127 lines
3.6 KiB
C++
127 lines
3.6 KiB
C++
/* Copyright (c) 2021-2023, Arm Limited and Contributors
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 the "License";
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "open_cl_utils.h"
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#if defined(__linux__)
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# include <dlfcn.h>
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#elif defined(_WIN32)
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# include <windows.h>
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#endif
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#include <string>
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#include <vector>
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#define OPENCL_EXPORTED_FUNCTION(func_name) std::function<decltype(func_name)> func_name##_ptr = nullptr
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#define OPENCL_EXPORTED_EXTENSION_FUNCTION(func_name) std::function<decltype(func_name)> func_name##_ptr = nullptr
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#include "open_cl_functions.inl"
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static void *handle = nullptr;
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cl_platform_id load_opencl()
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{
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// Check if OpenCL is supported by trying to load the OpenCL library and getting a valid function pointer
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bool openCLAvailable = false;
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#if defined(__ANDROID__)
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// Try to find the OpenCL library on one of the following paths
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static const char *libraryPaths[] = {
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// Generic
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"/system/vendor/lib64/libOpenCL.so",
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"/system/lib64/libOpenCL.so",
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"/system/vendor/lib/libOpenCL.so",
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"/system/lib/libOpenCL.so",
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// ARM Mali
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"/system/vendor/lib64/egl/libGLES_mali.so",
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"/system/lib64/egl/libGLES_mali.so",
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"/system/vendor/lib/egl/libGLES_mali.so",
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"/system/lib/egl/libGLES_mali.so",
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// PowerVR
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"/system/vendor/lib64/libPVROCL.so",
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"/system/lib64/libPVROCL.so",
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"/system/vendor/lib/libPVROCL.so",
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"/system/lib/libPVROCL.so"};
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for (auto libraryPath : libraryPaths)
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{
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handle = dlopen(libraryPath, RTLD_LAZY);
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if (handle)
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{
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break;
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}
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}
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#elif defined(__linux__)
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// Try to find the OpenCL library on one of the following paths
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static const char *libraryPaths[] = {
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"libOpenCL.so",
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"/usr/lib/libOpenCL.so",
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"/usr/local/lib/libOpenCL.so",
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"/usr/local/lib/libpocl.so",
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"/usr/lib64/libOpenCL.so",
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"/usr/lib32/libOpenCL.so",
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"libOpenCL.so.1",
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"/usr/lib/libOpenCL.so.1",
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"/usr/local/lib/libOpenCL.so.1",
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"/usr/local/lib/libpocl.so.1",
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"/usr/lib64/libOpenCL.so.1",
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"/usr/lib32/libOpenCL.so.1"};
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for (auto libraryPath : libraryPaths)
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{
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handle = dlopen(libraryPath, RTLD_LAZY);
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if (handle)
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{
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break;
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}
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}
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#elif defined(_WIN32)
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handle = LoadLibraryA("OpenCL.dll");
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#endif
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if (handle == nullptr)
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{
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return nullptr;
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}
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#if defined(_WIN32)
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# define OPENCL_EXPORTED_FUNCTION(func_name) func_name##_ptr = reinterpret_cast<decltype(func_name) *>(GetProcAddress((HMODULE) handle, #func_name))
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#else
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# define OPENCL_EXPORTED_FUNCTION(func_name) func_name##_ptr = reinterpret_cast<decltype(func_name) *>(dlsym(handle, #func_name))
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#endif
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#include "open_cl_functions.inl"
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cl_platform_id platform_id = nullptr;
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cl_uint num_platforms;
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clGetPlatformIDs_ptr(1, &platform_id, &num_platforms);
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#define OPENCL_EXPORTED_EXTENSION_FUNCTION(func_name) func_name##_ptr = \
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reinterpret_cast<decltype(func_name) *>(clGetExtensionFunctionAddressForPlatform_ptr(platform_id, #func_name))
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#include "open_cl_functions.inl"
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return platform_id;
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}
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void unload_opencl()
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{
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if (handle)
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{
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#if defined(_WIN32)
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FreeLibrary((HMODULE) handle);
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#else
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dlclose(handle);
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#endif
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handle = nullptr;
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}
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}
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