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Annotation of 42BSD/ucb/pascal/pxp/0.h, revision 1.1

1.1     ! root        1: /* static      char *sccsid = "@(#)0.h 1.5 (Berkeley) 5/31/83";*/
        !             2: /* Copyright (c) 1979 Regents of the University of California */
        !             3: /* #define DEBUG */
        !             4: #define        CHAR
        !             5: #define        STATIC
        !             6: /*
        !             7:  * pxp - Pascal execution profiler
        !             8:  *
        !             9:  * Bill Joy
        !            10:  * University of California, Berkeley (UCB)
        !            11:  * Version 1.1 February 1978
        !            12:  */
        !            13: 
        !            14: /*
        !            15:  * Option flags
        !            16:  *
        !            17:  * The following options are recognized on the command line by pxp.
        !            18:  * Only the u, w, and z options here have effect in comments in the
        !            19:  * program; the others are command line only, and unrelated
        !            20:  * to the options with the same designations in comments.
        !            21:  *
        !            22:  *     a       Print all routines in a profile; normally, routines
        !            23:  *             which have never been executed have their bodies suppressed.
        !            24:  *
        !            25:  *     c       Extract profile data from the file core, or the file
        !            26:  *             named after the last argument rather than the file 'pmon.out'.
        !            27:  *             Must be used with z to have an effect.
        !            28:  *
        !            29:  *     d       Suppress declarations
        !            30:  *
        !            31:  *     f       Fully parenthesize expressions.
        !            32:  *
        !            33:  *     j       Left justify all procedures and functions rather than
        !            34:  *             indenting them.
        !            35:  *
        !            36:  *     n       Eject a new page in the listing as each 'include' file
        !            37:  *             is incorporated into the profile.
        !            38:  *
        !            39:  *     o       Put output prettyprint in first argument file
        !            40:  *
        !            41:  *     p       Pretty print a main program without processing
        !            42:  *             the include statements.
        !            43:  *
        !            44:  *     t       Print a table summarizing procedure and function call counts.
        !            45:  *
        !            46:  *     u       Card image mode; only the first 72 chars on a line count.
        !            47:  *
        !            48:  *     w       Suppress certain warning diagnostics.
        !            49:  *
        !            50:  *     z       Generate an execution profile of the program.
        !            51:  *             May also be followed by a list of procedure and function
        !            52:  *             names mixed, if desired, with include file names.
        !            53:  *             Only these procedures and functions, and the contents
        !            54:  *             of the specified include files will then be profiled.
        !            55:  *
        !            56:  *  [23456789] Use the specified number of spaces for the basic
        !            57:  *             indenting unit in the program.
        !            58:  *
        !            59:  *     _       Underline keywords in the output.
        !            60:  *
        !            61:  *     O       remove `others'.  if an `others' label is found in a
        !            62:  *             case statement the case statement (minus the others case)
        !            63:  *             is printed as a guarded case statement, and the others case
        !            64:  *             is the else branch of the guard.  this transformation
        !            65:  *             causes the case selector to be evaluated twice, a lose
        !            66:  *             if the selector has side-effects.  this option is only
        !            67:  *             available if pxp is compiled with RMOTHERS defined.
        !            68:  */
        !            69: 
        !            70: char   all, core, nodecl, full, justify, pmain, stripcomm, table, underline;
        !            71: char   profile, onefile;
        !            72: #ifdef RMOTHERS
        !            73: char   rmothers;
        !            74: #endif RMOTHERS
        !            75: char   *firstname, *stdoutn;
        !            76: #ifdef DEBUG
        !            77: char   fulltrace, errtrace, testtrace, yyunique, typetest;
        !            78: #endif
        !            79: int    unit;
        !            80: 
        !            81: /*
        !            82:  * The flag nojunk means that header lines
        !            83:  * of procedures and functions are to be suppressed
        !            84:  * when the z option is off.
        !            85:  * It is the default when command line z option
        !            86:  * control is specified.
        !            87:  *
        !            88:  * The flag noinclude indicates that include statements are not
        !            89:  * to be processed since we are pretty-printing the contents
        !            90:  * of a single file.
        !            91:  *
        !            92:  * The flag bracket indicates that the source code should be
        !            93:  * bracketed with lines of the form
        !            94:  *     program x(output);
        !            95:  * and
        !            96:  *     begin end.
        !            97:  * so that an include will pretty print without syntax errors.
