sys/net/altq/altq_rmclass_debug.h

   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_ */