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Postgres FD Implementation
Commit 2fd6a44a authored by Jeff Davis's avatar Jeff Davis
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Revert "Specialize MemoryContextMemAllocated()." 

This reverts commit e00912e1.
parent 2247a1ea
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Inline Side-by-side
Showing with 28 additions and 77 deletions
src/backend/utils/mmgr/aset.c
View file @ 2fd6a44a
......@@ -132,7 +132,6 @@ typedef struct AllocSetContext
Size maxBlockSize; /* maximum block size */
Size nextBlockSize; /* next block size to allocate */
Size allocChunkLimit; /* effective chunk size limit */
Size memAllocated; /* track memory allocated for this context */
AllocBlock keeper; /* keep this block over resets */
/* freelist this context could be put in, or -1 if not a candidate: */
int freeListIndex; /* index in context_freelists[], or -1 */
......@@ -273,7 +272,6 @@ static void *AllocSetRealloc(MemoryContext context, void *pointer, Size size);
static void AllocSetReset(MemoryContext context);
static void AllocSetDelete(MemoryContext context);
static Size AllocSetGetChunkSpace(MemoryContext context, void *pointer);
static Size AllocSetMemAllocated(MemoryContext context);
static bool AllocSetIsEmpty(MemoryContext context);
static void AllocSetStats(MemoryContext context,
MemoryStatsPrintFunc printfunc, void *passthru,
......@@ -293,7 +291,6 @@ static const MemoryContextMethods AllocSetMethods = {
AllocSetReset,
AllocSetDelete,
AllocSetGetChunkSpace,
AllocSetMemAllocated,
AllocSetIsEmpty,
AllocSetStats
#ifdef MEMORY_CONTEXT_CHECKING
......@@ -467,7 +464,8 @@ AllocSetContextCreateInternal(MemoryContext parent,
parent,
name);
set->memAllocated = set->keeper->endptr - ((char *) set);
((MemoryContext) set)->mem_allocated =
set->keeper->endptr - ((char *) set);
return (MemoryContext) set;
}
......@@ -557,7 +555,7 @@ AllocSetContextCreateInternal(MemoryContext parent,
parent,
name);
set->memAllocated = firstBlockSize;
((MemoryContext) set)->mem_allocated = firstBlockSize;
return (MemoryContext) set;
}
......@@ -619,7 +617,7 @@ AllocSetReset(MemoryContext context)
else
{
/* Normal case, release the block */
set->memAllocated -= block->endptr - ((char*) block);
context->mem_allocated -= block->endptr - ((char*) block);
#ifdef CLOBBER_FREED_MEMORY
wipe_mem(block, block->freeptr - ((char *) block));
......@@ -629,7 +627,7 @@ AllocSetReset(MemoryContext context)
block = next;
}
Assert(set->memAllocated == keepersize);
Assert(context->mem_allocated == keepersize);
/* Reset block size allocation sequence, too */
set->nextBlockSize = set->initBlockSize;
......@@ -705,7 +703,7 @@ AllocSetDelete(MemoryContext context)
AllocBlock next = block->next;
if (block != set->keeper)
set->memAllocated -= block->endptr - ((char *) block);
context->mem_allocated -= block->endptr - ((char *) block);
#ifdef CLOBBER_FREED_MEMORY
wipe_mem(block, block->freeptr - ((char *) block));
......@@ -717,7 +715,7 @@ AllocSetDelete(MemoryContext context)
block = next;
}
Assert(set->memAllocated == keepersize);
Assert(context->mem_allocated == keepersize);
/* Finally, free the context header, including the keeper block */
free(set);
......@@ -760,7 +758,7 @@ AllocSetAlloc(MemoryContext context, Size size)
if (block == NULL)
return NULL;
set->memAllocated += blksize;
context->mem_allocated += blksize;
block->aset = set;
block->freeptr = block->endptr = ((char *) block) + blksize;
......@@ -957,7 +955,7 @@ AllocSetAlloc(MemoryContext context, Size size)
if (block == NULL)
return NULL;
set->memAllocated += blksize;
context->mem_allocated += blksize;
block->aset = set;
block->freeptr = ((char *) block) + ALLOC_BLOCKHDRSZ;
......@@ -1060,7 +1058,7 @@ AllocSetFree(MemoryContext context, void *pointer)
if (block->next)
block->next->prev = block->prev;
set->memAllocated -= block->endptr - ((char*) block);
context->mem_allocated -= block->endptr - ((char*) block);
#ifdef CLOBBER_FREED_MEMORY
wipe_mem(block, block->freeptr - ((char *) block));
......@@ -1163,8 +1161,8 @@ AllocSetRealloc(MemoryContext context, void *pointer, Size size)
}
/* updated separately, not to underflow when (oldblksize > blksize) */
set->memAllocated -= oldblksize;
set->memAllocated += blksize;
context->mem_allocated -= oldblksize;
context->mem_allocated += blksize;
block->freeptr = block->endptr = ((char *) block) + blksize;
......@@ -1339,24 +1337,6 @@ AllocSetGetChunkSpace(MemoryContext context, void *pointer)
return result;
}
/*
* All memory currently allocated for this context (including fragmentation
* and freed chunks).
