1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 23 /* 24 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 */ 27 28 #ifndef _THR_UBERDATA_H 29 #define _THR_UBERDATA_H 30 31 #pragma ident "%Z%%M% %I% %E% SMI" 32 33 #include <stdlib.h> 34 #include <unistd.h> 35 #include <sys/types.h> 36 #include <fcntl.h> 37 #include <string.h> 38 #include <signal.h> 39 #include <ucontext.h> 40 #include <thread.h> 41 #include <pthread.h> 42 #include <link.h> 43 #include <sys/resource.h> 44 #include <sys/lwp.h> 45 #include <errno.h> 46 #include <sys/asm_linkage.h> 47 #include <sys/regset.h> 48 #include <sys/fcntl.h> 49 #include <sys/mman.h> 50 #include <synch.h> 51 #include <door.h> 52 #include <limits.h> 53 #include <sys/synch32.h> 54 #include <schedctl.h> 55 #include <sys/priocntl.h> 56 #include <thread_db.h> 57 #include "libc_int.h" 58 #include "tdb_agent.h" 59 60 /* 61 * This is an implementation-specific include file for threading support. 62 * It is not to be seen by the clients of the library. 63 * 64 * This file also describes uberdata in libc. 65 * 66 * The term "uberdata" refers to data that is unique and visible across 67 * all link maps. The name is meant to imply that such data is truly 68 * global, not just locally global to a particular link map. 69 * 70 * See the Linker and Libraries Guide for a full description of alternate 71 * link maps and how they are set up and used. 72 * 73 * Alternate link maps implement multiple global namespaces within a single 74 * process. There may be multiple instances of identical dynamic libraries 75 * loaded in a process's address space at the same time, each on a different 76 * link map (as determined by the dynamic linker), each with its own set of 77 * global variables. Which particular instance of a global variable is seen 78 * by a thread running in the process is determined by the link map on which 79 * the thread happens to be executing at the time. 80 * 81 * However, there are aspects of a process that are unique across all 82 * link maps, in particular the structures used to implement threads 83 * of control (in Sparc terminology, there is only one %g7 regardless 84 * of the link map on which the thread is executing). 85 * 86 * All uberdata is referenced from a base pointer in the thread's ulwp_t 87 * structure (which is also uberdata). All allocations and deallocations 88 * of uberdata are made via the uberdata-aware lmalloc() and lfree() 89 * interfaces (malloc() and free() are simply locally-global). 90 */ 91 92 /* 93 * Special libc-private access to errno. 94 * We do this so that references to errno do not invoke the dynamic linker. 95 */ 96 #undef errno 97 #define errno (*curthread->ul_errnop) 98 99 /* 100 * See <sys/synch32.h> for the reasons for these values 101 * and why they are different for sparc and intel. 102 */ 103 #if defined(__sparc) 104 /* lock.lock64.pad[x] 4 5 6 7 */ 105 #define LOCKMASK 0xff000000 106 #define WAITERMASK 0x000000ff 107 #define WAITER 0x00000001 108 #define LOCKSET 0xff 109 #define LOCKCLEAR 0 110 #elif defined(__x86) 111 /* lock.lock64.pad[x] 7 6 5 4 */ 112 #define LOCKMASK 0xff000000 113 #define WAITERMASK 0x00ff0000 114 #define WAITER 0x00010000 115 #define LOCKSET 0x01 116 #define LOCKCLEAR 0 117 #else 118 #error "neither __sparc nor __x86 is defined" 119 #endif 120 121 /* 122 * Fetch the owner of a USYNC_THREAD mutex. 123 * Don't use this with process-shared mutexes; 124 * the owing thread may be in a different process. 125 */ 126 #define MUTEX_OWNER(mp) ((ulwp_t *)(uintptr_t)(mp)->mutex_owner) 127 128 /* 129 * Test if a thread owns a USYNC_THREAD mutex. This is inappropriate 130 * for a process-shared (USYNC_PROCESS | USYNC_PROCESS_ROBUST) mutex. 131 * The 'mp' argument must not have side-effects since it is evaluated twice. 132 */ 133 #define MUTEX_OWNED(mp, thrp) \ 134 ((mp)->mutex_lockw != 0 && MUTEX_OWNER(mp) == thrp) 135 136 137 /* 138 * uberflags.uf_tdb_register_sync is an interface with libc_db to enable the 139 * collection of lock statistics by a debugger or other collecting tool. 140 * 141 * uberflags.uf_thread_error_detection is set by an environment variable: 142 * _THREAD_ERROR_DETECTION 143 * 0 == no detection of locking primitive errors. 144 * 1 == detect errors and issue a warning message. 145 * 2 == detect errors, issue a warning message, and dump core. 146 * 147 * We bundle these together in uberflags.uf_trs_ted to make a test of either 148 * being non-zero a single memory reference (for speed of mutex_lock(), etc). 149 * 150 * uberflags.uf_mt is set non-zero when the first thread (in addition 151 * to the main thread) is created. 152 * 153 * We bundle all these flags together in uberflags.uf_all to make a test 154 * of any being non-zero a single memory reference (again, for speed). 