50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
/* Copyright (C) 2013-2017 Free Software Foundation, Inc.
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Contributed by Jakub Jelinek <jakub@redhat.com>.
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This file is part of the GNU Offloading and Multi Processing Library
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(libgomp).
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Libgomp is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#include "libgomp.h"
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#include <limits.h>
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void
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GOMP_teams (unsigned int num_teams, unsigned int thread_limit)
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{
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if (thread_limit)
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{
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struct gomp_task_icv *icv = gomp_icv (true);
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icv->thread_limit_var
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= thread_limit > INT_MAX ? UINT_MAX : thread_limit;
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}
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unsigned int num_blocks, block_id;
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asm ("mov.u32 %0, %%nctaid.x;" : "=r" (num_blocks));
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asm ("mov.u32 %0, %%ctaid.x;" : "=r" (block_id));
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if (!num_teams || num_teams >= num_blocks)
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num_teams = num_blocks;
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else if (block_id >= num_teams)
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{
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gomp_free_thread (nvptx_thrs);
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asm ("exit;");
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}
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gomp_num_teams_var = num_teams - 1;
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}
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