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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.
*/
#include "arm_compute/runtime/ISimpleLifetimeManager.h"
#include "arm_compute/core/Error.h"
#include "arm_compute/runtime/IAllocator.h"
#include "arm_compute/runtime/IMemory.h"
#include "arm_compute/runtime/IMemoryGroup.h"
#include "arm_compute/runtime/IMemoryPool.h"
#include <algorithm>
#include <cmath>
#include <map>
#include <vector>
namespace arm_compute
{
ISimpleLifetimeManager::ISimpleLifetimeManager()
: _active_group(nullptr), _active_elements(), _free_blobs(), _occupied_blobs(), _finalized_groups()
{
}
void ISimpleLifetimeManager::register_group(IMemoryGroup *group)
{
if(_active_group == nullptr)
{
ARM_COMPUTE_ERROR_ON(group == nullptr);
_active_group = group;
}
}
bool ISimpleLifetimeManager::release_group(IMemoryGroup *group)
{
if(group == nullptr)
{
return false;
}
const bool status = bool(_finalized_groups.erase(group));
if(status)
{
group->mappings().clear();
}
return status;
}
void ISimpleLifetimeManager::start_lifetime(void *obj)
{
ARM_COMPUTE_ERROR_ON(obj == nullptr);
ARM_COMPUTE_ERROR_ON_MSG(_active_elements.find(obj) != std::end(_active_elements), "Memory object is already registered!");
// Check if there is a free blob
if(_free_blobs.empty())
{
_occupied_blobs.emplace_front(Blob{ obj, 0, 0, { obj } });
}
else
{
_occupied_blobs.splice(std::begin(_occupied_blobs), _free_blobs, std::begin(_free_blobs));
_occupied_blobs.front().id = obj;
}
// Insert object in groups and mark its finalized state to false
_active_elements.insert(std::make_pair(obj, obj));
}
void ISimpleLifetimeManager::end_lifetime(void *obj, IMemory &obj_memory, size_t size, size_t alignment)
{
ARM_COMPUTE_ERROR_ON(obj == nullptr);
// Find object
auto active_object_it = _active_elements.find(obj);
ARM_COMPUTE_ERROR_ON(active_object_it == std::end(_active_elements));
// Update object fields and mark object as complete
Element &el = active_object_it->second;
el.handle = &obj_memory;
el.size = size;
el.alignment = alignment;
el.status = true;
// Find object in the occupied lists
auto occupied_blob_it = std::find_if(std::begin(_occupied_blobs), std::end(_occupied_blobs), [&obj](const Blob & b)
{
return obj == b.id;
});
ARM_COMPUTE_ERROR_ON(occupied_blob_it == std::end(_occupied_blobs));
// Update occupied blob and return as free
occupied_blob_it->bound_elements.insert(obj);
occupied_blob_it->max_size = std::max(occupied_blob_it->max_size, size);
occupied_blob_it->max_alignment = std::max(occupied_blob_it->max_alignment, alignment);
occupied_blob_it->id = nullptr;
_free_blobs.splice(std::begin(_free_blobs), _occupied_blobs, occupied_blob_it);
// Check if all objects are finalized and reset active group
if(are_all_finalized())
{
ARM_COMPUTE_ERROR_ON(!_occupied_blobs.empty());
// Update blobs and group mappings
update_blobs_and_mappings();
// Update finalized groups
_finalized_groups[_active_group].insert(std::begin(_active_elements), std::end(_active_elements));
// Reset state
_active_elements.clear();
_active_group = nullptr;
_free_blobs.clear();
}
}
bool ISimpleLifetimeManager::are_all_finalized() const
{
return !std::any_of(std::begin(_active_elements), std::end(_active_elements), [](const std::pair<void *, Element> &e)
{
return !e.second.status;
});
}
} // namespace arm_compute
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