155 */ 156 typedef union { 157 int uf_all; /* combined all flags */ 158 struct { 159 short h_pad; 160 short h_trs_ted; /* combined reg sync & error detect */ 161 } uf_h; 162 struct { 163 char x_mt; 164 char x_pad; 165 char x_tdb_register_sync; 166 char x_thread_error_detection; 167 } uf_x; 168 } uberflags_t; 169 170 #define uf_mt uf_x.x_mt 171 #define uf_tdb_register_sync uf_x.x_tdb_register_sync 172 #define uf_thread_error_detection uf_x.x_thread_error_detection 173 #define uf_trs_ted uf_h.h_trs_ted /* both of the above */ 174 175 /* 176 * NOTE WELL: 177 * To enable further optimization, the "ul_schedctl_called" member 178 * of the ulwp_t structure (below) serves double-duty: 179 * 1. If NULL, it means that the thread must call __schedctl() 180 * to set up its schedctl mappings before acquiring a mutex. 181 * This is required by the implementation of adaptive mutex locking. 182 * 2. If non-NULL, it points to uberdata.uberflags, so that tests of 183 * uberflags can be made without additional memory references. 184 * This allows the common case of _mutex_lock() and _mutex_unlock() for 185 * USYNC_THREAD mutexes with no error detection and no lock statistics 186 * to be optimized for speed. 187 */ 188 189 190 /* double the default stack size for 64-bit processes */ 191 #ifdef _LP64 192 #define MINSTACK (8 * 1024) 193 #define DEFAULTSTACK (2 * 1024 * 1024) 194 #else 195 #define MINSTACK (4 * 1024) 196 #define DEFAULTSTACK (1024 * 1024) 197 #endif 198 #define TSD_NKEYS _POSIX_THREAD_KEYS_MAX 199 200 #define THREAD_MIN_PRIORITY 0 201 #define THREAD_MAX_PRIORITY 127 202 203 #define PRIO_SET 0 /* set priority and policy */ 204 #define PRIO_SET_PRIO 1 /* set priority only */ 205 #define PRIO_INHERIT 2 206 #define PRIO_DISINHERIT 3 207 208 struct pcclass { 209 short pcc_state; 210 pri_t pcc_primin; 211 pri_t pcc_primax; 212 pcinfo_t pcc_info; 213 }; 214 extern struct pcclass ts_class, rt_class; 215 216 #define MUTEX_TRY 0 217 #define MUTEX_LOCK 1 218 219 #if defined(__x86) 220 221 typedef struct { /* structure returned by fnstenv */ 222 int fctrl; /* control word */ 223 int fstat; /* status word (flags, etc) */ 224 int ftag; /* tag of which regs busy */ 225 int misc[4]; /* other stuff, 28 bytes total */ 226 } fpuenv_t; 227 228 #ifdef _SYSCALL32 229 typedef fpuenv_t fpuenv32_t; 230 #endif /* _SYSCALL32 */ 231 232 #elif defined(__sparc) 233 234 typedef struct { /* fp state structure */ 235 greg_t fsr; 236 greg_t fpu_en; 237 } fpuenv_t; 238 239 #ifdef _SYSCALL32 240 typedef struct { 241 greg32_t fsr; 242 greg32_t fpu_en; 243 } fpuenv32_t; 244 #endif /* _SYSCALL32 */ 245 246 #endif /* __x86 */ 247 248 #if defined(__x86) 249 extern void ht_pause(void); /* "pause" instruction */ 250 #define SMT_PAUSE() ht_pause() 251 #else 252 #define SMT_PAUSE() 253 #endif /* __x86 */ 254 255 /* 256 * Cleanup handler related data. 257 * This structure is exported as _cleanup_t in pthread.h. 258 * pthread.h exports only the size of this structure, so check 259 * _cleanup_t in pthread.h before making any change here. 260 */ 261 typedef struct __cleanup { 262 struct __cleanup *next; /* pointer to next handler */ 263 caddr_t fp; /* current frame pointer */ 264 void (*func)(void *); /* cleanup handler address */ 265 void *arg; /* handler's argument */ 266 } __cleanup_t; 267 268 /* 269 * Thread-Specific Data (TSD) 270 * TSD_NFAST includes the invalid key zero, so there 271 * are really only (TSD_NFAST - 1) fast key slots. 272 */ 273 typedef void (*PFrV)(void *); 274 #define TSD_UNALLOCATED ((PFrV)1) 275 #define TSD_NFAST 9 276 277 /* 278 * The tsd union is designed to burn a little memory (9 words) to make 279 * lookups blindingly fast. Note that tsd_nalloc could be placed at the 280 * end of the pad region to increase the likelihood that it falls on the 281 * same cache line as the data. 282 */ 283 typedef union tsd { 284 uint_t tsd_nalloc; /* Amount of allocated storage */ 285 void *tsd_pad[TSD_NFAST]; 286 void *tsd_data[1]; 287 } tsd_t; 288 289 typedef struct { 290 mutex_t tsdm_lock; /* Lock protecting the data */ 291 uint_t tsdm_nkeys; /* Number of allocated keys */ 292 uint_t tsdm_nused; /* Number of used keys */ 293 PFrV *tsdm_destro; /* Per-key destructors */ 294 char tsdm_pad[64 - /* pad to 64 bytes */ 295 (sizeof (mutex_t) + 2 * sizeof (uint_t) + sizeof (PFrV *))]; 296 } tsd_metadata_t; 297 298 #ifdef _SYSCALL32 299 typedef union tsd32 { 300 uint_t tsd_nalloc; /* Amount of allocated storage */ 301 caddr32_t tsd_pad[TSD_NFAST]; 302 caddr32_t tsd_data[1]; 303 } tsd32_t; 304 305 typedef struct { 306 mutex_t tsdm_lock; /* Lock protecting the data */ 307 uint_t tsdm_nkeys; /* Number of allocated keys */ 308 uint_t tsdm_nused; /* Number of used keys */ 309 caddr32_t tsdm_destro; /* Per-key destructors */ 310 char tsdm_pad[64 - /* pad to 64 bytes */ 311 (sizeof (mutex_t) + 2 * sizeof (uint_t) + sizeof (caddr32_t))]; 312 } tsd_metadata32_t; 313 #endif /* _SYSCALL32 */ 314 315 316 /* 317 * Thread-Local Storage (TLS) 318 */ 319 typedef struct { 320 void *tls_data; 321 size_t tls_size; 322 } tls_t; 323 324 typedef struct { 325 mutex_t tls_lock; /* Lock protecting the data */ 326 tls_t tls_modinfo; /* Root of all TLS_modinfo data */ 327 tls_t static_tls; /* Template for static TLS */ 328 char tls_pad[64 - /* pad to 64 bytes */ 329 (sizeof (mutex_t) + 2 * sizeof (tls_t))]; 330 } tls_metadata_t; 331 332 #ifdef _SYSCALL32 333 typedef struct { 334 caddr32_t tls_data; 335 size32_t tls_size; 336 } tls32_t; 337 338 typedef struct { 339 mutex_t tls_lock; /* Lock protecting the data */ 340 tls32_t tls_modinfo; /* Root of all TLS_modinfo data */ 341 tls32_t static_tls; /* Template for static TLS */ 342 char tls_pad[64 - /* pad to 64 bytes */ 343 (sizeof (mutex_t) + 2 * sizeof (tls32_t))]; 344 } tls_metadata32_t; 345 #endif /* _SYSCALL32 */ 346 347 348 /* 349 * Sleep queues for USYNC_THREAD condvars and mutexes. 