2.11BSD#431 - /usr/src/ucb/PORT/pascal/pxp/main.c

   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: 
   7: #ifndef lint
   8: char copyright[] =
   9: "@(#) Copyright (c) 1980 Regents of the University of California.\n\
  10:  All rights reserved.\n";
  11: #endif not lint
  12: 
  13: #ifndef lint
  14: static char sccsid[] = "@(#)main.c	5.1 (Berkeley) 6/5/85";
  15: #endif not lint
  16: 
  17: /*
  18:  * pxp - Pascal execution profiler
  19:  *
  20:  * Bill Joy UCB
  21:  * Version 1.2 January 1979
  22:  */
  23: 
  24: #include "0.h"
  25: 
  26: /*
  27:  * This program is described in detail in the "PXP 1.0 Implementation Notes"
  28:  *
  29:  * The structure of pxp is very similar to that of the translator pi.
  30:  * The major new pieces here are a set of profile data maintenance
  31:  * routines in the file pmon.c and a set of pretty printing utility
  32:  * routines in the file pp.c.
  33:  * The semantic routines of pi have been rewritten to do a simple
  34:  * reformatting tree walk, the parsing and scanning remains
  35:  * the same.
  36:  *
  37:  * This version does not place more than one statement per line and
  38:  * is not very intelligent about folding long lines, with only
  39:  * an ad hoc way of folding case label list and enumerated type
  40:  * declarations being implemented.
  41:  */
  42: 
  43: char    usagestr[] =
  44:     "pxp [ -acdefjntuw_ ] [ -23456789 ] [ -z [ name ... ] ] name.p";
  45: char    *howfile =  "/usr/lib/how_pxp";
  46: char    *stdoutn =  "Standard output";
  47: 
  48: int unit =  4;
  49: 
  50: FILE    *ibuf;
  51: extern  char errout;
  52: 
  53: /*
  54:  * Main program for pxp.
  55:  * Process options, then call yymain
  56:  * to do all the real work.
  57:  */
  58: FILE *ibp;
  59: main(argc, argv)
  60:     int argc;
  61:     char *argv[];
  62: {
  63:     register char *cp;
  64:     register c;
  65: 
  66:     if (argv[0][0] == 'a')
  67:         howfile =+ 9;
  68:     argc--, argv++;
  69:     if (argc == 0) {
  70:         execl("/bin/cat", "cat", howfile, 0);
  71:         goto usage;
  72:     }
  73:     while (argc > 0) {
  74:         cp = argv[0];
  75:         if (*cp++ != '-')
  76:             break;
  77:         while (c = *cp++) switch (c) {
  78: #ifdef DEBUG
  79:             case 'T':
  80:                 typetest++;
  81:                 continue;
  82:             case 'A':
  83:                 testtrace++;
  84:             case 'F':
  85:                 fulltrace++;
  86:             case 'E':
  87:                 errtrace++;
  88:                 continue;
  89:             case 'C':
  90:                 yycosts();
  91:                 pexit(NOSTART);
  92:             case 'U':
  93:                 yyunique++;
  94:                 continue;
  95: #endif
  96:             case 'a':
  97:                 all++;
  98:                 continue;
  99:             case 'c':
 100:                 core++;
 101:                 continue;
 102:             case 'd':
 103:                 nodecl++;
 104:                 continue;
 105:             case 'e':
 106:                 noinclude = -1;
 107:                 continue;
 108:             case 'f':
 109:                 full++;
 110:                 continue;
 111:             case 'j':
 112:                 justify++;
 113:                 continue;
 114:             case 'l':
 115:             case 'n':
 116:                 togopt(c);
 117:                 continue;
 118:             case 'o':
 119:                 onefile++;
 120:                 continue;
 121:             case 's':
 122:                 stripcomm++;
 123:                 continue;
 124:             case 't':
 125:                 table++;
 126:                 continue;
 127:             case 'u':
 128:             case 'w':
 129:                 togopt(c);
 130:                 continue;
 131:             case 'z':
 132:                 profile++;
 133:                 pflist = argv + 1;
