1 /* $NetBSD: rf_shutdown.c,v 1.20 2008/12/17 20:51:34 cegger 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 1.20 2008/12/17 20:51:34 cegger 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 #if RF_DEBUG_SHUTDOWN 59 void 60 _rf_ShutdownCreate(RF_ShutdownList_t **listp, void (*cleanup)(void *arg), 61 void *arg, char *file, int line) 62 #else 63 void 64 _rf_ShutdownCreate(RF_ShutdownList_t **listp, void (*cleanup)(void *arg), 65 void *arg) 66 #endif 67 { 68 RF_ShutdownList_t *ent; 69 70 /* 71 * Have to directly allocate memory here, since we start up before 72 * and shutdown after RAIDframe internal allocation system. 73 */ 74 /* ent = (RF_ShutdownList_t *) malloc(sizeof(RF_ShutdownList_t), 75 M_RAIDFRAME, M_WAITOK); */ 76 ent = (RF_ShutdownList_t *) malloc(sizeof(RF_ShutdownList_t), 77 M_RAIDFRAME, M_WAITOK); 78 ent->cleanup = cleanup; 79 ent->arg = arg; 80 #if RF_DEBUG_SHUTDOWN 81 ent->file = file; 82 ent->line = line; 83 #endif 84 ent->next = *listp; 85 *listp = ent; 86 } 87 88 void 89 rf_ShutdownList(RF_ShutdownList_t **list) 90 { 91 RF_ShutdownList_t *r, *next; 92 #if RF_DEBUG_SHUTDOWN 93 char *file; 94 int line; 95 #endif 96 97 for (r = *list; r; r = next) { 98 next = r->next; 99 #if RF_DEBUG_SHUTDOWN 100 file = r->file; 101 line = r->line; 102 103 if (rf_shutdownDebug) { 104 printf("call shutdown, created %s:%d\n", file, line); 105 } 106 #endif 107 r->cleanup(r->arg); 108 #if RF_DEBUG_SHUTDOWN 109 if (rf_shutdownDebug) { 110 printf("completed shutdown, created %s:%d\n", file, line); 111 } 112 #endif 113 rf_FreeShutdownEnt(r); 114 } 115 *list = NULL; 116 } 117