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miscadmin.h
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1 /*-------------------------------------------------------------------------
2  *
3  * miscadmin.h
4  * This file contains general postgres administration and initialization
5  * stuff that used to be spread out between the following files:
6  * globals.h global variables
7  * pdir.h directory path crud
8  * pinit.h postgres initialization
9  * pmod.h processing modes
10  * Over time, this has also become the preferred place for widely known
11  * resource-limitation stuff, such as work_mem and check_stack_depth().
12  *
13  * Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
14  * Portions Copyright (c) 1994, Regents of the University of California
15  *
16  * src/include/miscadmin.h
17  *
18  * NOTES
19  * some of the information in this file should be moved to other files.
20  *
21  *-------------------------------------------------------------------------
22  */
23 #ifndef MISCADMIN_H
24 #define MISCADMIN_H
25 
26 #include <signal.h>
27 
28 #include "datatype/timestamp.h" /* for TimestampTz */
29 #include "pgtime.h" /* for pg_time_t */
30 
31 
32 #define InvalidPid (-1)
33 
34 
35 /*****************************************************************************
36  * System interrupt and critical section handling
37  *
38  * There are two types of interrupts that a running backend needs to accept
39  * without messing up its state: QueryCancel (SIGINT) and ProcDie (SIGTERM).
40  * In both cases, we need to be able to clean up the current transaction
41  * gracefully, so we can't respond to the interrupt instantaneously ---
42  * there's no guarantee that internal data structures would be self-consistent
43  * if the code is interrupted at an arbitrary instant. Instead, the signal
44  * handlers set flags that are checked periodically during execution.
45  *
46  * The CHECK_FOR_INTERRUPTS() macro is called at strategically located spots
47  * where it is normally safe to accept a cancel or die interrupt. In some
48  * cases, we invoke CHECK_FOR_INTERRUPTS() inside low-level subroutines that
49  * might sometimes be called in contexts that do *not* want to allow a cancel
50  * or die interrupt. The HOLD_INTERRUPTS() and RESUME_INTERRUPTS() macros
51  * allow code to ensure that no cancel or die interrupt will be accepted,
52  * even if CHECK_FOR_INTERRUPTS() gets called in a subroutine. The interrupt
53  * will be held off until CHECK_FOR_INTERRUPTS() is done outside any
54  * HOLD_INTERRUPTS() ... RESUME_INTERRUPTS() section.
55  *
56  * There is also a mechanism to prevent query cancel interrupts, while still
57  * allowing die interrupts: HOLD_CANCEL_INTERRUPTS() and
58  * RESUME_CANCEL_INTERRUPTS().
59  *
60  * Note that ProcessInterrupts() has also acquired a number of tasks that
61  * do not necessarily cause a query-cancel-or-die response. Hence, it's
62  * possible that it will just clear InterruptPending and return.
63  *
64  * INTERRUPTS_PENDING_CONDITION() can be checked to see whether an
65  * interrupt needs to be serviced, without trying to do so immediately.
66  * Some callers are also interested in INTERRUPTS_CAN_BE_PROCESSED(),
67  * which tells whether ProcessInterrupts is sure to clear the interrupt.
68  *
69  * Special mechanisms are used to let an interrupt be accepted when we are
70  * waiting for a lock or when we are waiting for command input (but, of
71  * course, only if the interrupt holdoff counter is zero). See the
72  * related code for details.
73  *
74  * A lost connection is handled similarly, although the loss of connection
75  * does not raise a signal, but is detected when we fail to write to the
76  * socket. If there was a signal for a broken connection, we could make use of
77  * it by setting ClientConnectionLost in the signal handler.
78  *
79  * A related, but conceptually distinct, mechanism is the "critical section"
80  * mechanism. A critical section not only holds off cancel/die interrupts,
81  * but causes any ereport(ERROR) or ereport(FATAL) to become ereport(PANIC)
82  * --- that is, a system-wide reset is forced. Needless to say, only really
83  * *critical* code should be marked as a critical section! Currently, this
84  * mechanism is only used for XLOG-related code.
