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--- old/usr/src/lib/libc/inc/thr_uberdata.h
+++ new/usr/src/lib/libc/inc/thr_uberdata.h
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21
22 22 /*
23 23 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
24 24 */
25 25
26 26 /*
27 27 * Copyright 2016 Joyent, Inc.
28 28 * Copyright 2018 Nexenta Systems, Inc.
29 29 */
30 30
31 31 #ifndef _THR_UBERDATA_H
32 32 #define _THR_UBERDATA_H
33 33
34 34 #include <stdlib.h>
35 35 #include <unistd.h>
36 36 #include <sys/types.h>
37 37 #include <fcntl.h>
38 38 #include <string.h>
39 39 #include <signal.h>
40 40 #include <ucontext.h>
41 41 #include <thread.h>
42 42 #include <pthread.h>
43 43 #include <atomic.h>
44 44 #include <link.h>
45 45 #include <sys/resource.h>
46 46 #include <sys/lwp.h>
47 47 #include <errno.h>
48 48 #include <sys/asm_linkage.h>
49 49 #include <sys/regset.h>
50 50 #include <sys/fcntl.h>
51 51 #include <sys/mman.h>
52 52 #include <synch.h>
53 53 #include <door.h>
54 54 #include <limits.h>
55 55 #include <sys/synch32.h>
56 56 #include <schedctl.h>
57 57 #include <sys/priocntl.h>
58 58 #include <thread_db.h>
59 59 #include <setjmp.h>
60 60 #include "libc_int.h"
61 61 #include "tdb_agent.h"
62 62 #include "thr_debug.h"
63 63
64 64 /*
65 65 * This is an implementation-specific include file for threading support.
66 66 * It is not to be seen by the clients of the library.
67 67 *
68 68 * This file also describes uberdata in libc.
69 69 *
70 70 * The term "uberdata" refers to data that is unique and visible across
71 71 * all link maps. The name is meant to imply that such data is truly
72 72 * global, not just locally global to a particular link map.
73 73 *
74 74 * See the Linker and Libraries Guide for a full description of alternate
75 75 * link maps and how they are set up and used.
76 76 *
77 77 * Alternate link maps implement multiple global namespaces within a single
78 78 * process. There may be multiple instances of identical dynamic libraries
79 79 * loaded in a process's address space at the same time, each on a different
80 80 * link map (as determined by the dynamic linker), each with its own set of
81 81 * global variables. Which particular instance of a global variable is seen
82 82 * by a thread running in the process is determined by the link map on which
83 83 * the thread happens to be executing at the time.
84 84 *
85 85 * However, there are aspects of a process that are unique across all
86 86 * link maps, in particular the structures used to implement threads
87 87 * of control (in Sparc terminology, there is only one %g7 regardless
88 88 * of the link map on which the thread is executing).
89 89 *
90 90 * All uberdata is referenced from a base pointer in the thread's ulwp_t
91 91 * structure (which is also uberdata). All allocations and deallocations
92 92 * of uberdata are made via the uberdata-aware lmalloc() and lfree()
93 93 * interfaces (malloc() and free() are simply locally-global).
94 94 */
95 95
96 96 /*
97 97 * Special libc-private access to errno.
98 98 * We do this so that references to errno do not invoke the dynamic linker.
99 99 */
100 100 #undef errno
101 101 #define errno (*curthread->ul_errnop)
102 102
103 103 /*
104 104 * See <sys/synch32.h> for the reasons for these values
105 105 * and why they are different for sparc and intel.
106 106 */
107 107 #if defined(__sparc)
108 108
109 109 /* lock.lock64.pad[x] 4 5 6 7 */
110 110 #define LOCKMASK 0xff000000
111 111 #define WAITERMASK 0x000000ff
112 112 #define SPINNERMASK 0x00ff0000
113 113 #define SPINNERSHIFT 16
114 114 #define WAITER 0x00000001
115 115 #define LOCKSET 0xff
116 116 #define LOCKCLEAR 0
117 117
118 118 #define PIDSHIFT 32
119 119 #define LOCKMASK64 0xffffffffff000000ULL
120 120 #define LOCKBYTE64 0x00000000ff000000ULL
121 121 #define WAITERMASK64 0x00000000000000ffULL
122 122 #define SPINNERMASK64 0x0000000000ff0000ULL
123 123
124 124 #elif defined(__x86)
125 125
126 126 /* lock.lock64.pad[x] 7 6 5 4 */
127 127 #define LOCKMASK 0xff000000
128 128 #define WAITERMASK 0x00ff0000
129 129 #define SPINNERMASK 0x0000ff00
130 130 #define SPINNERSHIFT 8
131 131 #define WAITER 0x00010000
132 132 #define LOCKSET 0x01
133 133 #define LOCKCLEAR 0
134 134
135 135 #define PIDSHIFT 0
136 136 #define LOCKMASK64 0xff000000ffffffffULL
137 137 #define LOCKBYTE64 0x0100000000000000ULL
138 138 #define WAITERMASK64 0x00ff000000000000ULL
139 139 #define SPINNERMASK64 0x0000ff0000000000ULL
140 140
141 141 #else
142 142 #error "neither __sparc nor __x86 is defined"
143 143 #endif
144 144
145 145 /*
146 146 * Fetch the owner of a USYNC_THREAD mutex.
147 147 * Don't use this with process-shared mutexes;
148 148 * the owing thread may be in a different process.
149 149 */
150 150 #define MUTEX_OWNER(mp) ((ulwp_t *)(uintptr_t)(mp)->mutex_owner)
151 151
152 152 /*
153 153 * Test if a thread owns a process-private (USYNC_THREAD) mutex.
154 154 * This is inappropriate for a process-shared (USYNC_PROCESS) mutex.
155 155 * The 'mp' argument must not have side-effects since it is evaluated twice.
156 156 */
157 157 #define MUTEX_OWNED(mp, thrp) \
158 158 ((mp)->mutex_lockw != 0 && MUTEX_OWNER(mp) == thrp)
159 159
160 160
161 161 /*
162 162 * uberflags.uf_tdb_register_sync is an interface with libc_db to enable the
163 163 * collection of lock statistics by a debugger or other collecting tool.
164 164 *
165 165 * uberflags.uf_thread_error_detection is set by an environment variable:
166 166 * _THREAD_ERROR_DETECTION
167 167 * 0 == no detection of locking primitive errors.
168 168 * 1 == detect errors and issue a warning message.
169 169 * 2 == detect errors, issue a warning message, and dump core.
170 170 *
171 171 * We bundle these together in uberflags.uf_trs_ted to make a test of either
172 172 * being non-zero a single memory reference (for speed of mutex_lock(), etc).
173 173 *
174 174 * uberflags.uf_mt is set non-zero when the first thread (in addition
175 175 * to the main thread) is created.
176 176 *
177 177 * We bundle all these flags together in uberflags.uf_all to make a test
178 178 * of any being non-zero a single memory reference (again, for speed).
179 179 */
180 180 typedef union {
181 181 int uf_all; /* combined all flags */
182 182 struct {
183 183 short h_pad;
184 184 short h_trs_ted; /* combined reg sync & error detect */
185 185 } uf_h;
186 186 struct {
187 187 char x_mt;
188 188 char x_pad;
189 189 char x_tdb_register_sync;
190 190 char x_thread_error_detection;
191 191 } uf_x;
192 192 } uberflags_t;
193 193
194 194 #define uf_mt uf_x.x_mt
195 195 #define uf_tdb_register_sync uf_x.x_tdb_register_sync
196 196 #define uf_thread_error_detection uf_x.x_thread_error_detection
197 197 #define uf_trs_ted uf_h.h_trs_ted /* both of the above */
198 198
199 199 /*
200 200 * NOTE WELL:
201 201 * To enable further optimization, the "ul_schedctl_called" member
202 202 * of the ulwp_t structure (below) serves double-duty:
203 203 * 1. If NULL, it means that the thread must call __schedctl()
204 204 * to set up its schedctl mappings before acquiring a mutex.
205 205 * This is required by the implementation of adaptive mutex locking.
206 206 * 2. If non-NULL, it points to uberdata.uberflags, so that tests of
207 207 * uberflags can be made without additional memory references.
208 208 * This allows the common case of _mutex_lock() and _mutex_unlock() for
209 209 * USYNC_THREAD mutexes with no error detection and no lock statistics
210 210 * to be optimized for speed.
211 211 */
212 212
213 213 /* double the default stack size for 64-bit processes */
214 214 #ifdef _LP64
215 215 #define MINSTACK (8 * 1024)
216 216 #define DEFAULTSTACK (2 * 1024 * 1024)
217 217 #else
218 218 #define MINSTACK (4 * 1024)
219 219 #define DEFAULTSTACK (1024 * 1024)
220 220 #endif
221 221
222 222 #define MUTEX_TRY 0
223 223 #define MUTEX_LOCK 1
224 224 #define MUTEX_NOCEIL 0x40
225 225
226 226 #if defined(__x86)
227 227
228 228 typedef struct { /* structure returned by fnstenv */
229 229 int fctrl; /* control word */
230 230 int fstat; /* status word (flags, etc) */
231 231 int ftag; /* tag of which regs busy */
232 232 int misc[4]; /* other stuff, 28 bytes total */
233 233 } fpuenv_t;
234 234
235 235 #ifdef _SYSCALL32
236 236 typedef fpuenv_t fpuenv32_t;
237 237 #endif /* _SYSCALL32 */
238 238
239 239 #elif defined(__sparc)
240 240
241 241 typedef struct { /* fp state structure */
242 242 greg_t fsr;
243 243 greg_t fpu_en;
244 244 } fpuenv_t;
245 245
246 246 #ifdef _SYSCALL32
247 247 typedef struct {
248 248 greg32_t fsr;
249 249 greg32_t fpu_en;
250 250 } fpuenv32_t;
251 251 #endif /* _SYSCALL32 */
252 252
253 253 #endif /* __x86 */
254 254
255 255 #if defined(__x86)
256 256 extern void ht_pause(void); /* "pause" instruction */
257 257 #define SMT_PAUSE() ht_pause()
258 258 #elif defined(SMT_PAUSE_FUNCTION)
259 259 extern void SMT_PAUSE_FUNCTION(void);
260 260 #define SMT_PAUSE() SMT_PAUSE_FUNCTION()
261 261 #else
262 262 #define SMT_PAUSE() smt_pause()
263 263 #endif /* __x86 */
264 264
265 265 /*
266 266 * Cleanup handler related data.
