third_party/WebKit/LayoutTests/fast/workers/resources/worker-util.js

   1 // Useful utilities for worker tests
   2
   3 function log(message)
   4 {
   5     document.getElementById("result").innerHTML += message + "<br>";
   6 }
   7
   8 function waitUntilWorkerThreadsExit(callback)
   9 {
  10     waitUntilThreadCountMatches(callback, 0);
  11 }
  12
  13 function waitUntilThreadCountMatches(callback, count)
  14 {
  15     // When running in a browser, just wait for one second then call the callback.
  16     if (!window.testRunner) {
  17         setTimeout(function() { gc(); callback(); }, 1000);
  18         return;
  19     }
  20
  21     if (internals.workerThreadCount == count) {
  22         // Worker threads have exited.
  23         callback();
  24     } else {
  25         // Poll until worker threads have been GC'd/exited.
  26         // Force a GC with a bunch of allocations to try to scramble the stack and force worker objects to be collected.
  27         gc(true);
  28         setTimeout(function() { waitUntilThreadCountMatches(callback, count); }, 10);
  29     }
  30 }
  31
  32 function ensureThreadCountMatches(callback, count)
  33 {
  34     // Just wait until the thread count matches, then wait another 100ms to see if it changes, then fire the callback.
  35     waitUntilThreadCountMatches(function() {
  36             setTimeout(function() { waitUntilThreadCountMatches(callback, count); }, 100);
  37         }, count);
  38 }
  39
  40 function done()
  41 {
  42     if (window.debug)
  43         debug('<br><span class="pass">TEST COMPLETE</span>');
  44     else
  45         log("DONE");
  46
  47     // Call notifyDone via the queue so any pending console messages/exceptions are written out first.
  48     setTimeout(function() {
  49         if (window.testRunner)
  50             testRunner.notifyDone();
  51     }, 0);
  52 }