Aurelien DARRAGON c9af6d5414 DEBUG: pollers/fd: add thread id suffix to per-thread memory areas name hints
Willy reported that since abb8412d2 ("DEBUG: pollers: add name hint for
large memory areas used by pollers") and 22ec2ad8b ("DEBUG: fd: add name
hint for large memory areas") multiple maps with the same name could be
found in /proc/<pid>/maps when haproxy process is started with multiple
threads, which can be annoying.

In fact this happens because some poller and fd-created memory areas are
being created for each available thread, and since the naming was done
using vma_set_name() with the same <type> and <name> inputs, the resulting
name was the same for all threads.

Thanks to the previous commit, we now use vma_set_name_id() for naming
per-thread memory areas so that "-id" prefix is appended after the name
name, where "id" equals to 'tid+1' (to match the thread numbering logic
found in config file or in ha_panic() report),  allowing to easily
identify which haproxy thread owns the map in /proc/<pid>/maps:

7d3b26200000-7d3b26a01000 rw-p 00000000 00:00 0                          [anon:ev_poll:poll_events-2]
7d3b26c00000-7d3b27001000 rw-p 00000000 00:00 0                          [anon:fd:fd_updt-2]
7d3b27200000-7d3b27a01000 rw-p 00000000 00:00 0                          [anon:ev_poll:poll_events-1]
7d3b34200000-7d3b34601000 rw-p 00000000 00:00 0                          [anon:fd:fd_updt-1]
2024-05-24 12:07:18 +02:00
2021-09-16 09:14:14 +02:00
2024-05-18 16:51:23 +02:00
2024-05-18 16:51:23 +02:00
2024-05-18 16:51:23 +02:00

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
  - 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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