Repository navigation
Expand file tree
/
Copy pathenv.h
More file actions
1234 lines (1008 loc) · 43.1 KB
/
Copy pathenv.h
File metadata and controls
1234 lines (1008 loc) · 43.1 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
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
// 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_ENV_H_
#define SRC_ENV_H_
#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#include "aliased_buffer.h"
#if HAVE_INSPECTOR
#include "inspector_agent.h"
#include "inspector_profiler.h"
#endif
#include "callback_queue.h"
#include "cleanup_queue-inl.h"
#include "compile_cache.h"
#include "debug_utils.h"
#include "env_properties.h"
#include "handle_wrap.h"
#include "node.h"
#include "node_binding.h"
#include "node_builtins.h"
#include "node_exit_code.h"
#include "node_main_instance.h"
#include "node_options.h"
#include "node_perf_common.h"
#include "node_realm.h"
#include "node_snapshotable.h"
#include "permission/permission.h"
#include "req_wrap.h"
#include "util.h"
#include "uv.h"
#include "v8.h"
#if HAVE_OPENSSL
#include <openssl/evp.h>
#endif
#include <array>
#include <atomic>
#include <cstdint>
#include <functional>
#include <list>
#include <memory>
#include <ostream>
#include <set>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <vector>
namespace v8 {
class CppHeap;
}
namespace node {
namespace shadow_realm {
class ShadowRealm;
}
namespace contextify {
class ContextifyScript;
class CompiledFnEntry;
}
namespace performance {
class PerformanceState;
}
namespace tracing {
class AgentWriterHandle;
}
#if HAVE_INSPECTOR
namespace profiler {
class V8CoverageConnection;
class V8CpuProfilerConnection;
class V8HeapProfilerConnection;
} // namespace profiler
namespace inspector {
class ParentInspectorHandle;
}
#endif // HAVE_INSPECTOR
namespace worker {
class Worker;
}
namespace loader {
class ModuleWrap;
} // namespace loader
class Environment;
class Realm;
// Disables zero-filling for ArrayBuffer allocations in this scope. This is
// similar to how we implement Buffer.allocUnsafe() in JS land.
class NoArrayBufferZeroFillScope {
public:
inline explicit NoArrayBufferZeroFillScope(IsolateData* isolate_data);
inline ~NoArrayBufferZeroFillScope();
private:
NodeArrayBufferAllocator* node_allocator_;
friend class Environment;
};
struct IsolateDataSerializeInfo {
std::vector<SnapshotIndex> primitive_values;
std::vector<PropInfo> template_values;
friend std::ostream& operator<<(std::ostream& o,
const IsolateDataSerializeInfo& i);
};
struct PerIsolateWrapperData {
uint16_t cppgc_id;
uint16_t non_cppgc_id;
};
class NODE_EXTERN_PRIVATE IsolateData : public MemoryRetainer {
public:
IsolateData(v8::Isolate* isolate,
uv_loop_t* event_loop,
MultiIsolatePlatform* platform = nullptr,
ArrayBufferAllocator* node_allocator = nullptr,
const SnapshotData* snapshot_data = nullptr);
~IsolateData();
SET_MEMORY_INFO_NAME(IsolateData)
SET_SELF_SIZE(IsolateData)
void MemoryInfo(MemoryTracker* tracker) const override;
IsolateDataSerializeInfo Serialize(v8::SnapshotCreator* creator);
bool is_building_snapshot() const { return snapshot_config_.has_value(); }
const SnapshotConfig* snapshot_config() const {
return snapshot_config_.has_value() ? &(snapshot_config_.value()) : nullptr;
}
void set_snapshot_config(const SnapshotConfig* config) {
if (config != nullptr) {
snapshot_config_ = *config; // Copy the config.
