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ca29da43 | 1 | /* File format for coverage information |
2a9f2ad3 KH |
2 | Copyright (C) 1996, 1997, 1998, 2000, 2002, 2003, 2004 |
3 | Free Software Foundation, Inc. | |
ca29da43 NS |
4 | Contributed by Bob Manson <manson@cygnus.com>. |
5 | Completely remangled by Nathan Sidwell <nathan@codesourcery.com>. | |
6 | ||
7 | This file is part of GCC. | |
8 | ||
9 | GCC is free software; you can redistribute it and/or modify it under | |
10 | the terms of the GNU General Public License as published by the Free | |
11 | Software Foundation; either version 2, or (at your option) any later | |
12 | version. | |
13 | ||
14 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
15 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
17 | for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GCC; see the file COPYING. If not, write to the Free | |
21 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
22 | 02111-1307, USA. */ | |
23 | ||
24 | /* Routines declared in gcov-io.h. This file should be #included by | |
25 | another source file, after having #included gcov-io.h. */ | |
26 | ||
7d63a2fa NS |
27 | #if !IN_GCOV |
28 | static void gcov_write_block (unsigned); | |
330d2e2a | 29 | static gcov_unsigned_t *gcov_write_words (unsigned); |
7d63a2fa | 30 | #endif |
330d2e2a | 31 | static const gcov_unsigned_t *gcov_read_words (unsigned); |
7d63a2fa NS |
32 | #if !IN_LIBGCOV |
33 | static void gcov_allocate (unsigned); | |
34 | #endif | |
35 | ||
160e2e4f NS |
36 | static inline gcov_unsigned_t from_file (gcov_unsigned_t value) |
37 | { | |
38 | #if !IN_LIBGCOV | |
39 | if (gcov_var.endian) | |
40 | { | |
41 | value = (value >> 16) | (value << 16); | |
42 | value = ((value & 0xff00ff) << 8) | ((value >> 8) & 0xff00ff); | |
43 | } | |
44 | #endif | |
45 | return value; | |
46 | } | |
47 | ||
ca29da43 NS |
48 | /* Open a gcov file. NAME is the name of the file to open and MODE |
49 | indicates whether a new file should be created, or an existing file | |
50 | opened for modification. If MODE is >= 0 an existing file will be | |
51 | opened, if possible, and if MODE is <= 0, a new file will be | |
52 | created. Use MODE=0 to attempt to reopen an existing file and then | |
53 | fall back on creating a new one. Return zero on failure, >0 on | |
54 | opening an existing file and <0 on creating a new one. */ | |
55 | ||
56 | GCOV_LINKAGE int | |
160e2e4f NS |
57 | #if IN_LIBGCOV |
58 | gcov_open (const char *name) | |
59 | #else | |
ca29da43 | 60 | gcov_open (const char *name, int mode) |
160e2e4f | 61 | #endif |
ca29da43 | 62 | { |
160e2e4f NS |
63 | #if IN_LIBGCOV |
64 | const int mode = 0; | |
65 | #endif | |
474f141e | 66 | #if GCOV_LOCKED |
ca29da43 | 67 | struct flock s_flock; |
c2cd64b5 | 68 | int fd; |
ca29da43 NS |
69 | |
70 | s_flock.l_type = F_WRLCK; | |
71 | s_flock.l_whence = SEEK_SET; | |
72 | s_flock.l_start = 0; | |
73 | s_flock.l_len = 0; /* Until EOF. */ | |
74 | s_flock.l_pid = getpid (); | |
75 | #endif | |
76 | ||
77 | if (gcov_var.file) | |
78 | abort (); | |
7d63a2fa NS |
79 | gcov_var.start = 0; |
80 | gcov_var.offset = gcov_var.length = 0; | |
330d2e2a | 81 | gcov_var.overread = -1u; |
