#include "postgres.h"
#include "access/hash.h"
#include "storage/predicate.h"
#include "storage/proc.h"
#include "utils/memutils.h"
#include "utils/rel.h"
#include "utils/resowner_private.h"
#include "utils/snapmgr.h"

Include dependency graph for resowner.c:

Data Structures
struct	ResourceArray

struct	ResourceOwnerData

struct	ResourceReleaseCallbackItem

Macros
#define	FileGetDatum(file) Int32GetDatum(file)

#define	DatumGetFile(datum) ((File) DatumGetInt32(datum))

#define	BufferGetDatum(buffer) Int32GetDatum(buffer)

#define	DatumGetBuffer(datum) ((Buffer) DatumGetInt32(datum))

#define	RESARRAY_INIT_SIZE 16

#define	RESARRAY_MAX_ARRAY 64

#define	RESARRAY_IS_ARRAY(resarr) ((resarr)->capacity <= RESARRAY_MAX_ARRAY)

#define	RESARRAY_MAX_ITEMS(capacity) ((capacity) <= RESARRAY_MAX_ARRAY ? (capacity) : (capacity)/4 * 3)

#define	MAX_RESOWNER_LOCKS 15

Typedefs
typedef struct ResourceArray	ResourceArray

typedef struct ResourceOwnerData	ResourceOwnerData

typedef struct ResourceReleaseCallbackItem	ResourceReleaseCallbackItem

Functions
static void	ResourceArrayInit (ResourceArray *resarr, Datum invalidval)

static void	ResourceArrayEnlarge (ResourceArray *resarr)

static void	ResourceArrayAdd (ResourceArray *resarr, Datum value)

static bool	ResourceArrayRemove (ResourceArray *resarr, Datum value)

static bool	ResourceArrayGetAny (ResourceArray resarr, Datum value)

static void	ResourceArrayFree (ResourceArray *resarr)

static void	ResourceOwnerReleaseInternal (ResourceOwner owner, ResourceReleasePhase phase, bool isCommit, bool isTopLevel)

static void	PrintRelCacheLeakWarning (Relation rel)

static void	PrintPlanCacheLeakWarning (CachedPlan *plan)

static void	PrintTupleDescLeakWarning (TupleDesc tupdesc)

static void	PrintSnapshotLeakWarning (Snapshot snapshot)

static void	PrintFileLeakWarning (File file)

static void	PrintDSMLeakWarning (dsm_segment *seg)

ResourceOwner	ResourceOwnerCreate (ResourceOwner parent, const char *name)

void	ResourceOwnerRelease (ResourceOwner owner, ResourceReleasePhase phase, bool isCommit, bool isTopLevel)

void	ResourceOwnerDelete (ResourceOwner owner)

ResourceOwner	ResourceOwnerGetParent (ResourceOwner owner)

void	ResourceOwnerNewParent (ResourceOwner owner, ResourceOwner newparent)

void	RegisterResourceReleaseCallback (ResourceReleaseCallback callback, void *arg)

void	UnregisterResourceReleaseCallback (ResourceReleaseCallback callback, void *arg)

void	ResourceOwnerEnlargeBuffers (ResourceOwner owner)

void	ResourceOwnerRememberBuffer (ResourceOwner owner, Buffer buffer)

void	ResourceOwnerForgetBuffer (ResourceOwner owner, Buffer buffer)

void	ResourceOwnerRememberLock (ResourceOwner owner, LOCALLOCK *locallock)

void	ResourceOwnerForgetLock (ResourceOwner owner, LOCALLOCK *locallock)

void	ResourceOwnerEnlargeCatCacheRefs (ResourceOwner owner)

void	ResourceOwnerRememberCatCacheRef (ResourceOwner owner, HeapTuple tuple)

void	ResourceOwnerForgetCatCacheRef (ResourceOwner owner, HeapTuple tuple)

void	ResourceOwnerEnlargeCatCacheListRefs (ResourceOwner owner)

void	ResourceOwnerRememberCatCacheListRef (ResourceOwner owner, CatCList *list)

void	ResourceOwnerForgetCatCacheListRef (ResourceOwner owner, CatCList *list)

void	ResourceOwnerEnlargeRelationRefs (ResourceOwner owner)

void	ResourceOwnerRememberRelationRef (ResourceOwner owner, Relation rel)

void	ResourceOwnerForgetRelationRef (ResourceOwner owner, Relation rel)

void	ResourceOwnerEnlargePlanCacheRefs (ResourceOwner owner)

void	ResourceOwnerRememberPlanCacheRef (ResourceOwner owner, CachedPlan *plan)

void	ResourceOwnerForgetPlanCacheRef (ResourceOwner owner, CachedPlan *plan)

void	ResourceOwnerEnlargeTupleDescs (ResourceOwner owner)

void	ResourceOwnerRememberTupleDesc (ResourceOwner owner, TupleDesc tupdesc)

void	ResourceOwnerForgetTupleDesc (ResourceOwner owner, TupleDesc tupdesc)

void	ResourceOwnerEnlargeSnapshots (ResourceOwner owner)

void	ResourceOwnerRememberSnapshot (ResourceOwner owner, Snapshot snapshot)

void	ResourceOwnerForgetSnapshot (ResourceOwner owner, Snapshot snapshot)

void	ResourceOwnerEnlargeFiles (ResourceOwner owner)

void	ResourceOwnerRememberFile (ResourceOwner owner, File file)

void	ResourceOwnerForgetFile (ResourceOwner owner, File file)

void	ResourceOwnerEnlargeDSMs (ResourceOwner owner)

void	ResourceOwnerRememberDSM (ResourceOwner owner, dsm_segment *seg)

void	ResourceOwnerForgetDSM (ResourceOwner owner, dsm_segment *seg)

Variables
ResourceOwner	CurrentResourceOwner = NULL

ResourceOwner	CurTransactionResourceOwner = NULL

ResourceOwner	TopTransactionResourceOwner = NULL

static ResourceReleaseCallbackItem *	ResourceRelease_callbacks = NULL

Macro Definition Documentation

#define BufferGetDatum ( buffer ) Int32GetDatum(buffer)

Definition at line 41 of file resowner.c.

