Usenet 1994 January/usenetsourcesnewsgroupsinfomagicjanuary1994.iso/sources/misc/volume14/dmake/part19

Text File | 1990-07-26 | 38.7 KB | 1,253 lines

Newsgroups: comp.sources.misc
subject: v14i029: dmake version 3.5 part 19/21
From: [e-mail] (Dennis Vadura)
Sender: [e-mail] (Brandon S. Allbery - comp.sources.misc)

Posting-number: Volume 14, Issue 29
Submitted-by: [e-mail] (Dennis Vadura)
Archive-name: dmake/part19

#!/bin/sh
# this is part 19 of a multipart archive
# do not concatenate these parts, unpack them in order with /bin/sh
# file common/malloc.c continued
#
CurArch=19
if test ! -r s2_seq_.tmp
then echo "Please unpack part 1 first!"
     exit 1; fi
( read Scheck
  if test "$Scheck" != $CurArch
  then echo "Please unpack part $Scheck next!"
       exit 1;
  else exit 0; fi
) < s2_seq_.tmp || exit 1
echo "x - Continuing file common/malloc.c"
sed 's/^X//' << 'SHAR_EOF' >> common/malloc.c
X    }
X    for (blk = _fab; blk != (struct _Dmi *) 0; blk = blk->m_next) {
X        if ((char *) blk + sizeof *blk + blk->m_size - 1 > send) {
X            _malldstr("(brk = ");
X            _malldptr(send);
X            _malldstr(", eblk = ");
X            _malldptr((char *) blk + sizeof *blk + blk->m_size - 1);
X            _malldstr(")\n");
X            _mallerr(fn, "allocated block extends past brk: ", blk);
X        }
X        cnt = 0;
X        for (cblk = _fab; cblk != (struct _Dmi *) 0; cblk = cblk->m_next) {
X            if (blk == cblk)
X                if (cnt++ == 0)
X                    continue;
X                else
X                    _mallerr(fn, "block allocated twice: ", blk);
X            if (blk > cblk && (char *) blk < (char *) cblk + sizeof *cblk + cblk->m_size - 1) {
X                _malldstr("(blk = ");
X                _malldptr(blk);
X                _malldstr(", cblk = ");
X                _malldptr((char *) cblk + sizeof *cblk + cblk->m_size - 1);
X                _malldstr(")\n");
X                _mallerr(fn, "nested block in allocated list: ", blk);
X            }
X        }
X        for (cblk = _ffb; cblk != (struct _Dmi *) 0; cblk = cblk->m_next) {
X            if (blk == cblk)
X                _mallerr(fn, "block on allocated and free lists: ", blk);
X            if (blk > cblk && (char *) blk < (char *) cblk + sizeof *cblk + cblk->m_size - 1) {
X                _malldstr("(blk = ");
X                _malldptr(blk);
X                _malldstr(", cblk = ");
X                _malldptr((char *) cblk + sizeof *cblk + cblk->m_size - 1);
X                _malldstr(")\n");
X                _mallerr(fn, "allocated block nested in free block: ", blk);
X            }
X        }
X    }
X    for (blk = _ffb; blk != (struct _Dmi *) 0; blk = blk->m_next) {
X        if ((char *) blk + sizeof *blk + blk->m_size - 1 > send) {
X            _malldstr("(brk = ");
X            _malldptr(send);
X            _malldstr(", eblk = ");
X            _malldptr((char *) blk + sizeof *blk + blk->m_size - 1);
X            _malldstr(")\n");
X            _mallerr(fn, "free block extends past brk: ", blk);
X        }
X        cnt = 0;
X        for (cblk = _ffb; cblk != (struct _Dmi *) 0; cblk = cblk->m_next) {
X            if (blk == cblk)
X                if (cnt++ == 0)
X                    continue;
X                else
X                    _mallerr(fn, "block freed twice: ", blk);
X            if (blk > cblk && (char *) blk < (char *) cblk + sizeof *cblk + cblk->m_size - 1) {
X                _malldstr("(blk = ");
X                _malldptr(blk);
X                _malldstr(", cblk = ");
X                _malldptr((char *) cblk + sizeof *cblk + cblk->m_size - 1);
X                _malldstr(")\n");
X                _mallerr(fn, "nested block in free list: ", blk);
X            }
X        }
X        for (cblk = _fab; cblk != (struct _Dmi *) 0; cblk = cblk->m_next) {
X            if (blk == cblk)
X                _mallerr(fn, "block on allocated and free lists: ", blk);
X            if (blk > cblk && (char *) blk < (char *) cblk + sizeof *cblk + cblk->m_size - 1) {
X                _malldstr("(blk = ");
X                _malldptr(blk);
X                _malldstr(", cblk = ");
X                _malldptr((char *) cblk + sizeof *cblk + cblk->m_size - 1);
X                _malldstr(")\n");
X                _mallerr(fn, "free block nested in allocated block: ", blk);
X            }
X        }
X    }
X}
X
X/*
X * malloc objects and zero storage
X */
X
Xchar *calloc(n, size )
Xregister unsigned n, size;
X{
X    register char *s, *s1;
X
X    if (_mall_opt)
X    {
X         _malldstr("calloc: num: ");
X         _malldptr(n);
X         _malldstr( " size: " );
X         _malldptr(size);
X         _malldstr("\n");
X    }
X    n *= size;
X    if ((s = malloc(n)) == (char *) 0)
X        return (char *) 0;
X    for (s1 = s; n != 0; n--)
X        *s1++ = 0;
X    return s;
X}
X
X/*
X * for some reason this is in /lib/libc.a(calloc.o)
X */
X
Xcfree(s)
Xchar *s; {
X    free(s);
X}
X#endif
X#endif
X
SHAR_EOF
echo "File common/malloc.c is complete"
chmod 0440 common/malloc.c || echo "restore of common/malloc.c fails"
echo "x - extracting common/macros.h (Text)"
sed 's/^X//' << 'SHAR_EOF' > common/macros.h &&
X/* RCS      -- $Header: /u2/dvadura/src/generic/dmake/src/common/RCS/macros.h,v 1.1 90/07/19 13:30:46 dvadura Exp $
X-- SYNOPSIS -- general use macros.
