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altq_rmclass_debug.h revision 1.1 
      1 /*	$KAME: altq_rmclass_debug.h,v 1.2 2000/02/22 14:00:35 itojun Exp $	*/
      2 
      3 /*
      4  * Copyright (c) Sun Microsystems, Inc. 1998 All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  *
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  *
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  *
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *      This product includes software developed by the SMCC Technology
     20  *      Development Group at Sun Microsystems, Inc.
     21  *
     22  * 4. The name of the Sun Microsystems, Inc nor may not be used to endorse or
     23  *      promote products derived from this software without specific prior
     24  *      written permission.
     25  *
     26  * SUN MICROSYSTEMS DOES NOT CLAIM MERCHANTABILITY OF THIS SOFTWARE OR THE
     27  * SUITABILITY OF THIS SOFTWARE FOR ANY PARTICULAR PURPOSE.  The software is
     28  * provided "as is" without express or implied warranty of any kind.
     29  *
     30  * These notices must be retained in any copies of any part of this software.
     31  */
     32 
     33 #ifndef _ALTQ_ALTQ_RMCLASS_DEBUG_H_
     34 #define	_ALTQ_ALTQ_RMCLASS_DEBUG_H_
     35 
     36 /* #pragma ident	"@(#)rm_class_debug.h	1.7	98/05/04 SMI" */
     37 
     38 /*
     39  * Cbq debugging macros
     40  */
     41 
     42 #ifdef __cplusplus
     43 extern "C" {
     44 #endif
     45 
     46 #ifdef	CBQ_TRACE
     47 #ifndef NCBQTRACE
     48 #define	NCBQTRACE (16 * 1024)
     49 #endif
     50 
     51 /*
     52  * To view the trace output, using adb, type:
     53  *	adb -k /dev/ksyms /dev/mem <cr>, then type
     54  *	cbqtrace_count/D to get the count, then type
     55  *	cbqtrace_buffer,0tcount/Dp4C" "Xn
     56  *	This will dump the trace buffer from 0 to count.
     57  */
     58 /*
     59  * in ALTQ, "call cbqtrace_dump(N)" from DDB to display 20 events
     60  * from Nth event in the circular buffer.
     61  */
     62 
     63 struct cbqtrace {
     64 	int count;
     65 	int function;		/* address of function */
     66 	int trace_action;	/* descriptive 4 characters */
     67 	int object;		/* object operated on */
     68 };
     69 
     70 extern struct cbqtrace cbqtrace_buffer[];
     71 extern struct cbqtrace *cbqtrace_ptr;
     72 extern int cbqtrace_count;
     73 
     74 #define	CBQTRACEINIT() {				\
     75 	if (cbqtrace_ptr == NULL)		\
     76 		cbqtrace_ptr = cbqtrace_buffer; \
     77 	else { \
     78 		cbqtrace_ptr = cbqtrace_buffer; \
     79 		bzero((void *)cbqtrace_ptr, sizeof(cbqtrace_buffer)); \
     80 		cbqtrace_count = 0; \
     81 	} \
     82 }
     83 
     84 #define	LOCK_TRACE()	splimp()
     85 #define	UNLOCK_TRACE(x)	splx(x)
     86 
     87 #define	CBQTRACE(func, act, obj) {		\
     88 	int __s = LOCK_TRACE();			\
     89 	int *_p = &cbqtrace_ptr->count;	\
     90 	*_p++ = ++cbqtrace_count;		\
     91 	*_p++ = (int)(func);			\
     92 	*_p++ = (int)(act);			\
     93 	*_p++ = (int)(obj);			\
     94 	if ((struct cbqtrace *)(void *)_p >= &cbqtrace_buffer[NCBQTRACE])\
     95 		cbqtrace_ptr = cbqtrace_buffer; \
     96 	else					\
     97 		cbqtrace_ptr = (struct cbqtrace *)(void *)_p; \
     98 	UNLOCK_TRACE(__s);			\
     99 	}
    100 #else
    101 
    102 /* If no tracing, define no-ops */
    103 #define	CBQTRACEINIT()
    104 #define	CBQTRACE(a, b, c)
    105 
    106 #endif	/* !CBQ_TRACE */
    107 
    108 #ifdef __cplusplus
    109 }
    110 #endif
    111 
    112 #endif	/* _ALTQ_ALTQ_RMCLASS_DEBUG_H_ */
    113