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Date: Wed, 20 Nov 1996 19:14:49 GMT
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<HTML><HEAD><TITLE>Storage Management</TITLE><LINK REV="made" HREF="mailto:dswise@cs.indiana.edu"></HEAD><BODY><H2>Storage Management</H2><STRONG>Description:</STRONG><BLOCKQUOTE>Heap memory usually requires overhead for storage management,traditionally garbage collection.We have built areference-counting memory ( <!WA0><a href="ftp://ftp.cs.indiana.edu/pub/techreports/TR401ps.Z">RCM </a>), to be installed as banks of ``smart memories''without incurring processor cycles for heap management,even on a multiprocessor.It would support languages that depend on a heap,e.g. Lisp, Scheme, Prolog, or Haskell;local use is in Scheme and C.A prototype <!WA1><a href="ftp://ftp.cs.indiana.edu/pub/techreports/TR354.ps.Z">Applicative File System </a>has been built over RCM, whichprovides essential files services---persistency and bulk---withina purely applicative environment.<BLOCKQUOTE></BLOCKQUOTE>Other work is targeted at reusing nodes in place.Applicative style often asks us to copy structure with changes when,in fact, analogous structure is abandoned as the copy occurs.We want to recycle these uniquely referenced nodes,either at <!WA2><a href="ftp://ftp.cs.indiana.edu/pub/techreports/TR360.ps.Z">run time </a>or, better, at <!WA3><a href="ftp://ftp.cs.indiana.edu/pub/techreports/TR437ps.Z">compile time </a>by noticing the unique referencing.</BLOCKQUOTE><BLOCKQUOTE>We have developed a<!WA4><a href="ftp://ftp.cs.indiana.edu/pub/techreports/TR400.ps.Z">generationalstorage management system</a>, incorporated into Chez Scheme, that employsa segmented memory model and a hybrid tagging system. The hybrid taggingsystem uses typedpointers and typed objects for object-level typing and big bag ofpages (BiBOP) for meta-level typing. The system allows allocation tobe performed in-line from a single register-based allocation pointer,results in virtually no tagging overhead, allows the Schemeheap to coexist gracefully with other languages' run-time systems,increases data locality, supports<!WA5><a href="http://www.cs.indiana.edu/hyplan/dyb/guardians-pldi93.ps.gz">weakpairs and finalization</a>, and supports large objects efficiently. Thesystem is used for ongoing research in storage management.</BLOCKQUOTE><P><STRONG>Associated Faculty:</STRONG> <!WA6><a href="http://www.cs.indiana.edu/hyplan/dswise.html">David S. Wise </a>( <!WA7><a href="mailto:dswise@cs.indiana.edu">dswise </a>), <!WA8><a href="http://www.cs.indiana.edu/hyplan/dyb.html">R. Kent Dybvig </a>( <!WA9><a href="mailto:dyb@cs.indiana.edu">dyb </a>).<P><STRONG>Associated Graduate Students:</STRONG> <!WA10><a href="http://www.cs.indiana.edu/hyplan/heckb.html">Brian Heck </a>( <!WA11><a href="mailto:heckb@cs.indiana.edu">heckb </a>), <!WA12><a href="http://www.cs.indiana.edu/hyplan/dmeadows.html">Diana Meadows </a>( <!WA13><a href="mailto:dmeadows@cs.indiana.edu">meadows </a>), <br> <!WA14><a href="http://bach.ucs.indiana.edu/hyplan/jwalgenb.html">Joshua Walgenbach </a>( <!WA15><a href="mailto:jwalgenb@indiana.edu">jwalgenb </a>).<P><!-- OPTIONAL<STRONG>Affiliated Projects:</STRONG>List any affiliated projects, here or elsewhere, or people at otherplaces involved in the research. Delete item if not applicable.<P>--><!-- OPTIONAL<STRONG>Support:</STRONG>Supported in part by the <!WA16><a href="http://www.nsf.gov">National Science Foundation </a>under <!WA17><a href="http://www.nsf.gov:80/cise/cda/in-infra.htm">a grant </a>numbered <!WA18><a href="http://www.cs.indiana.edu/hyplan/RI92.html">CDA93-03189 </a>.--><P><!-- OPTIONAL<STRONG><!WA19><A HREF="http://www.cs.indiana.edu/hyplan/dswise/your_link.html">More information</A></STRONG><P>--><!WA20><A HREF="http://www.cs.indiana.edu/l/www/research/index.html"><!WA21><IMG SRC="http://www.cs.indiana.edu/hyplan/back.gif">Return to IU Computer ScienceResearch</A><!-- or use HREF="http://www.cs.indiana.edu/research/index.html" if your page isn't served by the CS Dept server --></BODY></HTML>⌨️ 快捷键说明
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