Compute Library
 21.02
ISimpleLifetimeManager.cpp
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1 /*
2  * Copyright (c) 2017-2020 Arm Limited.
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25 
26 #include "arm_compute/core/Error.h"
31 
32 #include <algorithm>
33 #include <cmath>
34 #include <map>
35 #include <vector>
36 
37 namespace arm_compute
38 {
40  : _active_group(nullptr), _active_elements(), _free_blobs(), _occupied_blobs(), _finalized_groups()
41 {
42 }
43 
45 {
46  if(_active_group == nullptr)
47  {
48  ARM_COMPUTE_ERROR_ON(group == nullptr);
49  _active_group = group;
50  }
51 }
52 
54 {
55  if(group == nullptr)
56  {
57  return false;
58  }
59  const bool status = bool(_finalized_groups.erase(group));
60  if(status)
61  {
62  group->mappings().clear();
63  }
64  return status;
65 }
66 
68 {
69  ARM_COMPUTE_ERROR_ON(obj == nullptr);
70  ARM_COMPUTE_ERROR_ON_MSG(_active_elements.find(obj) != std::end(_active_elements), "Memory object is already registered!");
71 
72  // Check if there is a free blob
73  if(_free_blobs.empty())
74  {
75  _occupied_blobs.emplace_front(Blob{ obj, 0, 0, { obj } });
76  }
77  else
78  {
79  _occupied_blobs.splice(std::begin(_occupied_blobs), _free_blobs, std::begin(_free_blobs));
80  _occupied_blobs.front().id = obj;
81  }
82 
83  // Insert object in groups and mark its finalized state to false
84  _active_elements.insert(std::make_pair(obj, obj));
85 }
86 
87 void ISimpleLifetimeManager::end_lifetime(void *obj, IMemory &obj_memory, size_t size, size_t alignment)
88 {
89  ARM_COMPUTE_ERROR_ON(obj == nullptr);
90 
91  // Find object
92  auto active_object_it = _active_elements.find(obj);
93  ARM_COMPUTE_ERROR_ON(active_object_it == std::end(_active_elements));
94 
95  // Update object fields and mark object as complete
96  Element &el = active_object_it->second;
97  el.handle = &obj_memory;
98  el.size = size;
99  el.alignment = alignment;
100  el.status = true;
101 
102  // Find object in the occupied lists
103  auto occupied_blob_it = std::find_if(std::begin(_occupied_blobs), std::end(_occupied_blobs), [&obj](const Blob & b)
104  {
105  return obj == b.id;
106  });
107  ARM_COMPUTE_ERROR_ON(occupied_blob_it == std::end(_occupied_blobs));
108 
109  // Update occupied blob and return as free
110  occupied_blob_it->bound_elements.insert(obj);
111  occupied_blob_it->max_size = std::max(occupied_blob_it->max_size, size);
112  occupied_blob_it->max_alignment = std::max(occupied_blob_it->max_alignment, alignment);
113  occupied_blob_it->id = nullptr;
114  _free_blobs.splice(std::begin(_free_blobs), _occupied_blobs, occupied_blob_it);
115 
116  // Check if all objects are finalized and reset active group
117  if(are_all_finalized())
118  {
119  ARM_COMPUTE_ERROR_ON(!_occupied_blobs.empty());
120 
121  // Update blobs and group mappings
122  update_blobs_and_mappings();
123 
124  // Update finalized groups
125  _finalized_groups[_active_group].insert(std::begin(_active_elements), std::end(_active_elements));
126 
127  // Reset state
128  _active_elements.clear();
129  _active_group = nullptr;
130  _free_blobs.clear();
131  }
132 }
133 
135 {
136  return !std::any_of(std::begin(_active_elements), std::end(_active_elements), [](const std::pair<void *, Element> &e)
137  {
138  return !e.second.status;
139  });
140 }
141 } // namespace arm_compute
Memory group interface.
Definition: IMemoryGroup.h:37
void register_group(IMemoryGroup *group) override
Registers a group to the lifetime manager and assigns a group id.
Memory interface.
Definition: IMemory.h:32
SimpleTensor< float > b
Definition: DFT.cpp:157
bool are_all_finalized() const override
Checks if the lifetime of the registered object is complete.
#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.
bool release_group(IMemoryGroup *group) override
Unbound and release elements associated with a group.
#define ARM_COMPUTE_ERROR_ON_MSG(cond, msg)
Definition: Error.h:456
virtual MemoryMappings & mappings()=0
Gets the memory mapping of the group.
void end(TokenStream &in, bool &valid)
Definition: MLGOParser.cpp:290
void start_lifetime(void *obj) override
Registers and starts lifetime of an object.
void end_lifetime(void *obj, IMemory &obj_memory, size_t size, size_t alignment) override
Ends lifetime of an object.