85  *
86  *****************************************************************************/
87 
88 /* in globals.c */
89 /* these are marked volatile because they are set by signal handlers: */
90 extern PGDLLIMPORT volatile sig_atomic_t InterruptPending;
91 extern PGDLLIMPORT volatile sig_atomic_t QueryCancelPending;
92 extern PGDLLIMPORT volatile sig_atomic_t ProcDiePending;
93 extern PGDLLIMPORT volatile sig_atomic_t IdleInTransactionSessionTimeoutPending;
94 extern PGDLLIMPORT volatile sig_atomic_t TransactionTimeoutPending;
95 extern PGDLLIMPORT volatile sig_atomic_t IdleSessionTimeoutPending;
96 extern PGDLLIMPORT volatile sig_atomic_t ProcSignalBarrierPending;
97 extern PGDLLIMPORT volatile sig_atomic_t LogMemoryContextPending;
98 extern PGDLLIMPORT volatile sig_atomic_t IdleStatsUpdateTimeoutPending;
99 
100 extern PGDLLIMPORT volatile sig_atomic_t CheckClientConnectionPending;
101 extern PGDLLIMPORT volatile sig_atomic_t ClientConnectionLost;
102 
103 /* these are marked volatile because they are examined by signal handlers: */
106 extern PGDLLIMPORT volatile uint32 CritSectionCount;
107 
108 /* in tcop/postgres.c */
109 extern void ProcessInterrupts(void);
110 
111 /* Test whether an interrupt is pending */
112 #ifndef WIN32
113 #define INTERRUPTS_PENDING_CONDITION() \
114  (unlikely(InterruptPending))
115 #else
116 #define INTERRUPTS_PENDING_CONDITION() \
117  (unlikely(UNBLOCKED_SIGNAL_QUEUE()) ? pgwin32_dispatch_queued_signals() : 0, \
118  unlikely(InterruptPending))
119 #endif
120 
121 /* Service interrupt, if one is pending and it's safe to service it now */
122 #define CHECK_FOR_INTERRUPTS() \
123 do { \
124  if (INTERRUPTS_PENDING_CONDITION()) \
125  ProcessInterrupts(); \
126 } while(0)
127 
128 /* Is ProcessInterrupts() guaranteed to clear InterruptPending? */
129 #define INTERRUPTS_CAN_BE_PROCESSED() \
130  (InterruptHoldoffCount == 0 && CritSectionCount == 0 && \
131  QueryCancelHoldoffCount == 0)
132 
133 #define HOLD_INTERRUPTS() (InterruptHoldoffCount++)
134 
135 #define RESUME_INTERRUPTS() \
136 do { \
137  Assert(InterruptHoldoffCount > 0); \
138  InterruptHoldoffCount--; \
139 } while(0)
140 
141 #define HOLD_CANCEL_INTERRUPTS() (QueryCancelHoldoffCount++)
142 
143 #define RESUME_CANCEL_INTERRUPTS() \
144 do { \
145  Assert(QueryCancelHoldoffCount > 0); \
146  QueryCancelHoldoffCount--; \
147 } while(0)
148 
149 #define START_CRIT_SECTION() (CritSectionCount++)
150 
151 #define END_CRIT_SECTION() \
152 do { \
153  Assert(CritSectionCount > 0); \
154  CritSectionCount--; \
155 } while(0)
156 
157 
158 /*****************************************************************************
159  * globals.h -- *
160  *****************************************************************************/
161 
162 /*
163  * from utils/init/globals.c
164  */
165 extern PGDLLIMPORT pid_t PostmasterPid;
167 extern PGDLLIMPORT bool IsUnderPostmaster;
168 extern PGDLLIMPORT bool IsBinaryUpgrade;
169 
170 extern PGDLLIMPORT bool ExitOnAnyError;
171 
172 extern PGDLLIMPORT char *DataDir;
174 
175 extern PGDLLIMPORT int NBuffers;
176 extern PGDLLIMPORT int MaxBackends;
177 extern PGDLLIMPORT int MaxConnections;
180 
184 extern PGDLLIMPORT int notify_buffers;
188 
189 extern PGDLLIMPORT int MyProcPid;
192 extern PGDLLIMPORT struct Port *MyProcPort;
193 extern PGDLLIMPORT struct Latch *MyLatch;
195 extern PGDLLIMPORT int MyPMChildSlot;
196 
197 extern PGDLLIMPORT char OutputFileName[];
198 extern PGDLLIMPORT char my_exec_path[];
199 extern PGDLLIMPORT char pkglib_path[];
200 
201 #ifdef EXEC_BACKEND
202 extern PGDLLIMPORT char postgres_exec_path[];
203 #endif
204 
206 
208 
210 
211 /*
212  * Date/Time Configuration
213  *
214  * DateStyle defines the output formatting choice for date/time types:
215  * USE_POSTGRES_DATES specifies traditional Postgres format
216  * USE_ISO_DATES specifies ISO-compliant format
217  * USE_SQL_DATES specifies Oracle/Ingres-compliant format
218  * USE_GERMAN_DATES specifies German-style dd.mm/yyyy
219  *
220  * DateOrder defines the field order to be assumed when reading an
221  * ambiguous date (anything not in YYYY-MM-DD format, with a four-digit
222  * year field first, is taken to be ambiguous):
223  * DATEORDER_YMD specifies field order yy-mm-dd
224  * DATEORDER_DMY specifies field order dd-mm-yy ("European" convention)
225  * DATEORDER_MDY specifies field order mm-dd-yy ("US" convention)
226  *
227  * In the Postgres and SQL DateStyles, DateOrder also selects output field
228  * order: day comes before month in DMY style, else month comes before day.
