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0b51eab764
The IOCB might have closed the FD itself, so it's not an error to have fd.tgid==0 or anything else, nor to have a null running_mask. In fact there are different conditions under which we can leave the IOCB, all of them have been enumerated in the code's comments (namely FD still valid and used, hence has running bit, FD closed but not yet reassigned thus running==0, FD closed and reassigned, hence different tgid and running becomes irrelevant, just like all other masks). For this reason we have no other solution but to try to grab the tgid on return before checking the other bits. In practice it doesn't represent a big cost, because if the FD was closed and reassigned, it's instantly detected and the bit is immediately released without blocking other threads, and if the FD wasn't closed this doesn't prevent it from being migrated to another thread. In the worst case a close by another thread after a migration will be postponed till the moment the running bit is cleared, which is the same as before. |
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| .cirrus.yml | ||
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| INSTALL | ||
| LICENSE | ||
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| Makefile | ||
| README | ||
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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)