Richard Russo bc9d9844d5 BUG/MAJOR: fd/threads, task/threads: ensure all spin locks are unlocked
Calculate if the fd or task should be locked once, before locking, and
reuse the calculation when determing when to unlock.

Fixes a race condition added in 87d54a9a for fds, and b20aa9ee for tasks,
released in 1.9-dev4. When one thread modifies thread_mask to be a single
thread for a task or fd while a second thread has locked or is waiting on a
lock for that task or fd, the second thread will not unlock it.  For FDs,
this is observable when a listener is polled by multiple threads, and is
closed while those threads have events pending.  For tasks, this seems
possible, where task_set_affinity is called, but I did not observe it.

This must be backported to 1.9.
2019-02-25 16:16:36 +01:00
2018-12-22 11:20:35 +01:00
2018-12-22 11:20:35 +01:00
2018-12-22 11:20:35 +01:00
2018-12-22 11:20:35 +01:00

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
  - 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)
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