libgomp/oacc-cuda.c

   1 /* OpenACC Runtime Library: CUDA support glue.
   2
   3    Copyright (C) 2014-2017 Free Software Foundation, Inc.
   4
   5    Contributed by Mentor Embedded.
   6
   7    This file is part of the GNU Offloading and Multi Processing Library
   8    (libgomp).
   9
  10    Libgomp is free software; you can redistribute it and/or modify it
  11    under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3, or (at your option)
  13    any later version.
  14
  15    Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
  16    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  17    FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  18    more details.
  19
  20    Under Section 7 of GPL version 3, you are granted additional
  21    permissions described in the GCC Runtime Library Exception, version
  22    3.1, as published by the Free Software Foundation.
  23
  24    You should have received a copy of the GNU General Public License and
  25    a copy of the GCC Runtime Library Exception along with this program;
  26    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  27    <http://www.gnu.org/licenses/>.  */
  28
  29 #include "openacc.h"
  30 #include "config.h"
  31 #include "libgomp.h"
  32 #include "oacc-int.h"
  33
  34 void *
  35 acc_get_current_cuda_device (void)
  36 {
  37   struct goacc_thread *thr = goacc_thread ();
  38
  39   if (thr && thr->dev && thr->dev->openacc.cuda.get_current_device_func)
  40     return thr->dev->openacc.cuda.get_current_device_func ();
  41
  42   return NULL;
  43 }
  44
  45 void *
  46 acc_get_current_cuda_context (void)
  47 {
  48   struct goacc_thread *thr = goacc_thread ();
  49
  50   if (thr && thr->dev && thr->dev->openacc.cuda.get_current_context_func)
  51     return thr->dev->openacc.cuda.get_current_context_func ();
  52
  53   return NULL;
  54 }
  55
  56 void *
  57 acc_get_cuda_stream (int async)
  58 {
  59   struct goacc_thread *thr = goacc_thread ();
  60
  61   if (async < 0)
  62     return NULL;
  63
  64   if (thr && thr->dev && thr->dev->openacc.cuda.get_stream_func)
  65     return thr->dev->openacc.cuda.get_stream_func (async);
  66
  67   return NULL;
  68 }
  69
  70 int
  71 acc_set_cuda_stream (int async, void *stream)
  72 {
  73   struct goacc_thread *thr;
  74
  75   if (async < 0 || stream == NULL)
  76     return 0;
  77
  78   goacc_lazy_initialize ();
  79
  80   thr = goacc_thread ();
  81
  82   if (thr && thr->dev && thr->dev->openacc.cuda.set_stream_func)
  83     return thr->dev->openacc.cuda.set_stream_func (async, stream);
  84
  85   return -1;
  86 }