X--
X-- DESCRIPTION
X--     ANSI macro relies on the fact that it can be replaced by (), or by
X--    its value, where the value is one value due to the preprocessors
X--    handling of arguments that are surrounded by ()'s as a single
X--    argument.
X--
X-- AUTHOR
X--      Dennis Vadura, [e-mail]
X--      CS DEPT, University of Waterloo, Waterloo, Ont., Canada
X--
X-- COPYRIGHT
X--      Copyright (c) 1990 by Dennis Vadura.  All rights reserved.
X--
X--      This program is free software; you can redistribute it and/or
X--      modify it under the terms of the GNU General Public License
X--      (version 1), as published by the Free Software Foundation, and
X--      found in the file 'LICENSE' included with this distribution.
X--
X--      This program is distributed in the hope that it will be useful,
X--      but WITHOUT ANY WARRANTY; without even the implied warrant of
X--      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
X--      GNU General Public License for more details.
X--
X--      You should have received a copy of the GNU General Public License
X--      along with this program;  if not, write to the Free Software
X--      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
X--
X-- LOG
X--     $Log:    macros.h,v $
X * Revision 1.1  90/07/19  13:30:46  dvadura
X * Initial Revision of Version 3.5
X *
X*/
X
X#ifndef    MACROS_h
X#define    MACROS_h
X
X#if defined(__STDC__) || defined(__TURBOC__)
X#define    ANSI(x)    x
X#else
X#define    ANSI(x)    ()
X#endif
X
X#define    NIL(p)    ((p*)NULL)
X#define    offsetof(type,id) ((size_t)&((type*)NULL)->id)
X
X#define    FALSE    0
X#define    TRUE    1
X
X#endif
X
SHAR_EOF
chmod 0440 common/macros.h || echo "restore of common/macros.h fails"
echo "x - extracting common/itypes.h (Text)"
sed 's/^X//' << 'SHAR_EOF' > common/itypes.h &&
X/* RCS      -- $Header: /u2/dvadura/src/generic/dmake/src/common/RCS/itypes.h,v 1.1 90/07/19 13:30:45 dvadura Exp $
X-- SYNOPSIS -- type declarations for common types
X--
X-- DESCRIPTION
X--     portable type declarations.
X--
X-- AUTHOR
X--      Dennis Vadura, [e-mail]
X--      CS DEPT, University of Waterloo, Waterloo, Ont., Canada
X--
X-- COPYRIGHT
X--      Copyright (c) 1990 by Dennis Vadura.  All rights reserved.
X--
X--      This program is free software; you can redistribute it and/or
X--      modify it under the terms of the GNU General Public License
X--      (version 1), as published by the Free Software Foundation, and
X--      found in the file 'LICENSE' included with this distribution.
X--
X--      This program is distributed in the hope that it will be useful,
X--      but WITHOUT ANY WARRANTY; without even the implied warrant of
X--      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
X--      GNU General Public License for more details.
X--
X--      You should have received a copy of the GNU General Public License
X--      along with this program;  if not, write to the Free Software
X--      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
X--
X-- LOG
X--     $Log:    itypes.h,v $
X * Revision 1.1  90/07/19  13:30:45  dvadura
X * Initial Revision of Version 3.5
X *
X*/
X
X
X#ifndef ITYPES_h
X#define    ITYPES_h
X
X#if defined(M_I86) || defined(MC68000)
Xtypedef char  int8;               /* typedefs for right size ints */
Xtypedef int   int16;
Xtypedef long  int32;
Xtypedef unsigned char  uint8;
Xtypedef unsigned int   uint16;
Xtypedef unsigned long  uint32;
X#else
Xtypedef char  int8;               /* typedefs for right size ints */
Xtypedef short int16;
Xtypedef long  int32;
Xtypedef unsigned char  uint8;
Xtypedef unsigned short uint16;
Xtypedef unsigned long  uint32;
X#endif
X
X#endif
X
SHAR_EOF
chmod 0440 common/itypes.h || echo "restore of common/itypes.h fails"
echo "x - extracting common/dbug.h (Text)"
sed 's/^X//' << 'SHAR_EOF' > common/dbug.h &&
X/******************************************************************************
X *                                          *
X *                               N O T I C E                      *
X *                                          *
X *                  Copyright Abandoned, 1987, Fred Fish              *
X *                                          *
X *                                          *
X *    This previously copyrighted work has been placed into the  public     *
X *    domain  by  the  author  and  may be freely used for any purpose,     *
X *    private or commercial.                              *
X *                                          *
X *    Because of the number of inquiries I was receiving about the  use     *
X *    of this product in commercially developed works I have decided to     *
X *    simply make it public domain to further its unrestricted use.   I     *
X *    specifically  would  be  most happy to see this material become a     *
X *    part of the standard Unix distributions by AT&T and the  Berkeley     *
X *    Computer  Science  Research Group, and a standard part of the GNU     *
X *    system from the Free Software Foundation.                  *
X *                                          *
X *    I would appreciate it, as a courtesy, if this notice is  left  in     *
X *    all copies and derivative works.  Thank you.                  *
X *                                          *
X *    The author makes no warranty of any kind  with  respect  to  this     *
X *    product  and  explicitly disclaims any implied warranties of mer-     *
X *    chantability or fitness for any particular purpose.              *
X *                                          *
X ******************************************************************************
X */
X
X
X/*
X *  FILE
X *
X *    dbug.h    user include file for programs using the dbug package
X *
X *  SYNOPSIS
X *
X *    #include <local/dbug.h>
X *
X *  SCCS ID
X *
X *    @(#)dbug.h    1.11 9/5/87
X *
X *  DESCRIPTION
X *
X *    Programs which use the dbug package must include this file.
