client/src/Updater.i3

 Copyright 1996-2003 John D. Polstra.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgment:
 *      This product includes software developed by John D. Polstra.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 


INTERFACE Updater;

IMPORT
  CVProto, FileUpdater, Logger, Reaper, StreamRd, SupFileRecSeq,
  SyncFixupQueue, Thread;

TYPE
  T <: Public;

  Public = Thread.Closure OBJECT
  METHODS
    init(proto: CVProto.T;
         rd: StreamRd.T;
         collections: SupFileRecSeq.T;
         fixups: SyncFixupQueue.T;
	 deleteLimit := -1;
         reaper: Reaper.T := NIL;
         destDir: TEXT := NIL;
         stats: Stats := NIL;
         trace: Logger.T := NIL): T;
  END;

  Stats <: StatsPublic;

  StatsPublic = MUTEX OBJECT
    updateInfo: ARRAY FileUpdater.UpdateType OF UpdateInfo;
    totals: UpdateInfo;
  METHODS
    init(): Stats;
    start();
    update(type: FileUpdater.UpdateType);
    finish();
  END;

  UpdateInfo = RECORD
    fileCount: CARDINAL := 0;	(* Number of files updated *)
    fileBytes := 0.0d0;		(* Final size of updated file *)
    wireBytes := 0.0d0;		(* Bytes from wire before decompression *)
    commBytes := 0.0d0;		(* Bytes in after decompression *)
  END;

 An Updater.T is the thread that receives edit requests from the
   server's File Differ, and applies the edits to the client's files.


   proto describes the version of the protocol being used.


   rd is the input stream from the File Differ.


   If any RCS file updates fail to produce the proper checksums, Fixup
   records will be communicated back to the Detailer via the fixups
   queue.


   If a deleteLimit is specified, the updater will exit with a fatal
   error if an attempt is made to delete more than that number of files.
   The default is no limit.


   If a reaper is given, it will be notified just before the thread
   terminates.


   destDir is an optional directory where updated files will be
   placed.  The default is to update files in their original locations.


   If stats is specified, the updater will maintain various
   statistics in the given object.  It will call the start method
   initially, then the update method after each update of the
   statistics, and finally, the finish method just before terminating. 


   Debugging information is written to the trace stream, if specified. 


END Updater.





interface SupFileRecSeq is in: