111
|
1 /* Routines required for instrumenting a program. */
|
|
2 /* Compile this one with gcc. */
|
145
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3 /* Copyright (C) 1989-2020 Free Software Foundation, Inc.
|
111
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4
|
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5 This file is part of GCC.
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6
|
|
7 GCC is free software; you can redistribute it and/or modify it under
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8 the terms of the GNU General Public License as published by the Free
|
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9 Software Foundation; either version 3, or (at your option) any later
|
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10 version.
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11
|
|
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
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13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
15 for more details.
|
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16
|
|
17 Under Section 7 of GPL version 3, you are granted additional
|
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18 permissions described in the GCC Runtime Library Exception, version
|
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19 3.1, as published by the Free Software Foundation.
|
|
20
|
|
21 You should have received a copy of the GNU General Public License and
|
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22 a copy of the GCC Runtime Library Exception along with this program;
|
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23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
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24 <http://www.gnu.org/licenses/>. */
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25
|
|
26 #include "libgcov.h"
|
131
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27 #include "gcov-io.h"
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111
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28
|
|
29 #if defined(inhibit_libc)
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30 /* If libc and its header files are not available, provide dummy functions. */
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|
31
|
|
32 #if defined(L_gcov)
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33 void __gcov_init (struct gcov_info *p __attribute__ ((unused))) {}
|
|
34 #endif
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|
35
|
|
36 #else /* inhibit_libc */
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37
|
|
38 #include <string.h>
|
|
39 #if GCOV_LOCKED
|
|
40 #include <fcntl.h>
|
|
41 #include <errno.h>
|
|
42 #include <sys/stat.h>
|
|
43 #endif
|
|
44
|
|
45 #ifdef L_gcov
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46
|
|
47 /* A utility function for outputting errors. */
|
|
48 static int gcov_error (const char *, ...);
|
|
49
|
|
50 #if !IN_GCOV_TOOL
|
|
51 static void gcov_error_exit (void);
|
|
52 #endif
|
|
53
|
|
54 #include "gcov-io.c"
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|
55
|
145
|
56 #define GCOV_PROF_PREFIX "libgcov profiling error:%s:"
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|
57
|
111
|
58 struct gcov_fn_buffer
|
|
59 {
|
|
60 struct gcov_fn_buffer *next;
|
|
61 unsigned fn_ix;
|
|
62 struct gcov_fn_info info;
|
|
63 /* note gcov_fn_info ends in a trailing array. */
|
|
64 };
|
|
65
|
|
66 struct gcov_summary_buffer
|
|
67 {
|
|
68 struct gcov_summary_buffer *next;
|
|
