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Display the graph created by cycle collector.
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Latest commit 1d9e74d May 11, 2012 @janodvarko Merge pull request #8 from mihaisucan/master
the simple wrapper for mochitests from mihaisucan/master
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simple-wrapper.js style changes as requested by Honza May 7, 2012

README.md

CCDump

CCDump is a Firefox extension which display object graph created by cycle collector. After installation, open:

about:ccdump

More Info

  • Bug 726346 - Implement a version of nsICycleCollectorListener for devtools

Mochitests

You can use ccdump to dump the object graph into a JSON file within Mozilla's mochitests. This is useful for debugging memory leaks in tests. Once you have the JSON you can import it into the addon UI for graph inspection.

Example usage:

function call_ccdump()
{
  let scope = {};
  let ccdump_path = "file:///home/mihai/src/ccdump";
  Services.scriptloader.loadSubScript(ccdump_path + "/simple-wrapper.js", scope);
  let ccdump = new scope.ccdump_wrapper({
    global: scope,
    ccdump_path: ccdump_path,
  });
  ccdump.save("/home/mihai/ccdump-dbg-memleaks-" + Date.now(),
    function _onCcdumpSave() {
      ccdump.clear();
      ccdump = scope = null;
      executeSoon(finish);
    });
}

Instead of calling finish() in your test, invoke call_ccdump().

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