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e03d05c6ce
The goal here is to explicitly mark that a check was migrated so that we don't do it again. This will allow us to perform other actions on the target thread while still knowing that we don't want to be migrated again. The new READY bit combine with SLEEPING to form 4 possible states: SLP RDY State Description 0 0 - (reserved) 0 1 RUNNING Check is bound to current thread and running 1 0 SLEEPING Check is sleeping, not bound to a thread 1 1 MIGRATING Check is migrating to another thread Thus we set READY upon migration, and check for it before migrating, this is sufficient to prevent a second migration. To make things a bit clearer, the SLEEPING bit was switched with FASTINTER so that SLEEPING and READY are adjacent.
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)