1 /* $OpenBSD: altq_rmclass_debug.h,v 1.3 2006/03/04 22:40:15 brad Exp $ */
2 /* $KAME: altq_rmclass_debug.h,v 1.2 2000/02/22 14:00:35 itojun Exp $ */
3
4 /*
5 * Copyright (c) Sun Microsystems, Inc. 1998 All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the SMCC Technology
21 * Development Group at Sun Microsystems, Inc.
22 *
23 * 4. The name of the Sun Microsystems, Inc nor may not be used to endorse or
24 * promote products derived from this software without specific prior
25 * written permission.
26 *
27 * SUN MICROSYSTEMS DOES NOT CLAIM MERCHANTABILITY OF THIS SOFTWARE OR THE
28 * SUITABILITY OF THIS SOFTWARE FOR ANY PARTICULAR PURPOSE. The software is
29 * provided "as is" without express or implied warranty of any kind.
30 *
31 * These notices must be retained in any copies of any part of this software.
32 */
33
34 #ifndef _ALTQ_ALTQ_RMCLASS_DEBUG_H_
35 #define _ALTQ_ALTQ_RMCLASS_DEBUG_H_
36
37 /* #pragma ident "@(#)rm_class_debug.h 1.7 98/05/04 SMI" */
38
39 /*
40 * Cbq debugging macros
41 */
42
43 #ifdef __cplusplus
44 extern "C" {
45 #endif
46
47 #ifdef CBQ_TRACE
48 #ifndef NCBQTRACE
49 #define NCBQTRACE (16 * 1024)
50 #endif
51
52 /*
53 * To view the trace output, using adb, type:
54 * adb -k /dev/ksyms /dev/mem <cr>, then type
55 * cbqtrace_count/D to get the count, then type
56 * cbqtrace_buffer,0tcount/Dp4C" "Xn
57 * This will dump the trace buffer from 0 to count.
58 */
59 /*
60 * in ALTQ, "call cbqtrace_dump(N)" from DDB to display 20 events
61 * from Nth event in the circular buffer.
62 */
63
64 struct cbqtrace {
65 int count;
66 int function; /* address of function */
67 int trace_action; /* descriptive 4 characters */
68 int object; /* object operated on */
69 };
70
71 extern struct cbqtrace cbqtrace_buffer[];
72 extern struct cbqtrace *cbqtrace_ptr;
73 extern int cbqtrace_count;
74
75 #define CBQTRACEINIT() { \
76 if (cbqtrace_ptr == NULL) \
77 cbqtrace_ptr = cbqtrace_buffer; \
78 else { \
79 cbqtrace_ptr = cbqtrace_buffer; \
80 bzero((void *)cbqtrace_ptr, sizeof(cbqtrace_buffer)); \
81 cbqtrace_count = 0; \
82 } \
83 }
84
85 #define LOCK_TRACE() splnet()
86 #define UNLOCK_TRACE(x) splx(x)
87
88 #define CBQTRACE(func, act, obj) { \
89 int __s = LOCK_TRACE(); \
90 int *_p = &cbqtrace_ptr->count; \
91 *_p++ = ++cbqtrace_count; \
92 *_p++ = (int)(func); \
93 *_p++ = (int)(act); \
94 *_p++ = (int)(obj); \
95 if ((struct cbqtrace *)(void *)_p >= &cbqtrace_buffer[NCBQTRACE])\
96 cbqtrace_ptr = cbqtrace_buffer; \
97 else \
98 cbqtrace_ptr = (struct cbqtrace *)(void *)_p; \
99 UNLOCK_TRACE(__s); \
100 }
101 #else
102
103 /* If no tracing, define no-ops */
104 #define CBQTRACEINIT()
105 #define CBQTRACE(a, b, c)
106
107 #endif /* !CBQ_TRACE */
108
109 #ifdef __cplusplus
110 }
111 #endif
112
113 #endif /* _ALTQ_ALTQ_RMCLASS_DEBUG_H_ */