bsd/sys/trace.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  23 /*-
  24  * Copyright (c) 1982, 1986, 1993
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * Redistribution and use in source and binary forms, with or without
  28  * modification, are permitted provided that the following conditions
  29  * are met:
  30  * 1. Redistributions of source code must retain the above copyright
  31  *    notice, this list of conditions and the following disclaimer.
  32  * 2. Redistributions in binary form must reproduce the above copyright
  33  *    notice, this list of conditions and the following disclaimer in the
  34  *    documentation and/or other materials provided with the distribution.
  35  * 3. All advertising materials mentioning features or use of this software
  36  *    must display the following acknowledgement:
  37  *      This product includes software developed by the University of
  38  *      California, Berkeley and its contributors.
  39  * 4. Neither the name of the University nor the names of its contributors
  40  *    may be used to endorse or promote products derived from this software
  41  *    without specific prior written permission.
  42  *
  43  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  44  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  45  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  46  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  47  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  48  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  49  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  50  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  51  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  52  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  53  * SUCH DAMAGE.
  54  *
  55  *      @(#)trace.h     8.1 (Berkeley) 6/2/93
  56  */
  57
  58 #ifndef _SYS_TRACE_H_
  59 #define _SYS_TRACE_H_
  60
  61 /*
  62  * File system buffer tracing points; all trace <pack(dev, size), bn>
  63  */
  64 #define TR_BREADHIT     0       /* buffer read found in cache */
  65 #define TR_BREADMISS    1       /* buffer read not in cache */
  66 #define TR_BWRITE       2       /* buffer written */
  67 #define TR_BREADHITRA   3       /* buffer read-ahead found in cache */
  68 #define TR_BREADMISSRA  4       /* buffer read-ahead not in cache */
  69 #define TR_XFODMISS     5       /* exe fod read */
  70 #define TR_XFODHIT      6       /* exe fod read */
  71 #define TR_BRELSE       7       /* brelse */
  72 #define TR_BREALLOC     8       /* expand/contract a buffer */
  73
  74 /*
  75  * Memory allocator trace points; all trace the amount of memory involved
  76  */
  77 #define TR_MALL         10      /* memory allocated */
  78
  79 /*
  80  * Paging trace points: all are <vaddr, pid>
  81  */
  82 #define TR_INTRANS      20      /* page intransit block */
  83 #define TR_EINTRANS     21      /* page intransit wait done */
  84 #define TR_FRECLAIM     22      /* reclaim from free list */
  85 #define TR_RECLAIM      23      /* reclaim from loop */
  86 #define TR_XSFREC       24      /* reclaim from free list instead of drum */
  87 #define TR_XIFREC       25      /* reclaim from free list instead of fsys */
  88 #define TR_WAITMEM      26      /* wait for memory in pagein */
  89 #define TR_EWAITMEM     27      /* end memory wait in pagein */
  90 #define TR_ZFOD         28      /* zfod page fault */
  91 #define TR_EXFOD        29      /* exec fod page fault */
  92 #define TR_VRFOD        30      /* vread fod page fault */
  93 #define TR_CACHEFOD     31      /* fod in file system cache */
  94 #define TR_SWAPIN       32      /* drum page fault */
  95 #define TR_PGINDONE     33      /* page in done */
  96 #define TR_SWAPIO       34      /* swap i/o request arrives */
  97
  98 /*
  99  * System call trace points.
 100  */
 101 #define TR_VADVISE      40      /* vadvise occurred with <arg, pid> */
 102
 103 /*
 104  * Miscellaneous
 105  */
 106 #define TR_STAMP        45      /* user said vtrace(VTR_STAMP, value); */
 107
 108 /*
 109  * This defines the size of the trace flags array.
 110  */
 111 #define TR_NFLAGS       100     /* generous */
 112
 113 #define TRCSIZ          4096
 114
 115 /*
 116  * Specifications of the vtrace() system call, which takes one argument.
 117  */
 118 #define VTRACE          64+51
 119
 120 #define VTR_DISABLE     0               /* set a trace flag to 0 */
 121 #define VTR_ENABLE      1               /* set a trace flag to 1 */
 122 #define VTR_VALUE       2               /* return value of a trace flag */
 123 #define VTR_UALARM      3               /* set alarm to go off (sig 16) */
 124                                         /* in specified number of hz */
 125 #define VTR_STAMP       4               /* user specified stamp */
 126
 127 #ifdef KERNEL
 128 #if TRACE
 129 extern struct   proc *traceproc;
 130 extern int      tracewhich, tracebuf[TRCSIZ];
 131 extern u_int    tracex;
 132 extern char     traceflags[TR_NFLAGS];
 133 #define pack(v,b)       (((v)->v_mount->mnt_stat.f_fsid.val[0])<<16)|(b)
 134 #define trace(a,b,c) {                                                  \
 135         if (traceflags[a])                                              \
 136                 trace1(a,b,c);                                          \
 137 }
 138 #else
 139 #define trace(a,b,c)
 140 #endif
 141 #endif /* KERNEL */
 142 #endif /* !_SYS_TRACE_H_ */
 143