v8 12.4.254 (node 22.4.1)
V8 is Google's open source JavaScript engine
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v8-statistics.h
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1// Copyright 2021 the V8 project authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef INCLUDE_V8_STATISTICS_H_
6#define INCLUDE_V8_STATISTICS_H_
7
8#include <stddef.h>
9#include <stdint.h>
10
11#include <memory>
12#include <utility>
13#include <vector>
14
15#include "v8-local-handle.h" // NOLINT(build/include_directory)
16#include "v8-memory-span.h" // NOLINT(build/include_directory)
17#include "v8-promise.h" // NOLINT(build/include_directory)
18#include "v8config.h" // NOLINT(build/include_directory)
19
20namespace v8 {
21
22class Context;
23class Isolate;
24
25namespace internal {
26class ReadOnlyHeap;
27} // namespace internal
28
35
44
56 public:
57 virtual ~MeasureMemoryDelegate() = default;
58
62 virtual bool ShouldMeasure(Local<Context> context) = 0;
63
65 struct Result {
74
80
83
86 };
87
93 virtual void MeasurementComplete(Result result) {}
94
105 static std::unique_ptr<MeasureMemoryDelegate> Default(
106 Isolate* isolate, Local<Context> context,
107 Local<Promise::Resolver> promise_resolver, MeasureMemoryMode mode);
108};
109
117 public:
119 size_t read_only_space_size() { return read_only_space_size_; }
120 size_t read_only_space_used_size() { return read_only_space_used_size_; }
122 return read_only_space_physical_size_;
123 }
124
125 private:
126 size_t read_only_space_size_;
127 size_t read_only_space_used_size_;
128 size_t read_only_space_physical_size_;
129
130 friend class V8;
131 friend class internal::ReadOnlyHeap;
132};
133
141 public:
143 size_t total_heap_size() { return total_heap_size_; }
144 size_t total_heap_size_executable() { return total_heap_size_executable_; }
145 size_t total_physical_size() { return total_physical_size_; }
146 size_t total_available_size() { return total_available_size_; }
147 size_t total_global_handles_size() { return total_global_handles_size_; }
148 size_t used_global_handles_size() { return used_global_handles_size_; }
149 size_t used_heap_size() { return used_heap_size_; }
150 size_t heap_size_limit() { return heap_size_limit_; }
151 size_t malloced_memory() { return malloced_memory_; }
152 size_t external_memory() { return external_memory_; }
153 size_t peak_malloced_memory() { return peak_malloced_memory_; }
154 size_t number_of_native_contexts() { return number_of_native_contexts_; }
155 size_t number_of_detached_contexts() { return number_of_detached_contexts_; }
156
161 size_t does_zap_garbage() { return does_zap_garbage_; }
162
163 private:
164 size_t total_heap_size_;
165 size_t total_heap_size_executable_;
166 size_t total_physical_size_;
167 size_t total_available_size_;
168 size_t used_heap_size_;
169 size_t heap_size_limit_;
170 size_t malloced_memory_;
171 size_t external_memory_;
172 size_t peak_malloced_memory_;
173 bool does_zap_garbage_;
174 size_t number_of_native_contexts_;
175 size_t number_of_detached_contexts_;
176 size_t total_global_handles_size_;
177 size_t used_global_handles_size_;
178
179 friend class V8;
180 friend class Isolate;
181};
182
184 public:
186 const char* space_name() { return space_name_; }
187 size_t space_size() { return space_size_; }
188 size_t space_used_size() { return space_used_size_; }
189 size_t space_available_size() { return space_available_size_; }
190 size_t physical_space_size() { return physical_space_size_; }
191
192 private:
193 const char* space_name_;
194 size_t space_size_;
195 size_t space_used_size_;
196 size_t space_available_size_;
197 size_t physical_space_size_;
198
199 friend class Isolate;
200};
201
203 public:
205 const char* object_type() { return object_type_; }
206 const char* object_sub_type() { return object_sub_type_; }
207 size_t object_count() { return object_count_; }
208 size_t object_size() { return object_size_; }
209
210 private:
211 const char* object_type_;
212 const char* object_sub_type_;
213 size_t object_count_;
214 size_t object_size_;
215
216 friend class Isolate;
217};
218
220 public:
222 size_t code_and_metadata_size() { return code_and_metadata_size_; }
223 size_t bytecode_and_metadata_size() { return bytecode_and_metadata_size_; }
224 size_t external_script_source_size() { return external_script_source_size_; }
225 size_t cpu_profiler_metadata_size() { return cpu_profiler_metadata_size_; }
226
227 private:
228 size_t code_and_metadata_size_;
229 size_t bytecode_and_metadata_size_;
230 size_t external_script_source_size_;
231 size_t cpu_profiler_metadata_size_;
232
233 friend class Isolate;
234};
235
236} // namespace v8
237
238#endif // INCLUDE_V8_STATISTICS_H_
size_t bytecode_and_metadata_size()
size_t external_script_source_size()
size_t cpu_profiler_metadata_size()
const char * object_sub_type()
const char * space_name()
size_t total_heap_size_executable()
size_t number_of_detached_contexts()
size_t peak_malloced_memory()
size_t number_of_native_contexts()
size_t used_global_handles_size()
size_t total_global_handles_size()
size_t total_available_size()
size_t total_physical_size()
virtual bool ShouldMeasure(Local< Context > context)=0
static std::unique_ptr< MeasureMemoryDelegate > Default(Isolate *isolate, Local< Context > context, Local< Promise::Resolver > promise_resolver, MeasureMemoryMode mode)
virtual ~MeasureMemoryDelegate()=default
virtual void MeasurementComplete(Result result)
MeasureMemoryExecution
MeasureMemoryMode
const MemorySpan< const size_t > & sizes_in_bytes
const MemorySpan< const Local< Context > > & contexts
#define V8_EXPORT
Definition v8config.h:753