diff options
Diffstat (limited to 'sys/dev/raidframe/rf_callback.h')
| -rw-r--r-- | sys/dev/raidframe/rf_callback.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/sys/dev/raidframe/rf_callback.h b/sys/dev/raidframe/rf_callback.h new file mode 100644 index 00000000000..cb3db8ebbbd --- /dev/null +++ b/sys/dev/raidframe/rf_callback.h @@ -0,0 +1,92 @@ +/* $OpenBSD: rf_callback.h,v 1.1 1999/01/11 14:29:00 niklas Exp $ */ +/* $NetBSD: rf_callback.h,v 1.1 1998/11/13 04:20:26 oster Exp $ */ +/* + * Copyright (c) 1995 Carnegie-Mellon University. + * All rights reserved. + * + * Author: Mark Holland + * + * Permission to use, copy, modify and distribute this software and + * its documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND + * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie the + * rights to redistribute these changes. + */ + +/***************************************************************************************** + * + * callback.h -- header file for callback.c + * + * the reconstruction code must manage concurrent I/Os on multiple drives. + * it sometimes needs to suspend operation on a particular drive until some + * condition occurs. we can't block the thread, of course, or we wouldn't + * be able to manage our other outstanding I/Os. Instead we just suspend + * new activity on the indicated disk, and create a callback descriptor and + * put it someplace where it will get invoked when the condition that's + * stalling us has cleared. When the descriptor is invoked, it will call + * a function that will restart operation on the indicated disk. + * + ****************************************************************************************/ + +/* : + * Log: rf_callback.h,v + * Revision 1.8 1996/08/01 15:57:28 jimz + * minor cleanup + * + * Revision 1.7 1996/07/27 23:36:08 jimz + * Solaris port of simulator + * + * Revision 1.6 1996/06/10 11:55:47 jimz + * Straightened out some per-array/not-per-array distinctions, fixed + * a couple bugs related to confusion. Added shutdown lists. Removed + * layout shutdown function (now subsumed by shutdown lists). + * + * Revision 1.5 1996/05/23 21:46:35 jimz + * checkpoint in code cleanup (release prep) + * lots of types, function names have been fixed + * + * Revision 1.4 1996/05/18 19:51:34 jimz + * major code cleanup- fix syntax, make some types consistent, + * add prototypes, clean out dead code, et cetera + * + * Revision 1.3 1996/05/17 16:30:46 jimz + * add prototypes + * + * Revision 1.2 1995/12/01 15:15:55 root + * added copyright info + * + */ + +#ifndef _RF__RF_CALLBACK_H_ +#define _RF__RF_CALLBACK_H_ + +#include "rf_types.h" + +struct RF_CallbackDesc_s { + void (*callbackFunc)(RF_CBParam_t); /* function to call */ + RF_CBParam_t callbackArg; /* args to give to function, or just info about this callback */ + RF_CBParam_t callbackArg2; + RF_RowCol_t row; /* disk row and column IDs to give to the callback func */ + RF_RowCol_t col; + RF_CallbackDesc_t *next; /* next entry in list */ +}; + +int rf_ConfigureCallback(RF_ShutdownList_t **listp); +RF_CallbackDesc_t *rf_AllocCallbackDesc(void); +void rf_FreeCallbackDesc(RF_CallbackDesc_t *p); + +#endif /* !_RF__RF_CALLBACK_H_ */ |