Referenced by ResourceOwnerCreate(), ResourceOwnerForgetBuffer(), and ResourceOwnerRememberBuffer().

#define DatumGetBuffer ( datum ) ((Buffer) DatumGetInt32(datum))

Definition at line 42 of file resowner.c.

Referenced by ResourceOwnerReleaseInternal().

#define DatumGetFile ( datum ) ((File) DatumGetInt32(datum))

Definition at line 40 of file resowner.c.

Referenced by ResourceOwnerReleaseInternal().

#define FileGetDatum ( file ) Int32GetDatum(file)

Definition at line 39 of file resowner.c.

Referenced by ResourceOwnerCreate(), ResourceOwnerForgetFile(), and ResourceOwnerRememberFile().

#define MAX_RESOWNER_LOCKS 15

Definition at line 105 of file resowner.c.

Referenced by ResourceOwnerDelete(), ResourceOwnerForgetLock(), ResourceOwnerReleaseInternal(), and ResourceOwnerRememberLock().

#define RESARRAY_INIT_SIZE 16

Definition at line 74 of file resowner.c.

Referenced by ResourceArrayEnlarge().

#define RESARRAY_IS_ARRAY ( resarr ) ((resarr)->capacity <= RESARRAY_MAX_ARRAY)

Definition at line 80 of file resowner.c.

Referenced by ResourceArrayAdd(), ResourceArrayGetAny(), and ResourceArrayRemove().

#define RESARRAY_MAX_ARRAY 64

Definition at line 79 of file resowner.c.

#define RESARRAY_MAX_ITEMS ( capacity ) ((capacity) <= RESARRAY_MAX_ARRAY ? (capacity) : (capacity)/4 * 3)

Definition at line 86 of file resowner.c.

Referenced by ResourceArrayEnlarge().

Typedef Documentation

typedef struct ResourceArray ResourceArray

typedef struct ResourceOwnerData ResourceOwnerData

typedef struct ResourceReleaseCallbackItem ResourceReleaseCallbackItem

Function Documentation

static void PrintDSMLeakWarning ( dsm_segment * seg )

static

Definition at line 1265 of file resowner.c.

References dsm_segment_handle(), elog, and WARNING.

Referenced by ResourceOwnerReleaseInternal().

 {
     elog(WARNING, "dynamic shared memory leak: segment %u still referenced",
          dsm_segment_handle(seg));
 }

static void PrintFileLeakWarning ( File file )

static

Definition at line 1220 of file resowner.c.

References elog, and WARNING.

Referenced by ResourceOwnerReleaseInternal().

 {
     elog(WARNING, "temporary file leak: File %d still referenced",
          file);
 }

static void PrintPlanCacheLeakWarning ( CachedPlan * plan )

static

Definition at line 1084 of file resowner.c.

References elog, and WARNING.

Referenced by ResourceOwnerReleaseInternal().

 {
     elog(WARNING, "plancache reference leak: plan %p not closed", plan);
 }

static void PrintRelCacheLeakWarning ( Relation rel )

static

Definition at line 1039 of file resowner.c.

References elog, RelationGetRelationName, and WARNING.

Referenced by ResourceOwnerReleaseInternal().

 {
     elog(WARNING, "relcache reference leak: relation \"%s\" not closed",
          RelationGetRelationName(rel));
 }

static void PrintSnapshotLeakWarning ( Snapshot snapshot )

static

Definition at line 1174 of file resowner.c.

References elog, and WARNING.

Referenced by ResourceOwnerReleaseInternal().

 {
     elog(WARNING, "Snapshot reference leak: Snapshot %p still referenced",
          snapshot);
 }

static void PrintTupleDescLeakWarning ( TupleDesc tupdesc )

static

Definition at line 1128 of file resowner.c.

References elog, tupleDesc::tdtypeid, tupleDesc::tdtypmod, and WARNING.

Referenced by ResourceOwnerReleaseInternal().

 {
     elog(WARNING,
          "TupleDesc reference leak: TupleDesc %p (%u,%d) still referenced",
          tupdesc, tupdesc->tdtypeid, tupdesc->tdtypmod);
 }

void RegisterResourceReleaseCallback	(	ResourceReleaseCallback	callback,
		void *	arg
	)

Definition at line 793 of file resowner.c.

References arg, ResourceReleaseCallbackItem::arg, callback(), ResourceReleaseCallbackItem::callback, MemoryContextAlloc(), ResourceReleaseCallbackItem::next, ResourceRelease_callbacks, and TopMemoryContext.

Referenced by px_find_cipher(), and px_find_digest().

 {
     ResourceReleaseCallbackItem *item;
 
     item = (ResourceReleaseCallbackItem *)
         MemoryContextAlloc(TopMemoryContext,
                            sizeof(ResourceReleaseCallbackItem));
     item->callback = callback;
     item->arg = arg;
     item->next = ResourceRelease_callbacks;
     ResourceRelease_callbacks = item;
 }

static void ResourceArrayAdd	(	ResourceArray *	resarr,
		Datum	value
	)

static

Definition at line 257 of file resowner.c.

References Assert, ResourceArray::capacity, DatumGetUInt32, hash_any(), idx(), ResourceArray::invalidval, ResourceArray::itemsarr, ResourceArray::lastidx, ResourceArray::maxitems, ResourceArray::nitems, RESARRAY_IS_ARRAY, and value.

Referenced by ResourceArrayEnlarge(), ResourceOwnerRememberBuffer(), ResourceOwnerRememberCatCacheListRef(), ResourceOwnerRememberCatCacheRef(), ResourceOwnerRememberDSM(), ResourceOwnerRememberFile(), ResourceOwnerRememberPlanCacheRef(), ResourceOwnerRememberRelationRef(), ResourceOwnerRememberSnapshot(), and ResourceOwnerRememberTupleDesc().

