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11c981a9 | 1 | /*- |
3ce1f295 | 2 | * Copyright (c) 1983, 1992, 1993, 2011 |
11c981a9 RM |
3 | * The Regents of the University of California. All rights reserved. |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
11c981a9 RM |
13 | * 4. Neither the name of the University nor the names of its contributors |
14 | * may be used to endorse or promote products derived from this software | |
15 | * without specific prior written permission. | |
16 | * | |
17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
27 | * SUCH DAMAGE. | |
28 | */ | |
11c981a9 RM |
29 | #include <sys/param.h> |
30 | #include <sys/time.h> | |
31 | #include <sys/gmon.h> | |
b20e47cb | 32 | #include <sys/gmon_out.h> |
5ae9d168 | 33 | #include <sys/uio.h> |
11c981a9 | 34 | |
3996f34b | 35 | #include <errno.h> |
11c981a9 RM |
36 | #include <stdio.h> |
37 | #include <fcntl.h> | |
b20e47cb | 38 | #include <unistd.h> |
3ce1f295 | 39 | #include <wchar.h> |
b20e47cb RM |
40 | |
41 | #include <stdio.h> | |
11c981a9 RM |
42 | #include <stdlib.h> |
43 | #include <string.h> | |
f521be31 | 44 | #include <stddef.h> |
11c981a9 | 45 | #include <unistd.h> |
66539a73 | 46 | #include <libc-internal.h> |
fbb37d25 | 47 | #include <not-cancel.h> |
d68171ed | 48 | |
33237fe8 AZN |
49 | #define TUNABLE_NAMESPACE gmon |
50 | #include <elf/dl-tunables.h> | |
31be941e | 51 | |
d165ca64 L |
52 | #ifdef PIC |
53 | # include <link.h> | |
54 | ||
55 | static int | |
56 | callback (struct dl_phdr_info *info, size_t size, void *data) | |
57 | { | |
58 | if (info->dlpi_name[0] == '\0') | |
59 | { | |
60 | /* The link map for the executable is created by calling | |
61 | _dl_new_object with "" as filename. dl_iterate_phdr | |
62 | calls the callback function with filename from the | |
63 | link map as dlpi_name. */ | |
64 | u_long *load_address = data; | |
65 | *load_address = (u_long) info->dlpi_addr; | |
66 | return 1; | |
67 | } | |
68 | ||
69 | return 0; | |
70 | } | |
71 | #endif | |
8dcc6a3f | 72 | |
100351c3 UD |
73 | /* Head of basic-block list or NULL. */ |
74 | struct __bb *__bb_head attribute_hidden; | |
b20e47cb | 75 | |
0e47dbd0 | 76 | struct gmonparam _gmonparam attribute_hidden = { GMON_PROF_OFF }; |
11c981a9 | 77 | |
b20e47cb RM |
78 | /* |
79 | * See profil(2) where this is described: | |
80 | */ | |
11c981a9 | 81 | static int s_scale; |
11c981a9 RM |
82 | #define SCALE_1_TO_1 0x10000L |
83 | ||
c647fb88 | 84 | #define ERR(s) __write_nocancel (STDERR_FILENO, s, sizeof (s) - 1) |
b20e47cb | 85 | |
79937577 UD |
86 | void moncontrol (int mode); |
87 | void __moncontrol (int mode); | |
fa426590 | 88 | libc_hidden_proto (__moncontrol) |
d165ca64 L |
89 | static void write_hist (int fd, u_long load_address); |
90 | static void write_call_graph (int fd, u_long load_address); | |
8d2f9410 | 91 | static void write_bb_counts (int fd); |
11336c16 | 92 | |
b20e47cb RM |
93 | /* |
94 | * Control profiling | |
