1 /* $NetBSD: rf_shutdown.c,v 1.21 2021/07/21 23:10:12 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 1.21 2021/07/21 23:10:12 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
rf_FreeShutdownEnt(RF_ShutdownList_t * ent)53 rf_FreeShutdownEnt(RF_ShutdownList_t *ent)
54 {
55 free(ent, M_RAIDFRAME);
56 }
57
58 #if RF_DEBUG_SHUTDOWN
59 void
_rf_ShutdownCreate(RF_ShutdownList_t ** listp,void (* cleanup)(void * arg),void * arg,char * file,int line)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->cleanup = cleanup;
77 ent->arg = arg;
78 #if RF_DEBUG_SHUTDOWN
79 ent->file = file;
80 ent->line = line;
81 #endif
82 ent->next = *listp;
83 *listp = ent;
84 }
85
86 void
rf_ShutdownList(RF_ShutdownList_t ** list)87 rf_ShutdownList(RF_ShutdownList_t **list)
88 {
89 RF_ShutdownList_t *r, *next;
90 #if RF_DEBUG_SHUTDOWN
91 char *file;
92 int line;
93 #endif
94
95 for (r = *list; r; r = next) {
96 next = r->next;
97 #if RF_DEBUG_SHUTDOWN
98 file = r->file;
99 line = r->line;
100
101 if (rf_shutdownDebug) {
102 printf("call shutdown, created %s:%d\n", file, line);
103 }
104 #endif
105 r->cleanup(r->arg);
106 #if RF_DEBUG_SHUTDOWN
107 if (rf_shutdownDebug) {
108 printf("completed shutdown, created %s:%d\n", file, line);
109 }
110 #endif
111 rf_FreeShutdownEnt(r);
112 }
113 *list = NULL;
114 }
115