The Apache Software Foundation
The Apache Software Foundation and the Apache Portable Runtime Project are proud to announce the General Availability of version 1.3.6 of the APR Apache Portable Runtime library, and version 1.3.8 of the companion APR-util Apache Portable Utility library.
The corresponding version 1.2.1 of the companion APR-iconv library, an alternative portable implementation of the 'iconv' library, remains current.
APR is available for download from:
http://apr.apache.org/download.cgi
This version of APR is a primarily a bug fix release, including fixes for specific platforms' configuration, feature detection, and run time behavior. Most developers and users are encouraged to adopt the latest APR 1.x version to ensure the most comprehensive support and access to the latest features and enhancements.
Note that the APR-util library release 1.3.7 introduced security fixes, users of prior versions are strongly cautioned to upgrade to a later release.
The mission of the Apache Portable Runtime Project is to create and maintain software libraries that provide a predictable and consistent interface to underlying platform-specific implementations. The primary goal is to provide an API to which software developers may code and be assured of predictable if not identical behavior regardless of the platform on which their software is built, relieving them of the need to code special-case conditions to work around or take advantage of platform-specific deficiencies or features.
APR and its companion libraries are implemented entirely in C and provide a common programming interface across a wide variety of operating system platforms without sacrificing performance.
Currently supported platforms include:
UNIX variants
Windows
Netware
Mac OS X
OS/2
To give a brief overview, the primary core subsystems of APR 1.3 include the following:
Atomic operations
Dynamic Shared Object loading
File I/O
Locks (mutexes, condition variables, etc)
Memory management (high performance allocators)
Memory-mapped files
Multicast Sockets
Network I/O
Shared memory
Thread and Process management
Various data structures (tables, hashes, priority queues, etc)
For a more complete list, please refer to the following URLs:
http://apr.apache.org/docs/apr/modules.html
http://apr.apache.org/docs/apr-util/modules.html
Users of APR 0.9 should be aware that migrating to the APR 1.x programming interfaces may require some adjustments; APR 1.x is neither source nor binary compatible with earlier APR 0.9 releases.
Users of APR 1.x can expect consistent interfaces and binary backwards compatibility throughout the entire APR 1.x release cycle, as defined in our versioning rules:
http://apr.apache.org/versioning.html
APR is already used extensively by the Apache HTTP Server version 2 and the Subversion revision control system, to name but a few. We list all known projects using APR at http://apr.apache.org/projects.html -- so please let us know
if you find our libraries useful in your own projects!