The fengmk2.github.com from fengmk2

C++ 模块的 Assertion 断言失败会导致 js 层面的调用堆栈丢失

目前还找不到具体是那段 js 代码写错了.

但是能写一个模拟重现代码:

var zlib = require('zlib');

var stream = zlib.createGzip();

stream.write('foo');
stream.close();

// Assertion failed: (!ctx->pending_close_ && "close is pending"), function Write, file ../src/node_zlib.cc, line 150.
stream.write('again');

尝新去给 node 提交 pr, 让这个判断放到 js 层面做.

^_^网站的音乐拿走了

^_^网站的音乐拿走了，见谅

nan 入门手册

最近在尝试改进 hsf 的 c++ 模块实现, 将 hessian 1.0 的 encode 和 decode 暴露出来给 js 调用.

因为需要保证 hsf 模块能在node 0.10.x 和 0.11.x 都能正常使用, 那么必须让此 c++ 模块有良好的代码兼容性.

吐血, c++ 新手还要考虑兼容性, 晴天霹雳.

org, 还好发现了 nan: A header file filled with macro and utility goodness for making add-on development for Node.js easier across versions 0.8, 0.10 and 0.11, and eventually 0.12.

示例代码

@see nan#api

codes at: nan-example

基本类型

// function showTypes() {}
NAN_METHOD(showTypes) {
  NanScope();

  // var foo;
  // var bar = null;
  v8::Local<v8::Value> foo = NanUndefined();
  v8::Local<v8::Value> bar = NanNull();
  v8::Handle<v8::Value> bar2 = NanNull();

  // var t = true;
  // var f = false;
  v8::Local<v8::Boolean> t = NanTrue();
  v8::Local<v8::Boolean> f = NanFalse();

  // var v1 = 100;
  // var v2 = 1024.123;
  // var v3 = 0.123456789;
  v8::Local<v8::Number> v1 = NanNew<v8::Number>(100);
  v8::Local<v8::Number> v2 = NanNew<v8::Number>(1024.123);
  v8::Handle<v8::Number> v3 = NanNew<v8::Number>(0.123456789);

  // var s1 = '';
  // var s2 = 'hello world';
  // var s3 = 'no ascii 还有中文';
  v8::Local<v8::String> s1 = NanNew<v8::String>("");
  v8::Local<v8::String> s2 = NanNew<v8::String>("hello world");
  v8::Local<v8::String> s3 = NanNew<v8::String>("no ascii 还有中文");

  // var now = new Date(1399273631054);
  double timestamp = 1399273631054;
  v8::Local<v8::Date> now = NanNew<v8::Date>(timestamp);

  // var result = {};
  // result['undefined'] = foo;
  // result['null'] = bar;
  // result['null2'] = bar2;
  // result['true'] = t;
  // result['false'] = f;
  // result['v1'] = v1;
  // result['v2'] = v2;
  // result['v3'] = v3;
  // result['s1'] = s1;
  // result['s2'] = s2;
  // result['s3'] = s3;
  // result.now = now;
  v8::Local<v8::Object> result = NanNew<v8::Object>();
  result->Set(NanSymbol("undefined"), foo);
  result->Set(NanSymbol("null"), bar);
  result->Set(NanSymbol("null2"), bar2);
  result->Set(NanSymbol("true"), t);
  result->Set(NanSymbol("false"), f);
  result->Set(NanSymbol("v1"), v1);
  result->Set(NanSymbol("v2"), v2);
  result->Set(NanSymbol("v3"), v3);
  result->Set(NanSymbol("s1"), s1);
  result->Set(NanSymbol("s2"), s2);
  result->Set(NanSymbol("s3"), s3);
  result->Set(NanSymbol("now"), now);

  // var arr = [];
  // arr.push(foo);
  // arr.push(bar);
  // arr.push(bar2);
  // arr.push(t);
  // arr.push(f);
  // arr.push(v1);
  // arr.push(v2);
  // arr.push(v3);
  // arr.push(s1);
  // arr.push(s2);
  // arr.push(s3);
  // arr.push(now);
  int index = 0;
  v8::Local<v8::Array> arr = NanNew<v8::Array>();
  arr->Set(index++, foo);
  arr->Set(index++, bar);
  arr->Set(index++, bar2);
  arr->Set(index++, t);
  arr->Set(index++, f);
  arr->Set(index++, v1);
  arr->Set(index++, v2);
  arr->Set(index++, v3);
  arr->Set(index++, s1);
  arr->Set(index++, s2);
  arr->Set(index++, s3);
  arr->Set(index++, now);

  result->Set(NanSymbol("array"), arr);
  result->Set(NanSymbol("array-length"), NanNew<v8::Number>(arr->Length()));

  NanReturnValue(result);
}

fengmk2 / fengmk2.github.com Goto Github PK

fengmk2.github.com's Introduction

This is MK2

fengmk2.github.com's People

Contributors

Stargazers

Watchers

Forkers

fengmk2.github.com's Issues

示例代码

基本类型

v8::Local 和 v8::Handle 的区别

v8::XXX 和 v8::XXXObject 的区别

函数

module.exports

Recommend Projects

Recommend Topics

Recommend Org