 {
     uint32      idx;
 
     Assert(value != resarr->invalidval);
     Assert(resarr->nitems < resarr->maxitems);
 
     if (RESARRAY_IS_ARRAY(resarr))
     {
         /* Append to linear array. */
         idx = resarr->nitems;
     }
     else
     {
         /* Insert into first free slot at or after hash location. */
         uint32      mask = resarr->capacity - 1;
 
         idx = DatumGetUInt32(hash_any((void *) &value, sizeof(value))) & mask;
         for (;;)
         {
             if (resarr->itemsarr[idx] == resarr->invalidval)
                 break;
             idx = (idx + 1) & mask;
         }
     }
     resarr->lastidx = idx;
     resarr->itemsarr[idx] = value;
     resarr->nitems++;
 }

static void ResourceArrayEnlarge ( ResourceArray * resarr )

static

Definition at line 202 of file resowner.c.

References Assert, ResourceArray::capacity, i, ResourceArray::invalidval, ResourceArray::itemsarr, ResourceArray::maxitems, MemoryContextAlloc(), ResourceArray::nitems, NULL, pfree(), RESARRAY_INIT_SIZE, RESARRAY_MAX_ITEMS, ResourceArrayAdd(), and TopMemoryContext.

Referenced by ResourceOwnerEnlargeBuffers(), ResourceOwnerEnlargeCatCacheListRefs(), ResourceOwnerEnlargeCatCacheRefs(), ResourceOwnerEnlargeDSMs(), ResourceOwnerEnlargeFiles(), ResourceOwnerEnlargePlanCacheRefs(), ResourceOwnerEnlargeRelationRefs(), ResourceOwnerEnlargeSnapshots(), and ResourceOwnerEnlargeTupleDescs().

 {
     uint32      i,
                 oldcap,
                 newcap;
     Datum      *olditemsarr;
     Datum      *newitemsarr;
 
     if (resarr->nitems < resarr->maxitems)
         return;                 /* no work needed */
 
     olditemsarr = resarr->itemsarr;
     oldcap = resarr->capacity;
 
     /* Double the capacity of the array (capacity must stay a power of 2!) */
     newcap = (oldcap > 0) ? oldcap * 2 : RESARRAY_INIT_SIZE;
     newitemsarr = (Datum *) MemoryContextAlloc(TopMemoryContext,
                                                newcap * sizeof(Datum));
     for (i = 0; i < newcap; i++)
         newitemsarr[i] = resarr->invalidval;
 
     /* We assume we can't fail below this point, so OK to scribble on resarr */
     resarr->itemsarr = newitemsarr;
     resarr->capacity = newcap;
     resarr->maxitems = RESARRAY_MAX_ITEMS(newcap);
     resarr->nitems = 0;
 
     if (olditemsarr != NULL)
     {
         /*
          * Transfer any pre-existing entries into the new array; they don't
          * necessarily go where they were before, so this simple logic is the
          * best way.  Note that if we were managing the set as a simple array,
          * the entries after nitems are garbage, but that shouldn't matter
          * because we won't get here unless nitems was equal to oldcap.
          */
         for (i = 0; i < oldcap; i++)
         {
             if (olditemsarr[i] != resarr->invalidval)
                 ResourceArrayAdd(resarr, olditemsarr[i]);
         }
 
         /* And release old array. */
         pfree(olditemsarr);
     }
 
     Assert(resarr->nitems < resarr->maxitems);
 }

static void ResourceArrayFree ( ResourceArray * resarr )

static

Definition at line 396 of file resowner.c.

References ResourceArray::itemsarr, and pfree().

Referenced by ResourceOwnerDelete().

 {
     if (resarr->itemsarr)
         pfree(resarr->itemsarr);
 }

static bool ResourceArrayGetAny	(	ResourceArray *	resarr,
		Datum *	value
	)

static

Definition at line 364 of file resowner.c.

References ResourceArray::capacity, ResourceArray::invalidval, ResourceArray::itemsarr, ResourceArray::lastidx, ResourceArray::nitems, and RESARRAY_IS_ARRAY.

Referenced by ResourceOwnerReleaseInternal().

 {
     if (resarr->nitems == 0)
         return false;
 
     if (RESARRAY_IS_ARRAY(resarr))
     {
         /* Linear array: just return the first element. */
         resarr->lastidx = 0;
     }
     else
     {
         /* Hash: search forward from wherever we were last. */
         uint32      mask = resarr->capacity - 1;
 
         for (;;)
         {
             resarr->lastidx &= mask;
             if (resarr->itemsarr[resarr->lastidx] != resarr->invalidval)
                 break;
             resarr->lastidx++;
         }
     }
 
     *value = resarr->itemsarr[resarr->lastidx];
     return true;
 }

static void ResourceArrayInit	(	ResourceArray *	resarr,
		Datum	invalidval
	)

static

Definition at line 183 of file resowner.c.

References Assert, ResourceArray::capacity, ResourceArray::invalidval, ResourceArray::itemsarr, ResourceArray::maxitems, ResourceArray::nitems, and NULL.

Referenced by ResourceOwnerCreate().

 {
     /* Assert it's empty */
     Assert(resarr->itemsarr == NULL);
     Assert(resarr->capacity == 0);
     Assert(resarr->nitems == 0);
     Assert(resarr->maxitems == 0);
     /* Remember the appropriate "invalid" value */
     resarr->invalidval = invalidval;
     /* We don't allocate any storage until needed */
 }

static bool ResourceArrayRemove	(	ResourceArray *	resarr,
		Datum	value
	)

static

Definition at line 295 of file resowner.c.

References Assert, ResourceArray::capacity, DatumGetUInt32, hash_any(), i, idx(), ResourceArray::invalidval, ResourceArray::itemsarr, ResourceArray::lastidx, ResourceArray::nitems, and RESARRAY_IS_ARRAY.