267 267 * This structure is exported as _cleanup_t in pthread.h.
268 268 * pthread.h exports only the size of this structure, so check
269 269 * _cleanup_t in pthread.h before making any change here.
270 270 */
271 271 typedef struct __cleanup {
272 272 struct __cleanup *next; /* pointer to next handler */
273 273 caddr_t fp; /* current frame pointer */
274 274 void (*func)(void *); /* cleanup handler address */
275 275 void *arg; /* handler's argument */
276 276 } __cleanup_t;
277 277
278 278 /*
279 279 * Thread-Specific Data (TSD)
280 280 * TSD_NFAST includes the invalid key zero, so there
281 281 * are really only (TSD_NFAST - 1) fast key slots.
282 282 */
283 283 typedef void (*PFrV)(void *);
284 284 #define TSD_UNALLOCATED ((PFrV)1)
285 285 #define TSD_NFAST 9
286 286
287 287 /*
288 288 * The tsd union is designed to burn a little memory (9 words) to make
289 289 * lookups blindingly fast. Note that tsd_nalloc could be placed at the
290 290 * end of the pad region to increase the likelihood that it falls on the
291 291 * same cache line as the data.
292 292 */
293 293 typedef union tsd {
294 294 uint_t tsd_nalloc; /* Amount of allocated storage */
295 295 void *tsd_pad[TSD_NFAST];
296 296 void *tsd_data[1];
297 297 } tsd_t;
298 298
299 299 typedef struct {
300 300 mutex_t tsdm_lock; /* Lock protecting the data */
301 301 uint_t tsdm_nkeys; /* Number of allocated keys */
302 302 uint_t tsdm_nused; /* Number of used keys */
303 303 PFrV *tsdm_destro; /* Per-key destructors */
304 304 char tsdm_pad[64 - /* pad to 64 bytes */
305 305 (sizeof (mutex_t) + 2 * sizeof (uint_t) + sizeof (PFrV *))];
306 306 } tsd_metadata_t;
307 307
308 308 #ifdef _SYSCALL32
309 309 typedef union tsd32 {
310 310 uint_t tsd_nalloc; /* Amount of allocated storage */
311 311 caddr32_t tsd_pad[TSD_NFAST];
312 312 caddr32_t tsd_data[1];
313 313 } tsd32_t;
314 314
315 315 typedef struct {
316 316 mutex_t tsdm_lock; /* Lock protecting the data */
317 317 uint_t tsdm_nkeys; /* Number of allocated keys */
318 318 uint_t tsdm_nused; /* Number of used keys */
319 319 caddr32_t tsdm_destro; /* Per-key destructors */
320 320 char tsdm_pad[64 - /* pad to 64 bytes */
321 321 (sizeof (mutex_t) + 2 * sizeof (uint_t) + sizeof (caddr32_t))];
322 322 } tsd_metadata32_t;
323 323 #endif /* _SYSCALL32 */
324 324
325 325
326 326 /*
327 327 * Thread-Local Storage (TLS)
328 328 */
329 329 typedef struct {
330 330 void *tls_data;
331 331 size_t tls_size;
332 332 } tls_t;
333 333
334 334 typedef struct {
335 335 mutex_t tls_lock; /* Lock protecting the data */
336 336 tls_t tls_modinfo; /* Root of all TLS_modinfo data */
337 337 tls_t static_tls; /* Template for static TLS */
338 338 char tls_pad[64 - /* pad to 64 bytes */
339 339 (sizeof (mutex_t) + 2 * sizeof (tls_t))];
340 340 } tls_metadata_t;
341 341
342 342 #ifdef _SYSCALL32
343 343 typedef struct {
344 344 caddr32_t tls_data;
345 345 size32_t tls_size;
346 346 } tls32_t;
347 347
348 348 typedef struct {
349 349 mutex_t tls_lock; /* Lock protecting the data */
350 350 tls32_t tls_modinfo; /* Root of all TLS_modinfo data */
351 351 tls32_t static_tls; /* Template for static TLS */
352 352 char tls_pad[64 - /* pad to 64 bytes */
353 353 (sizeof (mutex_t) + 2 * sizeof (tls32_t))];
354 354 } tls_metadata32_t;
355 355 #endif /* _SYSCALL32 */
356 356
357 357
358 358 /*
359 359 * Sleep queue root for USYNC_THREAD condvars and mutexes.
360 360 * There is a default queue root for each queue head (see below).
361 361 * Also, each ulwp_t contains a queue root that can be used
362 362 * when the thread is enqueued on the queue, if necessary
363 363 * (when more than one wchan hashes to the same queue head).
364 364 */
365 365 typedef struct queue_root {
366 366 struct queue_root *qr_next;
367 367 struct queue_root *qr_prev;
368 368 struct ulwp *qr_head;
369 369 struct ulwp *qr_tail;
370 370 void *qr_wchan;
371 371 uint32_t qr_rtcount;
372 372 uint32_t qr_qlen;
373 373 uint32_t qr_qmax;
374 374 } queue_root_t;
375 375
376 376 #ifdef _SYSCALL32
377 377 typedef struct queue_root32 {
378 378 caddr32_t qr_next;
379 379 caddr32_t qr_prev;
380 380 caddr32_t qr_head;
381 381 caddr32_t qr_tail;
382 382 caddr32_t qr_wchan;
383 383 uint32_t qr_rtcount;
384 384 uint32_t qr_qlen;
385 385 uint32_t qr_qmax;
386 386 } queue_root32_t;
387 387 #endif
388 388
389 389 /*
390 390 * Sleep queue heads for USYNC_THREAD condvars and mutexes.
391 391 * The size and alignment is 128 bytes to reduce cache conflicts.
392 392 * Each queue head points to a list of queue roots, defined above.
393 393 * Each queue head contains a default queue root for use when only one
394 394 * is needed. It is always at the tail of the queue root hash chain.
395 395 */
396 396 typedef union {
397 397 uint64_t qh_64[16];
398 398 struct {
399 399 mutex_t q_lock;
400 400 uint8_t q_qcnt;
401 401 uint8_t q_type; /* MX or CV */
402 402 uint8_t q_pad1[2];
403 403 uint32_t q_lockcount;
404 404 uint32_t q_qlen;
405 405 uint32_t q_qmax;
406 406 void *q_wchan; /* valid only while locked */
407 407 struct queue_root *q_root; /* valid only while locked */
408 408 struct queue_root *q_hlist;
409 409 #if !defined(_LP64)
410 410 caddr_t q_pad2[3];
411 411 #endif
412 412 queue_root_t q_def_root;
413 413 uint32_t q_hlen;
414 414 uint32_t q_hmax;
415 415 } qh_qh;
416 416 } queue_head_t;
417 417
418 418 #define qh_lock qh_qh.q_lock
419 419 #define qh_qcnt qh_qh.q_qcnt
420 420 #define qh_type qh_qh.q_type
421 421 #if defined(THREAD_DEBUG)
422 422 #define qh_lockcount qh_qh.q_lockcount
423 423 #define qh_qlen qh_qh.q_qlen
424 424 #define qh_qmax qh_qh.q_qmax
425 425 #endif
426 426 #define qh_wchan qh_qh.q_wchan
427 427 #define qh_root qh_qh.q_root
428 428 #define qh_hlist qh_qh.q_hlist
429 429 #define qh_def_root qh_qh.q_def_root
430 430 #define qh_hlen qh_qh.q_hlen
431 431 #define qh_hmax qh_qh.q_hmax
432 432
433 433 /* queue types passed to queue_lock() */
434 434 #define MX 0
435 435 #define CV 1
436 436 #define QHASHSHIFT 9 /* number of hashing bits */
437 437 #define QHASHSIZE (1 << QHASHSHIFT) /* power of 2 (1<<9 == 512) */
438 438 #define QUEUE_HASH(wchan, type) ((uint_t) \
439 439 ((((uintptr_t)(wchan) >> 3) \
440 440 ^ ((uintptr_t)(wchan) >> (QHASHSHIFT + 3))) \
441 441 & (QHASHSIZE - 1)) + (((type) == MX)? 0 : QHASHSIZE))
442 442
443 443 extern queue_head_t *queue_lock(void *, int);
444 444 extern void queue_unlock(queue_head_t *);
445 445 extern void enqueue(queue_head_t *, struct ulwp *, int);
446 446 extern struct ulwp *dequeue(queue_head_t *, int *);
447 447 extern struct ulwp **queue_slot(queue_head_t *, struct ulwp **, int *);
448 448 extern struct ulwp *queue_waiter(queue_head_t *);
449 449 extern int dequeue_self(queue_head_t *);
450 450 extern void queue_unlink(queue_head_t *,
451 451 struct ulwp **, struct ulwp *);
452 452 extern void unsleep_self(void);
453 453 extern void spin_lock_set(mutex_t *);
454 454 extern void spin_lock_clear(mutex_t *);
455 455
456 456 /*
457 457 * Scheduling class information structure.
458 458 */
459 459 typedef struct {
460 460 short pcc_state;
461 461 short pcc_policy;
462 462 pri_t pcc_primin;
463 463 pri_t pcc_primax;
464 464 pcinfo_t pcc_info;
465 465 } pcclass_t;
466 466
467 467 /*
468 468 * Memory block for chain of owned ceiling mutexes.
