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Annotation of 3BSD/cmd/pxp/0.h, revision 1.1

1.1     ! root        1: /* Copyright (c) 1979 Regents of the University of California */
        !             2: /* #define DEBUG */
        !             3: #define        CHAR
        !             4: #define        STATIC
        !             5: /*
        !             6:  * pxp - Pascal execution profiler
        !             7:  *
        !             8:  * Bill Joy
        !             9:  * University of California, Berkeley (UCB)
        !            10:  * Version 1.1 February 1978
        !            11:  */
        !            12: 
        !            13: /*
        !            14:  * Option flags
        !            15:  *
        !            16:  * The following options are recognized on the command line by pxp.
        !            17:  * Only the u, w, and z options here have effect in comments in the
        !            18:  * program; the others are command line only, and unrelated
        !            19:  * to the options with the same designations in comments.
        !            20:  *
        !            21:  *     a       Print all routines in a profile; normally, routines
        !            22:  *             which have never been executed have their bodies suppressed.
        !            23:  *
        !            24:  *     c       Extract profile data from the file core, or the file
        !            25:  *             named after the last argument rather than the file 'pmon.out'.
        !            26:  *             Must be used with z to have an effect.
        !            27:  *
        !            28:  *     d       Suppress declarations
        !            29:  *
        !            30:  *     f       Fully parenthesize expressions.
        !            31:  *
        !            32:  *     j       Left justify all procedures and functions rather than
        !            33:  *             indenting them.
        !            34:  *
        !            35:  *     n       Eject a new page in the listing as each 'include' file
        !            36:  *             is incorporated into the profile.
        !            37:  *
        !            38:  *     o       Put output prettyprint in first argument file
        !            39:  *
        !            40:  *     p       Pretty print a main program without processing
        !            41:  *             the include statements.
        !            42:  *
        !            43:  *     t       Print a table summarizing procedure and function call counts.
        !            44:  *
        !            45:  *     u       Card image mode; only the first 72 chars on a line count.
        !            46:  *
        !            47:  *     w       Suppress certain warning diagnostics.
        !            48:  *
        !            49:  *     z       Generate an execution profile of the program.
        !            50:  *             May also be followed by a list of procedure and function
        !            51:  *             names mixed, if desired, with include file names.
        !            52:  *             Only these procedures and functions, and the contents
        !            53:  *             of the specified include files will then be profiled.
        !            54:  *
        !            55:  *  [23456789] Use the specified number of spaces for the basic
        !            56:  *             indenting unit in the program.
        !            57:  *
        !            58:  *     _       Underline keywords in the output.
        !            59:  */
        !            60: 
        !            61: char   all, core, nodecl, full, justify, pmain, stripcomm, table, underline;
        !            62: char   profile, onefile;
        !            63: char   *firstname, *stdoutn;
        !            64: #ifdef DEBUG
        !            65: char   fulltrace, errtrace, testtrace, yyunique, typetest;
        !            66: #endif
        !            67: int    unit;
        !            68: 
        !            69: /*
        !            70:  * The flag nojunk means that header lines
        !            71:  * of procedures and functions are to be suppressed
        !            72:  * when the z option is off.
        !            73:  * It is the default when command line z option
        !            74:  * control is specified.
        !            75:  *
        !            76:  * The flag noinclude indicates that include statements are not
        !            77:  * to be processed since we are pretty-printing the contents
        !            78:  * of a single file.
        !            79:  *
        !            80:  * The flag bracket indicates that the source code should be
        !            81:  * bracketed with lines of the form
        !            82:  *     program x(output);
        !            83:  * and
        !            84:  *     begin end.
        !            85:  * so that an include will pretty print without syntax errors.
        !            86:  */
        !            87: char   nojunk, noinclude, bracket;
        !            88: 
        !            89: /*
        !            90:  * IMPORTANT NOTE
        !            91:  *
        !            92:  * Many of the following globals are shared by pi and pxp.
        !            93:  * For more discussion of these see the available documentation
        !            94:  * on the structure of pi.
        !            95:  */
        !            96: 
        !            97: /*
        !            98:  * Each option has a stack of 17 option values, with opts giving
        !            99:  * the current, top value, and optstk the value beneath it.
        !           100:  * One refers to option `l' as, e.g., opt('l') in the text for clarity.
        !           101:  */
        !           102: char   opts[26];
        !           103: int    optstk[26];
        !           104: 
        !           105: #define opt(c) opts[c-'a']
        !           106: 
        !           107: /*
        !           108:  * NOTES ON THE DYNAMIC NATURE OF THE DATA STRUCTURES
        !           109:  *
        !           110:  * Pxp uses expandable tables for its string table
        !           111:  * hash table, and parse tree space.  The following
        !           112:  * definitions specify the size of the increments
        !           113:  * for these items in fundamental units so that
        !           114:  * each uses approximately 1024 bytes.
        !           115:  */
        !           116: 
        !           117: #define        STRINC  1024            /* string space increment */
        !           118: #define        TRINC   512             /* tree space increment */
        !           119: #define        HASHINC 509             /* hash table size in words, each increment */
        !           120: 
        !           121: /*
        !           122:  * The initial sizes of the structures.
        !           123:  * These should be large enough to profile
        !           124:  * an "average" sized program so as to minimize
        !           125:  * storage requests.
        !           126:  * On a small system or and 11/34 or 11/40
        !           127:  * these numbers can be trimmed to make the
        !           128:  * profiler smaller.
        !           129:  */
        !           130: #define        ITREE   2000
        !           131: #define        IHASH   509
        !           132: 
        !           133: /*
        !           134:  * The following limits on hash and tree tables currently
        !           135:  * allow approximately 1200 symbols and 20k words of tree
        !           136:  * space.  The fundamental limit of 64k total data space
        !           137:  * should be exceeded well before these are full.