95 | * profiling is what mcount checks to see if | |
96 | * all the data structures are ready. | |
97 | */ | |
98 | void | |
9d46370c | 99 | __moncontrol (int mode) |
b20e47cb RM |
100 | { |
101 | struct gmonparam *p = &_gmonparam; | |
102 | ||
bde12187 SK |
103 | /* Treat start request as stop if error or gmon not initialized. */ |
104 | if (mode && p->state != GMON_PROF_ERROR && p->tos != NULL) | |
b20e47cb RM |
105 | { |
106 | /* start */ | |
9a0a462c | 107 | __profil((void *) p->kcount, p->kcountsize, p->lowpc, s_scale); |
b20e47cb RM |
108 | p->state = GMON_PROF_ON; |
109 | } | |
110 | else | |
111 | { | |
112 | /* stop */ | |
9a0a462c | 113 | __profil(NULL, 0, 0, 0); |
bde12187 SK |
114 | /* Don't change the state if we ran into an error. */ |
115 | if (p->state != GMON_PROF_ERROR) | |
116 | p->state = GMON_PROF_OFF; | |
b20e47cb RM |
117 | } |
118 | } | |
fa426590 | 119 | libc_hidden_def (__moncontrol) |
69173865 | 120 | weak_alias (__moncontrol, moncontrol) |
11c981a9 | 121 | |
11c981a9 RM |
122 | |
123 | void | |
9d46370c | 124 | __monstartup (u_long lowpc, u_long highpc) |
11c981a9 | 125 | { |
2e09a79a | 126 | int o; |
b20e47cb RM |
127 | char *cp; |
128 | struct gmonparam *p = &_gmonparam; | |
31be941e SK |
129 | long int minarcs, maxarcs; |
130 | ||
31be941e SK |
131 | /* Read minarcs/maxarcs tunables. */ |
132 | minarcs = TUNABLE_GET (minarcs, int32_t, NULL); | |
133 | maxarcs = TUNABLE_GET (maxarcs, int32_t, NULL); | |
134 | if (maxarcs < minarcs) | |
135 | { | |
136 | ERR("monstartup: maxarcs < minarcs, setting maxarcs = minarcs\n"); | |
137 | maxarcs = minarcs; | |
138 | } | |
b20e47cb | 139 | |
bde12187 SK |
140 | /* |
141 | * If we are incorrectly called twice in a row (without an | |
142 | * intervening call to _mcleanup), ignore the second call to | |
143 | * prevent leaking memory. | |
144 | */ | |
145 | if (p->tos != NULL) | |
146 | return; | |
147 | ||
b20e47cb RM |
148 | /* |
149 | * round lowpc and highpc to multiples of the density we're using | |
150 | * so the rest of the scaling (here and in gprof) stays in ints. | |
151 | */ | |
152 | p->lowpc = ROUNDDOWN(lowpc, HISTFRACTION * sizeof(HISTCOUNTER)); | |
153 | p->highpc = ROUNDUP(highpc, HISTFRACTION * sizeof(HISTCOUNTER)); | |
154 | p->textsize = p->highpc - p->lowpc; | |
801af9fa ЛЮLY |
155 | /* This looks like a typo, but it's here to align the p->froms |
156 | section. */ | |
69ac9d07 | 157 | p->kcountsize = ROUNDUP(p->textsize / HISTFRACTION, sizeof(*p->froms)); |
b20e47cb RM |
158 | p->hashfraction = HASHFRACTION; |
159 | p->log_hashfraction = -1; | |
9a0a462c UD |
160 | /* The following test must be kept in sync with the corresponding |
161 | test in mcount.c. */ | |
b20e47cb RM |
162 | if ((HASHFRACTION & (HASHFRACTION - 1)) == 0) { |
163 | /* if HASHFRACTION is a power of two, mcount can use shifting | |
164 | instead of integer division. Precompute shift amount. */ | |
165 | p->log_hashfraction = ffs(p->hashfraction * sizeof(*p->froms)) - 1; | |
