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Globals protection global() function modified for speed and correctness.
[redis.git] / deps / jemalloc / src / ctl.c
CommitLineData
a78e148b 1#define JEMALLOC_CTL_C_
2#include "jemalloc/internal/jemalloc_internal.h"
3
4/******************************************************************************/
5/* Data. */
6
7/*
8 * ctl_mtx protects the following:
9 * - ctl_stats.*
10 * - opt_prof_active
11 * - swap_enabled
12 * - swap_prezeroed
13 */
14static malloc_mutex_t ctl_mtx;
15static bool ctl_initialized;
16static uint64_t ctl_epoch;
17static ctl_stats_t ctl_stats;
18
19/******************************************************************************/
20/* Function prototypes for non-inline static functions. */
21
22#define CTL_PROTO(n) \
23static int n##_ctl(const size_t *mib, size_t miblen, void *oldp, \
24 size_t *oldlenp, void *newp, size_t newlen);
25
26#define INDEX_PROTO(n) \
27const ctl_node_t *n##_index(const size_t *mib, size_t miblen, \
28 size_t i);
29
30#ifdef JEMALLOC_STATS
31static bool ctl_arena_init(ctl_arena_stats_t *astats);
32#endif
33static void ctl_arena_clear(ctl_arena_stats_t *astats);
34#ifdef JEMALLOC_STATS
35static void ctl_arena_stats_amerge(ctl_arena_stats_t *cstats,
36 arena_t *arena);
37static void ctl_arena_stats_smerge(ctl_arena_stats_t *sstats,
38 ctl_arena_stats_t *astats);
39#endif
40static void ctl_arena_refresh(arena_t *arena, unsigned i);
41static void ctl_refresh(void);
42static bool ctl_init(void);
43static int ctl_lookup(const char *name, ctl_node_t const **nodesp,
44 size_t *mibp, size_t *depthp);
45
46CTL_PROTO(version)
47CTL_PROTO(epoch)
48#ifdef JEMALLOC_TCACHE
49CTL_PROTO(tcache_flush)
50#endif
51CTL_PROTO(thread_arena)
52#ifdef JEMALLOC_STATS
53CTL_PROTO(thread_allocated)
54CTL_PROTO(thread_allocatedp)
55CTL_PROTO(thread_deallocated)
56CTL_PROTO(thread_deallocatedp)
57#endif
58CTL_PROTO(config_debug)
59CTL_PROTO(config_dss)
60CTL_PROTO(config_dynamic_page_shift)
61CTL_PROTO(config_fill)
62CTL_PROTO(config_lazy_lock)
63CTL_PROTO(config_prof)
64CTL_PROTO(config_prof_libgcc)
65CTL_PROTO(config_prof_libunwind)
66CTL_PROTO(config_stats)
67CTL_PROTO(config_swap)
68CTL_PROTO(config_sysv)
69CTL_PROTO(config_tcache)
70CTL_PROTO(config_tiny)
71CTL_PROTO(config_tls)
72CTL_PROTO(config_xmalloc)
73CTL_PROTO(opt_abort)
74CTL_PROTO(opt_lg_qspace_max)
75CTL_PROTO(opt_lg_cspace_max)
76CTL_PROTO(opt_lg_chunk)
77CTL_PROTO(opt_narenas)
78CTL_PROTO(opt_lg_dirty_mult)
79CTL_PROTO(opt_stats_print)
80#ifdef JEMALLOC_FILL
81CTL_PROTO(opt_junk)
82CTL_PROTO(opt_zero)
83#endif
84#ifdef JEMALLOC_SYSV
85CTL_PROTO(opt_sysv)
86#endif
87#ifdef JEMALLOC_XMALLOC
88CTL_PROTO(opt_xmalloc)
89#endif
90#ifdef JEMALLOC_TCACHE
91CTL_PROTO(opt_tcache)
92CTL_PROTO(opt_lg_tcache_gc_sweep)
93#endif
94#ifdef JEMALLOC_PROF
95CTL_PROTO(opt_prof)
96CTL_PROTO(opt_prof_prefix)
97CTL_PROTO(opt_prof_active)
98CTL_PROTO(opt_lg_prof_bt_max)
99CTL_PROTO(opt_lg_prof_sample)
100CTL_PROTO(opt_lg_prof_interval)
101CTL_PROTO(opt_prof_gdump)
102CTL_PROTO(opt_prof_leak)
103CTL_PROTO(opt_prof_accum)
104CTL_PROTO(opt_lg_prof_tcmax)
105#endif
106#ifdef JEMALLOC_SWAP
107CTL_PROTO(opt_overcommit)
108#endif
109CTL_PROTO(arenas_bin_i_size)
110CTL_PROTO(arenas_bin_i_nregs)
111CTL_PROTO(arenas_bin_i_run_size)
112INDEX_PROTO(arenas_bin_i)
113CTL_PROTO(arenas_lrun_i_size)
114INDEX_PROTO(arenas_lrun_i)
115CTL_PROTO(arenas_narenas)
116CTL_PROTO(arenas_initialized)
117CTL_PROTO(arenas_quantum)
118CTL_PROTO(arenas_cacheline)
119CTL_PROTO(arenas_subpage)
120CTL_PROTO(arenas_pagesize)
121CTL_PROTO(arenas_chunksize)
122#ifdef JEMALLOC_TINY
123CTL_PROTO(arenas_tspace_min)
124CTL_PROTO(arenas_tspace_max)
125#endif
126CTL_PROTO(arenas_qspace_min)
127CTL_PROTO(arenas_qspace_max)
128CTL_PROTO(arenas_cspace_min)
129CTL_PROTO(arenas_cspace_max)
130CTL_PROTO(arenas_sspace_min)
131CTL_PROTO(arenas_sspace_max)
132#ifdef JEMALLOC_TCACHE
133CTL_PROTO(arenas_tcache_max)
134#endif
135CTL_PROTO(arenas_ntbins)
136CTL_PROTO(arenas_nqbins)
137CTL_PROTO(arenas_ncbins)
138CTL_PROTO(arenas_nsbins)
139CTL_PROTO(arenas_nbins)
140#ifdef JEMALLOC_TCACHE
141CTL_PROTO(arenas_nhbins)
142#endif
143CTL_PROTO(arenas_nlruns)
144CTL_PROTO(arenas_purge)
145#ifdef JEMALLOC_PROF
146CTL_PROTO(prof_active)
147CTL_PROTO(prof_dump)
148CTL_PROTO(prof_interval)
149#endif
150#ifdef JEMALLOC_STATS
151CTL_PROTO(stats_chunks_current)
152CTL_PROTO(stats_chunks_total)
153CTL_PROTO(stats_chunks_high)
154CTL_PROTO(stats_huge_allocated)
155CTL_PROTO(stats_huge_nmalloc)
156CTL_PROTO(stats_huge_ndalloc)
157CTL_PROTO(stats_arenas_i_small_allocated)
158CTL_PROTO(stats_arenas_i_small_nmalloc)
159CTL_PROTO(stats_arenas_i_small_ndalloc)
160CTL_PROTO(stats_arenas_i_small_nrequests)
161CTL_PROTO(stats_arenas_i_large_allocated)
162CTL_PROTO(stats_arenas_i_large_nmalloc)
163CTL_PROTO(stats_arenas_i_large_ndalloc)
164CTL_PROTO(stats_arenas_i_large_nrequests)
165CTL_PROTO(stats_arenas_i_bins_j_allocated)
166CTL_PROTO(stats_arenas_i_bins_j_nmalloc)
167CTL_PROTO(stats_arenas_i_bins_j_ndalloc)
168CTL_PROTO(stats_arenas_i_bins_j_nrequests)
169#ifdef JEMALLOC_TCACHE
170CTL_PROTO(stats_arenas_i_bins_j_nfills)
171CTL_PROTO(stats_arenas_i_bins_j_nflushes)
172#endif
173CTL_PROTO(stats_arenas_i_bins_j_nruns)
174CTL_PROTO(stats_arenas_i_bins_j_nreruns)
175CTL_PROTO(stats_arenas_i_bins_j_highruns)
176CTL_PROTO(stats_arenas_i_bins_j_curruns)
177INDEX_PROTO(stats_arenas_i_bins_j)
178CTL_PROTO(stats_arenas_i_lruns_j_nmalloc)
179CTL_PROTO(stats_arenas_i_lruns_j_ndalloc)
180CTL_PROTO(stats_arenas_i_lruns_j_nrequests)
181CTL_PROTO(stats_arenas_i_lruns_j_highruns)
182CTL_PROTO(stats_arenas_i_lruns_j_curruns)
183INDEX_PROTO(stats_arenas_i_lruns_j)
184#endif
185CTL_PROTO(stats_arenas_i_nthreads)
186CTL_PROTO(stats_arenas_i_pactive)
187CTL_PROTO(stats_arenas_i_pdirty)
188#ifdef JEMALLOC_STATS
189CTL_PROTO(stats_arenas_i_mapped)
190CTL_PROTO(stats_arenas_i_npurge)
191CTL_PROTO(stats_arenas_i_nmadvise)
192CTL_PROTO(stats_arenas_i_purged)
193#endif
194INDEX_PROTO(stats_arenas_i)
195#ifdef JEMALLOC_STATS
196CTL_PROTO(stats_cactive)
197CTL_PROTO(stats_allocated)
198CTL_PROTO(stats_active)
199CTL_PROTO(stats_mapped)
200#endif
201#ifdef JEMALLOC_SWAP
202# ifdef JEMALLOC_STATS
203CTL_PROTO(swap_avail)
204# endif
205CTL_PROTO(swap_prezeroed)
206CTL_PROTO(swap_nfds)
207CTL_PROTO(swap_fds)
208#endif
209
210/******************************************************************************/
211/* mallctl tree. */
212
213/* Maximum tree depth. */
214#define CTL_MAX_DEPTH 6
215
216#define NAME(n) true, {.named = {n
217#define CHILD(c) sizeof(c##_node) / sizeof(ctl_node_t), c##_node}}, NULL
218#define CTL(c) 0, NULL}}, c##_ctl
219
220/*
221 * Only handles internal indexed nodes, since there are currently no external
222 * ones.
