Thread: Question about the MemoryContext

Question about the MemoryContext

From
Gevik Babakhani
Date:
Could someone please explain the MemoryContext switching. For example
MemoryContextSwitchTo function. How does this work?





Re: Question about the MemoryContext

From
Tom Lane
Date:
Gevik Babakhani <pgdev@xs4all.nl> writes:
> Could someone please explain the MemoryContext switching. For example
> MemoryContextSwitchTo function. How does this work?

src/backend/utils/mmgr/README might help.  It's somewhat pointed at
people who've already been hacking the backend, but I think it will
give you the idea.

The basic point is that palloc() allocates memory in whichever context
was last selected as CurrentMemoryContext by MemoryContextSwitchTo.
        regards, tom lane


Re: Question about the MemoryContext

From
Gevik Babakhani
Date:
Thank you :)

On Sat, 2006-04-22 at 18:16 -0400, Tom Lane wrote:
> Gevik Babakhani <pgdev@xs4all.nl> writes:
> > Could someone please explain the MemoryContext switching. For example
> > MemoryContextSwitchTo function. How does this work?
> 
> src/backend/utils/mmgr/README might help.  It's somewhat pointed at
> people who've already been hacking the backend, but I think it will
> give you the idea.
> 
> The basic point is that palloc() allocates memory in whichever context
> was last selected as CurrentMemoryContext by MemoryContextSwitchTo.
> 
>             regards, tom lane
> 
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