Gitiles
Code Review Sign In
gerrit-public.fairphone.software / fp2-dev / platform / external / chromium_org / third_party / WebKit / eac6af9a72cf9c23b628f76bd7593f8abdae2c41 / . / ManualTests / typed-array-memory.html
blob: bc8d89e1bb9f6fb598c641c9e6852db7fae94281 [file] [log] [blame]
Torne (Richard Coles)5c87bf82012-11-14 11:46:17 +0000[diff] [blame]1<html>
2<head>
3<title>ArrayBuffer External Memory test</title>
4<script>
5
6var log;
7function print(message, color)
8{
9 var paragraph = document.createElement("div");
10 paragraph.appendChild(document.createTextNode(message));
11 paragraph.style.fontFamily = "monospace";
12 if (color)
13 paragraph.style.color = color;
14 log.appendChild(paragraph);
15}
16
17function pass(msg)
18{
19 print("PASS: " + msg, "green");
20}
21
22function fail(msg)
23{
24 print("FAIL: " + msg, "red");
25}
26
27var KB = 1024;
28var MB = KB * KB;
29var noise = KB;
30
31function externalMemory() {
32 return getV8Statistics().amount_of_external_allocated_memory;
33}
34
35function collectGarbage() {
36 for (var i = 0; i < 10; i++) gc();
37}
38
39function allocationsThatIncreaseExternalMemory() {
40 function test(expression) {
41 var before = externalMemory();
42 (function () { eval(expression); }) ();
43 var now = externalMemory();
44 if (now < before + MB - noise) {
45 fail(expression + " did not increase the amount of external memory (" +
46 before + ", " + now + ").");
47 } else {
48 pass(expression + " increased the amount of external memory.");
49 }
50 collectGarbage();
51 var after = externalMemory();
52 if (after > now + noise) {
53 fail("Garbage collection after " + expression +
54 " did not return the amount of external memory to the initial value (" +
55 now + ", " + after + ").");
56 } else {
57 pass("Garbage collection after " + expression +
58 " returned the amount of external memory to the initial value.");
59 }
60 }
61
62 test("(new ArrayBuffer(MB))");
63 test("(new Float32Array(MB))");
64 test("(new Float64Array(MB))");
65 test("(new Int8Array(MB))");
66 test("(new Int16Array(MB))");
67 test("(new Int32Array(MB))");
68 test("(new Uint8Array(MB))");
69 test("(new Uint16Array(MB))");
70 test("(new Uint32Array(MB))");
71 var largeJSArray = [];
72 for (var i = 0; i < MB; i++) largeJSArray.push(i);
73 test("(new Float32Array(largeJSArray))");
74 test("(new Float64Array(largeJSArray))");
75 test("(new Int8Array(largeJSArray))");
76 test("(new Int16Array(largeJSArray))");
77 test("(new Int32Array(largeJSArray))");
78 test("(new Uint8Array(largeJSArray))");
79 test("(new Uint16Array(largeJSArray))");
80 test("(new Uint32Array(largeJSArray))");
81 var int8Array = new Int8Array(MB);
82 test("(new Float32Array(int8Array))");
83 test("(new Float64Array(int8Array))");
84 test("(new Int8Array(int8Array))");
85 test("(new Int16Array(int8Array))");
86 test("(new Int32Array(int8Array))");
87 test("(new Uint8Array(int8Array))");
88 test("(new Uint16Array(int8Array))");
89 test("(new Uint32Array(int8Array))");
90}
91
92
93function allocationsThatDoNotChangeExternalMemory() {
94 function test(expression) {
95 var before = externalMemory();
96 (function () { eval(expression); }) ();
97 var now = externalMemory();
98 if (now > before + noise) {
99 fail(expression + " increased the amount of external memory (" + before + ", " + now + ").");
100 } else {
101 pass(expression + " did not increase the amount of external memory.");
102 }
103 collectGarbage();
104 var after = externalMemory();
105 if (after < now - noise) {
106 fail("Garbage collection after " + expression + " decreased the amount of external memory (" +
107 now + ", " + after + ").");
108 } else {
109 pass("Garbage collection after " + expression +
110 " did not decrease the amount of external memory.");
111 }
112 }
113 var arrayBuffer = new ArrayBuffer(MB);
114 test("(new Float32Array(arrayBuffer))");
115 test("(new Float64Array(arrayBuffer))");
116 test("(new Int8Array(arrayBuffer))");
117 test("(new Int16Array(arrayBuffer))");
118 test("(new Int32Array(arrayBuffer))");
119 test("(new Uint8Array(arrayBuffer))");
120 test("(new Uint16Array(arrayBuffer))");