223 */
224#define INDEX(i) false, {.indexed = {i##_index}}, NULL
225
226#ifdef JEMALLOC_TCACHE
227static const ctl_node_t tcache_node[] = {
228 {NAME("flush"), CTL(tcache_flush)}
229};
230#endif
231
232static const ctl_node_t thread_node[] = {
233 {NAME("arena"), CTL(thread_arena)}
234#ifdef JEMALLOC_STATS
235 ,
236 {NAME("allocated"), CTL(thread_allocated)},
237 {NAME("allocatedp"), CTL(thread_allocatedp)},
238 {NAME("deallocated"), CTL(thread_deallocated)},
239 {NAME("deallocatedp"), CTL(thread_deallocatedp)}
240#endif
241};
242
243static const ctl_node_t config_node[] = {
244 {NAME("debug"), CTL(config_debug)},
245 {NAME("dss"), CTL(config_dss)},
246 {NAME("dynamic_page_shift"), CTL(config_dynamic_page_shift)},
247 {NAME("fill"), CTL(config_fill)},
248 {NAME("lazy_lock"), CTL(config_lazy_lock)},
249 {NAME("prof"), CTL(config_prof)},
250 {NAME("prof_libgcc"), CTL(config_prof_libgcc)},
251 {NAME("prof_libunwind"), CTL(config_prof_libunwind)},
252 {NAME("stats"), CTL(config_stats)},
253 {NAME("swap"), CTL(config_swap)},
254 {NAME("sysv"), CTL(config_sysv)},
255 {NAME("tcache"), CTL(config_tcache)},
256 {NAME("tiny"), CTL(config_tiny)},
257 {NAME("tls"), CTL(config_tls)},
258 {NAME("xmalloc"), CTL(config_xmalloc)}
259};
260
261static const ctl_node_t opt_node[] = {
262 {NAME("abort"), CTL(opt_abort)},
263 {NAME("lg_qspace_max"), CTL(opt_lg_qspace_max)},
264 {NAME("lg_cspace_max"), CTL(opt_lg_cspace_max)},
265 {NAME("lg_chunk"), CTL(opt_lg_chunk)},
266 {NAME("narenas"), CTL(opt_narenas)},
267 {NAME("lg_dirty_mult"), CTL(opt_lg_dirty_mult)},
268 {NAME("stats_print"), CTL(opt_stats_print)}
269#ifdef JEMALLOC_FILL
270 ,
271 {NAME("junk"), CTL(opt_junk)},
272 {NAME("zero"), CTL(opt_zero)}
273#endif
274#ifdef JEMALLOC_SYSV
275 ,
276 {NAME("sysv"), CTL(opt_sysv)}
277#endif
278#ifdef JEMALLOC_XMALLOC
279 ,
280 {NAME("xmalloc"), CTL(opt_xmalloc)}
281#endif
282#ifdef JEMALLOC_TCACHE
283 ,
284 {NAME("tcache"), CTL(opt_tcache)},
285 {NAME("lg_tcache_gc_sweep"), CTL(opt_lg_tcache_gc_sweep)}
286#endif
287#ifdef JEMALLOC_PROF
288 ,
289 {NAME("prof"), CTL(opt_prof)},
290 {NAME("prof_prefix"), CTL(opt_prof_prefix)},
291 {NAME("prof_active"), CTL(opt_prof_active)},
292 {NAME("lg_prof_bt_max"), CTL(opt_lg_prof_bt_max)},
293 {NAME("lg_prof_sample"), CTL(opt_lg_prof_sample)},
294 {NAME("lg_prof_interval"), CTL(opt_lg_prof_interval)},
295 {NAME("prof_gdump"), CTL(opt_prof_gdump)},
296 {NAME("prof_leak"), CTL(opt_prof_leak)},
297 {NAME("prof_accum"), CTL(opt_prof_accum)},
298 {NAME("lg_prof_tcmax"), CTL(opt_lg_prof_tcmax)}
299#endif
300#ifdef JEMALLOC_SWAP
301 ,
302 {NAME("overcommit"), CTL(opt_overcommit)}
303#endif
304};
305
306static const ctl_node_t arenas_bin_i_node[] = {
307 {NAME("size"), CTL(arenas_bin_i_size)},
308 {NAME("nregs"), CTL(arenas_bin_i_nregs)},
309 {NAME("run_size"), CTL(arenas_bin_i_run_size)}
310};
311static const ctl_node_t super_arenas_bin_i_node[] = {
312 {NAME(""), CHILD(arenas_bin_i)}
313};
314
315static const ctl_node_t arenas_bin_node[] = {
316 {INDEX(arenas_bin_i)}
317};
318
319static const ctl_node_t arenas_lrun_i_node[] = {
320 {NAME("size"), CTL(arenas_lrun_i_size)}
321};
322static const ctl_node_t super_arenas_lrun_i_node[] = {
323 {NAME(""), CHILD(arenas_lrun_i)}
324};
325
326static const ctl_node_t arenas_lrun_node[] = {
327 {INDEX(arenas_lrun_i)}
328};
329
330static const ctl_node_t arenas_node[] = {
331 {NAME("narenas"), CTL(arenas_narenas)},
332 {NAME("initialized"), CTL(arenas_initialized)},
333 {NAME("quantum"), CTL(arenas_quantum)},
334 {NAME("cacheline"), CTL(arenas_cacheline)},
335 {NAME("subpage"), CTL(arenas_subpage)},
336 {NAME("pagesize"), CTL(arenas_pagesize)},
337 {NAME("chunksize"), CTL(arenas_chunksize)},
338#ifdef JEMALLOC_TINY
339 {NAME("tspace_min"), CTL(arenas_tspace_min)},
340 {NAME("tspace_max"), CTL(arenas_tspace_max)},
341#endif
342 {NAME("qspace_min"), CTL(arenas_qspace_min)},
343 {NAME("qspace_max"), CTL(arenas_qspace_max)},
344 {NAME("cspace_min"), CTL(arenas_cspace_min)},
345 {NAME("cspace_max"), CTL(arenas_cspace_max)},
346 {NAME("sspace_min"), CTL(arenas_sspace_min)},
347 {NAME("sspace_max"), CTL(arenas_sspace_max)},
348#ifdef JEMALLOC_TCACHE
349 {NAME("tcache_max"), CTL(arenas_tcache_max)},
350#endif
351 {NAME("ntbins"), CTL(arenas_ntbins)},
352 {NAME("nqbins"), CTL(arenas_nqbins)},
353 {NAME("ncbins"), CTL(arenas_ncbins)},
354 {NAME("nsbins"), CTL(arenas_nsbins)},
355 {NAME("nbins"), CTL(arenas_nbins)},
356#ifdef JEMALLOC_TCACHE
357 {NAME("nhbins"), CTL(arenas_nhbins)},
358#endif
359 {NAME("bin"), CHILD(arenas_bin)},
360 {NAME("nlruns"), CTL(arenas_nlruns)},
361 {NAME("lrun"), CHILD(arenas_lrun)},
362 {NAME("purge"), CTL(arenas_purge)}
363};
364
365#ifdef JEMALLOC_PROF
366static const ctl_node_t prof_node[] = {
367 {NAME("active"), CTL(prof_active)},
368 {NAME("dump"), CTL(prof_dump)},
369 {NAME("interval"), CTL(prof_interval)}
370};
371#endif
372
373#ifdef JEMALLOC_STATS
374static const ctl_node_t stats_chunks_node[] = {
375 {NAME("current"), CTL(stats_chunks_current)},
376 {NAME("total"), CTL(stats_chunks_total)},
377 {NAME("high"), CTL(stats_chunks_high)}
378};
379
380static const ctl_node_t stats_huge_node[] = {
381 {NAME("allocated"), CTL(stats_huge_allocated)},
382 {NAME("nmalloc"), CTL(stats_huge_nmalloc)},
383 {NAME("ndalloc"), CTL(stats_huge_ndalloc)}
384};
385
386static const ctl_node_t stats_arenas_i_small_node[] = {
387 {NAME("allocated"), CTL(stats_arenas_i_small_allocated)},
388 {NAME("nmalloc"), CTL(stats_arenas_i_small_nmalloc)},
389 {NAME("ndalloc"), CTL(stats_arenas_i_small_ndalloc)},
390 {NAME("nrequests"), CTL(stats_arenas_i_small_nrequests)}
391};
392
393static const ctl_node_t stats_arenas_i_large_node[] = {
394 {NAME("allocated"), CTL(stats_arenas_i_large_allocated)},
395 {NAME("nmalloc"), CTL(stats_arenas_i_large_nmalloc)},
396 {NAME("ndalloc"), CTL(stats_arenas_i_large_ndalloc)},
397 {NAME("nrequests"), CTL(stats_arenas_i_large_nrequests)}
398};
399
400static const ctl_node_t stats_arenas_i_bins_j_node[] = {
401 {NAME("allocated"), CTL(stats_arenas_i_bins_j_allocated)},
402 {NAME("nmalloc"), CTL(stats_arenas_i_bins_j_nmalloc)},
403 {NAME("ndalloc"), CTL(stats_arenas_i_bins_j_ndalloc)},
