On 31/01/2019 10:29, Richard Biener wrote:
On Wed, Jan 30, 2019 at 3:46 PM Sebastian Huber
<sebastian.hu...@embedded-brains.de> wrote:
Hello,
we would like to use libgomp in a quite constraint environment. In this
environment using for example the C locale support, errno, malloc(),
realloc(), free(), and abort() are problematic. One option would be to
introduce a new header file "config/*/platform.h" which is included in
libgomp.h right after the #include "config.h". A platform could then do
something like this:
#define malloc(size) platform_malloc(size)
...
In env.c there are some uses of strto*() like this:
errno = 0;
stride = strtol (env, &env, 10);
if (errno)
return false;
I would like to introduce a new header file "strto.h" which defines
something like this:
static inline char *
gomp_strtol (char *s, long *value)
{
char *end;
errno = 0;
*value = strtol (s, &end, 10);
if (errno != 0)
return NULL;
return end;
}
Then use:
env = gomp_strtol (env, &stride);
if (env == NULL)
return false;
A platform could then provide its own "config/*/strto.h" with an
alternative implementation.
Would this be acceptable after the GCC 9 release?
I guess you could look at what nvptx and HSA (and GCN on some branch)
do here?
My problem is that our real-time operating system (RTEMS) is somewhere
in between a full blown Linux and the offload hardware. I would like to
get rid of stuff which depends on the Newlib struct _reent since this
pulls in a lot of dependencies. The heavy weight functions are just used
for the initialization (env.c) and error reporting. Containing the heap
allocation functions helps to control the memory used by OpenMP
computations.
--
Sebastian Huber, embedded brains GmbH
Address : Dornierstr. 4, D-82178 Puchheim, Germany
Phone : +49 89 189 47 41-16
Fax : +49 89 189 47 41-09
E-Mail : sebastian.hu...@embedded-brains.de
PGP : Public key available on request.
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