Adblock Plus and (a little) more

Vastly improved support for multi-process Firefox · 2015-12-02 14:05 by Wladimir Palant

Firefox is switching to a multi-process architecture, it might be switched on by default once Firefox 45 is released. The current Adblock Plus releases mostly work in the multi-process mode but cause slowdowns and other issues. We’ve known that for a long time, but supporting the new multi-process architecture properly required massive changes to how Adblock Plus works. Today, I am happy to announce that the main part of this work is done and ready to be tested.

The current 2.6.13.4085 development build is a release candidate for Adblock Plus 2.7 which we plan to release on December 15, 2015. The extension core has been split up into two parts: the “parent” part which is loaded only once and the “child” part which is loaded into each Firefox process. This split affects almost all of the Adblock Plus functionality, so please report any issues you notice – both with multi-process enabled and without it.

There is a number of known issues:

  • Element hiding functionality isn’t working on Mac OS X when multi-process is enabled (bug 1187099). Given the lack of progress on Mozilla’s side, we will likely have to come up with a workaround, not for this release however.
  • Issue reporter hangs up when multi-process is enabled (issue 2809), we will address this issue in the next release.
  • Selection in the list of blockable items isn’t remembered reliably when multi-process is enabled (issue 3259), we will address this issue in the next release.
  • Diagnostics for Adblock Plus is broken (issue 3225). We should be able to address this before Adblock Plus 2.7 is released.

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