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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	node_perf.cc	Lines:	153	171	89.5 %
Date:	2022-05-23 04:15:47	Branches:	34	52	65.4 %


#include "node_perf.h"
#include "aliased_buffer.h"
#include "env-inl.h"
#include "histogram-inl.h"
#include "memory_tracker-inl.h"
#include "node_buffer.h"
#include "node_external_reference.h"
#include "node_internals.h"
#include "node_process-inl.h"
#include "util-inl.h"

#include <cinttypes>

namespace node {
namespace performance {

using v8::Context;
using v8::DontDelete;
using v8::Function;
using v8::FunctionCallbackInfo;
using v8::FunctionTemplate;
using v8::GCCallbackFlags;
using v8::GCType;
using v8::Int32;
using v8::Integer;
using v8::Isolate;
using v8::Local;
using v8::MaybeLocal;
using v8::Number;
using v8::Object;
using v8::PropertyAttribute;
using v8::ReadOnly;
using v8::String;
using v8::Value;

// Microseconds in a millisecond, as a float.
#define MICROS_PER_MILLIS 1e3

// https://w3c.github.io/hr-time/#dfn-time-origin
const uint64_t timeOrigin = PERFORMANCE_NOW();
// https://w3c.github.io/hr-time/#dfn-time-origin-timestamp
const double timeOriginTimestamp = GetCurrentTimeInMicroseconds();
uint64_t performance_v8_start;

PerformanceState::PerformanceState(Isolate* isolate,
                                   const PerformanceState::SerializeInfo* info)
    : root(isolate,
           sizeof(performance_state_internal),
           MAYBE_FIELD_PTR(info, root)),
      milestones(isolate,
                 offsetof(performance_state_internal, milestones),
                 NODE_PERFORMANCE_MILESTONE_INVALID,
                 root,
                 MAYBE_FIELD_PTR(info, milestones)),
      observers(isolate,
                offsetof(performance_state_internal, observers),
                NODE_PERFORMANCE_ENTRY_TYPE_INVALID,
                root,
                MAYBE_FIELD_PTR(info, observers)) {
  if (info == nullptr) {
    for (size_t i = 0; i < milestones.Length(); i++) milestones[i] = -1.;
  }
}

PerformanceState::SerializeInfo PerformanceState::Serialize(
    v8::Local<v8::Context> context, v8::SnapshotCreator* creator) {
  SerializeInfo info{root.Serialize(context, creator),
                     milestones.Serialize(context, creator),
                     observers.Serialize(context, creator)};
  return info;
}

void PerformanceState::Deserialize(v8::Local<v8::Context> context) {
  root.Deserialize(context);
  // This is just done to set up the pointers, we will actually reset
  // all the milestones after deserialization.
  milestones.Deserialize(context);
  observers.Deserialize(context);
}

std::ostream& operator<<(std::ostream& o,
                         const PerformanceState::SerializeInfo& i) {
  o << "{\n"
    << "  " << i.root << ",  // root\n"
    << "  " << i.milestones << ",  // milestones\n"
    << "  " << i.observers << ",  // observers\n"
    << "}";
  return o;
}

void PerformanceState::Mark(PerformanceMilestone milestone, uint64_t ts) {
  this->milestones[milestone] = static_cast<double>(ts);
  TRACE_EVENT_INSTANT_WITH_TIMESTAMP0(
      TRACING_CATEGORY_NODE1(bootstrap),
      GetPerformanceMilestoneName(milestone),
      TRACE_EVENT_SCOPE_THREAD, ts / 1000);
}

// Allows specific Node.js lifecycle milestones to be set from JavaScript
void MarkMilestone(const FunctionCallbackInfo<Value>& args) {
  Environment* env = Environment::GetCurrent(args);
  PerformanceMilestone milestone =
      static_cast<PerformanceMilestone>(args[0].As<Int32>()->Value());
  if (milestone != NODE_PERFORMANCE_MILESTONE_INVALID)
    env->performance_state()->Mark(milestone);
}

void SetupPerformanceObservers(const FunctionCallbackInfo<Value>& args) {
  Environment* env = Environment::GetCurrent(args);
  CHECK(args[0]->IsFunction());
  env->set_performance_entry_callback(args[0].As<Function>());
}

