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From Wikipedia, the free encyclopedia

Apache Portable Runtime

Developed by	Apache Software Foundation
Latest release	1.3.3 / 2008-08-16; 233 days ago
Written in	C/C++
Operating system	Cross-platform
Type	Development Library
License	Apache License 2.0
Website	http://apr.apache.org

The Apache Portable Runtime (APR) is a supporting library for the Apache web server. It provides a set of APIs that map to the underlying operating system. Where the OS doesn't support a particular function, APR will provide a replacement. Thus, the APR can be used to make a program truly portable across platforms.

APR was originally a part of Apache, but has now been spun off into a separate project of the Apache Software Foundation, and is used by other applications to achieve platform independence.

The range of platform-independent functionality provided by APR includes:

• Memory allocation and memory pool functionality
• Atomic operations
• Dynamic library handling
• File I/O
• Command argument parsing
• Locking
• Hash tables and arrays
• Mmap functionality
• Network sockets and protocols
• Thread, process and mutex functionality
• Shared memory functionality
• Time routines
• User and group ID services

Contents 1 Installation 2 Similar projects 3 External links 4 References

[edit] Installation

A very simple tutorial that explains how to compile and install Apache Portable Runtime (apr) on Linux can be found here.

[edit] Similar projects

• Glib provides similar functionality. It supports many more data structures and OS-independent functions, but fewer IPC-related functions (local and global locking, dynamic loading, or shared memory management are not provided).
• NSPR is a cross-platform abstraction library used by the Mozilla project. It is used by another subproject of Mozilla XPFE to provide cross-platform graphical user interface (GUI) functionality.
• Adaptive Communication Environment (ACE) is an object-oriented library written in C++ similar in functionality to APR. It is widely deployed in commercial products^[1].
• commonc++ is a cross-platform C++ class library for systems programming, with much of the same functionality as APR.
• WxWidgets is an object-oriented cross-platform GUI library that also provides abstraction classes for database communication, IPC and networking functionality.
• Qt is a cross-platform application development framework with similar features and can also be used for GUI development.

[edit] External links

• The APR website
• The current APR programming documentation
• The Apache Software Foundation website
• APR programming tutorial
• APR wikibooks tutorial (inactive)

[edit] References

v • d • e Apache Software Foundation Top level projects ActiveMQ · Ant · Apache HTTP Server · APR · Beehive · Buildr · Camel · Cayenne · Cocoon · Commons · CouchDB · CXF · Derby · Directory · Excalibur · Felix · Forrest · Geronimo · Gump · Hadoop · Harmony · HiveMind · iBATIS · Jackrabbit · James · Lenya · Maven · mod_perl · MyFaces · OFBiz · OpenEJB · OpenJPA · POI · Roller · Shale · SpamAssassin · stdcxx · Struts · Tapestry · Tomcat · Tuscany · Velocity · Wicket · XMLBeans Other projects Jakarta Project · Apache Lucene · Apache XML · Apache Incubator Sub-projects BCEL · BSF · Cactus · Chainsaw · JMeter · Slide · Xerces · Batik · FOP · Log4j · XAP · River · ServiceMix · Log4Net · Abdera · Ivy · ODE · JSPWiki License: Apache License · Website: http://apache.org/