90 lines
2.9 KiB
C++
90 lines
2.9 KiB
C++
/*******************************************************************************
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* Copyright (c) 2015-2018 Skymind, Inc.
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*
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* This program and the accompanying materials are made available under the
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* terms of the Apache License, Version 2.0 which is available at
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* https://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, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* SPDX-License-Identifier: Apache-2.0
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******************************************************************************/
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//
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// @author raver119@gmail.com
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//
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#ifndef DEV_TESTS_CONSTANTTADHELPER_H
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#define DEV_TESTS_CONSTANTTADHELPER_H
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#include <dll.h>
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#include <op_boilerplate.h>
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#include <pointercast.h>
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#include <map>
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#include <vector>
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#include <mutex>
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#include <array/ShapeDescriptor.h>
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#include <array/TadDescriptor.h>
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#include <array/TadPack.h>
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namespace nd4j {
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class ND4J_EXPORT ConstantTadHelper {
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private:
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static ConstantTadHelper *_INSTANCE;
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std::mutex _mutex;
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std::vector<std::map<TadDescriptor, TadPack>> _cache;
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ConstantTadHelper();
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public:
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~ConstantTadHelper() = default;
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static ConstantTadHelper* getInstance();
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/**
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* These methods calculate Tensor-Along-Dimension(s) shape and offsets
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*
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* @param originalShape
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* @param dimensions
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* @param keepUnitiesInShape
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* @return
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*/
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TadPack tadForDimensions(const Nd4jLong *originalShape, const std::vector<int> &dimensions, const bool keepUnitiesInShape = false);
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TadPack tadForDimensions(const Nd4jLong *originalShape, int* dimensions, int dimLength, const bool keepUnitiesInShape = false);
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TadPack tadForDimensions(const Nd4jLong *originalShape, int dimensions, const bool keepUnitiesInShape = false);
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TadPack tadForDimensions(ShapeDescriptor &descriptor, std::vector<int> &dimensions, const bool keepUnitiesInShape = false);
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TadPack tadForDimensions(TadDescriptor &descriptor);
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/**
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* This method returns number of cached TAD shapes/offsets on specific device
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* @return
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*/
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FORCEINLINE int cachedEntriesForDevice(int deviceId) {
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if (deviceId > _cache.size())
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throw std::runtime_error("deviceId > number of actual devices");
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return _cache[deviceId].size();
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}
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/**
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* This method returns total number of cached TAD shapes/offsets on all devices
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* @return
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*/
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FORCEINLINE int totalCachedEntries() {
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int total = 0;
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for (int e = 0; e < _cache.size(); e++)
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total += _cache[e].size();
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return total;
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}
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};
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}
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#endif //DEV_TESTS_CONSTANTTADHELPER_H
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