/
githubmirror
/
postgres
Обзор
Документация
Войти
/
githubmirror
/
postgres
Код
Запросы
0
Пакеты
0
Релизы
0
Аналитика
Безопасность
master
src/include/postmaster/postmaster.h
145 строк
5 KB
Peter Eisentraut
Fix some -Wcast-qual warnings
27 фев 2026, 23:57
27 фев 2026, 23:57
3f98862
Код
Авторство
О чём код?
/*------------------------------------------------------------------------- * * postmaster.h * Exports from postmaster/postmaster.c. * * Portions Copyright (c) 1996-2026, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * src/include/postmaster/postmaster.h * *------------------------------------------------------------------------- */ #ifndef _POSTMASTER_H #define _POSTMASTER_H #include "lib/ilist.h" #include "miscadmin.h" /* * A struct representing an active postmaster child process. This is used * mainly to keep track of how many children we have and send them appropriate * signals when necessary. All postmaster child processes are assigned a * PMChild entry. That includes "normal" client sessions, but also autovacuum * workers, walsenders, background workers, and aux processes. (Note that at * the time of launch, walsenders are labeled B_BACKEND; we relabel them to * B_WAL_SENDER upon noticing they've changed their PMChildFlags entry. Hence * that check must be done before any operation that needs to distinguish * walsenders from normal backends.) * * "dead-end" children are also allocated a PMChild entry: these are children * launched just for the purpose of sending a friendly rejection message to a * would-be client. We must track them because they are attached to shared * memory, but we know they will never become live backends. * * child_slot is an identifier that is unique across all running child * processes. It is used as an index into the PMChildFlags array. dead-end * children are not assigned a child_slot and have child_slot == 0 (valid * child_slot ids start from 1). */ typedef struct { pid_t pid; /* process id of backend */ int child_slot; /* PMChildSlot for this backend, if any */ BackendType bkend_type; /* child process flavor, see above */ struct RegisteredBgWorker *rw; /* bgworker info, if this is a bgworker */ bool bgworker_notify; /* gets bgworker start/stop notifications */ dlist_node elem; /* list link in ActiveChildList */ } PMChild; #ifdef EXEC_BACKEND extern PGDLLIMPORT int num_pmchild_slots; #endif /* GUC options */ extern PGDLLIMPORT bool EnableSSL; extern PGDLLIMPORT int SuperuserReservedConnections; extern PGDLLIMPORT int ReservedConnections; extern PGDLLIMPORT int PostPortNumber; extern PGDLLIMPORT int Unix_socket_permissions; extern PGDLLIMPORT char *Unix_socket_group; extern PGDLLIMPORT char *Unix_socket_directories; extern PGDLLIMPORT char *ListenAddresses; extern PGDLLIMPORT bool ClientAuthInProgress; extern PGDLLIMPORT int PreAuthDelay; extern PGDLLIMPORT int AuthenticationTimeout; extern PGDLLIMPORT bool log_hostname; extern PGDLLIMPORT bool enable_bonjour; extern PGDLLIMPORT char *bonjour_name; extern PGDLLIMPORT bool restart_after_crash; extern PGDLLIMPORT bool remove_temp_files_after_crash; extern PGDLLIMPORT bool send_abort_for_crash; extern PGDLLIMPORT bool send_abort_for_kill; #ifdef WIN32 extern PGDLLIMPORT HANDLE PostmasterHandle; #else extern PGDLLIMPORT int postmaster_alive_fds[2]; /* * Constants that represent which of postmaster_alive_fds is held by * postmaster, and which is used in children to check for postmaster death. */ #define POSTMASTER_FD_WATCH 0 /* used in children to check for * postmaster death */ #define POSTMASTER_FD_OWN 1 /* kept open by postmaster only */ #endif extern PGDLLIMPORT const char *progname; extern PGDLLIMPORT bool redirection_done; extern PGDLLIMPORT bool LoadedSSL; pg_noreturn extern void PostmasterMain(int argc, char *argv[]); extern void ClosePostmasterPorts(bool am_syslogger); extern void InitProcessGlobals(void); extern int MaxLivePostmasterChildren(void); extern bool PostmasterMarkPIDForWorkerNotify(int); #ifdef WIN32 extern void pgwin32_register_deadchild_callback(HANDLE procHandle, DWORD procId); #endif /* defined in globals.c */ extern PGDLLIMPORT struct ClientSocket *MyClientSocket; /* prototypes for functions in launch_backend.c */ extern pid_t postmaster_child_launch(BackendType child_type, int child_slot, void *startup_data, size_t startup_data_len, const struct ClientSocket *client_sock); const char *PostmasterChildName(BackendType child_type); #ifdef EXEC_BACKEND pg_noreturn extern void SubPostmasterMain(int argc, char *argv[]); #endif /* defined in pmchild.c */ extern PGDLLIMPORT dlist_head ActiveChildList; extern void InitPostmasterChildSlots(void); extern PMChild *AssignPostmasterChildSlot(BackendType btype); extern PMChild *AllocDeadEndChild(void); extern bool ReleasePostmasterChildSlot(PMChild *pmchild); extern PMChild *FindPostmasterChildByPid(int pid); /* * These values correspond to the special must-be-first options for dispatching * to various subprograms. parse_dispatch_option() can be used to convert an * option name to one of these values. */ typedef enum DispatchOption { DISPATCH_CHECK, DISPATCH_BOOT, DISPATCH_FORKCHILD, DISPATCH_DESCRIBE_CONFIG, DISPATCH_SINGLE, DISPATCH_POSTMASTER, /* must be last */ } DispatchOption; extern DispatchOption parse_dispatch_option(const char *name); #endif /* _POSTMASTER_H */