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Most of the functions designed to read a counter over a period go through the same complex loop and only differ in the way they use the returned values, so it was worth implementing all this into freq_ctr_total() which returns the total number of events over a period so that the caller can finish its operation using a divide or a remaining time calculation. As a special case, read_freq_ctr_period() doesn't take pending events but requires to enable an anti-flapping correction at very low frequencies. Thus the function implements it when pend<0. Thanks to this function it will be possible to reimplement the other ones as inline and merge the per-second ones with the arbitrary period ones without always adding the cost of a 64 bit divide.
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)