- From: Ian Hickson via cvs-syncmail <cvsmail@w3.org>
- Date: Mon, 07 Feb 2011 22:16:34 +0000
- To: public-html-commits@w3.org
Update of /sources/public/html5/workers
In directory hutz:/tmp/cvs-serv28826
Modified Files:
Overview.html
Log Message:
Comment out an example that uses startConversation(), which isn't yet in the spec (it's commented out also). (whatwg r5838)
Index: Overview.html
===================================================================
RCS file: /sources/public/html5/workers/Overview.html,v
retrieving revision 1.274
retrieving revision 1.275
diff -u -d -r1.274 -r1.275
--- Overview.html 7 Feb 2011 21:41:08 -0000 1.274
+++ Overview.html 7 Feb 2011 22:16:32 -0000 1.275
@@ -346,8 +346,7 @@
<li><a href="#worker-used-for-background-i-o"><span class="secno">1.2.3 </span>Worker used for background I/O</a></li>
<li><a href="#shared-workers-introduction"><span class="secno">1.2.4 </span>Shared workers introduction</a></li>
<li><a href="#shared-state-using-a-shared-worker"><span class="secno">1.2.5 </span>Shared state using a shared worker</a></li>
- <li><a href="#delegation"><span class="secno">1.2.6 </span>Delegation</a></li>
- <li><a href="#providing-libraries"><span class="secno">1.2.7 </span>Providing libraries</a></ol></ol></li>
+ <li><a href="#delegation"><span class="secno">1.2.6 </span>Delegation</a></ol></ol></li>
<li><a href="#conformance-requirements"><span class="secno">2 </span>Conformance requirements</a>
<ol>
<li><a href="#dependencies"><span class="secno">2.1 </span>Dependencies</a></ol></li>
@@ -922,8 +921,18 @@
close();
}</pre><p>They receive two numbers in two events, perform the computation
for the range of numbers thus specified, and then report the result
- back to the parent.<p><a href="http://www.whatwg.org/demos/workers/multicore/page.html">View this example online</a>.<h4 id="providing-libraries"><span class="secno">1.2.7 </span>Providing libraries</h4><p><i>This section is non-normative.</i><p>Suppose that a cryptography library is made available that
- provides three tasks:<dl><dt>Generate a public/private key pair</dt>
+ back to the parent.<p><a href="http://www.whatwg.org/demos/workers/multicore/page.html">View this example online</a>.</p><!--(this uses startConversation, which is currently commented out)
+
+ <h4>Providing libraries</h4>
+
+ <!- -END dev-html- -><p><i>This section is non-normative.</i></p><!- -START dev-html- ->
+
+ <p>Suppose that a cryptography library is made available that
+ provides three tasks:</p>
+
+ <dl>
+
+ <dt>Generate a public/private key pair</dt>
<dd>Takes a port, on which it will send two messages, first the
public key and then the private key.</dd>
@@ -944,7 +953,11 @@
channel as the plaintext. The user can close the port when it is
done decrypting content.</dd>
- </dl><p>The library itself is as follows:<pre>function handleMessage(e) {
+ </dl>
+
+ <p>The library itself is as follows:</p>
+
+ <pre>function handleMessage(e) {
if (e.data == "genkeys")
genkeys(e.ports[0]);
else if (e.data == "encrypt")
@@ -1002,13 +1015,19 @@
function _decrypt(k, s) {
return s.substr(s.indexOf(' ')+1);
-}</pre><p>Note that the crypto functions here are just stubs and don't do
- real cryptography.<p>This library could be used as follows:<pre><!DOCTYPE HTML>
-<html>
- <head>
- <title>Worker example: Crypto library</title>
- <script>
- var crytoLib = new Worker('libcrypto-v1.js'); // or could use 'libcrypto-v2.js'
+}</pre>
+
+ <p>Note that the crypto functions here are just stubs and don't do
+ real cryptography.</p>
+
+ <p>This library could be used as follows:</p>
+
+ <pre><!DOCTYPE HTML>
+<html>
+ <head>
+ <title>Worker example: Crypto library</title>
+ <script>
+ var cryptoLib = new Worker('libcrypto-v1.js'); // or could use 'libcrypto-v2.js'
function getKeys() {
var state = 0;