350 * The size and alignment is 64 bytes to reduce cache conflicts. 351 */ 352 typedef union { 353 uint64_t qh_64[8]; 354 struct { 355 mutex_t q_lock; 356 uint8_t q_qcnt; 357 uint8_t q_pad[7]; 358 uint64_t q_lockcount; 359 uint32_t q_qlen; 360 uint32_t q_qmax; 361 struct ulwp *q_head; 362 struct ulwp *q_tail; 363 } qh_qh; 364 } queue_head_t; 365 366 #define qh_lock qh_qh.q_lock 367 #define qh_qcnt qh_qh.q_qcnt 368 #define qh_lockcount qh_qh.q_lockcount 369 #define qh_qlen qh_qh.q_qlen 370 #define qh_qmax qh_qh.q_qmax 371 #define qh_head qh_qh.q_head 372 #define qh_tail qh_qh.q_tail 373 374 /* queue types passed to queue_lock() and enqueue() */ 375 #define MX 0 376 #define CV 1 377 #define FIFOQ 0x10 /* or'ing with FIFOQ asks for FIFO queueing */ 378 #define QHASHSIZE 512 379 #define QUEUE_HASH(wchan, type) \ 380 ((uint_t)((((uintptr_t)(wchan) >> 3) ^ ((uintptr_t)(wchan) >> 12)) \ 381 & (QHASHSIZE - 1)) + (((type) == MX)? 0 : QHASHSIZE)) 382 383 extern queue_head_t *queue_lock(void *, int); 384 extern void queue_unlock(queue_head_t *); 385 extern void enqueue(queue_head_t *, struct ulwp *, void *, int); 386 extern struct ulwp *dequeue(queue_head_t *, void *, int *); 387 extern struct ulwp *queue_waiter(queue_head_t *, void *); 388 extern uint8_t dequeue_self(queue_head_t *, void *); 389 extern void unsleep_self(void); 390 extern void spin_lock_set(mutex_t *); 391 extern void spin_lock_clear(mutex_t *); 392 393 /* 394 * Memory block for chain of owned ceiling mutexes. 395 */ 396 typedef struct mxchain { 397 struct mxchain *mxchain_next; 398 mutex_t *mxchain_mx; 399 } mxchain_t; 400 401 /* 402 * Pointer to an rwlock that is held for reading. 403 * Used in rw_rdlock() to allow a thread that already holds a read 404 * lock to acquire another read lock on the same rwlock even if 405 * there are writers waiting. This to avoid deadlock when acquiring 406 * a read lock more than once in the presence of pending writers. 407 * POSIX mandates this behavior. 408 */ 409 typedef struct { 410 void *rd_rwlock; /* the rwlock held for reading */ 411 size_t rd_count; /* count of read locks applied */ 412 } readlock_t; 413 414 #ifdef _SYSCALL32 415 typedef struct { 416 caddr32_t rd_rwlock; 417 size32_t rd_count; 418 } readlock32_t; 419 #endif /* _SYSCALL32 */ 420 421 /* 422 * Maximum number of read locks allowed for one thread on one rwlock. 423 * This could be as large as INT_MAX, but the SUSV3 test suite would 424 * take an inordinately long time to complete. This is big enough. 425 */ 426 #define READ_LOCK_MAX 100000 427 428 #define ul_tlsent ul_tls.tls_data /* array of pointers to dynamic TLS */ 429 #define ul_ntlsent ul_tls.tls_size /* number of entries in ul_tlsent */ 430 431 /* 432 * Round up an integral value to a multiple of 64 433 */ 434 #define roundup64(x) (-(-(x) & -64)) 435 436 /* 437 * NOTE: Whatever changes are made to ulwp_t must be 438 * reflected in $SRC/cmd/mdb/common/modules/libc/libc.c 439 * 440 * NOTE: ul_self *must* be the first member of ulwp_t on x86 441 * Low-level x86 code relies on this. 442 */ 443 typedef struct ulwp { 444 /* 445 * These members always need to come first on sparc. 446 * For dtrace, a ulwp_t must be aligned on a 64-byte boundary. 447 */ 448 #if defined(__sparc) 449 uint32_t ul_dinstr; /* scratch space for dtrace */ 450 uint32_t ul_padsparc0[15]; 451 uint32_t ul_dsave; /* dtrace: save %g1, %g0, %sp */ 452 uint32_t ul_drestore; /* dtrace: restore %g0, %g0, %g0 */ 453 uint32_t ul_dftret; /* dtrace: return probe fasttrap */ 454 uint32_t ul_dreturn; /* dtrace: return %o0 */ 455 #endif 456 struct ulwp *ul_self; /* pointer to self */ 457 #if defined(__i386) 458 uint8_t ul_dinstr[40]; /* scratch space for dtrace */ 459 #elif defined(__amd64) 460 uint8_t ul_dinstr[56]; /* scratch space for dtrace */ 461 #endif 462 struct uberdata *ul_uberdata; /* uber (super-global) data */ 463 tls_t ul_tls; /* dynamic thread-local storage base */ 464 struct ulwp *ul_forw; /* forw, back all_lwps list, */ 465 struct ulwp *ul_back; /* protected by link_lock */ 466 struct ulwp *ul_next; /* list to keep track of stacks */ 467 struct ulwp *ul_hash; /* hash chain linked list */ 468 void *ul_rval; /* return value from thr_exit() */ 469 caddr_t ul_stk; /* mapping base of the stack */ 470 size_t ul_mapsiz; /* mapping size of the stack */ 471 size_t ul_guardsize; /* normally _lpagesize */ 472 uintptr_t ul_stktop; /* broken thr_stksegment() interface */ 473 size_t ul_stksiz; /* broken thr_stksegment() interface */ 474 stack_t ul_ustack; /* current stack boundaries */ 475 int ul_ix; /* hash index */ 476 lwpid_t ul_lwpid; /* thread id, aka the lwp id */ 477 pri_t ul_pri; /* priority known to the library */ 478 pri_t ul_mappedpri; /* priority known to the application */ 479 char ul_policy; /* scheduling policy */ 480 char ul_pri_mapped; /* != 0 means ul_mappedpri is valid */ 481 union { 482 struct { 483 