        !           138:  */
        !           139: #define        MAXHASH 4
        !           140: #define        MAXTREE 30
        !           141: #define        MAXDEPTH 150
        !           142: 
        !           143: /*
        !           144:  * ERROR RELATED DEFINITIONS
        !           145:  */
        !           146: 
        !           147: /*
        !           148:  * Exit statuses to pexit
        !           149:  *
        !           150:  * AOK
        !           151:  * ERRS                Compilation errors inhibit obj productin
        !           152:  * NOSTART     Errors before we ever got started
        !           153:  * DIED                We ran out of memory or some such
        !           154:  */
        !           155: #define        AOK     0
        !           156: #define        ERRS    1
        !           157: #define        NOSTART 2
        !           158: #define        DIED    3
        !           159: 
        !           160: char   Recovery;
        !           161: /*
        !           162:  * The flag eflg is set whenever we have a hard error.
        !           163:  * The character in errpfx will precede the next error message.
        !           164:  */
        !           165: int    eflg;
        !           166: char   errpfx;
        !           167: 
        !           168: #define        setpfx(x)       errpfx = x
        !           169: 
        !           170: #define        standard()      setpfx('s')
        !           171: #define        warning()       setpfx('w')
        !           172: #define        recovered()     setpfx('e')
        !           173: #define        quit()          setpfx('Q')
        !           174: 
        !           175: /*
        !           176:  * SEMANTIC DEFINITIONS
        !           177:  */
        !           178: 
        !           179: #define        NIL     0
        !           180: 
        !           181: /*
        !           182:  * NOCON and SAWCON are flags in the tree telling whether
        !           183:  * a constant set is part of an expression.
        !           184:  */
        !           185: #define        NOCON   0
        !           186: #define        SAWCON  1
        !           187: 
        !           188: /*
        !           189:  * The variable cbn gives the current block number.
        !           190:  * The variable lastbn gives the block number before
        !           191:  * it last changed and is used to know that we were
        !           192:  * in a nested procedure so that we can print
        !           193:  *     begin { solve }
        !           194:  * when solve has nested procedures or functions in it.
        !           195:  */
        !           196: int    cbn, lastbn;
        !           197: 
        !           198: /*
        !           199:  * The variable line is the current semantic
        !           200:  * line and is set in stat.c from the numbers
        !           201:  * embedded in statement type tree nodes.
        !           202:  */
        !           203: int    line;
        !           204: 
        !           205: /*
        !           206:  * The size of the display
        !           207:  * which defines the maximum nesting
        !           208:  * of procedures and functions allowed.
        !           209:  */
        !           210: #define        DSPLYSZ 20
        !           211: 
        !           212: /*
        !           213:  * Routines which need types
        !           214:  * other than "integer" to be
        !           215:  * assumed by the compiler.
        !           216:  */
        !           217: int    *tree();
        !           218: int    *hash();
        !           219: char   *alloc();
        !           220: long   cntof();
        !           221: long   nowcnt();
        !           222: 
        !           223: /*
        !           224:  * Funny structures to use
        !           225:  * pointers in wild and wooly ways
        !           226:  */
        !           227: struct {
        !           228:        char    pchar;
        !           229: };
        !           230: struct {
        !           231:        int     pint;
        !           232:        int     pint2;
        !           233: };
        !           234: struct {
        !           235:        long    plong;
        !           236: };
        !           237: struct {
        !           238:        double  pdouble;
        !           239: };
        !           240: 
        !           241: #define        OCT     1
        !           242: #define        HEX     2
        !           243: 
        !           244: /*
        !           245:  * MAIN PROGRAM GLOBALS, MISCELLANY
        !           246:  */
        !           247: 
        !           248: /*
        !           249:  * Variables forming a data base referencing
        !           250:  * the command line arguments with the "z" option.
        !           251:  */
        !           252: char   **pflist;
        !           253: int    pflstc;
        !           254: int    pfcnt;
        !           255: 
        !           256: char   *filename;              /* current source file name */
        !           257: char   *lastname;              /* last file name printed */
        !           258: long   tvec;                   /* mod time of the source file */
        !           259: long   ptvec;                  /* time profiled */
        !           260: char   printed;                /* current file has been printed */
        !           261: char   hadsome;                /* had some output */
        !           262: 
        !           263: /*
        !           264:  * PROFILING AND FORMATTING DEFINITIONS
        !           265:  */
        !           266: 
        !           267: /*
        !           268:  * The basic counter information recording structure.
        !           269:  * This is global only because people outside
        !           270:  * the cluster in pmon.c need to know its size.
        !           271:  */
        !           272: struct pxcnt {
        !           273:        long    ntimes;         /* the count this structure is all about */
        !           274:        int     counter;        /* a unique counter number for us */
        !           275:        int     gos;            /* global goto count when we hatched */
        !           276:        int     printed;        /* are we considered to have been printed? */
        !           277: } pfcnts[DSPLYSZ];
        !           278: 
        !           279: /*
        !           280:  * The pieces we divide the output line indents into:
        !           281:  *     line#  PRFN  label:   STAT  999.---|  DECL   text
        !           282:  */
        !           283: #define        STAT    0
        !           284: #define        DECL    1
        !           285: #define        PRFN    2
        !           286: 
        !           287: /*
        !           288:  * Gocnt records the total number of goto's and
        !           289:  * cnts records the current counter for generating
        !           290:  * COUNT operators.
        !           291:  */
        !           292: int    gocnt;
        !           293: int    cnts;
        !           294: 
        !           295: #include <stdio.h>
        !           296: 
        !           297: #undef putchar

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