69 struct gcov_summary summary;
|
|
70 };
|
|
71
|
|
72 /* A struct that bundles all the related information about the
|
|
73 gcda filename. */
|
|
74
|
|
75 struct gcov_filename
|
|
76 {
|
|
77 char *filename; /* filename buffer */
|
|
78 int strip; /* leading chars to strip from filename */
|
131
|
79 char *prefix; /* prefix string */
|
111
|
80 };
|
|
81
|
|
82 static struct gcov_fn_buffer *
|
|
83 free_fn_data (const struct gcov_info *gi_ptr, struct gcov_fn_buffer *buffer,
|
|
84 unsigned limit)
|
|
85 {
|
|
86 struct gcov_fn_buffer *next;
|
|
87 unsigned ix, n_ctr = 0;
|
|
88
|
|
89 if (!buffer)
|
|
90 return 0;
|
|
91 next = buffer->next;
|
|
92
|
|
93 for (ix = 0; ix != limit; ix++)
|
|
94 if (gi_ptr->merge[ix])
|
|
95 free (buffer->info.ctrs[n_ctr++].values);
|
|
96 free (buffer);
|
|
97 return next;
|
|
98 }
|
|
99
|
|
100 static struct gcov_fn_buffer **
|
|
101 buffer_fn_data (const char *filename, const struct gcov_info *gi_ptr,
|
|
102 struct gcov_fn_buffer **end_ptr, unsigned fn_ix)
|
|
103 {
|
|
104 unsigned n_ctrs = 0, ix = 0;
|
|
105 struct gcov_fn_buffer *fn_buffer;
|
|
106 unsigned len;
|
|
107
|
|
108 for (ix = GCOV_COUNTERS; ix--;)
|
|
109 if (gi_ptr->merge[ix])
|
|
110 n_ctrs++;
|
|
111
|
|
112 len = sizeof (*fn_buffer) + sizeof (fn_buffer->info.ctrs[0]) * n_ctrs;
|
|
113 fn_buffer = (struct gcov_fn_buffer *) xmalloc (len);
|
|
114
|
|
115 if (!fn_buffer)
|
|
116 goto fail;
|
|
117
|
|
118 fn_buffer->next = 0;
|
|
119 fn_buffer->fn_ix = fn_ix;
|
|
120 fn_buffer->info.ident = gcov_read_unsigned ();
|
|
121 fn_buffer->info.lineno_checksum = gcov_read_unsigned ();
|
|
122 fn_buffer->info.cfg_checksum = gcov_read_unsigned ();
|
|
123
|
|
124 for (n_ctrs = ix = 0; ix != GCOV_COUNTERS; ix++)
|
|
125 {
|
|
126 gcov_unsigned_t length;
|
|
127 gcov_type *values;
|
|
128
|
|
129 if (!gi_ptr->merge[ix])
|
|
130 continue;
|
|
131
|
|
132 if (gcov_read_unsigned () != GCOV_TAG_FOR_COUNTER (ix))
|
|
133 {
|
|
134 len = 0;
|
|
135 goto fail;
|
|
136 }
|
|
137
|
|
138 length = GCOV_TAG_COUNTER_NUM (gcov_read_unsigned ());
|
|
139 len = length * sizeof (gcov_type);
|
|
140 values = (gcov_type *) xmalloc (len);
|
|
141 if (!values)
|
|
142 goto fail;
|
|
143
|
|
144 fn_buffer->info.ctrs[n_ctrs].num = length;
|
|
145 fn_buffer->info.ctrs[n_ctrs].values = values;
|
|
146
|
|
147 while (length--)
|
|
148 *values++ = gcov_read_counter ();
|
|
149 n_ctrs++;
|
|
150 }
|
|
151
|
|
152 *end_ptr = fn_buffer;
|
|
153 return &fn_buffer->next;
|
|
154
|
|
155 fail:
|
145
|
156 gcov_error (GCOV_PROF_PREFIX "Function %u %s %u \n", filename, fn_ix,
|
111
|
157 len ? "cannot allocate" : "counter mismatch", len ? len : ix);
|
|
158
|
|
159 return (struct gcov_fn_buffer **)free_fn_data (gi_ptr, fn_buffer, ix);
|
|
160 }
|
|
161
|
145
|
162 /* Convert VERSION into a string description and return the it.
|
|
163 BUFFER is used for storage of the string. The code should be
|
|
164 aligned wit gcov-iov.c. */
|
|
165
|
|
166 static char *
|
|
167 gcov_version_string (char *buffer, char version[4])
|
|
168 {
|
|
169 if (version[0] < 'A' || version[0] > 'Z'
|
|
170 || version[1] < '0' || version[1] > '9'
|
|
171 || version[2] < '0' || version[2] > '9')
|
|
172 sprintf (buffer, "(unknown)");
|
|
173 else
|
|
174 {
|
|
175 unsigned major = 10 * (version[0] - 'A') + (version[1] - '0');
|
|
176 unsigned minor = version[2] - '0';
|
|
177 sprintf (buffer, "%u.%u (%s)", major, minor,
|
|
178 version[3] == '*' ? "release" : "experimental");
|
|
179 }
|
|
180 return buffer;
|
|
181 }
|
|
182
|
111
|
183 /* Check if VERSION of the info block PTR matches libgcov one.