char cursig; /* deferred signal number */ 484 char pleasestop; /* lwp requested to stop itself */ 485 } s; 486 short curplease; /* for testing both at once */ 487 } ul_cp; 488 char ul_stop; /* reason for stopping */ 489 char ul_signalled; /* this lwp was cond_signal()d */ 490 char ul_dead; /* this lwp has called thr_exit */ 491 char ul_unwind; /* posix: unwind C++ stack */ 492 char ul_detached; /* THR_DETACHED at thread_create() */ 493 /* or pthread_detach() was called */ 494 char ul_writer; /* sleeping in rw_wrlock() */ 495 char ul_stopping; /* set by curthread: stopping self */ 496 char ul_pad4; 497 short ul_preempt; /* no_preempt()/preempt() */ 498 short ul_savpreempt; /* pre-existing preempt value */ 499 char ul_sigsuspend; /* thread is in sigsuspend/pollsys */ 500 char ul_main; /* thread is the main thread */ 501 char ul_fork; /* thread is performing a fork */ 502 char ul_primarymap; /* primary link-map is initialized */ 503 /* per-thread copies of the corresponding global variables */ 504 uchar_t ul_max_spinners; /* thread_max_spinners */ 505 char ul_door_noreserve; /* thread_door_noreserve */ 506 char ul_queue_fifo; /* thread_queue_fifo */ 507 char ul_cond_wait_defer; /* thread_cond_wait_defer */ 508 char ul_error_detection; /* thread_error_detection */ 509 char ul_async_safe; /* thread_async_safe */ 510 char ul_pad1[2]; 511 int ul_adaptive_spin; /* thread_adaptive_spin */ 512 int ul_release_spin; /* thread_release_spin */ 513 int ul_queue_spin; /* thread_queue_spin */ 514 volatile int ul_critical; /* non-zero == in a critical region */ 515 int ul_sigdefer; /* non-zero == defer signals */ 516 int ul_vfork; /* thread is the child of vfork() */ 517 int ul_cancelable; /* _cancelon()/_canceloff() */ 518 char ul_cancel_pending; /* pthread_cancel() was called */ 519 char ul_cancel_disabled; /* PTHREAD_CANCEL_DISABLE */ 520 char ul_cancel_async; /* PTHREAD_CANCEL_ASYNCHRONOUS */ 521 char ul_save_async; /* saved copy of ul_cancel_async */ 522 char ul_mutator; /* lwp is a mutator (java interface) */ 523 char ul_created; /* created suspended */ 524 char ul_replace; /* replacement; must be free()d */ 525 uchar_t ul_nocancel; /* cancellation can't happen */ 526 int ul_errno; /* per-thread errno */ 527 int *ul_errnop; /* pointer to errno or self->ul_errno */ 528 __cleanup_t *ul_clnup_hdr; /* head of cleanup handlers list */ 529 uberflags_t *volatile ul_schedctl_called; /* ul_schedctl is set up */ 530 volatile sc_shared_t *volatile ul_schedctl; /* schedctl data */ 531 int ul_bindflags; /* bind_guard() interface to ld.so.1 */ 532 int ul_gs; /* x86 only: value of %gs/%fs */ 533 tsd_t *ul_stsd; /* slow TLS for keys >= TSD_NFAST */ 534 void *ul_ftsd[TSD_NFAST]; /* fast TLS for keys < TSD_NFAST */ 535 td_evbuf_t ul_td_evbuf; /* event buffer */ 536 char ul_td_events_enable; /* event mechanism enabled */ 537 char ul_sync_obj_reg; /* tdb_sync_obj_register() */ 538 char ul_qtype; /* MX or CV */ 539 char ul_cv_wake; /* != 0: just wake up, don't requeue */ 540 int ul_usropts; /* flags given to thr_create() */ 541 void *(*ul_startpc)(void *); /* start func (thr_create()) */ 542 void *ul_startarg; /* argument for start function */ 543 void *ul_wchan; /* synch object when sleeping */ 544 struct ulwp *ul_link; /* sleep queue link */ 545 queue_head_t *ul_sleepq; /* sleep queue thread is waiting on */ 546 mutex_t *ul_cvmutex; /* mutex dropped when waiting on a cv */ 547 mxchain_t *ul_mxchain; /* chain of owned ceiling mutexes */ 548 pri_t ul_epri; /* effective scheduling priority */ 549 pri_t ul_emappedpri; /* effective mapped priority */ 550 uint_t ul_rdlocks; /* # of entries in ul_readlock array */ 551 /* 0 means there is but a single lock */ 552 union { /* single rwlock or pointer to array */ 553 readlock_t single; 554 readlock_t *array; 555 } ul_readlock; 556 /* PROBE_SUPPORT begin */ 557 void *ul_tpdp; 558 /* PROBE_SUPPORT end */ 559 ucontext_t *ul_siglink; /* pointer to previous context */ 560 uint_t ul_spin_lock_spin; /* spin lock statistics */ 561 uint_t ul_spin_lock_spin2; 562 uint_t ul_spin_lock_sleep; 563 uint_t ul_spin_lock_wakeup; 564 /* the following members *must* be last in the structure */ 565 /* they are discarded when ulwp is replaced on thr_exit() */ 566 sigset_t ul_sigmask; /* thread's current signal mask */ 567 sigset_t ul_tmpmask; /* signal mask for sigsuspend/pollsys */ 568 siginfo_t ul_siginfo; /* deferred siginfo */ 569 mutex_t ul_spinlock; /* used when suspending/continuing */ 570 fpuenv_t ul_fpuenv; /* floating point state */ 571 uintptr_t ul_sp; /* stack pointer when blocked */ 572 void *ul_ex_unwind; /* address of _ex_unwind() or -1 */ 573 #if defined(sparc) 574 void *ul_unwind_ret; /* used only by _ex_clnup_handler() */ 575 #endif 576 } ulwp_t; 577 578 #define ul_cursig ul_cp.s.cursig /* deferred signal number */ 579 #define ul_pleasestop ul_cp.s.pleasestop /* lwp requested to stop */ 580 #define ul_curplease ul_cp.curplease /* for testing both at once */ 581 582 /* 583 * This is the size of a replacement ulwp, retained only for the benefit 584 * of thr_join(). The trailing members are unneeded for this purpose. 