}
}
uint16_t* embedder_id_for_cppgc() const;
uint16_t* embedder_id_for_non_cppgc() const;
static inline void SetCppgcReference(v8::Isolate* isolate,
v8::Local<v8::Object> object,
void* wrappable);
inline uv_loop_t* event_loop() const;
inline MultiIsolatePlatform* platform() const;
inline const SnapshotData* snapshot_data() const;
inline std::shared_ptr<PerIsolateOptions> options();
inline void set_options(std::shared_ptr<PerIsolateOptions> options);
inline NodeArrayBufferAllocator* node_allocator() const;
inline worker::Worker* worker_context() const;
inline void set_worker_context(worker::Worker* context);
#define VP(PropertyName, StringValue) V(v8::Private, PropertyName)
#define VY(PropertyName, StringValue) V(v8::Symbol, PropertyName)
#define VS(PropertyName, StringValue) V(v8::String, PropertyName)
#define VR(PropertyName, TypeName) V(v8::Private, per_realm_##PropertyName)
#define V(TypeName, PropertyName) \
inline v8::Local<TypeName> PropertyName() const;
PER_ISOLATE_PRIVATE_SYMBOL_PROPERTIES(VP)
PER_ISOLATE_SYMBOL_PROPERTIES(VY)
PER_ISOLATE_STRING_PROPERTIES(VS)
PER_REALM_STRONG_PERSISTENT_VALUES(VR)
#undef V
#undef VR
#undef VY
#undef VS
#undef VP
#define VM(PropertyName) V(PropertyName##_binding_template, v8::ObjectTemplate)
#define V(PropertyName, TypeName) \
inline v8::Local<TypeName> PropertyName() const; \
inline void set_##PropertyName(v8::Local<TypeName> value);
PER_ISOLATE_TEMPLATE_PROPERTIES(V)
NODE_BINDINGS_WITH_PER_ISOLATE_INIT(VM)
#undef V
#undef VM
inline v8::Local<v8::String> async_wrap_provider(int index) const;
size_t max_young_gen_size = 1;
std::unordered_map<const char*, v8::Eternal<v8::String>> static_str_map;
inline v8::Isolate* isolate() const;
IsolateData(const IsolateData&) = delete;
IsolateData& operator=(const IsolateData&) = delete;
IsolateData(IsolateData&&) = delete;
IsolateData& operator=(IsolateData&&) = delete;
private:
void DeserializeProperties(const IsolateDataSerializeInfo* isolate_data_info);
void CreateProperties();
#define VP(PropertyName, StringValue) V(v8::Private, PropertyName)
#define VY(PropertyName, StringValue) V(v8::Symbol, PropertyName)
#define VS(PropertyName, StringValue) V(v8::String, PropertyName)
#define VR(PropertyName, TypeName) V(v8::Private, per_realm_##PropertyName)
#define VM(PropertyName) V(v8::ObjectTemplate, PropertyName##_binding_template)
#define VT(PropertyName, TypeName) V(TypeName, PropertyName)
#define V(TypeName, PropertyName) \
v8::Eternal<TypeName> PropertyName ## _;
PER_ISOLATE_PRIVATE_SYMBOL_PROPERTIES(VP)
PER_ISOLATE_SYMBOL_PROPERTIES(VY)
PER_ISOLATE_STRING_PROPERTIES(VS)
PER_ISOLATE_TEMPLATE_PROPERTIES(VT)
PER_REALM_STRONG_PERSISTENT_VALUES(VR)
NODE_BINDINGS_WITH_PER_ISOLATE_INIT(VM)
#undef V
#undef VM
#undef VR
#undef VT
#undef VS
#undef VY
#undef VP
// Keep a list of all Persistent strings used for AsyncWrap Provider types.
std::array<v8::Eternal<v8::String>, AsyncWrap::PROVIDERS_LENGTH>
async_wrap_providers_;
v8::Isolate* const isolate_;
uv_loop_t* const event_loop_;
NodeArrayBufferAllocator* const node_allocator_;
MultiIsolatePlatform* platform_;
const SnapshotData* snapshot_data_;
std::optional<SnapshotConfig> snapshot_config_;
std::unique_ptr<v8::CppHeap> cpp_heap_;
std::shared_ptr<PerIsolateOptions> options_;
worker::Worker* worker_context_ = nullptr;
PerIsolateWrapperData* wrapper_data_;
static Mutex isolate_data_mutex_;
static std::unordered_map<uint16_t, std::unique_ptr<PerIsolateWrapperData>>
wrapper_data_map_;
};
struct ContextInfo {
explicit ContextInfo(const std::string& name) : name(name) {}
const std::string name;
std::string origin;
bool is_default = false;
};
class EnabledDebugList;
namespace per_process {
extern std::shared_ptr<KVStore> system_environment;
}
struct EnvSerializeInfo;
class AsyncHooks : public MemoryRetainer {
public:
SET_MEMORY_INFO_NAME(AsyncHooks)
SET_SELF_SIZE(AsyncHooks)
void MemoryInfo(MemoryTracker* tracker) const override;
// Reason for both UidFields and Fields are that one is stored as a double*
// and the other as a uint32_t*.