 134:                 pflstc = 0;
 135:                 while (argc > 1) {
 136:                     if (dotted(argv[1], 'p'))
 137:                         break;
 138:                     pflstc++, argc--, argv++;
 139:                 }
 140:                 if (pflstc == 0)
 141:                     togopt(c);
 142:                 else
 143:                     nojunk++;
 144:                 continue;
 145:             case '_':
 146:                 underline++;
 147:                 continue;
 148: #			ifdef RMOTHERS
 149:             case 'O':
 150:                 rmothers++;
 151:                 continue;
 152: #			endif RMOTHERS
 153:             default:
 154:                 if (c >= '2' && c <= '9') {
 155:                     unit = c - '0';
 156:                     continue;
 157:                 }
 158: usage:
 159:                 Perror("Usage", usagestr);
 160:                 exit(1);
 161:         }
 162:         argc--, argv++;
 163:     }
 164:     if (core && !profile && !table)
 165:         profile++;
 166:     if (argc == 0 || argc > 2)
 167:         goto usage;
 168:     if (profile || table) {
 169:         noinclude = 0;
 170:         if (argc == 2) {
 171:             argc--;
 172:             getit(argv[1]);
 173:         } else
 174:             getit(core ? "core" : "pmon.out");
 175:     } else
 176:         noinclude++;
 177:     if (argc != 1)
 178:         goto usage;
 179:     firstname = filename = argv[0];
 180:     if (dotted(filename, 'i')) {
 181:         if (profile || table)
 182:             goto usage;
 183:         noinclude = 1;
 184:         bracket++;
 185:     } else if (!dotted(filename, 'p')) {
 186:         Perror(filename, "Name must end in '.p'");
 187:         exit(1);
 188:     }
 189:     if ((ibuf = fopen(filename, "r")) == NULL)
 190:         perror(filename), pexit(NOSTART);
 191:     ibp = ibuf;
 192:     if (onefile) {
 193:         int onintr();
 194: 
 195:         cp = (stdoutn = "/tmp/pxp00000") + 13;
 196:         signal(2, onintr);
 197:         for (c = getpid(); c; c =/ 10)
 198:             *--cp =| (c % 10);
 199:         if (freopen(stdoutn, "w", stdout) == NULL)
 200: bad:
 201:             perror(stdoutn), exit(1);
 202:     } else {
 203:         extern char _sobuf[BUFSIZ];
 204:         setbuf(stdout, _sobuf);
 205:     }
 206:     if (profile || opt('l')) {
 207:         opt('n')++;
 208:         yysetfile(filename);
 209:         opt('n')--;
 210:     } else
 211:         lastname = filename;
 212:     errout = 2;
 213:     yymain();
 214:     /* No return */
 215: }
 216: 
 217: /*
 218:  * Put a header on a top of a page
 219:  */
 220: header()
 221: {
 222:     extern char version[];
 223:     static char reenter;
 224:     extern int outcol;
 225: 
 226:     gettime(filename);
 227:     if (reenter) {
 228:         if (outcol)
 229:             putchar('\n');
 230:         putchar('\f');
 231:     }
 232:     reenter++;
 233:     if (profile || table) {
 234:         printf("Berkeley Pascal PXP -- Version %s\n\n%s  %s\n\n",
 235:             version, myctime(&tvec), filename);
 236:         printf("Profiled %s\n\n", myctime(&ptvec));
 237:     }
 238: }
 239: 
 240: char    ugh[] = "Fatal error in pxp\n";
 241: /*
 242:  * Exit from the Pascal system.
 243:  * We throw in an ungraceful termination
 244:  * message if c > 1 indicating a severe
 245:  * error such as running out of memory
 246:  * or an internal inconsistency.
 247:  */
 248: pexit(c)
 249:     int c;
 250: {
 251:     register char *cp;
 252:     extern int outcol;
 253: 
 254:     if (stdoutn[0] == '/')
 255:         unlink(stdoutn);
 256:     if (outcol)
 257:         putchar('\n');
 258:     flush();
 259:     if (c == DIED)
 260:         write(2, ugh, sizeof ugh);
 261:     exit(c);
 262: }
 263: 
 264: onintr()
 265: {
 266: 
 267:     pexit(DIED);
 268: }
 269: 
 270: puthedr()
 271: {
 272: 
 273:     yysetfile(filename);
 274: }

Defined functions

Defined variables