585 */ 586 #define REPLACEMENT_SIZE ((size_t)&((ulwp_t *)NULL)->ul_sigmask) 587 588 extern size_t _lpagesize; 589 590 /* 591 * Definitions for static initialization of signal sets, 592 * plus some sneaky optimizations in various places. 593 */ 594 595 #define SIGMASK(sig) ((uint32_t)1 << (((sig) - 1) & (32 - 1))) 596 597 #if (MAXSIG > 32 && MAXSIG <= 64) 598 #define FILLSET0 0xffffffffu 599 #define FILLSET1 ((1u << (MAXSIG - 32)) - 1) 600 #else 601 #error "fix me: MAXSIG out of bounds" 602 #endif 603 604 #define CANTMASK0 (SIGMASK(SIGKILL) | SIGMASK(SIGSTOP)) 605 #define CANTMASK1 0 606 607 #define MASKSET0 (FILLSET0 & ~CANTMASK0) 608 #define MASKSET1 (FILLSET1 & ~CANTMASK1) 609 610 extern const sigset_t maskset; /* set of all maskable signals */ 611 612 extern int thread_adaptive_spin; 613 extern uint_t thread_max_spinners; 614 extern int thread_release_spin; 615 extern int thread_queue_spin; 616 extern int thread_queue_fifo; 617 extern int thread_queue_dump; 618 extern int thread_cond_wait_defer; 619 extern int thread_async_safe; 620 extern int thread_queue_verify; 621 622 /* 623 * pthread_atfork() related data, used to store atfork handlers. 624 */ 625 typedef struct atfork { 626 struct atfork *forw; /* forward pointer */ 627 struct atfork *back; /* backward pointer */ 628 void (*prepare)(void); /* pre-fork handler */ 629 void (*parent)(void); /* post-fork parent handler */ 630 void (*child)(void); /* post-fork child handler */ 631 } atfork_t; 632 633 /* 634 * Make our hot locks reside on private cache lines (64 bytes). 635 * pad_cond, pad_owner, and pad_count (aka fork_cond, fork_owner, 636 * and fork_count for _fork_lock) are used only in fork_lock_enter() 637 * to implement the special form of mutual exclusion therein. 638 */ 639 typedef struct { 640 mutex_t pad_lock; 641 cond_t pad_cond; 642 ulwp_t *pad_owner; 643 size_t pad_count; 644 char pad_pad[64 - (sizeof (mutex_t) + sizeof (cond_t) + 645 sizeof (ulwp_t *) + sizeof (size_t))]; 646 } pad_lock_t; 647 648 /* 649 * The threads hash table is used for fast lookup and locking of an active 650 * thread structure (ulwp_t) given a thread-id. It is an N-element array of 651 * thr_hash_table_t structures, where N == 1 before the main thread creates 652 * the first additional thread and N == 1024 afterwards. Each element of the 653 * table is 64 bytes in size and alignment to reduce cache conflicts. 654 */ 655 typedef struct { 656 mutex_t hash_lock; /* lock per bucket */ 657 cond_t hash_cond; /* convar per bucket */ 658 ulwp_t *hash_bucket; /* hash bucket points to the list of ulwps */ 659 char hash_pad[64 - /* pad out to 64 bytes */ 660 (sizeof (mutex_t) + sizeof (cond_t) + sizeof (ulwp_t *))]; 661 } thr_hash_table_t; 662 663 #ifdef _SYSCALL32 664 typedef struct { 665 mutex_t hash_lock; 666 cond_t hash_cond; 667 caddr32_t hash_bucket; 668 char hash_pad[64 - 669 (sizeof (mutex_t) + sizeof (cond_t) + sizeof (caddr32_t))]; 670 } thr_hash_table32_t; 671 #endif /* _SYSCALL32 */ 672 673 674 /* 675 * siguaction members have 64-byte size and alignment. 676 * We know that sizeof (struct sigaction) is 32 bytes for 677 * both _ILP32 and _LP64, so we put the padding in the middle. 678 */ 679 typedef struct { 680 mutex_t sig_lock; 681 char sig_pad[64 - (sizeof (mutex_t) + sizeof (struct sigaction))]; 682 struct sigaction sig_uaction; 683 } siguaction_t; 684 685 #ifdef _SYSCALL32 686 typedef struct { 687 mutex_t sig_lock; 688 char sig_pad[64 - (sizeof (mutex_t) + sizeof (struct sigaction32))]; 689 struct sigaction32 sig_uaction; 690 } siguaction32_t; 691 #endif /* _SYSCALL32 */ 692 693 694 /* 695 * Bucket structures, used by lmalloc()/lfree(). 696 * See port/threads/alloc.c for details. 697 * A bucket's size and alignment is 64 bytes. 698 */ 699 typedef struct { 700 mutex_t bucket_lock; /* protects the free list allocations */ 701 void *free_list; /* LIFO list of blocks to allocate/free */ 702 size_t chunks; /* number of 64K blocks mmap()ed last time */ 703 char pad64[64 - /* pad out to 64 bytes */ 704 (sizeof (mutex_t) + sizeof (void *) + sizeof (size_t))]; 705 } bucket_t; 706 707 #ifdef _SYSCALL32 708 typedef struct { 709 mutex_t bucket_lock; 710 caddr32_t free_list; 711 size32_t chunks; 712 char pad64[64 - /* pad out to 64 bytes */ 713 (sizeof (mutex_t) + sizeof (caddr32_t) + sizeof (size32_t))]; 714 } bucket32_t; 715 #endif /* _SYSCALL32 */ 716 717 #define NBUCKETS 10 /* sizes ranging from 64 to 32768 */ 718 719 720 /* 721 * atexit() data structures. 722 * See port/gen/atexit.c for details. 723 */ 724 typedef void (*_exithdlr_func_t) (void); 725 726 typedef struct _exthdlr { 727 struct _exthdlr *next; /* next in handler list */ 728 _exithdlr_func_t hdlr; /* handler itself */ 729 } _exthdlr_t; 730 731 typedef struct { 732 mutex_t exitfns_lock; 733 _exthdlr_t *head; 734 void *exit_frame_monitor; 735 char exit_pad[64 - /* pad out to 64 bytes */ 736 (sizeof (mutex_t) + sizeof (_exthdlr_t *) + sizeof (void *))]; 737 } atexit_root_t; 738 739 #ifdef _SYSCALL32 740 typedef struct { 741 mutex_t exitfns_lock; 742 caddr32_t head; 743 caddr32_t exit_frame_monitor; 744 char exit_pad[64 - /* pad out to 64 bytes */ 745 (sizeof (mutex_t) + sizeof (caddr32_t) + sizeof (caddr32_t))]; 746 } atexit_root32_t; 747 #endif /* _SYSCALL32 */ 748 749 750 /* 751 * This is data that is global to all link maps (uberdata, aka super-global). 