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9464bb1f05
The file descriptors will need to know the thread group ID in addition to the mask. This extends fd_insert() to take the tgid, and will store it into the FD. In the FD, the tgid is stored as a combination of tgid on the lower 16 bits and a refcount on the higher 16 bits. This allows to know when it's really possible to trust the tgid and the running mask. If a refcount is higher than 1 it indeed indicates another thread else might be in the process of updating these values. Since a closed FD must necessarily have a zero refcount, a test was added to fd_insert() to make sure that it is the case.
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)