93 lines
3.3 KiB
C++
93 lines
3.3 KiB
C++
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/*******************************************************************************
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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 __CUDABLAS__
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#include <ConstantHelper.h>
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#include <types/types.h>
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#include <loops/type_conversions.h>
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#include <type_boilerplate.h>
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#include <cstring>
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namespace nd4j {
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ConstantHelper::ConstantHelper() {
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int numDevices = getNumberOfDevices();
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_cache.resize(numDevices);
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for (int e = 0; e < numDevices; e++) {
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std::map<ConstantDescriptor, ConstantHolder> map;
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_cache[e] = map;
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}
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}
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ConstantHelper* ConstantHelper::getInstance() {
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if (!_INSTANCE)
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_INSTANCE = new nd4j::ConstantHelper();
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return _INSTANCE;
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}
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void* ConstantHelper::replicatePointer(void *src, size_t numBytes, memory::Workspace *workspace) {
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int8_t *ptr = nullptr;
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ALLOCATE(ptr, workspace, numBytes, int8_t);
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std::memcpy(ptr, src, numBytes);
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return ptr;
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}
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int ConstantHelper::getCurrentDevice() {
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return 0L;
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}
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int ConstantHelper::getNumberOfDevices() {
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return 1;
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}
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ConstantDataBuffer* ConstantHelper::constantBuffer(const ConstantDescriptor &descriptor, nd4j::DataType dataType) {
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const auto deviceId = getCurrentDevice();
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if (_cache[deviceId].count(descriptor) == 0) {
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ConstantHolder holder;
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_cache[deviceId][descriptor] = holder;
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}
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ConstantHolder* holder = &_cache[deviceId][descriptor];
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if (holder->hasBuffer(dataType))
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return holder->getConstantDataBuffer(dataType);
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else {
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int8_t *cbuff = new int8_t[descriptor.length() * DataTypeUtils::sizeOf(dataType)];
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// create buffer with this dtype
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if (descriptor.isFloat()) {
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BUILD_DOUBLE_SELECTOR(nd4j::DataType::DOUBLE, dataType, nd4j::TypeCast::convertGeneric, (nullptr, const_cast<double *>(descriptor.floatValues().data()), descriptor.length(), cbuff), (nd4j::DataType::DOUBLE, double), LIBND4J_TYPES);
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} else if (descriptor.isInteger()) {
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BUILD_DOUBLE_SELECTOR(nd4j::DataType::INT64, dataType, nd4j::TypeCast::convertGeneric, (nullptr, const_cast<Nd4jLong *>(descriptor.integerValues().data()), descriptor.length(), cbuff), (nd4j::DataType::INT64, Nd4jLong), LIBND4J_TYPES);
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}
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ConstantDataBuffer dataBuffer(cbuff, nullptr, descriptor.length(), DataTypeUtils::sizeOf(dataType));
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holder->addBuffer(dataBuffer, dataType);
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return holder->getConstantDataBuffer(dataType);
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}
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}
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nd4j::ConstantHelper* nd4j::ConstantHelper::_INSTANCE = 0;
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}
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#endif
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