// Marks the start of a GC cycle
void MarkGarbageCollectionStart(
    Isolate* isolate,
    GCType type,
    GCCallbackFlags flags,
    void* data) {
  Environment* env = static_cast<Environment*>(data);
  env->performance_state()->performance_last_gc_start_mark = PERFORMANCE_NOW();
}

MaybeLocal<Object> GCPerformanceEntryTraits::GetDetails(
    Environment* env,
    const GCPerformanceEntry& entry) {
  Local<Object> obj = Object::New(env->isolate());

  if (!obj->Set(
          env->context(),
          env->kind_string(),
          Integer::NewFromUnsigned(
              env->isolate(),
              entry.details.kind)).IsJust()) {
    return MaybeLocal<Object>();
  }

  if (!obj->Set(
          env->context(),
          env->flags_string(),
          Integer::NewFromUnsigned(
              env->isolate(),
              entry.details.flags)).IsJust()) {
    return MaybeLocal<Object>();
  }

  return obj;
}

// Marks the end of a GC cycle
void MarkGarbageCollectionEnd(
    Isolate* isolate,
    GCType type,
    GCCallbackFlags flags,
    void* data) {
  Environment* env = static_cast<Environment*>(data);
  PerformanceState* state = env->performance_state();
  // If no one is listening to gc performance entries, do not create them.
  if (LIKELY(!state->observers[NODE_PERFORMANCE_ENTRY_TYPE_GC]))
    return;

  double start_time = state->performance_last_gc_start_mark / 1e6;
  double duration = (PERFORMANCE_NOW() / 1e6) - start_time;

  std::unique_ptr<GCPerformanceEntry> entry =
      std::make_unique<GCPerformanceEntry>(
          "gc",
          start_time,
          duration,
          GCPerformanceEntry::Details(
            static_cast<PerformanceGCKind>(type),
            static_cast<PerformanceGCFlags>(flags)));

  env->SetImmediate([entry = std::move(entry)](Environment* env) {
    entry->Notify(env);
  }, CallbackFlags::kUnrefed);
}

void GarbageCollectionCleanupHook(void* data) {
  Environment* env = static_cast<Environment*>(data);
  env->isolate()->RemoveGCPrologueCallback(MarkGarbageCollectionStart, data);
  env->isolate()->RemoveGCEpilogueCallback(MarkGarbageCollectionEnd, data);
}

static void InstallGarbageCollectionTracking(
    const FunctionCallbackInfo<Value>& args) {
  Environment* env = Environment::GetCurrent(args);

  env->isolate()->AddGCPrologueCallback(MarkGarbageCollectionStart,
                                        static_cast<void*>(env));
  env->isolate()->AddGCEpilogueCallback(MarkGarbageCollectionEnd,
                                        static_cast<void*>(env));
  env->AddCleanupHook(GarbageCollectionCleanupHook, env);
}

static void RemoveGarbageCollectionTracking(
  const FunctionCallbackInfo<Value> &args) {
  Environment* env = Environment::GetCurrent(args);

  env->RemoveCleanupHook(GarbageCollectionCleanupHook, env);
  GarbageCollectionCleanupHook(env);
}

// Gets the name of a function
inline Local<Value> GetName(Local<Function> fn) {
  Local<Value> val = fn->GetDebugName();
  if (val.IsEmpty() || val->IsUndefined()) {
    Local<Value> boundFunction = fn->GetBoundFunction();
    if (!boundFunction.IsEmpty() && !boundFunction->IsUndefined()) {
      val = GetName(boundFunction.As<Function>());
    }
  }
  return val;
}

// Notify a custom PerformanceEntry to observers
void Notify(const FunctionCallbackInfo<Value>& args) {
  Environment* env = Environment::GetCurrent(args);
  Utf8Value type(env->isolate(), args[0]);
  Local<Value> entry = args[1];
  PerformanceEntryType entry_type = ToPerformanceEntryTypeEnum(*type);
  AliasedUint32Array& observers = env->performance_state()->observers;
  if (entry_type != NODE_PERFORMANCE_ENTRY_TYPE_INVALID &&
      observers[entry_type]) {
    USE(env->performance_entry_callback()->
      Call(env->context(), Undefined(env->isolate()), 1, &entry));
  }
}

