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e1738b665d
When "set-dumpable" is set to "libs", in addition to marking the process dumpable, haproxy also reads the binary and shared objects into memory as a tar archive in a page-aligned location so that these files are easily extractable from a future core dump. The goal here is to always have access to the exact same binary and libs as those which caused the core to happen. It's indeed very frequent to miss some of these, or to get mismatching files due to a local update that didn't experience a reload, or to get those of a host system instead of the container. The in-memory tar file presents everything under a directory called "core-%d" where %d corresponds to the PID of the worker process. In order to ease the finding of these data in the core dump, the memory area is contiguous and surrounded by PROT_NONE pages so that it appears in its own segment in the core file. The total size used by this is a few tens of MB, which is not a problem on large systems.
113 lines
3.9 KiB
C
113 lines
3.9 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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#include <haproxy/cfgparse.h>
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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 int oldpids_sig; /* signal to sent in order to stop the previous (old) process */
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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 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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extern char **init_env;
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extern char *progname;
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extern char **old_argv;
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extern const char *old_unixsocket;
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extern int daemon_fd[2];
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extern int devnullfd;
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extern int fileless_mode;
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extern struct cfgfile fileless_cfg;
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/* storage for collected libs */
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extern void *lib_storage;
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extern size_t lib_size;
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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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void *run_thread_poll_loop(void *data); /* takes the thread config in argument or NULL for any thread */
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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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void hap_register_feature(const char *name);
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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 display_version();
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int handle_pidfile(void);
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void stdio_quiet(int fd);
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void mworker_accept_wrapper(int fd);
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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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extern unsigned int deprecated_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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const char **hap_get_next_build_opt(const char **curr);
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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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