7d63a2fa | 82 | gcov_var.error = 0; |
160e2e4f NS |
83 | #if !IN_LIBGCOV |
84 | gcov_var.endian = 0; | |
85 | #endif | |
c2cd64b5 JJ |
86 | #if GCOV_LOCKED |
87 | if (mode > 0) | |
88 | fd = open (name, O_RDWR); | |
89 | else | |
90 | fd = open (name, O_RDWR | O_CREAT, 0666); | |
91 | if (fd < 0) | |
92 | return 0; | |
93 | ||
94 | while (fcntl (fd, F_SETLKW, &s_flock) && errno == EINTR) | |
95 | continue; | |
96 | ||
97 | gcov_var.file = fdopen (fd, "r+b"); | |
98 | if (!gcov_var.file) | |
99 | { | |
100 | close (fd); | |
101 | return 0; | |
102 | } | |
103 | ||
104 | if (mode > 0) | |
105 | gcov_var.mode = 1; | |
106 | else if (mode == 0) | |
107 | { | |
108 | struct stat st; | |
109 | ||
110 | if (fstat (fd, &st) < 0) | |
111 | { | |
112 | fclose (gcov_var.file); | |
113 | gcov_var.file = 0; | |
114 | return 0; | |
115 | } | |
116 | if (st.st_size != 0) | |
117 | gcov_var.mode = 1; | |
118 | else | |
119 | gcov_var.mode = mode * 2 + 1; | |
120 | } | |
121 | else | |
122 | gcov_var.mode = mode * 2 + 1; | |
123 | #else | |
ca29da43 NS |
124 | if (mode >= 0) |
125 | gcov_var.file = fopen (name, "r+b"); | |
7d63a2fa NS |
126 | if (gcov_var.file) |
127 | gcov_var.mode = 1; | |
128 | else if (mode <= 0) | |
ca29da43 | 129 | { |
ca29da43 | 130 | gcov_var.file = fopen (name, "w+b"); |
7d63a2fa | 131 | if (gcov_var.file) |
160e2e4f | 132 | gcov_var.mode = mode * 2 + 1; |
ca29da43 NS |
133 | } |
134 | if (!gcov_var.file) | |
135 | return 0; | |
ca29da43 NS |
136 | #endif |
137 | ||
c2cd64b5 JJ |
138 | setbuf (gcov_var.file, (char *)0); |
139 | ||
160e2e4f | 140 | return 1; |
ca29da43 NS |
141 | } |
142 | ||
143 | /* Close the current gcov file. Flushes data to disk. Returns nonzero | |
144 | on failure or error flag set. */ | |
145 | ||
146 | GCOV_LINKAGE int | |
82a30d6f | 147 | gcov_close (void) |
ca29da43 | 148 | { |
ca29da43 NS |
149 | if (gcov_var.file) |
150 | { | |
7d63a2fa NS |
151 | #if !IN_GCOV |
152 | if (gcov_var.offset && gcov_var.mode < 0) | |
153 | gcov_write_block (gcov_var.offset); | |
154 | #endif | |
ca29da43 NS |
155 | fclose (gcov_var.file); |
156 | gcov_var.file = 0; | |
157 | gcov_var.length = 0; | |
158 | } | |
159 | #if !IN_LIBGCOV | |
160 | free (gcov_var.buffer); | |
161 | gcov_var.alloc = 0; | |
162 | gcov_var.buffer = 0; | |
163 | #endif | |
7d63a2fa NS |
164 | gcov_var.mode = 0; |
165 | return gcov_var.error; | |
166 | } | |
167 | ||
160e2e4f NS |
168 | #if !IN_LIBGCOV |
169 | /* Check if MAGIC is EXPECTED. Use it to determine endianness of the | |
170 | file. Returns +1 for same endian, -1 for other endian and zero for | |
171 | not EXPECTED. */ | |
172 | ||
173 | GCOV_LINKAGE int | |
174 | gcov_magic (gcov_unsigned_t magic, gcov_unsigned_t expected) | |
175 | { | |
176 | if (magic == expected) | |
177 | return 1; | |
178 | magic = (magic >> 16) | (magic << 16); | |
179 | magic = ((magic & 0xff00ff) << 8) | ((magic >> 8) & 0xff00ff); | |
180 | if (magic == expected) | |
181 | { | |
182 | gcov_var.endian = 1; | |
183 | return -1; | |
184 | } | |
185 | return 0; | |
186 | } | |
187 | #endif | |
188 | ||
7d63a2fa NS |
189 | #if !IN_LIBGCOV |
190 | static void | |
191 | gcov_allocate (unsigned length) | |
192 | { | |