404 {NAME("nrequests"), CTL(stats_arenas_i_bins_j_nrequests)},
405#ifdef JEMALLOC_TCACHE
406 {NAME("nfills"), CTL(stats_arenas_i_bins_j_nfills)},
407 {NAME("nflushes"), CTL(stats_arenas_i_bins_j_nflushes)},
408#endif
409 {NAME("nruns"), CTL(stats_arenas_i_bins_j_nruns)},
410 {NAME("nreruns"), CTL(stats_arenas_i_bins_j_nreruns)},
411 {NAME("highruns"), CTL(stats_arenas_i_bins_j_highruns)},
412 {NAME("curruns"), CTL(stats_arenas_i_bins_j_curruns)}
413};
414static const ctl_node_t super_stats_arenas_i_bins_j_node[] = {
415 {NAME(""), CHILD(stats_arenas_i_bins_j)}
416};
417
418static const ctl_node_t stats_arenas_i_bins_node[] = {
419 {INDEX(stats_arenas_i_bins_j)}
420};
421
422static const ctl_node_t stats_arenas_i_lruns_j_node[] = {
423 {NAME("nmalloc"), CTL(stats_arenas_i_lruns_j_nmalloc)},
424 {NAME("ndalloc"), CTL(stats_arenas_i_lruns_j_ndalloc)},
425 {NAME("nrequests"), CTL(stats_arenas_i_lruns_j_nrequests)},
426 {NAME("highruns"), CTL(stats_arenas_i_lruns_j_highruns)},
427 {NAME("curruns"), CTL(stats_arenas_i_lruns_j_curruns)}
428};
429static const ctl_node_t super_stats_arenas_i_lruns_j_node[] = {
430 {NAME(""), CHILD(stats_arenas_i_lruns_j)}
431};
432
433static const ctl_node_t stats_arenas_i_lruns_node[] = {
434 {INDEX(stats_arenas_i_lruns_j)}
435};
436#endif
437
438static const ctl_node_t stats_arenas_i_node[] = {
439 {NAME("nthreads"), CTL(stats_arenas_i_nthreads)},
440 {NAME("pactive"), CTL(stats_arenas_i_pactive)},
441 {NAME("pdirty"), CTL(stats_arenas_i_pdirty)}
442#ifdef JEMALLOC_STATS
443 ,
444 {NAME("mapped"), CTL(stats_arenas_i_mapped)},
445 {NAME("npurge"), CTL(stats_arenas_i_npurge)},
446 {NAME("nmadvise"), CTL(stats_arenas_i_nmadvise)},
447 {NAME("purged"), CTL(stats_arenas_i_purged)},
448 {NAME("small"), CHILD(stats_arenas_i_small)},
449 {NAME("large"), CHILD(stats_arenas_i_large)},
450 {NAME("bins"), CHILD(stats_arenas_i_bins)},
451 {NAME("lruns"), CHILD(stats_arenas_i_lruns)}
452#endif
453};
454static const ctl_node_t super_stats_arenas_i_node[] = {
455 {NAME(""), CHILD(stats_arenas_i)}
456};
457
458static const ctl_node_t stats_arenas_node[] = {
459 {INDEX(stats_arenas_i)}
460};
461
462static const ctl_node_t stats_node[] = {
463#ifdef JEMALLOC_STATS
464 {NAME("cactive"), CTL(stats_cactive)},
465 {NAME("allocated"), CTL(stats_allocated)},
466 {NAME("active"), CTL(stats_active)},
467 {NAME("mapped"), CTL(stats_mapped)},
468 {NAME("chunks"), CHILD(stats_chunks)},
469 {NAME("huge"), CHILD(stats_huge)},
470#endif
471 {NAME("arenas"), CHILD(stats_arenas)}
472};
473
474#ifdef JEMALLOC_SWAP
475static const ctl_node_t swap_node[] = {
476# ifdef JEMALLOC_STATS
477 {NAME("avail"), CTL(swap_avail)},
478# endif
479 {NAME("prezeroed"), CTL(swap_prezeroed)},
480 {NAME("nfds"), CTL(swap_nfds)},
481 {NAME("fds"), CTL(swap_fds)}
482};
483#endif
484
485static const ctl_node_t root_node[] = {
486 {NAME("version"), CTL(version)},
487 {NAME("epoch"), CTL(epoch)},
488#ifdef JEMALLOC_TCACHE
489 {NAME("tcache"), CHILD(tcache)},
490#endif
491 {NAME("thread"), CHILD(thread)},
492 {NAME("config"), CHILD(config)},
493 {NAME("opt"), CHILD(opt)},
494 {NAME("arenas"), CHILD(arenas)},
495#ifdef JEMALLOC_PROF
496 {NAME("prof"), CHILD(prof)},
497#endif
498 {NAME("stats"), CHILD(stats)}
499#ifdef JEMALLOC_SWAP
500 ,
501 {NAME("swap"), CHILD(swap)}
502#endif
503};
504static const ctl_node_t super_root_node[] = {
505 {NAME(""), CHILD(root)}
506};
507
508#undef NAME
509#undef CHILD
510#undef CTL
511#undef INDEX
512
513/******************************************************************************/
514
515#ifdef JEMALLOC_STATS
516static bool
517ctl_arena_init(ctl_arena_stats_t *astats)
518{
519
520 if (astats->bstats == NULL) {
521 astats->bstats = (malloc_bin_stats_t *)base_alloc(nbins *
522 sizeof(malloc_bin_stats_t));
523 if (astats->bstats == NULL)
524 return (true);
525 }
526 if (astats->lstats == NULL) {
527 astats->lstats = (malloc_large_stats_t *)base_alloc(nlclasses *
528 sizeof(malloc_large_stats_t));
529 if (astats->lstats == NULL)
530 return (true);
531 }
532
533 return (false);
534}
535#endif
536
537static void
538ctl_arena_clear(ctl_arena_stats_t *astats)
539{
540
541 astats->pactive = 0;
542 astats->pdirty = 0;
543#ifdef JEMALLOC_STATS
544 memset(&astats->astats, 0, sizeof(arena_stats_t));
545 astats->allocated_small = 0;
546 astats->nmalloc_small = 0;
547 astats->ndalloc_small = 0;
548 astats->nrequests_small = 0;
549 memset(astats->bstats, 0, nbins * sizeof(malloc_bin_stats_t));
550 memset(astats->lstats, 0, nlclasses * sizeof(malloc_large_stats_t));
551#endif
552}
553
554#ifdef JEMALLOC_STATS
555static void
556ctl_arena_stats_amerge(ctl_arena_stats_t *cstats, arena_t *arena)
557{
558 unsigned i;
559
560 arena_stats_merge(arena, &cstats->pactive, &cstats->pdirty,
561 &cstats->astats, cstats->bstats, cstats->lstats);
562
563 for (i = 0; i < nbins; i++) {
564 cstats->allocated_small += cstats->bstats[i].allocated;
565 cstats->nmalloc_small += cstats->bstats[i].nmalloc;
566 cstats->ndalloc_small += cstats->bstats[i].ndalloc;
567 cstats->nrequests_small += cstats->bstats[i].nrequests;
568 }
569}
570
571static void
572ctl_arena_stats_smerge(ctl_arena_stats_t *sstats, ctl_arena_stats_t *astats)
573{
574 unsigned i;
575
576 sstats->pactive += astats->pactive;
577 sstats->pdirty += astats->pdirty;
578
579 sstats->astats.mapped += astats->astats.mapped;
580 sstats->astats.npurge += astats->astats.npurge;
581 sstats->astats.nmadvise += astats->astats.nmadvise;
582 sstats->astats.purged += astats->astats.purged;
583
584 sstats->allocated_small += astats->allocated_small;
585 sstats->nmalloc_small += astats->nmalloc_small;
586 sstats->ndalloc_small += astats->ndalloc_small;
587 sstats->nrequests_small += astats->nrequests_small;
588
589 sstats->astats.allocated_large += astats->astats.allocated_large;
590 sstats->astats.nmalloc_large += astats->astats.nmalloc_large;
591 sstats->astats.ndalloc_large += astats->astats.ndalloc_large;
592 sstats->astats.nrequests_large += astats->astats.nrequests_large;
593
594 for (i = 0; i < nlclasses; i++) {
595 sstats->lstats[i].nmalloc += astats->lstats[i].nmalloc;
596 sstats->lstats[i].ndalloc += astats->lstats[i].ndalloc;
597 sstats->lstats[i].nrequests += astats->lstats[i].nrequests;
