1 /* $NetBSD: rf_callback.c,v 1.5 2001/10/04 15:58:51 oster Exp $ */ 2 /* 3 * Copyright (c) 1995 Carnegie-Mellon University. 4 * All rights reserved. 5 * 6 * Author: Jim Zelenka 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@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 * callback.c -- code to manipulate callback descriptor 32 * 33 ****************************************************************************************/ 34 35 36 #include <dev/raidframe/raidframevar.h> 37 38 #include "rf_archs.h" 39 #include "rf_threadstuff.h" 40 #include "rf_callback.h" 41 #include "rf_debugMem.h" 42 #include "rf_freelist.h" 43 #include "rf_shutdown.h" 44 45 static RF_FreeList_t *rf_callback_freelist; 46 47 #define RF_MAX_FREE_CALLBACK 64 48 #define RF_CALLBACK_INC 4 49 #define RF_CALLBACK_INITIAL 4 50 51 static void rf_ShutdownCallback(void *); 52 static void 53 rf_ShutdownCallback(ignored) 54 void *ignored; 55 { 56 RF_FREELIST_DESTROY(rf_callback_freelist, next, (RF_CallbackDesc_t *)); 57 } 58 59 int 60 rf_ConfigureCallback(listp) 61 RF_ShutdownList_t **listp; 62 { 63 int rc; 64 65 RF_FREELIST_CREATE(rf_callback_freelist, RF_MAX_FREE_CALLBACK, 66 RF_CALLBACK_INC, sizeof(RF_CallbackDesc_t)); 67 if (rf_callback_freelist == NULL) 68 return (ENOMEM); 69 rc = rf_ShutdownCreate(listp, rf_ShutdownCallback, NULL); 70 if (rc) { 71 RF_ERRORMSG3("Unable to add to shutdown list file %s line %d rc=%d\n", __FILE__, 72 __LINE__, rc); 73 rf_ShutdownCallback(NULL); 74 return (rc); 75 } 76 RF_FREELIST_PRIME(rf_callback_freelist, RF_CALLBACK_INITIAL, next, 77 (RF_CallbackDesc_t *)); 78 return (0); 79 } 80 81 RF_CallbackDesc_t * 82 rf_AllocCallbackDesc() 83 { 84 RF_CallbackDesc_t *p; 85 86 RF_FREELIST_GET(rf_callback_freelist, p, next, (RF_CallbackDesc_t *)); 87 return (p); 88 } 89 90 void 91 rf_FreeCallbackDesc(p) 92 RF_CallbackDesc_t *p; 93 { 94 RF_FREELIST_FREE(rf_callback_freelist, p, next); 95 } 96