X *    It contains the appropriate macros to call support routines
X *    in the dbug runtime library.
X *
X *    To disable compilation of the macro expansions define the
X *    preprocessor symbol "DBUG_OFF".  This will result in null
X *    macros expansions so that the resulting code will be smaller
X *    and faster.  (The difference may be smaller than you think
X *    so this step is recommended only when absolutely necessary).
X *    In general, tradeoffs between space and efficiency are
X *    decided in favor of efficiency since space is seldom a
X *    problem on the new machines).
X *
X *    All externally visible symbol names follow the pattern
X *    "_db_xxx..xx_" to minimize the possibility of a dbug package
X *    symbol colliding with a user defined symbol.
X *
X *    The DBUG_<N> style macros are obsolete and should not be used
X *    in new code.  Macros to map them to instances of DBUG_PRINT
X *    are provided for compatibility with older code.  They may go
X *    away completely in subsequent releases.
X *
X *  AUTHOR
X *
X *    Fred Fish
X *    (Currently employed by Motorola Computer Division, Tempe, Az.)
X *    hao!noao!mcdsun!fnf
X *    [phone]
X *
X */
X
X
X/*
X *    Internally used dbug variables which must be global.
X */
X
X#ifndef DBUG_OFF
X    extern int _db_on_;            /* TRUE if debug currently enabled */
X    extern FILE *_db_fp_;        /* Current debug output stream */
X    extern char *_db_process_;        /* Name of current process */
X    extern int _db_keyword_ ();        /* Accept/reject keyword */
X    extern void _db_push_ ();        /* Push state, set up new state */
X    extern void _db_pop_ ();        /* Pop previous debug state */
X    extern void _db_enter_ ();        /* New user function entered */
X    extern void _db_return_ ();        /* User function return */
X    extern void _db_pargs_ ();        /* Remember args for line */
X    extern void _db_doprnt_ ();        /* Print debug output */
X    extern void _db_setjmp_ ();        /* Save debugger environment */
X    extern void _db_longjmp_ ();    /* Restore debugger environment */
X# endif
X
X
X/*
X *    These macros provide a user interface into functions in the
X *    dbug runtime support library.  They isolate users from changes
X *    in the MACROS and/or runtime support.
X *
X *    The symbols "__LINE__" and "__FILE__" are expanded by the
X *    preprocessor to the current source file line number and file
X *    name respectively.
X *
X *    WARNING ---  Because the DBUG_ENTER macro allocates space on
X *    the user function's stack, it must precede any executable
X *    statements in the user function.
X *
X */
X
X# ifdef DBUG_OFF
X#    define DBUG_ENTER(a1)
X#    define DBUG_RETURN(a1) return(a1)
X#    define DBUG_VOID_RETURN return
X#    define DBUG_EXECUTE(keyword,a1)
X#    define DBUG_PRINT(keyword,arglist)
X#    define DBUG_2(keyword,format)        /* Obsolete */
X#    define DBUG_3(keyword,format,a1)        /* Obsolete */
X#    define DBUG_4(keyword,format,a1,a2)    /* Obsolete */
X#    define DBUG_5(keyword,format,a1,a2,a3)    /* Obsolete */
X#    define DBUG_PUSH(a1)
X#    define DBUG_POP()
X#    define DBUG_PROCESS(a1)
X#    define DBUG_FILE (stderr)
X#    define DBUG_SETJMP setjmp
X#    define DBUG_LONGJMP longjmp
X# else
X#    define DBUG_ENTER(a) \
X    auto char *_db_func_, *_db_file_; \
X    int _db_level_; \
X    _db_enter_ (a,__FILE__,__LINE__,&_db_func_,&_db_file_,&_db_level_)
X#    define DBUG_LEAVE \
X    (_db_return_ (__LINE__, &_db_func_, &_db_file_, &_db_level_))
X#    define DBUG_RETURN(a1) return (DBUG_LEAVE, (a1))
X/*   define DBUG_RETURN(a1) {DBUG_LEAVE; return(a1);}  Alternate form */
X#    define DBUG_VOID_RETURN DBUG_LEAVE; return
X#    define DBUG_EXECUTE(keyword,a1) \
X    {if (_db_on_) {if (_db_keyword_ (keyword)) { a1 }}}
X#    define DBUG_PRINT(keyword,arglist) \
X    {if (_db_on_) {_db_pargs_(__LINE__,keyword); _db_doprnt_ arglist;}}
X#    define DBUG_2(keyword,format) \
X    DBUG_PRINT(keyword,(format))        /* Obsolete */
X#    define DBUG_3(keyword,format,a1) \
X    DBUG_PRINT(keyword,(format,a1))        /* Obsolete */
X#    define DBUG_4(keyword,format,a1,a2) \
X    DBUG_PRINT(keyword,(format,a1,a2))    /* Obsolete */
X#    define DBUG_5(keyword,format,a1,a2,a3) \
X    DBUG_PRINT(keyword,(format,a1,a2,a3))    /* Obsolete */
X#    define DBUG_PUSH(a1) _db_push_ (a1)
X#    define DBUG_POP() _db_pop_ ()
X#    define DBUG_PROCESS(a1) (_db_process_ = a1)
X#    define DBUG_FILE (_db_fp_)
X#    define DBUG_SETJMP(a1) (_db_setjmp_ (), setjmp (a1))
X#    define DBUG_LONGJMP(a1,a2) (_db_longjmp_ (), longjmp (a1, a2))
X# endif
X
SHAR_EOF
chmod 0440 common/dbug.h || echo "restore of common/dbug.h fails"
echo "x - extracting common/dbug.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > common/dbug.c &&
X/******************************************************************************
X *                                          *
X *                               N O T I C E                      *
X *                                          *
X *                  Copyright Abandoned, 1987, Fred Fish              *
X *                                          *
X *                                          *
X *    This previously copyrighted work has been placed into the  public     *