752 */ 753 typedef struct uberdata { 754 pad_lock_t _link_lock; 755 pad_lock_t _fork_lock; 756 pad_lock_t _tdb_hash_lock; 757 tdb_sync_stats_t tdb_hash_lock_stats; 758 siguaction_t siguaction[NSIG]; 759 bucket_t bucket[NBUCKETS]; 760 atexit_root_t atexit_root; 761 tsd_metadata_t tsd_metadata; 762 tls_metadata_t tls_metadata; 763 /* 764 * Every object before this point has size and alignment of 64 bytes. 765 * Don't add any other type of data before this point. 766 */ 767 char primary_map; /* set when primary link map is initialized */ 768 char bucket_init; /* set when bucket[NBUCKETS] is initialized */ 769 char pad[2]; 770 uberflags_t uberflags; 771 queue_head_t *queue_head; 772 thr_hash_table_t *thr_hash_table; 773 uint_t hash_size; /* # of entries in thr_hash_table[] */ 774 uint_t hash_mask; /* hash_size - 1 */ 775 ulwp_t *ulwp_one; /* main thread */ 776 ulwp_t *all_lwps; /* circular ul_forw/ul_back list of live lwps */ 777 ulwp_t *all_zombies; /* circular ul_forw/ul_back list of zombies */ 778 int nthreads; /* total number of live threads/lwps */ 779 int nzombies; /* total number of zombie threads */ 780 int ndaemons; /* total number of THR_DAEMON threads/lwps */ 781 pid_t pid; /* the current process's pid */ 782 void (*sigacthandler)(int, siginfo_t *, void *); 783 ulwp_t *lwp_stacks; 784 ulwp_t *lwp_laststack; 785 int nfreestack; 786 int thread_stack_cache; 787 ulwp_t *ulwp_freelist; 788 ulwp_t *ulwp_lastfree; 789 ulwp_t *ulwp_replace_free; 790 ulwp_t *ulwp_replace_last; 791 atfork_t *atforklist; /* circular Q for fork handlers */ 792 struct uberdata **tdb_bootstrap; 793 tdb_t tdb; /* thread debug interfaces (for libc_db) */ 794 } uberdata_t; 795 796 #define link_lock _link_lock.pad_lock 797 #define fork_lock _fork_lock.pad_lock 798 #define fork_cond _fork_lock.pad_cond 799 #define fork_owner _fork_lock.pad_owner 800 #define fork_count _fork_lock.pad_count 801 #define tdb_hash_lock _tdb_hash_lock.pad_lock 802 803 #pragma align 64(__uberdata) 804 extern uberdata_t __uberdata; 805 extern uberdata_t **__tdb_bootstrap; /* known to libc_db and mdb */ 806 extern int primary_link_map; 807 808 #define ulwp_mutex(ulwp, udp) \ 809 (&(udp)->thr_hash_table[(ulwp)->ul_ix].hash_lock) 810 #define ulwp_condvar(ulwp, udp) \ 811 (&(udp)->thr_hash_table[(ulwp)->ul_ix].hash_cond) 812 813 /* 814 * Grab and release the hash table lock for the specified lwp. 815 */ 816 #define ulwp_lock(ulwp, udp) lmutex_lock(ulwp_mutex(ulwp, udp)) 817 #define ulwp_unlock(ulwp, udp) lmutex_unlock(ulwp_mutex(ulwp, udp)) 818 819 #ifdef _SYSCALL32 /* needed by libc_db */ 820 821 typedef struct ulwp32 { 822 #if defined(__sparc) 823 uint32_t ul_dinstr; /* scratch space for dtrace */ 824 uint32_t ul_padsparc0[15]; 825 uint32_t ul_dsave; /* dtrace: save %g1, %g0, %sp */ 826 uint32_t ul_drestore; /* dtrace: restore %g0, %g0, %g0 */ 827 uint32_t ul_dftret; /* dtrace: return probe fasttrap */ 828 uint32_t ul_dreturn; /* dtrace: return %o0 */ 829 #endif 830 caddr32_t ul_self; /* pointer to self */ 831 #if defined(__x86) 832 uint8_t ul_dinstr[40]; /* scratch space for dtrace */ 833 #endif 834 caddr32_t ul_uberdata; /* uber (super-global) data */ 835 tls32_t ul_tls; /* dynamic thread-local storage base */ 836 caddr32_t ul_forw; /* forw, back all_lwps list, */ 837 caddr32_t ul_back; /* protected by link_lock */ 838 caddr32_t ul_next; /* list to keep track of stacks */ 839 caddr32_t ul_hash; /* hash chain linked list */ 840 caddr32_t ul_rval; /* return value from thr_exit() */ 841 caddr32_t ul_stk; /* mapping base of the stack */ 842 size32_t ul_mapsiz; /* mapping size of the stack */ 843 size32_t ul_guardsize; /* normally _lpagesize */ 844 caddr32_t ul_stktop; /* broken thr_stksegment() interface */ 845 size32_t ul_stksiz; /* broken thr_stksegment() interface */ 846 stack32_t ul_ustack; /* current stack boundaries */ 847 int ul_ix; /* hash index */ 848 lwpid_t ul_lwpid; /* thread id, aka the lwp id */ 849 pri_t ul_pri; /* priority known to the library */ 850 pri_t ul_mappedpri; /* priority known to the application */ 851 char ul_policy; /* scheduling policy */ 852 char ul_pri_mapped; /* != 0 means ul_mappedpri is valid */ 853 union { 854 struct { 855 char cursig; /* deferred signal number */ 856 char pleasestop; /* lwp requested to stop itself */ 857 } s; 858 short curplease; /* for testing both at once */ 859 } ul_cp; 860 char ul_stop; /* reason for stopping */ 861 char ul_signalled; /* this lwp was cond_signal()d */ 862 char ul_dead; /* this lwp has called thr_exit */ 863 char ul_unwind; /* posix: unwind C++ stack */ 864 char ul_detached; /* THR_DETACHED at thread_create() */ 865 /* or pthread_detach() was called */ 866 char ul_writer; /* sleeping in rw_wrlock() */ 867 char ul_stopping; /* set by curthread: stopping self */ 868 char ul_pad4; 869 short ul_preempt; /* no_preempt()/preempt() */ 870 short ul_savpreempt; /* pre-existing preempt value */ 871 char ul_sigsuspend; /* thread is in sigsuspend/pollsys */ 872 char ul_main; /* thread is the main thread */ 873 char ul_fork; /* thread is performing a fork */ 874 char