469 469 */
470 470 typedef struct mxchain {
471 471 struct mxchain *mxchain_next;
472 472 mutex_t *mxchain_mx;
473 473 } mxchain_t;
474 474
475 475 /*
476 476 * Pointer to an rwlock that is held for reading.
477 477 * Used in rw_rdlock() to allow a thread that already holds a read
478 478 * lock to acquire another read lock on the same rwlock even if
479 479 * there are writers waiting. This to avoid deadlock when acquiring
480 480 * a read lock more than once in the presence of pending writers.
481 481 * POSIX mandates this behavior.
482 482 */
483 483 typedef struct {
484 484 void *rd_rwlock; /* the rwlock held for reading */
485 485 size_t rd_count; /* count of read locks applied */
486 486 } readlock_t;
487 487
488 488 #ifdef _SYSCALL32
489 489 typedef struct {
490 490 caddr32_t rd_rwlock;
491 491 size32_t rd_count;
492 492 } readlock32_t;
493 493 #endif /* _SYSCALL32 */
494 494
495 495 /*
496 496 * As part of per-thread caching libumem (ptcumem), we add a small amount to the
497 497 * thread's uberdata to facilitate it. The tm_roots are the roots of linked
498 498 * lists which is used by libumem to chain together allocations. tm_size is used
499 499 * to track the total amount of data stored across those linked lists. For more
500 500 * information, see libumem's big theory statement.
501 501 */
502 502 #define NTMEMBASE 16
503 503
504 504 typedef struct {
505 505 size_t tm_size;
506 506 void *tm_roots[NTMEMBASE];
507 507 } tumem_t;
508 508
509 509 #ifdef _SYSCALL32
510 510 typedef struct {
511 511 uint32_t tm_size;
512 512 caddr32_t tm_roots[NTMEMBASE];
513 513 } tumem32_t;
514 514 #endif
515 515
516 516 typedef void (*tmem_func_t)(void *, int);
517 517
518 518 /*
519 519 * Maximum number of read locks allowed for one thread on one rwlock.
520 520 * This could be as large as INT_MAX, but the SUSV3 test suite would
521 521 * take an inordinately long time to complete. This is big enough.
522 522 */
523 523 #define READ_LOCK_MAX 100000
524 524
525 525 #define ul_tlsent ul_tls.tls_data /* array of pointers to dynamic TLS */
526 526 #define ul_ntlsent ul_tls.tls_size /* number of entries in ul_tlsent */
527 527
528 528 /*
529 529 * Round up an integral value to a multiple of 64
530 530 */
531 531 #define roundup64(x) (-(-(x) & -64))
532 532
533 533 /*
534 534 * NOTE: Whatever changes are made to ulwp_t must be
535 535 * reflected in $SRC/cmd/mdb/common/modules/libc/libc.c
536 536 *
537 537 * NOTE: ul_self *must* be the first member of ulwp_t on x86
538 538 * Low-level x86 code relies on this.
539 539 */
540 540 typedef struct ulwp {
541 541 /*
542 542 * These members always need to come first on sparc.
543 543 * For dtrace, a ulwp_t must be aligned on a 64-byte boundary.
544 544 */
545 545 #if defined(__sparc)
546 546 uint32_t ul_dinstr; /* scratch space for dtrace */
547 547 uint32_t ul_padsparc0[15];
548 548 uint32_t ul_dsave; /* dtrace: save %g1, %g0, %sp */
549 549 uint32_t ul_drestore; /* dtrace: restore %g0, %g0, %g0 */
550 550 uint32_t ul_dftret; /* dtrace: return probe fasttrap */
551 551 uint32_t ul_dreturn; /* dtrace: return %o0 */
552 552 #endif
553 553 struct ulwp *ul_self; /* pointer to self */
554 554 #if defined(__i386)
555 555 uint8_t ul_dinstr[40]; /* scratch space for dtrace */
556 556 #elif defined(__amd64)
557 557 uint8_t ul_dinstr[56]; /* scratch space for dtrace */
558 558 #endif
559 559 struct uberdata *ul_uberdata; /* uber (super-global) data */
560 560 tls_t ul_tls; /* dynamic thread-local storage base */
561 561 struct ulwp *ul_forw; /* forw, back all_lwps list, */
562 562 struct ulwp *ul_back; /* protected by link_lock */
563 563 struct ulwp *ul_next; /* list to keep track of stacks */
564 564 struct ulwp *ul_hash; /* hash chain linked list */
565 565 void *ul_rval; /* return value from thr_exit() */
566 566 caddr_t ul_stk; /* mapping base of the stack */
567 567 size_t ul_mapsiz; /* mapping size of the stack */
568 568 size_t ul_guardsize; /* normally _lpagesize */
569 569 uintptr_t ul_stktop; /* broken thr_stksegment() interface */
570 570 size_t ul_stksiz; /* broken thr_stksegment() interface */
571 571 stack_t ul_ustack; /* current stack boundaries */
572 572 int ul_ix; /* hash index */
573 573 lwpid_t ul_lwpid; /* thread id, aka the lwp id */
574 574 pri_t ul_pri; /* scheduling priority */
575 575 pri_t ul_epri; /* real-time ceiling priority */
576 576 char ul_policy; /* scheduling policy */
577 577 char ul_cid; /* scheduling class id */
578 578 union {
579 579 struct {
580 580 char cursig; /* deferred signal number */
581 581 char pleasestop; /* lwp requested to stop itself */
582 582 } s;
583 583 short curplease; /* for testing both at once */
584 584 } ul_cp;
585 585 char ul_stop; /* reason for stopping */
586 586 char ul_signalled; /* this lwp was cond_signal()d */
587 587 char ul_dead; /* this lwp has called thr_exit */
588 588 char ul_unwind; /* posix: unwind C++ stack */
589 589 char ul_detached; /* THR_DETACHED at thread_create() */
590 590 /* or pthread_detach() was called */
591 591 char ul_writer; /* sleeping in rw_wrlock() */
592 592 char ul_stopping; /* set by curthread: stopping self */
593 593 char ul_cancel_prologue; /* for _cancel_prologue() */
594 594 short ul_preempt; /* no_preempt()/preempt() */
595 595 short ul_savpreempt; /* pre-existing preempt value */
596 596 char ul_sigsuspend; /* thread is in sigsuspend/pollsys */
597 597 char ul_main; /* thread is the main thread */
598 598 char ul_fork; /* thread is performing a fork */
599 599 char ul_primarymap; /* primary link-map is initialized */
600 600 /* per-thread copies of the corresponding global variables */
601 601 uint8_t ul_max_spinners; /* thread_max_spinners */
602 602 char ul_door_noreserve; /* thread_door_noreserve */
603 603 char ul_queue_fifo; /* thread_queue_fifo */
604 604 char ul_cond_wait_defer; /* thread_cond_wait_defer */
605 605 char ul_error_detection; /* thread_error_detection */
606 606 char ul_async_safe; /* thread_async_safe */
607 607 char ul_rt; /* found on an RT queue */
608 608 char ul_rtqueued; /* was RT when queued */
609 609 char ul_misaligned; /* thread_locks_misaligned */
610 610 char ul_pad[3];
611 611 int ul_adaptive_spin; /* thread_adaptive_spin */
612 612 int ul_queue_spin; /* thread_queue_spin */
613 613 volatile int ul_critical; /* non-zero == in a critical region */
614 614 int ul_sigdefer; /* non-zero == defer signals */
615 615 int ul_vfork; /* thread is the child of vfork() */
616 616 int ul_cancelable; /* _cancelon()/_canceloff() */
617 617 char ul_cancel_pending; /* pthread_cancel() was called */
618 618 char ul_cancel_disabled; /* PTHREAD_CANCEL_DISABLE */
619 619 char ul_cancel_async; /* PTHREAD_CANCEL_ASYNCHRONOUS */
620 620 char ul_save_async; /* saved copy of ul_cancel_async */
621 621 char ul_mutator; /* lwp is a mutator (java interface) */
622 622 char ul_created; /* created suspended */
623 623 char ul_replace; /* replacement; must be free()d */
624 624 uchar_t ul_nocancel; /* cancellation can't happen */
625 625 int ul_errno; /* per-thread errno */
626 626 int *ul_errnop; /* pointer to errno or self->ul_errno */
627 627 __cleanup_t *ul_clnup_hdr; /* head of cleanup handlers list */
628 628 uberflags_t *ul_schedctl_called; /* ul_schedctl is set up */
629 629 volatile sc_shared_t *ul_schedctl; /* schedctl data */
630 630 int ul_bindflags; /* bind_guard() interface to ld.so.1 */
631 631 uint_t ul_libc_locks; /* count of cancel_safe_mutex_lock()s */
632 632 tsd_t *ul_stsd; /* slow TLS for keys >= TSD_NFAST */
633 633 void *ul_ftsd[TSD_NFAST]; /* fast TLS for keys < TSD_NFAST */
634 634 td_evbuf_t ul_td_evbuf; /* event buffer */
635 635 char ul_td_events_enable; /* event mechanism enabled */
636 636 char ul_sync_obj_reg; /* tdb_sync_obj_register() */
637 637 char ul_qtype; /* MX or CV */
638 638 char ul_cv_wake; /* != 0: just wake up, don't requeue */
639 639 int ul_rtld; /* thread is running inside ld.so.1 */
640 640 int ul_usropts; /* flags given to thr_create() */
641 641 void *(*ul_startpc)(void *); /* start func (thr_create()) */
642 642 void *ul_startarg; /* argument for start function */
643 643 void *ul_wchan; /* synch object when sleeping */
644 644 struct ulwp *ul_link; /* sleep queue link */
645 645 queue_head_t *ul_sleepq; /* sleep queue thread is waiting on */
646 646 mutex_t *ul_cvmutex; /* mutex dropped when waiting on a cv */
647 647 mxchain_t *ul_mxchain; /* chain of owned ceiling mutexes */
648 648 int ul_save_state; /* bind_guard() interface to ld.so.1 */
649 649 uint_t ul_rdlockcnt; /* # entries in ul_readlock array */
650 650 /* 0 means there is but a single entry */
651 651 union { /* single entry or pointer to array */
652 652 readlock_t single;
653 653 readlock_t *array;
654 654 } ul_readlock;
655 655 uint_t ul_heldlockcnt; /* # entries in ul_heldlocks array */
656 656 /* 0 means there is but a single entry */
657 657 union { /* single entry or pointer to array */
658 658 mutex_t *single;
659 659 mutex_t **array;
660 660 } ul_heldlocks;
661 661 /* PROBE_SUPPORT begin */
662 662 void *ul_tpdp;
663 663 /* PROBE_SUPPORT end */
664 664 ucontext_t *ul_siglink; /* pointer to previous context */
665 665 uint_t ul_spin_lock_spin; /* spin lock statistics */
666 666 uint_t ul_spin_lock_spin2;
667 667 uint_t ul_spin_lock_sleep;
668 668 uint_t ul_spin_lock_wakeup;
669 669 queue_root_t ul_queue_root; /* root of a sleep queue */
670 670 id_t ul_rtclassid; /* real-time class id */
671 671 uint_t ul_pilocks; /* count of PI locks held */
672 672 /* the following members *must* be last in the structure */
673 673 /* they are discarded when ulwp is replaced on thr_exit() */
674 674 sigset_t ul_sigmask; /* thread's current signal mask */
675 675 sigset_t ul_tmpmask; /* signal mask for sigsuspend/pollsys */
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676 676 siginfo_t ul_siginfo; /* deferred siginfo */
677 677 mutex_t ul_spinlock; /* used when suspending/continuing */
678 678 fpuenv_t ul_fpuenv; /* floating point state */
679 679 uintptr_t ul_sp; /* stack pointer when blocked */
680 680 void *ul_ex_unwind; /* address of _ex_unwind() or -1 */
681 681 #if defined(sparc)
682 682 void *ul_unwind_ret; /* used only by _ex_clnup_handler() */
683 683 #endif
684 684 tumem_t ul_tmem; /* used only by umem */
685 685 uint_t ul_ptinherit; /* pthreads sched inherit value */
686 - char ul_ntoabuf[18]; /* thread-specific inet_ntoa buffer */
687 686 } ulwp_t;
688 687
689 688 #define ul_cursig ul_cp.s.cursig /* deferred signal number */
690 689 #define ul_pleasestop ul_cp.s.pleasestop /* lwp requested to stop */
691 690 #define ul_curplease ul_cp.curplease /* for testing both at once */
692 691
693 692 /*
694 693 * This is the size of a replacement ulwp, retained only for the benefit
695 694 * of thr_join(). The trailing members are unneeded for this purpose.