229  *
230  * The user-visible "DateStyle" run-time parameter subsumes both of these.
231  */
232 
233 /* valid DateStyle values */
234 #define USE_POSTGRES_DATES 0
235 #define USE_ISO_DATES 1
236 #define USE_SQL_DATES 2
237 #define USE_GERMAN_DATES 3
238 #define USE_XSD_DATES 4
239 
240 /* valid DateOrder values */
241 #define DATEORDER_YMD 0
242 #define DATEORDER_DMY 1
243 #define DATEORDER_MDY 2
244 
245 extern PGDLLIMPORT int DateStyle;
246 extern PGDLLIMPORT int DateOrder;
247 
248 /*
249  * IntervalStyles
250  * INTSTYLE_POSTGRES Like Postgres < 8.4 when DateStyle = 'iso'
251  * INTSTYLE_POSTGRES_VERBOSE Like Postgres < 8.4 when DateStyle != 'iso'
252  * INTSTYLE_SQL_STANDARD SQL standard interval literals
253  * INTSTYLE_ISO_8601 ISO-8601-basic formatted intervals
254  */
255 #define INTSTYLE_POSTGRES 0
256 #define INTSTYLE_POSTGRES_VERBOSE 1
257 #define INTSTYLE_SQL_STANDARD 2
258 #define INTSTYLE_ISO_8601 3
259 
260 extern PGDLLIMPORT int IntervalStyle;
261 
262 #define MAXTZLEN 10 /* max TZ name len, not counting tr. null */
263 
264 extern PGDLLIMPORT bool enableFsync;
266 extern PGDLLIMPORT int work_mem;
267 extern PGDLLIMPORT double hash_mem_multiplier;
270 
271 /*
272  * Upper and lower hard limits for the buffer access strategy ring size
273  * specified by the VacuumBufferUsageLimit GUC and BUFFER_USAGE_LIMIT option
274  * to VACUUM and ANALYZE.
275  */
276 #define MIN_BAS_VAC_RING_SIZE_KB 128
277 #define MAX_BAS_VAC_RING_SIZE_KB (16 * 1024 * 1024)
278 
280 extern PGDLLIMPORT int VacuumCostPageHit;
283 extern PGDLLIMPORT int VacuumCostLimit;
284 extern PGDLLIMPORT double VacuumCostDelay;
285 
286 extern PGDLLIMPORT int64 VacuumPageHit;
287 extern PGDLLIMPORT int64 VacuumPageMiss;
288 extern PGDLLIMPORT int64 VacuumPageDirty;
289 
290 extern PGDLLIMPORT int VacuumCostBalance;
291 extern PGDLLIMPORT bool VacuumCostActive;
292 
293 
294 /* in tcop/postgres.c */
295 
296 typedef char *pg_stack_base_t;
297 
298 extern pg_stack_base_t set_stack_base(void);
299 extern void restore_stack_base(pg_stack_base_t base);
300 extern void check_stack_depth(void);
301 extern bool stack_is_too_deep(void);
302 
303 /* in tcop/utility.c */
304 extern void PreventCommandIfReadOnly(const char *cmdname);
305 extern void PreventCommandIfParallelMode(const char *cmdname);
306 extern void PreventCommandDuringRecovery(const char *cmdname);
307 
308 /*****************************************************************************
309  * pdir.h -- *
310  * POSTGRES directory path definitions. *
311  *****************************************************************************/
312 
313 /* flags to be OR'd to form sec_context */
314 #define SECURITY_LOCAL_USERID_CHANGE 0x0001
315 #define SECURITY_RESTRICTED_OPERATION 0x0002
316 #define SECURITY_NOFORCE_RLS 0x0004
317 
318 extern PGDLLIMPORT char *DatabasePath;
319 
320 /* now in utils/init/miscinit.c */
321 extern void InitPostmasterChild(void);
322 extern void InitStandaloneProcess(const char *argv0);
323 extern void InitProcessLocalLatch(void);
324 extern void SwitchToSharedLatch(void);
325 extern void SwitchBackToLocalLatch(void);
326 
327 /*
328  * MyBackendType indicates what kind of a backend this is.
