[m-users.] How to write stack-friendly mercury-code?
jfischer at opturion.com
Tue Mar 29 15:58:07 AEDT 2016
On Mon, 28 Mar 2016, Paul Bone wrote:
> + Use a segmented stack
> If you use --stack-segments (an stseg grade component, compatible with
> low level C grades) then a segmented stack will be used, a segmented
> stack grows and shrinks as necessary. Unbounded recursion can now cause
> your computer to thrash, rather than just crashing your program. This
> is the easiest option, but it doesn't reduce your program's memory usage.
> It's a good option if the limit is the size of the stack, and not how
> much RAM you have.
> + Increase the size of the stack.
> In low-level graces, like asm_fast, put MERCURY_OPTIONS="--detstack-size
> N" in your environment. Check the Mercury user's guide.
In high-level C grades, Mercury programs just use the normal C stack. On
Unix-like platforms on you can adjust this using ulimit. On Windows,
you can use mmc's '--cstack-reserve-size' option to set the stack size
at compile time. (Alternatively, if you have Microsoft's dev tools
installed you can use the editbin utility to modify the size.)
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