The Tor Browser: dom/browser-element/mochitest/priority/test

     1 <!DOCTYPE HTML>

     2 <html>

     3 <!--

     4 Test that the preallocated process starts up with priority BACKGROUND.

     5 -->

     6 <head>

     7   <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>

     8   <script type="application/javascript" src="../browserElementTestHelpers.js"></script>

     9   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>

    10 </head>

    11 <body>

    13 <script type="application/javascript;version=1.7">

    14 "use strict";

    16 SimpleTest.waitForExplicitFinish();

    17 browserElementTestHelpers.setEnabledPref(true);

    18 browserElementTestHelpers.addPermission();

    19 browserElementTestHelpers.enableProcessPriorityManager();

    21 var preallocationEnabledPref = null;

    22 try {

    23   preallocationEnabledPref = SpecialPowers.getBoolPref('dom.ipc.processPrelaunch.enabled');

    24 }

    25 catch(e) {

    26   preallocationEnabledPref = null;

    27 }

    29 var childID = null;

    31 var cleanedUp = false;

    32 function cleanUp()

    33 {

    34   if (cleanedUp) {

    35     return;

    36   }

    38   cleanedUp = true;

    40   if (preallocationEnabledPref === null) {

    41     SpecialPowers.clearUserPref('dom.ipc.processPrelaunch.enabled');

    42   } else {

    43     SpecialPowers.setBoolPref('dom.ipc.processPrelaunch.enabled',

    44                               preallocationEnabledPref);

    45   }

    46 }

    48 // Even if this test times out, we still want to run cleanUp so as to set the

    49 // pref back.

    50 addEventListener('unload', cleanUp);

    52 function runTest()

    53 {

    54   if (preallocationEnabledPref) {

    55     ok(false, "dom.ipc.processPrelaunch.enabled must be " +

    56               "false for this test to work.");

    57     SimpleTest.finish();

    58     return;

    59   }

    61   // Ensure that the preallocated process initially gets BACKGROUND priority.

    62   // That's it.

    63   expectProcessCreated().then(function(childID) {

    64     return expectPriorityChange(childID, 'PREALLOC', 'CPU_LOW');

    65   }).then(function() {

    66     // We need to set the pref asynchoronously or the preallocated process won't

    67     // be shut down.

    68     SimpleTest.executeSoon(function(){

    69       cleanUp();

    70       SimpleTest.finish();

    71     });

    72   });

    74   // Setting this pref to true should cause us to prelaunch a process.

    75   SpecialPowers.setBoolPref('dom.ipc.processPrelaunch.enabled', true);

    76 }

    78 addEventListener('testready', runTest);

    79 </script>

    80 </body>

    81 </html>

The Tor Browser / file revision