Referenced by ResourceOwnerForgetBuffer(), ResourceOwnerForgetCatCacheListRef(), ResourceOwnerForgetCatCacheRef(), ResourceOwnerForgetDSM(), ResourceOwnerForgetFile(), ResourceOwnerForgetPlanCacheRef(), ResourceOwnerForgetRelationRef(), ResourceOwnerForgetSnapshot(), and ResourceOwnerForgetTupleDesc().

 {
     uint32      i,
                 idx,
                 lastidx = resarr->lastidx;
 
     Assert(value != resarr->invalidval);
 
     /* Search through all items, but try lastidx first. */
     if (RESARRAY_IS_ARRAY(resarr))
     {
         if (lastidx < resarr->nitems &&
             resarr->itemsarr[lastidx] == value)
         {
             resarr->itemsarr[lastidx] = resarr->itemsarr[resarr->nitems - 1];
             resarr->nitems--;
             /* Update lastidx to make reverse-order removals fast. */
             resarr->lastidx = resarr->nitems - 1;
             return true;
         }
         for (i = 0; i < resarr->nitems; i++)
         {
             if (resarr->itemsarr[i] == value)
             {
                 resarr->itemsarr[i] = resarr->itemsarr[resarr->nitems - 1];
                 resarr->nitems--;
                 /* Update lastidx to make reverse-order removals fast. */
                 resarr->lastidx = resarr->nitems - 1;
                 return true;
             }
         }
     }
     else
     {
         uint32      mask = resarr->capacity - 1;
 
         if (lastidx < resarr->capacity &&
             resarr->itemsarr[lastidx] == value)
         {
             resarr->itemsarr[lastidx] = resarr->invalidval;
             resarr->nitems--;
             return true;
         }
         idx = DatumGetUInt32(hash_any((void *) &value, sizeof(value))) & mask;
         for (i = 0; i < resarr->capacity; i++)
         {
             if (resarr->itemsarr[idx] == value)
             {
                 resarr->itemsarr[idx] = resarr->invalidval;
                 resarr->nitems--;
                 return true;
             }
             idx = (idx + 1) & mask;
         }
     }
 
     return false;
 }

ResourceOwner ResourceOwnerCreate	(	ResourceOwner	parent,
		const char *	name
	)

Definition at line 416 of file resowner.c.

Referenced by ApplyWorkerMain(), AtStart_ResourceOwner(), AtSubStart_ResourceOwner(), BackgroundWriterMain(), CheckpointerMain(), CreatePortal(), ParallelWorkerMain(), pg_logical_slot_get_changes_guts(), test_shm_mq_main(), WalReceiverMain(), WalSndShutdown(), and WalWriterMain().

 {
     ResourceOwner owner;
 
     owner = (ResourceOwner) MemoryContextAllocZero(TopMemoryContext,
                                                    sizeof(ResourceOwnerData));
     owner->name = name;
 
     if (parent)
     {
         owner->parent = parent;
         owner->nextchild = parent->firstchild;
         parent->firstchild = owner;
     }
 
     ResourceArrayInit(&(owner->bufferarr), BufferGetDatum(InvalidBuffer));
     ResourceArrayInit(&(owner->catrefarr), PointerGetDatum(NULL));
     ResourceArrayInit(&(owner->catlistrefarr), PointerGetDatum(NULL));
     ResourceArrayInit(&(owner->relrefarr), PointerGetDatum(NULL));
     ResourceArrayInit(&(owner->planrefarr), PointerGetDatum(NULL));
     ResourceArrayInit(&(owner->tupdescarr), PointerGetDatum(NULL));
     ResourceArrayInit(&(owner->snapshotarr), PointerGetDatum(NULL));
     ResourceArrayInit(&(owner->filearr), FileGetDatum(-1));
     ResourceArrayInit(&(owner->dsmarr), PointerGetDatum(NULL));
 
     return owner;
 }

void ResourceOwnerDelete ( ResourceOwner owner )

Definition at line 687 of file resowner.c.

References Assert, ResourceOwnerData::bufferarr, ResourceOwnerData::catlistrefarr, ResourceOwnerData::catrefarr, ResourceOwnerData::dsmarr, ResourceOwnerData::filearr, ResourceOwnerData::firstchild, MAX_RESOWNER_LOCKS, ResourceArray::nitems, ResourceOwnerData::nlocks, NULL, pfree(), ResourceOwnerData::planrefarr, ResourceOwnerData::relrefarr, ResourceArrayFree(), ResourceOwnerDelete(), ResourceOwnerNewParent(), ResourceOwnerData::snapshotarr, and ResourceOwnerData::tupdescarr.

Referenced by CleanupSubTransaction(), CleanupTransaction(), CommitSubTransaction(), CommitTransaction(), PortalDrop(), PrepareTransaction(), and ResourceOwnerDelete().

 {
     /* We had better not be deleting CurrentResourceOwner ... */
     Assert(owner != CurrentResourceOwner);
 
     /* And it better not own any resources, either */
     Assert(owner->bufferarr.nitems == 0);
     Assert(owner->catrefarr.nitems == 0);
     Assert(owner->catlistrefarr.nitems == 0);
     Assert(owner->relrefarr.nitems == 0);
     Assert(owner->planrefarr.nitems == 0);
     Assert(owner->tupdescarr.nitems == 0);
     Assert(owner->snapshotarr.nitems == 0);
     Assert(owner->filearr.nitems == 0);
     Assert(owner->dsmarr.nitems == 0);
     Assert(owner->nlocks == 0 || owner->nlocks == MAX_RESOWNER_LOCKS + 1);
 
     /*
      * Delete children.  The recursive call will delink the child from me, so
      * just iterate as long as there is a child.
      */
     while (owner->firstchild != NULL)
         ResourceOwnerDelete(owner->firstchild);
 
     /*
      * We delink the owner from its parent before deleting it, so that if
      * there's an error we won't have deleted/busted owners still attached to
      * the owner tree.  Better a leak than a crash.
      */
     ResourceOwnerNewParent(owner, NULL);
 
     /* And free the object. */
     ResourceArrayFree(&(owner->bufferarr));
     ResourceArrayFree(&(owner->catrefarr));
     ResourceArrayFree(&(owner->catlistrefarr));
     ResourceArrayFree(&(owner->relrefarr));
     ResourceArrayFree(&(owner->planrefarr));
     ResourceArrayFree(&(owner->tupdescarr));
     ResourceArrayFree(&(owner->snapshotarr));
     ResourceArrayFree(&(owner->filearr));
     ResourceArrayFree(&(owner->dsmarr));
 
     pfree(owner);
 }

void ResourceOwnerEnlargeBuffers ( ResourceOwner owner )

Definition at line 839 of file resowner.c.