|
|
184 Return 1 on success, or zero in case of versions mismatch.
|
|
185 If FILENAME is not NULL, its value used for reporting purposes
|
|
186 instead of value from the info block. */
|
|
187
|
|
188 static int
|
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189 gcov_version (struct gcov_info *ptr, gcov_unsigned_t version,
|
|
190 const char *filename)
|
|
191 {
|
|
192 if (version != GCOV_VERSION)
|
|
193 {
|
|
194 char v[4], e[4];
|
145
|
195 char version_string[128], expected_string[128];
|
111
|
196
|
|
197 GCOV_UNSIGNED2STRING (v, version);
|
|
198 GCOV_UNSIGNED2STRING (e, GCOV_VERSION);
|
|
199
|
145
|
200 gcov_error (GCOV_PROF_PREFIX "Version mismatch - expected %s (%.4s) "
|
|
201 "got %s (%.4s)\n",
|
|
202 filename? filename : ptr->filename,
|
|
203 gcov_version_string (expected_string, e), e,
|
|
204 gcov_version_string (version_string, v), v);
|
111
|
205 return 0;
|
|
206 }
|
|
207 return 1;
|
|
208 }
|
|
209
|
|
210 /* buffer for the fn_data from another program. */
|
|
211 static struct gcov_fn_buffer *fn_buffer;
|
|
212
|
|
213 /* Including system dependent components. */
|
|
214 #include "libgcov-driver-system.c"
|
|
215
|
145
|
216 /* Prune TOP N value COUNTERS. It's needed in order to preserve
|
|
217 reproducibility of builds. */
|
|
218
|
|
219 static void
|
|
220 prune_topn_counter (gcov_type *counters, gcov_type all)
|
|
221 {
|
|
222 for (unsigned i = 0; i < GCOV_TOPN_VALUES; i++)
|
|
223 if (counters[2 * i + 1] < all)
|
|
224 {
|
|
225 counters[2 * i] = 0;
|
|
226 counters[2 * i + 1] = 0;
|
|
227 }
|
|
228 }
|
|
229
|
|
230 /* Prune counters so that they are ready to store or merge. */
|
|
231
|
|
232 static void
|
|
233 prune_counters (struct gcov_info *gi)
|
|
234 {
|
|
235 for (unsigned i = 0; i < gi->n_functions; i++)
|
|
236 {
|
|
237 const struct gcov_fn_info *gfi = gi->functions[i];
|
|
238 const struct gcov_ctr_info *ci = gfi->ctrs;
|
|
239
|
|
240 for (unsigned j = 0; j < GCOV_COUNTERS; j++)
|
|
241 {
|
|
242 if (gi->merge[j] == NULL)
|
|
243 continue;
|
|
244
|
|
245 if (gi->merge[j] == __gcov_merge_topn)
|
|
246 {
|
|
247 gcc_assert (!(ci->num % GCOV_TOPN_VALUES_COUNTERS));
|
|
248 for (unsigned k = 0; k < (ci->num / GCOV_TOPN_VALUES_COUNTERS);
|
|
249 k++)
|
|
250 {
|
|
251 gcov_type *counters
|
|
252 = ci->values + (k * GCOV_TOPN_VALUES_COUNTERS);
|
|
253 prune_topn_counter (counters + 1, *counters);
|
|
254 }
|
|
255 }
|
|
256 ci++;
|
|
257 }
|
|
258 }
|
|
259 }
|
|
260
|
111
|
261 /* This function merges counters in GI_PTR to an existing gcda file.
