runInContext memory leak

[astoilkov]

I have been struggling for days with a memory leak with runInContext. I have tried to isolate the problem with no success. The problem is that the script that I am executing is around 14k lines and there is no way to understand from where in the script is the problem. What I have understood is that the problem comes from these 14k lines because when I remove them and execute simple code it's all fine.

  function executeCode(browserEnv, html, code) {
    var context = vm.createContext(browserEnv.getObject());
    var script = vm.createScript(code);

    extend(context, {
      server: {
        html: html,
        data: {},
        rendered: '',
        applications: []
      },
      require: require
    });

    script.runInContext(context);
  }

I am not sure how we could go about investigating the problem. If you have any suggestions I can cooperate fully.

Note: I didn't know if I should create an issue here or in contextify.

[Fishrock123]

Which version of io.js are you running?

io.js < 1.5.1 had a memory leak in TLSWrap, if you are using TLS / HTTPS, see #1075 (there's also a small other leak we are still investigating there, possibly related to smalloc).

[bnoordhuis]

Do you have a simple test case (i.e. one that doesn't depend on third-party modules) that reproduces the issue? If so, I'll be happy to take a look.

[astoilkov]

The most isolated test case I have been able to replicate the problem is by running the library I am developing with runInContext. However, I have said the library is 14k lines so it is not as I call it simple. If you think you have chance of finding the problem in such an example I will upload an example somewhere and provide you a link.

[bnoordhuis]

As long as it doesn't have other dependencies, I can at least try to profile it and see if something stands out.

[Fishrock123]

Reopen if we have get a core-only test case. As for debugging what you have further, maybe valgrind can help?