References ResourceOwnerData::bufferarr, NULL, and ResourceArrayEnlarge().

Referenced by BgBufferSync(), BufferSync(), FlushDatabaseBuffers(), FlushRelationBuffers(), IncrBufferRefCount(), and ReadBuffer_common().

 {
     if (owner == NULL)
         return;
     ResourceArrayEnlarge(&(owner->bufferarr));
 }

void ResourceOwnerEnlargeCatCacheListRefs ( ResourceOwner owner )

Definition at line 973 of file resowner.c.

References ResourceOwnerData::catlistrefarr, and ResourceArrayEnlarge().

Referenced by SearchCatCacheList().

 {
     ResourceArrayEnlarge(&(owner->catlistrefarr));
 }

void ResourceOwnerEnlargeCatCacheRefs ( ResourceOwner owner )

Definition at line 938 of file resowner.c.

References ResourceOwnerData::catrefarr, and ResourceArrayEnlarge().

Referenced by SearchCatCache().

 {
     ResourceArrayEnlarge(&(owner->catrefarr));
 }

void ResourceOwnerEnlargeDSMs ( ResourceOwner owner )

Definition at line 1234 of file resowner.c.

References ResourceOwnerData::dsmarr, and ResourceArrayEnlarge().

Referenced by dsm_create_descriptor(), and dsm_unpin_mapping().

 {
     ResourceArrayEnlarge(&(owner->dsmarr));
 }

void ResourceOwnerEnlargeFiles ( ResourceOwner owner )

Definition at line 1189 of file resowner.c.

References ResourceOwnerData::filearr, and ResourceArrayEnlarge().

Referenced by OpenTemporaryFile().

 {
     ResourceArrayEnlarge(&(owner->filearr));
 }

void ResourceOwnerEnlargePlanCacheRefs ( ResourceOwner owner )

Definition at line 1053 of file resowner.c.

References ResourceOwnerData::planrefarr, and ResourceArrayEnlarge().

Referenced by GetCachedPlan().

 {
     ResourceArrayEnlarge(&(owner->planrefarr));
 }

void ResourceOwnerEnlargeRelationRefs ( ResourceOwner owner )

Definition at line 1008 of file resowner.c.

References ResourceOwnerData::relrefarr, and ResourceArrayEnlarge().

Referenced by RelationIncrementReferenceCount().

 {
     ResourceArrayEnlarge(&(owner->relrefarr));
 }

void ResourceOwnerEnlargeSnapshots ( ResourceOwner owner )

Definition at line 1143 of file resowner.c.

References ResourceArrayEnlarge(), and ResourceOwnerData::snapshotarr.

Referenced by RegisterSnapshotOnOwner().

 {
     ResourceArrayEnlarge(&(owner->snapshotarr));
 }

void ResourceOwnerEnlargeTupleDescs ( ResourceOwner owner )

Definition at line 1097 of file resowner.c.

References ResourceArrayEnlarge(), and ResourceOwnerData::tupdescarr.

Referenced by IncrTupleDescRefCount().

 {
     ResourceArrayEnlarge(&(owner->tupdescarr));
 }

void ResourceOwnerForgetBuffer	(	ResourceOwner	owner,
		Buffer	buffer
	)

Definition at line 869 of file resowner.c.

References ResourceOwnerData::bufferarr, BufferGetDatum, elog, ERROR, ResourceOwnerData::name, NULL, and ResourceArrayRemove().

Referenced by ReleaseAndReadBuffer(), ReleaseBuffer(), and UnpinBuffer().

 {
     if (owner == NULL)
         return;
     if (!ResourceArrayRemove(&(owner->bufferarr), BufferGetDatum(buffer)))
         elog(ERROR, "buffer %d is not owned by resource owner %s",
              buffer, owner->name);
 }

void ResourceOwnerForgetCatCacheListRef	(	ResourceOwner	owner,
		CatCList *	list
	)

Definition at line 993 of file resowner.c.

References ResourceOwnerData::catlistrefarr, elog, ERROR, ResourceOwnerData::name, PointerGetDatum, and ResourceArrayRemove().

Referenced by ReleaseCatCacheList().

 {
     if (!ResourceArrayRemove(&(owner->catlistrefarr), PointerGetDatum(list)))
         elog(ERROR, "catcache list reference %p is not owned by resource owner %s",
              list, owner->name);
 }

void ResourceOwnerForgetCatCacheRef	(	ResourceOwner	owner,
		HeapTuple	tuple
	)

Definition at line 958 of file resowner.c.

References ResourceOwnerData::catrefarr, elog, ERROR, ResourceOwnerData::name, PointerGetDatum, and ResourceArrayRemove().

Referenced by ReleaseCatCache().

 {
     if (!ResourceArrayRemove(&(owner->catrefarr), PointerGetDatum(tuple)))
         elog(ERROR, "catcache reference %p is not owned by resource owner %s",
              tuple, owner->name);
 }

void ResourceOwnerForgetDSM	(	ResourceOwner	owner,
		dsm_segment *	seg
	)

Definition at line 1254 of file resowner.c.

References dsm_segment_handle(), ResourceOwnerData::dsmarr, elog, ERROR, ResourceOwnerData::name, PointerGetDatum, and ResourceArrayRemove().