// Return idle time of the event loop
void LoopIdleTime(const FunctionCallbackInfo<Value>& args) {
  Environment* env = Environment::GetCurrent(args);
  uint64_t idle_time = uv_metrics_idle_time(env->event_loop());
  args.GetReturnValue().Set(1.0 * idle_time / 1e6);
}

void CreateELDHistogram(const FunctionCallbackInfo<Value>& args) {
  Environment* env = Environment::GetCurrent(args);
  int64_t interval = args[0].As<Integer>()->Value();
  CHECK_GT(interval, 0);
  BaseObjectPtr<IntervalHistogram> histogram =
      IntervalHistogram::Create(env, interval, [](Histogram& histogram) {
        uint64_t delta = histogram.RecordDelta();
        TRACE_COUNTER1(TRACING_CATEGORY_NODE2(perf, event_loop),
                        "delay", delta);
        TRACE_COUNTER1(TRACING_CATEGORY_NODE2(perf, event_loop),
                      "min", histogram.Min());
        TRACE_COUNTER1(TRACING_CATEGORY_NODE2(perf, event_loop),
                      "max", histogram.Max());
        TRACE_COUNTER1(TRACING_CATEGORY_NODE2(perf, event_loop),
                      "mean", histogram.Mean());
        TRACE_COUNTER1(TRACING_CATEGORY_NODE2(perf, event_loop),
                      "stddev", histogram.Stddev());
      }, Histogram::Options { 1000 });
  args.GetReturnValue().Set(histogram->object());
}

void GetTimeOrigin(const FunctionCallbackInfo<Value>& args) {
  args.GetReturnValue().Set(Number::New(args.GetIsolate(), timeOrigin / 1e6));
}

void GetTimeOriginTimeStamp(const FunctionCallbackInfo<Value>& args) {
  args.GetReturnValue().Set(
      Number::New(args.GetIsolate(), timeOriginTimestamp / MICROS_PER_MILLIS));
}

void Initialize(Local<Object> target,
                Local<Value> unused,
                Local<Context> context,
                void* priv) {
  Environment* env = Environment::GetCurrent(context);
  Isolate* isolate = env->isolate();
  PerformanceState* state = env->performance_state();

  target->Set(context,
              FIXED_ONE_BYTE_STRING(isolate, "observerCounts"),
              state->observers.GetJSArray()).Check();
  target->Set(context,
              FIXED_ONE_BYTE_STRING(isolate, "milestones"),
              state->milestones.GetJSArray()).Check();

  Local<String> performanceEntryString =
      FIXED_ONE_BYTE_STRING(isolate, "PerformanceEntry");

  Local<FunctionTemplate> pe = FunctionTemplate::New(isolate);
  pe->SetClassName(performanceEntryString);
  Local<Function> fn = pe->GetFunction(context).ToLocalChecked();
  target->Set(context, performanceEntryString, fn).Check();
  env->set_performance_entry_template(fn);

  env->SetMethod(target, "markMilestone", MarkMilestone);
  env->SetMethod(target, "setupObservers", SetupPerformanceObservers);
  env->SetMethod(target,
                 "installGarbageCollectionTracking",
                 InstallGarbageCollectionTracking);
  env->SetMethod(target,
                 "removeGarbageCollectionTracking",
                 RemoveGarbageCollectionTracking);
  env->SetMethod(target, "notify", Notify);
  env->SetMethod(target, "loopIdleTime", LoopIdleTime);
  env->SetMethod(target, "getTimeOrigin", GetTimeOrigin);
  env->SetMethod(target, "getTimeOriginTimestamp", GetTimeOriginTimeStamp);
  env->SetMethod(target, "createELDHistogram", CreateELDHistogram);

  Local<Object> constants = Object::New(isolate);

