| 1 | /* Copyright (c) 1979 Regents of the University of California */ |
| 2 | # |
| 3 | /* |
| 4 | * pxp - Pascal execution profiler |
| 5 | * |
| 6 | * Bill Joy UCB |
| 7 | * Version 1.2 January 1979 |
| 8 | */ |
| 9 | |
| 10 | #include "0.h" |
| 11 | |
| 12 | /* |
| 13 | * Profile counter processing cluster |
| 14 | * |
| 15 | * This file contains all routines which do the hard work in profiling. |
| 16 | * |
| 17 | * The first group of routines (getit, getpmon, getcore, and pmread) |
| 18 | * deal with extracting data from the pmon.out and (with more difficulty) |
| 19 | * core files. |
| 20 | * |
| 21 | * The routines cnttab and prttab collect counters for |
| 22 | * and print the summary table respectively. |
| 23 | * |
| 24 | * The routines "*cnt*" deal with manipulation of counters, |
| 25 | * especially the "current" counter px. |
| 26 | */ |
| 27 | STATIC struct pxcnt px; |
| 28 | |
| 29 | /* |
| 30 | * Table to record info |
| 31 | * for procedure/function summary |
| 32 | */ |
| 33 | STATIC struct pftab { |
| 34 | long pfcnt; |
| 35 | short pfline; |
| 36 | char *pfname; |
| 37 | short pflev; |
| 38 | } *zpf; |
| 39 | |
| 40 | /* |
| 41 | * Global variables |
| 42 | */ |
| 43 | STATIC long *zbuf; /* Count buffer */ |
| 44 | STATIC short zcnt; /* Number of counts */ |
| 45 | STATIC short zpfcnt; /* Number of proc/funcs's */ |
| 46 | STATIC short gcountr; /* Unique name generator */ |
| 47 | STATIC short zfil; /* I/o unit for count data reads */ |
| 48 | STATIC short lastpf; /* Total # of procs and funcs for consistency chk */ |
| 49 | |
| 50 | getit(fp) |
| 51 | register char *fp; |
| 52 | { |
| 53 | |
| 54 | if (core) |
| 55 | getcore(fp); |
| 56 | else |
| 57 | getpmon(fp); |
| 58 | } |
| 59 | |
| 60 | /* |
| 61 | * Setup monitor data buffer from pmon.out |
| 62 | * style file whose name is fp. |
| 63 | */ |
| 64 | getpmon(fp) |
| 65 | char *fp; |
| 66 | { |
| 67 | register char *cp; |
| 68 | short garbage; |
| 69 | |
| 70 | zfil = open(fp, 0); |
| 71 | if (zfil < 0) { |
| 72 | perror(fp); |
| 73 | pexit(NOSTART); |
| 74 | } |
| 75 | if (pmread() < 0 || read(zfil, &garbage, 1) == 1) { |
| 76 | Perror(fp, "Bad format for pmon.out style file"); |
| 77 | exit(1); |
| 78 | } |
| 79 | close(zfil); |
| 80 | return; |
| 81 | } |
| 82 | |
| 83 | STATIC char nospcm[] "Not enough memory for count buffers\n"; |
| 84 | |
| 85 | pmnospac() |
| 86 | { |
| 87 | |
| 88 | write(2, nospcm, sizeof nospcm); |
| 89 | pexit(NOSTART); |
| 90 | } |
| 91 | |
| 92 | /* |
| 93 | * Structure of the first few |
| 94 | * items of a px core dump. |
| 95 | */ |
| 96 | STATIC struct info { |
| 97 | char *off; /* Self-reference for pure text */ |
| 98 | short type; /* 0 = non-pure text, 1 = pure text */ |
| 99 | char *bp; /* Core address of pxps struct */ |
| 100 | } inf; |
| 101 | |
| 102 | /* |
| 103 | * First few words of the px |
| 104 | * information structure. |
| 105 | */ |
| 106 | STATIC struct pxps { |
