| OLD | NEW |
|---|
| (Empty) |
| 1 <!doctype html> | |
| 2 <meta charset="utf-8"> | |
| 3 <meta name="timeout" content="long"> | |
| 4 <title>IndexedDB: Parallel iteration of multiple overlapping cursors</title> | |
| 5 <link rel="author" href="pwnall@chromium.org" title="Victor Costan"> | |
| 6 <script src="/resources/testharness.js"></script> | |
| 7 <script src="/resources/testharnessreport.js"></script> | |
| 8 <script src="support-promises.js"></script> | |
| 9 <script src="interleaved-cursors-support.js"></script> | |
| 10 <script> | |
| 11 'use strict'; | |
| 12 | |
| 13 // Number of objects that each iterator goes over. | |
| 14 const itemCount = 2; | |
| 15 | |
| 16 // Ratio of small objects to large objects. | |
| 17 const largeObjectRatio = 5; | |
| 18 | |
| 19 function objectKey(cursorIndex, itemIndex) { | |
| 20 const itemString = itemIndex.toString().padStart(5, '0'); | |
| 21 return `key-${itemString}`; | |
| 22 } | |
| 23 | |
| 24 function objectValue(cursorIndex, itemIndex) { | |
| 25 if ((itemCount + itemIndex) % largeObjectRatio === 0) | |
| 26 return largeObjectValue(0, itemIndex); | |
| 27 return ['small', itemIndex]; | |
| 28 } | |
| 29 | |
| 30 // Reads all the cursors in parallel. Returns a promise that resolves when the | |
| 31 // reading is done. | |
| 32 function parallelCursors(testCase, store, cursorCount) { | |
| 33 const promises = []; | |
| 34 const cursors = new CursorBank(testCase, store, cursorCount); | |
| 35 | |
| 36 for (let cursorIndex = 0; cursorIndex < cursorCount; ++cursorIndex) { | |
| 37 const promise = new Promise((resolve, reject) => { | |
| 38 let callback = resolve; | |
| 39 for (let itemIndex = itemCount; itemIndex >= 1; --itemIndex) { | |
| 40 callback = cursors.continueCursor.bind( | |
| 41 cursors, cursorIndex, itemIndex, callback); | |
| 42 } | |
| 43 cursors.openCursor(cursorIndex, callback); | |
| 44 }); | |
| 45 promises.push(promise); | |
| 46 } | |
| 47 return Promise.all(promises); | |
| 48 } | |
| 49 | |
| 50 for (let cursorCount of [1, 10, 100, 1000, 10000]) { | |
| 51 promise_test(testCase => { | |
| 52 return createDatabase(testCase, (database, transaction) => { | |
| 53 const store = database.createObjectStore('cache', { keyPath: 'key' }); | |
| 54 }).then(database => { | |
| 55 return populateTestStore(testCase, database, 1).then(() => database); | |
| 56 }).then(database => { | |
| 57 database.close(); | |
| 58 }).then(() => { | |
| 59 return openDatabase(testCase); | |
| 60 }).then(database => { | |
| 61 const transaction = database.transaction('cache', 'readonly'); | |
| 62 transaction.onabort = () => { reject(transaction.error); }; | |
| 63 | |
| 64 const store = transaction.objectStore('cache'); | |
| 65 return parallelCursors(testCase, store, cursorCount, itemCount).then( | |
| 66 () => database); | |
| 67 }).then(database => { | |
| 68 database.close(); | |
| 69 }); | |
| 70 }, `${cursorCount} cursors`); | |
| 71 } | |
| 72 | |
| 73 </script> | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2803563002:
Revert of More thorough overlapping cursor tests. (Closed)