        !            98:  */
        !            99: char   nojunk, noinclude, bracket;
        !           100: 
        !           101: /*
        !           102:  * IMPORTANT NOTE
        !           103:  *
        !           104:  * Many of the following globals are shared by pi and pxp.
        !           105:  * For more discussion of these see the available documentation
        !           106:  * on the structure of pi.
        !           107:  */
        !           108: 
        !           109: /*
        !           110:  * Each option has a stack of 17 option values, with opts giving
        !           111:  * the current, top value, and optstk the value beneath it.
        !           112:  * One refers to option `l' as, e.g., opt('l') in the text for clarity.
        !           113:  */
        !           114: char   opts[26];
        !           115: int    optstk[26];
        !           116: 
        !           117: #define opt(c) opts[c-'a']
        !           118: 
        !           119: /*
        !           120:  * NOTES ON THE DYNAMIC NATURE OF THE DATA STRUCTURES
        !           121:  *
        !           122:  * Pxp uses expandable tables for its string table
        !           123:  * hash table, and parse tree space.  The following
        !           124:  * definitions specify the size of the increments
        !           125:  * for these items in fundamental units so that
        !           126:  * each uses approximately 1024 bytes.
        !           127:  */
        !           128: 
        !           129: #define        STRINC  1024            /* string space increment */
        !           130: #define        TRINC   512             /* tree space increment */
        !           131: #define        HASHINC 509             /* hash table size in words, each increment */
        !           132: 
        !           133: /*
        !           134:  * The initial sizes of the structures.
        !           135:  * These should be large enough to profile
        !           136:  * an "average" sized program so as to minimize
        !           137:  * storage requests.
        !           138:  * On a small system or and 11/34 or 11/40
        !           139:  * these numbers can be trimmed to make the
        !           140:  * profiler smaller.
        !           141:  */
        !           142: #define        ITREE   2000
        !           143: #define        IHASH   509
        !           144: 
        !           145: /*
        !           146:  * The following limits on hash and tree tables currently
        !           147:  * allow approximately 1200 symbols and 20k words of tree
        !           148:  * space.  The fundamental limit of 64k total data space
        !           149:  * should be exceeded well before these are full.
        !           150:  */
        !           151: /*
        !           152:  * TABLE_MULTIPLIER is for uniformly increasing the sizes of the tables
        !           153:  */
        !           154: #ifdef ADDR32
        !           155: #define TABLE_MULTIPLIER       8
        !           156: #endif ADDR32
        !           157: #ifdef ADDR16
        !           158: #define TABLE_MULTIPLIER       1
        !           159: #endif ADDR16
        !           160: #define        MAXHASH (4 * TABLE_MULTIPLIER)
        !           161: #define        MAXTREE (30 * TABLE_MULTIPLIER)
        !           162: /*
        !           163:  * MAXDEPTH is the depth of the parse stack.
        !           164:  * STACK_MULTIPLIER is for increasing its size.
        !           165:  */
        !           166: #ifdef ADDR32
        !           167: #define        STACK_MULTIPLIER        8
        !           168: #endif ADDR32
        !           169: #ifdef ADDR16
        !           170: #define        STACK_MULTIPLIER        1
        !           171: #endif ADDR16
        !           172: #define        MAXDEPTH ( 150 * STACK_MULTIPLIER )
        !           173: 
        !           174: /*
        !           175:  * ERROR RELATED DEFINITIONS
        !           176:  */
        !           177: 
        !           178: /*
        !           179:  * Exit statuses to pexit
        !           180:  *
        !           181:  * AOK
        !           182:  * ERRS                Compilation errors inhibit obj productin
        !           183:  * NOSTART     Errors before we ever got started
        !           184:  * DIED                We ran out of memory or some such
        !           185:  */
        !           186: #define        AOK     0
        !           187: #define        ERRS    1
        !           188: #define        NOSTART 2
        !           189: #define        DIED    3
        !           190: 
        !           191: char   Recovery;
        !           192: /*
        !           193:  * The flag eflg is set whenever we have a hard error.
        !           194:  * The character in errpfx will precede the next error message.