166 | } | |
801af9fa | 167 | p->fromssize = ROUNDUP(p->textsize / HASHFRACTION, sizeof(*p->froms)); |
b20e47cb | 168 | p->tolimit = p->textsize * ARCDENSITY / 100; |
31be941e SK |
169 | if (p->tolimit < minarcs) |
170 | p->tolimit = minarcs; | |
171 | else if (p->tolimit > maxarcs) | |
172 | p->tolimit = maxarcs; | |
b20e47cb | 173 | p->tossize = p->tolimit * sizeof(struct tostruct); |
11c981a9 | 174 | |
0413b54c | 175 | cp = calloc (p->kcountsize + p->fromssize + p->tossize, 1); |
b20e47cb RM |
176 | if (! cp) |
177 | { | |
14e9dd67 UD |
178 | ERR("monstartup: out of memory\n"); |
179 | p->tos = NULL; | |
180 | p->state = GMON_PROF_ERROR; | |
b20e47cb RM |
181 | return; |
182 | } | |
b20e47cb RM |
183 | p->tos = (struct tostruct *)cp; |
184 | cp += p->tossize; | |
be5b0fbc | 185 | p->kcount = (HISTCOUNTER *)cp; |
b20e47cb | 186 | cp += p->kcountsize; |
be5b0fbc | 187 | p->froms = (ARCINDEX *)cp; |
11c981a9 | 188 | |
b20e47cb RM |
189 | p->tos[0].link = 0; |
190 | ||
191 | o = p->highpc - p->lowpc; | |
d68171ed | 192 | if (p->kcountsize < (u_long) o) |
b20e47cb | 193 | { |
11c981a9 | 194 | #ifndef hp300 |
b20e47cb RM |
195 | s_scale = ((float)p->kcountsize / o ) * SCALE_1_TO_1; |
196 | #else | |
197 | /* avoid floating point operations */ | |
198 | int quot = o / p->kcountsize; | |
199 | ||
200 | if (quot >= 0x10000) | |
201 | s_scale = 1; | |
202 | else if (quot >= 0x100) | |
203 | s_scale = 0x10000 / quot; | |
204 | else if (o >= 0x800000) | |
205 | s_scale = 0x1000000 / (o / (p->kcountsize >> 8)); | |
206 | else | |
207 | s_scale = 0x1000000 / ((o << 8) / p->kcountsize); | |
11c981a9 | 208 | #endif |
b20e47cb RM |
209 | } else |
210 | s_scale = SCALE_1_TO_1; | |
11c981a9 | 211 | |
3996f34b | 212 | __moncontrol(1); |
11c981a9 | 213 | } |
1ab18a5b | 214 | weak_alias (__monstartup, monstartup) |
11c981a9 | 215 | |
b20e47cb RM |
216 | |
217 | static void | |
d165ca64 | 218 | write_hist (int fd, u_long load_address) |
11c981a9 | 219 | { |
5ae9d168 | 220 | u_char tag = GMON_TAG_TIME_HIST; |
11c981a9 | 221 | |
b20e47cb RM |
222 | if (_gmonparam.kcountsize > 0) |
223 | { | |
f521be31 UD |
224 | struct real_gmon_hist_hdr |
225 | { | |
226 | char *low_pc; | |
227 | char *high_pc; | |
228 | int32_t hist_size; | |
229 | int32_t prof_rate; | |
230 | char dimen[15]; | |
231 | char dimen_abbrev; | |
232 | } thdr; | |
5ae9d168 | 233 | struct iovec iov[3] = |
3ce1f295 | 234 | { |
5ae9d168 UD |
235 | { &tag, sizeof (tag) }, |
236 | { &thdr, sizeof (struct gmon_hist_hdr) }, | |
237 | { _gmonparam.kcount, _gmonparam.kcountsize } | |
238 | }; | |
239 | ||
f521be31 UD |
240 | if (sizeof (thdr) != sizeof (struct gmon_hist_hdr) |
241 | || (offsetof (struct real_gmon_hist_hdr, low_pc) | |
242 | != offsetof (struct gmon_hist_hdr, low_pc)) | |
243 | || (offsetof (struct real_gmon_hist_hdr, high_pc) | |
244 | != offsetof (struct gmon_hist_hdr, high_pc)) | |
245 | || (offsetof (struct real_gmon_hist_hdr, hist_size) | |
