The primary goal of this project is to define a portable and efficient C
programming interface (API) to determine the call-chain of a program. The API
additionally provides the means to manipulate the preserved (callee-saved) state
of each call-frame and to resume execution at any point in the call-chain
(non-local goto). The API supports both local (same-process) and remote
(across-process) operation. As such, the API is useful in a number of
applications. Some examples include:
- exception handling
The libunwind API makes it trivial to implement the stack-manipulation aspects
of exception handling.
- debuggers
The libunwind API makes it trivial for debuggers to generate the call-chain
(backtrace) of the threads in a running program.
- introspection
It is often useful for a running thread to determine its call-chain. For
example, this is useful to display error messages (to show how the error came
about) and for performance monitoring/analysis.
- efficient setjmp()
With libunwind, it is possible to implement an extremely efficient version of
setjmp(). Effectively, the only context that needs to be saved consists of the
stack-pointer(s).
===> The following configuration options are available for linux-c7-libunwind-1.2:
DOCS=on: Build and/or install documentation
===> Use 'make config' to modify these settings
Add missing WWW entries
These ports reference the pkg-descr file of some other port and used
to get the WWW entry from that other port's file.
Reported by: dan@langille.org (Dan Langille)
devel: remove 'Created by' lines
A big Thank You to the original contributors of these ports:
* "Waitman Gobble" <uzimac@da3m0n8t3r.com>
* <jkoshy@FreeBSD.org>
* Aaron Dalton <aaron@FreeBSD.org>
* Aaron Dalton <aaron@daltons.ca>
* Aaron H. K. Diep <ahkdiep@gmail.com>
* Aaron Hurt <ahurt@anbcs.com>
* Abel Chow <abel_chow@yahoo.com>
* Adam McLaurin
* Adam Saponara <as@php.net>
* Adam Weinberger <adamw@FreeBSD.org>
* Ade Lovett <ade@FreeBSD.org>
(Only the first 15 lines of the commit message are shown above )
Address some portlint warnings in the Linux infrastructure ports.
Eliminate LINUXNAME from port Makefiles. This was just a helper variable
without special meaning outside port Makefiles but several developers have
copied it to new ports where it was then unused, apparently thinking that
it did have some special meaning.
