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111
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1 /* OpenACC Runtime Library: CUDA support glue.
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2
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145
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3 Copyright (C) 2014-2020 Free Software Foundation, Inc.
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4
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5 Contributed by Mentor Embedded.
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6
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7 This file is part of the GNU Offloading and Multi Processing Library
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8 (libgomp).
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9
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10 Libgomp is free software; you can redistribute it and/or modify it
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11 under the terms of the GNU General Public License as published by
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12 the Free Software Foundation; either version 3, or (at your option)
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13 any later version.
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14
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15 Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
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16 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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17 FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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18 more details.
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19
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20 Under Section 7 of GPL version 3, you are granted additional
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21 permissions described in the GCC Runtime Library Exception, version
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22 3.1, as published by the Free Software Foundation.
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23
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24 You should have received a copy of the GNU General Public License and
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25 a copy of the GCC Runtime Library Exception along with this program;
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26 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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27 <http://www.gnu.org/licenses/>. */
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28
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29 #include "openacc.h"
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30 #include "libgomp.h"
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31 #include "oacc-int.h"
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32 #include <assert.h>
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33
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34 void *
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35 acc_get_current_cuda_device (void)
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36 {
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37 struct goacc_thread *thr = goacc_thread ();
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38
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39 void *ret = NULL;
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40 if (thr && thr->dev && thr->dev->openacc.cuda.get_current_device_func)
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145
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41 {
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42 acc_prof_info prof_info;
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43 acc_api_info api_info;
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44 bool profiling_p = GOACC_PROFILING_SETUP_P (thr, &prof_info, &api_info);
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45
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46 ret = thr->dev->openacc.cuda.get_current_device_func ();
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47
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145
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48 if (profiling_p)
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49 {
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50 thr->prof_info = NULL;
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51 thr->api_info = NULL;
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52 }
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53 }
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54
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55 return ret;
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111
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56 }
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57
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58 void *
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59 acc_get_current_cuda_context (void)
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60 {
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61 struct goacc_thread *thr = goacc_thread ();
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62
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63 void *ret = NULL;
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64 if (thr && thr->dev && thr->dev->openacc.cuda.get_current_context_func)
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145
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65 {
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66 acc_prof_info prof_info;
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67 acc_api_info api_info;
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68 bool profiling_p = GOACC_PROFILING_SETUP_P (thr, &prof_info, &api_info);
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69
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70 ret = thr->dev->openacc.cuda.get_current_context_func ();
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71
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72 if (profiling_p)
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73 {
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74 thr->prof_info = NULL;
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75 thr->api_info = NULL;
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76 }
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77 }
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78
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79 return ret;
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111
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80 }
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81
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82 void *
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83 acc_get_cuda_stream (int async)
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84 {
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85 struct goacc_thread *thr = goacc_thread ();
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86
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87 if (!async_valid_p (async))
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88 return NULL;
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89
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90 void *ret = NULL;
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91 if (thr && thr->dev && thr->dev->openacc.cuda.get_stream_func)
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145
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92 {
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93 goacc_aq aq = lookup_goacc_asyncqueue (thr, false, async);
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94 if (!aq)
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95 return ret;
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96
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97 acc_prof_info prof_info;
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98 acc_api_info api_info;
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99 bool profiling_p = GOACC_PROFILING_SETUP_P (thr, &prof_info, &api_info);
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100 if (profiling_p)
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101 {
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102 prof_info.async = async;
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103 prof_info.async_queue = prof_info.async;
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104 }
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105
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106 ret = thr->dev->openacc.cuda.get_stream_func (aq);
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107
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108 if (profiling_p)
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109 {
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110 thr->prof_info = NULL;
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111 thr->api_info = NULL;
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112 }
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113 }
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114
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115 return ret;
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111
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116 }
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117
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118 int
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119 acc_set_cuda_stream (int async, void *stream)
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120 {
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121 struct goacc_thread *thr;
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122
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123 if (!async_valid_p (async) || stream == NULL)
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124 return 0;
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125
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126 goacc_lazy_initialize ();
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127
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128 thr = goacc_thread ();
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129
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130 int ret = -1;
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131 if (thr && thr->dev && thr->dev->openacc.cuda.set_stream_func)
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145
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132 {
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133 acc_prof_info prof_info;
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134 acc_api_info api_info;
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135 bool profiling_p = GOACC_PROFILING_SETUP_P (thr, &prof_info, &api_info);
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136 if (profiling_p)
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137 {
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138 prof_info.async = async;
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139 prof_info.async_queue = prof_info.async;
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140 }
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141
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142 goacc_aq aq = get_goacc_asyncqueue (async);
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143 /* Due to not using an asyncqueue for "acc_async_sync", this cannot be
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144 used to change the CUDA stream associated with "acc_async_sync". */
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145 if (!aq)
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146 {
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147 assert (async == acc_async_sync);
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148 gomp_debug (0, "Refusing request to set CUDA stream associated"
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149 " with \"acc_async_sync\"\n");
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150 ret = 0;
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151 goto out_prof;
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152 }
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153 gomp_mutex_lock (&thr->dev->openacc.async.lock);
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154 ret = thr->dev->openacc.cuda.set_stream_func (aq, stream);
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155 gomp_mutex_unlock (&thr->dev->openacc.async.lock);
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156
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157 out_prof:
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158 if (profiling_p)
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159 {
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160 thr->prof_info = NULL;
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161 thr->api_info = NULL;
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162 }
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163 }
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164
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165 return ret;
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111
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166 }
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