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There is a function called fd_write_frag_line() that's essentially used by loggers and that is used to write an atomic message line over a file descriptor using writev(). However a lock is required around the writev() call to prevent messages from multiple threads from being interleaved. Till now a SPIN_TRYLOCK was used on a dedicated lock that was common to all FDs. This is quite not pretty as if there are multiple output pipes to collect logs, there will be quite some contention. Now that there are empty flags left in the FD state and that we can finally use atomic ops on them, let's add a flag to indicate the FD is locked for exclusive access by a syscall. At least the locking will now be on an FD basis and not the whole process, so we can remove the log_lock. |
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| addons | ||
| admin | ||
| contrib | ||
| dev | ||
| doc | ||
| examples | ||
| include | ||
| reg-tests | ||
| scripts | ||
| src | ||
| tests | ||
| .cirrus.yml | ||
| .gitattributes | ||
| .gitignore | ||
| .travis.yml | ||
| BRANCHES | ||
| CHANGELOG | ||
| CONTRIBUTING | ||
| INSTALL | ||
| LICENSE | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
| ROADMAP | ||
| SUBVERS | ||
| VERDATE | ||
| VERSION | ||
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)