enum Fields {
kInit,
kBefore,
kAfter,
kDestroy,
kPromiseResolve,
kTotals,
kCheck,
kStackLength,
kUsesExecutionAsyncResource,
kFieldsCount,
};
enum UidFields {
kExecutionAsyncId,
kTriggerAsyncId,
kAsyncIdCounter,
kDefaultTriggerAsyncId,
kUidFieldsCount,
};
inline AliasedUint32Array& fields();
inline AliasedFloat64Array& async_id_fields();
inline AliasedFloat64Array& async_ids_stack();
inline v8::Local<v8::Array> js_execution_async_resources();
// Returns the native executionAsyncResource value at stack index `index`.
// Resources provided on the JS side are not stored on the native stack,
// in which case an empty `Local<>` is returned.
// The `js_execution_async_resources` array contains the value in that case.
inline v8::Local<v8::Object> native_execution_async_resource(size_t index);
void InstallPromiseHooks(v8::Local<v8::Context> ctx);
void ResetPromiseHooks(v8::Local<v8::Function> init,
v8::Local<v8::Function> before,
v8::Local<v8::Function> after,
v8::Local<v8::Function> resolve);
inline v8::Local<v8::String> provider_string(int idx);
inline void no_force_checks();
inline Environment* env();
// NB: This call does not take (co-)ownership of `execution_async_resource`.
// The lifetime of the `v8::Local<>` pointee must last until
// `pop_async_context()` or `clear_async_id_stack()` are called.
void push_async_context(double async_id,
double trigger_async_id,
v8::Local<v8::Object> execution_async_resource);
bool pop_async_context(double async_id);
void clear_async_id_stack(); // Used in fatal exceptions.
AsyncHooks(const AsyncHooks&) = delete;
AsyncHooks& operator=(const AsyncHooks&) = delete;
AsyncHooks(AsyncHooks&&) = delete;
AsyncHooks& operator=(AsyncHooks&&) = delete;
~AsyncHooks() = default;
// Used to set the kDefaultTriggerAsyncId in a scope. This is instead of
// passing the trigger_async_id along with other constructor arguments.
class DefaultTriggerAsyncIdScope {
public:
DefaultTriggerAsyncIdScope() = delete;
explicit DefaultTriggerAsyncIdScope(Environment* env,
double init_trigger_async_id);
explicit DefaultTriggerAsyncIdScope(AsyncWrap* async_wrap);
~DefaultTriggerAsyncIdScope();
DefaultTriggerAsyncIdScope(const DefaultTriggerAsyncIdScope&) = delete;
DefaultTriggerAsyncIdScope& operator=(const DefaultTriggerAsyncIdScope&) =
delete;
DefaultTriggerAsyncIdScope(DefaultTriggerAsyncIdScope&&) = delete;
DefaultTriggerAsyncIdScope& operator=(DefaultTriggerAsyncIdScope&&) =
delete;
private:
AsyncHooks* async_hooks_;
double old_default_trigger_async_id_;
};
struct SerializeInfo {
AliasedBufferIndex async_ids_stack;
AliasedBufferIndex fields;
AliasedBufferIndex async_id_fields;
SnapshotIndex js_execution_async_resources;
std::vector<SnapshotIndex> native_execution_async_resources;
};
SerializeInfo Serialize(v8::Local<v8::Context> context,
v8::SnapshotCreator* creator);
void Deserialize(v8::Local<v8::Context> context);
private:
friend class Environment; // So we can call the constructor.
explicit AsyncHooks(v8::Isolate* isolate, const SerializeInfo* info);
[[noreturn]] void FailWithCorruptedAsyncStack(double expected_async_id);
// Stores the ids of the current execution context stack.
AliasedFloat64Array async_ids_stack_;
// Attached to a Uint32Array that tracks the number of active hooks for
// each type.
AliasedUint32Array fields_;
// Attached to a Float64Array that tracks the state of async resources.
