1 /* $KAME: altq_rmclass_debug.h,v 1.3 2002/11/29 04:36:24 kjc Exp $ */ 2 /* $DragonFly: src/sys/net/altq/altq_rmclass_debug.h,v 1.3 2005/06/03 18:20:36 swildner 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 #ifdef _KERNEL 38 #include <sys/thread2.h> 39 #endif 40 41 /* #pragma ident "@(#)rm_class_debug.h 1.7 98/05/04 SMI" */ 42 43 /* 44 * Cbq debugging macros 45 */ 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 #define CBQTRACEINIT() { \ 72 if (cbqtrace_ptr == NULL) \ 73 cbqtrace_ptr = cbqtrace_buffer; \ 74 else { \ 75 cbqtrace_ptr = cbqtrace_buffer; \ 76 bzero((void *)cbqtrace_ptr, sizeof(cbqtrace_buffer)); \ 77 cbqtrace_count = 0; \ 78 } \ 79 } 80 81 #define LOCK_TRACE() crit_enter(); 82 #define UNLOCK_TRACE() crit_exit(); 83 84 #define CBQTRACE(func, act, obj) { \ 85 LOCK_TRACE(); \ 86 int *_p = &cbqtrace_ptr->count; \ 87 *_p++ = ++cbqtrace_count; \ 88 *_p++ = (int)(func); \ 89 *_p++ = (int)(act); \ 90 *_p++ = (int)(obj); \ 91 if ((struct cbqtrace *)(void *)_p >= &cbqtrace_buffer[NCBQTRACE])\ 92 cbqtrace_ptr = cbqtrace_buffer; \ 93 else \ 94 cbqtrace_ptr = (struct cbqtrace *)(void *)_p; \ 95 UNLOCK_TRACE(); \ 96 } 97 #else 98 99 /* If no tracing, define no-ops */ 100 #define CBQTRACEINIT() 101 #define CBQTRACE(a, b, c) 102 103 #endif /* !CBQ_TRACE */ 104 105 #endif /* _ALTQ_ALTQ_RMCLASS_DEBUG_H_ */ 106