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

   1: #
   2: /*
   3:  * pxp - Pascal execution profiler
   4:  *
   5:  * Steven Schultz GTE
   6:  * Version 1.2.1 October 1996
   7:  *
   8:  * Bill Joy UCB
   9:  * Version 1.2 January 1979
  10:  */
  11: 
  12: #include "0.h"
  13: 
  14: /*
  15:  * This program is described in detail in the "PXP 1.0 Implementation Notes"
  16:  *
  17:  * The structure of pxp is very similar to that of the compiler pc.
  18:  * The major new pieces here are a set of profile data maintenance
  19:  * routines in the file pmon.c and a set of pretty printing utility
  20:  * routines in the file pp.c.
  21:  * The semantic routines of pc have been rewritten to do a simple
  22:  * reformatting tree walk, the parsing and scanning remains
  23:  * the same.
  24:  *
  25:  * This version does not reformat comments, rather discards them.
  26:  * It also does not place more than one statement per line and
  27:  * is not very intelligent about folding long lines, with only
  28:  * an ad hoc way of folding case label list and enumerated type
  29:  * declarations being implemented.
  30:  */
  31: 
  32: char    usagestr[] =
  33:     "pxp [ -acdefjntuw_ ] [ -23456789 ] [ -z [ name ... ] ] name.p";
  34: 
  35: char    *how_file   = "/usr/share/pascal/how_pxp";
  36: int how_pathlen = 18;   /* "/usr/share/pascal/" */
  37: 
  38: char    *stdoutn    = "Standard output";
  39: 
  40: int unit    = 4;
  41: 
  42: extern  int ibuf[259];
  43: extern  char errout;
  44: 
  45: /*
  46:  * Main program for pxp.
  47:  * Process options, then call yymain
  48:  * to do all the real work.
  49:  */
  50: main(argc, argv)
  51:     int argc;
  52:     char *argv[];
  53: {
  54:     register char *cp;
  55:     register c;
  56: 
  57:     if (argv[0][0] == 'a')
  58:         how_file += how_pathlen;
  59:     argc--, argv++;
  60:     if (argc == 0) {
  61:         execl("/bin/cat", "cat", how_file, 0);
  62:         goto usage;
  63:     }
  64:     while (argc > 0) {
  65:         cp = argv[0];
  66:         if (*cp++ != '-')
  67:             break;
  68:         while (c = *cp++) switch (c) {
  69: #ifdef DEBUG
  70:             case 'T':
  71:                 typetest++;
  72:                 continue;
  73:             case 'A':
  74:                 testtrace++;
  75:             case 'F':
  76:                 fulltrace++;
  77:             case 'E':
  78:                 errtrace++;
  79:                 continue;
  80:             case 'C':
  81:                 yycosts();
  82:                 pexit(NOSTART);
  83:             case 'U':
  84:                 yyunique++;
  85:                 continue;
  86: #endif
  87:             case 'a':
  88:                 all++;
  89:                 continue;
  90:             case 'c':
  91:                 core++;
  92:                 continue;
  93:             case 'd':
  94:                 nodecl++;
  95:                 continue;
  96:             case 'e':
  97:                 noinclude = -1;
  98:                 continue;
  99:             case 'f':
 100:                 full++;
 101:                 continue;
 102:             case 'j':
 103:                 justify++;
 104:                 continue;
 105:             case 'l':
 106:             case 'n':
 107:                 togopt(c);
 108:                 continue;
 109:             case 'o':
 110:                 onefile++;
 111:                 continue;
 112:             case 's':
 113:                 stripcomm++;
 114:                 continue;
 115:             case 't':
 116:                 table++;
 117:                 continue;
 118:             case 'u':
 119:             case 'w':
 120:                 togopt(c);
 121:                 continue;
 122:             case 'z':
 123:                 profile++;
