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/* Copyright (C) 2013-2016 Free Software Foundation, Inc.
Contributed by Jakub Jelinek <jakub@redhat.com>.
This file is part of the GNU Offloading and Multi Processing 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/>. */
#include "libgomp.h"
#include <limits.h>
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;
}
unsigned int num_blocks, block_id;
asm ("mov.u32 %0, %%nctaid.x;" : "=r" (num_blocks));
asm ("mov.u32 %0, %%ctaid.x;" : "=r" (block_id));
if (!num_teams || num_teams >= num_blocks)
num_teams = num_blocks;
else if (block_id >= num_teams)
{
gomp_free_thread (nvptx_thrs);
asm ("exit;");
}
gomp_num_teams_var = num_teams - 1;
}
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