| /* OpenACC Runtime Library: CUDA support glue. |
| |
| Copyright (C) 2014-2020 Free Software Foundation, Inc. |
| |
| Contributed by Mentor Embedded. |
| |
| 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 "openacc.h" |
| #include "libgomp.h" |
| #include "oacc-int.h" |
| #include <assert.h> |
| |
| void * |
| acc_get_current_cuda_device (void) |
| { |
| struct goacc_thread *thr = goacc_thread (); |
| |
| void *ret = NULL; |
| if (thr && thr->dev && thr->dev->openacc.cuda.get_current_device_func) |
| { |
| acc_prof_info prof_info; |
| acc_api_info api_info; |
| bool profiling_p = GOACC_PROFILING_SETUP_P (thr, &prof_info, &api_info); |
| |
| ret = thr->dev->openacc.cuda.get_current_device_func (); |
| |
| if (profiling_p) |
| { |
| thr->prof_info = NULL; |
| thr->api_info = NULL; |
| } |
| } |
| |
| return ret; |
| } |
| |
| void * |
| acc_get_current_cuda_context (void) |
| { |
| struct goacc_thread *thr = goacc_thread (); |
| |
| void *ret = NULL; |
| if (thr && thr->dev && thr->dev->openacc.cuda.get_current_context_func) |
| { |
| acc_prof_info prof_info; |
| acc_api_info api_info; |
| bool profiling_p = GOACC_PROFILING_SETUP_P (thr, &prof_info, &api_info); |
| |
| ret = thr->dev->openacc.cuda.get_current_context_func (); |
| |
| if (profiling_p) |
| { |
| thr->prof_info = NULL; |
| thr->api_info = NULL; |
| } |
| } |
| |
| return ret; |
| } |
| |
| void * |
| acc_get_cuda_stream (int async) |
| { |
| struct goacc_thread *thr = goacc_thread (); |
| |
| if (!async_valid_p (async)) |
| return NULL; |
| |
| void *ret = NULL; |
| if (thr && thr->dev && thr->dev->openacc.cuda.get_stream_func) |
| { |
| goacc_aq aq = lookup_goacc_asyncqueue (thr, false, async); |
| if (!aq) |
| return ret; |
| |
| acc_prof_info prof_info; |
| acc_api_info api_info; |
| bool profiling_p = GOACC_PROFILING_SETUP_P (thr, &prof_info, &api_info); |
| if (profiling_p) |
| { |
| prof_info.async = async; |
| prof_info.async_queue = prof_info.async; |
| } |
| |
| ret = thr->dev->openacc.cuda.get_stream_func (aq); |
| |
| if (profiling_p) |
| { |
| thr->prof_info = NULL; |
| thr->api_info = NULL; |
| } |
| } |
| |
| return ret; |
| } |
| |
| int |
| acc_set_cuda_stream (int async, void *stream) |
| { |
| struct goacc_thread *thr; |
| |
| if (!async_valid_p (async) || stream == NULL) |
| return 0; |
| |
| goacc_lazy_initialize (); |
| |
| thr = goacc_thread (); |
| |
| int ret = -1; |
| if (thr && thr->dev && thr->dev->openacc.cuda.set_stream_func) |
| { |
| acc_prof_info prof_info; |
| acc_api_info api_info; |
| bool profiling_p = GOACC_PROFILING_SETUP_P (thr, &prof_info, &api_info); |
| if (profiling_p) |
| { |
| prof_info.async = async; |
| prof_info.async_queue = prof_info.async; |
| } |
| |
| goacc_aq aq = get_goacc_asyncqueue (async); |
| /* Due to not using an asyncqueue for "acc_async_sync", this cannot be |
| used to change the CUDA stream associated with "acc_async_sync". */ |
| if (!aq) |
| { |
| assert (async == acc_async_sync); |
| gomp_debug (0, "Refusing request to set CUDA stream associated" |
| " with \"acc_async_sync\"\n"); |
| ret = 0; |
| goto out_prof; |
| } |
| gomp_mutex_lock (&thr->dev->openacc.async.lock); |
| ret = thr->dev->openacc.cuda.set_stream_func (aq, stream); |
| gomp_mutex_unlock (&thr->dev->openacc.async.lock); |
| |
| out_prof: |
| if (profiling_p) |
| { |
| thr->prof_info = NULL; |
| thr->api_info = NULL; |
| } |
| } |
| |
| return ret; |
| } |