On 26/03/2014 11:38 AM, Gord Tomlin wrote:
On 2014-03-25 22:11, David Crayford wrote:
I find that I rarely need Metal/C. What I do want to do is inline
assembler into LE code.
I have found Metal to be useful in a few situations where it is
desirable to have a self-contained program with inline Assembler and
no dependencies on the LE runtime. Admittedly these occasions are not
that common; in my experience it's not very often that a situation
presents itself where C with inline Assembler is preferable to pure
Assembler.
I can think of plenty of situations, the most common being
synchronization primitives for multi-theaded code. They is no built-in
for a membar in z/OS C/C++ which is simple to code in gcc.
#define eieio() asm volatile("bcr 15,0" : : : "memory")
If I had that I can then port libraries like boosts lock free
http://www.boost.org/doc/libs/1_55_0/doc/html/lockfree.html. There's no
such thing as Metal/C++ ;).
--
Regards, Gord Tomlin
Action Software International
(a division of Mazda Computer Corporation)
Tel: (905) 470-7113, Fax: (905) 470-6507
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