696 695 */
697 696 #define REPLACEMENT_SIZE ((size_t)&((ulwp_t *)NULL)->ul_sigmask)
698 697
699 698 /*
700 699 * Definitions for static initialization of signal sets,
701 700 * plus some sneaky optimizations in various places.
702 701 */
703 702
704 703 #define SIGMASK(sig) ((uint32_t)1 << (((sig) - 1) & (32 - 1)))
705 704
706 705 #if (MAXSIG > (2 * 32) && MAXSIG <= (3 * 32))
707 706 #define FILLSET0 0xffffffffu
708 707 #define FILLSET1 0xffffffffu
709 708 #define FILLSET2 ((1u << (MAXSIG - 64)) - 1)
710 709 #define FILLSET3 0
711 710 #else
712 711 #error "fix me: MAXSIG out of bounds"
713 712 #endif
714 713
715 714 #define CANTMASK0 (SIGMASK(SIGKILL) | SIGMASK(SIGSTOP))
716 715 #define CANTMASK1 0
717 716 #define CANTMASK2 0
718 717 #define CANTMASK3 0
719 718
720 719 #define MASKSET0 (FILLSET0 & ~CANTMASK0)
721 720 #define MASKSET1 (FILLSET1 & ~CANTMASK1)
722 721 #define MASKSET2 (FILLSET2 & ~CANTMASK2)
723 722 #define MASKSET3 (FILLSET3 & ~CANTMASK3)
724 723
725 724 extern const sigset_t maskset; /* set of all maskable signals */
726 725
727 726 extern int thread_adaptive_spin;
728 727 extern uint_t thread_max_spinners;
729 728 extern int thread_queue_spin;
730 729 extern int thread_queue_fifo;
731 730 extern int thread_queue_dump;
732 731 extern int thread_cond_wait_defer;
733 732 extern int thread_async_safe;
734 733 extern int thread_queue_verify;
735 734
736 735 /*
737 736 * pthread_atfork() related data, used to store atfork handlers.
738 737 */
739 738 typedef struct atfork {
740 739 struct atfork *forw; /* forward pointer */
741 740 struct atfork *back; /* backward pointer */
742 741 void (*prepare)(void); /* pre-fork handler */
743 742 void (*parent)(void); /* post-fork parent handler */
744 743 void (*child)(void); /* post-fork child handler */
745 744 } atfork_t;
746 745
747 746 /*
748 747 * Element in the table and in the list of registered process
749 748 * robust locks. We keep track of these to make sure that we
750 749 * only call ___lwp_mutex_register() once for each such lock
751 750 * after it is first mapped in (or newly mapped in).
752 751 */
753 752 typedef struct robust {
754 753 struct robust *robust_next; /* hash table list */
755 754 struct robust *robust_list; /* global list */
756 755 mutex_t *robust_lock;
757 756 } robust_t;
758 757
759 758 /*
760 759 * Invalid address, used to mark an unused element in the hash table.
761 760 */
762 761 #define INVALID_ADDR ((void *)(uintptr_t)(-1L))
763 762
764 763 /*
765 764 * Parameters of the lock registration hash table.
766 765 */
767 766 #define LOCKSHIFT 15 /* number of hashing bits */
768 767 #define LOCKHASHSZ (1 << LOCKSHIFT) /* power of 2 (1<<15 == 32K) */
769 768 #define LOCK_HASH(addr) (uint_t) \
770 769 ((((uintptr_t)(addr) >> 3) \
771 770 ^ ((uintptr_t)(addr) >> (LOCKSHIFT + 3))) \
772 771 & (LOCKHASHSZ - 1))
773 772
774 773 /*
775 774 * Make our hot locks reside on private cache lines (64 bytes).
776 775 */
777 776 typedef struct {
778 777 mutex_t pad_lock;
779 778 char pad_pad[64 - sizeof (mutex_t)];
780 779 } pad_lock_t;
781 780
782 781 /*
783 782 * Make our semi-hot locks reside on semi-private cache lines (32 bytes).
784 783 */
785 784 typedef struct {
786 785 mutex_t pad_lock;
787 786 char pad_pad[32 - sizeof (mutex_t)];
788 787 } pad32_lock_t;
789 788
790 789 /*
791 790 * The threads hash table is used for fast lookup and locking of an active
792 791 * thread structure (ulwp_t) given a thread-id. It is an N-element array of
793 792 * thr_hash_table_t structures, where N == 1 before the main thread creates
794 793 * the first additional thread and N == 1024 afterwards. Each element of the
795 794 * table is 64 bytes in size and alignment to reduce cache conflicts.
796 795 */
797 796 typedef struct {
798 797 mutex_t hash_lock; /* lock per bucket */
799 798 cond_t hash_cond; /* convar per bucket */
800 799 ulwp_t *hash_bucket; /* hash bucket points to the list of ulwps */
801 800 char hash_pad[64 - /* pad out to 64 bytes */
802 801 (sizeof (mutex_t) + sizeof (cond_t) + sizeof (ulwp_t *))];
803 802 } thr_hash_table_t;
804 803
805 804 #ifdef _SYSCALL32
806 805 typedef struct {
807 806 mutex_t hash_lock;
808 807 cond_t hash_cond;
809 808 caddr32_t hash_bucket;
810 809 char hash_pad[64 -
811 810 (sizeof (mutex_t) + sizeof (cond_t) + sizeof (caddr32_t))];
812 811 } thr_hash_table32_t;
813 812 #endif /* _SYSCALL32 */
814 813
815 814
816 815 /*
817 816 * siguaction members have 128-byte size and 64-byte alignment.
818 817 * We know that sizeof (struct sigaction) is 32 bytes for both
819 818 * _ILP32 and _LP64 and that sizeof (rwlock_t) is 64 bytes.
820 819 */
821 820 typedef struct {
822 821 rwlock_t sig_lock;
823 822 struct sigaction sig_uaction;
824 823 char sig_pad[128 - sizeof (rwlock_t) - sizeof (struct sigaction)];
825 824 } siguaction_t;
826 825
827 826 #ifdef _SYSCALL32
828 827 typedef struct {
829 828 rwlock_t sig_lock;
830 829 struct sigaction32 sig_uaction;
831 830 char sig_pad[128 - sizeof (rwlock_t) - sizeof (struct sigaction32)];
832 831 } siguaction32_t;
833 832 #endif /* _SYSCALL32 */
834 833
835 834
836 835 /*
837 836 * Bucket structures, used by lmalloc()/lfree().
838 837 * See port/threads/alloc.c for details.
839 838 * A bucket's size and alignment is 64 bytes.