193 | size_t new_size = gcov_var.alloc; | |
194 | ||
195 | if (!new_size) | |
196 | new_size = GCOV_BLOCK_SIZE; | |
197 | new_size += length; | |
198 | new_size *= 2; | |
199 | ||
200 | gcov_var.alloc = new_size; | |
330d2e2a | 201 | gcov_var.buffer = xrealloc (gcov_var.buffer, new_size << 2); |
ca29da43 | 202 | } |
7d63a2fa | 203 | #endif |
ca29da43 NS |
204 | |
205 | #if !IN_GCOV | |
7d63a2fa NS |
206 | /* Write out the current block, if needs be. */ |
207 | ||
208 | static void | |
209 | gcov_write_block (unsigned size) | |
210 | { | |
330d2e2a | 211 | if (fwrite (gcov_var.buffer, size << 2, 1, gcov_var.file) != 1) |
7d63a2fa NS |
212 | gcov_var.error = 1; |
213 | gcov_var.start += size; | |
214 | gcov_var.offset -= size; | |
215 | } | |
216 | ||
ca29da43 NS |
217 | /* Allocate space to write BYTES bytes to the gcov file. Return a |
218 | pointer to those bytes, or NULL on failure. */ | |
219 | ||
160e2e4f | 220 | static gcov_unsigned_t * |
330d2e2a | 221 | gcov_write_words (unsigned words) |
ca29da43 | 222 | { |
160e2e4f | 223 | gcov_unsigned_t *result; |
ca29da43 | 224 | |
7d63a2fa | 225 | GCOV_CHECK_WRITING (); |
ca29da43 | 226 | #if IN_LIBGCOV |
7d63a2fa NS |
227 | if (gcov_var.offset >= GCOV_BLOCK_SIZE) |
228 | { | |
229 | gcov_write_block (GCOV_BLOCK_SIZE); | |
230 | if (gcov_var.offset) | |
ca29da43 | 231 | { |
330d2e2a | 232 | GCOV_CHECK (gcov_var.offset == 1); |
7d63a2fa | 233 | memcpy (gcov_var.buffer, gcov_var.buffer + GCOV_BLOCK_SIZE, 4); |
ca29da43 | 234 | } |
7d63a2fa | 235 | } |
ca29da43 | 236 | #else |
330d2e2a NS |
237 | if (gcov_var.offset + words > gcov_var.alloc) |
238 | gcov_allocate (gcov_var.offset + words); | |
ca29da43 | 239 | #endif |
330d2e2a NS |
240 | result = &gcov_var.buffer[gcov_var.offset]; |
241 | gcov_var.offset += words; | |
ca29da43 | 242 | |
ca29da43 NS |
243 | return result; |
244 | } | |
245 | ||
246 | /* Write unsigned VALUE to coverage file. Sets error flag | |
247 | appropriately. */ | |
248 | ||
249 | GCOV_LINKAGE void | |
9b514d25 | 250 | gcov_write_unsigned (gcov_unsigned_t value) |
ca29da43 | 251 | { |
330d2e2a | 252 | gcov_unsigned_t *buffer = gcov_write_words (1); |
ca29da43 | 253 | |
160e2e4f | 254 | buffer[0] = value; |
ca29da43 NS |
255 | } |
256 | ||
257 | /* Write counter VALUE to coverage file. Sets error flag | |
258 | appropriately. */ | |
259 | ||
260 | #if IN_LIBGCOV | |
261 | GCOV_LINKAGE void | |
262 | gcov_write_counter (gcov_type value) | |
263 | { | |
330d2e2a | 264 | gcov_unsigned_t *buffer = gcov_write_words (2); |
ca29da43 | 265 | |
160e2e4f NS |
266 | buffer[0] = (gcov_unsigned_t) value; |
267 | if (sizeof (value) > sizeof (gcov_unsigned_t)) | |
268 | buffer[1] = (gcov_unsigned_t) (value >> 32); | |
269 | else | |
270 | buffer[1] = 0; | |
271 | ||
272 | if (value < 0) | |
ca29da43 | 273 | gcov_var.error = -1; |
ca29da43 NS |
274 | } |
275 | #endif /* IN_LIBGCOV */ | |
276 | ||
796621e8 | 277 | #if !IN_LIBGCOV |
ca29da43 NS |
278 | /* Write STRING to coverage file. Sets error flag on file |
279 | error, overflow flag on overflow */ | |
280 | ||
281 | GCOV_LINKAGE void | |
282 | gcov_write_string (const char *string) | |
283 | { | |
284 | unsigned length = 0; | |
160e2e4f NS |
