ActiveState!

ActivePerl Documentation
Table of Contents

(Usage Statistics)
(about this ver)


* Getting Started
    * Welcome To ActivePerl
    * Release Notes
    * Readme
    * ActivePerl Change Log
* Install Notes
    * Linux
    * Solaris
    * Windows
* ActivePerl Components
    * Overview
    * PPM
    * Windows Specifics
       * OLE Browser
       * PerlScript
       * Perl for ISAPI
       * PerlEZ
* ActivePerl FAQ
    * Introduction
    * Availability & Install
    * Using PPM
    * Docs & Support
    * Windows Specifics
       * Perl for ISAPI
       * Windows 9X/NT/2000
       * Quirks
       * Web Server Config
       * Web programming
       * Programming
       * Modules & Samples
       * Embedding & Extending
       * Using OLE with Perl
* Windows Scripting
    * Active Server Pages
    * Windows Script Host
    * Windows Script Components

Core Perl Documentation


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 Thread::Signal - Start a thread which runs signal handlers reliably


NAME

Thread::Signal - Start a thread which runs signal handlers reliably


SUPPORTED PLATFORMS

  • Linux
  • Solaris
  • Windows

SYNOPSIS

    use Thread::Signal;
    $SIG{HUP} = \&some_handler;


DESCRIPTION

The Thread::Signal module starts up a special signal handler thread. All signals to the process are delivered to it and it runs the associated $SIG{FOO} handlers for them. Without this module, signals arriving at inopportune moments (such as when perl's internals are in the middle of updating critical structures) cause the perl code of the handler to be run unsafely which can cause memory corruption or worse.


BUGS

This module changes the semantics of signal handling slightly in that the signal handler is run separately from the main thread (and in parallel with it). This means that tricks such as calling die from a signal handler behave differently (and, in particular, can't be used to exit directly from a system call).

 Thread::Signal - Start a thread which runs signal handlers reliably