Referenced by dsm_create(), dsm_detach(), and dsm_pin_mapping().

 {
     if (!ResourceArrayRemove(&(owner->dsmarr), PointerGetDatum(seg)))
         elog(ERROR, "dynamic shared memory segment %u is not owned by resource owner %s",
              dsm_segment_handle(seg), owner->name);
 }

void ResourceOwnerForgetFile	(	ResourceOwner	owner,
		File	file
	)

Definition at line 1209 of file resowner.c.

References elog, ERROR, ResourceOwnerData::filearr, FileGetDatum, ResourceOwnerData::name, and ResourceArrayRemove().

Referenced by FileClose().

 {
     if (!ResourceArrayRemove(&(owner->filearr), FileGetDatum(file)))
         elog(ERROR, "temporary file %d is not owned by resource owner %s",
              file, owner->name);
 }

void ResourceOwnerForgetLock	(	ResourceOwner	owner,
		LOCALLOCK *	locallock
	)

Definition at line 909 of file resowner.c.

References Assert, elog, ERROR, i, ResourceOwnerData::locks, MAX_RESOWNER_LOCKS, ResourceOwnerData::name, and ResourceOwnerData::nlocks.

Referenced by LockReassignOwner(), LockRelease(), LockReleaseAll(), ReleaseLockIfHeld(), and RemoveLocalLock().

 {
     int         i;
 
     if (owner->nlocks > MAX_RESOWNER_LOCKS)
         return;                 /* we have overflowed */
 
     Assert(owner->nlocks > 0);
     for (i = owner->nlocks - 1; i >= 0; i--)
     {
         if (locallock == owner->locks[i])
         {
             owner->locks[i] = owner->locks[owner->nlocks - 1];
             owner->nlocks--;
             return;
         }
     }
     elog(ERROR, "lock reference %p is not owned by resource owner %s",
          locallock, owner->name);
 }

void ResourceOwnerForgetPlanCacheRef	(	ResourceOwner	owner,
		CachedPlan *	plan
	)

Definition at line 1073 of file resowner.c.

References elog, ERROR, ResourceOwnerData::name, ResourceOwnerData::planrefarr, PointerGetDatum, and ResourceArrayRemove().

Referenced by ReleaseCachedPlan().

 {
     if (!ResourceArrayRemove(&(owner->planrefarr), PointerGetDatum(plan)))
         elog(ERROR, "plancache reference %p is not owned by resource owner %s",
              plan, owner->name);
 }

void ResourceOwnerForgetRelationRef	(	ResourceOwner	owner,
		Relation	rel
	)

Definition at line 1028 of file resowner.c.

References elog, ERROR, ResourceOwnerData::name, PointerGetDatum, RelationGetRelationName, ResourceOwnerData::relrefarr, and ResourceArrayRemove().

Referenced by RelationDecrementReferenceCount().

 {
     if (!ResourceArrayRemove(&(owner->relrefarr), PointerGetDatum(rel)))
         elog(ERROR, "relcache reference %s is not owned by resource owner %s",
              RelationGetRelationName(rel), owner->name);
 }

void ResourceOwnerForgetSnapshot	(	ResourceOwner	owner,
		Snapshot	snapshot
	)

Definition at line 1163 of file resowner.c.

References elog, ERROR, ResourceOwnerData::name, PointerGetDatum, ResourceArrayRemove(), and ResourceOwnerData::snapshotarr.

Referenced by UnregisterSnapshotFromOwner().

 {
     if (!ResourceArrayRemove(&(owner->snapshotarr), PointerGetDatum(snapshot)))
         elog(ERROR, "snapshot reference %p is not owned by resource owner %s",
              snapshot, owner->name);
 }

void ResourceOwnerForgetTupleDesc	(	ResourceOwner	owner,
		TupleDesc	tupdesc
	)

Definition at line 1117 of file resowner.c.

References elog, ERROR, ResourceOwnerData::name, PointerGetDatum, ResourceArrayRemove(), and ResourceOwnerData::tupdescarr.

Referenced by DecrTupleDescRefCount().

 {
     if (!ResourceArrayRemove(&(owner->tupdescarr), PointerGetDatum(tupdesc)))
         elog(ERROR, "tupdesc reference %p is not owned by resource owner %s",
              tupdesc, owner->name);
 }

ResourceOwner ResourceOwnerGetParent ( ResourceOwner owner )

Definition at line 736 of file resowner.c.

References ResourceOwnerData::parent.

Referenced by LockReassignCurrentOwner().

 {
     return owner->parent;
 }

void ResourceOwnerNewParent	(	ResourceOwner	owner,
		ResourceOwner	newparent
	)

Definition at line 745 of file resowner.c.

References Assert, ResourceOwnerData::firstchild, ResourceOwnerData::nextchild, NULL, and ResourceOwnerData::parent.

Referenced by AtSubAbort_Portals(), AtSubCommit_Portals(), and ResourceOwnerDelete().

 {
     ResourceOwner oldparent = owner->parent;
 
     if (oldparent)
     {
         if (owner == oldparent->firstchild)
             oldparent->firstchild = owner->nextchild;
         else
         {
             ResourceOwner child;
 
             for (child = oldparent->firstchild; child; child = child->nextchild)
             {
                 if (owner == child->nextchild)
                 {
                     child->nextchild = owner->nextchild;
                     break;
                 }
             }
         }
     }
 
     if (newparent)
     {
         Assert(owner != newparent);
         owner->parent = newparent;
         owner->nextchild = newparent->firstchild;
         newparent->firstchild = owner;
     }
     else
     {
         owner->parent = NULL;
         owner->nextchild = NULL;
     }
 }

void ResourceOwnerRelease	(	ResourceOwner	owner,
		ResourceReleasePhase	phase,
		bool	isCommit,
		bool	isTopLevel
	)

Definition at line 471 of file resowner.c.

