diff options
Diffstat (limited to 'sys/dev/raidframe/rf_callback.c')
| -rw-r--r-- | sys/dev/raidframe/rf_callback.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/sys/dev/raidframe/rf_callback.c b/sys/dev/raidframe/rf_callback.c new file mode 100644 index 00000000000..dffd52fc7a6 --- /dev/null +++ b/sys/dev/raidframe/rf_callback.c @@ -0,0 +1,121 @@ +/* $OpenBSD: rf_callback.c,v 1.1 1999/01/11 14:29:00 niklas Exp $ */ +/* $NetBSD: rf_callback.c,v 1.1 1998/11/13 04:20:26 oster Exp $ */ +/* + * Copyright (c) 1995 Carnegie-Mellon University. + * All rights reserved. + * + * Author: Jim Zelenka + * + * 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.c -- code to manipulate callback descriptor + * + ****************************************************************************************/ + +/* : + * Log: rf_callback.c,v + * Revision 1.11 1996/06/17 03:18:04 jimz + * include shutdown.h for macroized ShutdownCreate + * + * Revision 1.10 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 1.9 1996/05/23 21:46:35 jimz + * checkpoint in code cleanup (release prep) + * lots of types, function names have been fixed + * + * Revision 1.8 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 1.7 1996/05/17 16:30:41 jimz + * convert to RF_FREELIST stuff + * + * Revision 1.6 1995/12/01 15:16:04 root + * added copyright info + * + */ + +#ifndef _KERNEL +#ifdef __NetBSD__ +#include <unistd.h> +#endif /* __NetBSD__ */ +#endif + +#include "rf_types.h" +#include "rf_threadstuff.h" +#include "rf_callback.h" +#include "rf_debugMem.h" +#include "rf_freelist.h" +#include "rf_shutdown.h" + +static RF_FreeList_t *rf_callback_freelist; + +#define RF_MAX_FREE_CALLBACK 64 +#define RF_CALLBACK_INC 4 +#define RF_CALLBACK_INITIAL 4 + +static void rf_ShutdownCallback(void *); +static void rf_ShutdownCallback(ignored) + void *ignored; +{ + RF_FREELIST_DESTROY(rf_callback_freelist,next,(RF_CallbackDesc_t *)); +} + +int rf_ConfigureCallback(listp) + RF_ShutdownList_t **listp; +{ + int rc; + + RF_FREELIST_CREATE(rf_callback_freelist, RF_MAX_FREE_CALLBACK, + RF_CALLBACK_INC, sizeof(RF_CallbackDesc_t)); + if (rf_callback_freelist == NULL) + return(ENOMEM); + rc = rf_ShutdownCreate(listp, rf_ShutdownCallback, NULL); + if (rc) { + RF_ERRORMSG3("Unable to add to shutdown list file %s line %d rc=%d\n", __FILE__, + __LINE__, rc); + rf_ShutdownCallback(NULL); + return(rc); + } + RF_FREELIST_PRIME(rf_callback_freelist, RF_CALLBACK_INITIAL,next, + (RF_CallbackDesc_t *)); + return(0); +} + +RF_CallbackDesc_t *rf_AllocCallbackDesc() +{ + RF_CallbackDesc_t *p; + + RF_FREELIST_GET(rf_callback_freelist,p,next,(RF_CallbackDesc_t *)); + return(p); +} + +void rf_FreeCallbackDesc(p) + RF_CallbackDesc_t *p; +{ + RF_FREELIST_FREE(rf_callback_freelist,p,next); +} |