329  */
330 typedef enum BackendType
331 {
333 
334  /* Backends and other backend-like processes */
341 
343 
344  /*
345  * Auxiliary processes. These have PGPROC entries, but they are not
346  * attached to any particular database. There can be only one of each of
347  * these running at a time.
348  *
349  * If you modify these, make sure to update NUM_AUXILIARY_PROCS and the
350  * glossary in the docs.
351  */
359 
360  /*
361  * Logger is not connected to shared memory and does not have a PGPROC
362  * entry.
363  */
366 
367 #define BACKEND_NUM_TYPES (B_LOGGER + 1)
368 
370 
371 #define AmAutoVacuumLauncherProcess() (MyBackendType == B_AUTOVAC_LAUNCHER)
372 #define AmAutoVacuumWorkerProcess() (MyBackendType == B_AUTOVAC_WORKER)
373 #define AmBackgroundWorkerProcess() (MyBackendType == B_BG_WORKER)
374 #define AmWalSenderProcess() (MyBackendType == B_WAL_SENDER)
375 #define AmLogicalSlotSyncWorkerProcess() (MyBackendType == B_SLOTSYNC_WORKER)
376 #define AmArchiverProcess() (MyBackendType == B_ARCHIVER)
377 #define AmBackgroundWriterProcess() (MyBackendType == B_BG_WRITER)
378 #define AmCheckpointerProcess() (MyBackendType == B_CHECKPOINTER)
379 #define AmStartupProcess() (MyBackendType == B_STARTUP)
380 #define AmWalReceiverProcess() (MyBackendType == B_WAL_RECEIVER)
381 #define AmWalSummarizerProcess() (MyBackendType == B_WAL_SUMMARIZER)
382 #define AmWalWriterProcess() (MyBackendType == B_WAL_WRITER)
383 
384 extern const char *GetBackendTypeDesc(BackendType backendType);
385 
386 extern void SetDatabasePath(const char *path);
387 extern void checkDataDir(void);
388 extern void SetDataDir(const char *dir);
389 extern void ChangeToDataDir(void);
390 
391 extern char *GetUserNameFromId(Oid roleid, bool noerr);
392 extern Oid GetUserId(void);
393 extern Oid GetOuterUserId(void);
394 extern Oid GetSessionUserId(void);
395 extern Oid GetAuthenticatedUserId(void);
396 extern void GetUserIdAndSecContext(Oid *userid, int *sec_context);
397 extern void SetUserIdAndSecContext(Oid userid, int sec_context);
398 extern bool InLocalUserIdChange(void);
399 extern bool InSecurityRestrictedOperation(void);
400 extern bool InNoForceRLSOperation(void);
401 extern void GetUserIdAndContext(Oid *userid, bool *sec_def_context);
402 extern void SetUserIdAndContext(Oid userid, bool sec_def_context);
403 extern void InitializeSessionUserId(const char *rolename, Oid roleid,
404  bool bypass_login_check);
405 extern void InitializeSessionUserIdStandalone(void);
406 extern void SetSessionAuthorization(Oid userid, bool is_superuser);
407 extern Oid GetCurrentRoleId(void);
408 extern void SetCurrentRoleId(Oid roleid, bool is_superuser);
409 extern void InitializeSystemUser(const char *authn_id,
410  const char *auth_method);
411 extern const char *GetSystemUser(void);
412 
413 /* in utils/misc/superuser.c */
414 extern bool superuser(void); /* current user is superuser */
415 extern bool superuser_arg(Oid roleid); /* given user is superuser */
416 
417 
418 /*****************************************************************************
419  * pmod.h -- *
420  * POSTGRES processing mode definitions. *
421  *****************************************************************************/
422 
423 /*
424  * Description:
425  * There are three processing modes in POSTGRES. They are
426  * BootstrapProcessing or "bootstrap," InitProcessing or
427  * "initialization," and NormalProcessing or "normal."