121 test("(new Uint32Array(arrayBuffer))");
122 var int8Array = new Int8Array(MB);
123 test("(new Float32Array(int8Array.buffer))");
124 test("(new Float64Array(int8Array.buffer))");
125 test("(new Int8Array(int8Array.buffer))");
126 test("(new Int16Array(int8Array.buffer))");
127 test("(new Int32Array(int8Array.buffer))");
128 test("(new Uint8Array(int8Array.buffer))");
129 test("(new Uint16Array(int8Array.buffer))");
130 test("(new Uint32Array(int8Array.buffer))");
131}
132
133
134function transfersThatDecreaseExternalMemory() {
135 var workerSource =
136"function externalMemory() {\n" +
137" return getV8Statistics().amount_of_external_allocated_memory;\n" +
138"}\n" +
Torne (Richard Coles)926b0012013-03-28 15:32:48 +0000[diff] [blame]139"var KB = 1024;\n" +
140"var MB = KB * KB;\n" +
141"var noise = KB;\n" +
Torne (Richard Coles)5c87bf82012-11-14 11:46:17 +0000[diff] [blame]142"self.onmessage = function(e) {\n" +
Torne (Richard Coles)926b0012013-03-28 15:32:48 +0000[diff] [blame]143" var before = externalMemory();\n" +
144" e.data;\n" +
Torne (Richard Coles)5c87bf82012-11-14 11:46:17 +0000[diff] [blame]145" var after = externalMemory();\n" +
Torne (Richard Coles)926b0012013-03-28 15:32:48 +0000[diff] [blame]146" if (after > before + MB - noise) {\n" +
147" self.postMessage('PASS: Amount of external memory increased.');\n" +
148" } else {\n" +
149" self.postMessage('FAIL: Amount of external memory did not increase.');\n" +
150" }\n" +
Torne (Richard Coles)5c87bf82012-11-14 11:46:17 +0000[diff] [blame]151"}\n";
152
153 var blob = new Blob([workerSource]);
154 var worker = new Worker(window.webkitURL.createObjectURL(blob));
155 worker.onmessage = function (e) {
156 print("message from worker: " + e.data, "blue");
157 }
158 function test(expression)
159 {
160 var buffer = eval(expression);
161 try {
162 var before = externalMemory();
Torne (Richard Coles)926b0012013-03-28 15:32:48 +0000[diff] [blame]163 worker.postMessage(buffer, [buffer]);
Torne (Richard Coles)5c87bf82012-11-14 11:46:17 +0000[diff] [blame]164 var now = externalMemory();
165 if (now > before - MB + noise) {
166 fail("Transfer of " + expression + " did not decrease the amount of external memory (" +
167 before + ", " + now + ").");
168 } else {
169 pass("Transfer of " + expression + " decreased the amount of external memory.");
170 }
171 collectGarbage();
172 var after = externalMemory();
173 if (after < now - noise) {
174 fail("Garbage collection after transfer of " + expression +
175 " decreased the amount of external memory (" + now + ", " + after + ").");
176 } else {
177 pass("Garbage collection after transfer of " + expression +
178 " did not decrease the amount of external memory.");
179 }
180 } catch (e) {
181 fail("Transfer of " + name + ": could not webkitPostMessage: " + e);
182 return false;
183 }
184 return true;
185 }
186 test("(new ArrayBuffer(MB))");
187 test("(new Float32Array(MB)).buffer");
188 test("(new Float64Array(MB)).buffer");
189 test("(new Int8Array(MB)).buffer");
190 test("(new Int16Array(MB)).buffer");
191 test("(new Int32Array(MB)).buffer");
192 test("(new Uint8Array(MB)).buffer");
193 test("(new Uint16Array(MB)).buffer");
194 test("(new Uint32Array(MB)).buffer");
195}
196
197
198function runAll() {
199 log = document.getElementById("log1");
200 if (typeof gc == "undefined" || typeof getV8Statistics == "undefined") {
201 print("Run chrome browser with --js-flags='--expose_gc --track_gc_object_stats'", "red");
202 } else {
203 allocationsThatIncreaseExternalMemory();
204 collectGarbage();
205 allocationsThatDoNotChangeExternalMemory();
206 collectGarbage();
207 log = document.getElementById("log2");
208 transfersThatDecreaseExternalMemory();
209 collectGarbage();
210 }
211}
212
213</script>
214</head>
215<body onload="runAll()">
216<p>This test checks that allocation and deallocation of typed arrays correctly
217adjusts the amount of external memory in V8.</p>
218<div id='log1'></div>
219<p>This test checks that transfer of an array buffer to worker decreases amount of
220external memory in the main V8 isolate.</p>
221<div id='log2'></div>
222</body>
223</html>