Mercurial > hg > CbC > CbC_gcc
annotate gcc/gcov-io.c @ 158:494b0b89df80 default tip
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| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 25 May 2020 18:13:55 +0900 |
| parents | 1830386684a0 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* File format for coverage information |
| 145 | 2 Copyright (C) 1996-2020 Free Software Foundation, Inc. |
| 0 | 3 Contributed by Bob Manson <manson@cygnus.com>. |
| 4 Completely remangled by Nathan Sidwell <nathan@codesourcery.com>. | |
| 5 | |
| 6 This file is part of GCC. | |
| 7 | |
| 8 GCC is free software; you can redistribute it and/or modify it under | |
| 9 the terms of the GNU General Public License as published by the Free | |
| 10 Software Foundation; either version 3, or (at your option) any later | |
| 11 version. | |
| 12 | |
| 13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 14 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 111 | 18 Under Section 7 of GPL version 3, you are granted additional |
| 19 permissions described in the GCC Runtime Library Exception, version | |
| 20 3.1, as published by the Free Software Foundation. | |
| 21 | |
| 22 You should have received a copy of the GNU General Public License and | |
| 23 a copy of the GCC Runtime Library Exception along with this program; | |
| 24 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
| 0 | 25 <http://www.gnu.org/licenses/>. */ |
| 26 | |
| 27 /* Routines declared in gcov-io.h. This file should be #included by | |
| 28 another source file, after having #included gcov-io.h. */ | |
| 29 | |
| 30 #if !IN_GCOV | |
| 31 static void gcov_write_block (unsigned); | |
| 32 static gcov_unsigned_t *gcov_write_words (unsigned); | |
| 33 #endif | |
| 34 static const gcov_unsigned_t *gcov_read_words (unsigned); | |
| 35 #if !IN_LIBGCOV | |
| 36 static void gcov_allocate (unsigned); | |
| 37 #endif | |
| 38 | |
| 111 | 39 /* Optimum number of gcov_unsigned_t's read from or written to disk. */ |
| 40 #define GCOV_BLOCK_SIZE (1 << 10) | |
| 41 | |
| 42 struct gcov_var | |
| 43 { | |
| 44 FILE *file; | |
| 45 gcov_position_t start; /* Position of first byte of block */ | |
| 46 unsigned offset; /* Read/write position within the block. */ | |
| 47 unsigned length; /* Read limit in the block. */ | |
| 48 unsigned overread; /* Number of words overread. */ | |
| 49 int error; /* < 0 overflow, > 0 disk error. */ | |
| 50 int mode; /* < 0 writing, > 0 reading */ | |
| 51 #if IN_LIBGCOV | |
| 52 /* Holds one block plus 4 bytes, thus all coverage reads & writes | |
| 53 fit within this buffer and we always can transfer GCOV_BLOCK_SIZE | |
| 54 to and from the disk. libgcov never backtracks and only writes 4 | |
| 55 or 8 byte objects. */ | |
| 56 gcov_unsigned_t buffer[GCOV_BLOCK_SIZE + 1]; | |
| 57 #else | |
| 58 int endian; /* Swap endianness. */ | |
| 59 /* Holds a variable length block, as the compiler can write | |
| 60 strings and needs to backtrack. */ | |
| 61 size_t alloc; | |
| 62 gcov_unsigned_t *buffer; | |
| 63 #endif | |
| 64 } gcov_var; | |
| 65 | |
| 66 /* Save the current position in the gcov file. */ | |
| 67 /* We need to expose this function when compiling for gcov-tool. */ | |
| 68 #ifndef IN_GCOV_TOOL | |
| 69 static inline | |
| 70 #endif | |