246 | != offsetof (struct gmon_hist_hdr, hist_size)) | |
247 | || (offsetof (struct real_gmon_hist_hdr, prof_rate) | |
248 | != offsetof (struct gmon_hist_hdr, prof_rate)) | |
249 | || (offsetof (struct real_gmon_hist_hdr, dimen) | |
250 | != offsetof (struct gmon_hist_hdr, dimen)) | |
251 | || (offsetof (struct real_gmon_hist_hdr, dimen_abbrev) | |
252 | != offsetof (struct gmon_hist_hdr, dimen_abbrev))) | |
253 | abort (); | |
254 | ||
d165ca64 L |
255 | thdr.low_pc = (char *) _gmonparam.lowpc - load_address; |
256 | thdr.high_pc = (char *) _gmonparam.highpc - load_address; | |
f521be31 UD |
257 | thdr.hist_size = _gmonparam.kcountsize / sizeof (HISTCOUNTER); |
258 | thdr.prof_rate = __profile_frequency (); | |
5ae9d168 | 259 | strncpy (thdr.dimen, "seconds", sizeof (thdr.dimen)); |
b20e47cb | 260 | thdr.dimen_abbrev = 's'; |
11c981a9 | 261 | |
19926de9 | 262 | __writev_nocancel_nostatus (fd, iov, 3); |
b20e47cb | 263 | } |
11c981a9 RM |
264 | } |
265 | ||
b20e47cb RM |
266 | |
267 | static void | |
d165ca64 | 268 | write_call_graph (int fd, u_long load_address) |
11c981a9 | 269 | { |
e7fd8a39 | 270 | #define NARCS_PER_WRITEV 32 |
5ae9d168 | 271 | u_char tag = GMON_TAG_CG_ARC; |
e7fd8a39 | 272 | struct gmon_cg_arc_record raw_arc[NARCS_PER_WRITEV] |
5ae9d168 | 273 | __attribute__ ((aligned (__alignof__ (char*)))); |
be5b0fbc | 274 | ARCINDEX from_index, to_index; |
eb64f8cb | 275 | u_long from_len; |
b20e47cb | 276 | u_long frompc; |
e7fd8a39 UD |
277 | struct iovec iov[2 * NARCS_PER_WRITEV]; |
278 | int nfilled; | |
b20e47cb | 279 | |
e7fd8a39 | 280 | for (nfilled = 0; nfilled < NARCS_PER_WRITEV; ++nfilled) |
5ae9d168 | 281 | { |
e7fd8a39 UD |
282 | iov[2 * nfilled].iov_base = &tag; |
283 | iov[2 * nfilled].iov_len = sizeof (tag); | |
5ae9d168 | 284 | |
e7fd8a39 UD |
285 | iov[2 * nfilled + 1].iov_base = &raw_arc[nfilled]; |
286 | iov[2 * nfilled + 1].iov_len = sizeof (struct gmon_cg_arc_record); | |
287 | } | |
288 | ||
289 | nfilled = 0; | |
5ae9d168 | 290 | from_len = _gmonparam.fromssize / sizeof (*_gmonparam.froms); |
b20e47cb RM |
291 | for (from_index = 0; from_index < from_len; ++from_index) |
292 | { | |
293 | if (_gmonparam.froms[from_index] == 0) | |
294 | continue; | |
295 | ||
296 | frompc = _gmonparam.lowpc; | |
297 | frompc += (from_index * _gmonparam.hashfraction | |
5ae9d168 | 298 | * sizeof (*_gmonparam.froms)); |
b20e47cb RM |
299 | for (to_index = _gmonparam.froms[from_index]; |
300 | to_index != 0; | |
301 | to_index = _gmonparam.tos[to_index].link) | |
302 | { | |
328c5f65 UD |
303 | struct arc |
304 | { | |
305 | char *frompc; | |
306 | char *selfpc; | |
307 | int32_t count; | |
308 | } | |
309 | arc; | |
310 | ||
d165ca64 L |
311 | arc.frompc = (char *) frompc - load_address; |
312 | arc.selfpc = ((char *) _gmonparam.tos[to_index].selfpc | |
313 | - load_address); | |
328c5f65 UD |
314 | arc.count = _gmonparam.tos[to_index].count; |
