DBIx::Timeout 1.01

DBIx::Timeout is a Perl module that provides a safe method of timing out DBI requests. The method described in the DBI documentati

Developer:	Sam Tregar more software by author →
Price:	0.00
License:	Perl Artistic License
File size:	5K
Language:
OS:
Rating:	0 /5 (0 votes)
Your vote:
enlarge screenshot

DBIx::Timeout is a Perl module that provides a safe method of timing out DBI requests.

The method described in the DBI documentation uses unsafe signals, which may cause memory corruption. DBIx::Timeout instead uses a separate timeout process.

The problem with using POSIX sigaction() is that it relies on unsafe signals to work. Unsafe signals are well known to cause instability. For example, imagine your DB client code is in the middle of updating some global state when the signal arrives. That global state could be left in an inconsitent state, just wait for the next time it is needed to cause problems. Since this will likely occur far from the cause, and only ocur rarely, it can be a very difficult problem to track down.

Instead, this module:

- Forks a child process which sleeps for $timeout seconds.
- Runs your long-running query in the parent process.
- If the parent process finishes first it kills the child and returns.
- If the child process wakes up it kills the parent's DB thread and exits with a code so the parent knows it was timed out.

NOTE: After this call your database connection may be killed even if no timeout occurred. This is due to a race condition - the child may wake up just as parent process finishes. Patches addressing this bug are welcome. Until this is fixed you should be ready to reconnect after call_with_timeout().

Requirements:

Perl
tags

the parent parent process the child unsafe signals kills the process finishes dbix timeout global state child process

Download DBIx::Timeout 1.01

http://ftp.casaafacerilor.ro/mirrors/CPAN/authors/id/S/SA/SAMTREGAR/DBIx-Timeout-1.01.tar.gz

Authors software

HTML::Template 2.8 (by Sam Tregar)
HTML::Template module attempts to make using HTML templates simple and natural

HTML::Template::Expr 0.07 (by Sam Tregar)

HTML::Template::JIT 0.05 (by Sam Tregar)
HTML::Template::JIT is a just-in-time compiler for HTML::Template

Krang 2.007 (by Sam Tregar)
Krang is an open-source content-management system designed to publish magazine websites

CGI::Application::Plugin::RateLimit 1.0 (by Sam Tregar)
CGI::Application::Plugin::RateLimit is a plugin for CGI::Application which provides protection against a user calling a runmode too f

Similar software

DBIx::Timeout 1.01 (by Sam Tregar)
DBIx::Timeout is a Perl module that provides a safe method of timing out DBI requests.

The method described in the DBI documentati

ShmFIFO library 1.0 (by World Wide Web Security)
ShmFIFO library provides an easy-to-use interface to shared memory for programs where one process needs to send blocks of data to oth

mod_become 1.03 (by Anthony Howe)
mod_become module enables the web server to take on the access rights of a user & group, so that ~users can make available files to t

JSignal 0.2 (by Jason Barto)
JSignal is a loose port of the signal system implemented by GTK's GLib

mod_log_mysql 20031023 (by Sonke Tesch)
mod_log_mysql can log requests to Apache 2 using a MySQL database.

Here are some key features of "mod log mysql":
· Seamless inte

IPC::Run 0.80 (by Barrie Slaymaker)
IPC::Run is a Perl module for system() and background procs w/ piping, redirs, ptys (Unix, Win32).

Requirements:
· Perl

SYNOPS

DBIx::XMLServer 0.02 (by Martin Bright)
DBIx::XMLServer is a Perl module to serve data as XML in response to HTTP requests.

SYNOPSIS

use XML::LibXML;
use DBIx::XM

XML::Filter::DOMFilter::LibXML 0.02 (by Petr Pajas)
XML::Filter::DOMFilter::LibXML is a SAX Filter allowing DOM processing of selected subtrees.

SYNOPSIS

use XML::LibXML;
use

POE::Component::Generic 0.0904 (by David Davis and Teknikill Software)
POE::Component::Generic is a POE component that provides non-blocking access to a blocking object.

SYNOPSIS

use POE::Compon

Nagios::WebTransact::Timed 0.06 (by Stanley Hopcroft)

Other software in this category

zlib 1.2.3 (by Jean-loup Gailly)
zlib is designed to be a free, general-purpose, legally unencumbered, lossless data-compression library for use on virtually any comp

libjpeg v6b (by Independent JPEG Group)
libjpeg is a library for handling the JPEG (JFIF) image format

OpenSSL 0.9.7c (by The OpenSSL Project Team)
The OpenSSL Project is a collaborative effort to develop a robust, commercial-grade, full-featured, and Open Source toolkit implement

libxml2 2.6.27 (by DV)
Libxml2 is the XML C parser and toolkit developed for the Gnome project (but usable outside of the Gnome platform), libxml2 library i

GNU C library 2.4 (by Andreas Jaeger)
GNU C library (glibc) is one of the most important components of GNU Hurd and most modern Linux distributions.

GNU C library is us