        !           195:  */
        !           196: int    eflg;
        !           197: char   errpfx;
        !           198: 
        !           199: #define        setpfx(x)       errpfx = x
        !           200: 
        !           201: #define        standard()      setpfx('s')
        !           202: #define        warning()       setpfx('w')
        !           203: #define        recovered()     setpfx('e')
        !           204: #define        quit()          setpfx('Q')
        !           205: #define        continuation()  setpfx(' ')
        !           206: 
        !           207: /*
        !           208:  * SEMANTIC DEFINITIONS
        !           209:  */
        !           210: 
        !           211: #define        NIL     0
        !           212: 
        !           213: /*
        !           214:  * NOCON and SAWCON are flags in the tree telling whether
        !           215:  * a constant set is part of an expression.
        !           216:  */
        !           217: #define        NOCON   0
        !           218: #define        SAWCON  1
        !           219: 
        !           220: /*
        !           221:  * The variable cbn gives the current block number.
        !           222:  * The variable lastbn gives the block number before
        !           223:  * it last changed and is used to know that we were
        !           224:  * in a nested procedure so that we can print
        !           225:  *     begin { solve }
        !           226:  * when solve has nested procedures or functions in it.
        !           227:  */
        !           228: int    cbn, lastbn;
        !           229: 
        !           230: /*
        !           231:  * The variable line is the current semantic
        !           232:  * line and is set in stat.c from the numbers
        !           233:  * embedded in statement type tree nodes.
        !           234:  */
        !           235: int    line;
        !           236: 
        !           237: /*
        !           238:  * The size of the display
        !           239:  * which defines the maximum nesting
        !           240:  * of procedures and functions allowed.
        !           241:  */
        !           242: #define        DSPLYSZ 20
        !           243: 
        !           244: /*
        !           245:  * Routines which need types
        !           246:  * other than "integer" to be
        !           247:  * assumed by the compiler.
        !           248:  */
        !           249: int    *tree();
        !           250: int    *hash();
        !           251: char   *alloc();
        !           252: long   cntof();
        !           253: long   nowcnt();
        !           254: 
        !           255: /*
        !           256:  * Funny structures to use
        !           257:  * pointers in wild and wooly ways
        !           258:  */
        !           259: struct {
        !           260:        char    pchar;
        !           261: };
        !           262: struct {
        !           263:        int     pint;
        !           264:        int     pint2;
        !           265: };
        !           266: struct {
        !           267:        long    plong;
        !           268: };
        !           269: struct {
        !           270:        double  pdouble;
        !           271: };
        !           272: 
        !           273: #define        OCT     1
        !           274: #define        HEX     2
        !           275: 
        !           276: /*
        !           277:  * MAIN PROGRAM GLOBALS, MISCELLANY
        !           278:  */
        !           279: 
        !           280: /*
        !           281:  * Variables forming a data base referencing
        !           282:  * the command line arguments with the "z" option.
        !           283:  */
        !           284: char   **pflist;
        !           285: int    pflstc;
        !           286: int    pfcnt;
        !           287: 
        !           288: char   *filename;              /* current source file name */
        !           289: char   *lastname;              /* last file name printed */
        !           290: long   tvec;                   /* mod time of the source file */
        !           291: long   ptvec;                  /* time profiled */
        !           292: char   printed;                /* current file has been printed */
        !           293: char   hadsome;                /* had some output */
        !           294: 
        !           295: /*
        !           296:  * PROFILING AND FORMATTING DEFINITIONS
        !           297:  */
        !           298: 
        !           299: /*
        !           300:  * The basic counter information recording structure.
        !           301:  * This is global only because people outside
        !           302:  * the cluster in pmon.c need to know its size.
        !           303:  */
        !           304: struct pxcnt {
        !           305:        long    ntimes;         /* the count this structure is all about */
        !           306:        int     counter;        /* a unique counter number for us */
        !           307:        int     gos;            /* global goto count when we hatched */
        !           308:        int     printed;        /* are we considered to have been printed? */
        !           309: } pfcnts[DSPLYSZ];
        !           310: 
        !           311: /*
        !           312:  * The pieces we divide the output line indents into:
        !           313:  *     line#  PRFN  label:   STAT  999.---|  DECL   text
        !           314:  */
        !           315: #define        STAT    0
        !           316: #define        DECL    1
        !           317: #define        PRFN    2
        !           318: 
        !           319: /*
        !           320:  * Gocnt records the total number of goto's and
        !           321:  * cnts records the current counter for generating
        !           322:  * COUNT operators.
        !           323:  */
        !           324: int    gocnt;
        !           325: int    cnts;
        !           326: 
        !           327: #include <stdio.h>
        !           328: 
        !           329: typedef enum {FALSE, TRUE} bool;
        !           330: 
        !           331: #undef putchar

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