598 sstats->lstats[i].highruns += astats->lstats[i].highruns;
599 sstats->lstats[i].curruns += astats->lstats[i].curruns;
600 }
601
602 for (i = 0; i < nbins; i++) {
603 sstats->bstats[i].allocated += astats->bstats[i].allocated;
604 sstats->bstats[i].nmalloc += astats->bstats[i].nmalloc;
605 sstats->bstats[i].ndalloc += astats->bstats[i].ndalloc;
606 sstats->bstats[i].nrequests += astats->bstats[i].nrequests;
607#ifdef JEMALLOC_TCACHE
608 sstats->bstats[i].nfills += astats->bstats[i].nfills;
609 sstats->bstats[i].nflushes += astats->bstats[i].nflushes;
610#endif
611 sstats->bstats[i].nruns += astats->bstats[i].nruns;
612 sstats->bstats[i].reruns += astats->bstats[i].reruns;
613 sstats->bstats[i].highruns += astats->bstats[i].highruns;
614 sstats->bstats[i].curruns += astats->bstats[i].curruns;
615 }
616}
617#endif
618
619static void
620ctl_arena_refresh(arena_t *arena, unsigned i)
621{
622 ctl_arena_stats_t *astats = &ctl_stats.arenas[i];
623 ctl_arena_stats_t *sstats = &ctl_stats.arenas[narenas];
624
625 ctl_arena_clear(astats);
626
627 sstats->nthreads += astats->nthreads;
628#ifdef JEMALLOC_STATS
629 ctl_arena_stats_amerge(astats, arena);
630 /* Merge into sum stats as well. */
631 ctl_arena_stats_smerge(sstats, astats);
632#else
633 astats->pactive += arena->nactive;
634 astats->pdirty += arena->ndirty;
635 /* Merge into sum stats as well. */
636 sstats->pactive += arena->nactive;
637 sstats->pdirty += arena->ndirty;
638#endif
639}
640
641static void
642ctl_refresh(void)
643{
644 unsigned i;
645 arena_t *tarenas[narenas];
646
647#ifdef JEMALLOC_STATS
648 malloc_mutex_lock(&chunks_mtx);
649 ctl_stats.chunks.current = stats_chunks.curchunks;
650 ctl_stats.chunks.total = stats_chunks.nchunks;
651 ctl_stats.chunks.high = stats_chunks.highchunks;
652 malloc_mutex_unlock(&chunks_mtx);
653
654 malloc_mutex_lock(&huge_mtx);
655 ctl_stats.huge.allocated = huge_allocated;
656 ctl_stats.huge.nmalloc = huge_nmalloc;
657 ctl_stats.huge.ndalloc = huge_ndalloc;
658 malloc_mutex_unlock(&huge_mtx);
659#endif
660
661 /*
662 * Clear sum stats, since they will be merged into by
663 * ctl_arena_refresh().
664 */
665 ctl_stats.arenas[narenas].nthreads = 0;
666 ctl_arena_clear(&ctl_stats.arenas[narenas]);
667
668 malloc_mutex_lock(&arenas_lock);
669 memcpy(tarenas, arenas, sizeof(arena_t *) * narenas);
670 for (i = 0; i < narenas; i++) {
671 if (arenas[i] != NULL)
672 ctl_stats.arenas[i].nthreads = arenas[i]->nthreads;
673 else
674 ctl_stats.arenas[i].nthreads = 0;
675 }
676 malloc_mutex_unlock(&arenas_lock);
677 for (i = 0; i < narenas; i++) {
678 bool initialized = (tarenas[i] != NULL);
679
680 ctl_stats.arenas[i].initialized = initialized;
681 if (initialized)
682 ctl_arena_refresh(tarenas[i], i);
683 }
684
685#ifdef JEMALLOC_STATS
686 ctl_stats.allocated = ctl_stats.arenas[narenas].allocated_small
687 + ctl_stats.arenas[narenas].astats.allocated_large
688 + ctl_stats.huge.allocated;
689 ctl_stats.active = (ctl_stats.arenas[narenas].pactive << PAGE_SHIFT)
690 + ctl_stats.huge.allocated;
691 ctl_stats.mapped = (ctl_stats.chunks.current << opt_lg_chunk);
692
693# ifdef JEMALLOC_SWAP
694 malloc_mutex_lock(&swap_mtx);
695 ctl_stats.swap_avail = swap_avail;
696 malloc_mutex_unlock(&swap_mtx);
697# endif
698#endif
699
700 ctl_epoch++;
701}
702
703static bool
704ctl_init(void)
705{
706 bool ret;
707
708 malloc_mutex_lock(&ctl_mtx);
709 if (ctl_initialized == false) {
710#ifdef JEMALLOC_STATS
711 unsigned i;
712#endif
713
714 /*
715 * Allocate space for one extra arena stats element, which
716 * contains summed stats across all arenas.
717 */
718 ctl_stats.arenas = (ctl_arena_stats_t *)base_alloc(
719 (narenas + 1) * sizeof(ctl_arena_stats_t));
720 if (ctl_stats.arenas == NULL) {
721 ret = true;
722 goto RETURN;
723 }
724 memset(ctl_stats.arenas, 0, (narenas + 1) *
725 sizeof(ctl_arena_stats_t));
726
727 /*
728 * Initialize all stats structures, regardless of whether they
729 * ever get used. Lazy initialization would allow errors to
730 * cause inconsistent state to be viewable by the application.
731 */
732#ifdef JEMALLOC_STATS
733 for (i = 0; i <= narenas; i++) {
734 if (ctl_arena_init(&ctl_stats.arenas[i])) {
735 ret = true;
736 goto RETURN;
737 }
738 }
739#endif
740 ctl_stats.arenas[narenas].initialized = true;
741
742 ctl_epoch = 0;
743 ctl_refresh();
744 ctl_initialized = true;
745 }
746
747 ret = false;
748RETURN:
749 malloc_mutex_unlock(&ctl_mtx);
750 return (ret);
751}
752
753static int
754ctl_lookup(const char *name, ctl_node_t const **nodesp, size_t *mibp,
755 size_t *depthp)
756{
757 int ret;
758 const char *elm, *tdot, *dot;
759 size_t elen, i, j;
760 const ctl_node_t *node;
761
762 elm = name;
763 /* Equivalent to strchrnul(). */
764 dot = ((tdot = strchr(elm, '.')) != NULL) ? tdot : strchr(elm, '\0');
765 elen = (size_t)((uintptr_t)dot - (uintptr_t)elm);
766 if (elen == 0) {
767 ret = ENOENT;
768 goto RETURN;
769 }
770 node = super_root_node;
771 for (i = 0; i < *depthp; i++) {
772 assert(node->named);
773 assert(node->u.named.nchildren > 0);
774 if (node->u.named.children[0].named) {
775 const ctl_node_t *pnode = node;
776
777 /* Children are named. */
778 for (j = 0; j < node->u.named.nchildren; j++) {
779 const ctl_node_t *child =
780 &node->u.named.children[j];
781 if (strlen(child->u.named.name) == elen
782 && strncmp(elm, child->u.named.name,
783 elen) == 0) {
784 node = child;
785 if (nodesp != NULL)
786 nodesp[i] = node;
787 mibp[i] = j;
788 break;
789 }
790 }
791 if (node == pnode) {
792 ret = ENOENT;
793 goto RETURN;
794 }
795 } else {
796 unsigned long index;
797 const ctl_node_t *inode;
798
799 /* Children are indexed. */
800 index = strtoul(elm, NULL, 10);
801 if (index == ULONG_MAX) {
802 ret = ENOENT;
803 goto RETURN;
804 }
805
806 inode = &node->u.named.children[0];
807 node = inode->u.indexed.index(mibp, *depthp,
808 index);
809 if (node == NULL) {
810 ret = ENOENT;
811 goto RETURN;
812 }
813
814 if (nodesp != NULL)
815 nodesp[i] = node;
816 mibp[i] = (size_t)index;
817 }
818
819 if (node->ctl != NULL) {
820 /* Terminal node. */
821 if (*dot != '\0') {
822 /*
823 * The name contains more elements than are
824 * in this path through the tree.
