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Issue 257503003: Oilpan: Enable Oilpan by default in modules/encryptedmedia (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Created 6 years, 7 months ago
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1 <!DOCTYPE html> 1 <!DOCTYPE html>
2 <html> 2 <html>
3 <head> 3 <head>
4 <title>Test MediaKeys lifetime</title> 4 <title>Test MediaKeys lifetime</title>
5 <script src="../../resources/testharness.js"></script> 5 <script src="../../resources/testharness.js"></script>
6 <script src="../../resources/testharnessreport.js"></script> 6 <script src="../../resources/testharnessreport.js"></script>
7 <script src="../../resources/gc.js"></script> 7 <script src="../../resources/js-test.js"></script>
8 </head> 8 </head>
9 <body> 9 <body>
10 <div id="log"></div> 10 <div id="log"></div>
11 <script> 11 <script>
12 // Since MediaKeys are not ActiveDOMObjects, it is hard to 12 // Since MediaKeys are not ActiveDOMObjects, it is hard to
13 // determine when they are garbage collected. For some tests below 13 // determine when they are garbage collected. For some tests below
14 // a MediaKeySession (which is an ActiveDOMObject) is added so 14 // a MediaKeySession (which is an ActiveDOMObject) is added so
15 // there is something to count. 15 // there is something to count.
16 16
17 // MediaKeySessions remain as long as: 17 // MediaKeySessions remain as long as:
18 // JavaScript has a reference to it 18 // JavaScript has a reference to it
19 // OR (MediaKeys is around AND the session has not received a clos e() event) 19 // OR (MediaKeys is around AND the session has not received a close() event)
20 // In the tests below, we do not close any session nor keep a 20 // In the tests below, we do not close any session nor keep a
21 // Javascript reference to any session, so MediaKeySessions remain 21 // Javascript reference to any session, so MediaKeySessions remain
22 // as long as the associated MediaKeys object is around. 22 // as long as the associated MediaKeys object is around.
23 23
24 // For this test, simply verify that creating and destroying 24 var t = async_test("MediaKeys Lifetime");
25 // MediaKeys doesn't crash. 25 t.step(step1);
26 test(function()
27 {
28 // Create a MediaKeys object and free immediately.
29 var mediaKeys = new MediaKeys("org.w3.clearkey");
30 mediaKeys = null;
31 gc();
32 26
33 // Create a MediaKeys object and make sure gc doesn't free it 27 var mediaKeys;
34 // as long as we have a reference. 28 var initData;
35 mediaKeys = new MediaKeys("org.w3.clearkey"); 29 var startingActiveDOMObjectCount;
36 gc();
37 assert_equals(mediaKeys.keySystem, 'org.w3.clearkey');
38 mediaKeys = null;
39 gc();
40 30
41 }, "MediaKeys lifetime"); 31 function numActiveDOMObjectsCreated()
32 {
33 return window.internals.activeDOMObjectCount(document) - startingActiveDOMOb jectCount;
34 }
42 35
43 // For this test, create a MediaKeySession (which is an 36 // For this test, simply verify that creating and destroying
44 // ActiveDOMObject) and verify lifetime. 37 // MediaKeys doesn't crash.
45 test(function() 38 function step1() {
46 { 39 // Create a MediaKeys object and free immediately.
47 var mediaKeys; 40 mediaKeys = new MediaKeys("org.w3.clearkey");
48 var initData = new Uint8Array([0, 1, 2, 3, 4, 5, 6, 7]); 41 mediaKeys = null;
49 var startingActiveDOMObjectCount = window.internals.activeDOMObj ectCount(document); 42 asyncGC(step2);
43 }
50 44
51 function numActiveDOMObjectsCreated() 45 function step2() {
52 { 46 // Create a MediaKeys object and make sure gc doesn't free it
53 return window.internals.activeDOMObjectCount(document) - sta rtingActiveDOMObjectCount; 47 // as long as we have a reference.
54 } 48 mediaKeys = new MediaKeys("org.w3.clearkey");
49 asyncGC(step3);
50 }
55 51
56 // Create a MediaKeys object with a session. 52 function step3() {
57 mediaKeys = new MediaKeys("org.w3.clearkey"); 53 assert_equals(mediaKeys.keySystem, 'org.w3.clearkey');
58 mediaKeys.createSession("video/webm", initData); 54 mediaKeys = null;
59 assert_equals(numActiveDOMObjectsCreated(), 1); 55 asyncGC(step4);
56 }
60 57
61 // Run gc(), should not affect MediaKeys object nor the session 58 // For this test, create a MediaKeySession (which is an
62 // since we still have a reference to it. 59 // ActiveDOMObject) and verify lifetime.
63 gc(); 60 function step4() {
64 assert_equals(mediaKeys.keySystem, 'org.w3.clearkey'); 61 initData = new Uint8Array([0, 1, 2, 3, 4, 5, 6, 7]);
65 assert_equals(numActiveDOMObjectsCreated(), 1); 62 startingActiveDOMObjectCount = window.internals.activeDOMObjectCount(documen t);
66 63
67 // Drop reference to the MediaKeys object and run gc again. 64 // Create a MediaKeys object with a session.