 124:                 pflist = argv + 1;
 125:                 pflstc = 0;
 126:                 while (argc > 1) {
 127:                     if (dotted(argv[1], 'p'))
 128:                         break;
 129:                     pflstc++, argc--, argv++;
 130:                 }
 131:                 if (pflstc == 0)
 132:                     togopt(c);
 133:                 else
 134:                     nojunk++;
 135:                 continue;
 136:             case '_':
 137:                 underline++;
 138:                 continue;
 139:             default:
 140:                 if (c >= '2' && c <= '9') {
 141:                     unit = c - '0';
 142:                     continue;
 143:                 }
 144: usage:
 145:                 Perror("Usage", usagestr);
 146:                 exit(1);
 147:         }
 148:         argc--, argv++;
 149:     }
 150:     if (core && !profile && !table)
 151:         profile++;
 152:     if (argc == 0 || argc > 2)
 153:         goto usage;
 154:     if (profile || table) {
 155:         noinclude = 0;
 156:         if (argc == 2) {
 157:             argc--;
 158:             getit(argv[1]);
 159:         } else
 160:             getit(core ? "core" : "pmon.out");
 161:     } else
 162:         noinclude++;
 163:     if (argc != 1)
 164:         goto usage;
 165:     firstname = filename = argv[0];
 166:     if (dotted(filename, 'i')) {
 167:         if (profile || table)
 168:             goto usage;
 169:         noinclude = 1;
 170:         bracket++;
 171:     } else if (!dotted(filename, 'p')) {
 172:         Perror(filename, "Name must end in '.p'");
 173:         exit(1);
 174:     }
 175:     if (fopen(filename, ibuf) < 0)
 176:         perror(filename), pexit(NOSTART);
 177:     if (onefile) {
 178:         int onintr();
 179: 
 180:         cp = (stdoutn = "/tmp/pxp00000") + 13;
 181:         signal(2, onintr);
 182:         for (c = getpid(); c; c /= 10)
 183:             *--cp |= (c % 10);
 184:         if (fcreat(stdoutn, fout) < 0)
 185: bad:
 186:             perror(stdoutn), exit(1);
 187:         close(fout[0]);
 188:         if (open(stdoutn, 2) != fout[0])
 189:             goto bad;
 190:     } else
 191:         fout[0] = dup(1);
 192:     if (profile || opt('l')) {
 193:         opt('n')++;
 194:         yysetfile(filename);
 195:         opt('n')--;
 196:     } else
 197:         lastname = filename;
 198:     errout = dup(2);
 199:     yymain();
 200:     /* No return */
 201: }
 202: 
 203: /*
 204:  * Put a header on a top of a page
 205:  */
 206: header()
 207: {
 208:     extern char version[];
 209:     static char reenter;
 210:     extern int outcol;
 211: 
 212:     gettime();
 213:     if (reenter) {
 214:         if (outcol)
 215:             putchar('\n');
 216:         putchar('\f');
 217:     }
 218:     reenter++;
 219:     if (profile || table) {
 220:         printf("Berkeley Pascal PXP -- Version 1.1 (%s)\n\n%s  %s\n\n", version, myctime(&tvec), filename);
 221:         printf("Profiled %s\n\n", myctime(&ptvec));
 222:     }
 223: }
 224: 
 225: char    ugh[]   = "Fatal error in pxp\n";
 226: /*
 227:  * Exit from the Pascal system.
 228:  * We throw in an ungraceful termination
 229:  * message if c > 1 indicating a severe
 230:  * error such as running out of memory
 231:  * or an internal inconsistency.
 232:  */
 233: pexit(c)
 234:     int c;
 235: {
 236:     register char *cp;
 237:     extern int outcol;
 238: 
 239:     if (stdoutn[0] == '/')
 240:         unlink(stdoutn);
 241:     if (outcol)
 242:         putchar('\n');
 243:     flush();
 244:     if (c == DIED)
 245:         write(2, ugh, sizeof ugh);
 246:     exit(c);
 247: }
 248: 
 249: onintr()
 250: {
 251: 
 252:     pexit(DIED);
 253: }
 254: 
 255: puthedr()
 256: {
 257: 
 258:     yysetfile(filename);
 259: }

Defined functions

Defined variables