  NODE_DEFINE_CONSTANT(constants, NODE_PERFORMANCE_GC_MAJOR);
  NODE_DEFINE_CONSTANT(constants, NODE_PERFORMANCE_GC_MINOR);
  NODE_DEFINE_CONSTANT(constants, NODE_PERFORMANCE_GC_INCREMENTAL);
  NODE_DEFINE_CONSTANT(constants, NODE_PERFORMANCE_GC_WEAKCB);

  NODE_DEFINE_CONSTANT(
    constants, NODE_PERFORMANCE_GC_FLAGS_NO);
  NODE_DEFINE_CONSTANT(
    constants, NODE_PERFORMANCE_GC_FLAGS_CONSTRUCT_RETAINED);
  NODE_DEFINE_CONSTANT(
    constants, NODE_PERFORMANCE_GC_FLAGS_FORCED);
  NODE_DEFINE_CONSTANT(
    constants, NODE_PERFORMANCE_GC_FLAGS_SYNCHRONOUS_PHANTOM_PROCESSING);
  NODE_DEFINE_CONSTANT(
    constants, NODE_PERFORMANCE_GC_FLAGS_ALL_AVAILABLE_GARBAGE);
  NODE_DEFINE_CONSTANT(
    constants, NODE_PERFORMANCE_GC_FLAGS_ALL_EXTERNAL_MEMORY);
  NODE_DEFINE_CONSTANT(
    constants, NODE_PERFORMANCE_GC_FLAGS_SCHEDULE_IDLE);

#define V(name, _)                                                            \
  NODE_DEFINE_HIDDEN_CONSTANT(constants, NODE_PERFORMANCE_ENTRY_TYPE_##name);
  NODE_PERFORMANCE_ENTRY_TYPES(V)
#undef V

#define V(name, _)                                                            \
  NODE_DEFINE_HIDDEN_CONSTANT(constants, NODE_PERFORMANCE_MILESTONE_##name);
  NODE_PERFORMANCE_MILESTONES(V)
#undef V

  PropertyAttribute attr =
      static_cast<PropertyAttribute>(ReadOnly | DontDelete);

  target->DefineOwnProperty(context,
                            env->constants_string(),
                            constants,
                            attr).ToChecked();

  HistogramBase::Initialize(env, target);
}

void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
  registry->Register(MarkMilestone);
  registry->Register(SetupPerformanceObservers);
  registry->Register(InstallGarbageCollectionTracking);
  registry->Register(RemoveGarbageCollectionTracking);
  registry->Register(Notify);
  registry->Register(LoopIdleTime);
  registry->Register(GetTimeOrigin);
  registry->Register(GetTimeOriginTimeStamp);
  registry->Register(CreateELDHistogram);
  HistogramBase::RegisterExternalReferences(registry);
  IntervalHistogram::RegisterExternalReferences(registry);
}
}  // namespace performance
}  // namespace node

NODE_MODULE_CONTEXT_AWARE_INTERNAL(performance, node::performance::Initialize)
NODE_MODULE_EXTERNAL_REFERENCE(performance,
                               node::performance::RegisterExternalReferences)


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			#include "node_perf.h"
2			#include "aliased_buffer.h"
3			#include "env-inl.h"
4			#include "histogram-inl.h"
5			#include "memory_tracker-inl.h"
6			#include "node_buffer.h"
7			#include "node_external_reference.h"
8			#include "node_internals.h"
9			#include "node_process-inl.h"
10			#include "util-inl.h"
11
12			#include <cinttypes>
13
14			namespace node {
15			namespace performance {
16
17			using v8::Context;
18			using v8::DontDelete;
19			using v8::Function;
20			using v8::FunctionCallbackInfo;
21			using v8::FunctionTemplate;
22			using v8::GCCallbackFlags;
23			using v8::GCType;
24			using v8::Int32;
25			using v8::Integer;
26			using v8::Isolate;
27			using v8::Local;
28			using v8::MaybeLocal;
29			using v8::Number;
30			using v8::Object;
31			using v8::PropertyAttribute;
32			using v8::ReadOnly;
33			using v8::String;
34			using v8::Value;
35
36			// Microseconds in a millisecond, as a float.
37			#define MICROS_PER_MILLIS 1e3
38
39			// https://w3c.github.io/hr-time/#dfn-time-origin
40			const uint64_t timeOrigin = PERFORMANCE_NOW();
41			// https://w3c.github.io/hr-time/#dfn-time-origin-timestamp
42			const double timeOriginTimestamp = GetCurrentTimeInMicroseconds();
43			uint64_t performance_v8_start;
44
45		6028	PerformanceState::PerformanceState(Isolate* isolate,
46		6028	const PerformanceState::SerializeInfo* info)
47			: root(isolate,
48			sizeof(performance_state_internal),
49			MAYBE_FIELD_PTR(info, root)),
50			milestones(isolate,
51			offsetof(performance_state_internal, milestones),
52			NODE_PERFORMANCE_MILESTONE_INVALID,
53		6028	root,
54			MAYBE_FIELD_PTR(info, milestones)),
55			observers(isolate,
56			offsetof(performance_state_internal, observers),
57			NODE_PERFORMANCE_ENTRY_TYPE_INVALID,
58		6028	root,
59	✓✓✓✓ ✓✓	6028	MAYBE_FIELD_PTR(info, observers)) {
60	✓✓	6028	if (info == nullptr) {
61	✓✓	5929	for (size_t i = 0; i < milestones.Length(); i++) milestones[i] = -1.;
62			}
63		6028	}
64
65		6	PerformanceState::SerializeInfo PerformanceState::Serialize(
66			v8::Local<v8::Context> context, v8::SnapshotCreator* creator) {
67		6	SerializeInfo info{root.Serialize(context, creator),
68		6	milestones.Serialize(context, creator),
69		6	observers.Serialize(context, creator)};
70		6	return info;
71			}
72
73		5181	void PerformanceState::Deserialize(v8::Local<v8::Context> context) {
74		5181	root.Deserialize(context);
75			// This is just done to set up the pointers, we will actually reset
76			// all the milestones after deserialization.
77		5181	milestones.Deserialize(context);
78		5181	observers.Deserialize(context);
79		5181	}
80
81		6	std::ostream& operator<<(std::ostream& o,
82			const PerformanceState::SerializeInfo& i) {
83			o << "{\n"
84		6	<< " " << i.root << ", // root\n"
85		6	<< " " << i.milestones << ", // milestones\n"
86		6	<< " " << i.observers << ", // observers\n"
87		6	<< "}";
88		6	return o;
89			}
90
91		35193	void PerformanceState::Mark(PerformanceMilestone milestone, uint64_t ts) {
92		35193	this->milestones[milestone] = static_cast<double>(ts);
93	✓✓✓✓	40390	TRACE_EVENT_INSTANT_WITH_TIMESTAMP0(
94			TRACING_CATEGORY_NODE1(bootstrap),
95			GetPerformanceMilestoneName(milestone),
96			TRACE_EVENT_SCOPE_THREAD, ts / 1000);
97		35193	}
98
99			// Allows specific Node.js lifecycle milestones to be set from JavaScript
100			void MarkMilestone(const FunctionCallbackInfo<Value>& args) {
101			Environment* env = Environment::GetCurrent(args);
102			PerformanceMilestone milestone =
103			static_cast<PerformanceMilestone>(args[0].As<Int32>()->Value());
104			if (milestone != NODE_PERFORMANCE_MILESTONE_INVALID)
105			env->performance_state()->Mark(milestone);
106			}
107
108		847	void SetupPerformanceObservers(const FunctionCallbackInfo<Value>& args) {
109		847	Environment* env = Environment::GetCurrent(args);
110	✗✓	847	CHECK(args[0]->IsFunction());
111		1694	env->set_performance_entry_callback(args[0].As<Function>());
112		847	}
113
114			// Marks the start of a GC cycle
115		1	void MarkGarbageCollectionStart(
116			Isolate* isolate,
117			GCType type,
118			GCCallbackFlags flags,
119			void* data) {
120		1	Environment* env = static_cast<Environment*>(data);
121		1	env->performance_state()->performance_last_gc_start_mark = PERFORMANCE_NOW();
122		1	}
123
124		1	MaybeLocal<Object> GCPerformanceEntryTraits::GetDetails(
125			Environment* env,
126			const GCPerformanceEntry& entry) {
127		1	Local<Object> obj = Object::New(env->isolate());
128
129		2	if (!obj->Set(
130			env->context(),
131			env->kind_string(),
132			Integer::NewFromUnsigned(
133			env->isolate(),
134	✗✓	4	entry.details.kind)).IsJust()) {
135			return MaybeLocal<Object>();
136			}
137
138		2	if (!obj->Set(
139			env->context(),
140			env->flags_string(),
141			Integer::NewFromUnsigned(
142			env->isolate(),
143	✗✓	4	entry.details.flags)).IsJust()) {
144			return MaybeLocal<Object>();
145			}
146
147		1	return obj;
148			}
149
150			// Marks the end of a GC cycle
151		1	void MarkGarbageCollectionEnd(
152			Isolate* isolate,
153			GCType type,
154			GCCallbackFlags flags,
155			void* data) {
156		1	Environment* env = static_cast<Environment*>(data);
157		1	PerformanceState* state = env->performance_state();
158			// If no one is listening to gc performance entries, do not create them.
159	✗✓	1	if (LIKELY(!state->observers[NODE_PERFORMANCE_ENTRY_TYPE_GC]))
160			return;
161
162		1	double start_time = state->performance_last_gc_start_mark / 1e6;
163		1	double duration = (PERFORMANCE_NOW() / 1e6) - start_time;
164
165			std::unique_ptr<GCPerformanceEntry> entry =
166			std::make_unique<GCPerformanceEntry>(
167			"gc",
168			start_time,
169			duration,
170		1	GCPerformanceEntry::Details(
171			static_cast<PerformanceGCKind>(type),
172		1	static_cast<PerformanceGCFlags>(flags)));
173
174		1	env->SetImmediate([entry = std::move(entry)](Environment* env) {
175		1	entry->Notify(env);
176		1	}, CallbackFlags::kUnrefed);
177			}
178
179		4	void GarbageCollectionCleanupHook(void* data) {
180		4	Environment* env = static_cast<Environment*>(data);
181		4	env->isolate()->RemoveGCPrologueCallback(MarkGarbageCollectionStart, data);
182		4	env->isolate()->RemoveGCEpilogueCallback(MarkGarbageCollectionEnd, data);
183		4	}
184
185		4	static void InstallGarbageCollectionTracking(
186			const FunctionCallbackInfo<Value>& args) {
187		4	Environment* env = Environment::GetCurrent(args);
188
189		4	env->isolate()->AddGCPrologueCallback(MarkGarbageCollectionStart,
190			static_cast<void*>(env));
191		4	env->isolate()->AddGCEpilogueCallback(MarkGarbageCollectionEnd,
192			static_cast<void*>(env));
193		4	env->AddCleanupHook(GarbageCollectionCleanupHook, env);
194		4	}
195
196		3	static void RemoveGarbageCollectionTracking(
197			const FunctionCallbackInfo<Value> &args) {
198		3	Environment* env = Environment::GetCurrent(args);
199
200		3	env->RemoveCleanupHook(GarbageCollectionCleanupHook, env);
201		3	GarbageCollectionCleanupHook(env);
202		3	}
203
