libgomp/oacc-cuda.c

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