AliasedFloat64Array async_id_fields_;
void grow_async_ids_stack();
v8::Global<v8::Array> js_execution_async_resources_;
std::vector<v8::Local<v8::Object>> native_execution_async_resources_;
// Non-empty during deserialization
const SerializeInfo* info_ = nullptr;
std::array<v8::Global<v8::Function>, 4> js_promise_hooks_;
};
class ImmediateInfo : public MemoryRetainer {
public:
inline AliasedUint32Array& fields();
inline uint32_t count() const;
inline uint32_t ref_count() const;
inline bool has_outstanding() const;
inline void ref_count_inc(uint32_t increment);
inline void ref_count_dec(uint32_t decrement);
ImmediateInfo(const ImmediateInfo&) = delete;
ImmediateInfo& operator=(const ImmediateInfo&) = delete;
ImmediateInfo(ImmediateInfo&&) = delete;
ImmediateInfo& operator=(ImmediateInfo&&) = delete;
~ImmediateInfo() = default;
SET_MEMORY_INFO_NAME(ImmediateInfo)
SET_SELF_SIZE(ImmediateInfo)
void MemoryInfo(MemoryTracker* tracker) const override;
struct SerializeInfo {
AliasedBufferIndex fields;
};
SerializeInfo Serialize(v8::Local<v8::Context> context,
v8::SnapshotCreator* creator);
void Deserialize(v8::Local<v8::Context> context);
private:
friend class Environment; // So we can call the constructor.
explicit ImmediateInfo(v8::Isolate* isolate, const SerializeInfo* info);
enum Fields { kCount, kRefCount, kHasOutstanding, kFieldsCount };
AliasedUint32Array fields_;
};
class TickInfo : public MemoryRetainer {
public:
inline AliasedUint8Array& fields();
inline bool has_tick_scheduled() const;
inline bool has_rejection_to_warn() const;
SET_MEMORY_INFO_NAME(TickInfo)
SET_SELF_SIZE(TickInfo)
void MemoryInfo(MemoryTracker* tracker) const override;
TickInfo(const TickInfo&) = delete;
TickInfo& operator=(const TickInfo&) = delete;
TickInfo(TickInfo&&) = delete;
TickInfo& operator=(TickInfo&&) = delete;
~TickInfo() = default;
struct SerializeInfo {
AliasedBufferIndex fields;
};
SerializeInfo Serialize(v8::Local<v8::Context> context,
v8::SnapshotCreator* creator);
void Deserialize(v8::Local<v8::Context> context);
private:
friend class Environment; // So we can call the constructor.
explicit TickInfo(v8::Isolate* isolate, const SerializeInfo* info);
enum Fields { kHasTickScheduled = 0, kHasRejectionToWarn, kFieldsCount };
AliasedUint8Array fields_;
};
class TrackingTraceStateObserver :
public v8::TracingController::TraceStateObserver {
public:
explicit TrackingTraceStateObserver(Environment* env) : env_(env) {}
void OnTraceEnabled() override {
UpdateTraceCategoryState();
}
void OnTraceDisabled() override {
UpdateTraceCategoryState();
}
private:
void UpdateTraceCategoryState();
Environment* env_;
};
class ShouldNotAbortOnUncaughtScope {
public:
explicit inline ShouldNotAbortOnUncaughtScope(Environment* env);
inline void Close();
inline ~ShouldNotAbortOnUncaughtScope();
ShouldNotAbortOnUncaughtScope(const ShouldNotAbortOnUncaughtScope&) = delete;
ShouldNotAbortOnUncaughtScope& operator=(
const ShouldNotAbortOnUncaughtScope&) = delete;
ShouldNotAbortOnUncaughtScope(ShouldNotAbortOnUncaughtScope&&) = delete;
ShouldNotAbortOnUncaughtScope& operator=(ShouldNotAbortOnUncaughtScope&&) =
delete;
private:
Environment* env_;
};
typedef void (*DeserializeRequestCallback)(v8::Local<v8::Context> context,
v8::Local<v8::Object> holder,
int index,
InternalFieldInfoBase* info);
struct DeserializeRequest {
DeserializeRequestCallback cb;
v8::Global<v8::Object> holder;
int index;
InternalFieldInfoBase* info = nullptr; // Owned by the request
};
struct EnvSerializeInfo {
AsyncHooks::SerializeInfo async_hooks;
TickInfo::SerializeInfo tick_info;
ImmediateInfo::SerializeInfo immediate_info;
AliasedBufferIndex timeout_info;
performance::PerformanceState::SerializeInfo performance_state;
AliasedBufferIndex exit_info;
AliasedBufferIndex stream_base_state;
AliasedBufferIndex should_abort_on_uncaught_toggle;
RealmSerializeInfo principal_realm;
friend std::ostream& operator<<(std::ostream& o, const EnvSerializeInfo& i);
};
struct SnapshotMetadata {
// For now kFullyCustomized is only built with the --build-snapshot CLI flag.
