/
container.h
220 lines (199 loc) · 6.27 KB
/
container.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 to 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.
*/
/*!
* \file tvm/runtime/container.h
* \brief Common POD(plain old data) container types.
*/
#ifndef TVM_RUNTIME_CONTAINER_H_
#define TVM_RUNTIME_CONTAINER_H_
#include <tvm/runtime/object.h>
#include <initializer_list>
#include <type_traits>
#include <vector>
namespace tvm {
namespace runtime {
/**
* @brief Base template for classes with array like memory layout.
*
* It provides general methods to access the memory. The memory
* layout is ArrayType + [ElemType]. The alignment of ArrayType
* and ElemType is handled by the memory allocator.
*
* @tparam ArrayType
* @tparam ElemType
*/
template <typename ArrayType, typename ElemType>
class InplaceArrayBase {
public:
/**
* @brief Initialize the elements in the array.
*/
void Init() {
CHECK_EQ(sizeof(ArrayType) % alignof(ElemType), 0);
for (size_t i = 0; i < Self()->size(); ++i) {
void* field_ptr = AddressOf(i);
new (field_ptr) ElemType();
}
}
/**
* @brief Initialize the elements in the array.
*
* @tparam Iterator Iterator type of the array.
* @param begin The begin iterator.
* @param end The end iterator.
*/
template <typename Iterator>
void Init(Iterator begin, Iterator end) {
CHECK_EQ(sizeof(ArrayType) % alignof(ElemType), 0);
ArrayType* self = Self();
size_t num_elems = std::distance(begin, end);
if (num_elems != self->size()) {
LOG(FATAL)
<< "Number of initializer values does not match number of elements\n";
}
auto it = begin;
for (size_t i = 0; i < num_elems; ++i) {
void* field_ptr = AddressOf(i);
new (field_ptr) ElemType(*it);
++it;
}
}
/**
* @brief Initialize the elements in the array.
*
* @param init The initializer list of elements.
*/
void Init(std::initializer_list<ElemType> init) {
CHECK_EQ(sizeof(ArrayType) % alignof(ElemType), 0);
Init(init.begin(), init.end());
}
/*!
* \brief Access element at index
* \param idx The index of the element.
* \return Reference to ElemType at the index.
*/
ElemType& operator[](size_t idx) const {
size_t size = Self()->size();
if (idx > size) {
LOG(FATAL) << "Index " << idx << " out of bounds " << size << "\n";
}
return *(reinterpret_cast<ElemType*>(AddressOf(idx)));
}
/**
* @brief Destroy the Inplace Array Base object
*/
virtual ~InplaceArrayBase() {
if (!IsPOD()) {
size_t size = Self()->size();
for (size_t i = 0; i < size; ++i) {
ElemType* fp = reinterpret_cast<ElemType*>(AddressOf(i));
fp->ElemType::~ElemType();
}
}
}
private:
/**
* @brief Check if the ElemType is Plain Old Data.
*
* @return If ElemType is POD.
*/
inline bool IsPOD() const {
return std::is_standard_layout<ElemType>::value &&
std::is_trivial<ElemType>::value;
}
/**
* @brief Return the self object for the array.
*
* @return Pointer to ArrayType.
*/
inline ArrayType* Self() const {
return static_cast<ArrayType*>(const_cast<InplaceArrayBase*>(this));
}
/**
* @brief Return the raw pointer to the element at idx.
*
* @param idx The index of the element.
* @return Raw pointer to the element.
*/
void* AddressOf(size_t idx) const {
const size_t kDataStart = sizeof(ArrayType);
ArrayType* self = Self();
char* data_start = reinterpret_cast<char*>(self) + kDataStart;
return data_start + idx * sizeof(ElemType);
}
};
/*! \brief An object representing a structure or enumeration. */
class ADTObj : public Object, public InplaceArrayBase<ADTObj, ObjectRef> {
public:
/*! \brief The tag representing the constructor used. */
uint32_t tag_;
/*! \brief Number of fields in the ADT object. */
uint32_t size_;
// The fields of the structure follows directly in memory.
/**
* @brief The number of elements in the array.
*/
inline size_t size() const { return size_; }
/**
* @brief Destroy the ADTObj object
*/
~ADTObj() {}
static constexpr const uint32_t _type_index = TypeIndex::kVMADT;
static constexpr const char* _type_key = "vm.ADT";
TVM_DECLARE_FINAL_OBJECT_INFO(ADTObj, Object);
};
/*! \brief reference to algebraic data type objects. */
class ADT : public ObjectRef {
public:
/*!
* \brief construct an ADT object reference.
* \param tag The tag of the ADT object.
* \param fields The fields of the ADT object.
* \return The constructed ADT object reference.
*/
ADT(uint32_t tag, std::vector<ObjectRef> fields)
: ADT(tag, fields.begin(), fields.end()){};
/**
* \brief construct an ADT object reference.
* \param tag The tag of the ADT object.
* \param begin The begin iterator to the start of the fields array.
* \param end The end iterator to the end of the fields array.
* \return The constructed ADT object reference.
*/
template <typename Iterator>
ADT(uint32_t tag, Iterator begin, Iterator end);
/**
* \brief construct an ADT object reference.
* \param tag The tag of the ADT object.
* \param init The initializer list of fields.
* \return The constructed ADT object reference.
*/
ADT(uint32_t tag, std::initializer_list<ObjectRef> init)
: ADT(tag, init.begin(), init.end()){};
/*!
* \brief construct a tuple object.
* \param fields The fields of the tuple.
* \return The constructed tuple type.
*/
static ADT Tuple(std::vector<ObjectRef> fields);
TVM_DEFINE_OBJECT_REF_METHODS(ADT, ObjectRef, ADTObj);
};
} // namespace runtime
} // namespace tvm
#endif // TVM_RUNTIME_CONTAINER_H_