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Win32::Semaphore - Use Win32 semaphore objects from Perl |
Win32::Semaphore - Use Win32 semaphore objects from Perl
$sem = Win32::Semaphore->new($initial,$maximum,$name);
$sem->wait;
This module allows access to Win32 semaphore objects. The wait
method and wait_all & wait_any functions are inherited from the
Win32::IPC module.
$initial is the initial
count, and $maximum is the maximum count for the semaphore. If
$name is omitted, creates an unnamed semaphore object.
If $name signifies an existing semaphore object, then $initial
and $maximum are ignored and the object is opened.
open($name)$semaphore by $increment (default 1).
If $increment plus the semaphore's current count is more than its
maximum count, the count is not changed. Returns true if the
increment is successful.
The semaphore's count (before incrementing) is stored in the second argument (if any).
It is not necessary to wait on a semaphore before calling release,
but you'd better know what you're doing.
wait([$timeout])$semaphore's count to be nonzero, then decrement it by 1.
See Win32::IPC.
Win32::Semaphore still supports the ActiveWare syntax, but its use is deprecated.
$SemObject = Win32::Semaphore->new($Initial,$Max,$Name) instead.
$SemObject = Win32::Semaphore->open($Name) instead.
Release($Count,$LastVal)$SemObj->release($Count,$LastVal) instead.
Christopher J. Madsen <chris_madsen@geocities.com>
Loosely based on the original module by ActiveWare Internet Corp., http://www.ActiveWare.com
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Win32::Semaphore - Use Win32 semaphore objects from Perl |