subsystemlist.h

Go to the documentation of this file.

/*---------------------------------------------------------------------------
 * subsystemlist.h
 *
 * List of initialization callbacks of built-in subsystems. This is kept in
 * its own source file for possible use by automatic tools.
 * PG_SHMEM_SUBSYSTEM is defined in the callers depending on how the list is
 * used.
 *
 * Portions Copyright (c) 1996-2026, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/storage/subsystemlist.h
 *---------------------------------------------------------------------------
 */
 
/* there is deliberately not an #ifndef SUBSYSTEMLIST_H here */
 
/*
 * Note: there are some inter-dependencies between these, so the order of some
 * of these matter.
 */
 
/*
 * LWLocks first, in case any of the other shmem init functions use LWLocks.
 * (Nothing else can be running during startup, so they don't need to do any
 * locking yet, but we nevertheless allow it.)
 */
PG_SHMEM_SUBSYSTEM(LWLockCallbacks)
 
PG_SHMEM_SUBSYSTEM(dsm_shmem_callbacks)
PG_SHMEM_SUBSYSTEM(DSMRegistryShmemCallbacks)
 
/* xlog, clog, and buffers */
PG_SHMEM_SUBSYSTEM(VarsupShmemCallbacks)
PG_SHMEM_SUBSYSTEM(XLOGShmemCallbacks)
PG_SHMEM_SUBSYSTEM(XLogPrefetchShmemCallbacks)
PG_SHMEM_SUBSYSTEM(XLogRecoveryShmemCallbacks)
PG_SHMEM_SUBSYSTEM(CLOGShmemCallbacks)
PG_SHMEM_SUBSYSTEM(CommitTsShmemCallbacks)
PG_SHMEM_SUBSYSTEM(SUBTRANSShmemCallbacks)
PG_SHMEM_SUBSYSTEM(MultiXactShmemCallbacks)
PG_SHMEM_SUBSYSTEM(BufferManagerShmemCallbacks)
PG_SHMEM_SUBSYSTEM(StrategyCtlShmemCallbacks)
PG_SHMEM_SUBSYSTEM(BufTableShmemCallbacks)
 
/* lock manager */
PG_SHMEM_SUBSYSTEM(LockManagerShmemCallbacks)
 
/* predicate lock manager */
PG_SHMEM_SUBSYSTEM(PredicateLockShmemCallbacks)
 
/* process table */
PG_SHMEM_SUBSYSTEM(ProcGlobalShmemCallbacks)
PG_SHMEM_SUBSYSTEM(ProcArrayShmemCallbacks)
PG_SHMEM_SUBSYSTEM(BackendStatusShmemCallbacks)
PG_SHMEM_SUBSYSTEM(TwoPhaseShmemCallbacks)
PG_SHMEM_SUBSYSTEM(BackgroundWorkerShmemCallbacks)
 
/* shared-inval messaging */
PG_SHMEM_SUBSYSTEM(SharedInvalShmemCallbacks)
 
/* interprocess signaling mechanisms */
PG_SHMEM_SUBSYSTEM(PMSignalShmemCallbacks)
PG_SHMEM_SUBSYSTEM(ProcSignalShmemCallbacks)
PG_SHMEM_SUBSYSTEM(CheckpointerShmemCallbacks)
PG_SHMEM_SUBSYSTEM(AutoVacuumShmemCallbacks)
PG_SHMEM_SUBSYSTEM(ReplicationSlotsShmemCallbacks)
PG_SHMEM_SUBSYSTEM(ReplicationOriginShmemCallbacks)
PG_SHMEM_SUBSYSTEM(WalSndShmemCallbacks)
PG_SHMEM_SUBSYSTEM(WalRcvShmemCallbacks)
PG_SHMEM_SUBSYSTEM(WalSummarizerShmemCallbacks)
PG_SHMEM_SUBSYSTEM(PgArchShmemCallbacks)
PG_SHMEM_SUBSYSTEM(ApplyLauncherShmemCallbacks)
PG_SHMEM_SUBSYSTEM(SlotSyncShmemCallbacks)
 
/* other modules that need some shared memory space */
PG_SHMEM_SUBSYSTEM(BTreeShmemCallbacks)
PG_SHMEM_SUBSYSTEM(SyncScanShmemCallbacks)
PG_SHMEM_SUBSYSTEM(AsyncShmemCallbacks)
PG_SHMEM_SUBSYSTEM(StatsShmemCallbacks)
PG_SHMEM_SUBSYSTEM(WaitEventCustomShmemCallbacks)
#ifdef USE_INJECTION_POINTS
PG_SHMEM_SUBSYSTEM(InjectionPointShmemCallbacks)
#endif
PG_SHMEM_SUBSYSTEM(WaitLSNShmemCallbacks)
PG_SHMEM_SUBSYSTEM(LogicalDecodingCtlShmemCallbacks)
PG_SHMEM_SUBSYSTEM(DataChecksumsShmemCallbacks)
 
/* AIO subsystem. This delegates to the method-specific callbacks */
PG_SHMEM_SUBSYSTEM(AioShmemCallbacks)