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Add palloc_extended for frontend and backend.

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This commit also adds pg_malloc_extended for frontend. These interfaces
can be used to control at a lower level memory allocation using an interface
similar to MemoryContextAllocExtended. For example, the callers can specify
MCXT_ALLOC_NO_OOM if they want to suppress the "out of memory" error while
allocating the memory and handle a NULL return value.

Michael Paquier, reviewed by me.
This commit is contained in:
Fujii Masao
2015-04-03 17:36:12 +09:00
parent bc49d9324a
commit 8c8a886268
4 changed files with 85 additions and 12 deletions
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src/include/utils/palloc.h
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@ -76,6 +76,7 @@ extern void *MemoryContextAllocExtended(MemoryContext context,
extern void *palloc(Size size);
extern void *palloc0(Size size);
extern void *palloc_extended(Size size, int flags);
extern void *repalloc(void *pointer, Size size);
extern void pfree(void *pointer);