cryptoLib.startConversation("genkeys").onmessage = function (e) {
@@ -1037,22 +1056,26 @@
port.close();
};
}
- </script>
- <style>
+ </script>
+ <style>
textarea { display: block; }
- </style>
- </head>
- <body onload="getKeys()">
- <fieldset>
- <legend>Keys</legend>
- <p><label>Public Key: <textarea id="public"></textarea></label></p>
- <p><label>Private Key: <textarea id="private"></textarea></label></p>
- </fieldset>
- <p><label>Input: <textarea id="input"></textarea></label></p>
- <p><button onclick="enc()">Encrypt</button> <button onclick="dec()">Decrypt</button></p>
- </body>
-</html></pre><p>A later version of the API, though, might want to offload all the
- crypto work onto subworkers. This could be done as follows:<pre>function handleMessage(e) {
+ </style>
+ </head>
+ <body onload="getKeys()">
+ <fieldset>
+ <legend>Keys</legend>
+ <p><label>Public Key: <textarea id="public"></textarea></label></p>
+ <p><label>Private Key: <textarea id="private"></textarea></label></p>
+ </fieldset>
+ <p><label>Input: <textarea id="input"></textarea></label></p>
+ <p><button onclick="enc()">Encrypt</button> <button onclick="dec()">Decrypt</button></p>
+ </body>
+</html></pre>
+
+ <p>A later version of the API, though, might want to offload all the
+ crypto work onto subworkers. This could be done as follows:</p>
+
+ <pre>function handleMessage(e) {
if (e.data == "genkeys")
genkeys(e.ports[0]);
else if (e.data == "encrypt")
@@ -1087,7 +1110,13 @@
onmessage = handleMessage;
else // shared worker
onconnect = function (e) { e.ports[0].onmessage = handleMessage };
-</pre><p>The little subworkers would then be as follows.<p>For generating key pairs:<pre>onmessage = function (e) {
+</pre>
+
+ <p>The little subworkers would then be as follows.</p>
+
+ <p>For generating key pairs:</p>
+
+ <pre>onmessage = function (e) {
var k = _generateKeyPair();
e.ports[0].postMessage(k[0]);
e.ports[0].postMessage(k[1]);
@@ -1096,7 +1125,11 @@
function _generateKeyPair() {
return [Math.random(), Math.random()];
-}</pre><p>For encrypting:<pre>onmessage = function (e) {
+}</pre>
+
+ <p>For encrypting:</p>
+
+ <pre>onmessage = function (e) {
var key = e.data;
e.ports[0].onmessage = function (e) {
var s = e.data;
@@ -1106,7 +1139,11 @@
function _encrypt(k, s) {
return 'encrypted-' + k + ' ' + s;
-}</pre><p>For decrypting:<pre>onmessage = function (e) {
+}</pre>
+
+ <p>For decrypting:</p>
+
+ <pre>onmessage = function (e) {
var key = e.data;
e.ports[0].onmessage = function (e) {
var s = e.data;
@@ -1116,10 +1153,16 @@
function _decrypt(k, s) {
return s.substr(s.indexOf(' ')+1);
-}</pre><p>Notice how the users of the API don't have to even know that this
+}</pre>
+
+ <p>Notice how the users of the API don't have to even know that this
is happening — the API hasn't changed; the library can
delegate to subworkers without changing its API, even though it is
- accepting data using message channels.<p><a href="http://www.whatwg.org/demos/workers/crypto/page.html">View this example online</a>.<h2 id="conformance-requirements"><span class="secno">2 </span>Conformance requirements</h2><p>All diagrams, examples, and notes in this specification are
+ accepting data using message channels.</p>
+
+ <p><a href="http://www.whatwg.org/demos/workers/crypto/page.html">View this example online</a>.</p>
+
+(end startConversation block) (beware nested comments)--><h2 id="conformance-requirements"><span class="secno">2 </span>Conformance requirements</h2><p>All diagrams, examples, and notes in this specification are
non-normative, as are all sections explicitly marked non-normative.
Everything else in this specification is normative.<p>The key words "MUST", "MUST NOT", "REQUIRED", <!--"SHALL", "SHALL
NOT",--> "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and
Received on Monday, 7 February 2011 22:16:36 UTC