Compute Library
 21.02
OffsetMemoryPool.cpp
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1 /*
2  * Copyright (c) 2017-2020 Arm Limited.
3  *
4  * SPDX-License-Identifier: MIT
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24 #include <algorithm>
25 
27 
28 #include "arm_compute/core/Error.h"
33 
34 namespace arm_compute
35 {
37  : _allocator(allocator), _blob(), _blob_info(blob_info)
38 {
39  ARM_COMPUTE_ERROR_ON(!allocator);
40  _blob = _allocator->make_region(blob_info.size, blob_info.alignment);
41 }
42 
44 {
45  return _blob_info;
46 }
47 
49 {
50  ARM_COMPUTE_ERROR_ON(_blob == nullptr);
51 
52  // Set memory to handlers
53  for(auto &handle : handles)
54  {
55  ARM_COMPUTE_ERROR_ON(handle.first == nullptr);
56  handle.first->set_owned_region(_blob->extract_subregion(handle.second, _blob_info.size - handle.second));
57  }
58 }
59 
61 {
62  for(auto &handle : handles)
63  {
64  ARM_COMPUTE_ERROR_ON(handle.first == nullptr);
65  handle.first->set_region(nullptr);
66  }
67 }
68 
70 {
71  return MappingType::OFFSETS;
72 }
73 
74 std::unique_ptr<IMemoryPool> OffsetMemoryPool::duplicate()
75 {
76  ARM_COMPUTE_ERROR_ON(!_allocator);
77  return std::make_unique<OffsetMemoryPool>(_allocator, _blob_info);
78 }
79 } // namespace arm_compute
void acquire(MemoryMappings &handles) override
Sets occupant to the memory pool.
Meta-data information for each blob.
Definition: Types.h:51
std::unique_ptr< IMemoryPool > duplicate() override
Duplicates the existing memory pool.
const BlobInfo & info() const
Accessor to the pool internal configuration meta-data.
#define ARM_COMPUTE_ERROR_ON(cond)
If the condition is true then an error message is printed and an exception thrown.
Definition: Error.h:466
Copyright (c) 2017-2021 Arm Limited.
size_t alignment
Blob alignment.
Definition: Types.h:58
MappingType
Mapping type.
Definition: Types.h:34
input allocator() -> allocate()
void release(MemoryMappings &handles) override
Releases a memory block.
Mappings are in offset granularity in the same blob.
virtual std::unique_ptr< IMemoryRegion > make_region(size_t size, size_t alignment)=0
Create self-managed memory region.
std::map< IMemory *, size_t > MemoryMappings
A map of (handle, index/offset), where handle is the memory handle of the object to provide the memor...
Definition: Types.h:45
Allocator interface.
Definition: IAllocator.h:35
MappingType mapping_type() const override
Returns the mapping types that this pool accepts.
size_t size
Blob size.
Definition: Types.h:57
OffsetMemoryPool(IAllocator *allocator, BlobInfo blob_info)
Default Constructor.