| 71 gcov_position_t | |
| 72 gcov_position (void) | |
| 73 { | |
| 74 gcov_nonruntime_assert (gcov_var.mode > 0); | |
| 75 return gcov_var.start + gcov_var.offset; | |
| 76 } | |
| 77 | |
| 78 /* Return nonzero if the error flag is set. */ | |
| 79 /* We need to expose this function when compiling for gcov-tool. */ | |
| 80 #ifndef IN_GCOV_TOOL | |
| 81 static inline | |
| 82 #endif | |
| 83 int | |
| 84 gcov_is_error (void) | |
| 85 { | |
| 86 return gcov_var.file ? gcov_var.error : 1; | |
| 87 } | |
| 88 | |
| 89 #if IN_LIBGCOV | |
| 90 /* Move to beginning of file and initialize for writing. */ | |
| 91 GCOV_LINKAGE inline void | |
| 92 gcov_rewrite (void) | |
| 93 { | |
| 94 gcov_var.mode = -1; | |
| 95 gcov_var.start = 0; | |
| 96 gcov_var.offset = 0; | |
| 97 fseek (gcov_var.file, 0L, SEEK_SET); | |
| 98 } | |
| 99 #endif | |
| 100 | |
| 0 | 101 static inline gcov_unsigned_t from_file (gcov_unsigned_t value) |
| 102 { | |
| 103 #if !IN_LIBGCOV | |
| 104 if (gcov_var.endian) | |
| 105 { | |
| 106 value = (value >> 16) | (value << 16); | |
| 107 value = ((value & 0xff00ff) << 8) | ((value >> 8) & 0xff00ff); | |
| 108 } | |
| 109 #endif | |
| 110 return value; | |
| 111 } | |
| 112 | |
| 113 /* Open a gcov file. NAME is the name of the file to open and MODE | |
| 114 indicates whether a new file should be created, or an existing file | |
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115 opened. If MODE is >= 0 an existing file will be opened, if |
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116 possible, and if MODE is <= 0, a new file will be created. Use |
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117 MODE=0 to attempt to reopen an existing file and then fall back on |
| 111 | 118 creating a new one. If MODE > 0, the file will be opened in |
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119 read-only mode. Otherwise it will be opened for modification. |
| 111 | 120 Return zero on failure, non-zero on success. */ |
| 0 | 121 |
| 122 GCOV_LINKAGE int | |
| 123 #if IN_LIBGCOV | |
| 124 gcov_open (const char *name) | |
| 125 #else | |
| 126 gcov_open (const char *name, int mode) | |
| 127 #endif | |
| 128 { | |
| 129 #if IN_LIBGCOV | |
| 111 | 130 int mode = 0; |
| 0 | 131 #endif |
| 132 #if GCOV_LOCKED | |
| 133 struct flock s_flock; | |
| 134 int fd; | |
| 135 | |
| 136 s_flock.l_whence = SEEK_SET; | |
| 137 s_flock.l_start = 0; | |
| 138 s_flock.l_len = 0; /* Until EOF. */ | |
| 139 s_flock.l_pid = getpid (); | |
| 140 #endif | |
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141 |
| 111 | 142 gcov_nonruntime_assert (!gcov_var.file); |
| 0 | 143 gcov_var.start = 0; |
| 144 gcov_var.offset = gcov_var.length = 0; | |
| 145 gcov_var.overread = -1u; | |
| 146 gcov_var.error = 0; | |
| 147 #if !IN_LIBGCOV | |
| 148 gcov_var.endian = 0; | |
| 149 #endif | |
| 150 #if GCOV_LOCKED | |
| 151 if (mode > 0) | |
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152 { |
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153 /* Read-only mode - acquire a read-lock. */ |
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154 s_flock.l_type = F_RDLCK; |
| 111 | 155 /* pass mode (ignored) for compatibility */ |
| 156 fd = open (name, O_RDONLY, S_IRUSR | S_IWUSR); | |
