106 lines
2.7 KiB
C++
106 lines
2.7 KiB
C++
/*
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* Copyright (c) 2015, PHILIPPE TILLET. All rights reserved.
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*
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* This file is part of ISAAC.
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*
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* ISAAC is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*/
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#include <iostream>
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#include "isaac/driver/context.h"
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#include "isaac/driver/program.h"
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#include "helpers/ocl/infos.hpp"
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#include "sys/getenv.hpp"
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#include "sys/mkdir.hpp"
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namespace isaac
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{
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namespace driver
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{
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std::string Context::cache_path()
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{
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//user-specified cache path
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std::string result = tools::getenv("ISAAC_CACHE_PATH");
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if(!result.empty()){
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if(tools::mkpath(result)==0)
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return result;
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}
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//create in home
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result = tools::getenv("HOME");
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if(!result.empty())
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{
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result = result + "/.isaac/cache/";
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if(tools::mkpath(result)==0)
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return result;
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}
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//couldn't find a directory
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return "";
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}
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Context::Context(CUcontext const & context, bool take_ownership) : backend_(CUDA), device_(device(context), false), cache_path_(cache_path()), h_(backend_, take_ownership)
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{
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h_.cu() = context;
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}
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Context::Context(cl_context const & context, bool take_ownership) : backend_(OPENCL), device_(ocl::info<CL_CONTEXT_DEVICES>(context)[0], false), cache_path_(cache_path()), h_(backend_, take_ownership)
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{
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h_.cl() = context;
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}
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Context::Context(Device const & device) : backend_(device.backend_), device_(device), cache_path_(cache_path()), h_(backend_, true)
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{
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switch(backend_)
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{
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case CUDA:
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cuda::check(dispatch::cuCtxCreate(&h_.cu(), CU_CTX_SCHED_AUTO, device.h_.cu()));
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break;
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case OPENCL:
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cl_int err;
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h_.cl() = dispatch::clCreateContext(NULL, 1, &device_.h_.cl(), NULL, NULL, &err);
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ocl::check(err);
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break;
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default:
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throw;
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}
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}
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bool Context::operator==(Context const & other) const
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{
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return h_==other.h_;
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}
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bool Context::operator<(Context const & other) const
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{
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return h_<other.h_;
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}
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Device const & Context::device() const
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{ return device_; }
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backend_type Context::backend() const
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{ return backend_; }
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}
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}
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