src/third_party/WebKit/LayoutTests/http/tests/workers/resources/sync-operations.js

   1 function removeAllInDirectorySync(directory)
   2 {
   3     if (!directory)
   4         return;
   5     var reader = directory.createReader();
   6     do {
   7         var entries = reader.readEntries();
   8         for (var i = 0; i < entries.length; ++i) {
   9             if (entries[i].isDirectory)
  10                 entries[i].removeRecursively();
  11             else
  12                 entries[i].remove();
  13         }
  14     } while (entries.length);
  15 }
  16
  17 onmessage = function(evt)
  18 {
  19     try {
  20         // Increase the change of getting caught doing a sync operation
  21         // by repeating the opration multiple times.
  22         for (var i = 0; i < 10; ++i) {
  23             if (evt.data == 'requestFileSystemSync') {
  24                 if (!this.webkitRequestFileSystemSync)
  25                     return;
  26                 webkitRequestFileSystemSync(this.TEMPORARY, 100);
  27             } else if (evt.data == 'fileSyncOperations') {
  28                 if (!this.webkitRequestFileSystemSync)
  29                     return;
  30                 // Do many different sync filesystem operations. If this starts crashing,
  31                 // then a simple investigation would be to isolate these commands.
  32                 var fileSystem = webkitRequestFileSystemSync(this.TEMPORARY, 100);
  33
  34                 removeAllInDirectorySync(fileSystem.root);
  35
  36                 // Stage 1 (prepare)
  37                 var a = fileSystem.root.getFile('a', {create:true});
  38                 var b = fileSystem.root.getDirectory('b', {create:true});
  39                 var c = fileSystem.root.getDirectory('c', {create:true});
  40                 var d = fileSystem.root.getFile('d', {create:true});
  41
  42                 // Stage 2 (test)
  43                 var a_copy = a.copyTo(b, 'tmp');
  44                 var metadata = a.getMetadata();
  45                 var b_parent = b.getParent();
  46                 var c_copy = c.copyTo(fileSystem.root, 'f');
  47                 var d_new = d.moveTo(fileSystem.root, 'd2');
  48                 var e = fileSystem.root.getFile('e', {create:true});
  49
  50                 // Verify
  51                 var reader = fileSystem.root.createReader();
  52                 var dirsCount = 0;
  53                 var paths = [];
  54                 do {
  55                     var entries = reader.readEntries();
  56                     for (var i = 0; i < entries.length; ++i) {
  57                     paths.push(entries[i].fullPath);
  58                     if (entries[i].isDirectory)
  59                         dirsCount++;
  60                     }
  61                 } while (entries.length);
  62
  63                 removeAllInDirectorySync(fileSystem.root);
  64             }
  65         }
  66     } catch (e) {
  67         // Purposely ignore any exceptions. Since the whole purpose of this test is to try
  68         // to interrupt the synchronous operations, they will naturally throw exceptions,
  69         // but which ones throw exception isn't determinant and we don't want random output
  70         // showing up as a console message.
  71     }
  72 }
  73
  74 postMessage('started');