428  *
429  * The first two processing modes are used during special times. When the
430  * system state indicates bootstrap processing, transactions are all given
431  * transaction id "one" and are consequently guaranteed to commit. This mode
432  * is used during the initial generation of template databases.
433  *
434  * Initialization mode: used while starting a backend, until all normal
435  * initialization is complete. Some code behaves differently when executed
436  * in this mode to enable system bootstrapping.
437  *
438  * If a POSTGRES backend process is in normal mode, then all code may be
439  * executed normally.
440  */
441 
442 typedef enum ProcessingMode
443 {
444  BootstrapProcessing, /* bootstrap creation of template database */
445  InitProcessing, /* initializing system */
446  NormalProcessing, /* normal processing */
448 
450 
451 #define IsBootstrapProcessingMode() (Mode == BootstrapProcessing)
452 #define IsInitProcessingMode() (Mode == InitProcessing)
453 #define IsNormalProcessingMode() (Mode == NormalProcessing)
454 
455 #define GetProcessingMode() Mode
456 
457 #define SetProcessingMode(mode) \
458  do { \
459  Assert((mode) == BootstrapProcessing || \
460  (mode) == InitProcessing || \
461  (mode) == NormalProcessing); \
462  Mode = (mode); \
463  } while(0)
464 
465 
466 /*****************************************************************************
467  * pinit.h -- *
468  * POSTGRES initialization and cleanup definitions. *
469  *****************************************************************************/
470 
471 /* in utils/init/postinit.c */
472 /* flags for InitPostgres() */
473 #define INIT_PG_LOAD_SESSION_LIBS 0x0001
474 #define INIT_PG_OVERRIDE_ALLOW_CONNS 0x0002
475 #define INIT_PG_OVERRIDE_ROLE_LOGIN 0x0004
476 extern void pg_split_opts(char **argv, int *argcp, const char *optstr);
477 extern void InitializeMaxBackends(void);
478 extern void InitPostgres(const char *in_dbname, Oid dboid,
479  const char *username, Oid useroid,
480  bits32 flags,
481  char *out_dbname);
482 extern void BaseInit(void);
483 
484 /* in utils/init/miscinit.c */
485 extern PGDLLIMPORT bool IgnoreSystemIndexes;
492 
493 extern void CreateDataDirLockFile(bool amPostmaster);
494 extern void CreateSocketLockFile(const char *socketfile, bool amPostmaster,
495  const char *socketDir);
496 extern void TouchSocketLockFiles(void);
497 extern void AddToDataDirLockFile(int target_line, const char *str);
498 extern bool RecheckDataDirLockFile(void);
499 extern void ValidatePgVersion(const char *path);
500 extern void process_shared_preload_libraries(void);
501 extern void process_session_preload_libraries(void);
502 extern void process_shmem_requests(void);
503 extern void pg_bindtextdomain(const char *domain);
504 extern bool has_rolreplication(Oid roleid);
505 
506 typedef void (*shmem_request_hook_type) (void);
508 
510 extern void SerializeClientConnectionInfo(Size maxsize, char *start_address);
511 extern void RestoreClientConnectionInfo(char *conninfo);
512 
513 /* in executor/nodeHash.c */
514 extern size_t get_hash_memory_limit(void);
515 
516 #endif /* MISCADMIN_H */
unsigned int uint32
Definition: c.h:493
#define PGDLLIMPORT
Definition: c.h:1303
signed int int32
Definition: c.h:481
uint32 bits32
Definition: c.h:502
size_t Size
Definition: c.h:592
int64 TimestampTz
Definition: timestamp.h:39
PGDLLIMPORT int IntervalStyle
Definition: globals.c:124
PGDLLIMPORT shmem_request_hook_type shmem_request_hook
