101 lines
2.8 KiB
C++
101 lines
2.8 KiB
C++
/* Copyright 2015-2017 Philippe Tillet
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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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 "isaac/tools/sys/getenv.hpp"
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#include "isaac/tools/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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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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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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Context::handle_type const & Context::handle() const
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{ return h_; }
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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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