|
|
262 Return 0 on success.
|
|
263 Return -1 on error. In this case, caller will goto read_fatal. */
|
|
264
|
|
265 static int
|
|
266 merge_one_data (const char *filename,
|
|
267 struct gcov_info *gi_ptr,
|
131
|
268 struct gcov_summary *summary)
|
111
|
269 {
|
|
270 gcov_unsigned_t tag, length;
|
|
271 unsigned t_ix;
|
131
|
272 int f_ix = -1;
|
111
|
273 int error = 0;
|
|
274 struct gcov_fn_buffer **fn_tail = &fn_buffer;
|
|
275
|
|
276 length = gcov_read_unsigned ();
|
|
277 if (!gcov_version (gi_ptr, length, filename))
|
|
278 return -1;
|
|
279
|
|
280 length = gcov_read_unsigned ();
|
|
281 if (length != gi_ptr->stamp)
|
|
282 {
|
131
|
283 /* Read from a different compilation. Overwrite the file. */
|
145
|
284 gcov_error (GCOV_PROF_PREFIX "overwriting an existing profile data "
|
131
|
285 "with a different timestamp\n", filename);
|
|
286 return 0;
|
111
|
287 }
|
|
288
|
131
|
289 tag = gcov_read_unsigned ();
|
|
290 if (tag != GCOV_TAG_OBJECT_SUMMARY)
|
|
291 goto read_mismatch;
|
|
292 length = gcov_read_unsigned ();
|
|
293 gcc_assert (length > 0);
|
|
294 gcov_read_summary (summary);
|
|
295
|
|
296 tag = gcov_read_unsigned ();
|
111
|
297 /* Merge execution counts for each function. */
|
|
298 for (f_ix = 0; (unsigned)f_ix != gi_ptr->n_functions;
|
|
299 f_ix++, tag = gcov_read_unsigned ())
|
|
300 {
|
|
301 const struct gcov_ctr_info *ci_ptr;
|
|
302 const struct gcov_fn_info *gfi_ptr = gi_ptr->functions[f_ix];
|
|
303
|
|
304 if (tag != GCOV_TAG_FUNCTION)
|
|
305 goto read_mismatch;
|
|
306
|
|
307 length = gcov_read_unsigned ();
|
|
308 if (!length)
|
|
309 /* This function did not appear in the other program.
|
|
310 We have nothing to merge. */
|
|
311 continue;
|
|
312
|
|
313 if (length != GCOV_TAG_FUNCTION_LENGTH)
|
|
314 goto read_mismatch;
|
|
315
|
|
316 if (!gfi_ptr || gfi_ptr->key != gi_ptr)
|
|
317 {
|
|
318 /* This function appears in the other program. We
|
|
319 need to buffer the information in order to write
|
|
320 it back out -- we'll be inserting data before
|
|
321 this point, so cannot simply keep the data in the
|
|
322 file. */
|
|
323 fn_tail = buffer_fn_data (filename, gi_ptr, fn_tail, f_ix);
|
|
324 if (!fn_tail)
|
|
325 goto read_mismatch;
|
|
326 continue;
|
|
327 }
|
|
328
|
|
329 length = gcov_read_unsigned ();
|
|
330 if (length != gfi_ptr->ident)
|
|
331 goto read_mismatch;
|
|
332
|
|
333 length = gcov_read_unsigned ();
|
|
334 if (length != gfi_ptr->lineno_checksum)
|
|
335 goto read_mismatch;
|
|
336
|
|
337 length = gcov_read_unsigned ();
|
|
338 if (length != gfi_ptr->cfg_checksum)
|
|
339 goto read_mismatch;
|
|
340
|
|
341 ci_ptr = gfi_ptr->ctrs;
|
|
342 for (t_ix = 0; t_ix < GCOV_COUNTERS; t_ix++)
|
|
343 {
|
|
344 gcov_merge_fn merge = gi_ptr->merge[t_ix];
|
|
345
|
|
346 if (!merge)
|
|
347 continue;
|
|
348
|
|
349 tag = gcov_read_unsigned ();
|
|
350 length = gcov_read_unsigned ();
|
|
351 if (tag != GCOV_TAG_FOR_COUNTER (t_ix)
|
|
352 || length != GCOV_TAG_COUNTER_LENGTH (ci_ptr->num))
|
|
353 goto read_mismatch;
|
|
354 (*merge) (ci_ptr->values, ci_ptr->num);
|
|
355 ci_ptr++;
|
|
356 }
|
|
357 if ((error = gcov_is_error ()))
|
|
358 goto read_error;
|
|
359 }
|
|
360
|
|
361 if (tag)
|
|
362 {
|
|
363 read_mismatch:;
|
145
|
364 gcov_error (GCOV_PROF_PREFIX "Merge mismatch for %s %u\n",
|
111
|
365 filename, f_ix >= 0 ? "function" : "summary",
|
|
366 f_ix < 0 ? -1 - f_ix : f_ix);
|
|
367 return -1;
|
|
368 }
|
|
369 return 0;
|
|
370
|
|
371 read_error:
|
145
|
372 gcov_error (GCOV_PROF_PREFIX "%s merging\n", filename,
|
111
|
373 error < 0 ? "Overflow": "Error");
|
|
374 return -1;
|
|
375 }
|
|
376
|
|
377 /* Write counters in GI_PTR and the summary in PRG to a gcda file. In
|
|
378 the case of appending to an existing file, SUMMARY_POS will be non-zero.
