98 lines
3.2 KiB
C++
98 lines
3.2 KiB
C++
/**
|
|
* Copyright 2021 Huawei Technologies Co., Ltd
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed 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.
|
|
*/
|
|
|
|
#ifndef MINDSPORE_INCLUDE_API_ALLOCATOR_H
|
|
#define MINDSPORE_INCLUDE_API_ALLOCATOR_H
|
|
|
|
#include <memory>
|
|
#include "include/api/types.h"
|
|
|
|
namespace mindspore {
|
|
/// \brief Allocator defined a memory pool for malloc memory and free memory dynamically.
|
|
class MS_API Allocator {
|
|
public:
|
|
/// \brief Destructor of MindSpore Allocator.
|
|
virtual ~Allocator() = default;
|
|
|
|
/// \brief Method to request memory.
|
|
///
|
|
/// \param[in] size Define the memory size to request.
|
|
virtual void *Malloc(size_t size) = 0;
|
|
|
|
/// \brief Method to request memory.
|
|
///
|
|
/// \param[in] weight Defines the width of memory to request
|
|
/// \param[in] height Defines the height of memory to request
|
|
/// \param[in] type Defines the data type of memory to request
|
|
virtual void *Malloc(size_t weight, size_t height, DataType type) {
|
|
return nullptr;
|
|
}
|
|
|
|
/// \brief Method to free memory.
|
|
///
|
|
/// \param[in] ptr Define the pointer of a certain memory.
|
|
virtual void Free(void *ptr) = 0;
|
|
|
|
/// \brief Reference count of a certain memory.
|
|
///
|
|
/// \param[in] ptr Define the pointer of a certain memory.
|
|
///
|
|
/// \return Reference count of a certain memory currently.
|
|
virtual int RefCount(void *ptr) = 0;
|
|
|
|
/// \brief Set reference count of a certain memory.
|
|
///
|
|
/// \param[in] ptr Define the pointer of a certain memory.
|
|
/// \param[in] ref_count Define the reference count to set.
|
|
///
|
|
/// \return Reference count of a certain memory after setting.
|
|
virtual int SetRefCount(void *ptr, int ref_count) = 0;
|
|
|
|
/// \brief Decrease the reference count of a certain memory.
|
|
///
|
|
/// \param[in] ptr Define the pointer of a certain memory.
|
|
/// \param[in] ref_count Define the reference count to reduce.
|
|
///
|
|
/// \return Reference count of a certain memory after decreating.
|
|
virtual int DecRefCount(void *ptr, int ref_count) = 0;
|
|
|
|
/// \brief Increase the reference count of a certain memory.
|
|
///
|
|
/// \param[in] ptr Define the pointer of a certain memory.
|
|
/// \param[in] ref_count Define the reference count to increase.
|
|
///
|
|
/// \return Reference count of a certain memory after increasing.
|
|
virtual int IncRefCount(void *ptr, int ref_count) = 0;
|
|
|
|
/// \brief Static method to create an allocator.
|
|
///
|
|
/// \return Smart pointer of an allocator.
|
|
static std::shared_ptr<Allocator> Create();
|
|
|
|
/// \brief Prepare a certain memory.
|
|
///
|
|
/// \param[in] ptr Define the pointer of a certain memory to prepare.
|
|
///
|
|
/// \return Pointer of ready memory.
|
|
virtual void *Prepare(void *ptr) { return ptr; }
|
|
|
|
protected:
|
|
// memory aligned bytes
|
|
size_t aligned_size_ = 32;
|
|
};
|
|
} // namespace mindspore
|
|
#endif // MINDSPORE_INCLUDE_API_ALLOCATOR_H
|