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postmaster.h
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1 /*-------------------------------------------------------------------------
2  *
3  * postmaster.h
4  * Exports from postmaster/postmaster.c.
5  *
6  * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
7  * Portions Copyright (c) 1994, Regents of the University of California
8  *
9  * src/include/postmaster/postmaster.h
10  *
11  *-------------------------------------------------------------------------
12  */
13 #ifndef _POSTMASTER_H
14 #define _POSTMASTER_H
15 
16 /* GUC options */
17 extern PGDLLIMPORT bool EnableSSL;
18 extern PGDLLIMPORT int ReservedBackends;
19 extern PGDLLIMPORT int PostPortNumber;
21 extern PGDLLIMPORT char *Unix_socket_group;
23 extern PGDLLIMPORT char *ListenAddresses;
25 extern PGDLLIMPORT int PreAuthDelay;
27 extern PGDLLIMPORT bool Log_connections;
28 extern PGDLLIMPORT bool log_hostname;
29 extern PGDLLIMPORT bool enable_bonjour;
30 extern PGDLLIMPORT char *bonjour_name;
35 
36 #ifdef WIN32
37 extern PGDLLIMPORT HANDLE PostmasterHandle;
38 #else
39 extern PGDLLIMPORT int postmaster_alive_fds[2];
40 
41 /*
42  * Constants that represent which of postmaster_alive_fds is held by
43  * postmaster, and which is used in children to check for postmaster death.
44  */
45 #define POSTMASTER_FD_WATCH 0 /* used in children to check for
46  * postmaster death */
47 #define POSTMASTER_FD_OWN 1 /* kept open by postmaster only */
48 #endif
49 
50 extern PGDLLIMPORT const char *progname;
51 
52 extern void PostmasterMain(int argc, char *argv[]) pg_attribute_noreturn();
53 extern void ClosePostmasterPorts(bool am_syslogger);
54 extern void InitProcessGlobals(void);
55 
56 extern int MaxLivePostmasterChildren(void);
57 
58 extern bool PostmasterMarkPIDForWorkerNotify(int);
59 
60 #ifdef EXEC_BACKEND
61 extern pid_t postmaster_forkexec(int argc, char *argv[]);
62 extern void SubPostmasterMain(int argc, char *argv[]) pg_attribute_noreturn();
63 
64 extern Size ShmemBackendArraySize(void);
65 extern void ShmemBackendArrayAllocation(void);
66 #endif
67 
68 /*
69  * Note: MAX_BACKENDS is limited to 2^18-1 because that's the width reserved
70  * for buffer references in buf_internals.h. This limitation could be lifted
71  * by using a 64bit state; but it's unlikely to be worthwhile as 2^18-1
72  * backends exceed currently realistic configurations. Even if that limitation
73  * were removed, we still could not a) exceed 2^23-1 because inval.c stores
74  * the backend ID as a 3-byte signed integer, b) INT_MAX/4 because some places
75  * compute 4*MaxBackends without any overflow check. This is rechecked in the
76  * relevant GUC check hooks and in RegisterBackgroundWorker().
77  */
78 #define MAX_BACKENDS 0x3FFFF
79 
80 #endif /* _POSTMASTER_H */
#define PGDLLIMPORT
Definition: c.h:1252
#define pg_attribute_noreturn()
Definition: c.h:201
size_t Size
Definition: c.h:541
PGDLLIMPORT bool enable_bonjour
Definition: postmaster.c:232
PGDLLIMPORT bool log_hostname
Definition: postmaster.c:228
PGDLLIMPORT int PostPortNumber
Definition: postmaster.c:199
PGDLLIMPORT bool send_abort_for_kill
Definition: postmaster.c:237
PGDLLIMPORT int Unix_socket_permissions
Definition: pqcomm.c:106
PGDLLIMPORT char * ListenAddresses
Definition: postmaster.c:205
PGDLLIMPORT bool send_abort_for_crash
Definition: postmaster.c:236
void InitProcessGlobals(void)
Definition: postmaster.c:2672
PGDLLIMPORT int postmaster_alive_fds[2]
Definition: postmaster.c:553
PGDLLIMPORT char * Unix_socket_directories
Definition: postmaster.c:202
PGDLLIMPORT const char * progname
Definition: main.c:45
PGDLLIMPORT int AuthenticationTimeout
Definition: postmaster.c:226
PGDLLIMPORT bool ClientAuthInProgress
Definition: postmaster.c:347
PGDLLIMPORT char * bonjour_name
Definition: postmaster.c:233
PGDLLIMPORT int PreAuthDelay
Definition: postmaster.c:225
void PostmasterMain(int argc, char *argv[]) pg_attribute_noreturn()
Definition: postmaster.c:563
PGDLLIMPORT char * Unix_socket_group
Definition: pqcomm.c:107
bool PostmasterMarkPIDForWorkerNotify(int)
Definition: postmaster.c:5954
PGDLLIMPORT int ReservedBackends
Definition: postmaster.c:216
PGDLLIMPORT bool remove_temp_files_after_crash
Definition: postmaster.c:235
PGDLLIMPORT bool Log_connections
Definition: postmaster.c:229
PGDLLIMPORT bool EnableSSL
Definition: postmaster.c:223
int MaxLivePostmasterChildren(void)
Definition: postmaster.c:5531
void ClosePostmasterPorts(bool am_syslogger)
Definition: postmaster.c:2608
PGDLLIMPORT bool restart_after_crash
Definition: postmaster.c:234