node/src/node_perf.cc at test-https-req-split · BruceFletcher/node · GitHub

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#include "node_internals.h"

#include "node_perf.h"

#include <vector>

namespace node {

namespace performance {

using v8::Array;

using v8::ArrayBuffer;

using v8::Context;

using v8::Function;

using v8::FunctionCallbackInfo;

using v8::FunctionTemplate;

using v8::HandleScope;

using v8::Integer;

using v8::Isolate;

using v8::Local;

using v8::Name;

using v8::Object;

using v8::ObjectTemplate;

using v8::PropertyCallbackInfo;

using v8::String;

using v8::Value;

const uint64_t timeOrigin = PERFORMANCE_NOW();

uint64_t performance_node_start;

uint64_t performance_v8_start;

uint64_t performance_last_gc_start_mark_ = 0;

v8::GCType performance_last_gc_type_ = v8::GCType::kGCTypeAll;

void PerformanceEntry::New(const FunctionCallbackInfo<Value>& args) {

Environment* env = Environment::GetCurrent(args);

Isolate* isolate = env->isolate();

Utf8Value name(isolate, args[0]);

Utf8Value type(isolate, args[1]);

uint64_t now = PERFORMANCE_NOW();

new PerformanceEntry(env, args.This(), *name, *type, now, now);

}

void PerformanceEntry::NotifyObservers(Environment* env,

PerformanceEntry* entry) {

uint32_t* observers = env->performance_state()->observers;

PerformanceEntryType type = ToPerformanceEntryTypeEnum(entry->type().c_str());

if (observers == nullptr ||

type == NODE_PERFORMANCE_ENTRY_TYPE_INVALID ||

!observers[type]) {

return;

}

Local<Context> context = env->context();

Isolate* isolate = env->isolate();

Local<Value> argv = entry->object();

env->performance_entry_callback()->Call(context,

v8::Undefined(isolate),

1, &argv).ToLocalChecked();

}

void Mark(const FunctionCallbackInfo<Value>& args) {

Environment* env = Environment::GetCurrent(args);

Local<Context> context = env->context();

Isolate* isolate = env->isolate();

Utf8Value name(isolate, args[0]);

uint64_t now = PERFORMANCE_NOW();

auto marks = env->performance_marks();

(*marks)[*name] = now;

// TODO(jasnell): Once Tracing API is fully implemented, this should

// record a trace event also.

Local<Function> fn = env->performance_entry_template();

Local<Object> obj = fn->NewInstance(context).ToLocalChecked();

new PerformanceEntry(env, obj, *name, "mark", now, now);

args.GetReturnValue().Set(obj);

}

inline uint64_t GetPerformanceMark(Environment* env, std::string name) {

auto marks = env->performance_marks();

auto res = marks->find(name);

return res != marks->end() ? res->second : 0;

}

void Measure(const FunctionCallbackInfo<Value>& args) {

Environment* env = Environment::GetCurrent(args);

Local<Context> context = env->context();

Isolate* isolate = env->isolate();

Utf8Value name(isolate, args[0]);

Utf8Value startMark(isolate, args[1]);

Utf8Value endMark(isolate, args[2]);

double* milestones = env->performance_state()->milestones;

uint64_t startTimestamp = timeOrigin;

uint64_t start = GetPerformanceMark(env, *startMark);

if (start != 0) {

startTimestamp = start;

} else {

PerformanceMilestone milestone = ToPerformanceMilestoneEnum(*startMark);

if (milestone != NODE_PERFORMANCE_MILESTONE_INVALID)

startTimestamp = milestones[milestone];

}

uint64_t endTimestamp = GetPerformanceMark(env, *endMark);

if (endTimestamp == 0) {

PerformanceMilestone milestone = ToPerformanceMilestoneEnum(*endMark);

if (milestone != NODE_PERFORMANCE_MILESTONE_INVALID)

endTimestamp = milestones[milestone];

}

if (endTimestamp < startTimestamp)

endTimestamp = startTimestamp;

// TODO(jasnell): Once Tracing API is fully implemented, this should

// record a trace event also.