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157 } |
| 0 | 158 else |
| 111 | 159 { |
| 160 /* Write mode - acquire a write-lock. */ | |
| 161 s_flock.l_type = F_WRLCK; | |
| 162 /* Truncate if force new mode. */ | |
| 163 fd = open (name, O_RDWR | O_CREAT | (mode < 0 ? O_TRUNC : 0), 0666); | |
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164 } |
| 0 | 165 if (fd < 0) |
| 166 return 0; | |
| 167 | |
| 168 while (fcntl (fd, F_SETLKW, &s_flock) && errno == EINTR) | |
| 169 continue; | |
| 170 | |
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171 gcov_var.file = fdopen (fd, (mode > 0) ? "rb" : "r+b"); |
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172 |
| 0 | 173 if (!gcov_var.file) |
| 174 { | |
| 175 close (fd); | |
| 176 return 0; | |
| 177 } | |
| 178 #else | |
| 179 if (mode >= 0) | |
| 111 | 180 /* Open an existing file. */ |
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181 gcov_var.file = fopen (name, (mode > 0) ? "rb" : "r+b"); |
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182 |
| 0 | 183 if (gcov_var.file) |
| 111 | 184 mode = 1; |
| 0 | 185 else if (mode <= 0) |
| 111 | 186 /* Create a new file. */ |
| 187 gcov_var.file = fopen (name, "w+b"); | |
| 188 | |
| 0 | 189 if (!gcov_var.file) |
| 190 return 0; | |
| 191 #endif | |
| 192 | |
| 111 | 193 gcov_var.mode = mode ? mode : 1; |
| 194 | |
| 0 | 195 setbuf (gcov_var.file, (char *)0); |
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196 |
| 0 | 197 return 1; |
| 198 } | |
| 199 | |
| 200 /* Close the current gcov file. Flushes data to disk. Returns nonzero | |
| 201 on failure or error flag set. */ | |
| 202 | |
| 203 GCOV_LINKAGE int | |
| 204 gcov_close (void) | |
| 205 { | |
| 206 if (gcov_var.file) | |
| 207 { | |
| 208 #if !IN_GCOV | |
| 209 if (gcov_var.offset && gcov_var.mode < 0) | |
| 210 gcov_write_block (gcov_var.offset); | |
| 211 #endif | |
| 212 fclose (gcov_var.file); | |
| 213 gcov_var.file = 0; | |
| 214 gcov_var.length = 0; | |
| 215 } | |
| 216 #if !IN_LIBGCOV | |
| 217 free (gcov_var.buffer); | |
| 218 gcov_var.alloc = 0; | |
| 219 gcov_var.buffer = 0; | |
| 220 #endif | |
| 221 gcov_var.mode = 0; | |
| 222 return gcov_var.error; | |
| 223 } | |
| 224 | |
| 225 #if !IN_LIBGCOV | |
| 226 /* Check if MAGIC is EXPECTED. Use it to determine endianness of the | |
| 227 file. Returns +1 for same endian, -1 for other endian and zero for | |
| 228 not EXPECTED. */ | |
| 229 | |
| 230 GCOV_LINKAGE int | |
| 231 gcov_magic (gcov_unsigned_t magic, gcov_unsigned_t expected) | |
| 232 { | |
| 233 if (magic == expected) | |
| 234 return 1; | |
| 235 magic = (magic >> 16) | (magic << 16); | |
| 236 magic = ((magic & 0xff00ff) << 8) | ((magic >> 8) & 0xff00ff); | |
| 237 if (magic == expected) | |
| 238 { | |
| 239 gcov_var.endian = 1; | |
| 240 return -1; | |
| 241 } | |
| 242 return 0; | |
| 243 } | |
| 244 #endif | |
| 245 | |
| 246 #if !IN_LIBGCOV | |
| 247 static void | |
| 248 gcov_allocate (unsigned length) | |
| 249 { | |
| 250 size_t new_size = gcov_var.alloc; | |
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251 |
| 0 | 252 if (!new_size) |
| 253 new_size = GCOV_BLOCK_SIZE; | |
| 254 new_size += length; | |
| 255 new_size *= 2; | |
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256 |
| 0 | 257 gcov_var.alloc = new_size; |