Definition: miscinit.c:1781
PGDLLIMPORT double VacuumCostDelay
Definition: globals.c:152
void ChangeToDataDir(void)
Definition: miscinit.c:454
char * GetUserNameFromId(Oid roleid, bool noerr)
Definition: miscinit.c:980
PGDLLIMPORT bool IsPostmasterEnvironment
Definition: globals.c:116
Oid GetOuterUserId(void)
Definition: miscinit.c:525
void process_shmem_requests(void)
Definition: miscinit.c:1871
PGDLLIMPORT struct Port * MyProcPort
Definition: globals.c:49
void restore_stack_base(pg_stack_base_t base)
Definition: postgres.c:3514
void InitializeMaxBackends(void)
Definition: postinit.c:575
void PreventCommandIfReadOnly(const char *cmdname)
Definition: utility.c:404
PGDLLIMPORT volatile uint32 InterruptHoldoffCount
Definition: globals.c:41
ProcessingMode
Definition: miscadmin.h:443
@ NormalProcessing
Definition: miscadmin.h:446
@ InitProcessing
Definition: miscadmin.h:445
@ BootstrapProcessing
Definition: miscadmin.h:444
void pg_split_opts(char **argv, int *argcp, const char *optstr)
Definition: postinit.c:517
void InitializeSessionUserId(const char *rolename, Oid roleid, bool bypass_login_check)
Definition: miscinit.c:733
void InitStandaloneProcess(const char *argv0)
Definition: miscinit.c:181
void SerializeClientConnectionInfo(Size maxsize, char *start_address)
Definition: miscinit.c:1043
void PreventCommandIfParallelMode(const char *cmdname)
Definition: utility.c:422
PGDLLIMPORT int commit_timestamp_buffers
Definition: globals.c:162
PGDLLIMPORT bool IsUnderPostmaster
Definition: globals.c:117
void InitializeSystemUser(const char *authn_id, const char *auth_method)
Definition: miscinit.c:867
PGDLLIMPORT int VacuumCostBalance
Definition: globals.c:158
PGDLLIMPORT Oid MyDatabaseTableSpace
Definition: globals.c:93
void InitializeSessionUserIdStandalone(void)
Definition: miscinit.c:837
void AddToDataDirLockFile(int target_line, const char *str)
Definition: miscinit.c:1511
void InitProcessLocalLatch(void)
Definition: miscinit.c:241
void BaseInit(void)
Definition: postinit.c:645
PGDLLIMPORT int maintenance_work_mem
Definition: globals.c:130
void GetUserIdAndSecContext(Oid *userid, int *sec_context)
Definition: miscinit.c:635
void SetSessionAuthorization(Oid userid, bool is_superuser)
Definition: miscinit.c:908
void process_session_preload_libraries(void)
Definition: miscinit.c:1857
PGDLLIMPORT bool enableFsync
Definition: globals.c:126
PGDLLIMPORT bool ExitOnAnyError
Definition: globals.c:120
PGDLLIMPORT volatile sig_atomic_t IdleInTransactionSessionTimeoutPending
Definition: globals.c:35
bool InSecurityRestrictedOperation(void)
Definition: miscinit.c:662
PGDLLIMPORT char * shared_preload_libraries_string
Definition: miscinit.c:1774
Oid GetUserId(void)
Definition: miscinit.c:514
PGDLLIMPORT bool allowSystemTableMods
Definition: globals.c:127
PGDLLIMPORT bool IsBinaryUpgrade
Definition: globals.c:118
Size EstimateClientConnectionInfoSpace(void)
Definition: miscinit.c:1027
PGDLLIMPORT volatile sig_atomic_t LogMemoryContextPending
Definition: globals.c:39
const char * GetSystemUser(void)
Definition: miscinit.c:574
PGDLLIMPORT int VacuumCostPageDirty
Definition: globals.c:150
PGDLLIMPORT int data_directory_mode
Definition: globals.c:74
Oid GetSessionUserId(void)
Definition: miscinit.c:548
void SetCurrentRoleId(Oid roleid, bool is_superuser)
Definition: miscinit.c:945
PGDLLIMPORT bool VacuumCostActive
Definition: globals.c:159
PGDLLIMPORT int subtransaction_buffers
Definition: globals.c:167
PGDLLIMPORT volatile sig_atomic_t InterruptPending
