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rf_reconbuffer.h revision 1.1 
      1 /*	$NetBSD: rf_reconbuffer.h,v 1.1 1998/11/13 04:20:33 oster Exp $	*/
      2 /*
      3  * Copyright (c) 1995 Carnegie-Mellon University.
      4  * All rights reserved.
      5  *
      6  * Author: Mark Holland
      7  *
      8  * Permission to use, copy, modify and distribute this software and
      9  * its documentation is hereby granted, provided that both the copyright
     10  * notice and this permission notice appear in all copies of the
     11  * software, derivative works or modified versions, and any portions
     12  * thereof, and that both notices appear in supporting documentation.
     13  *
     14  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     15  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     16  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     17  *
     18  * Carnegie Mellon requests users of this software to return to
     19  *
     20  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     21  *  School of Computer Science
     22  *  Carnegie Mellon University
     23  *  Pittsburgh PA 15213-3890
     24  *
     25  * any improvements or extensions that they make and grant Carnegie the
     26  * rights to redistribute these changes.
     27  */
     28 
     29 /*******************************************************************
     30  *
     31  * rf_reconbuffer.h -- header file for reconstruction buffer manager
     32  *
     33  *******************************************************************/
     34 
     35 /* :
     36  * Log: rf_reconbuffer.h,v
     37  * Revision 1.9  1996/07/13 00:00:59  jimz
     38  * sanitized generalized reconstruction architecture
     39  * cleaned up head sep, rbuf problems
     40  *
     41  * Revision 1.8  1996/06/07  21:33:04  jimz
     42  * begin using consistent types for sector numbers,
     43  * stripe numbers, row+col numbers, recon unit numbers
     44  *
     45  * Revision 1.7  1996/06/05  18:06:02  jimz
     46  * Major code cleanup. The Great Renaming is now done.
     47  * Better modularity. Better typing. Fixed a bunch of
     48  * synchronization bugs. Made a lot of global stuff
     49  * per-desc or per-array. Removed dead code.
     50  *
     51  * Revision 1.6  1996/06/03  23:28:26  jimz
     52  * more bugfixes
     53  * check in tree to sync for IPDS runs with current bugfixes
     54  * there still may be a problem with threads in the script test
     55  * getting I/Os stuck- not trivially reproducible (runs ~50 times
     56  * in a row without getting stuck)
     57  *
     58  * Revision 1.5  1996/06/02  17:31:48  jimz
     59  * Moved a lot of global stuff into array structure, where it belongs.
     60  * Fixed up paritylogging, pss modules in this manner. Some general
     61  * code cleanup. Removed lots of dead code, some dead files.
     62  *
     63  * Revision 1.4  1996/05/23  21:46:35  jimz
     64  * checkpoint in code cleanup (release prep)
     65  * lots of types, function names have been fixed
     66  *
     67  * Revision 1.3  1996/05/18  19:51:34  jimz
     68  * major code cleanup- fix syntax, make some types consistent,
     69  * add prototypes, clean out dead code, et cetera
     70  *
     71  * Revision 1.2  1995/12/06  15:04:47  root
     72  * added copyright info
     73  *
     74  */
     75 
     76 #ifndef _RF__RF_RECONBUFFER_H_
     77 #define _RF__RF_RECONBUFFER_H_
     78 
     79 #include "rf_types.h"
     80 #include "rf_reconstruct.h"
     81 
     82 int rf_SubmitReconBuffer(RF_ReconBuffer_t *rbuf, int keep_int,
     83 	int use_committed);
     84 int rf_SubmitReconBufferBasic(RF_ReconBuffer_t *rbuf, int keep_int,
     85 	int use_committed);
     86 int rf_MultiWayReconXor(RF_Raid_t *raidPtr,
     87 	RF_ReconParityStripeStatus_t *pssPtr);
     88 RF_ReconBuffer_t *rf_GetFullReconBuffer(RF_ReconCtrl_t *reconCtrlPtr);
     89 int rf_CheckForFullRbuf(RF_Raid_t *raidPtr, RF_ReconCtrl_t *reconCtrl,
     90 	RF_ReconParityStripeStatus_t *pssPtr, int numDataCol);
     91 void rf_ReleaseFloatingReconBuffer(RF_Raid_t *raidPtr, RF_RowCol_t row,
     92 	RF_ReconBuffer_t *rbuf);
     93 void rf_ReleaseBufferWaiters(RF_Raid_t *raidPtr,
     94 	RF_ReconParityStripeStatus_t *pssPtr);
     95 void rf_ReleaseBufferWaiter(RF_ReconCtrl_t *rcPtr, RF_ReconBuffer_t *rbuf);
     96 
     97 #endif /* !_RF__RF_RECONBUFFER_H_ */
     98