Local<Function> fn = env->performance_entry_template();

Local<Object> obj = fn->NewInstance(context).ToLocalChecked();

new PerformanceEntry(env, obj, *name, "measure",

startTimestamp, endTimestamp);

args.GetReturnValue().Set(obj);

}

void GetPerformanceEntryName(const Local<String> prop,

const PropertyCallbackInfo<Value>& info) {

Isolate* isolate = info.GetIsolate();

PerformanceEntry* entry;

ASSIGN_OR_RETURN_UNWRAP(&entry, info.Holder());

info.GetReturnValue().Set(

String::NewFromUtf8(isolate, entry->name().c_str(), String::kNormalString));

}

void GetPerformanceEntryType(const Local<String> prop,

const PropertyCallbackInfo<Value>& info) {

Isolate* isolate = info.GetIsolate();

PerformanceEntry* entry;

ASSIGN_OR_RETURN_UNWRAP(&entry, info.Holder());

info.GetReturnValue().Set(

String::NewFromUtf8(isolate, entry->type().c_str(), String::kNormalString));

}

void GetPerformanceEntryStartTime(const Local<String> prop,

const PropertyCallbackInfo<Value>& info) {

PerformanceEntry* entry;

ASSIGN_OR_RETURN_UNWRAP(&entry, info.Holder());

info.GetReturnValue().Set(entry->startTime());

}

void GetPerformanceEntryDuration(const Local<String> prop,

const PropertyCallbackInfo<Value>& info) {

PerformanceEntry* entry;

ASSIGN_OR_RETURN_UNWRAP(&entry, info.Holder());

info.GetReturnValue().Set(entry->duration());

}

void MarkMilestone(const FunctionCallbackInfo<Value>& args) {

Environment* env = Environment::GetCurrent(args);

Local<Context> context = env->context();

double* milestones = env->performance_state()->milestones;

PerformanceMilestone milestone =

static_cast<PerformanceMilestone>(

args[0]->Int32Value(context).ToChecked());

if (milestone != NODE_PERFORMANCE_MILESTONE_INVALID) {

milestones[milestone] = PERFORMANCE_NOW();

}

void SetupPerformanceObservers(const FunctionCallbackInfo<Value>& args) {

Environment* env = Environment::GetCurrent(args);

CHECK(args[0]->IsFunction());

env->set_performance_entry_callback(args[0].As<Function>());

}

void PerformanceGCCallback(uv_async_t* handle) {

PerformanceEntry::Data* data =

static_cast<PerformanceEntry::Data*>(handle->data);

Environment* env = data->env();

Isolate* isolate = env->isolate();

HandleScope scope(isolate);

Local<Context> context = env->context();

Context::Scope context_scope(context);

Local<Function> fn;

Local<Object> obj;

PerformanceGCKind kind = static_cast<PerformanceGCKind>(data->data());

uint32_t* observers = env->performance_state()->observers;

if (!observers[NODE_PERFORMANCE_ENTRY_TYPE_GC]) {

goto cleanup;

}

fn = env->performance_entry_template();

obj = fn->NewInstance(context).ToLocalChecked();

obj->Set(context,

FIXED_ONE_BYTE_STRING(isolate, "kind"),

Integer::New(isolate, kind)).FromJust();

new PerformanceEntry(env, obj, data);

cleanup:

delete data;

auto closeCB = [](uv_handle_t* handle) { delete handle; };

uv_close(reinterpret_cast<uv_handle_t*>(handle), closeCB);

}

void MarkGarbageCollectionStart(Isolate* isolate,

v8::GCType type,

v8::GCCallbackFlags flags) {

performance_last_gc_start_mark_ = PERFORMANCE_NOW();

performance_last_gc_type_ = type;

}

void MarkGarbageCollectionEnd(Isolate* isolate,

v8::GCType type,

v8::GCCallbackFlags flags,

void* data) {

Environment* env = static_cast<Environment*>(data);

uv_async_t* async = new uv_async_t(); // coverity[leaked_storage]

if (uv_async_init(env->event_loop(), async, PerformanceGCCallback))

return delete async;

async->data =

new PerformanceEntry::Data(env, "gc", "gc",

performance_last_gc_start_mark_,

PERFORMANCE_NOW(), type);

CHECK_EQ(0, uv_async_send(async));

}

inline void SetupGarbageCollectionTracking(Environment* env) {

env->isolate()->AddGCPrologueCallback(MarkGarbageCollectionStart);

env->isolate()->AddGCEpilogueCallback(MarkGarbageCollectionEnd,

static_cast<void*>(env));

}

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;

}

void TimerFunctionCall(const FunctionCallbackInfo<Value>& args) {

Isolate* isolate = args.GetIsolate();

HandleScope scope(isolate);

Environment* env = Environment::GetCurrent(isolate);

Local<Context> context = env->context();

Local<Function> fn = args.Data().As<Function>();

size_t count = args.Length();

size_t idx;

std::vector<Local<Value>> call_args;

for (size_t i = 0; i < count; ++i) {

call_args.push_back(args[i]);

