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Annotation of 43BSD/ucb/pascal/pxp/0.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  *
        !             6:  *     @(#)0.h 5.1 (Berkeley) 6/5/85
        !             7:  */
        !             8: 
        !             9: /* #define DEBUG */
        !            10: #define        CHAR
        !            11: #define        STATIC
        !            12: /*
        !            13:  * pxp - Pascal execution profiler
        !            14:  *
        !            15:  * Bill Joy
        !            16:  * University of California, Berkeley (UCB)
        !            17:  * Version 1.1 February 1978
        !            18:  */
        !            19: 
        !            20: /*
        !            21:  * Option flags
        !            22:  *
        !            23:  * The following options are recognized on the command line by pxp.
        !            24:  * Only the u, w, and z options here have effect in comments in the
        !            25:  * program; the others are command line only, and unrelated
        !            26:  * to the options with the same designations in comments.
        !            27:  *
        !            28:  *     a       Print all routines in a profile; normally, routines
        !            29:  *             which have never been executed have their bodies suppressed.
        !            30:  *
        !            31:  *     c       Extract profile data from the file core, or the file
        !            32:  *             named after the last argument rather than the file 'pmon.out'.
        !            33:  *             Must be used with z to have an effect.
        !            34:  *
        !            35:  *     d       Suppress declarations
        !            36:  *
        !            37:  *     f       Fully parenthesize expressions.
        !            38:  *
        !            39:  *     j       Left justify all procedures and functions rather than
        !            40:  *             indenting them.
        !            41:  *
        !            42:  *     n       Eject a new page in the listing as each 'include' file
        !            43:  *             is incorporated into the profile.
        !            44:  *
        !            45:  *     o       Put output prettyprint in first argument file
        !            46:  *
        !            47:  *     p       Pretty print a main program without processing
        !            48:  *             the include statements.
        !            49:  *
        !            50:  *     t       Print a table summarizing procedure and function call counts.
        !            51:  *
        !            52:  *     u       Card image mode; only the first 72 chars on a line count.
        !            53:  *
        !            54:  *     w       Suppress certain warning diagnostics.
        !            55:  *
        !            56:  *     z       Generate an execution profile of the program.
        !            57:  *             May also be followed by a list of procedure and function
        !            58:  *             names mixed, if desired, with include file names.
        !            59:  *             Only these procedures and functions, and the contents
        !            60:  *             of the specified include files will then be profiled.
        !            61:  *
        !            62:  *  [23456789] Use the specified number of spaces for the basic
        !            63:  *             indenting unit in the program.
        !            64:  *
        !            65:  *     _       Underline keywords in the output.
        !            66:  *
        !            67:  *     O       remove `others'.  if an `others' label is found in a
        !            68:  *             case statement the case statement (minus the others case)
        !            69:  *             is printed as a guarded case statement, and the others case
        !            70:  *             is the else branch of the guard.  this transformation
        !            71:  *             causes the case selector to be evaluated twice, a lose
        !            72:  *             if the selector has side-effects.  this option is only
        !            73:  *             available if pxp is compiled with RMOTHERS defined.
        !            74:  */
        !            75: 
        !            76: char   all, core, nodecl, full, justify, pmain, stripcomm, table, underline;
        !            77: char   profile, onefile;
        !            78: #ifdef RMOTHERS
        !            79: char   rmothers;
        !            80: #endif RMOTHERS
        !            81: char   *firstname, *stdoutn;
        !            82: #ifdef DEBUG
        !            83: char   fulltrace, errtrace, testtrace, yyunique, typetest;
        !            84: #endif
        !            85: int    unit;
        !            86: 
        !            87: /*
        !            88:  * The flag nojunk means that header lines
        !            89:  * of procedures and functions are to be suppressed
        !            90:  * when the z option is off.
        !            91:  * It is the default when command line z option
        !            92:  * control is specified.
        !            93:  *
        !            94:  * The flag noinclude indicates that include statements are not
        !            95:  * to be processed since we are pretty-printing the contents
        !            96:  * of a single file.
        !            97:  *
        !            98:  * The flag bracket indicates that the source code should be
        !            99:  * bracketed with lines of the form
        !           100:  *     program x(output);
        !           101:  * and
        !           102:  *     begin end.
        !           103:  * so that an include will pretty print without syntax errors.
        !           104:  */
        !           105: char   nojunk, noinclude, bracket;
        !           106: 
        !           107: /*
        !           108:  * IMPORTANT NOTE
        !           109:  *
        !           110:  * Many of the following globals are shared by pi and pxp.