ul_primarymap; /* primary link-map is initialized */ 875 /* per-thread copies of the corresponding global variables */ 876 uchar_t ul_max_spinners; /* thread_max_spinners */ 877 char ul_door_noreserve; /* thread_door_noreserve */ 878 char ul_queue_fifo; /* thread_queue_fifo */ 879 char ul_cond_wait_defer; /* thread_cond_wait_defer */ 880 char ul_error_detection; /* thread_error_detection */ 881 char ul_async_safe; /* thread_async_safe */ 882 char ul_pad1[2]; 883 int ul_adaptive_spin; /* thread_adaptive_spin */ 884 int ul_release_spin; /* thread_release_spin */ 885 int ul_queue_spin; /* thread_queue_spin */ 886 int ul_critical; /* non-zero == in a critical region */ 887 int ul_sigdefer; /* non-zero == defer signals */ 888 int ul_vfork; /* thread is the child of vfork() */ 889 int ul_cancelable; /* _cancelon()/_canceloff() */ 890 char ul_cancel_pending; /* pthread_cancel() was called */ 891 char ul_cancel_disabled; /* PTHREAD_CANCEL_DISABLE */ 892 char ul_cancel_async; /* PTHREAD_CANCEL_ASYNCHRONOUS */ 893 char ul_save_async; /* saved copy of ul_cancel_async */ 894 char ul_mutator; /* lwp is a mutator (java interface) */ 895 char ul_created; /* created suspended */ 896 char ul_replace; /* replacement; must be free()d */ 897 uchar_t ul_nocancel; /* cancellation can't happen */ 898 int ul_errno; /* per-thread errno */ 899 caddr32_t ul_errnop; /* pointer to errno or self->ul_errno */ 900 caddr32_t ul_clnup_hdr; /* head of cleanup handlers list */ 901 caddr32_t ul_schedctl_called; /* ul_schedctl is set up */ 902 caddr32_t ul_schedctl; /* schedctl data */ 903 int ul_bindflags; /* bind_guard() interface to ld.so.1 */ 904 int ul_gs; /* x86 only: value of %gs/%fs */ 905 caddr32_t ul_stsd; /* slow TLS for keys >= TSD_NFAST */ 906 caddr32_t ul_ftsd[TSD_NFAST]; /* fast TLS for keys < TSD_NFAST */ 907 td_evbuf32_t ul_td_evbuf; /* event buffer */ 908 char ul_td_events_enable; /* event mechanism enabled */ 909 char ul_sync_obj_reg; /* tdb_sync_obj_register() */ 910 char ul_qtype; /* MX or CV */ 911 char ul_cv_wake; /* != 0: just wake up, don't requeue */ 912 int ul_usropts; /* flags given to thr_create() */ 913 caddr32_t ul_startpc; /* start func (thr_create()) */ 914 caddr32_t ul_startarg; /* argument for start function */ 915 caddr32_t ul_wchan; /* synch object when sleeping */ 916 caddr32_t ul_link; /* sleep queue link */ 917 caddr32_t ul_sleepq; /* sleep queue thread is waiting on */ 918 caddr32_t ul_cvmutex; /* mutex dropped when waiting on a cv */ 919 caddr32_t ul_mxchain; /* chain of owned ceiling mutexes */ 920 pri_t ul_epri; /* effective scheduling priority */ 921 pri_t ul_emappedpri; /* effective mapped priority */ 922 uint_t ul_rdlocks; /* # of entries in ul_readlock array */ 923 /* 0 means there is but a single lock */ 924 union { /* single rwlock or pointer to array */ 925 readlock32_t single; 926 caddr32_t array; 927 } ul_readlock; 928 /* PROBE_SUPPORT begin */ 929 caddr32_t ul_tpdp; 930 /* PROBE_SUPPORT end */ 931 caddr32_t ul_siglink; /* pointer to previous context */ 932 uint_t ul_spin_lock_spin; /* spin lock statistics */ 933 uint_t ul_spin_lock_spin2; 934 uint_t ul_spin_lock_sleep; 935 uint_t ul_spin_lock_wakeup; 936 /* the following members *must* be last in the structure */ 937 /* they are discarded when ulwp is replaced on thr_exit() */ 938 sigset32_t ul_sigmask; /* thread's current signal mask */ 939 sigset32_t ul_tmpmask; /* signal mask for sigsuspend/pollsys */ 940 siginfo32_t ul_siginfo; /* deferred siginfo */ 941 mutex_t ul_spinlock; /* used when suspending/continuing */ 942 fpuenv32_t ul_fpuenv; /* floating point state */ 943 caddr32_t ul_sp; /* stack pointer when blocked */ 944 #if defined(sparc) 945 caddr32_t ul_unwind_ret; /* used only by _ex_clnup_handler() */ 946 #endif 947 } ulwp32_t; 948 949 #define REPLACEMENT_SIZE32 ((size_t)&((ulwp32_t *)NULL)->ul_sigmask) 950 951 typedef struct uberdata32 { 952 pad_lock_t _link_lock; 953 pad_lock_t _fork_lock; 954 pad_lock_t _tdb_hash_lock; 955 tdb_sync_stats_t tdb_hash_lock_stats; 956 siguaction32_t siguaction[NSIG]; 957 bucket32_t bucket[NBUCKETS]; 958 atexit_root32_t atexit_root; 959 tsd_metadata32_t tsd_metadata; 960 tls_metadata32_t tls_metadata; 961 char primary_map; 962 char bucket_init; 963 char pad[2]; 964 uberflags_t uberflags; 965 caddr32_t queue_head; 966 caddr32_t thr_hash_table; 967 uint_t hash_size; 968 uint_t hash_mask; 969 caddr32_t ulwp_one; 970 caddr32_t all_lwps; 971 caddr32_t all_zombies; 972 int nthreads; 973 int nzombies; 974 int ndaemons; 975 int pid; 976 caddr32_t sigacthandler; 977 caddr32_t lwp_stacks; 978 caddr32_t lwp_laststack; 979 int nfreestack; 980 int thread_stack_cache; 981 caddr32_t ulwp_freelist; 982 caddr32_t ulwp_lastfree; 983 caddr32_t ulwp_replace_free; 984 caddr32_t ulwp_replace_last; 985 caddr32_t atforklist; 986 caddr32_t tdb_bootstrap; 987 tdb32_t tdb; 988 } uberdata32_t; 989 990 #endif /* _SYSCALL32 */ 991 992 /* ul_stop values */ 993 #define TSTP_REGULAR 0x01 /* Stopped by thr_suspend() */ 994 #define TSTP_MUTATOR 0x08 /* stopped by thr_suspend_*mutator*() */ 995 #define TSTP_FORK 0x20 /* stopped by suspend_fork() */ 996 997 /* 998 * Implementation-specific attribute types for