NAME
Global::MutexLock - A xs module to give perl global mutex-lock between crons or web-app's workers
SYNOPSIS
use Global::MutexLock;
DESCRIPTION
Global::MutexLock is a module to create os-level global mutex-lock for perl. You can lock anything between process to others, or web-applications, or threads,cron.
Mutex-lock's pointer is stored in System V IPC. You should let the process to know the IPC-ID for locking.
If you want to delete IPC-ID by yourself, please use 'ipcs','ipcrm'.
USAGE
# 0. use Global::MutexLock;
use Global::MutexLock qw(mutex_create mutex_destory mutex_lock mutex_unlock);
# 1. create a new global mutex id # tips: you can create an id, and use it in different crons or apps
my $mutex_id = mutex_create();
# 2. take a lock
unless (mutex_lock($mutex_id)) {
warn "lock error";
}
# 3. do something... # ...
# 4. release lock
unless (mutex_unlock($mutex_id)) {
warn "release lock error";
}
# 5. destory mutex lock id # you must do it. otherwise the IPC id will be leaved in system. # or you can rm it by `ipcrm -m IPCID` # you can find IPCID by `ipcs`
mutex_destory($mutex_id);
LICENSE
Copyright (C) itsusony. FreakOut. MIT LICENSE
AUTHOR
itsusony <itsusony@fout.jp>