        !           111:  * For more discussion of these see the available documentation
        !           112:  * on the structure of pi.
        !           113:  */
        !           114: 
        !           115: /*
        !           116:  * Each option has a stack of 17 option values, with opts giving
        !           117:  * the current, top value, and optstk the value beneath it.
        !           118:  * One refers to option `l' as, e.g., opt('l') in the text for clarity.
        !           119:  */
        !           120: char   opts[26];
        !           121: int    optstk[26];
        !           122: 
        !           123: #define opt(c) opts[c-'a']
        !           124: 
        !           125: /*
        !           126:  * NOTES ON THE DYNAMIC NATURE OF THE DATA STRUCTURES
        !           127:  *
        !           128:  * Pxp uses expandable tables for its string table
        !           129:  * hash table, and parse tree space.  The following
        !           130:  * definitions specify the size of the increments
        !           131:  * for these items in fundamental units so that
        !           132:  * each uses approximately 1024 bytes.
        !           133:  */
        !           134: 
        !           135: #define        STRINC  1024            /* string space increment */
        !           136: #define        TRINC   1024            /* tree space increment */
        !           137: #define        HASHINC 509             /* hash table size in words, each increment */
        !           138: 
        !           139: /*
        !           140:  * The initial sizes of the structures.
        !           141:  * These should be large enough to profile
        !           142:  * an "average" sized program so as to minimize
        !           143:  * storage requests.
        !           144:  * On a small system or and 11/34 or 11/40
        !           145:  * these numbers can be trimmed to make the
        !           146:  * profiler smaller.
        !           147:  */
        !           148: #define        ITREE   2000
        !           149: #define        IHASH   509
        !           150: 
        !           151: /*
        !           152:  * The following limits on hash and tree tables currently
        !           153:  * allow approximately 1200 symbols and 20k words of tree
        !           154:  * space.  The fundamental limit of 64k total data space
        !           155:  * should be exceeded well before these are full.
        !           156:  */
        !           157: /*
        !           158:  * TABLE_MULTIPLIER is for uniformly increasing the sizes of the tables
        !           159:  */
        !           160: #ifdef ADDR32
        !           161: #define TABLE_MULTIPLIER       8
        !           162: #endif ADDR32
        !           163: #ifdef ADDR16
        !           164: #define TABLE_MULTIPLIER       1
        !           165: #endif ADDR16
        !           166: #define        MAXHASH (4 * TABLE_MULTIPLIER)
        !           167: #define        MAXTREE (40 * TABLE_MULTIPLIER)
        !           168: /*
        !           169:  * MAXDEPTH is the depth of the parse stack.
        !           170:  * STACK_MULTIPLIER is for increasing its size.
        !           171:  */
        !           172: #ifdef ADDR32
        !           173: #define        STACK_MULTIPLIER        8
        !           174: #endif ADDR32
        !           175: #ifdef ADDR16
        !           176: #define        STACK_MULTIPLIER        1
        !           177: #endif ADDR16
        !           178: #define        MAXDEPTH ( 150 * STACK_MULTIPLIER )
        !           179: 
        !           180: /*
        !           181:  * ERROR RELATED DEFINITIONS
        !           182:  */
        !           183: 
        !           184: /*
        !           185:  * Exit statuses to pexit
        !           186:  *
        !           187:  * AOK
        !           188:  * ERRS                Compilation errors inhibit obj productin
        !           189:  * NOSTART     Errors before we ever got started
        !           190:  * DIED                We ran out of memory or some such
        !           191:  */
        !           192: #define        AOK     0
        !           193: #define        ERRS    1
        !           194: #define        NOSTART 2
        !           195: #define        DIED    3
        !           196: 
        !           197: char   Recovery;
        !           198: /*
        !           199:  * The flag eflg is set whenever we have a hard error.
        !           200:  * The character in errpfx will precede the next error message.
        !           201:  */
        !           202: int    eflg;
        !           203: char   errpfx;
        !           204: 
        !           205: #define        setpfx(x)       errpfx = x
        !           206: 
        !           207: #define        standard()      setpfx('s')
        !           208: #define        warning()       setpfx('w')
        !           209: #define        recovered()     setpfx('e')
        !           210: #define        quit()          setpfx('Q')
        !           211: #define        continuation()  setpfx(' ')
        !           212: 
        !           213: /*
        !           214:  * SEMANTIC DEFINITIONS
        !           215:  */
        !           216: 
        !           217: #define        NIL     0
        !           218: 
        !           219: /*
        !           220:  * NOCON and SAWCON are flags in the tree telling whether
        !           221:  * a constant set is part of an expression.