840 839 */
841 840 typedef struct {
842 841 mutex_t bucket_lock; /* protects the free list allocations */
843 842 void *free_list; /* LIFO list of blocks to allocate/free */
844 843 size_t chunks; /* number of 64K blocks mmap()ed last time */
845 844 char pad64[64 - /* pad out to 64 bytes */
846 845 (sizeof (mutex_t) + sizeof (void *) + sizeof (size_t))];
847 846 } bucket_t;
848 847
849 848 #ifdef _SYSCALL32
850 849 typedef struct {
851 850 mutex_t bucket_lock;
852 851 caddr32_t free_list;
853 852 size32_t chunks;
854 853 char pad64[64 - /* pad out to 64 bytes */
855 854 (sizeof (mutex_t) + sizeof (caddr32_t) + sizeof (size32_t))];
856 855 } bucket32_t;
857 856 #endif /* _SYSCALL32 */
858 857
859 858 #define NBUCKETS 10 /* sizes ranging from 64 to 32768 */
860 859
861 860
862 861 /*
863 862 * atexit() data structures.
864 863 * See port/gen/atexit.c for details.
865 864 */
866 865 typedef void (*_exithdlr_func_t) (void*);
867 866
868 867 typedef struct _exthdlr {
869 868 struct _exthdlr *next; /* next in handler list */
870 869 _exithdlr_func_t hdlr; /* handler itself */
871 870 void *arg; /* argument to handler */
872 871 void *dso; /* DSO associated with handler */
873 872 } _exthdlr_t;
874 873
875 874 typedef struct {
876 875 mutex_t exitfns_lock;
877 876 _exthdlr_t *head;
878 877 /*
879 878 * exit_frame_monitor is part of a private contract between libc and
880 879 * the Sun C++ runtime.
881 880 *
882 881 * It should be NULL until exit() is called, and thereafter hold the
883 882 * frame pointer of the function implementing our exit processing.
884 883 */
885 884 void *exit_frame_monitor;
886 885 char exit_pad[64 - /* pad out to 64 bytes */
887 886 (sizeof (mutex_t) + sizeof (_exthdlr_t *) + sizeof (void *))];
888 887 } atexit_root_t;
889 888
890 889 #ifdef _SYSCALL32
891 890 typedef struct {
892 891 mutex_t exitfns_lock;
893 892 caddr32_t head;
894 893 caddr32_t exit_frame_monitor;
895 894 char exit_pad[64 - /* pad out to 64 bytes */
896 895 (sizeof (mutex_t) + sizeof (caddr32_t) + sizeof (caddr32_t))];
897 896 } atexit_root32_t;
898 897 #endif /* _SYSCALL32 */
899 898
900 899 /*
901 900 * at_quick_exit() and quick_exit() data structures. The ISO/IEC C11 odd
902 901 * siblings of atexit()
903 902 */
904 903 typedef void (*_quick_exithdlr_func_t)(void);
905 904
906 905 typedef struct _qexthdlr {
907 906 struct _qexthdlr *next; /* next in handler list */
908 907 _quick_exithdlr_func_t hdlr; /* handler itself */
909 908 } _qexthdlr_t;
910 909
911 910 /*
912 911 * We add a pad on 32-bit systems to allow us to always have the structure size
913 912 * be 32-bytes which helps us deal with the compiler's alignment when building
914 913 * in ILP32 / LP64 systems.
915 914 */
916 915 typedef struct {
917 916 mutex_t exitfns_lock;
918 917 _qexthdlr_t *head;
919 918 #if !defined(_LP64)
920 919 uint32_t pad;
921 920 #endif
922 921 } quickexit_root_t;
923 922
924 923 #ifdef _SYSCALL32
925 924 typedef struct {
926 925 mutex_t exitfns_lock;
927 926 caddr32_t head;
928 927 uint32_t pad;
929 928 } quickexit_root32_t;
930 929 #endif /* _SYSCALL32 */
931 930
932 931 /*
933 932 * This is data that is global to all link maps (uberdata, aka super-global).
934 933 * Note: When changing this, please be sure to keep the 32-bit variant of
935 934 * this in sync. (see uberdata32_t below)
936 935 */
937 936 typedef struct uberdata {
938 937 pad_lock_t _link_lock;
939 938 pad_lock_t _ld_lock;
940 939 pad_lock_t _fork_lock;
941 940 pad_lock_t _atfork_lock;
942 941 pad32_lock_t _callout_lock;
943 942 pad32_lock_t _tdb_hash_lock;
944 943 tdb_sync_stats_t tdb_hash_lock_stats;
945 944 siguaction_t siguaction[NSIG];
946 945 bucket_t bucket[NBUCKETS];
947 946 atexit_root_t atexit_root;
948 947 quickexit_root_t quickexit_root;
949 948 tsd_metadata_t tsd_metadata;
950 949 tls_metadata_t tls_metadata;
951 950 /*
952 951 * Every object before this point has size and alignment of 64 bytes.
953 952 * Don't add any other type of data before this point.
954 953 */
955 954 char primary_map; /* set when primary link map is initialized */
956 955 char bucket_init; /* set when bucket[NBUCKETS] is initialized */
957 956 char pad[2];
958 957 uberflags_t uberflags;
959 958 queue_head_t *queue_head;
960 959 thr_hash_table_t *thr_hash_table;
961 960 uint_t hash_size; /* # of entries in thr_hash_table[] */
962 961 uint_t hash_mask; /* hash_size - 1 */
963 962 ulwp_t *ulwp_one; /* main thread */
964 963 ulwp_t *all_lwps; /* circular ul_forw/ul_back list of live lwps */
965 964 ulwp_t *all_zombies; /* circular ul_forw/ul_back list of zombies */
966 965 int nthreads; /* total number of live threads/lwps */
967 966 int nzombies; /* total number of zombie threads */
968 967 int ndaemons; /* total number of THR_DAEMON threads/lwps */
969 968 pid_t pid; /* the current process's pid */
970 969 void (*sigacthandler)(int, siginfo_t *, void *);
971 970 ulwp_t *lwp_stacks;
972 971 ulwp_t *lwp_laststack;
973 972 int nfreestack;
974 973 int thread_stack_cache;
975 974 ulwp_t *ulwp_freelist;
976 975 ulwp_t *ulwp_lastfree;
977 976 ulwp_t *ulwp_replace_free;
978 977 ulwp_t *ulwp_replace_last;
979 978 atfork_t *atforklist; /* circular Q for fork handlers */
980 979 robust_t **robustlocks; /* table of registered robust locks */
981 980 robust_t *robustlist; /* list of registered robust locks */
982 981 char *progname; /* the basename of the program, from argv[0] */
983 982 void *ub_comm_page; /* arch-specific comm page of kernel data */
984 983 struct uberdata **tdb_bootstrap;
985 984 tdb_t tdb; /* thread debug interfaces (for libc_db) */
986 985 } uberdata_t;
987 986
988 987 #define link_lock _link_lock.pad_lock
989 988 #define ld_lock _ld_lock.pad_lock
990 989 #define fork_lock _fork_lock.pad_lock
991 990 #define atfork_lock _atfork_lock.pad_lock
992 991 #define callout_lock _callout_lock.pad_lock
993 992 #define tdb_hash_lock _tdb_hash_lock.pad_lock
994 993
995 994 #pragma align 64(__uberdata)
996 995 extern uberdata_t __uberdata;
997 996 extern uberdata_t **__tdb_bootstrap; /* known to libc_db and mdb */
998 997 extern int primary_link_map;
999 998
1000 999 #define ulwp_mutex(ulwp, udp) \
1001 1000 (&(udp)->thr_hash_table[(ulwp)->ul_ix].hash_lock)
1002 1001 #define ulwp_condvar(ulwp, udp) \
1003 1002 (&(udp)->thr_hash_table[(ulwp)->ul_ix].hash_cond)
1004 1003
1005 1004 /*
1006 1005 * Grab and release the hash table lock for the specified lwp.
