node/src/node_counters.cc at master · DynamicAnt/node · GitHub

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// 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.

#include "node_counters.h"

#include "uv.h"

#include "env.h"

#include "env-inl.h"

#include <string.h>

namespace node {

using v8::FunctionCallbackInfo;

using v8::FunctionTemplate;

using v8::GCCallbackFlags;

using v8::GCType;

using v8::HandleScope;

using v8::Isolate;

using v8::Local;

using v8::Object;

using v8::String;

using v8::Value;

static uint64_t counter_gc_start_time;

static uint64_t counter_gc_end_time;

void COUNTER_NET_SERVER_CONNECTION(const FunctionCallbackInfo<Value>&) {

NODE_COUNT_SERVER_CONN_OPEN();

}

void COUNTER_NET_SERVER_CONNECTION_CLOSE(const FunctionCallbackInfo<Value>&) {

NODE_COUNT_SERVER_CONN_CLOSE();

}

void COUNTER_HTTP_SERVER_REQUEST(const FunctionCallbackInfo<Value>&) {

NODE_COUNT_HTTP_SERVER_REQUEST();

}

void COUNTER_HTTP_SERVER_RESPONSE(const FunctionCallbackInfo<Value>&) {

NODE_COUNT_HTTP_SERVER_RESPONSE();

}

void COUNTER_HTTP_CLIENT_REQUEST(const FunctionCallbackInfo<Value>&) {

NODE_COUNT_HTTP_CLIENT_REQUEST();

}

void COUNTER_HTTP_CLIENT_RESPONSE(const FunctionCallbackInfo<Value>&) {

NODE_COUNT_HTTP_CLIENT_RESPONSE();

}

static void counter_gc_start(Isolate* isolate,

GCType type,

GCCallbackFlags flags) {

counter_gc_start_time = NODE_COUNT_GET_GC_RAWTIME();

}

static void counter_gc_done(Isolate* isolate,

GCType type,

GCCallbackFlags flags) {

uint64_t endgc = NODE_COUNT_GET_GC_RAWTIME();

if (endgc != 0) {

uint64_t totalperiod = endgc - counter_gc_end_time;

uint64_t gcperiod = endgc - counter_gc_start_time;

if (totalperiod > 0) {

unsigned int percent = static_cast<unsigned int>(

(gcperiod * 100) / totalperiod);

NODE_COUNT_GC_PERCENTTIME(percent);

counter_gc_end_time = endgc;

}

void InitPerfCounters(Environment* env, Local<Object> target) {

HandleScope scope(env->isolate());

static struct {

const char* name;

void (*func)(const FunctionCallbackInfo<Value>&);

} tab[] = {

#define NODE_PROBE(name) #name, name

{ NODE_PROBE(COUNTER_NET_SERVER_CONNECTION) },

{ NODE_PROBE(COUNTER_NET_SERVER_CONNECTION_CLOSE) },

{ NODE_PROBE(COUNTER_HTTP_SERVER_REQUEST) },

{ NODE_PROBE(COUNTER_HTTP_SERVER_RESPONSE) },

{ NODE_PROBE(COUNTER_HTTP_CLIENT_REQUEST) },

{ NODE_PROBE(COUNTER_HTTP_CLIENT_RESPONSE) }

#undef NODE_PROBE

};

for (size_t i = 0; i < arraysize(tab); i++) {

Local<String> key = OneByteString(env->isolate(), tab[i].name);

Local<Value> val = env->NewFunctionTemplate(tab[i].func)->GetFunction();

target->Set(key, val);

}

// Only Windows performance counters supported

// To enable other OS, use conditional compilation here

InitPerfCountersWin32();

// init times for GC percent calculation and hook callbacks

counter_gc_start_time = NODE_COUNT_GET_GC_RAWTIME();

counter_gc_end_time = counter_gc_start_time;

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

env->isolate()->AddGCEpilogueCallback(counter_gc_done);

}

void TermPerfCounters(Local<Object> target) {

// Only Windows performance counters supported

// To enable other OS, use conditional compilation here

TermPerfCountersWin32();

}

} // namespace node

node/src/node_counters.cc at master · DynamicAnt/node · GitHub

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