|
|
379 We will write the file starting from SUMMAY_POS. */
|
|
380
|
|
381 static void
|
|
382 write_one_data (const struct gcov_info *gi_ptr,
|
131
|
383 const struct gcov_summary *prg_p)
|
111
|
384 {
|
|
385 unsigned f_ix;
|
|
386
|
131
|
387 gcov_write_tag_length (GCOV_DATA_MAGIC, GCOV_VERSION);
|
|
388 gcov_write_unsigned (gi_ptr->stamp);
|
111
|
389
|
|
390 /* Generate whole program statistics. */
|
131
|
391 gcov_write_summary (GCOV_TAG_OBJECT_SUMMARY, prg_p);
|
111
|
392
|
|
393 /* Write execution counts for each function. */
|
|
394 for (f_ix = 0; f_ix != gi_ptr->n_functions; f_ix++)
|
|
395 {
|
|
396 unsigned buffered = 0;
|
|
397 const struct gcov_fn_info *gfi_ptr;
|
|
398 const struct gcov_ctr_info *ci_ptr;
|
|
399 gcov_unsigned_t length;
|
|
400 unsigned t_ix;
|
|
401
|
|
402 if (fn_buffer && fn_buffer->fn_ix == f_ix)
|
|
403 {
|
|
404 /* Buffered data from another program. */
|
|
405 buffered = 1;
|
|
406 gfi_ptr = &fn_buffer->info;
|
|
407 length = GCOV_TAG_FUNCTION_LENGTH;
|
|
408 }
|
|
409 else
|
|
410 {
|
|
411 gfi_ptr = gi_ptr->functions[f_ix];
|
|
412 if (gfi_ptr && gfi_ptr->key == gi_ptr)
|
|
413 length = GCOV_TAG_FUNCTION_LENGTH;
|
|
414 else
|
|
415 length = 0;
|
|
416 }
|
|
417
|
|
418 gcov_write_tag_length (GCOV_TAG_FUNCTION, length);
|
|
419 if (!length)
|
|
420 continue;
|
|
421
|
|
422 gcov_write_unsigned (gfi_ptr->ident);
|
|
423 gcov_write_unsigned (gfi_ptr->lineno_checksum);
|
|
424 gcov_write_unsigned (gfi_ptr->cfg_checksum);
|
|
425
|
|
426 ci_ptr = gfi_ptr->ctrs;
|
|
427 for (t_ix = 0; t_ix < GCOV_COUNTERS; t_ix++)
|
|
428 {
|
|
429 gcov_unsigned_t n_counts;
|
|
430 gcov_type *c_ptr;
|
|
431
|
|
432 if (!gi_ptr->merge[t_ix])
|
|
433 continue;
|
|
434
|
|
435 n_counts = ci_ptr->num;
|
|
436 gcov_write_tag_length (GCOV_TAG_FOR_COUNTER (t_ix),
|
|
437 GCOV_TAG_COUNTER_LENGTH (n_counts));
|
|
438 c_ptr = ci_ptr->values;
|
|
439 while (n_counts--)
|
|
440 gcov_write_counter (*c_ptr++);
|
|
441 ci_ptr++;
|
|
442 }
|
|
443 if (buffered)
|
|
444 fn_buffer = free_fn_data (gi_ptr, fn_buffer, GCOV_COUNTERS);
|
|
445 }
|
|
446
|
|