| 258 gcov_var.buffer = XRESIZEVAR (gcov_unsigned_t, gcov_var.buffer, new_size << 2); | |
| 259 } | |
| 260 #endif | |
| 261 | |
| 262 #if !IN_GCOV | |
| 263 /* Write out the current block, if needs be. */ | |
| 264 | |
| 265 static void | |
| 266 gcov_write_block (unsigned size) | |
| 267 { | |
| 268 if (fwrite (gcov_var.buffer, size << 2, 1, gcov_var.file) != 1) | |
| 269 gcov_var.error = 1; | |
| 270 gcov_var.start += size; | |
| 271 gcov_var.offset -= size; | |
| 272 } | |
| 273 | |
| 274 /* Allocate space to write BYTES bytes to the gcov file. Return a | |
| 275 pointer to those bytes, or NULL on failure. */ | |
| 276 | |
| 277 static gcov_unsigned_t * | |
| 278 gcov_write_words (unsigned words) | |
| 279 { | |
| 280 gcov_unsigned_t *result; | |
| 281 | |
| 111 | 282 gcov_nonruntime_assert (gcov_var.mode < 0); |
| 0 | 283 #if IN_LIBGCOV |
| 284 if (gcov_var.offset >= GCOV_BLOCK_SIZE) | |
| 285 { | |
| 286 gcov_write_block (GCOV_BLOCK_SIZE); | |
| 287 if (gcov_var.offset) | |
| 288 { | |
| 289 memcpy (gcov_var.buffer, gcov_var.buffer + GCOV_BLOCK_SIZE, 4); | |
| 290 } | |
| 291 } | |
| 292 #else | |
| 293 if (gcov_var.offset + words > gcov_var.alloc) | |
| 294 gcov_allocate (gcov_var.offset + words); | |
| 295 #endif | |
| 296 result = &gcov_var.buffer[gcov_var.offset]; | |
| 297 gcov_var.offset += words; | |
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298 |
| 0 | 299 return result; |
| 300 } | |
| 301 | |
| 302 /* Write unsigned VALUE to coverage file. Sets error flag | |
| 303 appropriately. */ | |
| 304 | |
| 305 GCOV_LINKAGE void | |
| 306 gcov_write_unsigned (gcov_unsigned_t value) | |
| 307 { | |
| 308 gcov_unsigned_t *buffer = gcov_write_words (1); | |
| 309 | |
| 310 buffer[0] = value; | |
| 311 } | |
| 312 | |
| 313 /* Write counter VALUE to coverage file. Sets error flag | |
| 314 appropriately. */ | |
| 315 | |
| 316 #if IN_LIBGCOV | |
| 317 GCOV_LINKAGE void | |
| 318 gcov_write_counter (gcov_type value) | |
| 319 { | |
| 320 gcov_unsigned_t *buffer = gcov_write_words (2); | |
| 321 | |
| 322 buffer[0] = (gcov_unsigned_t) value; | |
| 323 if (sizeof (value) > sizeof (gcov_unsigned_t)) | |
| 324 buffer[1] = (gcov_unsigned_t) (value >> 32); | |
| 325 else | |
| 326 buffer[1] = 0; | |
| 327 } | |
| 328 #endif /* IN_LIBGCOV */ | |
| 329 | |
| 330 #if !IN_LIBGCOV | |
| 331 /* Write STRING to coverage file. Sets error flag on file | |
| 332 error, overflow flag on overflow */ | |
| 333 | |
| 334 GCOV_LINKAGE void | |
| 335 gcov_write_string (const char *string) | |
| 336 { | |
| 337 unsigned length = 0; | |
| 338 unsigned alloc = 0; | |
| 339 gcov_unsigned_t *buffer; | |
| 340 | |
| 341 if (string) | |
| 342 { | |
| 343 length = strlen (string); | |
| 344 alloc = (length + 4) >> 2; | |
| 345 } | |
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346 |
| 0 | 347 buffer = gcov_write_words (1 + alloc); |
| 348 | |
| 349 buffer[0] = alloc; | |
| 111 | 350 |
| 351 if (alloc > 0) | |
| 352 { | |
| 353 buffer[alloc] = 0; /* place nul terminators. */ | |
| 354 memcpy (&buffer[1], string, length); | |
| 355 } | |
| 356 } | |
| 357 #endif | |
| 358 | |
| 359 #if !IN_LIBGCOV | |
| 360 /* Write FILENAME to coverage file. Sets error flag on file | |
| 361 error, overflow flag on overflow */ | |
| 362 | |
