Re: Safe memory allocation functions

On 2015-01-27 17:27:53 +0900, Michael Paquier wrote:
> Alvaro Herrera wrote:
> >> So how about something like
> >>
> >> #define ALLOCFLAG_HUGE                      0x01
> >> #define ALLOCFLAG_NO_ERROR_ON_OOM   0x02
> >> void *
> >> MemoryContextAllocFlags(MemoryContext context, Size size, int flags);
> The flag for huge allocations may be useful, but I don't actually see
> much value in the flag ALLOC_NO_OOM if the stuff in aset.c returns
> unconditionally NULL in case of an OOM and we let palloc complain
> about an OOM when allocation returns NULL. Something I am missing
> perhaps?

I guess the idea is to have *user facing* MemoryContextAllocExtended()
that can do both huge and no-oom allocations. Otherwise we need palloc
like wrappers for all combinations.
We're certainly not just going to ignore memory allocation failures
generally in in MemoryContextAllocExtended()....

Greetings,

Andres Freund

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