Annotation of sys/dev/raidframe/rf_callback.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: rf_callback.c,v 1.3 2002/12/16 07:01:03 tdeval Exp $ */
2: /* $NetBSD: rf_callback.c,v 1.3 1999/02/05 00:06:06 oster Exp $ */
3:
4: /*
5: * Copyright (c) 1995 Carnegie-Mellon University.
6: * All rights reserved.
7: *
8: * Author: Jim Zelenka
9: *
10: * Permission to use, copy, modify and distribute this software and
11: * its documentation is hereby granted, provided that both the copyright
12: * notice and this permission notice appear in all copies of the
13: * software, derivative works or modified versions, and any portions
14: * thereof, and that both notices appear in supporting documentation.
15: *
16: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
17: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
18: * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
19: *
20: * Carnegie Mellon requests users of this software to return to
21: *
22: * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
23: * School of Computer Science
24: * Carnegie Mellon University
25: * Pittsburgh PA 15213-3890
26: *
27: * any improvements or extensions that they make and grant Carnegie the
28: * rights to redistribute these changes.
29: */
30:
31: /*****************************************************************************
32: *
33: * rf_callback.c -- Code to manipulate callback descriptor.
34: *
35: *****************************************************************************/
36:
37:
38: #include "rf_types.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: void rf_ShutdownCallback(void *);
48:
49: #define RF_MAX_FREE_CALLBACK 64
50: #define RF_CALLBACK_INC 4
51: #define RF_CALLBACK_INITIAL 4
52:
53: void
54: rf_ShutdownCallback(void *ignored)
55: {
56: RF_FREELIST_DESTROY(rf_callback_freelist, next, (RF_CallbackDesc_t *));
57: }
58:
59: int
60: rf_ConfigureCallback(RF_ShutdownList_t **listp)
61: {
62: int rc;
63:
64: RF_FREELIST_CREATE(rf_callback_freelist, RF_MAX_FREE_CALLBACK,
65: RF_CALLBACK_INC, sizeof(RF_CallbackDesc_t));
66: if (rf_callback_freelist == NULL)
67: return (ENOMEM);
68: rc = rf_ShutdownCreate(listp, rf_ShutdownCallback, NULL);
69: if (rc) {
70: RF_ERRORMSG3("Unable to add to shutdown list file %s line %d"
71: " rc=%d.\n", __FILE__, __LINE__, rc);
72: rf_ShutdownCallback(NULL);
73: return (rc);
74: }
75: RF_FREELIST_PRIME(rf_callback_freelist, RF_CALLBACK_INITIAL, next,
76: (RF_CallbackDesc_t *));
77: return (0);
78: }
79:
80: RF_CallbackDesc_t *
81: rf_AllocCallbackDesc(void)
82: {
83: RF_CallbackDesc_t *p;
84:
85: RF_FREELIST_GET(rf_callback_freelist, p, next, (RF_CallbackDesc_t *));
86: return (p);
87: }
88:
89: void
90: rf_FreeCallbackDesc(RF_CallbackDesc_t *p)
91: {
92: RF_FREELIST_FREE(rf_callback_freelist, p, next);
93: }
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