javascript - Life-time of obect urls with web-workers -


say start worker , creates object url blob:

//running in page window var worker = new worker(workerscripturl);   //running in worker var u = rootscope.url || rootscope.webkiturl; var objurl = u.createobjecturl(blob);

...now (because we're lazy) don't ever call:

u.revokeobjecturl(objurl);

and instead in code started worker, call:

worker.terminate();

will kill object url, or remain duration of original page window?

ok, in absence of answer, decided test myself:

var u = window.url || window.webkiturl; var f='('+  function(rootscope){     var u = rootscope.url || rootscope.webkiturl;     var blob=new blob([ "hello world!" ], { type: 'text/plain' } );     var bloburl = u.createobjecturl( blob) ;     rootscope.postmessage(bloburl); }.tostring()+  ')(this)'; console.log(f); // build worker anonymous function body var bloburl = u.createobjecturl( new blob([ f ],                                            { type: 'application/javascript' } ) );  var worker = new worker( bloburl ); worker.onmessage=function(e){     worker.terminate();     settimeout(function(){         var xhr = new xmlhttprequest();         xhr.open('get', e.data, false);         xhr.send(null);         console.log( xhr.responsetext );    //prints "hello world!"      },5000); };  // won't needing anymore u.revokeobjecturl( bloburl );

as can seen, 5 seconds after terminate web-worker, can still read object url created.


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