Definition: globals.c:30
PGDLLIMPORT bool IgnoreSystemIndexes
Definition: miscinit.c:80
Oid GetAuthenticatedUserId(void)
Definition: miscinit.c:583
PGDLLIMPORT int VacuumCostLimit
Definition: globals.c:151
PGDLLIMPORT bool MyDatabaseHasLoginEventTriggers
Definition: globals.c:95
PGDLLIMPORT volatile sig_atomic_t ProcSignalBarrierPending
Definition: globals.c:38
PGDLLIMPORT int MaxConnections
Definition: globals.c:140
PGDLLIMPORT int NBuffers
Definition: globals.c:139
bool InLocalUserIdChange(void)
Definition: miscinit.c:653
PGDLLIMPORT int VacuumCostPageHit
Definition: globals.c:148
PGDLLIMPORT bool process_shmem_requests_in_progress
Definition: miscinit.c:1782
void SetDatabasePath(const char *path)
Definition: miscinit.c:328
void InitPostmasterChild(void)
Definition: miscinit.c:95
void process_shared_preload_libraries(void)
Definition: miscinit.c:1843
PGDLLIMPORT volatile sig_atomic_t IdleStatsUpdateTimeoutPending
Definition: globals.c:40
PGDLLIMPORT int notify_buffers
Definition: globals.c:165
PGDLLIMPORT bool process_shared_preload_libraries_in_progress
Definition: miscinit.c:1778
PGDLLIMPORT struct Latch * MyLatch
Definition: globals.c:60
PGDLLIMPORT TimestampTz MyStartTimestamp
Definition: globals.c:47
PGDLLIMPORT char * DatabasePath
Definition: globals.c:101
const char * GetBackendTypeDesc(BackendType backendType)
Definition: miscinit.c:263
PGDLLIMPORT int MyPMChildSlot
Definition: globals.c:51
void TouchSocketLockFiles(void)
Definition: miscinit.c:1482
PGDLLIMPORT double hash_mem_multiplier
Definition: globals.c:129
size_t get_hash_memory_limit(void)
Definition: nodeHash.c:3595
PGDLLIMPORT volatile sig_atomic_t ClientConnectionLost
Definition: globals.c:34
void RestoreClientConnectionInfo(char *conninfo)
Definition: miscinit.c:1075
PGDLLIMPORT int DateOrder
Definition: globals.c:123
PGDLLIMPORT int64 VacuumPageDirty
Definition: globals.c:156
PGDLLIMPORT int max_parallel_maintenance_workers
Definition: globals.c:131
PGDLLIMPORT char * local_preload_libraries_string
Definition: miscinit.c:1775
PGDLLIMPORT BackendType MyBackendType
Definition: miscinit.c:63
bool InNoForceRLSOperation(void)
Definition: miscinit.c:671
PGDLLIMPORT int serializable_buffers
Definition: globals.c:166
PGDLLIMPORT volatile sig_atomic_t QueryCancelPending
Definition: globals.c:31
bool superuser_arg(Oid roleid)
Definition: superuser.c:56
PGDLLIMPORT char * session_preload_libraries_string
Definition: miscinit.c:1773
PGDLLIMPORT int multixact_member_buffers
Definition: globals.c:163
void PreventCommandDuringRecovery(const char *cmdname)
Definition: utility.c:441
PGDLLIMPORT volatile sig_atomic_t CheckClientConnectionPending
Definition: globals.c:33
void InitPostgres(const char *in_dbname, Oid dboid, const char *username, Oid useroid, bits32 flags, char *out_dbname)
Definition: postinit.c:736
bool stack_is_too_deep(void)
Definition: postgres.c:3545
PGDLLIMPORT pg_time_t MyStartTime
Definition: globals.c:46
PGDLLIMPORT volatile sig_atomic_t ProcDiePending
Definition: globals.c:32
void ProcessInterrupts(void)
Definition: postgres.c:3244
PGDLLIMPORT int VacuumBufferUsageLimit
Definition: globals.c:146
PGDLLIMPORT char pkglib_path[]
Definition: globals.c:79
PGDLLIMPORT char my_exec_path[]
Definition: globals.c:78
Oid GetCurrentRoleId(void)
Definition: miscinit.c:924
void checkDataDir(void)
Definition: miscinit.c:341
bool superuser(void)
Definition: superuser.c:46
PGDLLIMPORT pid_t PostmasterPid
Definition: globals.c:103
