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HAProxy - Load balancer
7416314145
When tasklets were derived from tasks, there was no immediate need for the scheduler to know their status after execution, and in a spirit of simplicity they just started to always return NULL. The problem is that it simply prevents the scheduler from 1) accounting their execution time, and 2) keeping track of their current execution status. Indeed, a remote wake-up could very well end up manipulating a tasklet that's currently being executed. And this is the reason why those handlers have to take the idle lock before checking their context. In 2.5 we'll take care of making tasklets and tasks work more similarly, but trouble is to be expected if we continue to propagate the trend of returning NULL everywhere, especially if some fixes relying on a stricter model later need to be backported. For this reason this patch updates all known tasklet handlers to make them return NULL only when the tasklet was freed. It has no effect for now and isn't even guaranteed to always be 100% safe but it puts the code into the right direction for this. |
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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)