285 | unsigned alloc = 0; |
286 | gcov_unsigned_t *buffer; | |
ca29da43 NS |
287 | |
288 | if (string) | |
289 | { | |
290 | length = strlen (string); | |
160e2e4f | 291 | alloc = (length + 4) >> 2; |
ca29da43 NS |
292 | } |
293 | ||
330d2e2a | 294 | buffer = gcov_write_words (1 + alloc); |
7d63a2fa | 295 | |
160e2e4f NS |
296 | buffer[0] = alloc; |
297 | buffer[alloc] = 0; | |
298 | memcpy (&buffer[1], string, length); | |
ca29da43 | 299 | } |
796621e8 | 300 | #endif |
ca29da43 | 301 | |
474f141e | 302 | #if !IN_LIBGCOV |
ca29da43 NS |
303 | /* Write a tag TAG and reserve space for the record length. Return a |
304 | value to be used for gcov_write_length. */ | |
305 | ||
9b514d25 NS |
306 | GCOV_LINKAGE gcov_position_t |
307 | gcov_write_tag (gcov_unsigned_t tag) | |
ca29da43 | 308 | { |
7d63a2fa | 309 | gcov_position_t result = gcov_var.start + gcov_var.offset; |
330d2e2a | 310 | gcov_unsigned_t *buffer = gcov_write_words (2); |
ca29da43 | 311 | |
160e2e4f NS |
312 | buffer[0] = tag; |
313 | buffer[1] = 0; | |
314 | ||
ca29da43 NS |
315 | return result; |
316 | } | |
317 | ||
318 | /* Write a record length using POSITION, which was returned by | |
319 | gcov_write_tag. The current file position is the end of the | |
320 | record, and is restored before returning. Returns nonzero on | |
321 | overflow. */ | |
322 | ||
323 | GCOV_LINKAGE void | |
9b514d25 | 324 | gcov_write_length (gcov_position_t position) |
ca29da43 | 325 | { |
7d63a2fa NS |
326 | unsigned offset; |
327 | gcov_unsigned_t length; | |
160e2e4f | 328 | gcov_unsigned_t *buffer; |
7d63a2fa NS |
329 | |
330 | GCOV_CHECK_WRITING (); | |
330d2e2a | 331 | GCOV_CHECK (position + 2 <= gcov_var.start + gcov_var.offset); |
7d63a2fa NS |
332 | GCOV_CHECK (position >= gcov_var.start); |
333 | offset = position - gcov_var.start; | |
330d2e2a | 334 | length = gcov_var.offset - offset - 2; |
160e2e4f NS |
335 | buffer = (gcov_unsigned_t *) &gcov_var.buffer[offset]; |
336 | buffer[1] = length; | |
7d63a2fa NS |
337 | if (gcov_var.offset >= GCOV_BLOCK_SIZE) |
338 | gcov_write_block (gcov_var.offset); | |
ca29da43 | 339 | } |
9b514d25 NS |
340 | |
341 | #else /* IN_LIBGCOV */ | |
474f141e NS |
342 | |
343 | /* Write a tag TAG and length LENGTH. */ | |
344 | ||
345 | GCOV_LINKAGE void | |
9b514d25 | 346 | gcov_write_tag_length (gcov_unsigned_t tag, gcov_unsigned_t length) |
474f141e | 347 | { |
330d2e2a | 348 | gcov_unsigned_t *buffer = gcov_write_words (2); |
474f141e | 349 | |
160e2e4f NS |
350 | buffer[0] = tag; |
351 | buffer[1] = length; | |
474f141e | 352 | } |
ca29da43 | 353 | |
6356f892 | 354 | /* Write a summary structure to the gcov file. Return nonzero on |
ca29da43 NS |
355 | overflow. */ |
356 | ||
357 | GCOV_LINKAGE void | |
9b514d25 | 358 | gcov_write_summary (gcov_unsigned_t tag, const struct gcov_summary *summary) |
ca29da43 | 359 | { |
cdb23767 NS |
360 | unsigned ix; |
361 | const struct gcov_ctr_summary *csum; | |
ca29da43 | 362 | |
474f141e | 363 | gcov_write_tag_length (tag, GCOV_TAG_SUMMARY_LENGTH); |
ca29da43 | 364 | gcov_write_unsigned (summary->checksum); |
9b514d25 | 365 | for (csum = summary->ctrs, ix = GCOV_COUNTERS_SUMMABLE; ix--; csum++) |
cdb23767 NS |
366 | { |
