Allocating Executable Memory

[Alex Rønne Petersen]

On 31-07-2012 19:23, Maxime Chevalier wrote:
> New to the D language here. I'm working on a tracing JIT compiler and
> will need to allocate chunks of memory that are marked as executable.
>
> Is there a standard way of doing this in D, or do I need to directly
> call into mprotect? If I'm going to be calling mprotect, what's the
> cleanest way to do that, do I need to declare my own prototype for the
> function and its flags, or should I write some C code that does the call?
>
> Thanks for your help.

There's no standard way to do it. You'll have to either use mprotect or 
just pass the relevant flags when you call mmap.

The functions and constants related to this are all in core.sys.posix.mman.

See also:

* https://github.com/lycus/mci/blob/master/src/mci/core/memory.d#L71 
(and further down)
* https://github.com/lycus/mci/blob/master/src/mci/vm/code.d

-- 
Alex Rønne Petersen
alex at lycus.org
http://lycus.org