1007 1006 */
1008 1007 #define ulwp_lock(ulwp, udp) lmutex_lock(ulwp_mutex(ulwp, udp))
1009 1008 #define ulwp_unlock(ulwp, udp) lmutex_unlock(ulwp_mutex(ulwp, udp))
1010 1009
1011 1010 #ifdef _SYSCALL32 /* needed by libc_db */
1012 1011
1013 1012 typedef struct ulwp32 {
1014 1013 #if defined(__sparc)
1015 1014 uint32_t ul_dinstr; /* scratch space for dtrace */
1016 1015 uint32_t ul_padsparc0[15];
1017 1016 uint32_t ul_dsave; /* dtrace: save %g1, %g0, %sp */
1018 1017 uint32_t ul_drestore; /* dtrace: restore %g0, %g0, %g0 */
1019 1018 uint32_t ul_dftret; /* dtrace: return probe fasttrap */
1020 1019 uint32_t ul_dreturn; /* dtrace: return %o0 */
1021 1020 #endif
1022 1021 caddr32_t ul_self; /* pointer to self */
1023 1022 #if defined(__x86)
1024 1023 uint8_t ul_dinstr[40]; /* scratch space for dtrace */
1025 1024 #endif
1026 1025 caddr32_t ul_uberdata; /* uber (super-global) data */
1027 1026 tls32_t ul_tls; /* dynamic thread-local storage base */
1028 1027 caddr32_t ul_forw; /* forw, back all_lwps list, */
1029 1028 caddr32_t ul_back; /* protected by link_lock */
1030 1029 caddr32_t ul_next; /* list to keep track of stacks */
1031 1030 caddr32_t ul_hash; /* hash chain linked list */
1032 1031 caddr32_t ul_rval; /* return value from thr_exit() */
1033 1032 caddr32_t ul_stk; /* mapping base of the stack */
1034 1033 size32_t ul_mapsiz; /* mapping size of the stack */
1035 1034 size32_t ul_guardsize; /* normally _lpagesize */
1036 1035 caddr32_t ul_stktop; /* broken thr_stksegment() interface */
1037 1036 size32_t ul_stksiz; /* broken thr_stksegment() interface */
1038 1037 stack32_t ul_ustack; /* current stack boundaries */
1039 1038 int ul_ix; /* hash index */
1040 1039 lwpid_t ul_lwpid; /* thread id, aka the lwp id */
1041 1040 pri_t ul_pri; /* scheduling priority */
1042 1041 pri_t ul_epri; /* real-time ceiling priority */
1043 1042 char ul_policy; /* scheduling policy */
1044 1043 char ul_cid; /* scheduling class id */
1045 1044 union {
1046 1045 struct {
1047 1046 char cursig; /* deferred signal number */
1048 1047 char pleasestop; /* lwp requested to stop itself */
1049 1048 } s;
1050 1049 short curplease; /* for testing both at once */
1051 1050 } ul_cp;
1052 1051 char ul_stop; /* reason for stopping */
1053 1052 char ul_signalled; /* this lwp was cond_signal()d */
1054 1053 char ul_dead; /* this lwp has called thr_exit */
1055 1054 char ul_unwind; /* posix: unwind C++ stack */
1056 1055 char ul_detached; /* THR_DETACHED at thread_create() */
1057 1056 /* or pthread_detach() was called */
1058 1057 char ul_writer; /* sleeping in rw_wrlock() */
1059 1058 char ul_stopping; /* set by curthread: stopping self */
1060 1059 char ul_cancel_prologue; /* for _cancel_prologue() */
1061 1060 short ul_preempt; /* no_preempt()/preempt() */
1062 1061 short ul_savpreempt; /* pre-existing preempt value */
1063 1062 char ul_sigsuspend; /* thread is in sigsuspend/pollsys */
1064 1063 char ul_main; /* thread is the main thread */
1065 1064 char ul_fork; /* thread is performing a fork */
1066 1065 char ul_primarymap; /* primary link-map is initialized */
1067 1066 /* per-thread copies of the corresponding global variables */
1068 1067 uint8_t ul_max_spinners; /* thread_max_spinners */
1069 1068 char ul_door_noreserve; /* thread_door_noreserve */
1070 1069 char ul_queue_fifo; /* thread_queue_fifo */
1071 1070 char ul_cond_wait_defer; /* thread_cond_wait_defer */
1072 1071 char ul_error_detection; /* thread_error_detection */
1073 1072 char ul_async_safe; /* thread_async_safe */
1074 1073 char ul_rt; /* found on an RT queue */
1075 1074 char ul_rtqueued; /* was RT when queued */
1076 1075 char ul_misaligned; /* thread_locks_misaligned */
1077 1076 char ul_pad[3];
1078 1077 int ul_adaptive_spin; /* thread_adaptive_spin */
1079 1078 int ul_queue_spin; /* thread_queue_spin */
1080 1079 int ul_critical; /* non-zero == in a critical region */
1081 1080 int ul_sigdefer; /* non-zero == defer signals */
1082 1081 int ul_vfork; /* thread is the child of vfork() */
1083 1082 int ul_cancelable; /* _cancelon()/_canceloff() */
1084 1083 char ul_cancel_pending; /* pthread_cancel() was called */
1085 1084 char ul_cancel_disabled; /* PTHREAD_CANCEL_DISABLE */
1086 1085 char ul_cancel_async; /* PTHREAD_CANCEL_ASYNCHRONOUS */
1087 1086 char ul_save_async; /* saved copy of ul_cancel_async */
1088 1087 char ul_mutator; /* lwp is a mutator (java interface) */
1089 1088 char ul_created; /* created suspended */
1090 1089 char ul_replace; /* replacement; must be free()d */
1091 1090 uchar_t ul_nocancel; /* cancellation can't happen */
1092 1091 int ul_errno; /* per-thread errno */
1093 1092 caddr32_t ul_errnop; /* pointer to errno or self->ul_errno */
1094 1093 caddr32_t ul_clnup_hdr; /* head of cleanup handlers list */
1095 1094 caddr32_t ul_schedctl_called; /* ul_schedctl is set up */
1096 1095 caddr32_t ul_schedctl; /* schedctl data */
1097 1096 int ul_bindflags; /* bind_guard() interface to ld.so.1 */
1098 1097 uint_t ul_libc_locks; /* count of cancel_safe_mutex_lock()s */
1099 1098 caddr32_t ul_stsd; /* slow TLS for keys >= TSD_NFAST */
1100 1099 caddr32_t ul_ftsd[TSD_NFAST]; /* fast TLS for keys < TSD_NFAST */
1101 1100 td_evbuf32_t ul_td_evbuf; /* event buffer */
1102 1101 char ul_td_events_enable; /* event mechanism enabled */
1103 1102 char ul_sync_obj_reg; /* tdb_sync_obj_register() */
1104 1103 char ul_qtype; /* MX or CV */
1105 1104 char ul_cv_wake; /* != 0: just wake up, don't requeue */
1106 1105 int ul_rtld; /* thread is running inside ld.so.1 */
1107 1106 int ul_usropts; /* flags given to thr_create() */
1108 1107 caddr32_t ul_startpc; /* start func (thr_create()) */
1109 1108 caddr32_t ul_startarg; /* argument for start function */
1110 1109 caddr32_t ul_wchan; /* synch object when sleeping */
1111 1110 caddr32_t ul_link; /* sleep queue link */
1112 1111 caddr32_t ul_sleepq; /* sleep queue thread is waiting on */
1113 1112 caddr32_t ul_cvmutex; /* mutex dropped when waiting on a cv */
1114 1113 caddr32_t ul_mxchain; /* chain of owned ceiling mutexes */
1115 1114 int ul_save_state; /* bind_guard() interface to ld.so.1 */
1116 1115 uint_t ul_rdlockcnt; /* # entries in ul_readlock array */
1117 1116 /* 0 means there is but a single entry */
1118 1117 union { /* single entry or pointer to array */
1119 1118 readlock32_t single;
1120 1119 caddr32_t array;
1121 1120 } ul_readlock;
1122 1121 uint_t ul_heldlockcnt; /* # entries in ul_heldlocks array */
1123 1122 /* 0 means there is but a single entry */
1124 1123 union { /* single entry or pointer to array */
1125 1124 caddr32_t single;
1126 1125 caddr32_t array;
1127 1126 } ul_heldlocks;
1128 1127 /* PROBE_SUPPORT begin */
1129 1128 caddr32_t ul_tpdp;
1130 1129 /* PROBE_SUPPORT end */
1131 1130 caddr32_t ul_siglink; /* pointer to previous context */
1132 1131 uint_t ul_spin_lock_spin; /* spin lock statistics */
1133 1132 uint_t ul_spin_lock_spin2;
1134 1133 uint_t ul_spin_lock_sleep;
1135 1134 uint_t ul_spin_lock_wakeup;
1136 1135 queue_root32_t ul_queue_root; /* root of a sleep queue */
1137 1136 id_t ul_rtclassid; /* real-time class id */
1138 1137 uint_t ul_pilocks; /* count of PI locks held */
1139 1138 /* the following members *must* be last in the structure */
1140 1139 /* they are discarded when ulwp is replaced on thr_exit() */
1141 1140 sigset_t ul_sigmask; /* thread's current signal mask */
1142 1141 sigset_t ul_tmpmask; /* signal mask for sigsuspend/pollsys */
1143 1142 siginfo32_t ul_siginfo; /* deferred siginfo */
1144 1143 mutex_t ul_spinlock; /* used when suspending/continuing */
1145 1144 fpuenv32_t ul_fpuenv; /* floating point state */
1146 1145 caddr32_t ul_sp; /* stack pointer when blocked */
1147 1146 #if defined(sparc)
1148 1147 caddr32_t ul_unwind_ret; /* used only by _ex_clnup_handler() */
1149 1148 #endif
1150 1149 tumem32_t ul_tmem; /* used only by umem */
1151 1150 } ulwp32_t;
1152 1151
1153 1152 #define REPLACEMENT_SIZE32 ((size_t)&((ulwp32_t *)NULL)->ul_sigmask)
1154 1153
1155 1154 typedef struct uberdata32 {
1156 1155 pad_lock_t _link_lock;
1157 1156 pad_lock_t _ld_lock;
1158 1157 pad_lock_t _fork_lock;
1159 1158 pad_lock_t _atfork_lock;
1160 1159 pad32_lock_t _callout_lock;
1161 1160 pad32_lock_t _tdb_hash_lock;
1162 1161 tdb_sync_stats_t tdb_hash_lock_stats;
1163 1162 siguaction32_t siguaction[NSIG];
1164 1163 bucket32_t bucket[NBUCKETS];
1165 1164 atexit_root32_t atexit_root;
1166 1165 quickexit_root32_t quickexit_root;
1167 1166 tsd_metadata32_t tsd_metadata;
1168 1167 tls_metadata32_t tls_metadata;
1169 1168 char primary_map;
1170 1169 char bucket_init;
1171 1170 char pad[2];
1172 1171 uberflags_t uberflags;
1173 1172 caddr32_t queue_head;
1174 1173 caddr32_t thr_hash_table;
1175 1174 uint_t hash_size;
1176 1175 uint_t hash_mask;
1177 1176 caddr32_t ulwp_one;
1178 1177 caddr32_t all_lwps;
1179 1178 caddr32_t all_zombies;
1180 1179 int nthreads;
1181 1180 int nzombies;
1182 1181 int ndaemons;
1183 1182 int pid;
1184 1183 caddr32_t sigacthandler;
1185 1184 caddr32_t lwp_stacks;
1186 1185 caddr32_t lwp_laststack;
1187 1186 int nfreestack;
1188 1187 int thread_stack_cache;
1189 1188 caddr32_t ulwp_freelist;
1190 1189 caddr32_t ulwp_lastfree;
1191 1190 caddr32_t ulwp_replace_free;
1192 1191 caddr32_t ulwp_replace_last;
1193 1192 caddr32_t atforklist;
1194 1193 caddr32_t robustlocks;
1195 1194 caddr32_t robustlist;
1196 1195 caddr32_t progname;
1197 1196 caddr32_t ub_comm_page;
1198 1197 caddr32_t tdb_bootstrap;
1199 1198 tdb32_t tdb;
1200 1199 } uberdata32_t;
1201 1200
1202 1201 #endif /* _SYSCALL32 */
1203 1202
1204 1203 /* ul_stop values */
1205 1204 #define TSTP_REGULAR 0x01 /* Stopped by thr_suspend() */
1206 1205 #define TSTP_MUTATOR 0x08 /* stopped by thr_suspend_*mutator*() */
1207 1206 #define TSTP_FORK 0x20 /* stopped by suspend_fork() */
1208 1207
1209 1208 /*
1210 1209 * Implementation-specific attribute types for pthread_mutexattr_init() etc.
