haproxy

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haproxy public development tree

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Aurelien DARRAGON 16d6c0cb09 BUG/MEDIUM: wdt/clock: properly handle early task hangs In `ae053b30` - BUG/MEDIUM: wdt: don't trigger the watchdog when p is unitialized: wdt is not triggering until prev_cpu_time is initialized to prevent unexpected process termination. Unfortunately this is not enough, some tasks could start immediately after process startup, and in such cases prev_cpu_time could be uninitialized, because prev_cpu_time is set after the polling loop while process_runnable_tasks() is executed before the polling loop. It happens to be the case with lua tasks registered using register_task function from lua script. Those tasks are registered in early init stage of haproxy and they are scheduled to run before the first polling loop, leading to prev_cpu_time being uninitialized (equals 0) on the thread when the task is first executed. Because of this, if such tasks get stuck right away (e.g: blocking IO) the watchdog won't behave as expected and the thread will remain stuck indefinitely. (polling loop for the thread won't run at all as the thread is already stuck) To solve this, we're now making sure that prev_cpu_time is first set before any tasks are processed on the thread. This is done by setting initial prev_cpu_time value directly in clock_init_thread_date() Thanks to Abhijeet Rastogi for reporting this unexpected behavior. It could be backported in every stable versions. (everywhere `ae053b30` is, because both are related)		2022-11-14 19:14:53 +01:00
.github	CI: emit the compiler's version in the build reports	2022-11-14 11:14:02 +01:00
addons	BUILD: prometheus: use __fallthrough in promex_dump_metrics() and IO handler()	2022-11-14 11:14:02 +01:00
admin	CLEANUP: assorted typo fixes in the code and comments	2022-10-30 17:17:56 +01:00
dev	MINOR: flags/mux-fcgi: Decode FCGI connection and stream flags	2022-10-12 17:10:41 +02:00
doc	MINOR: ssl: x509_v_err_str converter transforms an integer to a X509_V_ERR name	2022-11-10 13:28:37 +01:00
examples
include	CLEANUP: stick-table: remove the unused table->exp_next	2022-11-14 18:20:38 +01:00
reg-tests	MINOR: ssl: x509_v_err_str converter transforms an integer to a X509_V_ERR name	2022-11-10 13:28:37 +01:00
scripts	CLEANUP: assorted typo fixes in the code and comments	2022-10-30 17:17:56 +01:00
src	BUG/MEDIUM: wdt/clock: properly handle early task hangs	2022-11-14 19:14:53 +01:00
tests	TESTS: add a unit test for one_among_mask()	2022-06-21 20:29:57 +02:00
.cirrus.yml	CI: cirrus-ci: bump FreeBSD image to 13-1	2022-09-09 13:30:17 +02:00
.gitattributes
.gitignore	CLEANUP: exclude udp-perturb with .gitignore	2022-09-16 15:47:04 +02:00
.mailmap
.travis.yml
BRANCHES
CHANGELOG	[RELEASE] Released version 2.7-dev8	2022-10-14 20:45:23 +02:00
CONTRIBUTING
INSTALL	BUILD: Makefile: Add Lua 5.4 autodetect	2022-07-04 17:28:48 +02:00
LICENSE
MAINTAINERS
Makefile	BUILD: Makefile: add "USE_SHM_OPEN" on the linux-musl target	2022-10-21 10:35:37 +02:00
README
SUBVERS
VERDATE	[RELEASE] Released version 2.7-dev8	2022-10-14 20:45:23 +02:00
VERSION	[RELEASE] Released version 2.7-dev8	2022-10-14 20:45:23 +02:00

README

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)