315 | memcpy (raw_arc + nfilled, &arc, sizeof (raw_arc [0])); | |
e7fd8a39 UD |
316 | |
317 | if (++nfilled == NARCS_PER_WRITEV) | |
3e5f5557 | 318 | { |
19926de9 | 319 | __writev_nocancel_nostatus (fd, iov, 2 * nfilled); |
3e5f5557 UD |
320 | nfilled = 0; |
321 | } | |
11c981a9 | 322 | } |
b20e47cb | 323 | } |
e7fd8a39 | 324 | if (nfilled > 0) |
19926de9 | 325 | __writev_nocancel_nostatus (fd, iov, 2 * nfilled); |
11c981a9 RM |
326 | } |
327 | ||
b20e47cb RM |
328 | |
329 | static void | |
9d46370c | 330 | write_bb_counts (int fd) |
11c981a9 | 331 | { |
b20e47cb | 332 | struct __bb *grp; |
5ae9d168 | 333 | u_char tag = GMON_TAG_BB_COUNT; |
3e5f5557 UD |
334 | size_t ncounts; |
335 | size_t i; | |
b20e47cb | 336 | |
5ae9d168 UD |
337 | struct iovec bbhead[2] = |
338 | { | |
339 | { &tag, sizeof (tag) }, | |
340 | { &ncounts, sizeof (ncounts) } | |
341 | }; | |
3e5f5557 UD |
342 | struct iovec bbbody[8]; |
343 | size_t nfilled; | |
5ae9d168 | 344 | |
3e5f5557 UD |
345 | for (i = 0; i < (sizeof (bbbody) / sizeof (bbbody[0])); i += 2) |
346 | { | |
347 | bbbody[i].iov_len = sizeof (grp->addresses[0]); | |
348 | bbbody[i + 1].iov_len = sizeof (grp->counts[0]); | |
349 | } | |
5ae9d168 | 350 | |
b20e47cb RM |
351 | /* Write each group of basic-block info (all basic-blocks in a |
352 | compilation unit form a single group). */ | |
353 | ||
354 | for (grp = __bb_head; grp; grp = grp->next) | |
355 | { | |
356 | ncounts = grp->ncounts; | |
19926de9 | 357 | __writev_nocancel_nostatus (fd, bbhead, 2); |
e7fd8a39 | 358 | for (nfilled = i = 0; i < ncounts; ++i) |
b20e47cb | 359 | { |
3e5f5557 UD |
360 | if (nfilled > (sizeof (bbbody) / sizeof (bbbody[0])) - 2) |
361 | { | |
19926de9 | 362 | __writev_nocancel_nostatus (fd, bbbody, nfilled); |
3e5f5557 UD |
363 | nfilled = 0; |
364 | } | |
365 | ||
366 | bbbody[nfilled++].iov_base = (char *) &grp->addresses[i]; | |
367 | bbbody[nfilled++].iov_base = &grp->counts[i]; | |
b20e47cb | 368 | } |
e7fd8a39 | 369 | if (nfilled > 0) |
19926de9 | 370 | __writev_nocancel_nostatus (fd, bbbody, nfilled); |
b20e47cb | 371 | } |
11c981a9 RM |
372 | } |
373 | ||
374 | ||
0413b54c UD |
375 | static void |
376 | write_gmon (void) | |
b20e47cb | 377 | { |
14c44e2e UD |
378 | int fd = -1; |
379 | char *env; | |
b20e47cb | 380 | |
14c44e2e UD |
381 | env = getenv ("GMON_OUT_PREFIX"); |
382 | if (env != NULL && !__libc_enable_secure) | |
b20e47cb | 383 | { |
14c44e2e UD |
384 | size_t len = strlen (env); |
385 | char buf[len + 20]; | |
4c5b09ed | 386 | __snprintf (buf, sizeof (buf), "%s.%u", env, __getpid ()); |
533deafb SB |
387 | fd = __open_nocancel (buf, O_CREAT | O_TRUNC | O_WRONLY | O_NOFOLLOW |
388 | | O_CLOEXEC, 0666); | |
14c44e2e UD |
389 | } |
390 | ||
391 | if (fd == -1) | |
392 | { | |
533deafb SB |
393 | fd = __open_nocancel ("gmon.out", O_CREAT | O_TRUNC | O_WRONLY |
394 | | O_NOFOLLOW | O_CLOEXEC, 0666); | |
14c44e2e UD |
395 | if (fd < 0) |
396 | { | |
397 | char buf[300]; | |
398 | int errnum = errno; | |
