File: test-net-connect-memleak.js

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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.

// Flags: --expose-gc

var common = require('../common');
var assert = require('assert');
var net = require('net');

assert(typeof gc === 'function', 'Run this test with --expose-gc');
net.createServer(function() {}).listen(common.PORT);

var before = 0;
(function() {
  // 2**26 == 64M entries
  gc();
  for (var i = 0, junk = [0]; i < 26; ++i) junk = junk.concat(junk);
  before = process.memoryUsage().rss;

  net.createConnection(common.PORT, '127.0.0.1', function() {
    assert(junk.length != 0);  // keep reference alive
    setTimeout(done, 10);
    gc();
  });
})();

function done() {
  gc();
  var after = process.memoryUsage().rss;
  var reclaimed = (before - after) / 1024;
  console.log('%d kB reclaimed', reclaimed);
  assert(reclaimed > 128 * 1024);  // It's around 256 MB on x64.
  process.exit();
}