[SOLVED] pthread : Avoiding thread specific heaps

Hi,

I notice that when I allocate heap memory (malloc) from a threads (created using pthread_create), each thread seems to be using a separate heap by default. Is it possible to change this behavior using some parameters/environment variables ? If possible, I would like to use a single heap, even if that means thread contention and slowdown due to internal locking/unlocking that may happen in allocation/free functions.

Thanks in advance!
GS

I guess, you're trying to conserve some memory space.
I've read glibc/malloc/malloc.c briefly.
It seems that the arenas are thread-specific.
Here they say that a heap is a collection of arenas (sub-heaps).

It's obvious, that you can't disable this feature at runtime.

Yes, it is not possible, but you can lower the default size of that heap.

ok. Thanks a lot for the help !