825 */
826 ret = ENOENT;
827 goto RETURN;
828 }
829 /* Complete lookup successful. */
830 *depthp = i + 1;
831 break;
832 }
833
834 /* Update elm. */
835 if (*dot == '\0') {
836 /* No more elements. */
837 ret = ENOENT;
838 goto RETURN;
839 }
840 elm = &dot[1];
841 dot = ((tdot = strchr(elm, '.')) != NULL) ? tdot :
842 strchr(elm, '\0');
843 elen = (size_t)((uintptr_t)dot - (uintptr_t)elm);
844 }
845
846 ret = 0;
847RETURN:
848 return (ret);
849}
850
851int
852ctl_byname(const char *name, void *oldp, size_t *oldlenp, void *newp,
853 size_t newlen)
854{
855 int ret;
856 size_t depth;
857 ctl_node_t const *nodes[CTL_MAX_DEPTH];
858 size_t mib[CTL_MAX_DEPTH];
859
860 if (ctl_initialized == false && ctl_init()) {
861 ret = EAGAIN;
862 goto RETURN;
863 }
864
865 depth = CTL_MAX_DEPTH;
866 ret = ctl_lookup(name, nodes, mib, &depth);
867 if (ret != 0)
868 goto RETURN;
869
870 if (nodes[depth-1]->ctl == NULL) {
871 /* The name refers to a partial path through the ctl tree. */
872 ret = ENOENT;
873 goto RETURN;
874 }
875
876 ret = nodes[depth-1]->ctl(mib, depth, oldp, oldlenp, newp, newlen);
877RETURN:
878 return(ret);
879}
880
881int
882ctl_nametomib(const char *name, size_t *mibp, size_t *miblenp)
883{
884 int ret;
885
886 if (ctl_initialized == false && ctl_init()) {
887 ret = EAGAIN;
888 goto RETURN;
889 }
890
891 ret = ctl_lookup(name, NULL, mibp, miblenp);
892RETURN:
893 return(ret);
894}
895
896int
897ctl_bymib(const size_t *mib, size_t miblen, void *oldp, size_t *oldlenp,
898 void *newp, size_t newlen)
899{
900 int ret;
901 const ctl_node_t *node;
902 size_t i;
903
904 if (ctl_initialized == false && ctl_init()) {
905 ret = EAGAIN;
906 goto RETURN;
907 }
908
909 /* Iterate down the tree. */
910 node = super_root_node;
911 for (i = 0; i < miblen; i++) {
912 if (node->u.named.children[0].named) {
913 /* Children are named. */
914 if (node->u.named.nchildren <= mib[i]) {
915 ret = ENOENT;
916 goto RETURN;
917 }
918 node = &node->u.named.children[mib[i]];
919 } else {
920 const ctl_node_t *inode;
921
922 /* Indexed element. */
923 inode = &node->u.named.children[0];
924 node = inode->u.indexed.index(mib, miblen, mib[i]);
925 if (node == NULL) {
926 ret = ENOENT;
927 goto RETURN;
928 }
929 }
930 }
931
932 /* Call the ctl function. */
933 if (node->ctl == NULL) {
934 /* Partial MIB. */
935 ret = ENOENT;
936 goto RETURN;
937 }
938 ret = node->ctl(mib, miblen, oldp, oldlenp, newp, newlen);
939
940RETURN:
941 return(ret);
942}
943
944bool
945ctl_boot(void)
946{
947
948 if (malloc_mutex_init(&ctl_mtx))
949 return (true);
950
951 ctl_initialized = false;
952
953 return (false);
954}
955
956/******************************************************************************/
957/* *_ctl() functions. */
958
959#define READONLY() do { \
960 if (newp != NULL || newlen != 0) { \
961 ret = EPERM; \
962 goto RETURN; \
963 } \
964} while (0)
965
966#define WRITEONLY() do { \
967 if (oldp != NULL || oldlenp != NULL) { \
968 ret = EPERM; \
969 goto RETURN; \
970 } \
971} while (0)
972
973#define VOID() do { \
974 READONLY(); \
975 WRITEONLY(); \
976} while (0)
977
978#define READ(v, t) do { \
979 if (oldp != NULL && oldlenp != NULL) { \
980 if (*oldlenp != sizeof(t)) { \
981 size_t copylen = (sizeof(t) <= *oldlenp) \
982 ? sizeof(t) : *oldlenp; \
983 memcpy(oldp, (void *)&v, copylen); \
984 ret = EINVAL; \
985 goto RETURN; \
986 } else \
987 *(t *)oldp = v; \
988 } \
989} while (0)
990
991#define WRITE(v, t) do { \
992 if (newp != NULL) { \
993 if (newlen != sizeof(t)) { \
994 ret = EINVAL; \
995 goto RETURN; \
996 } \
997 v = *(t *)newp; \
998 } \
999} while (0)
1000
1001#define CTL_RO_GEN(n, v, t) \
1002static int \
1003n##_ctl(const size_t *mib, size_t miblen, void *oldp, size_t *oldlenp, \
1004 void *newp, size_t newlen) \
1005{ \
1006 int ret; \
1007 t oldval; \
1008 \
1009 malloc_mutex_lock(&ctl_mtx); \
1010 READONLY(); \
1011 oldval = v; \
1012 READ(oldval, t); \
1013 \
1014 ret = 0; \
1015RETURN: \
1016 malloc_mutex_unlock(&ctl_mtx); \
1017 return (ret); \
1018}
1019
1020/*
1021 * ctl_mtx is not acquired, under the assumption that no pertinent data will
1022 * mutate during the call.