X *    domain  by  the  author  and  may be freely used for any purpose,     *
X *    private or commercial.                              *
X *                                          *
X *    Because of the number of inquiries I was receiving about the  use     *
X *    of this product in commercially developed works I have decided to     *
X *    simply make it public domain to further its unrestricted use.   I     *
X *    specifically  would  be  most happy to see this material become a     *
X *    part of the standard Unix distributions by AT&T and the  Berkeley     *
X *    Computer  Science  Research Group, and a standard part of the GNU     *
X *    system from the Free Software Foundation.                  *
X *                                          *
X *    I would appreciate it, as a courtesy, if this notice is  left  in     *
X *    all copies and derivative works.  Thank you.                  *
X *                                          *
X *    The author makes no warranty of any kind  with  respect  to  this     *
X *    product  and  explicitly disclaims any implied warranties of mer-     *
X *    chantability or fitness for any particular purpose.              *
X *                                          *
X ******************************************************************************
X */
X
X
X/*
X *  FILE
X *
X *    dbug.c   runtime support routines for dbug package
X *
X *  SCCS
X *
X *    @(#)dbug.c    1.19 9/5/87
X *
X *  DESCRIPTION
X *
X *    These are the runtime support routines for the dbug package.
X *    The dbug package has two main components; the user include
X *    file containing various macro definitions, and the runtime
X *    support routines which are called from the macro expansions.
X *
X *    Externally visible functions in the runtime support module
X *    use the naming convention pattern "_db_xx...xx_", thus
X *    they are unlikely to collide with user defined function names.
X *
X *  AUTHOR(S)
X *
X *    Fred Fish        (base code)
X *    (Currently at Motorola Computer Division, Tempe, Az.)
X *    hao!noao!mcdsun!fnf
X *    [phone]
X *
X *    Binayak Banerjee    (profiling enhancements)
X *    seismo!bpa!sjuvax!bbanerje
X */
X
X
X#include <stdio.h>
X#ifdef amiga
X#define AMIGA
X#endif
X
X#ifdef AMIGA
X#define HZ (50)            /* Probably in some header somewhere */
X#endif
X
X/*
X *    Manifest constants that should not require any changes.
X */
X
X#define FALSE        0    /* Boolean FALSE */
X#define TRUE        1    /* Boolean TRUE */
X#define EOS        '\000'    /* End Of String marker */
X
X/*
X *    Manifest constants which may be "tuned" if desired.
X */
X
X#define PRINTBUF    1024    /* Print buffer size */
X#define INDENT        4    /* Indentation per trace level */
X#define MAXDEPTH    200    /* Maximum trace depth default */
X
X/*
X *    The following flags are used to determine which
X *    capabilities the user has enabled with the state
X *    push macro.
X */
X
X#define TRACE_ON    000001    /* Trace enabled */
X#define DEBUG_ON    000002    /* Debug enabled */
X#define FILE_ON     000004    /* File name print enabled */
X#define LINE_ON        000010    /* Line number print enabled */
X#define DEPTH_ON    000020    /* Function nest level print enabled */
X#define PROCESS_ON    000040    /* Process name print enabled */
X#define NUMBER_ON    000100    /* Number each line of output */
X#define PROFILE_ON    000200    /* Print out profiling code */
X
X#define TRACING (stack -> flags & TRACE_ON)
X#define DEBUGGING (stack -> flags & DEBUG_ON)
X#define PROFILING (stack -> flags & PROFILE_ON)
X#define STREQ(a,b) (strcmp(a,b) == 0)
X
X/*
X *    Typedefs to make things more obvious.
X */
X
X#define VOID void        /* Can't use typedef for most compilers */
Xtypedef int BOOLEAN;
X
X/*
X *    Make it easy to change storage classes if necessary.
X */
X
X#define LOCAL static        /* Names not needed by outside world */
X#define IMPORT extern        /* Names defined externally */
X#define EXPORT            /* Allocated here, available globally */
X#define AUTO auto        /* Names to be allocated on stack */
X#define REGISTER register    /* Names to be placed in registers */
X
X/*
X *    The following define is for the variable arguments kluge, see
X *    the comments in _db_doprnt_().
X *
X *    Also note that the longer this list, the less prone to failing
X *    on long argument lists, but the more stuff that must be moved
X *    around for each call to the runtime support routines.  The
X *    length may really be critical if the machine convention is
X *    to pass arguments in registers.
X *
X *    Note that the default define allows up to 16 integral arguments,
X *    or 8 floating point arguments (doubles), on most machines.
X *
X *    Someday this may be replaced with true varargs support, when
X *    ANSI C has had time to take root.
X */
X
X#define ARGLIST a0,a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15
X
X/*
X * The default file for profiling.  Could also add another flag
X * (G?) which allowed the user to specify this.
X */
X
X#define PROF_FILE    "dbugmon.out"
X
X/*
X *    Variables which are available externally but should only
X *    be accessed via the macro package facilities.
