<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Mu - channel.mu</title> <meta name="Generator" content="Vim/7.4"> <meta name="plugin-version" content="vim7.4_v2"> <meta name="syntax" content="none"> <meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy="> <meta name="colorscheme" content="minimal"> <style type="text/css"> <!-- pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; } body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color: #080808; } * { font-size: 12pt; font-size: 1em; } .muRecipe { color: #ff8700; } .Delimiter { color: #800080; } .Comment { color: #9090ff; } .Constant { color: #00a0a0; } .Special { color: #c00000; } .muControl { color: #c0a020; } --> </style> <script type='text/javascript'> <!-- --> </script> </head> <body> <pre id='vimCodeElement'> <span class="Comment"># example program: communicating between routines using channels</span> <span class="muRecipe">def</span> producer sink:address:sink:character<span class="muRecipe"> -> </span>sink:address:sink:character [ <span class="Comment"># produce characters 1 to 5 on a channel</span> <span class="Constant">local-scope</span> <span class="Constant">load-ingredients</span> <span class="Comment"># n = 0</span> n:character<span class="Special"> <- </span>copy <span class="Constant">0</span> <span class="Delimiter">{</span> done?:boolean<span class="Special"> <- </span>lesser-than n, <span class="Constant">5</span> <span class="muControl">break-unless</span> done? <span class="Comment"># other threads might get between these prints</span> $print <span class="Constant">[produce: ]</span>, n, <span class="Constant">[ </span> <span class="Constant">]</span> sink<span class="Special"> <- </span>write sink, n n<span class="Special"> <- </span>add n, <span class="Constant">1</span> <span class="muControl">loop</span> <span class="Delimiter">}</span> ] <span class="muRecipe">def</span> consumer source:address:source:character<span class="muRecipe"> -> </span>source:address:source:character [ <span class="Comment"># consume and print integers from a channel</span> <span class="Constant">local-scope</span> <span class="Constant">load-ingredients</span> <span class="Delimiter">{</span> <span class="Comment"># read an integer from the channel</span> n:character, eof?:boolean, source<span class="Special"> <- </span>read source <span class="muControl">break-if</span> eof? <span class="Comment"># other threads might get between these prints</span> $print <span class="Constant">[consume: ]</span>, n:character, <span class="Constant">[ </span> <span class="Constant">]</span> <span class="muControl">loop</span> <span class="Delimiter">}</span> ] <span class="muRecipe">def</span> main [ <span class="Constant">local-scope</span> source:address:source:character, sink:address:sink:character<span class="Special"> <- </span>new-channel <span class="Constant">3/capacity</span> <span class="Comment"># create two background 'routines' that communicate by a channel</span> routine1:number<span class="Special"> <- </span>start-running producer, sink routine2:number<span class="Special"> <- </span>start-running consumer, source wait-for-routine routine1 wait-for-routine routine2 ] </pre> </body> </html> <!-- vim: set foldmethod=manual : -->