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Annotation of kernel/bsd/sys/trace.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
        !            26: /*-
        !            27:  * Copyright (c) 1982, 1986, 1993
        !            28:  *     The Regents of the University of California.  All rights reserved.
        !            29:  *
        !            30:  * Redistribution and use in source and binary forms, with or without
        !            31:  * modification, are permitted provided that the following conditions
        !            32:  * are met:
        !            33:  * 1. Redistributions of source code must retain the above copyright
        !            34:  *    notice, this list of conditions and the following disclaimer.
        !            35:  * 2. Redistributions in binary form must reproduce the above copyright
        !            36:  *    notice, this list of conditions and the following disclaimer in the
        !            37:  *    documentation and/or other materials provided with the distribution.
        !            38:  * 3. All advertising materials mentioning features or use of this software
        !            39:  *    must display the following acknowledgement:
        !            40:  *     This product includes software developed by the University of
        !            41:  *     California, Berkeley and its contributors.
        !            42:  * 4. Neither the name of the University nor the names of its contributors
        !            43:  *    may be used to endorse or promote products derived from this software
        !            44:  *    without specific prior written permission.
        !            45:  *
        !            46:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            47:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            48:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            49:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            50:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            51:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            52:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            53:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            54:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            55:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            56:  * SUCH DAMAGE.
        !            57:  *
        !            58:  *     @(#)trace.h     8.1 (Berkeley) 6/2/93
        !            59:  */
        !            60: 
        !            61: #ifndef _SYS_TRACE_H_
        !            62: #define        _SYS_TRACE_H_
        !            63: 
        !            64: /*
        !            65:  * File system buffer tracing points; all trace <pack(dev, size), bn>
        !            66:  */
        !            67: #define        TR_BREADHIT     0       /* buffer read found in cache */
        !            68: #define        TR_BREADMISS    1       /* buffer read not in cache */
        !            69: #define        TR_BWRITE       2       /* buffer written */
        !            70: #define        TR_BREADHITRA   3       /* buffer read-ahead found in cache */
        !            71: #define        TR_BREADMISSRA  4       /* buffer read-ahead not in cache */
        !            72: #define        TR_XFODMISS     5       /* exe fod read */
        !            73: #define        TR_XFODHIT      6       /* exe fod read */
        !            74: #define        TR_BRELSE       7       /* brelse */
        !            75: #define        TR_BREALLOC     8       /* expand/contract a buffer */
        !            76: 
        !            77: /*
        !            78:  * Memory allocator trace points; all trace the amount of memory involved
        !            79:  */
        !            80: #define        TR_MALL         10      /* memory allocated */
        !            81: 
        !            82: /*
        !            83:  * Paging trace points: all are <vaddr, pid>
        !            84:  */
        !            85: #define        TR_INTRANS      20      /* page intransit block */
        !            86: #define        TR_EINTRANS     21      /* page intransit wait done */
        !            87: #define        TR_FRECLAIM     22      /* reclaim from free list */
        !            88: #define        TR_RECLAIM      23      /* reclaim from loop */
        !            89: #define        TR_XSFREC       24      /* reclaim from free list instead of drum */
        !            90: #define        TR_XIFREC       25      /* reclaim from free list instead of fsys */
        !            91: #define        TR_WAITMEM      26      /* wait for memory in pagein */
        !            92: #define        TR_EWAITMEM     27      /* end memory wait in pagein */
        !            93: #define        TR_ZFOD         28      /* zfod page fault */
        !            94: #define        TR_EXFOD        29      /* exec fod page fault */
        !            95: #define        TR_VRFOD        30      /* vread fod page fault */
        !            96: #define        TR_CACHEFOD     31      /* fod in file system cache */
        !            97: #define        TR_SWAPIN       32      /* drum page fault */
        !            98: #define        TR_PGINDONE     33      /* page in done */
        !            99: #define        TR_SWAPIO       34      /* swap i/o request arrives */
        !           100: 
        !           101: /*
        !           102:  * System call trace points.
        !           103:  */
        !           104: #define        TR_VADVISE      40      /* vadvise occurred with <arg, pid> */
        !           105: 
        !           106: /*
        !           107:  * Miscellaneous
        !           108:  */
        !           109: #define        TR_STAMP        45      /* user said vtrace(VTR_STAMP, value); */
        !           110: 
        !           111: /*
        !           112:  * This defines the size of the trace flags array.
        !           113:  */
        !           114: #define        TR_NFLAGS       100     /* generous */
        !           115: 
        !           116: #define        TRCSIZ          4096
        !           117: 
        !           118: /*
        !           119:  * Specifications of the vtrace() system call, which takes one argument.
        !           120:  */
        !           121: #define        VTRACE          64+51
        !           122: 
        !           123: #define        VTR_DISABLE     0               /* set a trace flag to 0 */
        !           124: #define        VTR_ENABLE      1               /* set a trace flag to 1 */
        !           125: #define        VTR_VALUE       2               /* return value of a trace flag */
        !           126: #define        VTR_UALARM      3               /* set alarm to go off (sig 16) */
        !           127:                                        /* in specified number of hz */
        !           128: #define        VTR_STAMP       4               /* user specified stamp */
        !           129: 
        !           130: #ifdef _KERNEL
        !           131: #if TRACE
        !           132: extern struct  proc *traceproc;
        !           133: extern int     tracewhich, tracebuf[TRCSIZ];
        !           134: extern u_int   tracex;
        !           135: extern char    traceflags[TR_NFLAGS];
        !           136: #define        pack(v,b)       (((v)->v_mount->mnt_stat.f_fsid.val[0])<<16)|(b)
        !           137: void microboot(struct timeval * tvp);
        !           138: #define trace1(a, b, c) { \
        !           139:        struct timeval t; \
        !           140:        microboot(&t); \
        !           141:         tracebuf[tracex++] = t.tv_usec; \
        !           142:         tracebuf[tracex++] = (a); \
        !           143:         tracebuf[tracex++] = (b); \
        !           144:         tracebuf[tracex++] = (c); \
        !           145:         tracex %= TRCSIZ; \
        !           146: }
        !           147: #define        trace(a,b,c) {                                                  \
        !           148:        if (traceflags[a])                                              \
        !           149:                trace1(a,b,c);                                          \
        !           150: }
        !           151: #else
        !           152: #define        trace(a,b,c)
        !           153: #endif
        !           154: #endif /* _KERNEL */
        !           155: #endif /* !_SYS_TRACE_H_ */
        !           156: 

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