References CurrentResourceOwner, PG_CATCH, PG_END_TRY, PG_RE_THROW, PG_TRY, and ResourceOwnerReleaseInternal().

Referenced by AbortSubTransaction(), AbortTransaction(), BackgroundWriterMain(), CheckpointerMain(), CommitSubTransaction(), CommitTransaction(), PortalDrop(), PrepareTransaction(), and WalWriterMain().

 {
     /* Rather than PG_TRY at every level of recursion, set it up once */
     ResourceOwner save;
 
     save = CurrentResourceOwner;
     PG_TRY();
     {
         ResourceOwnerReleaseInternal(owner, phase, isCommit, isTopLevel);
     }
     PG_CATCH();
     {
         CurrentResourceOwner = save;
         PG_RE_THROW();
     }
     PG_END_TRY();
     CurrentResourceOwner = save;
 }

static void ResourceOwnerReleaseInternal	(	ResourceOwner	owner,
		ResourceReleasePhase	phase,
		bool	isCommit,
		bool	isTopLevel
	)

static

Definition at line 494 of file resowner.c.

Referenced by ResourceOwnerRelease().

 {
     ResourceOwner child;
     ResourceOwner save;
     ResourceReleaseCallbackItem *item;
     Datum       foundres;
 
     /* Recurse to handle descendants */
     for (child = owner->firstchild; child != NULL; child = child->nextchild)
         ResourceOwnerReleaseInternal(child, phase, isCommit, isTopLevel);
 
     /*
      * Make CurrentResourceOwner point to me, so that ReleaseBuffer etc don't
      * get confused.  We needn't PG_TRY here because the outermost level will
      * fix it on error abort.
      */
     save = CurrentResourceOwner;
     CurrentResourceOwner = owner;
 
     if (phase == RESOURCE_RELEASE_BEFORE_LOCKS)
     {
         /*
          * Release buffer pins.  Note that ReleaseBuffer will remove the
          * buffer entry from our array, so we just have to iterate till there
          * are none.
          *
          * During a commit, there shouldn't be any remaining pins --- that
          * would indicate failure to clean up the executor correctly --- so
          * issue warnings.  In the abort case, just clean up quietly.
          */
         while (ResourceArrayGetAny(&(owner->bufferarr), &foundres))
         {
             Buffer      res = DatumGetBuffer(foundres);
 
             if (isCommit)
                 PrintBufferLeakWarning(res);
             ReleaseBuffer(res);
         }
 
         /* Ditto for relcache references */
         while (ResourceArrayGetAny(&(owner->relrefarr), &foundres))
         {
             Relation    res = (Relation) DatumGetPointer(foundres);
 
             if (isCommit)
                 PrintRelCacheLeakWarning(res);
             RelationClose(res);
         }
 
         /* Ditto for dynamic shared memory segments */
         while (ResourceArrayGetAny(&(owner->dsmarr), &foundres))
         {
             dsm_segment *res = (dsm_segment *) DatumGetPointer(foundres);
 
             if (isCommit)
                 PrintDSMLeakWarning(res);
             dsm_detach(res);
         }
     }
     else if (phase == RESOURCE_RELEASE_LOCKS)
     {
         if (isTopLevel)
         {
             /*
              * For a top-level xact we are going to release all locks (or at
              * least all non-session locks), so just do a single lmgr call at
              * the top of the recursion.
              */
             if (owner == TopTransactionResourceOwner)
             {
                 ProcReleaseLocks(isCommit);
                 ReleasePredicateLocks(isCommit);
             }
         }
         else
         {
             /*
              * Release locks retail.  Note that if we are committing a
              * subtransaction, we do NOT release its locks yet, but transfer
              * them to the parent.
              */
             LOCALLOCK **locks;
             int         nlocks;
 
             Assert(owner->parent != NULL);
 
             /*
              * Pass the list of locks owned by this resource owner to the lock
              * manager, unless it has overflowed.
              */
             if (owner->nlocks > MAX_RESOWNER_LOCKS)
             {
                 locks = NULL;
                 nlocks = 0;
             }
             else
             {
                 locks = owner->locks;
                 nlocks = owner->nlocks;
             }
 
             if (isCommit)
                 LockReassignCurrentOwner(locks, nlocks);
             else
                 LockReleaseCurrentOwner(locks, nlocks);
         }
     }
     else if (phase == RESOURCE_RELEASE_AFTER_LOCKS)
     {
         /*
          * Release catcache references.  Note that ReleaseCatCache will remove
          * the catref entry from our array, so we just have to iterate till
          * there are none.
          *
          * As with buffer pins, warn if any are left at commit time.
          */
         while (ResourceArrayGetAny(&(owner->catrefarr), &foundres))
         {
             HeapTuple   res = (HeapTuple) DatumGetPointer(foundres);
 
             if (isCommit)
                 PrintCatCacheLeakWarning(res);
             ReleaseCatCache(res);
         }
 
         /* Ditto for catcache lists */
         while (ResourceArrayGetAny(&(owner->catlistrefarr), &foundres))
         {
             CatCList   *res = (CatCList *) DatumGetPointer(foundres);
 
             if (isCommit)
                 PrintCatCacheListLeakWarning(res);
             ReleaseCatCacheList(res);
         }
 
         /* Ditto for plancache references */
         while (ResourceArrayGetAny(&(owner->planrefarr), &foundres))
         {
             CachedPlan *res = (CachedPlan *) DatumGetPointer(foundres);
 
             if (isCommit)
                 PrintPlanCacheLeakWarning(res);
             ReleaseCachedPlan(res, true);
         }
 
         /* Ditto for tupdesc references */
         while (ResourceArrayGetAny(&(owner->tupdescarr), &foundres))
         {
             TupleDesc   res = (TupleDesc) DatumGetPointer(foundres);
 
             if (isCommit)
                 PrintTupleDescLeakWarning(res);
             DecrTupleDescRefCount(res);
         }
 
         /* Ditto for snapshot references */
         while (ResourceArrayGetAny(&(owner->snapshotarr), &foundres))
         {
             Snapshot    res = (Snapshot) DatumGetPointer(foundres);
 
             if (isCommit)
                 PrintSnapshotLeakWarning(res);
             UnregisterSnapshot(res);
         }
 
         /* Ditto for temporary files */
         while (ResourceArrayGetAny(&(owner->filearr), &foundres))
         {
             File        res = DatumGetFile(foundres);
 
             if (isCommit)
                 PrintFileLeakWarning(res);
             FileClose(res);
         }
     }
 
     /* Let add-on modules get a chance too */
     for (item = ResourceRelease_callbacks; item; item = item->next)
         (*item->callback) (phase, isCommit, isTopLevel, item->arg);
 
     CurrentResourceOwner = save;
 }

void ResourceOwnerRememberBuffer	(	ResourceOwner	owner,
		Buffer	buffer
	)

Definition at line 855 of file resowner.c.