1211 1210 */
1212 1211
1213 1212 typedef struct _cvattr {
1214 1213 int pshared;
1215 1214 clockid_t clockid;
1216 1215 } cvattr_t;
1217 1216
1218 1217 typedef struct _mattr {
1219 1218 int pshared;
1220 1219 int protocol;
1221 1220 int prioceiling;
1222 1221 int type;
1223 1222 int robustness;
1224 1223 } mattr_t;
1225 1224
1226 1225 typedef struct _thrattr {
1227 1226 size_t stksize;
1228 1227 void *stkaddr;
1229 1228 int detachstate;
1230 1229 int daemonstate;
1231 1230 int scope;
1232 1231 int prio;
1233 1232 int policy;
1234 1233 int inherit;
1235 1234 size_t guardsize;
1236 1235 } thrattr_t;
1237 1236
1238 1237 typedef struct _rwlattr {
1239 1238 int pshared;
1240 1239 } rwlattr_t;
1241 1240
1242 1241 /* _curthread() is inline for speed */
1243 1242 extern ulwp_t *_curthread(void);
1244 1243 #define curthread (_curthread())
1245 1244
1246 1245 /* this version (also inline) can be tested for NULL */
1247 1246 extern ulwp_t *__curthread(void);
1248 1247
1249 1248 /* get the current stack pointer (also inline) */
1250 1249 extern greg_t stkptr(void);
1251 1250
1252 1251 /*
1253 1252 * Suppress __attribute__((...)) if we are not compiling with gcc
1254 1253 */
1255 1254 #if !defined(__GNUC__)
1256 1255 #define __attribute__(string)
1257 1256 #endif
1258 1257
1259 1258 /* Fetch the dispatch (kernel) priority of a thread */
1260 1259 #define real_priority(ulwp) \
1261 1260 ((ulwp)->ul_schedctl? (ulwp)->ul_schedctl->sc_priority : 0)
1262 1261
1263 1262 /*
1264 1263 * Implementation functions. Not visible outside of the library itself.
1265 1264 */
1266 1265 extern int __nanosleep(const timespec_t *, timespec_t *);
1267 1266 extern void getgregs(ulwp_t *, gregset_t);
1268 1267 extern void setgregs(ulwp_t *, gregset_t);
1269 1268 extern void thr_panic(const char *);
1270 1269 #pragma rarely_called(thr_panic)
1271 1270 extern void mutex_panic(mutex_t *, const char *);
1272 1271 #pragma rarely_called(mutex_panic)
1273 1272 extern ulwp_t *find_lwp(thread_t);
1274 1273 extern void finish_init(void);
1275 1274 extern void update_sched(ulwp_t *);
1276 1275 extern void queue_alloc(void);
1277 1276 extern void tmem_exit(void);
1278 1277 extern void tsd_exit(void);
1279 1278 extern void tsd_free(ulwp_t *);
1280 1279 extern void tls_setup(void);
1281 1280 extern void tls_exit(void);
1282 1281 extern void tls_free(ulwp_t *);
1283 1282 extern void rwl_free(ulwp_t *);
1284 1283 extern void heldlock_exit(void);
1285 1284 extern void heldlock_free(ulwp_t *);
1286 1285 extern void sigacthandler(int, siginfo_t *, void *);
1287 1286 extern void signal_init(void);
1288 1287 extern int sigequalset(const sigset_t *, const sigset_t *);
1289 1288 extern void mutex_setup(void);
1290 1289 extern void take_deferred_signal(int);
1291 1290 extern void *setup_top_frame(void *, size_t, ulwp_t *);
1292 1291 extern int setup_context(ucontext_t *, void *(*func)(ulwp_t *),
1293 1292 ulwp_t *ulwp, caddr_t stk, size_t stksize);
1294 1293 extern volatile sc_shared_t *setup_schedctl(void);
1295 1294 extern void *lmalloc(size_t);
1296 1295 extern void lfree(void *, size_t);
1297 1296 extern void *libc_malloc(size_t);
1298 1297 extern void *libc_realloc(void *, size_t);
1299 1298 extern void libc_free(void *);
1300 1299 extern char *libc_strdup(const char *);
1301 1300 extern void ultos(uint64_t, int, char *);
1302 1301 extern void lock_error(const mutex_t *, const char *, void *, const char *);
1303 1302 extern void rwlock_error(const rwlock_t *, const char *, const char *);
1304 1303 extern void thread_error(const char *);
1305 1304 extern void grab_assert_lock(void);
1306 1305 extern void dump_queue_statistics(void);
1307 1306 extern void collect_queue_statistics(void);
1308 1307 extern void record_spin_locks(ulwp_t *);
1309 1308 extern void remember_lock(mutex_t *);
1310 1309 extern void forget_lock(mutex_t *);
1311 1310 extern void register_lock(mutex_t *);
1312 1311 extern void unregister_locks(void);
1313 1312 #if defined(__sparc)
1314 1313 extern void _flush_windows(void);
1315 1314 #else
1316 1315 #define _flush_windows()
1317 1316 #endif
1318 1317 extern void set_curthread(void *);
1319 1318
1320 1319 /*
1321 1320 * Utility function used when waking up many threads (more than MAXLWPS)
1322 1321 * all at once. See mutex_wakeup_all(), cond_broadcast(), and rw_unlock().
1323 1322 */
1324 1323 #define MAXLWPS 128 /* max remembered lwpids before overflow */
1325 1324 #define NEWLWPS 2048 /* max remembered lwpids at first overflow */
1326 1325 extern lwpid_t *alloc_lwpids(lwpid_t *, int *, int *);
1327 1326
1328 1327 /* enter a critical section */
1329 1328 #define enter_critical(self) (self->ul_critical++)
1330 1329
1331 1330 /* exit a critical section, take deferred actions if necessary */
1332 1331 extern void do_exit_critical(void);
1333 1332 #define exit_critical(self) \
1334 1333 (void) (self->ul_critical--, \
1335 1334 ((self->ul_curplease && self->ul_critical == 0)? \
1336 1335 (do_exit_critical(), 0) : 0))
1337 1336
1338 1337 /*
1339 1338 * Like enter_critical()/exit_critical() but just for deferring signals.
1340 1339 * Unlike enter_critical()/exit_critical(), ul_sigdefer may be set while
1341 1340 * calling application functions like constructors and destructors.
1342 1341 * Care must be taken if the application function attempts to set
1343 1342 * the signal mask while a deferred signal is present; the setting
1344 1343 * of the signal mask must also be deferred.
1345 1344 */
1346 1345 #define sigoff(self) (self->ul_sigdefer++)
1347 1346 #define sigon(self) \
1348 1347 (void) ((--self->ul_sigdefer == 0 && \
1349 1348 self->ul_curplease && self->ul_critical == 0)? \
1350 1349 (do_exit_critical(), 0) : 0)
1351 1350
1352 1351 /* these are exported functions */
1353 1352 extern void _sigoff(void);
1354 1353 extern void _sigon(void);
1355 1354
1356 1355 #define sigorset(s1, s2) \
1357 1356 (((s1)->__sigbits[0] |= (s2)->__sigbits[0]), \
1358 1357 ((s1)->__sigbits[1] |= (s2)->__sigbits[1]), \
1359 1358 ((s1)->__sigbits[2] |= (s2)->__sigbits[2]), \
1360 1359 ((s1)->__sigbits[3] |= (s2)->__sigbits[3]))
1361 1360
1362 1361 #define sigandset(s1, s2) \
1363 1362 (((s1)->__sigbits[0] &= (s2)->__sigbits[0]), \
1364 1363 ((s1)->__sigbits[1] &= (s2)->__sigbits[1]), \
1365 1364 ((s1)->__sigbits[2] &= (s2)->__sigbits[2]), \
1366 1365 ((s1)->__sigbits[3] &= (s2)->__sigbits[3]))
1367 1366
1368 1367 #define sigdiffset(s1, s2) \
1369 1368 (((s1)->__sigbits[0] &= ~(s2)->__sigbits[0]), \
1370 1369 ((s1)->__sigbits[1] &= ~(s2)->__sigbits[1]), \
1371 1370 ((s1)->__sigbits[2] &= ~(s2)->__sigbits[2]), \
1372 1371 ((s1)->__sigbits[3] &= ~(s2)->__sigbits[3]))
1373 1372
1374 1373 #define delete_reserved_signals(s) \
1375 1374 (((s)->__sigbits[0] &= MASKSET0), \
1376 1375 ((s)->__sigbits[1] &= (MASKSET1 & ~SIGMASK(SIGCANCEL))),\
1377 1376 ((s)->__sigbits[2] &= MASKSET2), \
1378 1377 ((s)->__sigbits[3] &= MASKSET3))
1379 1378
1380 1379 extern void block_all_signals(ulwp_t *self);
1381 1380
1382 1381 /*
1383 1382 * When restoring the signal mask after having previously called
1384 1383 * block_all_signals(), if we have a deferred signal present then
1385 1384 * do nothing other than ASSERT() that we are in a critical region.
1386 1385 * The signal mask will be set when we emerge from the critical region
1387 1386 * and call take_deferred_signal(). There is no race condition here
1388 1387 * because the kernel currently has all signals blocked for this thread.
