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javascriptandroidhtmlweb-worker

Why was HTML5 Web Workers support removed from the Android browser in versions 2.2 and up?

I'm trying to learn something about JavaScript threading. And from a tutorial I learned about HTML5 API web worker. This API enables JavaScript multi-threading. So I start to figure out how and where can I use this feature.

Form http://caniuse.com/#search=worker

I find this API is only supported in lower version of Android browser. It is unavailable in Android 2.2 and later.

Is this result correct? If it is, is it because of the performance consideration?

On which version will this API be available?

Solution

  • from config.h of Android 2.2.

    commit 68698168e7547cc10660828f1fb82be7a8efa845

    Author: Steve Block

    Date: Wed Mar 17 14:37:19 2010 +0000

    Disable workers

    This is because V8 on Android does not have the required locking. Also disables channel messaging, which is used only with workers.

    Bug: 2522239

    Change-Id: I6cb91b4048c7e1a0351e422561625397a2e98986

    via http://code.google.com/p/android/issues/detail?id=10004#c7