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Stabilizers
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<h2 id="head-c81b79df3c6448eae7c4f80428b54cd5692a17d7">Installation</h2>
<ul>
<li>
<p>
Stabilizers currently require the MLton sources, this should be fixed by the next release
</p>
</li>
</ul>
<h2 id="head-3229609e15436ec51bcf00818a69a84dbc58a0c2">License</h2>
<ul>
<li>
<p>
Stabilizers are released under the MLton License
</p>
</li>
</ul>
<h2 id="head-ed58f29743f8e14b9c8e13d41e070a1cc1d1c9f5">Instructions</h2>
<ul>
<li>
<p>
Download and build a source copy of MLton
</p>
</li>
<li>
<p>
Extract the tar.gz file attached to this wiki page
</p>
</li>
<li>
<p>
Some examples are provided in the "examples/" sub directory, more examples will be added to this page in the following week
</p>
</li>
</ul>
<h2 id="head-a1ce09c8340ea8a92a6ab955588a7dfba7597534">Bug reports / Suggestions</h2>
<ul>
<li>
<p>
Please send any errors you encounter to schatzp and lziarek at cs.purdue.edu
</p>
</li>
<li>
<p>
We are looking to expand the usability of stabilizers
</p>
</li>
<li>
<p>
Please send any suggestions and desired functionality to the above email addresses
</p>
</li>
</ul>
<h2 id="head-2c924e3088204ee77ba681f72be3444357932fca">Note</h2>
<ul>
<li>
<p>
This is an alpha release. We expect to have another release shortly with added functionality soon
</p>
</li>
<li>
<p>
More documentation, such as signatures and descriptions of functionality, will be forthcoming
</p>
</li>
</ul>
<h2 id="head-9e9cf3221a30246219863f1d2366e36cb580debc">Documentation</h2>
<pre class=code>
<B><FONT COLOR="#0000FF">signature</FONT></B> STABLE =
<B><FONT COLOR="#0000FF">sig</FONT></B>
<B><FONT COLOR="#A020F0">type</FONT></B><B><FONT COLOR="#228B22"> checkpoint
</FONT></B><B><FONT COLOR="#A020F0">val</FONT></B> stable: ('a -> 'b) -> ('a -> 'b)
<B><FONT COLOR="#A020F0">val</FONT></B> stabilize: unit -> 'a
<B><FONT COLOR="#A020F0">val</FONT></B> stableCP: (('a -> 'b) * (unit -> unit)) ->
(('a -> 'b) * checkpoint)
<B><FONT COLOR="#A020F0">val</FONT></B> stabilizeCP: checkpoint -> unit
<B><FONT COLOR="#A020F0">val</FONT></B> unmonitoredAssign: ('a ref * 'a) -> unit
<B><FONT COLOR="#A020F0">val</FONT></B> monitoredAssign: ('a ref * 'a) -> unit
<B><FONT COLOR="#0000FF">end</FONT></B>
</PRE>
<p>
</p>
<p>
<tt>Stable</tt> provides functions to manage stable sections.
</p>
<ul>
<li>
<p>
<tt>type checkpoint</tt> <br>
handle used to stabilize contexts other than the current one.
</p>
</li>
<li class="gap">
<p>
<tt>stable f</tt> <br>
returns a function identical to <tt>f</tt> that will execute within a stable section.
</p>
</li>
<li class="gap">
<p>
<tt>stabilize ()</tt> <br>
unrolls the effects made up to the current context to at least the nearest enclosing {{stable}}} section. These effects may have propagated to other threads, so all affected threads are returned to a globally consistent previous state. The return is undefined because control cannot resume after stabilize is called.
</p>
</li>
<li class="gap">
<p>
<tt>stableCP (f, comp)</tt> <br>
returns a function <tt>f'</tt> and checkpoint tag <tt>cp</tt>. Function <tt>f'</tt> is identical to <tt>f</tt> but when applied will execute within a stable section. <tt>comp</tt> will be executed if <tt>f'</tt> is later stabilized. <tt>cp</tt> is used by <tt>stabilizeCP</tt> to stabilize a given checkpoint.
</p>
</li>
<li class="gap">
<p>
<tt>stabilizeCP cp</tt> <br>
same as stabilize except that the (possibly current) checkpoint to stabilize is provided.
</p>
</li>
<li class="gap">
<p>
<tt>unmonitoredAssign (r, v)</tt> <br>
standard assignment (<tt>:=</tt>). The version of CML distributed rebinds <tt>:=</tt> to a monitored version so interesting effects can be recorded.
</p>
</li>
<li class="gap">
<p>
<tt>monitoredAssign (r, v)</tt> <br>
the assignment operator that should be used in programs that use stabilizers. <tt>:=</tt> is rebound to this by including CML.
</p>
</li>
</ul>
<h2 id="head-a479c9c34e878d07b4d67a73a48f432ad7dc53c8">Download</h2>
<ul>
<li>
<p>
<a href="http://mlton.org/pages/Stabilizers/attachments/stabilizers_alpha_2006-10-09.tar.gz"><img src="moin-www.png" alt="[WWW]" height="11" width="11">stabilizers_alpha_2006-10-09.tar.gz</a>
</p>
</li>
</ul>
<h2 id="head-a4bc8bf5caf54b18cea9f58e83dd4acb488deb17">Also see</h2>
<ul>
<li>
<p>
<a href = "References#ZiarekEtAl06">ZiarekEtAl06</a>
</p>
</li>
</ul>
</div>
<p>
<hr>
Last edited on 2007-08-23 04:40:21 by <span title="c-71-57-91-146.hsd1.il.comcast.net"><a href="MatthewFluet">MatthewFluet</a></span>.
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