X */
X
XEXPORT FILE *_db_fp_ = stderr;        /* Output stream, default stderr */
XEXPORT FILE *_db_pfp_ = (FILE *)0;    /* Profile stream, 'dbugmon.out' */
XEXPORT char *_db_process_ = "dbug";    /* Pointer to process name; argv[0] */
XEXPORT BOOLEAN _db_on_ = FALSE;        /* TRUE if debugging currently on */
XEXPORT BOOLEAN _db_pon_ = FALSE;    /* TRUE if debugging currently on */
X
X/*
X *    Externally supplied functions.
X */
X
X#ifdef unix            /* Only needed for unix */
XIMPORT VOID perror ();        /* Print system/library error */
XIMPORT int chown ();        /* Change owner of a file */
XIMPORT int getgid ();        /* Get real group id */
XIMPORT int getuid ();        /* Get real user id */
XIMPORT int access ();        /* Test file for access */
X#else
X#if !(AMIGA && LATTICE)
XLOCAL VOID perror ();        /* Fake system/library error print routine */
X#endif
X#endif
X
X# if BSD4_3 || sun
XIMPORT int getrusage ();
X#endif
X
XIMPORT int atoi ();        /* Convert ascii to integer */
XIMPORT VOID exit ();        /* Terminate execution */
XIMPORT int fclose ();        /* Close a stream */
XIMPORT FILE *fopen ();        /* Open a stream */
XIMPORT int fprintf ();        /* Formatted print on file */
XIMPORT VOID free ();
XIMPORT char *malloc ();        /* Allocate memory */
XIMPORT int strcmp ();        /* Compare strings */
XIMPORT char *strcpy ();        /* Copy strings around */
XIMPORT int strlen ();        /* Find length of string */
X
X#ifndef fflush            /* This is sometimes a macro */
XIMPORT int fflush ();        /* Flush output for stream */
X#endif
X
X
X/*
X *    The user may specify a list of functions to trace or
X *    debug.  These lists are kept in a linear linked list,
X *    a very simple implementation.
X */
X
Xstruct link {
X    char *string;        /* Pointer to link's contents */
X    struct link *next_link;    /* Pointer to the next link */
X};
X
X
X/*
X *    Debugging states can be pushed or popped off of a
X *    stack which is implemented as a linked list.  Note
X *    that the head of the list is the current state and the
X *    stack is pushed by adding a new state to the head of the
X *    list or popped by removing the first link.
X */
X
Xstruct state {
X    int flags;                /* Current state flags */
X    int maxdepth;            /* Current maximum trace depth */
X    unsigned int delay;            /* Delay after each output line */
X    int level;                /* Current function nesting level */
X    FILE *out_file;            /* Current output stream */
X    FILE *prof_file;            /* Current profiling stream */
X    struct link *functions;        /* List of functions */
X    struct link *p_functions;        /* List of profiled functions */
X    struct link *keywords;        /* List of debug keywords */
X    struct link *processes;        /* List of process names */
X    struct state *next_state;        /* Next state in the list */
X};
X
XLOCAL struct state *stack = NULL;    /* Linked list of stacked states */
X
X/*
X *    Local variables not seen by user.
X */
X
XLOCAL int lineno = 0;        /* Current debugger output line number */
XLOCAL char *func = "?func";    /* Name of current user function */
XLOCAL char *file = "?file";    /* Name of current user file */
XLOCAL BOOLEAN init_done = FALSE;/* Set to TRUE when initialization done */
X
X/*#if unix || AMIGA || M_I86*/
XLOCAL int jmplevel;        /* Remember nesting level at setjmp () */
XLOCAL char *jmpfunc;        /* Remember current function for setjmp */
XLOCAL char *jmpfile;        /* Remember current file for setjmp */
X/*#endif*/
X
XLOCAL struct link *ListParse ();/* Parse a debug command string */
XLOCAL char *StrDup ();        /* Make a fresh copy of a string */
XLOCAL VOID OpenFile ();        /* Open debug output stream */
XLOCAL VOID OpenProfile ();    /* Open profile output stream */
XLOCAL VOID CloseFile ();    /* Close debug output stream */
XLOCAL VOID PushState ();    /* Push current debug state */
XLOCAL VOID ChangeOwner ();    /* Change file owner and group */
XLOCAL BOOLEAN DoTrace ();    /* Test for tracing enabled */
XLOCAL BOOLEAN Writable ();    /* Test to see if file is writable */
XLOCAL unsigned long Clock ();    /* Return current user time (ms) */
XLOCAL char *DbugMalloc ();    /* Allocate memory for runtime support */
XLOCAL char *BaseName ();    /* Remove leading pathname components */
XLOCAL VOID DoPrefix ();        /* Print debugger line prefix */
XLOCAL VOID FreeList ();        /* Free memory from linked list */
XLOCAL VOID Indent ();        /* Indent line to specified indent */
X
X                /* Supplied in Sys V runtime environ */
XLOCAL char *strtok ();        /* Break string into tokens */
XLOCAL char *strrchr ();        /* Find last occurance of char */
X
X/*
X *    The following local variables are used to hold the state information
X *    between the call to _db_pargs_() and _db_doprnt_(), during
X *    expansion of the DBUG_PRINT macro.  This is the only macro
X *    that currently uses these variables.  The DBUG_PRINT macro
X *    and the new _db_doprnt_() routine replace the older DBUG_N macros
X *    and their corresponding runtime support routine _db_printf_().
X *
X *    These variables are currently used only by _db_pargs_() and
X *    _db_doprnt_().
X */
X
XLOCAL int u_line = 0;        /* User source code line number */
XLOCAL char *u_keyword = "?";    /* Keyword for current macro */
X
X/*
X *    Miscellaneous printf format strings.