367 | gcov_write_unsigned (csum->num); | |
368 | gcov_write_unsigned (csum->runs); | |
369 | gcov_write_counter (csum->sum_all); | |
370 | gcov_write_counter (csum->run_max); | |
371 | gcov_write_counter (csum->sum_max); | |
372 | } | |
ca29da43 NS |
373 | } |
374 | #endif /* IN_LIBGCOV */ | |
375 | ||
376 | #endif /*!IN_GCOV */ | |
377 | ||
378 | /* Return a pointer to read BYTES bytes from the gcov file. Returns | |
71c0e7fc | 379 | NULL on failure (read past EOF). */ |
ca29da43 | 380 | |
160e2e4f | 381 | static const gcov_unsigned_t * |
330d2e2a | 382 | gcov_read_words (unsigned words) |
ca29da43 | 383 | { |
160e2e4f | 384 | const gcov_unsigned_t *result; |
7d63a2fa | 385 | unsigned excess = gcov_var.length - gcov_var.offset; |
ca29da43 | 386 | |
7d63a2fa | 387 | GCOV_CHECK_READING (); |
330d2e2a | 388 | if (excess < words) |
ca29da43 | 389 | { |
7d63a2fa NS |
390 | gcov_var.start += gcov_var.offset; |
391 | #if IN_LIBGCOV | |
392 | if (excess) | |
393 | { | |
330d2e2a | 394 | GCOV_CHECK (excess == 1); |
7d63a2fa NS |
395 | memcpy (gcov_var.buffer, gcov_var.buffer + gcov_var.offset, 4); |
396 | } | |
397 | #else | |
f820b0cf | 398 | memmove (gcov_var.buffer, gcov_var.buffer + gcov_var.offset, excess * 4); |
7d63a2fa NS |
399 | #endif |
400 | gcov_var.offset = 0; | |
401 | gcov_var.length = excess; | |
402 | #if IN_LIBGCOV | |
330d2e2a | 403 | GCOV_CHECK (!gcov_var.length || gcov_var.length == 1); |
7d63a2fa NS |
404 | excess = GCOV_BLOCK_SIZE; |
405 | #else | |
330d2e2a NS |
406 | if (gcov_var.length + words > gcov_var.alloc) |
407 | gcov_allocate (gcov_var.length + words); | |
7d63a2fa NS |
408 | excess = gcov_var.alloc - gcov_var.length; |
409 | #endif | |
dc1f1d7f | 410 | excess = fread (gcov_var.buffer + gcov_var.length, |
330d2e2a | 411 | 1, excess << 2, gcov_var.file) >> 2; |
7d63a2fa | 412 | gcov_var.length += excess; |
330d2e2a | 413 | if (gcov_var.length < words) |
7d63a2fa | 414 | { |
330d2e2a | 415 | gcov_var.overread += words - gcov_var.length; |
7d63a2fa NS |
416 | gcov_var.length = 0; |
417 | return 0; | |
418 | } | |
ca29da43 | 419 | } |
330d2e2a NS |
420 | result = &gcov_var.buffer[gcov_var.offset]; |
421 | gcov_var.offset += words; | |
ca29da43 NS |
422 | return result; |
423 | } | |
424 | ||
425 | /* Read unsigned value from a coverage file. Sets error flag on file | |
426 | error, overflow flag on overflow */ | |
427 | ||
9b514d25 | 428 | GCOV_LINKAGE gcov_unsigned_t |
82a30d6f | 429 | gcov_read_unsigned (void) |
ca29da43 | 430 | { |
160e2e4f | 431 | gcov_unsigned_t value; |
330d2e2a | 432 | const gcov_unsigned_t *buffer = gcov_read_words (1); |
ca29da43 NS |
433 | |
434 | if (!buffer) | |
435 | return 0; | |
160e2e4f | 436 | value = from_file (buffer[0]); |
ca29da43 NS |
437 | return value; |
438 | } | |
439 | ||
440 | /* Read counter value from a coverage file. Sets error flag on file | |
441 | error, overflow flag on overflow */ | |
442 | ||
443 | GCOV_LINKAGE gcov_type | |
82a30d6f | 444 | gcov_read_counter (void) |
ca29da43 | 445 | { |
160e2e4f | 446 | gcov_type value; |
330d2e2a | 447 | const gcov_unsigned_t *buffer = gcov_read_words (2); |
ca29da43 NS |
448 | |
449 | if (!buffer) | |
450 | return 0; | |
