Willy Tarreau 361e31e3fe MEDIUM: pool: compute the number of evictable entries once per pool
In pool_evict_from_local_cache() we used to check for room left in the
pool for each and every object. Now we compute the value before entering
the loop and keep into a local list what has to be released, and call
the OS-specific functions for the other ones.

It should already save some cycles since it's not needed anymore to
recheck for the pool's filling status. But the main expected benefit
comes from the ability to pre-construct a list of all releasable
objects, that will later help with grouping them.
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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)
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