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Massive commit to run PGINDENT on all *.c and *.h files.
This commit is contained in:
Bruce Momjian
@@ -1,17 +1,17 @@
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/*-------------------------------------------------------------------------
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*
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* sinval.c--
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* POSTGRES shared cache invalidation communication code.
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* POSTGRES shared cache invalidation communication code.
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*
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* Copyright (c) 1994, Regents of the University of California
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/storage/ipc/sinval.c,v 1.7 1997/08/12 22:53:58 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/storage/ipc/sinval.c,v 1.8 1997/09/07 04:48:43 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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/* #define INVALIDDEBUG 1 */
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/* #define INVALIDDEBUG 1 */
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#include <sys/types.h>
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@@ -22,150 +22,156 @@
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#include "storage/sinvaladt.h"
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#include "storage/spin.h"
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extern SISeg *shmInvalBuffer;/* the shared buffer segment, set by*/
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/* SISegmentAttach() */
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extern BackendId MyBackendId;
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extern BackendTag MyBackendTag;
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extern SISeg *shmInvalBuffer; /* the shared buffer segment, set by */
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/* SISegmentAttach() */
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extern BackendId MyBackendId;
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extern BackendTag MyBackendTag;
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SPINLOCK SInvalLock = (SPINLOCK) NULL;
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/****************************************************************************/
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/* CreateSharedInvalidationState(key) Create a buffer segment */
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/* */
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/* should be called only by the POSTMASTER */
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/* CreateSharedInvalidationState(key) Create a buffer segment */
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/* */
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/* should be called only by the POSTMASTER */
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/****************************************************************************/
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void
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CreateSharedInvalidationState(IPCKey key)
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{
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int status;
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/* REMOVED
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SISyncKill(IPCKeyGetSIBufferMemorySemaphoreKey(key));
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SISyncInit(IPCKeyGetSIBufferMemorySemaphoreKey(key));
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*/
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/* SInvalLock gets set in spin.c, during spinlock init */
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status = SISegmentInit(true, IPCKeyGetSIBufferMemoryBlock(key));
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if (status == -1) {
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elog(FATAL, "CreateSharedInvalidationState: failed segment init");
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}
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int status;
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/*
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* REMOVED SISyncKill(IPCKeyGetSIBufferMemorySemaphoreKey(key));
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* SISyncInit(IPCKeyGetSIBufferMemorySemaphoreKey(key));
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*/
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/* SInvalLock gets set in spin.c, during spinlock init */
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status = SISegmentInit(true, IPCKeyGetSIBufferMemoryBlock(key));
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if (status == -1)
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{
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elog(FATAL, "CreateSharedInvalidationState: failed segment init");
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}
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}
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/****************************************************************************/
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/* AttachSharedInvalidationState(key) Attach a buffer segment */
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/* */
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/* should be called only by the POSTMASTER */
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/* AttachSharedInvalidationState(key) Attach a buffer segment */
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/* */
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/* should be called only by the POSTMASTER */
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/****************************************************************************/
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void
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AttachSharedInvalidationState(IPCKey key)
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{
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int status;
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if (key == PrivateIPCKey) {
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CreateSharedInvalidationState(key);
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return;
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}
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/* SInvalLock gets set in spin.c, during spinlock init */
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status = SISegmentInit(false, IPCKeyGetSIBufferMemoryBlock(key));
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if (status == -1) {
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elog(FATAL, "AttachSharedInvalidationState: failed segment init");
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}
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int status;
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if (key == PrivateIPCKey)
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{
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CreateSharedInvalidationState(key);
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return;
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}
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/* SInvalLock gets set in spin.c, during spinlock init */
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status = SISegmentInit(false, IPCKeyGetSIBufferMemoryBlock(key));
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if (status == -1)
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{
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elog(FATAL, "AttachSharedInvalidationState: failed segment init");
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}
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}
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void
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InitSharedInvalidationState(void)
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{
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SpinAcquire(SInvalLock);
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if (!SIBackendInit(shmInvalBuffer))
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SpinAcquire(SInvalLock);
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if (!SIBackendInit(shmInvalBuffer))
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{
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SpinRelease(SInvalLock);
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elog(FATAL, "Backend cache invalidation initialization failed");
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SpinRelease(SInvalLock);
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elog(FATAL, "Backend cache invalidation initialization failed");
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}
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SpinRelease(SInvalLock);
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SpinRelease(SInvalLock);
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}
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/*
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* RegisterSharedInvalid --
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* Returns a new local cache invalidation state containing a new entry.
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* Returns a new local cache invalidation state containing a new entry.
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*
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* Note:
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* Assumes hash index is valid.
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* Assumes item pointer is valid.
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* Assumes hash index is valid.
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* Assumes item pointer is valid.