204			// Gets the name of a function
205			inline Local<Value> GetName(Local<Function> fn) {
206			Local<Value> val = fn->GetDebugName();
207			if (val.IsEmpty() \|\| val->IsUndefined()) {
208			Local<Value> boundFunction = fn->GetBoundFunction();
209			if (!boundFunction.IsEmpty() && !boundFunction->IsUndefined()) {
210			val = GetName(boundFunction.As<Function>());
211			}
212			}
213			return val;
214			}
215
216			// Notify a custom PerformanceEntry to observers
217			void Notify(const FunctionCallbackInfo<Value>& args) {
218			Environment* env = Environment::GetCurrent(args);
219			Utf8Value type(env->isolate(), args[0]);
220			Local<Value> entry = args[1];
221			PerformanceEntryType entry_type = ToPerformanceEntryTypeEnum(*type);
222			AliasedUint32Array& observers = env->performance_state()->observers;
223			if (entry_type != NODE_PERFORMANCE_ENTRY_TYPE_INVALID &&
224			observers[entry_type]) {
225			USE(env->performance_entry_callback()->
226			Call(env->context(), Undefined(env->isolate()), 1, &entry));
227			}
228			}
229
230			// Return idle time of the event loop
231		50	void LoopIdleTime(const FunctionCallbackInfo<Value>& args) {
232		50	Environment* env = Environment::GetCurrent(args);
233		50	uint64_t idle_time = uv_metrics_idle_time(env->event_loop());
234		50	args.GetReturnValue().Set(1.0 * idle_time / 1e6);
235		50	}
236
237		3	void CreateELDHistogram(const FunctionCallbackInfo<Value>& args) {
238		3	Environment* env = Environment::GetCurrent(args);
239		6	int64_t interval = args[0].As<Integer>()->Value();
240	✗✓	3	CHECK_GT(interval, 0);
241			BaseObjectPtr<IntervalHistogram> histogram =
242		1769	IntervalHistogram::Create(env, interval, [](Histogram& histogram) {
243		1769	uint64_t delta = histogram.RecordDelta();
244	✓✓✗✓	1771	TRACE_COUNTER1(TRACING_CATEGORY_NODE2(perf, event_loop),
245			"delay", delta);
246	✓✓✗✓	1771	TRACE_COUNTER1(TRACING_CATEGORY_NODE2(perf, event_loop),
247			"min", histogram.Min());
248	✓✓✗✓	1771	TRACE_COUNTER1(TRACING_CATEGORY_NODE2(perf, event_loop),
249			"max", histogram.Max());
250	✓✓✗✓	1771	TRACE_COUNTER1(TRACING_CATEGORY_NODE2(perf, event_loop),
251			"mean", histogram.Mean());
252	✓✓✗✓	1771	TRACE_COUNTER1(TRACING_CATEGORY_NODE2(perf, event_loop),
253			"stddev", histogram.Stddev());
254		6	}, Histogram::Options { 1000 });
255		6	args.GetReturnValue().Set(histogram->object());
256		3	}
257
258		6842	void GetTimeOrigin(const FunctionCallbackInfo<Value>& args) {
259		6842	args.GetReturnValue().Set(Number::New(args.GetIsolate(), timeOrigin / 1e6));
260		6842	}
261
262		6842	void GetTimeOriginTimeStamp(const FunctionCallbackInfo<Value>& args) {
263		6842	args.GetReturnValue().Set(
264			Number::New(args.GetIsolate(), timeOriginTimestamp / MICROS_PER_MILLIS));
265		6842	}
266
267		847	void Initialize(Local<Object> target,
268			Local<Value> unused,
269			Local<Context> context,
270			void* priv) {
271		847	Environment* env = Environment::GetCurrent(context);
272		847	Isolate* isolate = env->isolate();
273		847	PerformanceState* state = env->performance_state();
274
275		847	target->Set(context,
276			FIXED_ONE_BYTE_STRING(isolate, "observerCounts"),
277		3388	state->observers.GetJSArray()).Check();
278		847	target->Set(context,
279			FIXED_ONE_BYTE_STRING(isolate, "milestones"),
280		2541	state->milestones.GetJSArray()).Check();
281
282			Local<String> performanceEntryString =
283		847	FIXED_ONE_BYTE_STRING(isolate, "PerformanceEntry");
284
285		847	Local<FunctionTemplate> pe = FunctionTemplate::New(isolate);
