persistents-with-classid

Iterates through all the persistent handles in the current isolate's heap that have class_ids and returns the ones matching specific class_id.

Installation

npm install persistents-with-classid

Example

const persistents = require('persistents-with-classid');

var iv1, iv2

function onTimeout() {
  clearInterval(iv1);
}

function Me() {}
Me.prototype.timeout = function () {
  clearInterval(iv2);
}

iv1 = setInterval(onTimeout, 20);
iv2 = setInterval(new Me().timeout, 30);

const result = persistents.collect();

function inspect(obj, depth) {
  console.error(require('util').inspect(obj, false, depth || 5, true));
}

inspect(result, 3);

Output

{ '17':
   [ Timer {
       '0': [Function: listOnTimeout],
       _idleNext:
        { _called: false,
          _idleTimeout: 20,
          _idlePrev: [Circular],
          _idleNext: [Circular],
          _idleStart: 130,
          _onTimeout: [Function: wrapper],
          _repeat: [Function: onTimeout] },
       _idlePrev:
        { _called: false,
          _idleTimeout: 20,
          _idlePrev: [Circular],
          _idleNext: [Circular],
          _idleStart: 130,
          _onTimeout: [Function: wrapper],
          _repeat: [Function: onTimeout] },
       msecs: 20 },
     Timer {
       '0': [Function: listOnTimeout],
       _idleNext:
        { _called: false,
          _idleTimeout: 30,
          _idlePrev: [Circular],
          _idleNext: [Circular],
          _idleStart: 130,
          _onTimeout: [Function: wrapper],
          _repeat: [Function] },
       [ ... ]
       msecs: 30 } ] }

API

persistents_with_classid::collect(classIds) → {Object}

Visits all persistents with class id and collects them grouped by class id.

Parameters:

Name	Type	Argument	Description
classIds	Array	<optional>	filter of class ids of Objects to call back with, defaults to async_wrap providers

Source:

• persistents-with-classid.js , lineno 35

Returns:

a hash table keyed by class ids with each value being an array of objects with that class id i.e.: { classid-x: [ object, object ] }

Type

Object

persistents_with_classid::visit(fn, classIds)

Visits all persistents with class id and calls back with the ones that the user is interested in.

Parameters:

Name	Type	Argument	Description
fn	function		function called with each Object matching the class id filter with signature: callback(classid, object)
classIds	Array	<optional>	filter of class ids of Objects to call back with, defaults to async_wrap providers

Source:

• persistents-with-classid.js , lineno 7

generated with docme

Async Wrap Providers

{ NONE: 0,
  CRYPTO: 1,
  FSEVENTWRAP: 2,
  FSREQWRAP: 3,
  GETADDRINFOREQWRAP: 4,
  GETNAMEINFOREQWRAP: 5,
  JSSTREAM: 6,
  PIPEWRAP: 7,
  PIPECONNECTWRAP: 8,
  PROCESSWRAP: 9,
  QUERYWRAP: 10,
  SHUTDOWNWRAP: 11,
  SIGNALWRAP: 12,
  STATWATCHER: 13,
  TCPWRAP: 14,
  TCPCONNECTWRAP: 15,
  TIMERWRAP: 16,
  TLSWRAP: 17,
  TTYWRAP: 18,
  UDPWRAP: 19,
  UDPSENDWRAP: 20,
  WRITEWRAP: 21,
  ZLIB: 22 }

Contributing

To submit a bug report, please create an issue at GitHub.

If you'd like to contribute code to this project, please read the CONTRIBUTING.md document.

Authors and Contributors

Thorsten Lorenz	GitHub/thlorenz	Twitter/@thlorenz

License & Copyright

persistents-with-classid is Copyright (c) 2016 NodeSource and licensed under the MIT license. All rights not explicitly granted in the MIT license are reserved. See the included LICENSE.md file for more details.