mirror of https://github.com/opencv/opencv.git
Vladislav Vinogradov
14 years ago
parent
b6c195d44c
commit
f906c9b259
5 changed files with 31 additions and 215 deletions
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/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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// By downloading, copying, installing or using the software you agree to this license.
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// If you do not agree to this license, do not download, install,
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// copy or use the software.
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//
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//
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// License Agreement
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
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// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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//
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// * Redistribution's of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Redistribution's in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// * The name of the copyright holders may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// This software is provided by the copyright holders and contributors "as is" and
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// any express or implied warranties, including, but not limited to, the implied
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
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// In no event shall the Intel Corporation or contributors be liable for any direct,
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
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// loss of use, data, or profits; or business interruption) however caused
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// and on any theory of liability, whether in contract, strict liability,
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#include "precomp.hpp" |
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#if !defined(HAVE_CUDA) |
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namespace cv { namespace gpu { |
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class MultiGpuManager::Impl {}; |
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MultiGpuManager::MultiGpuManager() { throw_nogpu(); } |
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MultiGpuManager::~MultiGpuManager() {} |
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void MultiGpuManager::init() { throw_nogpu(); } |
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void MultiGpuManager::gpuOn(int) { throw_nogpu(); } |
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void MultiGpuManager::gpuOff() { throw_nogpu(); } |
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}} |
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#else |
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#include <vector> |
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#include <cuda.h> |
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#define cuSafeCall(expr) safeCall(expr, #expr, __FILE__, __LINE__) |
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using namespace std; |
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namespace cv { namespace gpu { |
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class MultiGpuManager::Impl |
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{ |
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public: |
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Impl(); |
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~Impl() |
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{ |
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for (int i = 0; i < num_devices_; ++i) |
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cuSafeCall(cuCtxDestroy(contexts_[i])); |
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} |
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void gpuOn(int gpu_id) |
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{ |
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if (gpu_id < 0 || gpu_id >= num_devices_) |
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CV_Error(CV_StsBadArg, "MultiGpuManager::gpuOn: GPU ID is out of range"); |
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cuSafeCall(cuCtxPushCurrent(contexts_[gpu_id])); |
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} |
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void gpuOff() |
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{ |
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CUcontext prev_context; |
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cuSafeCall(cuCtxPopCurrent(&prev_context)); |
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} |
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private: |
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void safeCall(CUresult code, const char* expr, const char* file, int line) |
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{ |
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if (code != CUDA_SUCCESS) |
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error(expr, file, line, ""); |
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} |
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int num_devices_; |
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vector<CUcontext> contexts_; |
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}; |
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MultiGpuManager::Impl::Impl(): num_devices_(0) |
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{ |
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num_devices_ = getCudaEnabledDeviceCount(); |
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contexts_.resize(num_devices_); |
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cuSafeCall(cuInit(0)); |
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CUdevice device; |
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CUcontext prev_context; |
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for (int i = 0; i < num_devices_; ++i) |
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{ |
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cuSafeCall(cuDeviceGet(&device, i)); |
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cuSafeCall(cuCtxCreate(&contexts_[i], 0, device)); |
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cuSafeCall(cuCtxPopCurrent(&prev_context)); |
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} |
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} |
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MultiGpuManager::MultiGpuManager() {} |
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MultiGpuManager::~MultiGpuManager() {} |
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void MultiGpuManager::init() |
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{ |
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impl_ = Ptr<Impl>(new Impl()); |
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} |
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void MultiGpuManager::gpuOn(int gpu_id) |
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{ |
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if (impl_.empty()) |
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CV_Error(CV_StsNullPtr, "MultiGpuManager::gpuOn: must be initialized before any calls"); |
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impl_->gpuOn(gpu_id); |
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} |
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void MultiGpuManager::gpuOff() |
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{ |
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if (impl_.empty()) |
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CV_Error(CV_StsNullPtr, "MultiGpuManager::gpuOff: must be initialized before any calls"); |
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impl_->gpuOff(); |
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} |
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}} |
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#endif |
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