1023 */
1024#define CTL_RO_NL_GEN(n, v, t) \
1025static int \
1026n##_ctl(const size_t *mib, size_t miblen, void *oldp, size_t *oldlenp, \
1027 void *newp, size_t newlen) \
1028{ \
1029 int ret; \
1030 t oldval; \
1031 \
1032 READONLY(); \
1033 oldval = v; \
1034 READ(oldval, t); \
1035 \
1036 ret = 0; \
1037RETURN: \
1038 return (ret); \
1039}
1040
1041#define CTL_RO_TRUE_GEN(n) \
1042static int \
1043n##_ctl(const size_t *mib, size_t miblen, void *oldp, size_t *oldlenp, \
1044 void *newp, size_t newlen) \
1045{ \
1046 int ret; \
1047 bool oldval; \
1048 \
1049 READONLY(); \
1050 oldval = true; \
1051 READ(oldval, bool); \
1052 \
1053 ret = 0; \
1054RETURN: \
1055 return (ret); \
1056}
1057
1058#define CTL_RO_FALSE_GEN(n) \
1059static int \
1060n##_ctl(const size_t *mib, size_t miblen, void *oldp, size_t *oldlenp, \
1061 void *newp, size_t newlen) \
1062{ \
1063 int ret; \
1064 bool oldval; \
1065 \
1066 READONLY(); \
1067 oldval = false; \
1068 READ(oldval, bool); \
1069 \
1070 ret = 0; \
1071RETURN: \
1072 return (ret); \
1073}
1074
1075CTL_RO_NL_GEN(version, JEMALLOC_VERSION, const char *)
1076
1077static int
1078epoch_ctl(const size_t *mib, size_t miblen, void *oldp, size_t *oldlenp,
1079 void *newp, size_t newlen)
1080{
1081 int ret;
1082 uint64_t newval;
1083
1084 malloc_mutex_lock(&ctl_mtx);
1085 newval = 0;
1086 WRITE(newval, uint64_t);
1087 if (newval != 0)
1088 ctl_refresh();
1089 READ(ctl_epoch, uint64_t);
1090
1091 ret = 0;
1092RETURN:
1093 malloc_mutex_unlock(&ctl_mtx);
1094 return (ret);
1095}
1096
1097#ifdef JEMALLOC_TCACHE
1098static int
1099tcache_flush_ctl(const size_t *mib, size_t miblen, void *oldp, size_t *oldlenp,
1100 void *newp, size_t newlen)
1101{
1102 int ret;
1103 tcache_t *tcache;
1104
1105 VOID();
1106
1107 tcache = TCACHE_GET();
1108 if (tcache == NULL) {
1109 ret = 0;
1110 goto RETURN;
1111 }
1112 tcache_destroy(tcache);
1113 TCACHE_SET(NULL);
1114
1115 ret = 0;
1116RETURN:
1117 return (ret);
1118}
1119#endif
1120
1121static int
1122thread_arena_ctl(const size_t *mib, size_t miblen, void *oldp, size_t *oldlenp,
1123 void *newp, size_t newlen)
1124{
1125 int ret;
1126 unsigned newind, oldind;
1127
1128 newind = oldind = choose_arena()->ind;
1129 WRITE(newind, unsigned);
1130 READ(oldind, unsigned);
1131 if (newind != oldind) {
1132 arena_t *arena;
1133
1134 if (newind >= narenas) {
1135 /* New arena index is out of range. */
1136 ret = EFAULT;
1137 goto RETURN;
1138 }
1139
1140 /* Initialize arena if necessary. */
1141 malloc_mutex_lock(&arenas_lock);
1142 if ((arena = arenas[newind]) == NULL)
1143 arena = arenas_extend(newind);
1144 arenas[oldind]->nthreads--;
1145 arenas[newind]->nthreads++;
1146 malloc_mutex_unlock(&arenas_lock);
1147 if (arena == NULL) {
1148 ret = EAGAIN;
1149 goto RETURN;
1150 }
1151
1152 /* Set new arena association. */
1153 ARENA_SET(arena);
1d03c1c9 1154#ifdef JEMALLOC_TCACHE
a78e148b 1155 {
1156 tcache_t *tcache = TCACHE_GET();
1157 if (tcache != NULL)
1158 tcache->arena = arena;
1159 }
1d03c1c9 1160#endif
a78e148b 1161 }
1162
1163 ret = 0;
1164RETURN:
1165 return (ret);
1166}
1167
1168#ifdef JEMALLOC_STATS
1169CTL_RO_NL_GEN(thread_allocated, ALLOCATED_GET(), uint64_t);
1170CTL_RO_NL_GEN(thread_allocatedp, ALLOCATEDP_GET(), uint64_t *);
1171CTL_RO_NL_GEN(thread_deallocated, DEALLOCATED_GET(), uint64_t);
1172CTL_RO_NL_GEN(thread_deallocatedp, DEALLOCATEDP_GET(), uint64_t *);
1173#endif
1174
1175/******************************************************************************/
1176
1177#ifdef JEMALLOC_DEBUG
1178CTL_RO_TRUE_GEN(config_debug)
1179#else
1180CTL_RO_FALSE_GEN(config_debug)
1181#endif
1182
1183#ifdef JEMALLOC_DSS
1184CTL_RO_TRUE_GEN(config_dss)
1185#else
1186CTL_RO_FALSE_GEN(config_dss)
1187#endif
1188
1189#ifdef JEMALLOC_DYNAMIC_PAGE_SHIFT
1190CTL_RO_TRUE_GEN(config_dynamic_page_shift)
1191#else
1192CTL_RO_FALSE_GEN(config_dynamic_page_shift)
1193#endif
1194
1195#ifdef JEMALLOC_FILL
1196CTL_RO_TRUE_GEN(config_fill)
1197#else
1198CTL_RO_FALSE_GEN(config_fill)
1199#endif
1200
1201#ifdef JEMALLOC_LAZY_LOCK
1202CTL_RO_TRUE_GEN(config_lazy_lock)
1203#else
1204CTL_RO_FALSE_GEN(config_lazy_lock)
1205#endif
1206
1207#ifdef JEMALLOC_PROF
1208CTL_RO_TRUE_GEN(config_prof)
1209#else
1210CTL_RO_FALSE_GEN(config_prof)
1211#endif
1212
1213#ifdef JEMALLOC_PROF_LIBGCC
1214CTL_RO_TRUE_GEN(config_prof_libgcc)
1215#else
1216CTL_RO_FALSE_GEN(config_prof_libgcc)
1217#endif
1218
1219#ifdef JEMALLOC_PROF_LIBUNWIND
1220CTL_RO_TRUE_GEN(config_prof_libunwind)
1221#else
1222CTL_RO_FALSE_GEN(config_prof_libunwind)
1223#endif
1224
1225#ifdef JEMALLOC_STATS
1226CTL_RO_TRUE_GEN(config_stats)
1227#else
1228CTL_RO_FALSE_GEN(config_stats)
1229#endif
1230
1231#ifdef JEMALLOC_SWAP
1232CTL_RO_TRUE_GEN(config_swap)
1233#else
1234CTL_RO_FALSE_GEN(config_swap)
1235#endif
1236
1237#ifdef JEMALLOC_SYSV
1238CTL_RO_TRUE_GEN(config_sysv)
1239#else
1240CTL_RO_FALSE_GEN(config_sysv)
1241#endif
1242
1243#ifdef JEMALLOC_TCACHE
1244CTL_RO_TRUE_GEN(config_tcache)
1245#else
1246CTL_RO_FALSE_GEN(config_tcache)
1247#endif
1248
1249#ifdef JEMALLOC_TINY
1250CTL_RO_TRUE_GEN(config_tiny)
1251#else
1252CTL_RO_FALSE_GEN(config_tiny)
1253#endif
1254
1255#ifdef JEMALLOC_TLS
1256CTL_RO_TRUE_GEN(config_tls)
1257#else
1258CTL_RO_FALSE_GEN(config_tls)
1259#endif
1260
1261#ifdef JEMALLOC_XMALLOC
1262CTL_RO_TRUE_GEN(config_xmalloc)
1263#else
1264CTL_RO_FALSE_GEN(config_xmalloc)
1265#endif
1266
1267/******************************************************************************/
1268
1269CTL_RO_NL_GEN(opt_abort, opt_abort, bool)
1270CTL_RO_NL_GEN(opt_lg_qspace_max, opt_lg_qspace_max, size_t)