}

Utf8Value name(isolate, GetName(fn));

uint64_t start;

uint64_t end;

v8::TryCatch try_catch(isolate);

if (args.IsConstructCall()) {

start = PERFORMANCE_NOW();

v8::MaybeLocal<Object> ret = fn->NewInstance(context,

call_args.size(),

call_args.data());

end = PERFORMANCE_NOW();

if (ret.IsEmpty()) {

try_catch.ReThrow();

return;

}

args.GetReturnValue().Set(ret.ToLocalChecked());

} else {

start = PERFORMANCE_NOW();

v8::MaybeLocal<Value> ret = fn->Call(context,

args.This(),

call_args.size(),

call_args.data());

end = PERFORMANCE_NOW();

if (ret.IsEmpty()) {

try_catch.ReThrow();

return;

}

args.GetReturnValue().Set(ret.ToLocalChecked());

}

uint32_t* observers = env->performance_state()->observers;

if (!observers[NODE_PERFORMANCE_ENTRY_TYPE_FUNCTION])

return;

Local<Function> ctor = env->performance_entry_template();

v8::MaybeLocal<Object> instance = ctor->NewInstance(context);

Local<Object> obj = instance.ToLocalChecked();

for (idx = 0; idx < count; idx++) {

obj->Set(context, idx, args[idx]).ToChecked();

}

new PerformanceEntry(env, obj, *name, "function", start, end);

}

void Timerify(const FunctionCallbackInfo<Value>& args) {

Environment* env = Environment::GetCurrent(args);

Local<Context> context = env->context();

CHECK(args[0]->IsFunction());

CHECK(args[1]->IsNumber());

Local<Function> fn = args[0].As<Function>();

int length = args[1]->IntegerValue(context).ToChecked();

Local<Function> wrap =

Function::New(context, TimerFunctionCall, fn, length).ToLocalChecked();

args.GetReturnValue().Set(wrap);

}

void Init(Local<Object> target,

Local<Value> unused,

Local<Context> context) {

Environment* env = Environment::GetCurrent(context);

Isolate* isolate = env->isolate();

performance_state* state = env->performance_state();

auto state_ab = ArrayBuffer::New(isolate, state, sizeof(*state));

#define SET_STATE_TYPEDARRAY(name, type, field) \

target->Set(context, \

FIXED_ONE_BYTE_STRING(isolate, (name)), \

type::New(state_ab, \

offsetof(performance_state, field), \

arraysize(state->field))) \

.FromJust()

SET_STATE_TYPEDARRAY("observerCounts", v8::Uint32Array, observers);

SET_STATE_TYPEDARRAY("milestones", v8::Float64Array, milestones);

#undef SET_STATE_TYPEDARRAY

Local<String> performanceEntryString =

FIXED_ONE_BYTE_STRING(isolate, "PerformanceEntry");

Local<FunctionTemplate> pe = env->NewFunctionTemplate(PerformanceEntry::New);

pe->InstanceTemplate()->SetInternalFieldCount(1);

pe->SetClassName(performanceEntryString);

Local<ObjectTemplate> ot = pe->InstanceTemplate();

ot->SetAccessor(env->name_string(), GetPerformanceEntryName);

ot->SetAccessor(FIXED_ONE_BYTE_STRING(isolate, "entryType"),

GetPerformanceEntryType);

ot->SetAccessor(FIXED_ONE_BYTE_STRING(isolate, "startTime"),

GetPerformanceEntryStartTime);

ot->SetAccessor(FIXED_ONE_BYTE_STRING(isolate, "duration"),

GetPerformanceEntryDuration);

Local<Function> fn = pe->GetFunction();

target->Set(performanceEntryString, fn);

env->set_performance_entry_template(fn);

env->SetMethod(target, "mark", Mark);

env->SetMethod(target, "measure", Measure);

env->SetMethod(target, "markMilestone", MarkMilestone);

env->SetMethod(target, "setupObservers", SetupPerformanceObservers);

env->SetMethod(target, "timerify", Timerify);

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);

#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

v8::PropertyAttribute attr =

static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete);

target->DefineOwnProperty(context,

FIXED_ONE_BYTE_STRING(isolate, "timeOrigin"),

v8::Number::New(isolate, timeOrigin / 1e6),

attr).ToChecked();

target->DefineOwnProperty(context,

env->constants_string(),

constants,

attr).ToChecked();

SetupGarbageCollectionTracking(env);

}

} // namespace performance

} // namespace node

NODE_MODULE_CONTEXT_AWARE_BUILTIN(performance, node::performance::Init)

node/src/node_perf.cc at test-https-req-split · BruceFletcher/node · GitHub

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