PGDLLIMPORT int32 MyCancelKey
Definition: globals.c:50
PGDLLIMPORT int VacuumCostPageMiss
Definition: globals.c:149
PGDLLIMPORT volatile uint32 QueryCancelHoldoffCount
Definition: globals.c:42
PGDLLIMPORT int64 VacuumPageMiss
Definition: globals.c:155
PGDLLIMPORT int work_mem
Definition: globals.c:128
void SwitchToSharedLatch(void)
Definition: miscinit.c:221
PGDLLIMPORT int multixact_offset_buffers
Definition: globals.c:164
PGDLLIMPORT int DateStyle
Definition: globals.c:122
void GetUserIdAndContext(Oid *userid, bool *sec_def_context)
Definition: miscinit.c:684
BackendType
Definition: miscadmin.h:331
@ B_WAL_SUMMARIZER
Definition: miscadmin.h:357
@ B_WAL_WRITER
Definition: miscadmin.h:358
@ B_WAL_RECEIVER
Definition: miscadmin.h:356
@ B_CHECKPOINTER
Definition: miscadmin.h:354
@ B_WAL_SENDER
Definition: miscadmin.h:339
@ B_LOGGER
Definition: miscadmin.h:364
@ B_STARTUP
Definition: miscadmin.h:355
@ B_BG_WORKER
Definition: miscadmin.h:338
@ B_INVALID
Definition: miscadmin.h:332
@ B_STANDALONE_BACKEND
Definition: miscadmin.h:342
@ B_BG_WRITER
Definition: miscadmin.h:353
@ B_BACKEND
Definition: miscadmin.h:335
@ B_ARCHIVER
Definition: miscadmin.h:352
@ B_AUTOVAC_LAUNCHER
Definition: miscadmin.h:336
@ B_SLOTSYNC_WORKER
Definition: miscadmin.h:340
@ B_AUTOVAC_WORKER
Definition: miscadmin.h:337
void SetDataDir(const char *dir)
Definition: miscinit.c:434
PGDLLIMPORT volatile sig_atomic_t IdleSessionTimeoutPending
Definition: globals.c:37
PGDLLIMPORT Oid MyDatabaseId
Definition: globals.c:91
void SetUserIdAndContext(Oid userid, bool sec_def_context)
Definition: miscinit.c:691
PGDLLIMPORT char OutputFileName[]
Definition: globals.c:76
PGDLLIMPORT int transaction_buffers
Definition: globals.c:168
PGDLLIMPORT int max_worker_processes
Definition: globals.c:141
PGDLLIMPORT ProcessingMode Mode
Definition: miscinit.c:61
PGDLLIMPORT int64 VacuumPageHit
Definition: globals.c:154
void(* shmem_request_hook_type)(void)
Definition: miscadmin.h:506
void pg_bindtextdomain(const char *domain)
Definition: miscinit.c:1880
bool has_rolreplication(Oid roleid)
Definition: miscinit.c:711
PGDLLIMPORT char * DataDir
Definition: globals.c:68
PGDLLIMPORT int MaxBackends
Definition: globals.c:143
char * pg_stack_base_t
Definition: miscadmin.h:296
PGDLLIMPORT bool process_shared_preload_libraries_done
Definition: miscinit.c:1779
void ValidatePgVersion(const char *path)
Definition: miscinit.c:1710
PGDLLIMPORT volatile uint32 CritSectionCount
Definition: globals.c:43
void SetUserIdAndSecContext(Oid userid, int sec_context)
Definition: miscinit.c:642
bool RecheckDataDirLockFile(void)
Definition: miscinit.c:1638
void check_stack_depth(void)
Definition: postgres.c:3531
pg_stack_base_t set_stack_base(void)
Definition: postgres.c:3481
void CreateDataDirLockFile(bool amPostmaster)
Definition: miscinit.c:1455
void SwitchBackToLocalLatch(void)
Definition: miscinit.c:248
void CreateSocketLockFile(const char *socketfile, bool amPostmaster, const char *socketDir)
Definition: miscinit.c:1464
PGDLLIMPORT volatile sig_atomic_t TransactionTimeoutPending
Definition: globals.c:36
PGDLLIMPORT int max_parallel_workers
Definition: globals.c:142
PGDLLIMPORT int MyProcPid
Definition: globals.c:45
static char * argv0
Definition: pg_ctl.c:92
static bool is_superuser(Archive *fout)
Definition: pg_dump.c:4614
const char * username
Definition: pgbench.c:296
int64 pg_time_t
Definition: pgtime.h:23
unsigned int Oid
Definition: postgres_ext.h:31
Definition: latch.h:113
Definition: libpq-be.h:133