| 363 GCOV_LINKAGE void | |
| 364 gcov_write_filename (const char *filename) | |
| 365 { | |
| 366 if (profile_abs_path_flag && filename && filename[0] | |
| 367 && !(IS_DIR_SEPARATOR (filename[0]) | |
| 368 #if HAVE_DOS_BASED_FILE_SYSTEM | |
| 369 || filename[1] == ':' | |
| 370 #endif | |
| 371 )) | |
| 372 { | |
| 373 char *buf = getcwd (NULL, 0); | |
| 374 if (buf != NULL && buf[0]) | |
| 375 { | |
| 376 size_t len = strlen (buf); | |
| 377 buf = (char*)xrealloc (buf, len + strlen (filename) + 2); | |
| 378 if (!IS_DIR_SEPARATOR (buf[len - 1])) | |
| 379 strcat (buf, "/"); | |
| 380 strcat (buf, filename); | |
| 381 gcov_write_string (buf); | |
| 382 free (buf); | |
| 383 return; | |
| 384 } | |
| 385 } | |
| 386 | |
| 387 gcov_write_string (filename); | |
| 0 | 388 } |
| 389 #endif | |
| 390 | |
| 391 #if !IN_LIBGCOV | |
| 392 /* Write a tag TAG and reserve space for the record length. Return a | |
| 393 value to be used for gcov_write_length. */ | |
| 394 | |
| 395 GCOV_LINKAGE gcov_position_t | |
| 396 gcov_write_tag (gcov_unsigned_t tag) | |
| 397 { | |
| 398 gcov_position_t result = gcov_var.start + gcov_var.offset; | |
| 399 gcov_unsigned_t *buffer = gcov_write_words (2); | |
| 400 | |
| 401 buffer[0] = tag; | |
| 402 buffer[1] = 0; | |
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403 |
| 0 | 404 return result; |
| 405 } | |
| 406 | |
| 407 /* Write a record length using POSITION, which was returned by | |
| 408 gcov_write_tag. The current file position is the end of the | |
| 409 record, and is restored before returning. Returns nonzero on | |
| 410 overflow. */ | |
| 411 | |
| 412 GCOV_LINKAGE void | |
| 413 gcov_write_length (gcov_position_t position) | |
| 414 { | |
| 415 unsigned offset; | |
| 416 gcov_unsigned_t length; | |
| 417 gcov_unsigned_t *buffer; | |
| 418 | |
| 111 | 419 gcov_nonruntime_assert (gcov_var.mode < 0); |
| 420 gcov_nonruntime_assert (position + 2 <= gcov_var.start + gcov_var.offset); | |
| 421 gcov_nonruntime_assert (position >= gcov_var.start); | |
| 0 | 422 offset = position - gcov_var.start; |
| 423 length = gcov_var.offset - offset - 2; | |
| 424 buffer = (gcov_unsigned_t *) &gcov_var.buffer[offset]; | |
| 425 buffer[1] = length; | |
| 426 if (gcov_var.offset >= GCOV_BLOCK_SIZE) | |
| 427 gcov_write_block (gcov_var.offset); | |
| 428 } | |
| 429 | |
| 430 #else /* IN_LIBGCOV */ | |
| 431 | |
| 432 /* Write a tag TAG and length LENGTH. */ | |
| 433 | |
| 434 GCOV_LINKAGE void | |
| 435 gcov_write_tag_length (gcov_unsigned_t tag, gcov_unsigned_t length) | |
| 436 { | |
| 437 gcov_unsigned_t *buffer = gcov_write_words (2); | |
| 438 | |
| 439 buffer[0] = tag; | |
| 440 buffer[1] = length; | |
| 441 } | |
| 442 | |
| 443 /* Write a summary structure to the gcov file. Return nonzero on | |
| 444 overflow. */ | |
| 445 | |
| 446 GCOV_LINKAGE void | |
| 447 gcov_write_summary (gcov_unsigned_t tag, const struct gcov_summary *summary) | |
| 448 { | |
| 131 | 449 gcov_write_tag_length (tag, GCOV_TAG_SUMMARY_LENGTH); |
| 450 gcov_write_unsigned (summary->runs); | |
| 451 gcov_write_unsigned (summary->sum_max); | |
| 452 } | |
| 0 | 453 |
| 454 #endif /* IN_LIBGCOV */ | |
| 455 | |
| 456 #endif /*!IN_GCOV */ | |
| 457 | |
| 458 /* Return a pointer to read BYTES bytes from the gcov file. Returns | |
