/* * include/types/global.h * Global variables. * * Copyright (C) 2000-2012 Willy Tarreau - w@1wt.eu * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation, version 2.1 * exclusively. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef _TYPES_GLOBAL_H #define _TYPES_GLOBAL_H #include #include #include #include #include #include #include #include #include #ifndef UNIX_MAX_PATH #define UNIX_MAX_PATH 108 #endif /* modes of operation (global.mode) */ #define MODE_DEBUG 0x01 #define MODE_DAEMON 0x02 #define MODE_QUIET 0x04 #define MODE_CHECK 0x08 #define MODE_VERBOSE 0x10 #define MODE_STARTING 0x20 #define MODE_FOREGROUND 0x40 #define MODE_MWORKER 0x80 /* Master Worker */ /* list of last checks to perform, depending on config options */ #define LSTCHK_CAP_BIND 0x00000001 /* check that we can bind to any port */ #define LSTCHK_NETADM 0x00000002 /* check that we have CAP_NET_ADMIN */ /* Global tuning options */ /* available polling mechanisms */ #define GTUNE_USE_SELECT (1<<0) #define GTUNE_USE_POLL (1<<1) #define GTUNE_USE_EPOLL (1<<2) #define GTUNE_USE_KQUEUE (1<<3) /* platform-specific options */ #define GTUNE_USE_SPLICE (1<<4) #define GTUNE_USE_GAI (1<<5) #define GTUNE_USE_REUSEPORT (1<<6) #define GTUNE_RESOLVE_DONTFAIL (1<<7) #define GTUNE_SOCKET_TRANSFER (1<<8) #define GTUNE_NOEXIT_ONFAILURE (1<<9) #define GTUNE_USE_SYSTEMD (1<<10) /* Access level for a stats socket */ #define ACCESS_LVL_NONE 0 #define ACCESS_LVL_USER 1 #define ACCESS_LVL_OPER 2 #define ACCESS_LVL_ADMIN 3 #define ACCESS_LVL_MASK 0x3 #define ACCESS_FD_LISTENERS 0x4 /* expose listeners FDs on stats socket */ /* SSL server verify mode */ enum { SSL_SERVER_VERIFY_NONE = 0, SSL_SERVER_VERIFY_REQUIRED = 1, }; /* FIXME : this will have to be redefined correctly */ struct global { int uid; int gid; int external_check; int nbproc; int nbthread; unsigned int hard_stop_after; /* maximum time allowed to perform a soft-stop */ int maxconn, hardmaxconn; int maxsslconn; int ssl_session_max_cost; /* how many bytes an SSL session may cost */ int ssl_handshake_max_cost; /* how many bytes an SSL handshake may use */ int ssl_used_frontend; /* non-zero if SSL is used in a frontend */ int ssl_used_backend; /* non-zero if SSL is used in a backend */ int ssl_used_async_engines; /* number of used async engines */ unsigned int ssl_server_verify; /* default verify mode on servers side */ struct freq_ctr conn_per_sec; struct freq_ctr sess_per_sec; struct freq_ctr ssl_per_sec; struct freq_ctr ssl_fe_keys_per_sec; struct freq_ctr ssl_be_keys_per_sec; struct freq_ctr comp_bps_in; /* bytes per second, before http compression */ struct freq_ctr comp_bps_out; /* bytes per second, after http compression */ int cps_lim, cps_max; int sps_lim, sps_max; int ssl_lim, ssl_max; int ssl_fe_keys_max, ssl_be_keys_max; unsigned int shctx_lookups, shctx_misses; int comp_rate_lim; /* HTTP compression rate limit */ int maxpipes; /* max # of pipes */ int maxsock; /* max # of sockets */ int rlimit_nofile; /* default ulimit-n value : 0=unset */ int rlimit_memmax_all; /* default all-process memory limit in megs ; 0=unset */ int rlimit_memmax; /* default per-process memory limit in megs ; 0=unset */ long maxzlibmem; /* max RAM for zlib in bytes */ int mode; unsigned int req_count; /* request counter (HTTP or TCP session) for logs and unique_id */ int last_checks; int spread_checks; int max_spread_checks; int max_syslog_len; char *chroot; char *pidfile; char *node, *desc; /* node name & description */ struct buffer log_tag; /* name for syslog */ struct list logsrvs; char *log_send_hostname; /* set hostname in syslog header */ char *server_state_base; /* path to a directory where server state files can be found */ char *server_state_file; /* path to the file where server states are loaded from */ struct { int maxpollevents; /* max number of poll events at once */ int maxaccept; /* max number of consecutive accept() */ int options; /* various tuning options */ int runqueue_depth;/* max number of tasks to run at once */ int recv_enough; /* how many input bytes at once are "enough" */ int bufsize; /* buffer size in bytes, defaults to BUFSIZE */ int maxrewrite; /* buffer max rewrite size in bytes, defaults to MAXREWRITE */ int reserved_bufs; /* how many buffers can only be allocated for response */ int buf_limit; /* if not null, how many total buffers may only be allocated */ int client_sndbuf; /* set client sndbuf to this value if not null */ int client_rcvbuf; /* set client rcvbuf to this value if not null */ int server_sndbuf; /* set server sndbuf to this value if not null */ int server_rcvbuf; /* set