{{ message }}
Repository navigation
Expand file tree
/
Copy pathbase_object-inl.h
More file actions
333 lines (277 loc) · 9.86 KB
/
Copy pathbase_object-inl.h
File metadata and controls
333 lines (277 loc) · 9.86 KB
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
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
// Copyright Joyent, Inc. and other Node contributors.
//
// 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 SRC_BASE_OBJECT_INL_H_
#define SRC_BASE_OBJECT_INL_H_
#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#include "base_object.h"
#include "env-inl.h"
#include "util.h"
#include "v8.h"
namespace node {
BaseObject::BaseObject(Environment* env, v8::Local<v8::Object> object)
: BaseObject(env->principal_realm(), object) {
// TODO(legendecas): Check the shorthand is only used in the principal realm
// while allowing to create a BaseObject in a vm context.
}
void BaseObject::Detach() {
CHECK_GT(pointer_data()->strong_ptr_count, 0);
pointer_data()->is_detached = true;
}
v8::Global<v8::Object>& BaseObject::persistent() {
return persistent_handle_;
}
v8::Local<v8::Object> BaseObject::object() const {
return PersistentToLocal::Default(env()->isolate(), persistent_handle_);
}
v8::Local<v8::Object> BaseObject::object(v8::Isolate* isolate) const {
v8::Local<v8::Object> handle = object();
DCHECK_EQ(env()->isolate(), isolate);
return handle;
}
Environment* BaseObject::env() const {
return realm_->env();
}
Realm* BaseObject::realm() const {
return realm_;
}
bool BaseObject::IsBaseObject(IsolateData* isolate_data,
v8::Local<v8::Object> obj) {
if (obj->InternalFieldCount() < BaseObject::kInternalFieldCount) {
return false;
}
uint16_t* ptr =
static_cast<uint16_t*>(obj->GetAlignedPointerFromInternalField(
BaseObject::kEmbedderType, EmbedderDataTag::kEmbedderType));
return ptr == isolate_data->embedder_id_for_non_cppgc();
}
void BaseObject::TagBaseObject(IsolateData* isolate_data,
v8::Local<v8::Object> object) {
DCHECK_GE(object->InternalFieldCount(), BaseObject::kInternalFieldCount);
object->SetAlignedPointerInInternalField(
BaseObject::kEmbedderType,
isolate_data->embedder_id_for_non_cppgc(),
EmbedderDataTag::kEmbedderType);
}
void BaseObject::SetInternalFields(IsolateData* isolate_data,
v8::Local<v8::Object> object,
void* slot) {
TagBaseObject(isolate_data, object);
object->SetAlignedPointerInInternalField(
BaseObject::kSlot, slot, EmbedderDataTag::kDefault);
}
BaseObject* BaseObject::FromJSObject(v8::Local<v8::Value> value) {
v8::Local<v8::Object> obj = value.As<v8::Object>();
DCHECK_GE(obj->InternalFieldCount(), BaseObject::kInternalFieldCount);
return static_cast<BaseObject*>(obj->GetAlignedPointerFromInternalField(
BaseObject::kSlot, EmbedderDataTag::kDefault));
}
template <typename T>
T* BaseObject::FromJSObject(v8::Local<v8::Value> object) {
return static_cast<T*>(FromJSObject(object));
}
void BaseObject::OnGCCollect() {
delete this;
}
void BaseObject::ClearWeak() {
if (has_pointer_data())
pointer_data()->wants_weak_jsobj = false;
persistent_handle_.ClearWeak();
}
bool BaseObject::IsWeakOrDetached() const {
if (persistent_handle_.IsWeak()) return true;
if (!has_pointer_data()) return false;
const PointerData* pd = const_cast<BaseObject*>(this)->pointer_data();
return pd->wants_weak_jsobj || pd->is_detached;
}
template <int Field>
void BaseObject::InternalFieldGet(
const v8::FunctionCallbackInfo<v8::Value>& args) {
args.GetReturnValue().Set(
args.This()->GetInternalField(Field).As<v8::Value>());
}
template <int Field, bool (v8::Value::*typecheck)() const>
void BaseObject::InternalFieldSet(
const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::Local<v8::Value> value = args[0];
// This could be e.g. value->IsFunction().
