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| author | Robert Haas <rhaas@postgresql.org> | 2015-01-30 12:56:48 -0500 |
|---|---|---|
| committer | Robert Haas <rhaas@postgresql.org> | 2015-01-30 12:56:48 -0500 |
| commit | bd4e2fd97d3db84bd970d6051f775b7ff2af0e9d (patch) | |
| tree | 661eb101e173451f8fe5a2ff7dd3dfac9165c01b /src/include/utils/palloc.h | |
| parent | 3d660d33aab2f1eb98367a84eb2addf3e0969c05 (diff) | |
Provide a way to supress the "out of memory" error when allocating.
Using the new interface MemoryContextAllocExtended, callers can
specify MCXT_ALLOC_NO_OOM if they are prepared to handle a NULL
return value.
Michael Paquier, reviewed and somewhat revised by me.
Diffstat (limited to 'src/include/utils/palloc.h')
| -rw-r--r-- | src/include/utils/palloc.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/include/utils/palloc.h b/src/include/utils/palloc.h index ca03f2b3341..f586fd5535b 100644 --- a/src/include/utils/palloc.h +++ b/src/include/utils/palloc.h @@ -43,11 +43,20 @@ typedef struct MemoryContextData *MemoryContext; extern PGDLLIMPORT MemoryContext CurrentMemoryContext; /* + * Flags for MemoryContextAllocExtended. + */ +#define MCXT_ALLOC_HUGE 0x01 /* allow huge allocation (> 1 GB) */ +#define MCXT_ALLOC_NO_OOM 0x02 /* no failure if out-of-memory */ +#define MCXT_ALLOC_ZERO 0x04 /* zero allocated memory */ + +/* * Fundamental memory-allocation operations (more are in utils/memutils.h) */ extern void *MemoryContextAlloc(MemoryContext context, Size size); extern void *MemoryContextAllocZero(MemoryContext context, Size size); extern void *MemoryContextAllocZeroAligned(MemoryContext context, Size size); +extern void *MemoryContextAllocExtended(MemoryContext context, + Size size, int flags); extern void *palloc(Size size); extern void *palloc0(Size size); |