Re: Sbrk function

[koogler@bedford.progress.com (David Koogler) writes:]

>The gcc 2.6.2 driver needs sbrk() and I am wondering if anyone has implemented
>it, or how to go about replacing it?

(Long pause while I go look at my gcc-2.4 tree)

My, not very portable, is it? But that's just a flag to print memory, so
why don't you just drop it? Or did somebody come up with some *other* use
for sbrk()? I can pull down some 2.6.2 sources if necessary.

sbrk() comes from the days when your address space was small (64k) and was
organized as:

        0 etext edata end sbrk(0) 0xFFFF
        Text....Date....BSS.....Heap..... ........Stack

So sbrk(0) was your way of asking where the heap currently ended.

With a VM operating system with a sparse 32-bit address space, the question
makes very little sense at all.

                                                Andy
Received on Fri Mar 24 12:43:19 1995