Vyacheslav Matyukhin
/
Ubic-1.57
/
Ubic::Daemon::PidState
NAME
Ubic::Daemon::PidState - internal object representing process info stored on disk
VERSION
version 1.57
INTERFACE SUPPORT
This is considered to be a non-public class. Its interface is subject to change without notice.
METHODS
- new()
-
Constructor. Does nothing by itself, doesn't read pidfile and doesn't try to create pid dir.
- is_empty()
-
Check if pid dir doesn't exist yet.
- init()
-
Create pid dir. After this method is called, is_empty()
will start to return false value.
- read()
-
Read daemon info from pidfile.
Returns undef if pidfile not found. Throws exceptions when content is invalid.
- lock() =item lock($timeout)
-
Acquire piddir lock. Lock will be nonblocking unless 'timeout' parameter is set.
- remove()
-
Remove the pidfile from the piddir. is_empty()
will still return false.
This method should be called only after lock is acquired via lock()
method (TODO - check before removing?).
- write({ pid = $pid, guid => $guid })>
-
Write guardian pid and guid into the pidfile.
AUTHOR
Vyacheslav Matyukhin <mmcleric@yandex-team.ru>
COPYRIGHT AND LICENSE
This software is copyright (c) 2013 by Yandex LLC.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.