[m-users.] How to write stack-friendly mercury-code?

Julien Fischer 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.

For completeness:

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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