286		847	pe->SetClassName(performanceEntryString);
287		1694	Local<Function> fn = pe->GetFunction(context).ToLocalChecked();
288		847	target->Set(context, performanceEntryString, fn).Check();
289		847	env->set_performance_entry_template(fn);
290
291		847	env->SetMethod(target, "markMilestone", MarkMilestone);
292		847	env->SetMethod(target, "setupObservers", SetupPerformanceObservers);
293		847	env->SetMethod(target,
294			"installGarbageCollectionTracking",
295			InstallGarbageCollectionTracking);
296		847	env->SetMethod(target,
297			"removeGarbageCollectionTracking",
298			RemoveGarbageCollectionTracking);
299		847	env->SetMethod(target, "notify", Notify);
300		847	env->SetMethod(target, "loopIdleTime", LoopIdleTime);
301		847	env->SetMethod(target, "getTimeOrigin", GetTimeOrigin);
302		847	env->SetMethod(target, "getTimeOriginTimestamp", GetTimeOriginTimeStamp);
303		847	env->SetMethod(target, "createELDHistogram", CreateELDHistogram);
304
305		847	Local<Object> constants = Object::New(isolate);
306
307		2541	NODE_DEFINE_CONSTANT(constants, NODE_PERFORMANCE_GC_MAJOR);
308		2541	NODE_DEFINE_CONSTANT(constants, NODE_PERFORMANCE_GC_MINOR);
309		2541	NODE_DEFINE_CONSTANT(constants, NODE_PERFORMANCE_GC_INCREMENTAL);
310		2541	NODE_DEFINE_CONSTANT(constants, NODE_PERFORMANCE_GC_WEAKCB);
311
312		2541	NODE_DEFINE_CONSTANT(
313			constants, NODE_PERFORMANCE_GC_FLAGS_NO);
314		2541	NODE_DEFINE_CONSTANT(
315			constants, NODE_PERFORMANCE_GC_FLAGS_CONSTRUCT_RETAINED);
316		2541	NODE_DEFINE_CONSTANT(
317			constants, NODE_PERFORMANCE_GC_FLAGS_FORCED);
318		2541	NODE_DEFINE_CONSTANT(
319			constants, NODE_PERFORMANCE_GC_FLAGS_SYNCHRONOUS_PHANTOM_PROCESSING);
320		2541	NODE_DEFINE_CONSTANT(
321			constants, NODE_PERFORMANCE_GC_FLAGS_ALL_AVAILABLE_GARBAGE);
322		2541	NODE_DEFINE_CONSTANT(
323			constants, NODE_PERFORMANCE_GC_FLAGS_ALL_EXTERNAL_MEMORY);
324		2541	NODE_DEFINE_CONSTANT(
325			constants, NODE_PERFORMANCE_GC_FLAGS_SCHEDULE_IDLE);
326
327			#define V(name, _) \
328			NODE_DEFINE_HIDDEN_CONSTANT(constants, NODE_PERFORMANCE_ENTRY_TYPE_##name);
329		9317	NODE_PERFORMANCE_ENTRY_TYPES(V)
330			#undef V
331
332			#define V(name, _) \
333			NODE_DEFINE_HIDDEN_CONSTANT(constants, NODE_PERFORMANCE_MILESTONE_##name);
334		10164	NODE_PERFORMANCE_MILESTONES(V)
335			#undef V
336
337		847	PropertyAttribute attr =
338			static_cast<PropertyAttribute>(ReadOnly \| DontDelete);
339
340		847	target->DefineOwnProperty(context,
341			env->constants_string(),
342			constants,
343		1694	attr).ToChecked();
344
345		847	HistogramBase::Initialize(env, target);
346		847	}
347
348		5187	void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
349		5187	registry->Register(MarkMilestone);
350		5187	registry->Register(SetupPerformanceObservers);
351		5187	registry->Register(InstallGarbageCollectionTracking);
352		5187	registry->Register(RemoveGarbageCollectionTracking);
353		5187	registry->Register(Notify);
354		5187	registry->Register(LoopIdleTime);
355		5187	registry->Register(GetTimeOrigin);
356		5187	registry->Register(GetTimeOriginTimeStamp);
357		5187	registry->Register(CreateELDHistogram);
358		5187	HistogramBase::RegisterExternalReferences(registry);
359		5187	IntervalHistogram::RegisterExternalReferences(registry);
360		5187	}
361			} // namespace performance
362			} // namespace node
363
364		5255	NODE_MODULE_CONTEXT_AWARE_INTERNAL(performance, node::performance::Initialize)
365		5187	NODE_MODULE_EXTERNAL_REFERENCE(performance,
366			node::performance::RegisterExternalReferences)