Re: hash_destroy on the hash table allocated with TopMemoryContext

On Wed, Apr 17, 2024 at 1:04 PM Sharique Muhammed <shq78758(at)gmail(dot)com>
wrote:

> Hi,
>
> I was looking for a pattern to destroy a hashtable (dynahash).allocated
> in TopMemoryContext
> I found one pattern : create_seq_hashtable uses TopMemoryContext
> memory context to create hash table. It calls hash_destroy in
> ResetSequenceCaches. hash_destroy will destroy the memory
> context(TopMemoryContext). Is it the right way to use hash_destroy ?
>

The context used to pass hash_create() is used to create a child memory
context. The hash table is allocated in the child memory context and it's
that context which is destoryed by hash_destory(). Isn't it?

>
> I have allocated a hash table in TopMemoryContext context and I want
> to destroy it. It seems to me that there is no function to destroy hash
> table allocated in TopMemoryContext context.
>
>
How did you create hash table in TopMemoryContext?

--
Best Wishes,
Ashutosh Bapat