2002-10-20 08:17:39 +00:00
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/* $NetBSD: rf_callback.c,v 1.3 1999/02/05 00:06:06 oster Exp $ */
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2003-08-24 17:55:58 +00:00
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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2002-10-20 08:17:39 +00:00
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/*
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* Copyright (c) 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Jim Zelenka
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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/*****************************************************************************************
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*
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* callback.c -- code to manipulate callback descriptor
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*
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****************************************************************************************/
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#include <dev/raidframe/rf_types.h>
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#include <dev/raidframe/rf_threadstuff.h>
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#include <dev/raidframe/rf_callback.h>
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#include <dev/raidframe/rf_debugMem.h>
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#include <dev/raidframe/rf_freelist.h>
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#include <dev/raidframe/rf_shutdown.h>
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static RF_FreeList_t *rf_callback_freelist;
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#define RF_MAX_FREE_CALLBACK 64
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#define RF_CALLBACK_INC 4
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#define RF_CALLBACK_INITIAL 4
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static void rf_ShutdownCallback(void *);
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static void
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rf_ShutdownCallback(ignored)
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void *ignored;
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{
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RF_FREELIST_DESTROY(rf_callback_freelist, next, (RF_CallbackDesc_t *));
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}
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int
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rf_ConfigureCallback(listp)
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RF_ShutdownList_t **listp;
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{
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int rc;
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RF_FREELIST_CREATE(rf_callback_freelist, RF_MAX_FREE_CALLBACK,
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RF_CALLBACK_INC, sizeof(RF_CallbackDesc_t));
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if (rf_callback_freelist == NULL)
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return (ENOMEM);
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rc = rf_ShutdownCreate(listp, rf_ShutdownCallback, NULL);
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if (rc) {
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RF_ERRORMSG3("Unable to add to shutdown list file %s line %d rc=%d\n", __FILE__,
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__LINE__, rc);
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rf_ShutdownCallback(NULL);
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return (rc);
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}
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RF_FREELIST_PRIME(rf_callback_freelist, RF_CALLBACK_INITIAL, next,
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(RF_CallbackDesc_t *));
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return (0);
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}
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RF_CallbackDesc_t *
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rf_AllocCallbackDesc()
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{
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RF_CallbackDesc_t *p;
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RF_FREELIST_GET(rf_callback_freelist, p, next, (RF_CallbackDesc_t *));
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return (p);
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}
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void
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rf_FreeCallbackDesc(p)
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RF_CallbackDesc_t *p;
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{
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RF_FREELIST_FREE(rf_callback_freelist, p, next);
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}
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