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/*
* Copyright (c) 2017-2020 Arm Limited.
*
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef ARM_COMPUTE_MEMORYGROUP_H
#define ARM_COMPUTE_MEMORYGROUP_H
#include "arm_compute/core/Error.h"
#include "arm_compute/core/utils/misc/Macros.h"
#include "arm_compute/runtime/IMemoryGroup.h"
#include "arm_compute/runtime/IMemoryManager.h"
#include "arm_compute/runtime/IMemoryPool.h"
#include <cstddef>
#include <memory>
namespace arm_compute
{
// Forward declarations
class IMemory;
/** Memory group */
class MemoryGroup final : public IMemoryGroup
{
public:
/** Default Constructor */
MemoryGroup(std::shared_ptr<IMemoryManager> = nullptr) noexcept;
/** Default destructor */
~MemoryGroup() = default;
/** Prevent instances of this class from being copied (As this class contains pointers) */
MemoryGroup(const MemoryGroup &) = delete;
/** Prevent instances of this class from being copy assigned (As this class contains pointers) */
MemoryGroup &operator=(const MemoryGroup &) = delete;
/** Allow instances of this class to be moved */
MemoryGroup(MemoryGroup &&) = default;
/** Allow instances of this class to be moved */
MemoryGroup &operator=(MemoryGroup &&) = default;
// Inherited methods overridden:
void manage(IMemoryManageable *obj) override;
void finalize_memory(IMemoryManageable *obj, IMemory &obj_memory, size_t size, size_t alignment) override;
void acquire() override;
void release() override;
MemoryMappings &mappings() override;
private:
std::shared_ptr<IMemoryManager> _memory_manager; /**< Memory manager to be used by the group */
IMemoryPool *_pool; /**< Memory pool that the group is scheduled with */
MemoryMappings _mappings; /**< Memory mappings of the group */
};
inline MemoryGroup::MemoryGroup(std::shared_ptr<IMemoryManager> memory_manager) noexcept
: _memory_manager(memory_manager), _pool(nullptr), _mappings()
{
}
inline void MemoryGroup::manage(IMemoryManageable *obj)
{
if (_memory_manager && (obj != nullptr))
{
ARM_COMPUTE_ERROR_ON(!_memory_manager->lifetime_manager());
// Defer registration to the first managed object
_memory_manager->lifetime_manager()->register_group(this);
// Associate this memory group with the tensor
obj->associate_memory_group(this);
// Start object lifetime
_memory_manager->lifetime_manager()->start_lifetime(obj);
}
}
inline void MemoryGroup::finalize_memory(IMemoryManageable *obj, IMemory &obj_memory, size_t size, size_t alignment)
{
if (_memory_manager)
{
ARM_COMPUTE_ERROR_ON(!_memory_manager->lifetime_manager());
_memory_manager->lifetime_manager()->end_lifetime(obj, obj_memory, size, alignment);
}
}
inline void MemoryGroup::acquire()
{
if (!_mappings.empty())
{
ARM_COMPUTE_ERROR_ON(!_memory_manager->pool_manager());
_pool = _memory_manager->pool_manager()->lock_pool();
_pool->acquire(_mappings);
}
}
inline void MemoryGroup::release()
{
if (_pool != nullptr)
{
ARM_COMPUTE_ERROR_ON(!_memory_manager->pool_manager());
ARM_COMPUTE_ERROR_ON(_mappings.empty());
_pool->release(_mappings);
_memory_manager->pool_manager()->unlock_pool(_pool);
_pool = nullptr;
}
}
inline MemoryMappings &MemoryGroup::mappings()
{
return _mappings;
}
} // namespace arm_compute
#endif /*ARM_COMPUTE_MEMORYGROUP_H */
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