*
* Allocation sizes double (up to maxBlockSize), so the current block may
* represent half of the total space allocated to the context. Subtract away
* the free space at the tail of the current block, which may never have been
* touched.
*/
static Size
AllocSetMemAllocated(MemoryContext context)
{
AllocSet set = (AllocSet) context;
AllocBlock currentBlock = set->blocks;
Size tailSpace = currentBlock->endptr - currentBlock->freeptr;
return set->memAllocated - tailSpace;
}
/*
* AllocSetIsEmpty
* Is an allocset empty of any allocated space?
......@@ -1558,7 +1538,7 @@ AllocSetCheck(MemoryContext context)
name, block);
}
Assert(total_allocated == set->memAllocated);
Assert(total_allocated == context->mem_allocated);
}
#endif /* MEMORY_CONTEXT_CHECKING */
src/backend/utils/mmgr/generation.c
View file @ 2fd6a44a
......@@ -61,7 +61,6 @@ typedef struct GenerationContext
/* Generational context parameters */
Size blockSize; /* standard block size */
Size memAllocated; /* track memory allocated for this context */
GenerationBlock *block; /* current (most recently allocated) block */
dlist_head blocks; /* list of blocks */
......@@ -153,7 +152,6 @@ static void *GenerationRealloc(MemoryContext context, void *pointer, Size size);
static void GenerationReset(MemoryContext context);
static void GenerationDelete(MemoryContext context);
static Size GenerationGetChunkSpace(MemoryContext context, void *pointer);
static Size GenerationMemAllocated(MemoryContext context);
static bool GenerationIsEmpty(MemoryContext context);
static void GenerationStats(MemoryContext context,
MemoryStatsPrintFunc printfunc, void *passthru,
......@@ -173,7 +171,6 @@ static const MemoryContextMethods GenerationMethods = {
GenerationReset,
GenerationDelete,
GenerationGetChunkSpace,
GenerationMemAllocated,
GenerationIsEmpty,
GenerationStats
#ifdef MEMORY_CONTEXT_CHECKING
......@@ -261,7 +258,6 @@ GenerationContextCreate(MemoryContext parent,
/* Fill in GenerationContext-specific header fields */
set->blockSize = blockSize;
set->memAllocated = 0;
set->block = NULL;
dlist_init(&set->blocks);
......@@ -301,7 +297,7 @@ GenerationReset(MemoryContext context)
dlist_delete(miter.cur);
set->memAllocated -= block->blksize;
context->mem_allocated -= block->blksize;
#ifdef CLOBBER_FREED_MEMORY
wipe_mem(block, block->blksize);
......@@ -358,7 +354,7 @@ GenerationAlloc(MemoryContext context, Size size)
if (block == NULL)
return NULL;
set->memAllocated += blksize;
context->mem_allocated += blksize;
/* block with a single (used) chunk */
block->blksize = blksize;
......@@ -415,7 +411,7 @@ GenerationAlloc(MemoryContext context, Size size)
if (block == NULL)
return NULL;
set->memAllocated += blksize;
context->mem_allocated += blksize;
block->blksize = blksize;
block->nchunks = 0;
......@@ -532,7 +528,7 @@ GenerationFree(MemoryContext context, void *pointer)
if (set->block == block)
set->block = NULL;
set->memAllocated -= block->blksize;
context->mem_allocated -= block->blksize;
free(block);
}
......@@ -670,17 +666,6 @@ GenerationGetChunkSpace(MemoryContext context, void *pointer)
return result;
}
/*
* All memory currently allocated for this context (including fragmentation
* and freed chunks).
*/
static Size
GenerationMemAllocated(MemoryContext context)
{
GenerationContext *set = (GenerationContext *) context;
return set->memAllocated;
}
/*
* GenerationIsEmpty
* Is a GenerationContext empty of any allocated space?
......@@ -859,7 +844,7 @@ GenerationCheck(MemoryContext context)
name, nfree, block, block->nfree);
}
Assert(total_allocated == gen->memAllocated);
Assert(total_allocated == context->mem_allocated);
}
#endif /* MEMORY_CONTEXT_CHECKING */
src/backend/utils/mmgr/mcxt.c
View file @ 2fd6a44a
......@@ -469,7 +469,7 @@ MemoryContextIsEmpty(MemoryContext context)
Size
MemoryContextMemAllocated(MemoryContext context, bool recurse)
{
Size total = context->methods->mem_allocated(context);
Size total = context->mem_allocated;
AssertArg(MemoryContextIsValid(context));
......@@ -760,6 +760,7 @@ MemoryContextCreate(MemoryContext node,
node->methods = methods;
node->parent = parent;
node->firstchild = NULL;
node->mem_allocated = 0;
node->prevchild = NULL;
node->name = name;
node->ident = NULL;
......