X */
X
X#define ERR_MISSING_RETURN "%s: missing DBUG_RETURN or DBUG_VOID_RETURN macro in function \"%s\"\n"
X#define ERR_OPEN "%s: can't open debug output stream \"%s\": "
X#define ERR_CLOSE "%s: can't close debug file: "
X#define ERR_ABORT "%s: debugger aborting because %s\n"
X#define ERR_CHOWN "%s: can't change owner/group of \"%s\": "
X#define ERR_PRINTF "%s: obsolete object file for '%s', please recompile!\n"
X
X/*
X *    Macros and defines for testing file accessibility under UNIX.
X */
X
X#ifdef unix
X#  define A_EXISTS    00        /* Test for file existance */
X#  define A_EXECUTE    01        /* Test for execute permission */
X#  define A_WRITE    02        /* Test for write access */
X#  define A_READ    03        /* Test for read access */
X#  define EXISTS(pathname) (access (pathname, A_EXISTS) == 0)
X#  define WRITABLE(pathname) (access (pathname, A_WRITE) == 0)
X#else
X#  define EXISTS(pathname) (FALSE)    /* Assume no existance */
X#endif
X
X/*
X *    Translate some calls among different systems.
X */
X
X#ifdef unix
X# define XDelay sleep
XIMPORT unsigned int sleep ();    /* Pause for given number of seconds */
X#endif
X
X#ifdef AMIGA
XIMPORT int XDelay ();        /* Pause for given number of ticks */
X#endif
X
X
X/*
X *  FUNCTION
X *
X *    _db_push_    push current debugger state and set up new one
X *
X *  SYNOPSIS
X *
X *    VOID _db_push_ (control)
X *    char *control;
X *
X *  DESCRIPTION
X *
X *    Given pointer to a debug control string in "control", pushes
X *    the current debug state, parses the control string, and sets
X *    up a new debug state.
X *
X *    The only attribute of the new state inherited from the previous
X *    state is the current function nesting level.  This can be
X *    overridden by using the "r" flag in the control string.
X *
X *    The debug control string is a sequence of colon separated fields
X *    as follows:
X *
X *        <field_1>:<field_2>:...:<field_N>
X *
X *    Each field consists of a mandatory flag character followed by
X *    an optional "," and comma separated list of modifiers:
X *
X *        flag[,modifier,modifier,...,modifier]
X *
X *    The currently recognized flag characters are:
X *
X *        d    Enable output from DBUG_<N> macros for
X *            for the current state.  May be followed
X *            by a list of keywords which selects output
X *            only for the DBUG macros with that keyword.
X *            A null list of keywords implies output for
X *            all macros.
X *
X *        D    Delay after each debugger output line.
X *            The argument is the number of tenths of seconds
X *            to delay, subject to machine capabilities.
X *            I.E.  -#D,20 is delay two seconds.
X *
X *        f    Limit debugging and/or tracing, and profiling to the
X *            list of named functions.  Note that a null list will
X *            disable all functions.  The appropriate "d" or "t"
X *            flags must still be given, this flag only limits their
X *            actions if they are enabled.
X *
X *        F    Identify the source file name for each
X *            line of debug or trace output.
X *
X *        g    Enable profiling.  Create a file called 'dbugmon.out'
X *            containing information that can be used to profile
X *            the program.  May be followed by a list of keywords
X *            that select profiling only for the functions in that
X *            list.  A null list implies that all functions are
X *            considered.
X *
X *        L    Identify the source file line number for
X *            each line of debug or trace output.
X *
X *        n    Print the current function nesting depth for
X *            each line of debug or trace output.
X *
X *        N    Number each line of dbug output.
X *
X *        p    Limit debugger actions to specified processes.
X *            A process must be identified with the
X *            DBUG_PROCESS macro and match one in the list
X *            for debugger actions to occur.
X *
X *        P    Print the current process name for each
X *            line of debug or trace output.
X *
X *        r    When pushing a new state, do not inherit
X *            the previous state's function nesting level.
X *            Useful when the output is to start at the
X *            left margin.
X *
X *        t    Enable function call/exit trace lines.
X *            May be followed by a list (containing only
X *            one modifier) giving a numeric maximum
X *            trace level, beyond which no output will
X *            occur for either debugging or tracing
X *            macros.  The default is a compile time
X *            option.
X *
X *    Some examples of debug control strings which might appear
X *    on a shell command line (the "-#" is typically used to
X *    introduce a control string to an application program) are:
X *
X *        -#d:t
X *        -#d:f,main,subr1:F:L:t,20
X *        -#d,input,output,files:n
X *
X *    For convenience, any leading "-#" is stripped off.