CHECK(((*value)->*typecheck)());
args.This()->SetInternalField(Field, value);
}
bool BaseObject::has_pointer_data() const {
return pointer_data_ != nullptr;
}
template <typename T, bool kIsWeak>
BaseObject::PointerData*
BaseObjectPtrImpl<T, kIsWeak>::pointer_data() const {
if constexpr (kIsWeak) {
return data_.pointer_data;
}
if (get_base_object() == nullptr) {
return nullptr;
}
return get_base_object()->pointer_data();
}
template <typename T, bool kIsWeak>
BaseObject* BaseObjectPtrImpl<T, kIsWeak>::get_base_object() const {
if constexpr (kIsWeak) {
if (pointer_data() == nullptr) {
return nullptr;
}
return pointer_data()->self;
}
return data_.target;
}
template <typename T, bool kIsWeak>
BaseObjectPtrImpl<T, kIsWeak>::~BaseObjectPtrImpl() {
if constexpr (kIsWeak) {
if (pointer_data() != nullptr &&
--pointer_data()->weak_ptr_count == 0 &&
pointer_data()->self == nullptr) {
delete pointer_data();
}
} else if (get() != nullptr) {
get()->decrease_refcount();
}
}
template <typename T, bool kIsWeak>
BaseObjectPtrImpl<T, kIsWeak>::BaseObjectPtrImpl() {
data_.target = nullptr;
}
template <typename T, bool kIsWeak>
BaseObjectPtrImpl<T, kIsWeak>::BaseObjectPtrImpl(T* target)
: BaseObjectPtrImpl() {
if (target == nullptr) return;
if constexpr (kIsWeak) {
data_.pointer_data = target->pointer_data();
CHECK_NOT_NULL(pointer_data());
pointer_data()->weak_ptr_count++;
} else {
data_.target = target;
CHECK_NOT_NULL(pointer_data());
get()->increase_refcount();
}
}
template <typename T, bool kIsWeak>
template <typename U, bool kW>
BaseObjectPtrImpl<T, kIsWeak>::BaseObjectPtrImpl(
const BaseObjectPtrImpl<U, kW>& other)
: BaseObjectPtrImpl(other.get()) {}
template <typename T, bool kIsWeak>
BaseObjectPtrImpl<T, kIsWeak>::BaseObjectPtrImpl(const BaseObjectPtrImpl& other)
: BaseObjectPtrImpl(other.get()) {}
template <typename T, bool kIsWeak>
template <typename U, bool kW>
BaseObjectPtrImpl<T, kIsWeak>& BaseObjectPtrImpl<T, kIsWeak>::operator=(
const BaseObjectPtrImpl<U, kW>& other) {
if (other.get() == get()) return *this;
this->~BaseObjectPtrImpl();
return *new (this) BaseObjectPtrImpl(other);
}
template <typename T, bool kIsWeak>
BaseObjectPtrImpl<T, kIsWeak>& BaseObjectPtrImpl<T, kIsWeak>::operator=(
const BaseObjectPtrImpl& other) {
if (other.get() == get()) return *this;
this->~BaseObjectPtrImpl();
return *new (this) BaseObjectPtrImpl(other);
}
template <typename T, bool kIsWeak>
BaseObjectPtrImpl<T, kIsWeak>::BaseObjectPtrImpl(BaseObjectPtrImpl&& other)
: data_(other.data_) {
if constexpr (kIsWeak)
other.data_.target = nullptr;
else
other.data_.pointer_data = nullptr;
}
template <typename T, bool kIsWeak>
BaseObjectPtrImpl<T, kIsWeak>& BaseObjectPtrImpl<T, kIsWeak>::operator=(
BaseObjectPtrImpl&& other) {
if (&other == this) return *this;
this->~BaseObjectPtrImpl();
return *new (this) BaseObjectPtrImpl(std::move(other));
}
template <typename T, bool kIsWeak>
BaseObjectPtrImpl<T, kIsWeak>::BaseObjectPtrImpl(std::nullptr_t)
: BaseObjectPtrImpl() {}
template <typename T, bool kIsWeak>
BaseObjectPtrImpl<T, kIsWeak>& BaseObjectPtrImpl<T, kIsWeak>::operator=(
std::nullptr_t) {
this->~BaseObjectPtrImpl();
return *new (this) BaseObjectPtrImpl();
}
template <typename T, bool kIsWeak>
void BaseObjectPtrImpl<T, kIsWeak>::reset(T* ptr) {
*this = BaseObjectPtrImpl(ptr);
}
template <typename T, bool kIsWeak>
T* BaseObjectPtrImpl<T, kIsWeak>::get() const {
return static_cast<T*>(get_base_object());
}
template <typename T, bool kIsWeak>
T& BaseObjectPtrImpl<T, kIsWeak>::operator*() const {
return *get();
}
template <typename T, bool kIsWeak>
T* BaseObjectPtrImpl<T, kIsWeak>::operator->() const {
return get();
}
template <typename T, bool kIsWeak>
BaseObjectPtrImpl<T, kIsWeak>::operator bool() const {
return get() != nullptr;
}
template <typename T, bool kIsWeak>
template <typename U, bool kW>
bool BaseObjectPtrImpl<T, kIsWeak>::operator ==(
const BaseObjectPtrImpl<U, kW>& other) const {
return get() == other.get();
}
template <typename T, bool kIsWeak>
template <typename U, bool kW>
bool BaseObjectPtrImpl<T, kIsWeak>::operator !=(
const BaseObjectPtrImpl<U, kW>& other) const {
return get() != other.get();
}
template <typename T, bool kIsWeak>
bool operator==(const BaseObjectPtrImpl<T, kIsWeak> ptr, const std::nullptr_t) {
return ptr.get() == nullptr;
}
template <typename T, bool kIsWeak>
bool operator==(const std::nullptr_t, const BaseObjectPtrImpl<T, kIsWeak> ptr) {
return ptr.get() == nullptr;
}
template <typename T, typename... Args>
BaseObjectPtr<T> MakeBaseObject(Args&&... args) {
return BaseObjectPtr<T>(new T(std::forward<Args>(args)...));
}
template <typename T, typename... Args>
BaseObjectWeakPtr<T> MakeWeakBaseObject(Args&&... args) {
T* target = new T(std::forward<Args>(args)...);
target->MakeWeak();
return BaseObjectWeakPtr<T>(target);
}
template <typename T, typename... Args>
BaseObjectPtr<T> MakeDetachedBaseObject(Args&&... args) {
BaseObjectPtr<T> target = MakeBaseObject<T>(std::forward<Args>(args)...);
target->Detach();
return target;
}
} // namespace node
#endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#endif // SRC_BASE_OBJECT_INL_H_
You can’t perform that action at this time.