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In order to quickly pick a thread ID when accepting a connection, we'll need to know certain pre-computed values derived from the thread mask, which are counts of bits per position multiples of 1, 2, 4, 8, 16 and 32. In practice it is sufficient to compute only the 4 first ones and store them in the bind_conf. We update the count every time the bind_thread value is adjusted. The fields in the bind_conf struct have been moved around a little bit to make it easier to group all thread bit values into the same cache line. The function used to return a thread number is bind_map_thread_id(), and it maps a number between 0 and 31/63 to a thread ID between 0 and 31/63, starting from the left.
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 - 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)