cavis/libnd4j/include/helpers/cpu/ConstantHelper.cpp

129 lines
4.2 KiB
C++

/*******************************************************************************
* Copyright (c) 2015-2018 Skymind, Inc.
* Copyright (c) 2019 Konduit K.K.
*
* This program and the accompanying materials are made available under the
* terms of the Apache License, Version 2.0 which is available at
* https://www.apache.org/licenses/LICENSE-2.0.
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
* SPDX-License-Identifier: Apache-2.0
******************************************************************************/
//
// @author raver119@gmail.com
//
#ifndef __CUDABLAS__
#include <helpers/ConstantHelper.h>
#include <execution/AffinityManager.h>
#include <types/types.h>
#include <loops/type_conversions.h>
#include <system/type_boilerplate.h>
#include <cstring>
namespace sd {
ConstantHelper::ConstantHelper() {
int numDevices = getNumberOfDevices();
_cache.resize(numDevices);
_counters.resize(numDevices);
for (int e = 0; e < numDevices; e++) {
MAP_IMPL<ConstantDescriptor, ConstantHolder*> map;
_cache[e] = map;
_counters[e] = 0L;
}
}
ConstantHelper* ConstantHelper::getInstance() {
if (!_INSTANCE)
_INSTANCE = new sd::ConstantHelper();
return _INSTANCE;
}
void* ConstantHelper::replicatePointer(void *src, size_t numBytes, memory::Workspace *workspace) {
if (workspace == nullptr) {
auto deviceId = getCurrentDevice();
_counters[deviceId] += numBytes;
}
int8_t *ptr = nullptr;
ALLOCATE(ptr, workspace, numBytes, int8_t);
std::memcpy(ptr, src, numBytes);
return ptr;
}
int ConstantHelper::getCurrentDevice() {
return AffinityManager::currentDeviceId();
}
int ConstantHelper::getNumberOfDevices() {
return AffinityManager::numberOfDevices();
}
ConstantDataBuffer* ConstantHelper::constantBuffer(const ConstantDescriptor &descriptor, sd::DataType dataType) {
const auto deviceId = getCurrentDevice();
// we're locking away cache modification
_mutexHolder.lock();
if (_cache[deviceId].count(descriptor) == 0) {
_cache[deviceId][descriptor] = new ConstantHolder();
}
auto holder = _cache[deviceId][descriptor];
// releasing cache lock
_mutexHolder.unlock();
ConstantDataBuffer* result;
// access to this holder instance is synchronous
holder->mutex()->lock();
if (holder->hasBuffer(dataType))
result = holder->getConstantDataBuffer(dataType);
else {
auto size = descriptor.length() * DataTypeUtils::sizeOf(dataType);
auto cbuff = new int8_t[size];
_counters[deviceId] += size;
// create buffer with this dtype
if (descriptor.isFloat()) {
BUILD_DOUBLE_SELECTOR(sd::DataType::DOUBLE, dataType, sd::TypeCast::convertGeneric, (nullptr, const_cast<double *>(descriptor.floatValues().data()), descriptor.length(), cbuff), (sd::DataType::DOUBLE, double), LIBND4J_TYPES);
} else if (descriptor.isInteger()) {
BUILD_DOUBLE_SELECTOR(sd::DataType::INT64, dataType, sd::TypeCast::convertGeneric, (nullptr, const_cast<Nd4jLong *>(descriptor.integerValues().data()), descriptor.length(), cbuff), (sd::DataType::INT64, Nd4jLong), LIBND4J_TYPES);
}
ConstantDataBuffer dataBuffer(cbuff, nullptr, descriptor.length(), DataTypeUtils::sizeOf(dataType));
holder->addBuffer(dataBuffer, dataType);
result = holder->getConstantDataBuffer(dataType);
}
holder->mutex()->unlock();
return result;
}
Nd4jLong ConstantHelper::getCachedAmount(int deviceId) {
int numDevices = getNumberOfDevices();
if (deviceId > numDevices || deviceId < 0)
return 0L;
else
return _counters[deviceId];
}
sd::ConstantHelper* sd::ConstantHelper::_INSTANCE = 0;
}
#endif