1 /* $NetBSD: rf_shutdown.c,v 1.15 2003/12/30 21:59:03 oster Exp $ */ 2 /* 3 * rf_shutdown.c 4 */ 5 /* 6 * Copyright (c) 1996 Carnegie-Mellon University. 7 * All rights reserved. 8 * 9 * Author: Jim Zelenka 10 * 11 * Permission to use, copy, modify and distribute this software and 12 * its documentation is hereby granted, provided that both the copyright 13 * notice and this permission notice appear in all copies of the 14 * software, derivative works or modified versions, and any portions 15 * thereof, and that both notices appear in supporting documentation. 16 * 17 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 18 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 19 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 20 * 21 * Carnegie Mellon requests users of this software to return to 22 * 23 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 24 * School of Computer Science 25 * Carnegie Mellon University 26 * Pittsburgh PA 15213-3890 27 * 28 * any improvements or extensions that they make and grant Carnegie the 29 * rights to redistribute these changes. 30 */ 31 /* 32 * Maintain lists of cleanup functions. Also, mechanisms for coordinating 33 * thread startup and shutdown. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: rf_shutdown.c,v 1.15 2003/12/30 21:59:03 oster Exp $"); 38 39 #include <dev/raidframe/raidframevar.h> 40 41 #include "rf_archs.h" 42 #include "rf_shutdown.h" 43 #include "rf_debugMem.h" 44 45 46 #ifndef RF_DEBUG_SHUTDOWN 47 #define RF_DEBUG_SHUTDOWN 0 48 #endif 49 50 static void rf_FreeShutdownEnt(RF_ShutdownList_t *); 51 52 static void 53 rf_FreeShutdownEnt(RF_ShutdownList_t *ent) 54 { 55 FREE(ent, M_RAIDFRAME); 56 } 57 58 int 59 _rf_ShutdownCreate(RF_ShutdownList_t **listp, void (*cleanup)(void *arg), 60 void *arg, char *file, int line) 61 { 62 RF_ShutdownList_t *ent; 63 64 /* 65 * Have to directly allocate memory here, since we start up before 66 * and shutdown after RAIDframe internal allocation system. 67 */ 68 /* ent = (RF_ShutdownList_t *) malloc(sizeof(RF_ShutdownList_t), 69 M_RAIDFRAME, M_WAITOK); */ 70 ent = (RF_ShutdownList_t *) malloc(sizeof(RF_ShutdownList_t), 71 M_RAIDFRAME, M_NOWAIT); 72 if (ent == NULL) 73 return (ENOMEM); 74 ent->cleanup = cleanup; 75 ent->arg = arg; 76 ent->file = file; 77 ent->line = line; 78 ent->next = *listp; 79 *listp = ent; 80 return (0); 81 } 82 83 int 84 rf_ShutdownList(RF_ShutdownList_t **list) 85 { 86 RF_ShutdownList_t *r, *next; 87 #if RF_DEBUG_SHUTDOWN 88 char *file; 89 int line; 90 #endif 91 92 for (r = *list; r; r = next) { 93 next = r->next; 94 #if RF_DEBUG_SHUTDOWN 95 file = r->file; 96 line = r->line; 97 98 if (rf_shutdownDebug) { 99 printf("call shutdown, created %s:%d\n", file, line); 100 } 101 #endif 102 r->cleanup(r->arg); 103 #if RF_DEBUG_SHUTDOWN 104 if (rf_shutdownDebug) { 105 printf("completed shutdown, created %s:%d\n", file, line); 106 } 107 #endif 108 rf_FreeShutdownEnt(r); 109 } 110 *list = NULL; 111 return (0); 112 } 113