1389 1388 */
1390 1389 #define restore_signals(self) \
1391 1390 ((void) ((self)->ul_cursig? \
1392 1391 (ASSERT((self)->ul_critical + (self)->ul_sigdefer != 0), 0) : \
1393 1392 __lwp_sigmask(SIG_SETMASK, &(self)->ul_sigmask)))
1394 1393
1395 1394 extern void set_cancel_pending_flag(ulwp_t *, int);
1396 1395 extern void set_cancel_eintr_flag(ulwp_t *);
1397 1396 extern void set_parking_flag(ulwp_t *, int);
1398 1397 extern int cancel_active(void);
1399 1398
1400 1399 extern void *_thrp_setup(ulwp_t *);
1401 1400 extern void _fpinherit(ulwp_t *);
1402 1401 extern void _lwp_start(void);
1403 1402 extern void _lwp_terminate(void);
1404 1403 extern void lmutex_lock(mutex_t *);
1405 1404 extern void lmutex_unlock(mutex_t *);
1406 1405 extern void lrw_rdlock(rwlock_t *);
1407 1406 extern void lrw_wrlock(rwlock_t *);
1408 1407 extern void lrw_unlock(rwlock_t *);
1409 1408 extern void sig_mutex_lock(mutex_t *);
1410 1409 extern void sig_mutex_unlock(mutex_t *);
1411 1410 extern int sig_mutex_trylock(mutex_t *);
1412 1411 extern int sig_cond_wait(cond_t *, mutex_t *);
1413 1412 extern int sig_cond_reltimedwait(cond_t *, mutex_t *, const timespec_t *);
1414 1413 extern void cancel_safe_mutex_lock(mutex_t *);
1415 1414 extern void cancel_safe_mutex_unlock(mutex_t *);
1416 1415 extern int cancel_safe_mutex_trylock(mutex_t *);
1417 1416 extern void _prefork_handler(void);
1418 1417 extern void _postfork_parent_handler(void);
1419 1418 extern void _postfork_child_handler(void);
1420 1419 extern void postfork1_child(void);
1421 1420 extern void postfork1_child_aio(void);
1422 1421 extern void postfork1_child_sigev_aio(void);
1423 1422 extern void postfork1_child_sigev_mq(void);
1424 1423 extern void postfork1_child_sigev_timer(void);
1425 1424 extern void postfork1_child_tpool(void);
1426 1425 extern void fork_lock_enter(void);
1427 1426 extern void fork_lock_exit(void);
1428 1427 extern void suspend_fork(void);
1429 1428 extern void continue_fork(int);
1430 1429 extern void do_sigcancel(void);
1431 1430 extern void setup_cancelsig(int);
1432 1431 extern void init_sigev_thread(void);
1433 1432 extern void init_aio(void);
1434 1433 extern void init_progname(void);
1435 1434 extern void _cancelon(void);
1436 1435 extern void _canceloff(void);
1437 1436 extern void _canceloff_nocancel(void);
1438 1437 extern void _cancel_prologue(void);
1439 1438 extern void _cancel_epilogue(void);
1440 1439 extern void no_preempt(ulwp_t *);
1441 1440 extern void preempt(ulwp_t *);
1442 1441 extern void _thrp_unwind(void *);
1443 1442
1444 1443 extern pid_t __forkx(int);
1445 1444 extern pid_t __forkallx(int);
1446 1445 extern int __open(const char *, int, mode_t);
1447 1446 extern int __open64(const char *, int, mode_t);
1448 1447 extern int __openat(int, const char *, int, mode_t);
1449 1448 extern int __openat64(int, const char *, int, mode_t);
1450 1449 extern int __close(int);
1451 1450 extern ssize_t __read(int, void *, size_t);
1452 1451 extern ssize_t __write(int, const void *, size_t);
1453 1452 extern int __fcntl(int, int, ...);
1454 1453 extern int __lwp_continue(lwpid_t);
1455 1454 extern int __lwp_create(ucontext_t *, uint_t, lwpid_t *);
1456 1455 extern int ___lwp_suspend(lwpid_t);
1457 1456 extern int lwp_wait(lwpid_t, lwpid_t *);
1458 1457 extern int __lwp_wait(lwpid_t, lwpid_t *);
1459 1458 extern int __lwp_detach(lwpid_t);
1460 1459 extern sc_shared_t *__schedctl(void);
1461 1460
1462 1461 /* actual system call traps */
1463 1462 extern int __setcontext(const ucontext_t *);
1464 1463 extern int __getcontext(ucontext_t *);
1465 1464 extern int __clock_gettime(clockid_t, timespec_t *);
1466 1465 extern void abstime_to_reltime(clockid_t, const timespec_t *, timespec_t *);
1467 1466 extern void hrt2ts(hrtime_t, timespec_t *);
1468 1467
1469 1468 extern int __sigaction(int, const struct sigaction *, struct sigaction *);
1470 1469 extern int __sigprocmask(int, const sigset_t *, sigset_t *);
1471 1470 extern int __lwp_sigmask(int, const sigset_t *);
1472 1471 extern void __sighndlr(int, siginfo_t *, ucontext_t *, void (*)());
1473 1472 extern caddr_t __sighndlrend;
1474 1473 #pragma unknown_control_flow(__sighndlr)
1475 1474
1476 1475 /* belongs in <pthread.h> */
1477 1476 #define PTHREAD_CREATE_DAEMON_NP 0x100 /* = THR_DAEMON */
1478 1477 #define PTHREAD_CREATE_NONDAEMON_NP 0
1479 1478 extern int pthread_attr_setdaemonstate_np(pthread_attr_t *, int);
1480 1479 extern int pthread_attr_getdaemonstate_np(const pthread_attr_t *, int *);
1481 1480
1482 1481 extern int mutex_held(mutex_t *);
1483 1482 extern int mutex_lock_internal(mutex_t *, timespec_t *, int);
1484 1483 extern int mutex_unlock_internal(mutex_t *, int);
1485 1484
1486 1485 /* not cancellation points: */
1487 1486 extern int __cond_wait(cond_t *, mutex_t *);
1488 1487 extern int __cond_timedwait(cond_t *, mutex_t *, const timespec_t *);
1489 1488 extern int __cond_reltimedwait(cond_t *, mutex_t *, const timespec_t *);
1490 1489
1491 1490 extern int rw_read_held(rwlock_t *);
1492 1491 extern int rw_write_held(rwlock_t *);
1493 1492
1494 1493 extern int _thrp_create(void *, size_t, void *(*)(void *), void *, long,
1495 1494 thread_t *, size_t);
1496 1495 extern int _thrp_suspend(thread_t, uchar_t);
1497 1496 extern int _thrp_continue(thread_t, uchar_t);
1498 1497
1499 1498 extern void _thrp_terminate(void *);
1500 1499 extern void _thrp_exit(void);
1501 1500
1502 1501 extern const pcclass_t *get_info_by_class(id_t);
1503 1502 extern const pcclass_t *get_info_by_policy(int);
1504 1503 extern const thrattr_t *def_thrattr(void);
1505 1504 extern id_t setparam(idtype_t, id_t, int, int);
1506 1505 extern id_t setprio(idtype_t, id_t, int, int *);
1507 1506 extern id_t getparam(idtype_t, id_t, int *, struct sched_param *);
1508 1507
1509 1508 /*
1510 1509 * System call wrappers (direct interfaces to the kernel)
1511 1510 */
1512 1511 extern int ___lwp_mutex_register(mutex_t *, mutex_t **);
1513 1512 extern int ___lwp_mutex_trylock(mutex_t *, ulwp_t *);
1514 1513 extern int ___lwp_mutex_timedlock(mutex_t *, timespec_t *, ulwp_t *);
1515 1514 extern int ___lwp_mutex_unlock(mutex_t *);
1516 1515 extern int ___lwp_mutex_wakeup(mutex_t *, int);
1517 1516 extern int ___lwp_cond_wait(cond_t *, mutex_t *, timespec_t *, int);
1518 1517 extern int ___lwp_sema_timedwait(lwp_sema_t *, timespec_t *, int);
1519 1518 extern int __lwp_rwlock_rdlock(rwlock_t *, timespec_t *);
1520 1519 extern int __lwp_rwlock_wrlock(rwlock_t *, timespec_t *);
1521 1520 extern int __lwp_rwlock_tryrdlock(rwlock_t *);
1522 1521 extern int __lwp_rwlock_trywrlock(rwlock_t *);
1523 1522 extern int __lwp_rwlock_unlock(rwlock_t *);
1524 1523 extern int __lwp_park(timespec_t *, lwpid_t);
1525 1524 extern int __lwp_unpark(lwpid_t);
1526 1525 extern int __lwp_unpark_all(lwpid_t *, int);
1527 1526 #if defined(__x86)
1528 1527 extern int ___lwp_private(int, int, void *);
1529 1528 #endif /* __x86 */
1530 1529
1531 1530 /*
1532 1531 * inlines
1533 1532 */
1534 1533 extern int set_lock_byte(volatile uint8_t *);
1535 1534 extern uint32_t atomic_swap_32(volatile uint32_t *, uint32_t);
1536 1535 extern uint32_t atomic_cas_32(volatile uint32_t *, uint32_t, uint32_t);
1537 1536 extern void atomic_inc_32(volatile uint32_t *);
1538 1537 extern void atomic_dec_32(volatile uint32_t *);
1539 1538 extern void atomic_and_32(volatile uint32_t *, uint32_t);
1540 1539 extern void atomic_or_32(volatile uint32_t *, uint32_t);
1541 1540 #if defined(__sparc)
1542 1541 extern ulong_t caller(void);
1543 1542 extern ulong_t getfp(void);
1544 1543 #endif /* __sparc */
1545 1544
1546 1545 #include "thr_inlines.h"
1547 1546
1548 1547 #endif /* _THR_UBERDATA_H */
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