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src/backend/utils/init/globals.c
170 строк
5 KB
Andrew Dunstan
Add errdetail() with PID and UID about source of termination signal.
07 апр 2026, 17:22
07 апр 2026, 17:22
55890a9
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/*------------------------------------------------------------------------- * * globals.c * global variable declarations * * Portions Copyright (c) 1996-2026, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * * IDENTIFICATION * src/backend/utils/init/globals.c * * NOTES * Globals used all over the place should be declared here and not * in other modules. * *------------------------------------------------------------------------- */ #include "postgres.h" #include "common/file_perm.h" #include "libpq/libpq-be.h" #include "libpq/pqcomm.h" #include "miscadmin.h" #include "postmaster/postmaster.h" #include "storage/procnumber.h" #include "storage/procsignal.h" ProtocolVersion FrontendProtocol; volatile sig_atomic_t InterruptPending = false; volatile sig_atomic_t QueryCancelPending = false; volatile sig_atomic_t ProcDiePending = false; volatile sig_atomic_t CheckClientConnectionPending = false; volatile sig_atomic_t ClientConnectionLost = false; volatile sig_atomic_t IdleInTransactionSessionTimeoutPending = false; volatile sig_atomic_t TransactionTimeoutPending = false; volatile sig_atomic_t IdleSessionTimeoutPending = false; volatile sig_atomic_t ProcSignalBarrierPending = false; volatile sig_atomic_t LogMemoryContextPending = false; volatile sig_atomic_t IdleStatsUpdateTimeoutPending = false; volatile uint32 InterruptHoldoffCount = 0; volatile uint32 QueryCancelHoldoffCount = 0; volatile uint32 CritSectionCount = 0; volatile int ProcDieSenderPid = 0; volatile int ProcDieSenderUid = 0; int MyProcPid; pg_time_t MyStartTime; TimestampTz MyStartTimestamp; struct ClientSocket *MyClientSocket; struct Port *MyProcPort; uint8 MyCancelKey[MAX_CANCEL_KEY_LENGTH]; int MyCancelKeyLength = 0; int MyPMChildSlot; /* * MyLatch points to the latch that should be used for signal handling by the * current process. It will either point to a process local latch if the * current process does not have a PGPROC entry in that moment, or to * PGPROC->procLatch if it has. Thus it can always be used in signal handlers, * without checking for its existence. */ struct Latch *MyLatch; /* * DataDir is the absolute path to the top level of the PGDATA directory tree. * Except during early startup, this is also the server's working directory; * most code therefore can simply use relative paths and not reference DataDir * explicitly. */ char *DataDir = NULL; /* * Mode of the data directory. The default is 0700 but it may be changed in * checkDataDir() to 0750 if the data directory actually has that mode. */ int data_directory_mode = PG_DIR_MODE_OWNER; char OutputFileName[MAXPGPATH]; /* debugging output file */ char my_exec_path[MAXPGPATH]; /* full path to my executable */ char pkglib_path[MAXPGPATH]; /* full path to lib directory */ #ifdef EXEC_BACKEND char postgres_exec_path[MAXPGPATH]; /* full path to backend */ /* note: currently this is not valid in backend processes */ #endif ProcNumber MyProcNumber = INVALID_PROC_NUMBER; ProcNumber ParallelLeaderProcNumber = INVALID_PROC_NUMBER; Oid MyDatabaseId = InvalidOid; Oid MyDatabaseTableSpace = InvalidOid; bool MyDatabaseHasLoginEventTriggers = false; /* * DatabasePath is the path (relative to DataDir) of my database's * primary directory, ie, its directory in the default tablespace. */ char *DatabasePath = NULL; pid_t PostmasterPid = 0; /* * IsPostmasterEnvironment is true in a postmaster process and any postmaster * child process; it is false in a standalone process (bootstrap or * standalone backend). IsUnderPostmaster is true in postmaster child * processes. Note that "child process" includes all children, not only * regular backends. These should be set correctly as early as possible * in the execution of a process, so that error handling will do the right * things if an error should occur during process initialization. * * These are initialized for the bootstrap/standalone case. */ bool IsPostmasterEnvironment = false; bool IsUnderPostmaster = false; bool IsBinaryUpgrade = false; bool ExitOnAnyError = false; int DateStyle = USE_ISO_DATES; int DateOrder = DATEORDER_MDY; int IntervalStyle = INTSTYLE_POSTGRES; bool enableFsync = true; bool allowSystemTableMods = false; int work_mem = 4096; double hash_mem_multiplier = 2.0; int maintenance_work_mem = 65536; int max_parallel_maintenance_workers = 2; /* * Primary determinants of sizes of shared-memory structures. * * MaxBackends is computed by PostmasterMain after modules have had a chance to * register background workers. */ int NBuffers = 16384; int MaxConnections = 100; int max_worker_processes = 8; int max_parallel_workers = 8; int autovacuum_max_parallel_workers = 0; int MaxBackends = 0; /* GUC parameters for vacuum */ int VacuumBufferUsageLimit = 2048; int VacuumCostPageHit = 1; int VacuumCostPageMiss = 2; int VacuumCostPageDirty = 20; int VacuumCostLimit = 200; double VacuumCostDelay = 0; int VacuumCostBalance = 0; /* working state for vacuum */ bool VacuumCostActive = false; /* configurable SLRU buffer sizes */ int commit_timestamp_buffers = 0; int multixact_member_buffers = 32; int multixact_offset_buffers = 16; int notify_buffers = 16; int serializable_buffers = 32; int subtransaction_buffers = 0; int transaction_buffers = 0;