1271CTL_RO_NL_GEN(opt_lg_cspace_max, opt_lg_cspace_max, size_t)
1272CTL_RO_NL_GEN(opt_lg_chunk, opt_lg_chunk, size_t)
1273CTL_RO_NL_GEN(opt_narenas, opt_narenas, size_t)
1274CTL_RO_NL_GEN(opt_lg_dirty_mult, opt_lg_dirty_mult, ssize_t)
1275CTL_RO_NL_GEN(opt_stats_print, opt_stats_print, bool)
1276#ifdef JEMALLOC_FILL
1277CTL_RO_NL_GEN(opt_junk, opt_junk, bool)
1278CTL_RO_NL_GEN(opt_zero, opt_zero, bool)
1279#endif
1280#ifdef JEMALLOC_SYSV
1281CTL_RO_NL_GEN(opt_sysv, opt_sysv, bool)
1282#endif
1283#ifdef JEMALLOC_XMALLOC
1284CTL_RO_NL_GEN(opt_xmalloc, opt_xmalloc, bool)
1285#endif
1286#ifdef JEMALLOC_TCACHE
1287CTL_RO_NL_GEN(opt_tcache, opt_tcache, bool)
1288CTL_RO_NL_GEN(opt_lg_tcache_gc_sweep, opt_lg_tcache_gc_sweep, ssize_t)
1289#endif
1290#ifdef JEMALLOC_PROF
1291CTL_RO_NL_GEN(opt_prof, opt_prof, bool)
1292CTL_RO_NL_GEN(opt_prof_prefix, opt_prof_prefix, const char *)
1293CTL_RO_GEN(opt_prof_active, opt_prof_active, bool) /* Mutable. */
1294CTL_RO_NL_GEN(opt_lg_prof_bt_max, opt_lg_prof_bt_max, size_t)
1295CTL_RO_NL_GEN(opt_lg_prof_sample, opt_lg_prof_sample, size_t)
1296CTL_RO_NL_GEN(opt_lg_prof_interval, opt_lg_prof_interval, ssize_t)
1297CTL_RO_NL_GEN(opt_prof_gdump, opt_prof_gdump, bool)
1298CTL_RO_NL_GEN(opt_prof_leak, opt_prof_leak, bool)
1299CTL_RO_NL_GEN(opt_prof_accum, opt_prof_accum, bool)
1300CTL_RO_NL_GEN(opt_lg_prof_tcmax, opt_lg_prof_tcmax, ssize_t)
1301#endif
1302#ifdef JEMALLOC_SWAP
1303CTL_RO_NL_GEN(opt_overcommit, opt_overcommit, bool)
1304#endif
1305
1306/******************************************************************************/
1307
1308CTL_RO_NL_GEN(arenas_bin_i_size, arena_bin_info[mib[2]].reg_size, size_t)
1309CTL_RO_NL_GEN(arenas_bin_i_nregs, arena_bin_info[mib[2]].nregs, uint32_t)
1310CTL_RO_NL_GEN(arenas_bin_i_run_size, arena_bin_info[mib[2]].run_size, size_t)
1311const ctl_node_t *
1312arenas_bin_i_index(const size_t *mib, size_t miblen, size_t i)
1313{
1314
1315 if (i > nbins)
1316 return (NULL);
1317 return (super_arenas_bin_i_node);
1318}
1319
1320CTL_RO_NL_GEN(arenas_lrun_i_size, ((mib[2]+1) << PAGE_SHIFT), size_t)
1321const ctl_node_t *
1322arenas_lrun_i_index(const size_t *mib, size_t miblen, size_t i)
1323{
1324
1325 if (i > nlclasses)
1326 return (NULL);
1327 return (super_arenas_lrun_i_node);
1328}
1329
1330CTL_RO_NL_GEN(arenas_narenas, narenas, unsigned)
1331
1332static int
1333arenas_initialized_ctl(const size_t *mib, size_t miblen, void *oldp,
1334 size_t *oldlenp, void *newp, size_t newlen)
1335{
1336 int ret;
1337 unsigned nread, i;
1338
1339 malloc_mutex_lock(&ctl_mtx);
1340 READONLY();
1341 if (*oldlenp != narenas * sizeof(bool)) {
1342 ret = EINVAL;
1343 nread = (*oldlenp < narenas * sizeof(bool))
1344 ? (*oldlenp / sizeof(bool)) : narenas;
1345 } else {
1346 ret = 0;
1347 nread = narenas;
1348 }
1349
1350 for (i = 0; i < nread; i++)
1351 ((bool *)oldp)[i] = ctl_stats.arenas[i].initialized;
1352
1353RETURN:
1354 malloc_mutex_unlock(&ctl_mtx);
1355 return (ret);
1356}
1357
1358CTL_RO_NL_GEN(arenas_quantum, QUANTUM, size_t)
1359CTL_RO_NL_GEN(arenas_cacheline, CACHELINE, size_t)
1360CTL_RO_NL_GEN(arenas_subpage, SUBPAGE, size_t)
1361CTL_RO_NL_GEN(arenas_pagesize, PAGE_SIZE, size_t)
1362CTL_RO_NL_GEN(arenas_chunksize, chunksize, size_t)
1363#ifdef JEMALLOC_TINY
1364CTL_RO_NL_GEN(arenas_tspace_min, (1U << LG_TINY_MIN), size_t)
1365CTL_RO_NL_GEN(arenas_tspace_max, (qspace_min >> 1), size_t)
1366#endif
1367CTL_RO_NL_GEN(arenas_qspace_min, qspace_min, size_t)
1368CTL_RO_NL_GEN(arenas_qspace_max, qspace_max, size_t)
1369CTL_RO_NL_GEN(arenas_cspace_min, cspace_min, size_t)
1370CTL_RO_NL_GEN(arenas_cspace_max, cspace_max, size_t)
1371CTL_RO_NL_GEN(arenas_sspace_min, sspace_min, size_t)
1372CTL_RO_NL_GEN(arenas_sspace_max, sspace_max, size_t)
1373#ifdef JEMALLOC_TCACHE
1374CTL_RO_NL_GEN(arenas_tcache_max, tcache_maxclass, size_t)
1375#endif
1376CTL_RO_NL_GEN(arenas_ntbins, ntbins, unsigned)
1377CTL_RO_NL_GEN(arenas_nqbins, nqbins, unsigned)
1378CTL_RO_NL_GEN(arenas_ncbins, ncbins, unsigned)
1379CTL_RO_NL_GEN(arenas_nsbins, nsbins, unsigned)
1380CTL_RO_NL_GEN(arenas_nbins, nbins, unsigned)
1381#ifdef JEMALLOC_TCACHE
1382CTL_RO_NL_GEN(arenas_nhbins, nhbins, unsigned)
1383#endif
1384CTL_RO_NL_GEN(arenas_nlruns, nlclasses, size_t)
1385
1386static int
1387arenas_purge_ctl(const size_t *mib, size_t miblen, void *oldp, size_t *oldlenp,
1388 void *newp, size_t newlen)
1389{
1390 int ret;
1391 unsigned arena;
1392
1393 WRITEONLY();
1394 arena = UINT_MAX;
1395 WRITE(arena, unsigned);
1396 if (newp != NULL && arena >= narenas) {
1397 ret = EFAULT;
1398 goto RETURN;
1399 } else {
1400 arena_t *tarenas[narenas];
1401
1402 malloc_mutex_lock(&arenas_lock);
1403 memcpy(tarenas, arenas, sizeof(arena_t *) * narenas);
1404 malloc_mutex_unlock(&arenas_lock);
1405
1406 if (arena == UINT_MAX) {
1407 unsigned i;
1408 for (i = 0; i < narenas; i++) {
1409 if (tarenas[i] != NULL)
1410 arena_purge_all(tarenas[i]);
1411 }
1412 } else {
1413 assert(arena < narenas);
1414 if (tarenas[arena] != NULL)
1415 arena_purge_all(tarenas[arena]);
1416 }
1417 }
1418
1419 ret = 0;
1420RETURN:
1421 return (ret);
1422}
1423
1424/******************************************************************************/
1425
1426#ifdef JEMALLOC_PROF
1427static int
1428prof_active_ctl(const size_t *mib, size_t miblen, void *oldp, size_t *oldlenp,
1429 void *newp, size_t newlen)
1430{
1431 int ret;
1432 bool oldval;
1433
1434 malloc_mutex_lock(&ctl_mtx); /* Protect opt_prof_active. */
1435 oldval = opt_prof_active;
1436 if (newp != NULL) {
1437 /*
1438 * The memory barriers will tend to make opt_prof_active
1439 * propagate faster on systems with weak memory ordering.