| 107 | char *buf; |
| 108 | short cnt; |
| 109 | } pxp; |
| 110 | |
| 111 | getcore(fp) |
| 112 | char *fp; |
| 113 | { |
| 114 | |
| 115 | write(2, "-c: option not supported\n", sizeof("-c: option not supported\n")); |
| 116 | pexit(ERRS); |
| 117 | /* |
| 118 | short pm; |
| 119 | |
| 120 | zfil = open(fp, 0); |
| 121 | if (zfil < 0) { |
| 122 | perror(fp); |
| 123 | pexit(NOSTART); |
| 124 | } |
| 125 | if (lseek(zfil, 02000, 0) < 0) |
| 126 | goto format; |
| 127 | if (read(zfil, &inf, sizeof inf) < 0) |
| 128 | goto format; |
| 129 | if (inf.type != 0 && inf.type != 1) |
| 130 | goto format; |
| 131 | if (inf.type) |
| 132 | inf.bp =- inf.off; |
| 133 | if (lseek(zfil, inf.bp + 02000, 0) < 0) |
| 134 | goto format; |
| 135 | if (read(zfil, &pxp, sizeof pxp) != sizeof pxp) |
| 136 | goto format; |
| 137 | if (pxp.buf == NIL) { |
| 138 | Perror(fp, "No profile data in file"); |
| 139 | exit(1); |
| 140 | } |
| 141 | if (inf.type) |
| 142 | pxp.buf =- inf.off; |
| 143 | if (lseek(zfil, pxp.buf + 02000, 0) < 0) |
| 144 | goto format; |
| 145 | if (pmread() < 0) |
| 146 | goto format; |
| 147 | close(zfil); |
| 148 | return; |
| 149 | format: |
| 150 | Perror(fp, "Not a Pascal system core file"); |
| 151 | exit(1); |
| 152 | */ |
| 153 | } |
| 154 | |
| 155 | pmread() |
| 156 | { |
| 157 | register i; |
| 158 | register char *cp; |
| 159 | struct { |
| 160 | short no; |
| 161 | short no2; |
| 162 | long tvec; |
| 163 | } zmagic; |
| 164 | |
| 165 | if (read(zfil, &zmagic, sizeof zmagic) != sizeof zmagic) |
| 166 | return (-1); |
| 167 | if (zmagic.no != 0426 || zmagic.no2) |
| 168 | return (-1); |
| 169 | ptvec = zmagic.tvec; |
| 170 | if (read(zfil, &zcnt, 2) != 2) |
| 171 | return (-1); |
| 172 | if (read(zfil, &zpfcnt, 2) != 2) |
| 173 | return (-1); |
| 174 | cp = zbuf = alloc(i = zcnt * sizeof *zbuf); |
| 175 | if (cp == -1) |
| 176 | pmnospac(); |
| 177 | cp = zpf = alloc(zpfcnt * sizeof *zpf); |
| 178 | if (cp == -1) |
| 179 | pmnospac(); |
| 180 | if (read(zfil, zbuf, i) != i) |
| 181 | return (-1); |
| 182 | zbuf =- 2; |
| 183 | return (0); |
| 184 | } |
| 185 | |
| 186 | cnttab(s, no) |
| 187 | char *s; |
| 188 | short no; |
| 189 | { |
| 190 | register struct pftab *pp; |
| 191 | |
| 192 | lastpf++; |
| 193 | if (table == 0) |
| 194 | return; |
| 195 | if (no == zpfcnt) |
| 196 | cPANIC(); |
| 197 | pp = &zpf[no]; |
| 198 | pp->pfname = s; |
| 199 | pp->pfline = line; |
| 200 | pp->pfcnt = nowcnt(); |
| 201 | pp->pflev = cbn; |
| 202 | } |
| 203 | |
| 204 | prttab() |
| 205 | { |
| 206 | register i, j; |
| 207 | register struct pftab *zpfp; |
| 208 | |
| 209 | if (profile == 0 && table == 0) |
| 210 | return; |
| 211 | if (cnts != zcnt || lastpf != zpfcnt) |
| 212 | cPANIC(); |
| 213 | if (table == 0) |
| 214 | return; |
| 215 | if (profile) |
| 216 | printf("\f\n"); |
| 217 | header(); |
| 218 | printf("\n\tLine\t Count\n\n"); |
| 219 | zpfp = zpf; |
| 220 | for (i = 0; i < zpfcnt; i++) { |