// We might want to add more types of snapshots in the future.
enum class Type : uint8_t { kDefault, kFullyCustomized };
Type type;
std::string node_version;
std::string node_arch;
std::string node_platform;
// Result of v8::ScriptCompiler::CachedDataVersionTag().
uint32_t v8_cache_version_tag;
SnapshotFlags flags;
};
struct SnapshotData {
enum class DataOwnership { kOwned, kNotOwned };
static const uint32_t kMagic = 0x143da19;
static const SnapshotIndex kNodeVMContextIndex = 0;
static const SnapshotIndex kNodeBaseContextIndex = kNodeVMContextIndex + 1;
static const SnapshotIndex kNodeMainContextIndex = kNodeBaseContextIndex + 1;
DataOwnership data_ownership = DataOwnership::kOwned;
SnapshotMetadata metadata;
// The result of v8::SnapshotCreator::CreateBlob() during the snapshot
// building process.
v8::StartupData v8_snapshot_blob_data{nullptr, 0};
IsolateDataSerializeInfo isolate_data_info;
// TODO(joyeecheung): there should be a vector of env_info once we snapshot
// the worker environments.
EnvSerializeInfo env_info;
// A vector of built-in ids and v8::ScriptCompiler::CachedData, this can be
// shared across Node.js instances because they are supposed to share the
// read only space. We use builtins::CodeCacheInfo because
// v8::ScriptCompiler::CachedData is not copyable.
std::vector<builtins::CodeCacheInfo> code_cache;
void ToFile(FILE* out) const;
std::vector<char> ToBlob() const;
// If returns false, the metadata doesn't match the current Node.js binary,
// and the caller should not consume the snapshot data.
bool Check() const;
static bool FromFile(SnapshotData* out, FILE* in);
static bool FromBlob(SnapshotData* out, const std::vector<char>& in);
static bool FromBlob(SnapshotData* out, std::string_view in);
static const SnapshotData* FromEmbedderWrapper(
const EmbedderSnapshotData* data);
EmbedderSnapshotData::Pointer AsEmbedderWrapper() const;
~SnapshotData();
};
void DefaultProcessExitHandlerInternal(Environment* env, ExitCode exit_code);
v8::Maybe<ExitCode> SpinEventLoopInternal(Environment* env);
v8::Maybe<ExitCode> EmitProcessExitInternal(Environment* env);
/**
* Environment is a per-isolate data structure that represents an execution
* environment. Each environment has a principal realm. An environment can
* create multiple subsidiary synthetic realms.
*/
class Environment : public MemoryRetainer {
public:
Environment(const Environment&) = delete;
Environment& operator=(const Environment&) = delete;
Environment(Environment&&) = delete;
Environment& operator=(Environment&&) = delete;
SET_MEMORY_INFO_NAME(Environment)
static std::string GetExecPath(const std::vector<std::string>& argv);
static std::string GetCwd(const std::string& exec_path);
inline size_t SelfSize() const override;
bool IsRootNode() const override { return true; }
void MemoryInfo(MemoryTracker* tracker) const override;
EnvSerializeInfo Serialize(v8::SnapshotCreator* creator);
void DeserializeProperties(const EnvSerializeInfo* info);
void PrintInfoForSnapshotIfDebug();
void EnqueueDeserializeRequest(DeserializeRequestCallback cb,
v8::Local<v8::Object> holder,
int index,
InternalFieldInfoBase* info);
void RunDeserializeRequests();
// Should be called before InitializeInspector()
void InitializeDiagnostics();
#if HAVE_INSPECTOR
// If the environment is created for a worker, pass parent_handle and
// the ownership if transferred into the Environment.
void InitializeInspector(
std::unique_ptr<inspector::ParentInspectorHandle> parent_handle);
#endif
inline size_t async_callback_scope_depth() const;
inline void PushAsyncCallbackScope();
inline void PopAsyncCallbackScope();
static inline Environment* GetCurrent(v8::Isolate* isolate);
static inline Environment* GetCurrent(v8::Local<v8::Context> context);
static inline Environment* GetCurrent(
const v8::FunctionCallbackInfo<v8::Value>& info);
template <typename T>
static inline Environment* GetCurrent(
const v8::PropertyCallbackInfo<T>& info);
// Create an Environment without initializing a main Context. Use
// InitializeMainContext() to initialize a main context for it.