160e2e4f NS |
451 | value = from_file (buffer[0]); |
452 | if (sizeof (value) > sizeof (gcov_unsigned_t)) | |
453 | value |= ((gcov_type) from_file (buffer[1])) << 32; | |
454 | else if (buffer[1]) | |
455 | gcov_var.error = -1; | |
456 | ||
ca29da43 NS |
457 | if (value < 0) |
458 | gcov_var.error = -1; | |
459 | return value; | |
460 | } | |
461 | ||
462 | /* Read string from coverage file. Returns a pointer to a static | |
463 | buffer, or NULL on empty string. You must copy the string before | |
464 | calling another gcov function. */ | |
465 | ||
796621e8 | 466 | #if !IN_LIBGCOV |
ca29da43 | 467 | GCOV_LINKAGE const char * |
82a30d6f | 468 | gcov_read_string (void) |
ca29da43 NS |
469 | { |
470 | unsigned length = gcov_read_unsigned (); | |
471 | ||
472 | if (!length) | |
473 | return 0; | |
474 | ||
330d2e2a | 475 | return (const char *) gcov_read_words (length); |
ca29da43 | 476 | } |
796621e8 | 477 | #endif |
ca29da43 NS |
478 | |
479 | GCOV_LINKAGE void | |
480 | gcov_read_summary (struct gcov_summary *summary) | |
481 | { | |
cdb23767 NS |
482 | unsigned ix; |
483 | struct gcov_ctr_summary *csum; | |
484 | ||
ca29da43 | 485 | summary->checksum = gcov_read_unsigned (); |
9b514d25 | 486 | for (csum = summary->ctrs, ix = GCOV_COUNTERS_SUMMABLE; ix--; csum++) |
cdb23767 NS |
487 | { |
488 | csum->num = gcov_read_unsigned (); | |
489 | csum->runs = gcov_read_unsigned (); | |
490 | csum->sum_all = gcov_read_counter (); | |
491 | csum->run_max = gcov_read_counter (); | |
492 | csum->sum_max = gcov_read_counter (); | |
493 | } | |
ca29da43 NS |
494 | } |
495 | ||
7d63a2fa NS |
496 | #if !IN_LIBGCOV |
497 | /* Reset to a known position. BASE should have been obtained from | |
498 | gcov_position, LENGTH should be a record length. */ | |
499 | ||
500 | GCOV_LINKAGE void | |
501 | gcov_sync (gcov_position_t base, gcov_unsigned_t length) | |
502 | { | |
503 | GCOV_CHECK_READING (); | |
504 | base += length; | |
505 | if (base - gcov_var.start <= gcov_var.length) | |
506 | gcov_var.offset = base - gcov_var.start; | |
507 | else | |
508 | { | |
509 | gcov_var.offset = gcov_var.length = 0; | |
330d2e2a NS |
510 | fseek (gcov_var.file, base << 2, SEEK_SET); |
511 | gcov_var.start = ftell (gcov_var.file) >> 2; | |
7d63a2fa NS |
512 | } |
513 | } | |
514 | #endif | |
515 | ||
516 | #if IN_LIBGCOV | |
00cf2913 | 517 | /* Move to the a set position in a gcov file. */ |
7d63a2fa NS |
518 | |
519 | GCOV_LINKAGE void | |
520 | gcov_seek (gcov_position_t base) | |
521 | { | |
522 | GCOV_CHECK_WRITING (); | |
523 | if (gcov_var.offset) | |
524 | gcov_write_block (gcov_var.offset); | |
00cf2913 | 525 | fseek (gcov_var.file, base << 2, SEEK_SET); |
330d2e2a | 526 | gcov_var.start = ftell (gcov_var.file) >> 2; |
7d63a2fa NS |
527 | } |
528 | #endif | |
529 | ||
ca29da43 NS |
530 | #if IN_GCOV > 0 |
531 | /* Return the modification time of the current gcov file. */ | |
532 | ||
533 | GCOV_LINKAGE time_t | |
82a30d6f | 534 | gcov_time (void) |
ca29da43 NS |
535 | { |
536 | struct stat status; | |
537 | ||
538 | if (fstat (fileno (gcov_var.file), &status)) | |
539 | return 0; | |
540 | else | |
541 | return status.st_mtime; | |
542 | } | |
543 | #endif /* IN_GCOV */ |