<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <meta name="robots" content="index,nofollow"> <title>ConcurrentML - MLton Standard ML Compiler (SML Compiler)</title> <link rel="stylesheet" type="text/css" charset="iso-8859-1" media="all" href="common.css"> <link rel="stylesheet" type="text/css" charset="iso-8859-1" media="screen" href="screen.css"> <link rel="stylesheet" type="text/css" charset="iso-8859-1" media="print" href="print.css"> <link rel="Start" href="Home"> </head> <body lang="en" dir="ltr"> <script src="http://www.google-analytics.com/urchin.js" type="text/javascript"> </script> <script type="text/javascript"> _uacct = "UA-833377-1"; urchinTracker(); </script> <table bgcolor = lightblue cellspacing = 0 style = "border: 0px;" width = 100%> <tr> <td style = " border: 0px; color: darkblue; font-size: 150%; text-align: left;"> <a class = mltona href="Home">MLton MLTONWIKIVERSION</a> <td style = " border: 0px; font-size: 150%; text-align: center; width: 50%;"> ConcurrentML <td style = " border: 0px; text-align: right;"> <table cellspacing = 0 style = "border: 0px"> <tr style = "vertical-align: middle;"> </table> <tr style = "background-color: white;"> <td colspan = 3 style = " border: 0px; font-size:70%; text-align: right;"> <a href = "Home">Home</a> <a href = "TitleIndex">Index</a> </table> <div id="content" lang="en" dir="ltr"> <a class="external" href="http://cml.cs.uchicago.edu/"><img src="moin-www.png" alt="[WWW]" height="11" width="11">Concurrent ML</a> is an SML concurrency library based on synchronous message passing. MLton has an initial port of CML from SML/NJ, but is missing a thread-safe wrapper around the Basis Library and event-based equivalents to <tt>IO</tt> and <tt>OS</tt> functions. <p> All of the core CML functionality is present. </p> <pre class=code> <B><FONT COLOR="#0000FF">structure</FONT></B> CML: CML <B><FONT COLOR="#0000FF">structure</FONT></B> SyncVar: SYNC_VAR <B><FONT COLOR="#0000FF">structure</FONT></B> Mailbox: MAILBOX <B><FONT COLOR="#0000FF">structure</FONT></B> Multicast: MULTICAST <B><FONT COLOR="#0000FF">structure</FONT></B> SimpleRPC: SIMPLE_RPC <B><FONT COLOR="#0000FF">structure</FONT></B> RunCML: RUN_CML </PRE> <p> </p> <p> The <tt>RUN_CML</tt> signature is minimal. <pre class=code> <B><FONT COLOR="#0000FF">signature</FONT></B> RUN_CML = <B><FONT COLOR="#0000FF">sig</FONT></B> <B><FONT COLOR="#A020F0">val</FONT></B> isRunning: unit -> bool <B><FONT COLOR="#A020F0">val</FONT></B> doit: (unit -> unit) * Time.time option -> OS.Process.status <B><FONT COLOR="#A020F0">val</FONT></B> shutdown: OS.Process.status -> 'a <B><FONT COLOR="#0000FF">end</FONT></B> </PRE> MLton's <tt>RunCML</tt> structure does not include all of the cleanup and logging operations of SML/NJ's <tt>RunCML</tt> structure. However, the implementation does include the <tt>CML.timeOutEvt</tt> and <tt>CML.atTimeEvt</tt> functions, and a preemptive scheduler that knows to sleep when there are no ready threads and some threads blocked on time events. </p> <p> Because MLton does not wrap the Basis Library for CML, the "right" way to call a Basis Library function that is stateful is to wrap the call with <tt>MLton.Thread.atomically</tt>. </p> <h2 id="head-0bb18642b70b9f8a9c12ccf39487328f306b8e19">Usage</h2> <ul> <li> <p> You can import the CML Library into an MLB file with: <div> <table> <tr> <td align="center"> MLB file</td> <td align="center"> Description</td> </tr> <tr> <td> <tt>$(SML_LIB)/cml/cml.mlb</tt></td> <td> </td> </tr> </p> </table> </div> </li> <li class="gap"> <p> If you are porting a project from SML/NJ's <a href="CompilationManager">CompilationManager</a> to MLton's <a href="MLBasis"> ML Basis system</a> using <tt>cm2mlb</tt>, note that the following map is included by default: <pre>$cml/cml.cm $(SML_LIB)/cml/cml.mlb </pre> This will automatically convert a <tt>$cml/cml.cm</tt> import in an input <tt>.cm</tt> file into a <tt>$(SML_LIB)/cml/cml.mlb</tt> import in the output <tt>.mlb</tt> file. </p> </li> </ul> <h2 id="head-a4bc8bf5caf54b18cea9f58e83dd4acb488deb17">Also see</h2> <ul> <li> <p> <a href="ConcurrentMLImplementation">ConcurrentMLImplementation</a> </p> </li> <li> <p> <a href="eXene">eXene</a> </p> </li> </ul> </div> <p> <hr> Last edited on 2007-08-23 17:24:44 by <span title="fenrir.uchicago.edu"><a href="MatthewFluet">MatthewFluet</a></span>. </body></html>