Environment(IsolateData* isolate_data,
v8::Isolate* isolate,
const std::vector<std::string>& args,
const std::vector<std::string>& exec_args,
const EnvSerializeInfo* env_info,
EnvironmentFlags::Flags flags,
ThreadId thread_id);
void InitializeMainContext(v8::Local<v8::Context> context,
const EnvSerializeInfo* env_info);
~Environment() override;
void InitializeLibuv();
inline const std::vector<std::string>& exec_argv();
inline const std::vector<std::string>& argv();
const std::string& exec_path() const;
typedef void (*HandleCleanupCb)(Environment* env,
uv_handle_t* handle,
void* arg);
struct HandleCleanup {
uv_handle_t* handle_;
HandleCleanupCb cb_;
void* arg_;
};
void RegisterHandleCleanups();
void CleanupHandles();
void Exit(ExitCode code);
void ExitEnv(StopFlags::Flags flags);
// Register clean-up cb to be called on environment destruction.
inline void RegisterHandleCleanup(uv_handle_t* handle,
HandleCleanupCb cb,
void* arg);
template <typename T, typename OnCloseCallback>
inline void CloseHandle(T* handle, OnCloseCallback callback);
void ResetPromiseHooks(v8::Local<v8::Function> init,
v8::Local<v8::Function> before,
v8::Local<v8::Function> after,
v8::Local<v8::Function> resolve);
void AssignToContext(v8::Local<v8::Context> context,
Realm* realm,
const ContextInfo& info);
void UnassignFromContext(v8::Local<v8::Context> context);
void TrackShadowRealm(shadow_realm::ShadowRealm* realm);
void UntrackShadowRealm(shadow_realm::ShadowRealm* realm);
void StartProfilerIdleNotifier();
inline v8::Isolate* isolate() const;
inline uv_loop_t* event_loop() const;
void TryLoadAddon(const char* filename,
int flags,
const std::function<bool(binding::DLib*)>& was_loaded);
static inline Environment* from_timer_handle(uv_timer_t* handle);
inline uv_timer_t* timer_handle();
static inline Environment* from_immediate_check_handle(uv_check_t* handle);
inline uv_check_t* immediate_check_handle();
inline uv_idle_t* immediate_idle_handle();
inline void IncreaseWaitingRequestCounter();
inline void DecreaseWaitingRequestCounter();
inline AsyncHooks* async_hooks();
inline ImmediateInfo* immediate_info();
inline AliasedInt32Array& timeout_info();
inline TickInfo* tick_info();
inline uint64_t timer_base() const;
inline permission::Permission* permission();
inline std::shared_ptr<KVStore> env_vars();
inline void set_env_vars(std::shared_ptr<KVStore> env_vars);
inline IsolateData* isolate_data() const;
inline bool printed_error() const;
inline void set_printed_error(bool value);
void PrintSyncTrace() const;
inline void set_trace_sync_io(bool value);
inline void set_force_context_aware(bool value);
inline bool force_context_aware() const;
// This contains fields that are a pseudo-boolean that keeps track of whether
// the process is exiting, an integer representing the process exit code, and
// a pseudo-boolean to indicate whether the exit code is undefined.
inline AliasedInt32Array& exit_info();
inline void set_exiting(bool value);
bool exiting() const;
inline ExitCode exit_code(const ExitCode default_code) const;
// This stores whether the --abort-on-uncaught-exception flag was passed
// to Node.
inline bool abort_on_uncaught_exception() const;
inline void set_abort_on_uncaught_exception(bool value);
// This is a pseudo-boolean that keeps track of whether an uncaught exception
// should abort the process or not if --abort-on-uncaught-exception was
// passed to Node. If the flag was not passed, it is ignored.
inline AliasedUint32Array& should_abort_on_uncaught_toggle();
inline AliasedInt32Array& stream_base_state();
// The necessary API for async_hooks.
inline double new_async_id();
inline double execution_async_id();
inline double trigger_async_id();
inline double get_default_trigger_async_id();
// List of id's that have been destroyed and need the destroy() cb called.
inline std::vector<double>* destroy_async_id_list();
builtins::BuiltinLoader* builtin_loader();
std::unordered_multimap<int, loader::ModuleWrap*> hash_to_module_map;
EnabledDebugList* enabled_debug_list() { return &enabled_debug_list_; }
inline performance::PerformanceState* performance_state();
void CollectUVExceptionInfo(v8::Local<v8::Value> context,
int errorno,
const char* syscall = nullptr,
const char* message = nullptr,
const char* path = nullptr,
const char* dest = nullptr);
// If this flag is set, calls into JS (if they would be observable
// from userland) must be avoided. This flag does not indicate whether
// calling into JS is allowed from a VM perspective at this point.
inline bool can_call_into_js() const;
inline void set_can_call_into_js(bool can_call_into_js);
// Increase or decrease a counter that manages whether this Environment
// keeps the event loop alive on its own or not. The counter starts out at 0,
// meaning it does not, and any positive value will make it keep the event
// loop alive.