References ResourceOwnerData::bufferarr, BufferGetDatum, NULL, and ResourceArrayAdd().

Referenced by IncrBufferRefCount(), LocalBufferAlloc(), PinBuffer(), and PinBuffer_Locked().

 {
     if (owner == NULL)
         return;
     ResourceArrayAdd(&(owner->bufferarr), BufferGetDatum(buffer));
 }

void ResourceOwnerRememberCatCacheListRef	(	ResourceOwner	owner,
		CatCList *	list
	)

Definition at line 984 of file resowner.c.

References ResourceOwnerData::catlistrefarr, PointerGetDatum, and ResourceArrayAdd().

Referenced by SearchCatCacheList().

 {
     ResourceArrayAdd(&(owner->catlistrefarr), PointerGetDatum(list));
 }

void ResourceOwnerRememberCatCacheRef	(	ResourceOwner	owner,
		HeapTuple	tuple
	)

Definition at line 949 of file resowner.c.

References ResourceOwnerData::catrefarr, PointerGetDatum, and ResourceArrayAdd().

Referenced by SearchCatCache().

 {
     ResourceArrayAdd(&(owner->catrefarr), PointerGetDatum(tuple));
 }

void ResourceOwnerRememberDSM	(	ResourceOwner	owner,
		dsm_segment *	seg
	)

Definition at line 1245 of file resowner.c.

References ResourceOwnerData::dsmarr, PointerGetDatum, and ResourceArrayAdd().

Referenced by dsm_create_descriptor(), and dsm_unpin_mapping().

 {
     ResourceArrayAdd(&(owner->dsmarr), PointerGetDatum(seg));
 }

void ResourceOwnerRememberFile	(	ResourceOwner	owner,
		File	file
	)

Definition at line 1200 of file resowner.c.

References ResourceOwnerData::filearr, FileGetDatum, and ResourceArrayAdd().

Referenced by OpenTemporaryFile().

 {
     ResourceArrayAdd(&(owner->filearr), FileGetDatum(file));
 }

void ResourceOwnerRememberLock	(	ResourceOwner	owner,
		LOCALLOCK *	locallock
	)

Definition at line 889 of file resowner.c.

References Assert, ResourceOwnerData::locks, MAX_RESOWNER_LOCKS, ResourceOwnerData::nlocks, and NULL.

Referenced by GrantLockLocal(), and LockReassignOwner().

 {
     Assert(locallock != NULL);
 
     if (owner->nlocks > MAX_RESOWNER_LOCKS)
         return;                 /* we have already overflowed */
 
     if (owner->nlocks < MAX_RESOWNER_LOCKS)
         owner->locks[owner->nlocks] = locallock;
     else
     {
         /* overflowed */
     }
     owner->nlocks++;
 }

void ResourceOwnerRememberPlanCacheRef	(	ResourceOwner	owner,
		CachedPlan *	plan
	)

Definition at line 1064 of file resowner.c.

References ResourceOwnerData::planrefarr, PointerGetDatum, and ResourceArrayAdd().

Referenced by GetCachedPlan().

 {
     ResourceArrayAdd(&(owner->planrefarr), PointerGetDatum(plan));
 }

void ResourceOwnerRememberRelationRef	(	ResourceOwner	owner,
		Relation	rel
	)

Definition at line 1019 of file resowner.c.

References PointerGetDatum, ResourceOwnerData::relrefarr, and ResourceArrayAdd().

Referenced by RelationIncrementReferenceCount().

 {
     ResourceArrayAdd(&(owner->relrefarr), PointerGetDatum(rel));
 }

void ResourceOwnerRememberSnapshot	(	ResourceOwner	owner,
		Snapshot	snapshot
	)

Definition at line 1154 of file resowner.c.

References PointerGetDatum, ResourceArrayAdd(), and ResourceOwnerData::snapshotarr.

Referenced by RegisterSnapshotOnOwner().

 {
     ResourceArrayAdd(&(owner->snapshotarr), PointerGetDatum(snapshot));
 }

void ResourceOwnerRememberTupleDesc	(	ResourceOwner	owner,
		TupleDesc	tupdesc
	)

Definition at line 1108 of file resowner.c.

References PointerGetDatum, ResourceArrayAdd(), and ResourceOwnerData::tupdescarr.

Referenced by IncrTupleDescRefCount().

 {
     ResourceArrayAdd(&(owner->tupdescarr), PointerGetDatum(tupdesc));
 }

void UnregisterResourceReleaseCallback	(	ResourceReleaseCallback	callback,
		void *	arg
	)

Definition at line 807 of file resowner.c.

References ResourceReleaseCallbackItem::next, NULL, and pfree().

 {
     ResourceReleaseCallbackItem *item;
     ResourceReleaseCallbackItem *prev;
 
     prev = NULL;
     for (item = ResourceRelease_callbacks; item; prev = item, item = item->next)
     {
         if (item->callback == callback && item->arg == arg)
         {
             if (prev)
                 prev->next = item->next;
             else
                 ResourceRelease_callbacks = item->next;
             pfree(item);
             break;
         }
     }
 }