mirror of
https://git.haproxy.org/git/haproxy.git/
synced 2026-01-16 06:11:00 +01:00
ff1c803279
Listener functions must follow a common locking pattern:
1. Get the proxy's lock if necessary
2. Get the protocol's lock if necessary
3. Get the listener's lock if necessary
We must take care to respect this order to avoid any ABBA issue. However, an
issue was introduced in the commit bcad7e631 ("MINOR: listener: add
relax_listener() function"). relax_listener() gets the lisener's lock and if
resume_listener() is called, the proxy's lock is then acquired.
So to fix the issue, the proxy's lock is first acquired in relax_listener(),
if necessary.
This patch should fix the issue #2222. It must be backported as far as 2.4
because the above commit is marked to be backported there.
The HAProxy documentation has been split into a number of different files for ease of use. 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)