// This is used by Workers to manage their own .ref()/.unref() implementation,
// as Workers aren't directly associated with their own libuv handles.
void add_refs(int64_t diff);
// Convenient getter of the principal realm's has_run_bootstrapping_code().
inline bool has_run_bootstrapping_code() const;
inline bool has_serialized_options() const;
inline void set_has_serialized_options(bool has_serialized_options);
inline bool is_main_thread() const;
inline bool no_native_addons() const;
inline bool should_not_register_esm_loader() const;
inline bool should_create_inspector() const;
inline bool owns_process_state() const;
inline bool owns_inspector() const;
inline bool tracks_unmanaged_fds() const;
inline bool hide_console_windows() const;
inline bool no_global_search_paths() const;
inline bool should_start_debug_signal_handler() const;
inline bool no_browser_globals() const;
inline uint64_t thread_id() const;
inline worker::Worker* worker_context() const;
Environment* worker_parent_env() const;
inline void add_sub_worker_context(worker::Worker* context);
inline void remove_sub_worker_context(worker::Worker* context);
void stop_sub_worker_contexts();
template <typename Fn>
inline void ForEachWorker(Fn&& iterator);
// Determine if the environment is stopping. This getter is thread-safe.
inline bool is_stopping() const;
inline void set_stopping(bool value);
inline std::list<node_module>* extra_linked_bindings();
inline node_module* extra_linked_bindings_head();
inline node_module* extra_linked_bindings_tail();
inline const Mutex& extra_linked_bindings_mutex() const;
inline bool filehandle_close_warning() const;
inline void set_filehandle_close_warning(bool on);
inline void set_source_maps_enabled(bool on);
inline bool source_maps_enabled() const;
inline void ThrowError(const char* errmsg);
inline void ThrowTypeError(const char* errmsg);
inline void ThrowRangeError(const char* errmsg);
inline void ThrowErrnoException(int errorno,
const char* syscall = nullptr,
const char* message = nullptr,
const char* path = nullptr);
inline void ThrowUVException(int errorno,
const char* syscall = nullptr,
const char* message = nullptr,
const char* path = nullptr,
const char* dest = nullptr);
void AtExit(void (*cb)(void* arg), void* arg);
void RunAtExitCallbacks();
v8::Maybe<bool> CheckUnsettledTopLevelAwait();
void RunWeakRefCleanup();
v8::MaybeLocal<v8::Value> RunSnapshotSerializeCallback() const;
v8::MaybeLocal<v8::Value> RunSnapshotDeserializeCallback() const;
v8::MaybeLocal<v8::Value> RunSnapshotDeserializeMain() const;
// Primitive values are shared across realms.
// The getters simply proxy to the per-isolate primitive.
#define VP(PropertyName, StringValue) V(v8::Private, PropertyName)
#define VY(PropertyName, StringValue) V(v8::Symbol, PropertyName)
#define VS(PropertyName, StringValue) V(v8::String, PropertyName)
#define V(TypeName, PropertyName) \
inline v8::Local<TypeName> PropertyName() const;
PER_ISOLATE_PRIVATE_SYMBOL_PROPERTIES(VP)
PER_ISOLATE_SYMBOL_PROPERTIES(VY)
PER_ISOLATE_STRING_PROPERTIES(VS)
#undef V
#undef VS
#undef VY
#undef VP
#define V(PropertyName, TypeName) \
inline v8::Local<TypeName> PropertyName() const; \
inline void set_ ## PropertyName(v8::Local<TypeName> value);
PER_ISOLATE_TEMPLATE_PROPERTIES(V)
// Per-realm strong persistent values of the principal realm.
// Get/set the value with an explicit realm instead when possible.
// Deprecate soon.
PER_REALM_STRONG_PERSISTENT_VALUES(V)
#undef V
// Return the context of the principal realm.
// Get the context with an explicit realm instead when possible.
