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haproxy/include/proto/mworker.h

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REORG: mworker: move serializing functions to mworker.c Move the 2 following functions to mworker.c: void mworker_proc_list_to_env() void mworker_env_to_proc_list()
2019-04-01 09:29:53 +00:00
/*
* Master Worker
*
* Copyright HAProxy Technologies 2019 - William Lallemand <wlallemand@haproxy.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
*/
#ifndef PROTO_MWORKER_H_
#define PROTO_MWORKER_H_
REORG: mworker: move signal handlers and related functions Move the following functions to mworker.c: void mworker_catch_sighup(struct sig_handler *sh); void mworker_catch_sigterm(struct sig_handler *sh); void mworker_catch_sigchld(struct sig_handler *sh); static void mworker_kill(int sig); int current_child(int pid);
2019-04-01 09:29:56 +00:00
#include <types/signal.h>
REORG: mworker: move serializing functions to mworker.c Move the 2 following functions to mworker.c: void mworker_proc_list_to_env() void mworker_env_to_proc_list()
2019-04-01 09:29:53 +00:00
void mworker_proc_list_to_env();
void mworker_env_to_proc_list();
REORG: mworker: move signals functions to mworker.c Move the following functions to mworker.c: void mworker_block_signals(); void mworker_unblock_signals();
2019-04-01 09:29:54 +00:00
void mworker_block_signals();
void mworker_unblock_signals();
BUG/MINOR: mworker: properly pass SIGTTOU/SIGTTIN to workers If a new process is started with -sf and it fails to bind, it may send a SIGTTOU to the master process in hope that it will temporarily unbind. Unfortunately this one doesn't catch it and stops to background instead of forwarding the signal to the workers. The same is true for SIGTTIN. This commit simply implements an extra signal handler for the master to deal with such signals that must be passed down to the workers. It must be backported as far as 1.8, though there the code differs in that it's entirely in haproxy.c and doesn't require an extra sig handler.
2019-12-11 13:24:07 +00:00
void mworker_broadcast_signal(struct sig_handler *sh);
REORG: mworker: move signal handlers and related functions Move the following functions to mworker.c: void mworker_catch_sighup(struct sig_handler *sh); void mworker_catch_sigterm(struct sig_handler *sh); void mworker_catch_sigchld(struct sig_handler *sh); static void mworker_kill(int sig); int current_child(int pid);
2019-04-01 09:29:56 +00:00
void mworker_catch_sighup(struct sig_handler *sh);
void mworker_catch_sigterm(struct sig_handler *sh);
void mworker_catch_sigchld(struct sig_handler *sh);
REORG: mworker: move IPC functions to mworker.c Move the following functions to mworker.c: void mworker_accept_wrapper(int fd); void mworker_pipe_register();
2019-04-01 09:29:55 +00:00
void mworker_accept_wrapper(int fd);
REORG: mworker: move mworker_cleanlisteners to mworker.c
2019-04-01 09:29:57 +00:00
void mworker_cleanlisteners();
MINOR: mworker: don't use children variable anymore The children variable is still used in haproxy, it is not required anymore since we have the information about the current workers in the mworker_proc linked list. The oldpids array is also replaced by this linked list when we generated the arguments for the master reexec.
2019-04-01 09:29:59 +00:00
int mworker_child_nb();
MEDIUM: mworker-prog: implement program for master-worker This patch implements the external binary support in the master worker. To configure an external process, you need to use the program section, for example: program dataplane-api command ./dataplane_api Those processes are launched at the same time as the workers. During a reload of HAProxy, those processes are dealing with the same sequence as a worker: - the master is re-executed - the master sends a USR1 signal to the program - the master launches a new instance of the program During a stop, or restart, a SIGTERM is sent to the program.
2019-04-01 09:30:02 +00:00
int mworker_ext_launch_all();
MINOR: mworker: support a configurable maximum number of reloads This patch implements a new global parameter for the master-worker mode. When setting the mworker-max-reloads value, a worker receive a SIGTERM if its number of reloads is greater than this value.
2019-05-07 15:49:33 +00:00
void mworker_kill_max_reloads(int sig);
REORG: mworker: move signal handlers and related functions Move the following functions to mworker.c: void mworker_catch_sighup(struct sig_handler *sh); void mworker_catch_sigterm(struct sig_handler *sh); void mworker_catch_sigchld(struct sig_handler *sh); static void mworker_kill(int sig); int current_child(int pid);
2019-04-01 09:29:56 +00:00
BUG/MINOR: mworker: Fix memory leak of mworker_proc members The struct mworker_proc is not uniformly freed everywhere, sometimes leading to leaks of the `id` string (and possibly the other strings). Introduce a mworker_free_child function instead of duplicating the freeing logic everywhere to prevent this kind of issues. This leak was reported in issue #96. It looks like the leaks have been introduced in commit 9a1ee7ac31c56fd7d881adf2ef4659f336e50c9f, which is specific to 2.0-dev. Backporting `mworker_free_child` might be helpful to ease backporting other fixes, though.
2019-05-16 18:23:22 +00:00
void mworker_free_child(struct mworker_proc *);
REORG: mworker: move serializing functions to mworker.c Move the 2 following functions to mworker.c: void mworker_proc_list_to_env() void mworker_env_to_proc_list()
2019-04-01 09:29:53 +00:00
#endif /* PROTO_MWORKER_H_ */
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