X *
X */
X
X
XVOID _db_push_ (control)
Xchar *control;
X{
X    REGISTER char *scan;
X    REGISTER struct link *temp;
X
X    if (control && *control == '-') {
X    if (*++control == '#') {
X        control++;
X    }
X    }
X    control = StrDup (control);
X    PushState ();
X    scan = strtok (control, ":");
X    for (; scan != NULL; scan = strtok ((char *)NULL, ":")) {
X    switch (*scan++) {
X        case 'd':
X        _db_on_ = TRUE;
X        stack -> flags |= DEBUG_ON;
X        if (*scan++ == ',') {
X            stack -> keywords = ListParse (scan);
X        }
X            break;
X        case 'D':
X        stack -> delay = 0;
X        if (*scan++ == ',') {
X            temp = ListParse (scan);
X            stack -> delay = DelayArg (atoi (temp -> string));
X            FreeList (temp);
X        }
X        break;
X        case 'f':
X        if (*scan++ == ',') {
X            stack -> functions = ListParse (scan);
X        }
X        break;
X        case 'F':
X        stack -> flags |= FILE_ON;
X        break;
X        case 'g':
X        _db_pon_ = TRUE;
X        OpenProfile(PROF_FILE);
X        stack -> flags |= PROFILE_ON;
X        if (*scan++ == ',') {
X            stack -> p_functions = ListParse (scan);
X        }
X        break;
X        case 'L':
X        stack -> flags |= LINE_ON;
X        break;
X        case 'n':
X        stack -> flags |= DEPTH_ON;
X        break;
X        case 'N':
X        stack -> flags |= NUMBER_ON;
X        break;
X        case 'o':
X        if (*scan++ == ',') {
X            temp = ListParse (scan);
X            OpenFile (temp -> string);
X            FreeList (temp);
X        } else {
X            OpenFile ("-");
X        }
X        break;
X        case 'p':
X        if (*scan++ == ',') {
X            stack -> processes = ListParse (scan);
X        }
X        break;
X        case 'P':
X        stack -> flags |= PROCESS_ON;
X        break;
X        case 'r':
X        stack -> level = 0;
X        break;
X        case 't':
X        stack -> flags |= TRACE_ON;
X        if (*scan++ == ',') {
X            temp = ListParse (scan);
X            stack -> maxdepth = atoi (temp -> string);
X            FreeList (temp);
X        }
X        break;
X    }
X    }
X    free (control);
X}
X
X
X
X/*
X *  FUNCTION
X *
X *    _db_pop_    pop the debug stack
X *
X *  DESCRIPTION
X *
X *    Pops the debug stack, returning the debug state to its
X *    condition prior to the most recent _db_push_ invocation.
X *    Note that the pop will fail if it would remove the last
X *    valid state from the stack.  This prevents user errors
X *    in the push/pop sequence from screwing up the debugger.
X *    Maybe there should be some kind of warning printed if the
X *    user tries to pop too many states.
X *
X */
X
XVOID _db_pop_ ()
X{
X    REGISTER struct state *discard;
X
X    discard = stack;
X    if (discard != NULL && discard -> next_state != NULL) {
X    stack = discard -> next_state;
X    _db_fp_ = stack -> out_file;
X    _db_pfp_ = stack -> prof_file;
X    if (discard -> keywords != NULL) {
X        FreeList (discard -> keywords);
X    }
X    if (discard -> functions != NULL) {
X        FreeList (discard -> functions);
X    }
X    if (discard -> processes != NULL) {
X        FreeList (discard -> processes);
X    }
X    if (discard -> p_functions != NULL) {
X        FreeList (discard -> p_functions);
X    }
X    CloseFile (discard -> out_file);
X    CloseFile (discard -> prof_file);
X    free ((char *) discard);
X    }
X}
X
X
X/*
X *  FUNCTION
X *
X *    _db_enter_    process entry point to user function
X *
X *  SYNOPSIS
X *
X *    VOID _db_enter_ (_func_, _file_, _line_, _sfunc_, _sfile_, _slevel_)
X *    char *_func_;        points to current function name
X *    char *_file_;        points to current file name
X *    int _line_;        called from source line number
X *    char **_sfunc_;        save previous _func_
X *    char **_sfile_;        save previous _file_
X *    int *_slevel_;        save previous nesting level
X *
X *  DESCRIPTION
X *
X *    Called at the beginning of each user function to tell
X *    the debugger that a new function has been entered.
X *    Note that the pointers to the previous user function
X *    name and previous user file name are stored on the
X *    caller's stack (this is why the ENTER macro must be
X *    the first "executable" code in a function, since it
X *    allocates these storage locations).  The previous nesting
X *    level is also stored on the callers stack for internal
X *    self consistency checks.
X *
X *    Also prints a trace line if tracing is enabled and
X *    increments the current function nesting depth.
X *
X *    Note that this mechanism allows the debugger to know
X *    what the current user function is at all times, without
X *    maintaining an internal stack for the function names.
X *
X */
X
XVOID _db_enter_ (_func_, _file_, _line_, _sfunc_, _sfile_, _slevel_)
Xchar *_func_;
Xchar *_file_;
Xint _line_;
Xchar **_sfunc_;
Xchar **_sfile_;
Xint *_slevel_;
X{
X    if (!init_done) {
X    _db_push_ ("");
X    }
X    *_sfunc_ = func;
X    *_sfile_ = file;
X    func = _func_;
X    file = BaseName (_file_);
X    stack -> level++;
X    *_slevel_ = stack -> level;
X    if (DoProfile ()) {
X    (VOID) fprintf (_db_pfp_, "%s\tE\t%ld\n",func, Clock());
X    (VOID) fflush (_db_pfp_);
X    }
X    if (DoTrace ()) {
X    DoPrefix (_line_);
X    Indent (stack -> level);
X    (VOID) fprintf (_db_fp_, ">%s\n", func);
X    (VOID) fflush (_db_fp_);
X    (VOID) XDelay (stack -> delay);
X    }
X}
X
X
X/*
X *  FUNCTION
X *
X *    _db_return_    process exit from user function
X *
X *  SYNOPSIS
X *
X *    VOID _db_return_ (_line_, _sfunc_, _sfile_, _slevel_)
X *    int _line_;        current source line number
X *    char **_sfunc_;        where previous _func_ is to be retrieved
X *    char **_sfile_;        where previous _file_ is to be retrieved
X *    int *_slevel_;        where previous level was stashed
X *
X *  DESCRIPTION
X *
X *    Called just before user function executes an explicit or implicit
X *    return.  Prints a trace line if trace is enabled, decrements
X *    the current nesting level, and restores the current function and
X *    file names from the defunct function's stack.
