
int
$pid
,
bool
$trace
,
callable
$callback
[,
mixed
$data
= NULL
[,
int
$priority
= 0
]] )
final
public
static
createStopped
(
int
$pid
,
bool
$trace
,
callable
$callback
[,
mixed
$data
[,
int
$priority
]] ) : object
public
set
(
int
$pid
,
bool
$trace
) : void
/* Inherited methods */
public EvWatcher::clear ( ) : int
abstract public EvWatcher::__construct ( )
public
EvWatcher::feed
(
int
$revents
) : void
public EvWatcher::getLoop ( ) : EvLoop
public
EvWatcher::invoke
(
int
$revents
) : void
public
EvWatcher::keepalive
([
bool
$value
] ) : bool
public
EvWatcher::setCallback
(
callable
$callback
) : void
public EvWatcher::start ( ) : void
public EvWatcher::stop ( ) : void
}
Properties
pid- Readonly . The process ID this watcher watches out for, or
0, meaning any process ID. rpid- Readonly .The process ID that detected a status change.
rstatus- Readonly . The process exit status caused by
rpid.
Table of Contents
- EvChild::__construct — Constructs the EvChild watcher object
- EvChild::createStopped — Create instance of a stopped EvCheck watcher
- EvChild::set — Configures the watcher
/* Properties */