| 459 NULL on failure (read past EOF). */ | |
| 460 | |
| 461 static const gcov_unsigned_t * | |
| 462 gcov_read_words (unsigned words) | |
| 463 { | |
| 464 const gcov_unsigned_t *result; | |
| 465 unsigned excess = gcov_var.length - gcov_var.offset; | |
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466 |
| 111 | 467 if (gcov_var.mode <= 0) |
| 468 return NULL; | |
| 469 | |
| 0 | 470 if (excess < words) |
| 471 { | |
| 472 gcov_var.start += gcov_var.offset; | |
| 473 if (excess) | |
| 474 { | |
| 111 | 475 #if IN_LIBGCOV |
| 0 | 476 memcpy (gcov_var.buffer, gcov_var.buffer + gcov_var.offset, 4); |
| 111 | 477 #else |
| 478 memmove (gcov_var.buffer, gcov_var.buffer + gcov_var.offset, | |
| 479 excess * 4); | |
| 480 #endif | |
| 0 | 481 } |
| 482 gcov_var.offset = 0; | |
| 483 gcov_var.length = excess; | |
| 484 #if IN_LIBGCOV | |
| 485 excess = GCOV_BLOCK_SIZE; | |
| 486 #else | |
| 487 if (gcov_var.length + words > gcov_var.alloc) | |
| 488 gcov_allocate (gcov_var.length + words); | |
| 489 excess = gcov_var.alloc - gcov_var.length; | |
| 490 #endif | |
| 491 excess = fread (gcov_var.buffer + gcov_var.length, | |
| 492 1, excess << 2, gcov_var.file) >> 2; | |
| 493 gcov_var.length += excess; | |
| 494 if (gcov_var.length < words) | |
| 495 { | |
| 496 gcov_var.overread += words - gcov_var.length; | |
| 497 gcov_var.length = 0; | |
| 498 return 0; | |
| 499 } | |
| 500 } | |
| 501 result = &gcov_var.buffer[gcov_var.offset]; | |
| 502 gcov_var.offset += words; | |
| 503 return result; | |
| 504 } | |
| 505 | |
| 506 /* Read unsigned value from a coverage file. Sets error flag on file | |
| 507 error, overflow flag on overflow */ | |
| 508 | |
| 509 GCOV_LINKAGE gcov_unsigned_t | |
| 510 gcov_read_unsigned (void) | |
| 511 { | |
| 512 gcov_unsigned_t value; | |
| 513 const gcov_unsigned_t *buffer = gcov_read_words (1); | |
| 514 | |
| 515 if (!buffer) | |
| 516 return 0; | |
| 517 value = from_file (buffer[0]); | |
| 518 return value; | |
| 519 } | |
| 520 | |
| 521 /* Read counter value from a coverage file. Sets error flag on file | |
| 522 error, overflow flag on overflow */ | |
| 523 | |
| 524 GCOV_LINKAGE gcov_type | |
| 525 gcov_read_counter (void) | |
| 526 { | |
| 527 gcov_type value; | |
| 528 const gcov_unsigned_t *buffer = gcov_read_words (2); | |
| 529 | |
| 530 if (!buffer) | |
| 531 return 0; | |
| 532 value = from_file (buffer[0]); | |
| 533 if (sizeof (value) > sizeof (gcov_unsigned_t)) | |
| 534 value |= ((gcov_type) from_file (buffer[1])) << 32; | |
| 535 else if (buffer[1]) | |
| 536 gcov_var.error = -1; | |
| 537 | |
| 538 return value; | |
| 539 } | |
| 540 | |
| 131 | 541 /* Mangle filename path of BASE and output new allocated pointer with |
| 542 mangled path. */ | |
| 543 | |
| 544 char * | |
| 545 mangle_path (char const *base) | |
| 546 { | |
| 547 /* Convert '/' to '#', convert '..' to '^', | |
| 548 convert ':' to '~' on DOS based file system. */ | |
| 549 const char *probe; | |
| 145 | 550 char *buffer = (char *)xmalloc (strlen (base) + 1); |
| 131 | 551 char *ptr = buffer; |
| 552 | |
| 553 #if HAVE_DOS_BASED_FILE_SYSTEM | |
| 554 if (base[0] && base[1] == ':') | |
| 555 { | |
| 556 ptr[0] = base[0]; | |
| 557 ptr[1] = '~'; | |
| 558 ptr += 2; | |
| 559 base += 2; | |
| 560 } | |
| 561 #endif | |