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*/
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/****************************************************************************/
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/* RegisterSharedInvalid(cacheId, hashIndex, pointer) */
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/* */
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/* register a message in the buffer */
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/* should be called by a backend */
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/* RegisterSharedInvalid(cacheId, hashIndex, pointer) */
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/* */
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/* register a message in the buffer */
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/* should be called by a backend */
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/****************************************************************************/
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void
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RegisterSharedInvalid(int cacheId, /* XXX */
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Index hashIndex,
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ItemPointer pointer)
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RegisterSharedInvalid(int cacheId, /* XXX */
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Index hashIndex,
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ItemPointer pointer)
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{
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SharedInvalidData newInvalid;
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/*
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* This code has been hacked to accept two types of messages. This might
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* be treated more generally in the future.
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*
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* (1)
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* cacheId= system cache id
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* hashIndex= system cache hash index for a (possibly) cached tuple
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* pointer= pointer of (possibly) cached tuple
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*
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* (2)
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* cacheId= special non-syscache id
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* hashIndex= object id contained in (possibly) cached relation descriptor
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* pointer= null
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*/
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newInvalid.cacheId = cacheId;
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newInvalid.hashIndex = hashIndex;
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if (ItemPointerIsValid(pointer)) {
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ItemPointerCopy(pointer, &newInvalid.pointerData);
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} else {
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ItemPointerSetInvalid(&newInvalid.pointerData);
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}
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SpinAcquire(SInvalLock);
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if (!SISetDataEntry(shmInvalBuffer, &newInvalid)) {
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/* buffer full */
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/* release a message, mark process cache states to be invalid */
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SISetProcStateInvalid(shmInvalBuffer);
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if (!SIDelDataEntry(shmInvalBuffer)) {
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/* inconsistent buffer state -- shd never happen */
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SpinRelease(SInvalLock);
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elog(FATAL, "RegisterSharedInvalid: inconsistent buffer state");
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}
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/* write again */
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SISetDataEntry(shmInvalBuffer, &newInvalid);
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}
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SpinRelease(SInvalLock);
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SharedInvalidData newInvalid;
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/*
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* This code has been hacked to accept two types of messages. This
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* might be treated more generally in the future.
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*
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* (1) cacheId= system cache id hashIndex= system cache hash index for a
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* (possibly) cached tuple pointer= pointer of (possibly) cached tuple
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*
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* (2) cacheId= special non-syscache id hashIndex= object id contained in
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* (possibly) cached relation descriptor pointer= null
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*/
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newInvalid.cacheId = cacheId;
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newInvalid.hashIndex = hashIndex;
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if (ItemPointerIsValid(pointer))
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{
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ItemPointerCopy(pointer, &newInvalid.pointerData);
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}
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else
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{
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ItemPointerSetInvalid(&newInvalid.pointerData);
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}
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SpinAcquire(SInvalLock);
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if (!SISetDataEntry(shmInvalBuffer, &newInvalid))
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{
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/* buffer full */
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/* release a message, mark process cache states to be invalid */
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SISetProcStateInvalid(shmInvalBuffer);
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if (!SIDelDataEntry(shmInvalBuffer))
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{
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/* inconsistent buffer state -- shd never happen */
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SpinRelease(SInvalLock);
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elog(FATAL, "RegisterSharedInvalid: inconsistent buffer state");
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}
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/* write again */
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SISetDataEntry(shmInvalBuffer, &newInvalid);
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}
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SpinRelease(SInvalLock);
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}
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/*
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* InvalidateSharedInvalid --
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* Processes all entries in a shared cache invalidation state.
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* Processes all entries in a shared cache invalidation state.
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*/
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/****************************************************************************/
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/* InvalidateSharedInvalid(invalFunction, resetFunction) */
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/* */
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/* invalidate a message in the buffer (read and clean up) */
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/* should be called by a backend */
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/* InvalidateSharedInvalid(invalFunction, resetFunction) */
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/* */
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/* invalidate a message in the buffer (read and clean up) */
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/* should be called by a backend */
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/****************************************************************************/
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void
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InvalidateSharedInvalid(void (*invalFunction)(),
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void (*resetFunction)())
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InvalidateSharedInvalid(void (*invalFunction) (),
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void (*resetFunction) ())
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{
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SpinAcquire(SInvalLock);
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SIReadEntryData(shmInvalBuffer, MyBackendId,
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invalFunction, resetFunction);
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SIDelExpiredDataEntries(shmInvalBuffer);
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SpinRelease(SInvalLock);
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SpinAcquire(SInvalLock);
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SIReadEntryData(shmInvalBuffer, MyBackendId,
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invalFunction, resetFunction);
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SIDelExpiredDataEntries(shmInvalBuffer);
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SpinRelease(SInvalLock);
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}
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