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/* Copyright (C) 2013-2014 Free Software Foundation, Inc.
Contributed by Jakub Jelinek <jakub@redhat.com>.
This file is part of the GNU OpenMP Library (libgomp).
Libgomp is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
/* This file handles the maintainence of threads in response to team
creation and termination. */
#include "libgomp.h"
#include <limits.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
attribute_hidden int
gomp_get_num_devices (void)
{
return 0;
}
/* Called when encountering a target directive. If DEVICE
is -1, it means use device-var ICV. If it is -2 (or any other value
larger than last available hw device, use host fallback.
FN is address of host code, OPENMP_TARGET contains value of the
__OPENMP_TARGET__ symbol in the shared library or binary that invokes
GOMP_target. HOSTADDRS, SIZES and KINDS are arrays
with MAPNUM entries, with addresses of the host objects,
sizes of the host objects (resp. for pointer kind pointer bias
and assumed sizeof (void *) size) and kinds. */
void
GOMP_target (int device, void (*fn) (void *), const void *openmp_target,
size_t mapnum, void **hostaddrs, size_t *sizes,
unsigned char *kinds)
{
/* Host fallback. */
struct gomp_thread old_thr, *thr = gomp_thread ();
old_thr = *thr;
memset (thr, '\0', sizeof (*thr));
if (gomp_places_list)
{
thr->place = old_thr.place;
thr->ts.place_partition_len = gomp_places_list_len;
}
fn (hostaddrs);
gomp_free_thread (thr);
*thr = old_thr;
}
void
GOMP_target_data (int device, const void *openmp_target, size_t mapnum,
void **hostaddrs, size_t *sizes, unsigned char *kinds)
{
}
void
GOMP_target_end_data (void)
{
}
void
GOMP_target_update (int device, const void *openmp_target, size_t mapnum,
void **hostaddrs, size_t *sizes, unsigned char *kinds)
{
}
void
GOMP_teams (unsigned int num_teams, unsigned int thread_limit)
{
if (thread_limit)
{
struct gomp_task_icv *icv = gomp_icv (true);
icv->thread_limit_var
= thread_limit > INT_MAX ? UINT_MAX : thread_limit;
}
(void) num_teams;
}
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