NAME

Forks::Super::Sync::Semaphlock - Forks::Super sync object using advisory file locking

SYNOPSIS

$lock = Forks::Super::Sync->new(implementation => 'Semaphlock', ...);

$pid=fork();
$lock->releaseAfterFork();

if ($pid == 0) { # child code
   $lock->acquire(...);
   $lock->release(...);
} else {
   $lock->acquire(...);
   $lock->release(...);
}

DESCRIPTION

IPC synchronization object implemented with advisory file locking. Useful as a last resort if your system does not have good support for semaphores or shared memory.

Advantages: should work anywhere that implements "flock" in perlfunc.

Disadvantages: creates files, IPC litter. Uses precious filehandles.

SEE ALSO

Forks::Super::Sync