447 gcov_write_unsigned (0);
|
|
448 }
|
|
449
|
131
|
450 /* Helper function for merging summary. */
|
111
|
451
|
131
|
452 static void
|
|
453 merge_summary (int run_counted, struct gcov_summary *summary,
|
|
454 gcov_type run_max)
|
|
455 {
|
|
456 if (!run_counted)
|
|
457 {
|
|
458 summary->runs++;
|
|
459 summary->sum_max += run_max;
|
111
|
460 }
|
|
461 }
|
|
462
|
|
463 /* Dump the coverage counts for one gcov_info object. We merge with existing
|
|
464 counts when possible, to avoid growing the .da files ad infinitum. We use
|
|
465 this program's checksum to make sure we only accumulate whole program
|
|
466 statistics to the correct summary. An object file might be embedded
|
|
467 in two separate programs, and we must keep the two program
|
|
468 summaries separate. */
|
|
469
|
|
470 static void
|
|
471 dump_one_gcov (struct gcov_info *gi_ptr, struct gcov_filename *gf,
|
131
|
472 unsigned run_counted, gcov_type run_max)
|
111
|
473 {
|
131
|
474 struct gcov_summary summary = {};
|
111
|
475 int error;
|
|
476 gcov_unsigned_t tag;
|
|
477 fn_buffer = 0;
|
|
478
|
145
|
479 /* Prune current counters before we merge them. */
|
|
480 prune_counters (gi_ptr);
|
111
|
481
|
|
482 error = gcov_exit_open_gcda_file (gi_ptr, gf);
|
|
483 if (error == -1)
|
|
484 return;
|
|
485
|
|
486 tag = gcov_read_unsigned ();
|
|
487 if (tag)
|
|
488 {
|
|
489 /* Merge data from file. */
|
|
490 if (tag != GCOV_DATA_MAGIC)
|
|
491 {
|
145
|
492 gcov_error (GCOV_PROF_PREFIX "Not a gcov data file\n",
|
|
493 gf->filename);
|
111
|
494 goto read_fatal;
|
|
495 }
|
131
|
496 error = merge_one_data (gf->filename, gi_ptr, &summary);
|
111
|
497 if (error == -1)
|
|
498 goto read_fatal;
|
|
499 }
|
|
500
|
|
501 gcov_rewrite ();
|
|
502
|
131
|
503 merge_summary (run_counted, &summary, run_max);
|
111
|
504
|
131
|
505 write_one_data (gi_ptr, &summary);
|
111
|
506 /* fall through */
|
|
507
|
|
508 read_fatal:;
|
|
509 while (fn_buffer)
|
|
510 fn_buffer = free_fn_data (gi_ptr, fn_buffer, GCOV_COUNTERS);
|
|
511
|
|
512 if ((error = gcov_close ()))
|
|
513 gcov_error (error < 0 ?