// Deprecate soon.
inline v8::Local<v8::Context> context() const;
inline Realm* principal_realm() const;
#if HAVE_INSPECTOR
inline inspector::Agent* inspector_agent() const {
return inspector_agent_.get();
}
inline void StopInspector() {
inspector_agent_.reset();
}
inline bool is_in_inspector_console_call() const;
inline void set_is_in_inspector_console_call(bool value);
#endif
typedef ListHead<HandleWrap, &HandleWrap::handle_wrap_queue_> HandleWrapQueue;
typedef ListHead<ReqWrapBase, &ReqWrapBase::req_wrap_queue_> ReqWrapQueue;
inline HandleWrapQueue* handle_wrap_queue() { return &handle_wrap_queue_; }
inline ReqWrapQueue* req_wrap_queue() { return &req_wrap_queue_; }
// https://w3c.github.io/hr-time/#dfn-time-origin
inline uint64_t time_origin() {
return time_origin_;
}
// https://w3c.github.io/hr-time/#dfn-get-time-origin-timestamp
inline double time_origin_timestamp() {
return time_origin_timestamp_;
}
inline bool EmitProcessEnvWarning() {
bool current_value = emit_env_nonstring_warning_;
emit_env_nonstring_warning_ = false;
return current_value;
}
inline bool EmitErrNameWarning() {
bool current_value = emit_err_name_warning_;
emit_err_name_warning_ = false;
return current_value;
}
// cb will be called as cb(env) on the next event loop iteration.
// Unlike the JS setImmediate() function, nested SetImmediate() calls will
// be run without returning control to the event loop, similar to nextTick().
template <typename Fn>
inline void SetImmediate(
Fn&& cb, CallbackFlags::Flags flags = CallbackFlags::kRefed);
template <typename Fn>
// This behaves like SetImmediate() but can be called from any thread.
inline void SetImmediateThreadsafe(
Fn&& cb, CallbackFlags::Flags flags = CallbackFlags::kRefed);
// This behaves like V8's Isolate::RequestInterrupt(), but also accounts for
// the event loop (i.e. combines the V8 function with SetImmediate()).
// The passed callback may not throw exceptions.
// This function can be called from any thread.
template <typename Fn>
inline void RequestInterrupt(Fn&& cb);
// This needs to be available for the JS-land setImmediate().
void ToggleImmediateRef(bool ref);
inline void PushShouldNotAbortOnUncaughtScope();
inline void PopShouldNotAbortOnUncaughtScope();
inline bool inside_should_not_abort_on_uncaught_scope() const;
static inline Environment* ForAsyncHooks(AsyncHooks* hooks);
v8::Local<v8::Value> GetNow();
uint64_t GetNowUint64();
void ScheduleTimer(int64_t duration);
void ToggleTimerRef(bool ref);
inline void AddCleanupHook(CleanupQueue::Callback cb, void* arg);
inline void RemoveCleanupHook(CleanupQueue::Callback cb, void* arg);
void RunCleanup();
static void TracePromises(v8::PromiseHookType type,
v8::Local<v8::Promise> promise,
v8::Local<v8::Value> parent);
static size_t NearHeapLimitCallback(void* data,
size_t current_heap_limit,
size_t initial_heap_limit);
static void BuildEmbedderGraph(v8::Isolate* isolate,
v8::EmbedderGraph* graph,
void* data);
inline std::shared_ptr<EnvironmentOptions> options();
inline std::shared_ptr<ExclusiveAccess<HostPort>> inspector_host_port();
inline int32_t stack_trace_limit() const { return 10; }
#if HAVE_INSPECTOR
void set_coverage_connection(
std::unique_ptr<profiler::V8CoverageConnection> connection);
profiler::V8CoverageConnection* coverage_connection();
inline void set_coverage_directory(const char* directory);
inline const std::string& coverage_directory() const;
void set_cpu_profiler_connection(
std::unique_ptr<profiler::V8CpuProfilerConnection> connection);
profiler::V8CpuProfilerConnection* cpu_profiler_connection();
inline void set_cpu_prof_name(const std::string& name);
inline const std::string& cpu_prof_name() const;
inline void set_cpu_prof_interval(uint64_t interval);
inline uint64_t cpu_prof_interval() const;
inline void set_cpu_prof_dir(const std::string& dir);
inline const std::string& cpu_prof_dir() const;
void set_heap_profiler_connection(
std::unique_ptr<profiler::V8HeapProfilerConnection> connection);
profiler::V8HeapProfilerConnection* heap_profiler_connection();
inline void set_heap_prof_name(const std::string& name);
inline const std::string& heap_prof_name() const;