1440 */
1441 mb_write();
1442 WRITE(opt_prof_active, bool);
1443 mb_write();
1444 }
1445 READ(oldval, bool);
1446
1447 ret = 0;
1448RETURN:
1449 malloc_mutex_unlock(&ctl_mtx);
1450 return (ret);
1451}
1452
1453static int
1454prof_dump_ctl(const size_t *mib, size_t miblen, void *oldp, size_t *oldlenp,
1455 void *newp, size_t newlen)
1456{
1457 int ret;
1458 const char *filename = NULL;
1459
1460 WRITEONLY();
1461 WRITE(filename, const char *);
1462
1463 if (prof_mdump(filename)) {
1464 ret = EFAULT;
1465 goto RETURN;
1466 }
1467
1468 ret = 0;
1469RETURN:
1470 return (ret);
1471}
1472
1473CTL_RO_NL_GEN(prof_interval, prof_interval, uint64_t)
1474#endif
1475
1476/******************************************************************************/
1477
1478#ifdef JEMALLOC_STATS
1479CTL_RO_GEN(stats_chunks_current, ctl_stats.chunks.current, size_t)
1480CTL_RO_GEN(stats_chunks_total, ctl_stats.chunks.total, uint64_t)
1481CTL_RO_GEN(stats_chunks_high, ctl_stats.chunks.high, size_t)
1482CTL_RO_GEN(stats_huge_allocated, huge_allocated, size_t)
1483CTL_RO_GEN(stats_huge_nmalloc, huge_nmalloc, uint64_t)
1484CTL_RO_GEN(stats_huge_ndalloc, huge_ndalloc, uint64_t)
1485CTL_RO_GEN(stats_arenas_i_small_allocated,
1486 ctl_stats.arenas[mib[2]].allocated_small, size_t)
1487CTL_RO_GEN(stats_arenas_i_small_nmalloc,
1488 ctl_stats.arenas[mib[2]].nmalloc_small, uint64_t)
1489CTL_RO_GEN(stats_arenas_i_small_ndalloc,
1490 ctl_stats.arenas[mib[2]].ndalloc_small, uint64_t)
1491CTL_RO_GEN(stats_arenas_i_small_nrequests,
1492 ctl_stats.arenas[mib[2]].nrequests_small, uint64_t)
1493CTL_RO_GEN(stats_arenas_i_large_allocated,
1494 ctl_stats.arenas[mib[2]].astats.allocated_large, size_t)
1495CTL_RO_GEN(stats_arenas_i_large_nmalloc,
1496 ctl_stats.arenas[mib[2]].astats.nmalloc_large, uint64_t)
1497CTL_RO_GEN(stats_arenas_i_large_ndalloc,
1498 ctl_stats.arenas[mib[2]].astats.ndalloc_large, uint64_t)
1499CTL_RO_GEN(stats_arenas_i_large_nrequests,
1500 ctl_stats.arenas[mib[2]].astats.nrequests_large, uint64_t)
1501
1502CTL_RO_GEN(stats_arenas_i_bins_j_allocated,
1503 ctl_stats.arenas[mib[2]].bstats[mib[4]].allocated, size_t)
1504CTL_RO_GEN(stats_arenas_i_bins_j_nmalloc,
1505 ctl_stats.arenas[mib[2]].bstats[mib[4]].nmalloc, uint64_t)
1506CTL_RO_GEN(stats_arenas_i_bins_j_ndalloc,
1507 ctl_stats.arenas[mib[2]].bstats[mib[4]].ndalloc, uint64_t)
1508CTL_RO_GEN(stats_arenas_i_bins_j_nrequests,
1509 ctl_stats.arenas[mib[2]].bstats[mib[4]].nrequests, uint64_t)
1510#ifdef JEMALLOC_TCACHE
1511CTL_RO_GEN(stats_arenas_i_bins_j_nfills,
1512 ctl_stats.arenas[mib[2]].bstats[mib[4]].nfills, uint64_t)
1513CTL_RO_GEN(stats_arenas_i_bins_j_nflushes,
1514 ctl_stats.arenas[mib[2]].bstats[mib[4]].nflushes, uint64_t)
1515#endif
1516CTL_RO_GEN(stats_arenas_i_bins_j_nruns,
1517 ctl_stats.arenas[mib[2]].bstats[mib[4]].nruns, uint64_t)
1518CTL_RO_GEN(stats_arenas_i_bins_j_nreruns,
1519 ctl_stats.arenas[mib[2]].bstats[mib[4]].reruns, uint64_t)
1520CTL_RO_GEN(stats_arenas_i_bins_j_highruns,
1521 ctl_stats.arenas[mib[2]].bstats[mib[4]].highruns, size_t)
1522CTL_RO_GEN(stats_arenas_i_bins_j_curruns,
1523 ctl_stats.arenas[mib[2]].bstats[mib[4]].curruns, size_t)
1524
1525const ctl_node_t *
1526stats_arenas_i_bins_j_index(const size_t *mib, size_t miblen, size_t j)
1527{
1528
1529 if (j > nbins)
1530 return (NULL);
1531 return (super_stats_arenas_i_bins_j_node);
1532}
1533
1534CTL_RO_GEN(stats_arenas_i_lruns_j_nmalloc,
1535 ctl_stats.arenas[mib[2]].lstats[mib[4]].nmalloc, uint64_t)
1536CTL_RO_GEN(stats_arenas_i_lruns_j_ndalloc,
1537 ctl_stats.arenas[mib[2]].lstats[mib[4]].ndalloc, uint64_t)
1538CTL_RO_GEN(stats_arenas_i_lruns_j_nrequests,
1539 ctl_stats.arenas[mib[2]].lstats[mib[4]].nrequests, uint64_t)
1540CTL_RO_GEN(stats_arenas_i_lruns_j_curruns,
1541 ctl_stats.arenas[mib[2]].lstats[mib[4]].curruns, size_t)
1542CTL_RO_GEN(stats_arenas_i_lruns_j_highruns,
1543 ctl_stats.arenas[mib[2]].lstats[mib[4]].highruns, size_t)
1544
1545const ctl_node_t *
1546stats_arenas_i_lruns_j_index(const size_t *mib, size_t miblen, size_t j)
1547{
1548
1549 if (j > nlclasses)
1550 return (NULL);
1551 return (super_stats_arenas_i_lruns_j_node);
1552}
1553
1554#endif
1555CTL_RO_GEN(stats_arenas_i_nthreads, ctl_stats.arenas[mib[2]].nthreads, unsigned)
1556CTL_RO_GEN(stats_arenas_i_pactive, ctl_stats.arenas[mib[2]].pactive, size_t)
1557CTL_RO_GEN(stats_arenas_i_pdirty, ctl_stats.arenas[mib[2]].pdirty, size_t)
1558#ifdef JEMALLOC_STATS
1559CTL_RO_GEN(stats_arenas_i_mapped, ctl_stats.arenas[mib[2]].astats.mapped,
1560 size_t)
1561CTL_RO_GEN(stats_arenas_i_npurge, ctl_stats.arenas[mib[2]].astats.npurge,
1562 uint64_t)
1563CTL_RO_GEN(stats_arenas_i_nmadvise, ctl_stats.arenas[mib[2]].astats.nmadvise,
1564 uint64_t)
1565CTL_RO_GEN(stats_arenas_i_purged, ctl_stats.arenas[mib[2]].astats.purged,
1566 uint64_t)
1567#endif
1568
1569const ctl_node_t *
1570stats_arenas_i_index(const size_t *mib, size_t miblen, size_t i)
1571{
1572 const ctl_node_t * ret;
1573
1574 malloc_mutex_lock(&ctl_mtx);
1575 if (ctl_stats.arenas[i].initialized == false) {
1576 ret = NULL;
1577 goto RETURN;
1578 }
1579
1580 ret = super_stats_arenas_i_node;
1581RETURN:
1582 malloc_mutex_unlock(&ctl_mtx);
1583 return (ret);
1584}
1585
1586#ifdef JEMALLOC_STATS
1587CTL_RO_GEN(stats_cactive, &stats_cactive, size_t *)
1588CTL_RO_GEN(stats_allocated, ctl_stats.allocated, size_t)
1589CTL_RO_GEN(stats_active, ctl_stats.active, size_t)
1590CTL_RO_GEN(stats_mapped, ctl_stats.mapped, size_t)
1591#endif
1592
1593/******************************************************************************/
1594
1595#ifdef JEMALLOC_SWAP
1596# ifdef JEMALLOC_STATS
1597CTL_RO_GEN(swap_avail, ctl_stats.swap_avail, size_t)
1598# endif
1599
1600static int
1601swap_prezeroed_ctl(const size_t *mib, size_t miblen, void *oldp,
1602 size_t *oldlenp, void *newp, size_t newlen)
1603{
1604 int ret;
1605
1606 malloc_mutex_lock(&ctl_mtx);
1607 if (swap_enabled) {
1608 READONLY();
1609 } else {
1610 /*
1611 * swap_prezeroed isn't actually used by the swap code until it
1612 * is set during a successful chunk_swap_enabled() call. We
1613 * use it here to store the value that we'll pass to
1614 * chunk_swap_enable() in a swap.fds mallctl(). This is not
1615 * very clean, but the obvious alternatives are even worse.
1616 */
1617 WRITE(swap_prezeroed, bool);
1618 }
1619
1620 READ(swap_prezeroed, bool);
1621
1622 ret = 0;
1623RETURN:
1624 malloc_mutex_unlock(&ctl_mtx);
1625 return (ret);
1626}
1627
1628CTL_RO_GEN(swap_nfds, swap_nfds, size_t)
1629
1630static int
1631swap_fds_ctl(const size_t *mib, size_t miblen, void *oldp, size_t *oldlenp,
1632 void *newp, size_t newlen)
1633{
1634 int ret;
1635
1636 malloc_mutex_lock(&ctl_mtx);
1637 if (swap_enabled) {
1638 READONLY();
1639 } else if (newp != NULL) {
1640 size_t nfds = newlen / sizeof(int);
1641
1642 {
1643 int fds[nfds];
1644
1645 memcpy(fds, newp, nfds * sizeof(int));
1646 if (chunk_swap_enable(fds, nfds, swap_prezeroed)) {
1647 ret = EFAULT;
1648 goto RETURN;
1649 }
1650 }
1651 }
1652
1653 if (oldp != NULL && oldlenp != NULL) {
1654 if (*oldlenp != swap_nfds * sizeof(int)) {
1655 size_t copylen = (swap_nfds * sizeof(int) <= *oldlenp)
1656 ? swap_nfds * sizeof(int) : *oldlenp;
1657
1658 memcpy(oldp, swap_fds, copylen);
1659 ret = EINVAL;
1660 goto RETURN;
1661 } else
1662 memcpy(oldp, swap_fds, *oldlenp);
1663 }
1664
1665 ret = 0;
1666RETURN:
1667 malloc_mutex_unlock(&ctl_mtx);
1668 return (ret);
1669}
1670#endif
Redis += OpenLDAP MDB