7b6acb6a51
When the strict level is zero and BUG_ON() is not implemented, some possible null-deref warnings are emitted again because some were covering for these cases. Let's make it fall back to ASSUME() so that the compiler continues to know that the tested expression never happens. It also allows to further optimize certain functions by helping the compiler eliminate certain tests for impossible values. However it requires that the expression is really evaluated before passing the result through ASSUME() otherwise it was shown that gcc-11 and above will fail to evaluate its implications and will continue to emit the null-deref warnings in case the expression is non-trivial (e.g. it has multiple terms). We don't do it for BUG_ON_HOT() however because the extra cost of evaluating the condition is generally not welcome in fast paths, particularly when that BUG_ON_HOT() was kept disabled for performance reasons.
HAProxy
HAProxy is a free, very fast and reliable reverse-proxy offering high availability, load balancing, and proxying for TCP and HTTP-based applications.
Installation
The INSTALL file describes how to build HAProxy. A list of packages is also available on the wiki.
Getting help
The discourse and the mailing-list are available for questions or configuration assistance. You can also use the slack or IRC channel. Please don't use the issue tracker for these.
The issue tracker is only for bug reports or feature requests.
Documentation
The HAProxy documentation has been split into a number of different files for ease of use. It is available in text format as well as HTML. The wiki is also meant to replace the old architecture guide.
Please refer to the following files depending on what you're looking for:
- INSTALL for instructions on how to build and install HAProxy
- BRANCHES to understand the project's life cycle and what version to use
- LICENSE for the project's license
- CONTRIBUTING for the process to follow to submit contributions
The more detailed documentation is located into the doc/ directory:
- doc/intro.txt for a quick introduction on HAProxy
- doc/configuration.txt for the configuration's reference manual
- doc/lua.txt for the Lua's reference manual
- doc/SPOE.txt for how to use the SPOE engine
- doc/network-namespaces.txt for how to use network namespaces under Linux
- doc/management.txt for the management guide
- doc/regression-testing.txt for how to use the regression testing suite
- doc/peers.txt for the peers protocol reference
- doc/coding-style.txt for how to adopt HAProxy's coding style
- doc/internals for developer-specific documentation (not all up to date)
License
HAProxy is licensed under GPL 2 or any later version, the headers under LGPL 2.1. See the LICENSE file for a more detailed explanation.