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e7475c8e79
Every single place where sleeping_thread_mask was still used was to test
or set a single thread. We can now add a per-thread flag to indicate a
thread is sleeping, and remove this shared mask.
The wake_thread() function now always performs an atomic fetch-and-or
instead of a first load then an atomic OR. That's cleaner and more
reliable.
This is not easy to test, as broadcast FD events are rare. The good
way to test for this is to run a very low rate-limited frontend with
a listener that listens to the fewest possible threads (2), and to
send it only 1 connection at a time. The listener will periodically
pause and the wakeup task will sometimes wake up on a random thread
and will call wake_thread():
frontend test
bind :8888 maxconn 10 thread 1-2
rate-limit sessions 5
Alternately, disabling/enabling a frontend in loops via the CLI also
broadcasts such events, but they're more difficult to observe since
this is causing connection failures.
96 lines
3.3 KiB
C
96 lines
3.3 KiB
C
/*
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* include/haproxy/global.h
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* Exported global variables and functions.
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*
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* Copyright (C) 2000-2020 Willy Tarreau - w@1wt.eu
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _HAPROXY_GLOBAL_H
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#define _HAPROXY_GLOBAL_H
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#include <haproxy/api-t.h>
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#include <haproxy/global-t.h>
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extern const char *build_features;
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extern struct global global;
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extern int pid; /* current process id */
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extern int actconn; /* # of active sessions */
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extern int listeners;
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extern int jobs; /* # of active jobs (listeners, sessions, open devices) */
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extern int unstoppable_jobs; /* # of active jobs that can't be stopped during a soft stop */
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extern int active_peers; /* # of active peers (connection attempts and successes) */
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extern int connected_peers; /* # of really connected peers */
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extern int nb_oldpids; /* contains the number of old pids found */
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extern const int zero;
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extern const int one;
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extern const struct linger nolinger;
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extern int stopping; /* non zero means stopping in progress */
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extern int killed; /* >0 means a hard-stop is triggered, >1 means hard-stop immediately */
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extern char hostname[MAX_HOSTNAME_LEN];
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extern char *localpeer;
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extern unsigned int warned; /* bitfield of a few warnings to emit just once */
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extern struct list proc_list; /* list of process in mworker mode */
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extern int master; /* 1 if in master, 0 otherwise */
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extern unsigned int rlim_fd_cur_at_boot;
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extern unsigned int rlim_fd_max_at_boot;
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extern int atexit_flag;
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extern unsigned char boot_seed[20]; // per-boot random seed (160 bits initially)
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extern THREAD_LOCAL struct buffer trash;
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struct proxy;
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struct server;
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int main(int argc, char **argv);
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void deinit(void);
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__attribute__((noreturn)) void deinit_and_exit(int);
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void run_poll_loop(void);
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int tell_old_pids(int sig);
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int delete_oldpid(int pid);
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void hap_register_build_opts(const char *str, int must_free);
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int split_version(const char *version, unsigned int *value);
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int compare_current_version(const char *version);
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void mworker_accept_wrapper(int fd);
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void mworker_reload(void);
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/* to be used with warned and WARN_* */
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static inline int already_warned(unsigned int warning)
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{
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if (warned & warning)
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return 1;
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warned |= warning;
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return 0;
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}
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extern unsigned int experimental_directives_allowed;
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struct cfg_keyword;
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int check_kw_experimental(struct cfg_keyword *kw, const char *file, int linenum,
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char **errmsg);
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/* simplified way to declare static build options in a file */
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#define REGISTER_BUILD_OPTS(str) \
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INITCALL2(STG_REGISTER, hap_register_build_opts, (str), 0)
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#endif /* _HAPROXY_GLOBAL_H */
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/*
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* Local variables:
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* c-indent-level: 8
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* c-basic-offset: 8
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* End:
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*/
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