X *
X */
X
XVOID _db_return_ (_line_, _sfunc_, _sfile_, _slevel_)
Xint _line_;
Xchar **_sfunc_;
Xchar **_sfile_;
Xint *_slevel_;
X{
X    if (!init_done) {
X    _db_push_ ("");
X    }
X    if (stack -> level != *_slevel_ && (TRACING || DEBUGGING || PROFILING)) {
X    (VOID) fprintf (_db_fp_, ERR_MISSING_RETURN, _db_process_, func);
X        (VOID) XDelay (stack -> delay);
X    } else if (DoProfile ()) {
X    (VOID) fprintf (_db_pfp_, "%s\tX\t%ld\n", func, Clock());
X        (VOID) XDelay (stack -> delay);
X    } else if (DoTrace ()) {
X    DoPrefix (_line_);
X    Indent (stack -> level);
X    (VOID) fprintf (_db_fp_, "<%s\n", func);
X        (VOID) XDelay (stack -> delay);
X    }
X    (VOID) fflush (_db_fp_);
X    stack -> level = *_slevel_ - 1;
X    func = *_sfunc_;
X    file = *_sfile_;
X}
X
X
X/*
X *  FUNCTION
X *
X *    _db_pargs_    log arguments for subsequent use by _db_doprnt_()
X *
X *  SYNOPSIS
X *
X *    VOID _db_pargs_ (_line_, keyword)
X *    int _line_;
X *    char *keyword;
X *
X *  DESCRIPTION
X *
X *    The new universal printing macro DBUG_PRINT, which replaces
X *    all forms of the DBUG_N macros, needs two calls to runtime
X *    support routines.  The first, this function, remembers arguments
X *    that are used by the subsequent call to _db_doprnt_().
X*
X */
X
XVOID _db_pargs_ (_line_, keyword)
Xint _line_;
Xchar *keyword;
X{
X    u_line = _line_;
X    u_keyword = keyword;
X}
X
X
X/*
X *  FUNCTION
X *
X *    _db_doprnt_    handle print of debug lines
X *
X *  SYNOPSIS
X *
X *    VOID _db_doprnt_ (format, ARGLIST)
X *    char *format;
X *    long ARGLIST;
X *
X *  DESCRIPTION
X *
X *    When invoked via one of the DBUG macros, tests the current keyword
X *    set by calling _db_pargs_() to see if that macro has been selected
X *    for processing via the debugger control string, and if so, handles
X *    printing of the arguments via the format string.  The line number
X *    of the DBUG macro in the source is found in u_line.
X *
X *    Note that the format string SHOULD NOT include a terminating
X *    newline, this is supplied automatically.
X *
X *  NOTES
X *
X *    This runtime support routine replaces the older _db_printf_()
X *    routine which is temporarily kept around for compatibility.
X *
X *    The rather ugly argument declaration is to handle some
X *    magic with respect to the number of arguments passed
X *    via the DBUG macros.  The current maximum is 3 arguments
X *    (not including the keyword and format strings).
X *
X *    The new <varargs.h> facility is not yet common enough to
X *    convert to it quite yet...
X *
X */
X
X/*VARARGS1*/
XVOID _db_doprnt_ (format, ARGLIST)
Xchar *format;
Xlong ARGLIST;
X{
X    if (_db_keyword_ (u_keyword)) {
X    DoPrefix (u_line);
X    if (TRACING) {
X        Indent (stack -> level + 1);
X    } else {
X        (VOID) fprintf (_db_fp_, "%s: ", func);
X    }
X    (VOID) fprintf (_db_fp_, "%s: ", u_keyword);
X    (VOID) fprintf (_db_fp_, format, ARGLIST);
X    (VOID) fprintf (_db_fp_, "\n");
X    (VOID) fflush (_db_fp_);
X    (VOID) XDelay (stack -> delay);
X    }
X}
X
X/*
X *    The following routine is kept around temporarily for compatibility
X *    with older objects that were compiled with the DBUG_N macro form
X *    of the print routine.  It will print a warning message on first
X *    usage.  It will go away in subsequent releases...
X */
X
X/*VARARGS3*/
XVOID _db_printf_ (_line_, keyword, format, ARGLIST)
Xint _line_;
Xchar *keyword,  *format;
Xlong ARGLIST;
X{
X    static BOOLEAN firsttime = TRUE;
X
X    if (firsttime) {
X    (VOID) fprintf (stderr, ERR_PRINTF, _db_process_, file);
X    firsttime = FALSE;
X    }
X    _db_pargs_ (_line_, keyword);
X    _db_doprnt_ (format, ARGLIST);
X}
X
X
X/*
X *  FUNCTION
X *
X *    ListParse    parse list of modifiers in debug control string
X *
X *  SYNOPSIS
X *
X *    LOCAL struct link *ListParse (ctlp)
X *    char *ctlp;
X *
X *  DESCRIPTION
X *
X *    Given pointer to a comma separated list of strings in "cltp",
X *    parses the list, building a list and returning a pointer to it.
X *    The original comma separated list is destroyed in the process of
X *    building the linked list, thus it had better be a duplicate
X *    if it is important.
X *
X *    Note that since each link is added at the head of the list,
X *    the final list will be in "reverse order", which is not
X *    significant for our usage here.
X *
X */
X
XLOCAL struct link *ListParse (ctlp)
Xchar *ctlp;
X{
X    REGISTER char *start;
X    REGISTER struct link *new;
X    REGISTER struct link *head;
X
X    head = NULL;
SHAR_EOF
echo "End of part 19"
echo "File common/dbug.c is continued in part 20"
echo "20" > s2_seq_.tmp
exit 0