| 221 | printf("\t%4d\t%8ld\t", zpfp->pfline, zpfp->pfcnt); |
| 222 | if (!justify) |
| 223 | for (j = zpfp->pflev * unit; j > 1; j--) |
| 224 | putchar(' '); |
| 225 | printf("%s\n", zpfp->pfname); |
| 226 | zpfp++; |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | nowcntr() |
| 231 | { |
| 232 | |
| 233 | return (px.counter); |
| 234 | } |
| 235 | |
| 236 | long nowcnt() |
| 237 | { |
| 238 | |
| 239 | return (px.ntimes); |
| 240 | } |
| 241 | |
| 242 | long cntof(pxc) |
| 243 | struct pxcnt *pxc; |
| 244 | { |
| 245 | |
| 246 | if (profile == 0 && table == 0) |
| 247 | return; |
| 248 | return (pxc->ntimes); |
| 249 | } |
| 250 | |
| 251 | setcnt(l) |
| 252 | long l; |
| 253 | { |
| 254 | |
| 255 | if (profile == 0 && table == 0) |
| 256 | return; |
| 257 | px.counter = --gcountr; |
| 258 | px.ntimes = l; |
| 259 | px.gos = gocnt; |
| 260 | px.printed = 0; |
| 261 | } |
| 262 | |
| 263 | savecnt(pxc) |
| 264 | register struct pxcnt *pxc; |
| 265 | { |
| 266 | |
| 267 | if (profile == 0 && table == 0) |
| 268 | return; |
| 269 | pxc->ntimes = px.ntimes; |
| 270 | pxc->counter = px.counter; |
| 271 | pxc->gos = px.gos; |
| 272 | pxc->printed = 1; |
| 273 | } |
| 274 | |
| 275 | rescnt(pxc) |
| 276 | register struct pxcnt *pxc; |
| 277 | { |
| 278 | |
| 279 | if (profile == 0 && table == 0) |
| 280 | return; |
| 281 | px.ntimes = pxc->ntimes; |
| 282 | px.counter = pxc->counter; |
| 283 | px.gos = gocnt; |
| 284 | px.printed = pxc->printed; |
| 285 | return (gocnt != pxc->gos); |
| 286 | } |
| 287 | |
| 288 | getcnt() |
| 289 | { |
| 290 | |
| 291 | if (profile == 0 && table == 0) |
| 292 | return; |
| 293 | if (cnts == zcnt) |
| 294 | cPANIC(); |
| 295 | px.counter = cnts; |
| 296 | px.ntimes = zbuf[cnts]; |
| 297 | px.gos = gocnt; |
| 298 | px.printed = 0; |
| 299 | ++cnts; |
| 300 | } |
| 301 | |
| 302 | unprint() |
| 303 | { |
| 304 | |
| 305 | px.printed = 0; |
| 306 | } |
| 307 | |
| 308 | /* |
| 309 | * Control printing of '|' |
| 310 | * when profiling. |
| 311 | */ |
| 312 | STATIC char nobar; |
| 313 | |
| 314 | baroff() |
| 315 | { |
| 316 | |
| 317 | nobar = 1; |
| 318 | } |
| 319 | |
| 320 | baron() |
| 321 | { |
| 322 | |
| 323 | nobar = 0; |
| 324 | } |
| 325 | |
| 326 | /* |
| 327 | * Do we want cnt and/or '|' on this line ? |
| 328 | * 1 = count and '|' |
| 329 | * 0 = only '|' |
| 330 | * -1 = spaces only |
| 331 | */ |
| 332 | shudpcnt() |
| 333 | { |
| 334 | |
| 335 | register i; |
| 336 | |
| 337 | if (nobar) |
| 338 | return (-1); |
| 339 | i = px.printed; |
| 340 | px.printed = 1; |
| 341 | return (i == 0); |
| 342 | } |
| 343 | |
| 344 | STATIC char mism[] "Program and counter data do not correspond\n"; |
| 345 | |
| 346 | cPANIC() |
| 347 | { |
| 348 | |
| 349 | printf("cnts %d zcnt %d, lastpf %d zpfcnt %d\n", |
| 350 | cnts, zcnt, lastpf, zpfcnt); |
| 351 | flush(); |
| 352 | write(2, mism, sizeof mism); |
| 353 | pexit(ERRS); |
| 354 | } |