server rcvbuf to this value if not null */ int chksize; /* check buffer size in bytes, defaults to BUFSIZE */ int pipesize; /* pipe size in bytes, system defaults if zero */ int max_http_hdr; /* max number of HTTP headers, use MAX_HTTP_HDR if zero */ int requri_len; /* max len of request URI, use REQURI_LEN if zero */ int cookie_len; /* max length of cookie captures */ int pattern_cache; /* max number of entries in the pattern cache. */ int sslcachesize; /* SSL cache size in session, defaults to 20000 */ int comp_maxlevel; /* max HTTP compression level */ unsigned short idle_timer; /* how long before an empty buffer is considered idle (ms) */ } tune; struct { char *prefix; /* path prefix of unix bind socket */ struct { /* UNIX socket permissions */ uid_t uid; /* -1 to leave unchanged */ gid_t gid; /* -1 to leave unchanged */ mode_t mode; /* 0 to leave unchanged */ } ux; } unix_bind; struct proxy *stats_fe; /* the frontend holding the stats settings */ struct vars vars; /* list of variables for the process scope. */ #ifdef USE_CPU_AFFINITY struct { unsigned long proc[LONGBITS]; /* list of CPU masks for the 32/64 first processes */ unsigned long thread[LONGBITS][MAX_THREADS]; /* list of CPU masks for the 32/64 first threads per process */ } cpu_map; #endif }; /* per-thread activity reports. It's important that it's aligned on cache lines * because some elements will be updated very often. Most counters are OK on * 32-bit since this will be used during debugging sessions for troubleshooting * in iterative mode. */ struct activity { unsigned int loops; // complete loops in run_poll_loop() unsigned int wake_cache; // active fd_cache prevented poll() from sleeping unsigned int wake_tasks; // active tasks prevented poll() from sleeping unsigned int wake_signal; // pending signal prevented poll() from sleeping unsigned int poll_exp; // number of times poll() sees an expired timeout (includes wake_*) unsigned int poll_drop; // poller dropped a dead FD from the update list unsigned int poll_dead; // poller woke up with a dead FD unsigned int poll_skip; // poller skipped another thread's FD unsigned int fd_skip; // fd cache skipped another thread's FD unsigned int fd_lock; // fd cache skipped a locked FD unsigned int fd_del; // fd cache detected a deleted FD unsigned int conn_dead; // conn_fd_handler woke up on an FD indicating a dead connection unsigned int stream; // calls to process_stream() unsigned int empty_rq; // calls to process_runnable_tasks() with nothing for the thread unsigned int long_rq; // process_runnable_tasks() left with tasks in the run queue char __pad[0]; // unused except to check remaining room char __end[0] __attribute__((aligned(64))); // align size to 64. }; extern struct global global; extern struct activity activity[MAX_THREADS]; extern int pid; /* current process id */ extern int relative_pid; /* process id starting at 1 */ extern unsigned long pid_bit; /* bit corresponding to the process id */ extern int actconn; /* # of active sessions */ extern int listeners; extern int jobs; /* # of active jobs (listeners, sessions, open devices) */ extern THREAD_LOCAL struct buffer trash; extern int nb_oldpids; /* contains the number of old pids found */ extern const int zero; extern const int one; extern const struct linger nolinger; extern int stopping; /* non zero means stopping in progress */ extern int killed; /* non zero means a hard-stop is triggered */ extern char hostname[MAX_HOSTNAME_LEN]; extern char localpeer[MAX_HOSTNAME_LEN]; extern struct list global_listener_queue; /* list of the temporarily limited listeners */ extern struct task *global_listener_queue_task; extern unsigned int warned; /* bitfield of a few warnings to emit just once */ extern volatile unsigned long sleeping_thread_mask; /* bit values to go with "warned" above */ #define WARN_BLOCK_DEPRECATED 0x00000001 /* unassigned : 0x00000002 */ #define WARN_REDISPATCH_DEPRECATED 0x00000004 #define WARN_CLITO_DEPRECATED 0x00000008 #define WARN_SRVTO_DEPRECATED 0x00000010 #define WARN_CONTO_DEPRECATED 0x00000020 /* to be used with warned and WARN_* */ static inline int already_warned(unsigned int warning) { if (warned & warning) return 1; warned |= warning; return 0; } void deinit(void); void hap_register_build_opts(const char *str, int must_free); void hap_register_post_check(int (*fct)()); void hap_register_post_deinit(void (*fct)()); void hap_register_per_thread_init(int (*fct)()); void hap_register_per_thread_deinit(void (*fct)()); #endif /* _TYPES_GLOBAL_H */ /* * Local variables: * c-indent-level: 8 * c-basic-offset: 8 * End: */