src/backend/utils/mmgr/slab.c
View file @ 2fd6a44a
......@@ -67,7 +67,6 @@ typedef struct SlabContext
Size fullChunkSize; /* chunk size including header and alignment */
Size blockSize; /* block size */
Size headerSize; /* allocated size of context header */
Size memAllocated; /* track memory allocated for this context */
int chunksPerBlock; /* number of chunks per block */
int minFreeChunks; /* min number of free chunks in any block */
int nblocks; /* number of blocks allocated */
......@@ -133,7 +132,6 @@ static void *SlabRealloc(MemoryContext context, void *pointer, Size size);
static void SlabReset(MemoryContext context);
static void SlabDelete(MemoryContext context);
static Size SlabGetChunkSpace(MemoryContext context, void *pointer);
static Size SlabMemAllocated(MemoryContext context);
static bool SlabIsEmpty(MemoryContext context);
static void SlabStats(MemoryContext context,
MemoryStatsPrintFunc printfunc, void *passthru,
......@@ -152,7 +150,6 @@ static const MemoryContextMethods SlabMethods = {
SlabReset,
SlabDelete,
SlabGetChunkSpace,
SlabMemAllocated,
SlabIsEmpty,
SlabStats
#ifdef MEMORY_CONTEXT_CHECKING
......@@ -265,7 +262,6 @@ SlabContextCreate(MemoryContext parent,
slab->fullChunkSize = fullChunkSize;
slab->blockSize = blockSize;
slab->headerSize = headerSize;
slab->memAllocated = 0;
slab->chunksPerBlock = chunksPerBlock;
slab->minFreeChunks = 0;
slab->nblocks = 0;
......@@ -290,17 +286,6 @@ SlabContextCreate(MemoryContext parent,
return (MemoryContext) slab;
}
/*
* All memory currently allocated for this context (including fragmentation
* and freed chunks).
*/
static Size
SlabMemAllocated(MemoryContext context)
{
SlabContext *slab = (SlabContext *) context;
return slab->memAllocated;
}
/*
* SlabReset
* Frees all memory which is allocated in the given set.
......@@ -337,14 +322,14 @@ SlabReset(MemoryContext context)
#endif
free(block);
slab->nblocks--;
slab->memAllocated -= slab->blockSize;
context->mem_allocated -= slab->blockSize;
}
}
slab->minFreeChunks = 0;
Assert(slab->nblocks == 0);
Assert(slab->memAllocated == 0);
Assert(context->mem_allocated == 0);
}
/*
......@@ -422,7 +407,7 @@ SlabAlloc(MemoryContext context, Size size)
slab->minFreeChunks = slab->chunksPerBlock;
slab->nblocks += 1;
slab->memAllocated += slab->blockSize;
context->mem_allocated += slab->blockSize;
}
/* grab the block from the freelist (even the new block is there) */
......@@ -516,7 +501,7 @@ SlabAlloc(MemoryContext context, Size size)
SlabAllocInfo(slab, chunk);
Assert(slab->nblocks * slab->blockSize == slab->memAllocated);
Assert(slab->nblocks * slab->blockSize == context->mem_allocated);
return SlabChunkGetPointer(chunk);
}
......@@ -593,13 +578,13 @@ SlabFree(MemoryContext context, void *pointer)
{
free(block);
slab->nblocks--;
slab->memAllocated -= slab->blockSize;
context->mem_allocated -= slab->blockSize;
}
else
dlist_push_head(&slab->freelist[block->nfree], &block->node);
Assert(slab->nblocks >= 0);
Assert(slab->nblocks * slab->blockSize == slab->memAllocated);
Assert(slab->nblocks * slab->blockSize == context->mem_allocated);
}
/*
......@@ -819,7 +804,7 @@ SlabCheck(MemoryContext context)
}
}
Assert(slab->nblocks * slab->blockSize == slab->memAllocated);
Assert(slab->nblocks * slab->blockSize == context->mem_allocated);
}
#endif /* MEMORY_CONTEXT_CHECKING */
src/include/nodes/memnodes.h
View file @ 2fd6a44a
......@@ -63,7 +63,6 @@ typedef struct MemoryContextMethods
void (*reset) (MemoryContext context);
void (*delete_context) (MemoryContext context);
Size (*get_chunk_space) (MemoryContext context, void *pointer);
Size (*mem_allocated) (MemoryContext context);
bool (*is_empty) (MemoryContext context);
void (*stats) (MemoryContext context,
MemoryStatsPrintFunc printfunc, void *passthru,
......@@ -80,6 +79,7 @@ typedef struct MemoryContextData
/* these two fields are placed here to minimize alignment wastage: */
bool isReset; /* T = no space alloced since last reset */
bool allowInCritSection; /* allow palloc in critical section */
Size mem_allocated; /* track memory allocated for this context */
const MemoryContextMethods *methods; /* virtual function table */
MemoryContext parent; /* NULL if no parent (toplevel context) */
MemoryContext firstchild; /* head of linked list of children */
......
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