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task_kill() may be used by any thread to kill any task with less overhead than a regular wakeup. In order to achieve this, it bypasses the priority tree and inserts the task directly into the shared tasklets list, cast as a tasklet. The task_list_size is updated to make sure it is properly decremented after execution of this task. The task will thus be picked by process_runnable_tasks() after checking the tree and sent to the TL_URGENT list, where it will be processed and killed. If the task is bound to more than one thread, its first thread will be the one notified. If the task was already queued or running, nothing is done, only the flag is added so that it gets killed before or after execution. Of course it's the caller's responsibility to make sur any resources allocated by this task were already cleaned up or taken over.
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)