Using Threads in Interactive Systems: A Case Study Technical Report CSL 93-16 Computer Science Laboratory Xerox Palo Alto Research Center 3333 Coyote Hill Road Palo Alto, CA 94304 Copyright (c) Xerox Corporation 1993. All rights reserved. Postscript and Interpress masters for CSL 93-16 may be found in the directory ThreadStudyPaper/ along with the source file. This CDROM contains (most of) the current source for the Cedar programming environment as developed over the last ten years by the the Computer Science Laboratory at Xerox's Palo Alto Research Center. Our principle purpose in releasing this CDROM is to allow other researchers to peruse the Cedar source code. The most convenient way to do this, if you happen to own a SPARC-based workstation running the SunOS4.1.x or Solaris2 operating system and the X11 Window System will be to actually start up a Cedar system and use the Cedar Tioga editor for browsing the files. Starting Cedar: For SPARC-based SunOS4.1.x and Solaris2 machines, we've set things up so that you can run the Cedar system directly from the CDROM. Mount it with type hsfs and on SunOS4.1.x do % setenv XeroxCedar /Cedar % cd $XeroxCedar/cdpackage/solaris1 % x11v For SPARC-based Solaris2 machines use % setenv XeroxCedar /Cedar % cd $XeroxCedar/cdpackage/solaris2 % x11v At this point you would do well to print the file $XeroxCedar/doc/CedarPrimer.ps for a general introduction to Cedar and some hints on using it from the mouse and keyboard. (If you happen to have an Interpress printer you could instead print CedarPrimer.interpress from the same directory.) If you do not have an appropriate workstation to run Cedar you may not be completely out of luck. We have also included the viewtioga package for the Andrew ez editor and some emacs elisp packages that provide the ability to read files in tioga's format. The viewtioga package will require expertise in ez to install. Look in the viewtioga subdirectory of the top level directory. Necessary fonts for viewtioga can be found in the Xfonts directory. The elisp packages are in the emacs subdirectory and should be easy to install. Emacs conversion is pretty slow, but it does let you look at tioga files. The cedarname utility also uses the XeroxCedar environment variable as does the viewtioga package. Unfortunately some uses of the variable refer to ${XeroxCedar}/.. which may cause trouble if you copy the CDROM to magnetic disk and split the contents across multiple file systems. The system has facilities to cope with the situation but they require more work than simply setting a single environment variable. Also included on this CDROM are the interfaces of our POSIX Portable Common Runtime (PPCR). When you run Cedar off of this CDROM, PPCR provides the threads and garbage collection as well as the POSIX environment, but PPCR should itself not be too apparent. The usual way of running Cedar at PARC is using more mature version of the runtime called PCR. Since PCR requires customization of the Unix kernel and does not run on Solaris2 we decided to supply the PPCR-based Cedar for the CDROM, even though it is not as complete a development environment as the PCR-based version. It has also not seen the performance tuning that Cedar on PCR has. The latest released version of PCR is available from parcftp.xerox.com in directory /pub/pcr. Several papers about PCR are available from the same directory. Legalities: Please refer to the file COPYRIGHT in the top level directory. Contact: Recipients of this disk or the files on it are asked to please notify PCR Coordinator Xerox Palo Alto Research Center 3333 Coyote Hill Road Palo Alto CA 94304 pcrcoordinator@parc.xerox.com of their postal or electronic mail address.  NewlineDelimiter J CharProps ButtonLSFileNameF/net/parcbox3/testvol/chauser/CedarCDROM/Cedar/doc/CedarPrimerCDROM.ps# ButtonLSFileNameF/net/parcbox3/testvol/chauser/CedarCDROM/Cedar/doc/CedarPrimerCDROM.psJ