df6f8969 | 399 | __fxprintf (NULL, "_mcleanup: gmon.out: %s\n", |
df6f8969 | 400 | __strerror_r (errnum, buf, sizeof buf)); |
14c44e2e UD |
401 | return; |
402 | } | |
b20e47cb RM |
403 | } |
404 | ||
405 | /* write gmon.out header: */ | |
f521be31 UD |
406 | struct real_gmon_hdr |
407 | { | |
408 | char cookie[4]; | |
409 | int32_t version; | |
410 | char spare[3 * 4]; | |
411 | } ghdr; | |
412 | if (sizeof (ghdr) != sizeof (struct gmon_hdr) | |
413 | || (offsetof (struct real_gmon_hdr, cookie) | |
414 | != offsetof (struct gmon_hdr, cookie)) | |
415 | || (offsetof (struct real_gmon_hdr, version) | |
416 | != offsetof (struct gmon_hdr, version))) | |
417 | abort (); | |
5ae9d168 | 418 | memcpy (&ghdr.cookie[0], GMON_MAGIC, sizeof (ghdr.cookie)); |
f521be31 UD |
419 | ghdr.version = GMON_VERSION; |
420 | memset (ghdr.spare, '\0', sizeof (ghdr.spare)); | |
c647fb88 | 421 | __write_nocancel (fd, &ghdr, sizeof (struct gmon_hdr)); |
b20e47cb | 422 | |
d165ca64 L |
423 | /* Get load_address to profile PIE. */ |
424 | u_long load_address = 0; | |
425 | #ifdef PIC | |
426 | __dl_iterate_phdr (callback, &load_address); | |
427 | #endif | |
428 | ||
b20e47cb | 429 | /* write PC histogram: */ |
d165ca64 | 430 | write_hist (fd, load_address); |
b20e47cb RM |
431 | |
432 | /* write call-graph: */ | |
d165ca64 | 433 | write_call_graph (fd, load_address); |
b20e47cb RM |
434 | |
435 | /* write basic-block execution counts: */ | |
5ae9d168 | 436 | write_bb_counts (fd); |
b20e47cb | 437 | |
c181840c | 438 | __close_nocancel_nostatus (fd); |
0413b54c UD |
439 | } |
440 | ||
441 | ||
442 | void | |
443 | __write_profiling (void) | |
444 | { | |
445 | int save = _gmonparam.state; | |
446 | _gmonparam.state = GMON_PROF_OFF; | |
447 | if (save == GMON_PROF_ON) | |
448 | write_gmon (); | |
449 | _gmonparam.state = save; | |
450 | } | |
f5bf21a7 UD |
451 | #ifndef SHARED |
452 | /* This symbol isn't used anywhere in the DSO and it is not exported. | |
453 | This would normally mean it should be removed to get the same API | |
454 | in static libraries. But since profiling is special in static libs | |
455 | anyway we keep it. But not when building the DSO since some | |
456 | quality assurance tests will otherwise trigger. */ | |
0413b54c | 457 | weak_alias (__write_profiling, write_profiling) |
f5bf21a7 | 458 | #endif |
0413b54c UD |
459 | |
460 | ||
461 | void | |
462 | _mcleanup (void) | |
463 | { | |
14e9dd67 | 464 | __moncontrol (0); |
0413b54c | 465 | |
bde12187 | 466 | if (_gmonparam.state != GMON_PROF_ERROR && _gmonparam.tos != NULL) |
0413b54c UD |
467 | write_gmon (); |
468 | ||
14e9dd67 | 469 | /* free the memory. */ |
72e6cdfa | 470 | free (_gmonparam.tos); |
bde12187 SK |
471 | |
472 | /* reset buffer to initial state for safety */ | |
473 | memset(&_gmonparam, 0, sizeof _gmonparam); | |
474 | /* somewhat confusingly, ON=0, OFF=3 */ | |
475 | _gmonparam.state = GMON_PROF_OFF; | |
b20e47cb | 476 | } |