|
145
|
514 GCOV_PROF_PREFIX "Overflow writing\n" :
|
|
515 GCOV_PROF_PREFIX "Error writing\n",
|
111
|
516 gf->filename);
|
|
517 }
|
|
518
|
|
519
|
|
520 /* Dump all the coverage counts for the program. It first computes program
|
|
521 summary and then traverses gcov_list list and dumps the gcov_info
|
|
522 objects one by one. */
|
|
523
|
|
524 #if !IN_GCOV_TOOL
|
|
525 static
|
|
526 #endif
|
|
527 void
|
|
528 gcov_do_dump (struct gcov_info *list, int run_counted)
|
|
529 {
|
|
530 struct gcov_info *gi_ptr;
|
|
531 struct gcov_filename gf;
|
|
532
|
131
|
533 /* Compute run_max of this program run. */
|
|
534 gcov_type run_max = 0;
|
|
535 for (gi_ptr = list; gi_ptr; gi_ptr = gi_ptr->next)
|
|
536 for (unsigned f_ix = 0; (unsigned)f_ix != gi_ptr->n_functions; f_ix++)
|
|
537 {
|
|
538 const struct gcov_ctr_info *cinfo
|
|
539 = &gi_ptr->functions[f_ix]->ctrs[GCOV_COUNTER_ARCS];
|
|
540
|
|
541 for (unsigned i = 0; i < cinfo->num; i++)
|
|
542 if (run_max < cinfo->values[i])
|
|
543 run_max = cinfo->values[i];
|
|
544 }
|
111
|
545
|
|
546 allocate_filename_struct (&gf);
|
|
547
|
|
548 /* Now merge each file. */
|
|
549 for (gi_ptr = list; gi_ptr; gi_ptr = gi_ptr->next)
|
131
|
550 {
|
|
551 dump_one_gcov (gi_ptr, &gf, run_counted, run_max);
|
|
552 free (gf.filename);
|
|
553 }
|
111
|
554
|
131
|
555 free (gf.prefix);
|
111
|
556 }
|
|
557
|
|
558 #if IN_GCOV_TOOL
|
|
559 const char *
|
|
560 __attribute__ ((unused))
|
|
561 gcov_get_filename (struct gcov_info *list)
|
|
562 {
|
|
563 return list->filename;
|
|
564 }
|
|
565 #endif
|
|
566
|
|
567 #if !IN_GCOV_TOOL
|
|
568 void
|
|
569 __gcov_dump_one (struct gcov_root *root)
|
|
570 {
|
|
571 if (root->dumped)
|
|
572 return;
|
|
573
|
|
574 gcov_do_dump (root->list, root->run_counted);
|
|
575
|
|
576 root->dumped = 1;
|
|
577 root->run_counted = 1;
|
|
578 }
|
|
579
|
|
580 /* Per-dynamic-object gcov state. */
|
|
581 struct gcov_root __gcov_root;
|
|
582
|
|
583 /* Exactly one of these will be live in the process image. */
|
|
584 struct gcov_master __gcov_master =
|
|
585 {GCOV_VERSION, 0};
|
|
586
|
|
587 void
|
|
588 __gcov_exit (void)
|
|
589 {
|
|
590 __gcov_dump_one (&__gcov_root);
|
|
591 if (__gcov_root.next)
|
|
592 __gcov_root.next->prev = __gcov_root.prev;
|
|
593 if (__gcov_root.prev)
|
|
594 __gcov_root.prev->next = __gcov_root.next;
|
|
595 else
|
|
596 __gcov_master.root = __gcov_root.next;
|
|
597
|
|
598 gcov_error_exit ();
|
|
599 }
|
|
600
|
|
601 /* Add a new object file onto the bb chain. Invoked automatically
|
|
602 when running an object file's global ctors. */
|
|
603
|
|
604 void
|
|
605 __gcov_init (struct gcov_info *info)
|
|
606 {
|
|
607 if (!info->version || !info->n_functions)
|
|
608 return;
|
|
609 if (gcov_version (info, info->version, 0))
|
|
610 {
|
|
611 if (!__gcov_root.list)
|
|
612 {
|
|
613 /* Add to master list and at exit function. */
|
|
614 if (gcov_version (NULL, __gcov_master.version, "<master>"))
|
|
615 {
|
|
616 __gcov_root.next = __gcov_master.root;
|
|
617 if (__gcov_master.root)
|
|
618 __gcov_master.root->prev = &__gcov_root;
|
|
619 __gcov_master.root = &__gcov_root;
|
|
620 }
|
|
621 }
|
|
622
|
|
623 info->next = __gcov_root.list;
|
|
624 __gcov_root.list = info;
|
|
625 }
|
|
626 }
|
|
627 #endif /* !IN_GCOV_TOOL */
|
|
628 #endif /* L_gcov */
|
|
629 #endif /* inhibit_libc */
|