| 562 for (; *base; base = probe) | |
| 563 { | |
| 564 size_t len; | |
| 565 | |
| 566 for (probe = base; *probe; probe++) | |
| 567 if (*probe == '/') | |
| 568 break; | |
| 569 len = probe - base; | |
| 570 if (len == 2 && base[0] == '.' && base[1] == '.') | |
| 571 *ptr++ = '^'; | |
| 572 else | |
| 573 { | |
| 574 memcpy (ptr, base, len); | |
| 575 ptr += len; | |
| 576 } | |
| 577 if (*probe) | |
| 578 { | |
| 579 *ptr++ = '#'; | |
| 580 probe++; | |
| 581 } | |
| 582 } | |
| 583 | |
| 584 /* Terminate the string. */ | |
| 585 *ptr = '\0'; | |
| 586 | |
| 587 return buffer; | |
| 588 } | |
| 589 | |
| 111 | 590 /* We need to expose the below function when compiling for gcov-tool. */ |
| 591 | |
| 592 #if !IN_LIBGCOV || defined (IN_GCOV_TOOL) | |
| 0 | 593 /* Read string from coverage file. Returns a pointer to a static |
| 594 buffer, or NULL on empty string. You must copy the string before | |
| 595 calling another gcov function. */ | |
| 596 | |
| 597 GCOV_LINKAGE const char * | |
| 598 gcov_read_string (void) | |
| 599 { | |
| 600 unsigned length = gcov_read_unsigned (); | |
|
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parents:
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diff
changeset
|
601 |
| 0 | 602 if (!length) |
| 603 return 0; | |
| 604 | |
| 605 return (const char *) gcov_read_words (length); | |
| 606 } | |
| 607 #endif | |
| 608 | |
| 609 GCOV_LINKAGE void | |
| 610 gcov_read_summary (struct gcov_summary *summary) | |
| 611 { | |
| 131 | 612 summary->runs = gcov_read_unsigned (); |
| 613 summary->sum_max = gcov_read_unsigned (); | |
| 0 | 614 } |
| 615 | |
| 111 | 616 /* We need to expose the below function when compiling for gcov-tool. */ |
| 617 | |
| 618 #if !IN_LIBGCOV || defined (IN_GCOV_TOOL) | |
| 0 | 619 /* Reset to a known position. BASE should have been obtained from |
| 620 gcov_position, LENGTH should be a record length. */ | |
| 621 | |
| 622 GCOV_LINKAGE void | |
| 623 gcov_sync (gcov_position_t base, gcov_unsigned_t length) | |
| 624 { | |
| 111 | 625 gcov_nonruntime_assert (gcov_var.mode > 0); |
| 0 | 626 base += length; |
| 627 if (base - gcov_var.start <= gcov_var.length) | |
| 628 gcov_var.offset = base - gcov_var.start; | |
| 629 else | |
| 630 { | |
| 631 gcov_var.offset = gcov_var.length = 0; | |
| 632 fseek (gcov_var.file, base << 2, SEEK_SET); | |
| 633 gcov_var.start = ftell (gcov_var.file) >> 2; | |
| 634 } | |
| 635 } | |
| 636 #endif | |
| 637 | |
| 638 #if IN_LIBGCOV | |
| 639 /* Move to a given position in a gcov file. */ | |
| 640 | |
| 641 GCOV_LINKAGE void | |
| 642 gcov_seek (gcov_position_t base) | |
| 643 { | |
| 644 if (gcov_var.offset) | |
| 645 gcov_write_block (gcov_var.offset); | |
| 646 fseek (gcov_var.file, base << 2, SEEK_SET); | |
| 647 gcov_var.start = ftell (gcov_var.file) >> 2; | |
| 648 } | |
| 649 #endif | |
| 650 | |
| 651 #if IN_GCOV > 0 | |
| 652 /* Return the modification time of the current gcov file. */ | |
| 653 | |
| 654 GCOV_LINKAGE time_t | |
| 655 gcov_time (void) | |
| 656 { | |
| 657 struct stat status; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
658 |
| 0 | 659 if (fstat (fileno (gcov_var.file), &status)) |
| 660 return 0; | |
| 661 else | |
| 662 return status.st_mtime; | |
| 663 } | |
| 664 #endif /* IN_GCOV */ |