68 // Object should be collected this time. Since 65 mediaKeys = new MediaKeys("org.w3.clearkey");
69 // MediaKeySessions remain alive as long as MediaKeys is around, 66 mediaKeys.createSession("video/webm", initData);
70 // it is possible that gc() checks the MediaKeySession object 67 assert_equals(numActiveDOMObjectsCreated(), 1);
71 // first, and doesn't collect it since MediaKeys hasn't been
72 // collected yet. Thus run gc() twice, to ensure that the
73 // unreferenced MediaKeySession object get collected.
74 mediaKeys = null;
75 gc();
76 gc();
77 assert_equals(numActiveDOMObjectsCreated(), 0);
78 68
79 }, "MediaKeys lifetime with session"); 69 // Run gc(), should not affect MediaKeys object nor the session
70 // since we still have a reference to it.
71 gc();
haraken 2014/05/27 14:51:17 Hmm, I rewrote the test using asyncGC(), but the r
72 assert_equals(mediaKeys.keySystem, 'org.w3.clearkey');
73 assert_equals(numActiveDOMObjectsCreated(), 1);
80 74
81 // For this test, create several MediaKeys (with MediaKeySessions so 75 // Drop reference to the MediaKeys object and run gc again.
82 // they can be counted) and verify lifetime. 76 // Object should be collected this time. Since
83 test(function() 77 // MediaKeySessions remain alive as long as MediaKeys is around,
84 { 78 // it is possible that gc() checks the MediaKeySession object
85 var mediaKeys; 79 // first, and doesn't collect it since MediaKeys hasn't been
86 var initData = new Uint8Array([0, 1, 2, 3, 4, 5, 6, 7]); 80 // collected yet. Thus run gc() twice, to ensure that the
87 var startingActiveDOMObjectCount = window.internals.activeDOMObj ectCount(document); 81 // unreferenced MediaKeySession object get collected.
82 mediaKeys = null;
83 asyncGC(step6);
84 }
88 85
89 function numActiveDOMObjectsCreated() 86 function step6() {
90 { 87 assert_equals(numActiveDOMObjectsCreated(), 0);
91 return window.internals.activeDOMObjectCount(document) - sta rtingActiveDOMObjectCount; 88 asyncGC(step7);
92 } 89 }
93 90
94 // Create a few MediaKeys objects. Only keep a reference to the 91 // For this test, create several MediaKeys (with MediaKeySessions so
95 // last one created. 92 // they can be counted) and verify lifetime.
96 for (var i = 0; i < 5; ++i) { 93 function step7() {
97 mediaKeys = new MediaKeys("org.w3.clearkey"); 94 initData = new Uint8Array([0, 1, 2, 3, 4, 5, 6, 7]);
98 mediaKeys.createSession("video/webm", initData); 95 startingActiveDOMObjectCount = window.internals.activeDOMObjectCount(documen t);
99 }
100 assert_equals(numActiveDOMObjectsCreated(), 5);
101 96
102 // All but the last one created should be garbage collected. 97 // Create a few MediaKeys objects. Only keep a reference to the
103 // Since MediaKeySessions remain alive as long as MediaKeys is 98 // last one created.
104 // around, it is possible that gc() checks the MediaKeySession 99 for (var i = 0; i < 5; ++i) {
105 // object first, and doesn't collect it since MediaKeys hasn't 100 mediaKeys = new MediaKeys("org.w3.clearkey");
106 // been collected yet. Thus run gc() twice, to ensure that the 101 mediaKeys.createSession("video/webm", initData);
107 // unreferenced MediaKeySession objects get collected. 102 }
108 gc(); 103 assert_equals(numActiveDOMObjectsCreated(), 5);
109 gc();
110 assert_equals(numActiveDOMObjectsCreated(), 1);
111 assert_equals(mediaKeys.keySystem, 'org.w3.clearkey');
112 104
113 // Release the last MediaKeys object created. 105 // All but the last one created should be garbage collected.
114 mediaKeys = null; 106 // Since MediaKeySessions remain alive as long as MediaKeys is
115 gc(); 107 // around, it is possible that gc() checks the MediaKeySession
116 gc(); 108 // object first, and doesn't collect it since MediaKeys hasn't
117 assert_equals(numActiveDOMObjectsCreated(), 0); 109 // been collected yet. Thus run gc() twice, to ensure that the
118 }, "Multiple MediaKeys lifetime"); 110 // unreferenced MediaKeySession objects get collected.
119 </script> 111 gc();
120 </body> 112 assert_equals(numActiveDOMObjectsCreated(), 1);
113 assert_equals(mediaKeys.keySystem, 'org.w3.clearkey');
114
115 // Release the last MediaKeys object created.
116 mediaKeys = null;
117 asyncGC(step9);
118 }
119
120 function step9() {
121 assert_equals(numActiveDOMObjectsCreated(), 0);
122 t.done();
123 }
124 </script>
125 </body>
121 </html> 126 </html>
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