        !           222:  */
        !           223: #define        NOCON   0
        !           224: #define        SAWCON  1
        !           225: 
        !           226: /*
        !           227:  * The variable cbn gives the current block number.
        !           228:  * The variable lastbn gives the block number before
        !           229:  * it last changed and is used to know that we were
        !           230:  * in a nested procedure so that we can print
        !           231:  *     begin { solve }
        !           232:  * when solve has nested procedures or functions in it.
        !           233:  */
        !           234: int    cbn, lastbn;
        !           235: 
        !           236: /*
        !           237:  * The variable line is the current semantic
        !           238:  * line and is set in stat.c from the numbers
        !           239:  * embedded in statement type tree nodes.
        !           240:  */
        !           241: int    line;
        !           242: 
        !           243: /*
        !           244:  * The size of the display
        !           245:  * which defines the maximum nesting
        !           246:  * of procedures and functions allowed.
        !           247:  */
        !           248: #define        DSPLYSZ 20
        !           249: 
        !           250: /*
        !           251:  * Routines which need types
        !           252:  * other than "integer" to be
        !           253:  * assumed by the compiler.
        !           254:  */
        !           255: struct tnode   *tree();
        !           256: char           *skipbl();
        !           257: int    *hash();
        !           258: char   *alloc();
        !           259: long   cntof();
        !           260: long   nowcnt();
        !           261: 
        !           262: /*
        !           263:  *     type cast nils to keep lint happy.
        !           264:  */
        !           265: #define        TR_NIL  ((struct tnode *) NIL)
        !           266: 
        !           267: /*
        !           268:  * Funny structures to use
        !           269:  * pointers in wild and wooly ways
        !           270:  */
        !           271: struct cstruct {
        !           272:        char    pchar;
        !           273: };
        !           274: struct {
        !           275:        int     pint;
        !           276:        int     pint2;
        !           277: };
        !           278: struct {
        !           279:        long    plong;
        !           280: };
        !           281: struct {
        !           282:        double  pdouble;
        !           283: };
        !           284: 
        !           285: #define        OCT     1
        !           286: #define        HEX     2
        !           287: 
        !           288: /*
        !           289:  * MAIN PROGRAM GLOBALS, MISCELLANY
        !           290:  */
        !           291: 
        !           292: /*
        !           293:  * Variables forming a data base referencing
        !           294:  * the command line arguments with the "z" option.
        !           295:  */
        !           296: char   **pflist;
        !           297: int    pflstc;
        !           298: int    pfcnt;
        !           299: 
        !           300: char   *filename;              /* current source file name */
        !           301: char   *lastname;              /* last file name printed */
        !           302: long   tvec;                   /* mod time of the source file */
        !           303: long   ptvec;                  /* time profiled */
        !           304: char   printed;                /* current file has been printed */
        !           305: char   hadsome;                /* had some output */
        !           306: 
        !           307: /*
        !           308:  * PROFILING AND FORMATTING DEFINITIONS
        !           309:  */
        !           310: 
        !           311: /*
        !           312:  * The basic counter information recording structure.
        !           313:  * This is global only because people outside
        !           314:  * the cluster in pmon.c need to know its size.
        !           315:  */
        !           316: struct pxcnt {
        !           317:        long    ntimes;         /* the count this structure is all about */
        !           318:        int     counter;        /* a unique counter number for us */
        !           319:        int     gos;            /* global goto count when we hatched */
        !           320:        int     printed;        /* are we considered to have been printed? */
        !           321: } pfcnts[DSPLYSZ];
        !           322: 
        !           323: /*
        !           324:  * The pieces we divide the output line indents into:
        !           325:  *     line#  PRFN  label:   STAT  999.---|  DECL   text
        !           326:  */
        !           327: #define        STAT    0
        !           328: #define        DECL    1
        !           329: #define        PRFN    2
        !           330: 
        !           331: /*
        !           332:  * Gocnt records the total number of goto's and
        !           333:  * cnts records the current counter for generating
        !           334:  * COUNT operators.
        !           335:  */
        !           336: int    gocnt;
        !           337: int    cnts;
        !           338: 
        !           339: #include <stdio.h>
        !           340: #include <sys/types.h>
        !           341: 
        !           342: typedef enum {FALSE, TRUE} bool;
        !           343: 
        !           344: #undef putchar

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