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 | |