pthread_mutexattr_init() etc. 999 */ 1000 1001 typedef struct _cvattr { 1002 int pshared; 1003 clockid_t clockid; 1004 } cvattr_t; 1005 1006 typedef struct _mattr { 1007 int pshared; 1008 int protocol; 1009 int prioceiling; 1010 int type; 1011 int robustness; 1012 } mattr_t; 1013 1014 typedef struct _thrattr { 1015 size_t stksize; 1016 void *stkaddr; 1017 int detachstate; 1018 int scope; 1019 int prio; 1020 int policy; 1021 int inherit; 1022 size_t guardsize; 1023 } thrattr_t; 1024 1025 typedef struct _rwlattr { 1026 int pshared; 1027 } rwlattr_t; 1028 1029 /* _curthread() is inline for speed */ 1030 extern ulwp_t *_curthread(void); 1031 #define curthread (_curthread()) 1032 1033 /* this version (also inline) can be tested for NULL */ 1034 extern ulwp_t *__curthread(void); 1035 1036 /* get the current stack pointer (also inline) */ 1037 extern greg_t stkptr(void); 1038 1039 /* 1040 * Suppress __attribute__((...)) if we are not compiling with gcc 1041 */ 1042 #if !defined(__GNUC__) 1043 #define __attribute__(string) 1044 #endif 1045 1046 /* 1047 * Implementation functions. Not visible outside of the library itself. 1048 */ 1049 extern int ___nanosleep(const timespec_t *, timespec_t *); 1050 extern void getgregs(ulwp_t *, gregset_t); 1051 extern void setgregs(ulwp_t *, gregset_t); 1052 extern void thr_panic(const char *); 1053 #pragma rarely_called(thr_panic) 1054 extern ulwp_t *find_lwp(thread_t); 1055 extern int real_priority(ulwp_t *); 1056 extern void finish_init(void); 1057 extern void queue_alloc(void); 1058 extern void tsd_exit(void); 1059 extern void tsd_free(ulwp_t *); 1060 extern void tls_setup(void); 1061 extern void tls_exit(void); 1062 extern void tls_free(ulwp_t *); 1063 extern void rwl_free(ulwp_t *); 1064 extern void sigacthandler(int, siginfo_t *, void *); 1065 extern void signal_init(void); 1066 extern int sigequalset(const sigset_t *, const sigset_t *); 1067 extern void mutex_setup(void); 1068 extern void take_deferred_signal(int); 1069 extern int setup_context(ucontext_t *, void *(*func)(ulwp_t *), 1070 ulwp_t *ulwp, caddr_t stk, size_t stksize); 1071 extern volatile sc_shared_t *setup_schedctl(void); 1072 extern void *lmalloc(size_t); 1073 extern void lfree(void *, size_t); 1074 extern void *libc_malloc(size_t); 1075 extern void *libc_realloc(void *, size_t); 1076 extern void libc_free(void *); 1077 extern char *libc_strdup(const char *); 1078 extern void ultos(uint64_t, int, char *); 1079 extern void lock_error(const mutex_t *, const char *, void *, const char *); 1080 extern void rwlock_error(const rwlock_t *, const char *, const char *); 1081 extern void thread_error(const char *); 1082 extern void grab_assert_lock(void); 1083 extern void dump_queue_statistics(void); 1084 extern void collect_queue_statistics(void); 1085 extern void record_spin_locks(ulwp_t *); 1086 #if defined(__sparc) 1087 extern void _flush_windows(void); 1088 #else 1089 #define _flush_windows() 1090 #endif 1091 extern void set_curthread(void *); 1092 1093 #if defined(THREAD_DEBUG) 1094 1095 extern void __assfail(const char *, const char *, int); 1096 #pragma rarely_called(__assfail) 1097 #define ASSERT(EX) (void)((EX) || (__assfail(#EX, __FILE__, __LINE__), 0)) 1098 1099 #else /* THREAD_DEBUG */ 1100 1101 #define ASSERT(EX) ((void)0) 1102 1103 #endif /* THREAD_DEBUG */ 1104 1105 /* enter a critical section */ 1106 #define enter_critical(self) (self->ul_critical++) 1107 1108 /* exit a critical section, take deferred actions if necessary */ 1109 extern void do_exit_critical(void); 1110 #define exit_critical(self) \ 1111 (void) (self->ul_critical--, \ 1112 ((self->ul_curplease && self->ul_critical == 0)? \ 1113 (do_exit_critical(), 0) : 0)) 1114 1115 /* 1116 * Like enter_critical()/exit_critical() but just for deferring signals. 1117 * Unlike enter_critical()/exit_critical(), ul_sigdefer may be set while 1118 * calling application functions like constructors and destructors. 1119 * Care must be taken if the application function attempts to set 1120 * the signal mask while a deferred signal is present; the setting 1121 * of the signal mask must also be deferred. 1122 */ 1123 #define sigoff(self) (self->ul_sigdefer++) 1124 extern void sigon(ulwp_t *); 1125 1126 /* these are exported functions */ 1127 extern void _sigoff(void); 1128 extern void _sigon(void); 1129 1130 #define sigorset(s1, s2) \ 1131 (((s1)->__sigbits[0] |= (s2)->__sigbits[0]), \ 1132 ((s1)->__sigbits[1] |= (s2)->__sigbits[1]), \ 1133 ((s1)->__sigbits[2] |= (s2)->__sigbits[2]), \ 1134 ((s1)->__sigbits[3] |= (s2)->__sigbits[3])) 1135 1136 #define sigandset(s1, s2) \ 1137 (((s1)->__sigbits[0] &= (s2)->__sigbits[0]), \ 1138 ((s1)->__sigbits[1] &= (s2)->__sigbits[1]), \ 1139 ((s1)->__sigbits[2] &= (s2)->__sigbits[2]), \ 1140 ((s1)->__sigbits[3] &= (s2)->__sigbits[3])) 1141 1142 #define sigdiffset(s1, s2) \ 1143 (((s1)->__sigbits[0] &= ~(s2)->__sigbits[0]), \ 1144 ((s1)->__sigbits[1] &= ~(s2)->__sigbits[1]), \ 1145 ((s1)->__sigbits[2] &= ~(s2)->__sigbits[2]), \ 1146 ((s1)->__sigbits[3] &= ~(s2)->__sigbits[3])) 1147 1148 #define delete_reserved_signals(s) \ 1149 (((s)->__sigbits[0] &= MASKSET0), \ 1150 ((s)->__sigbits[1] &= (MASKSET1 & ~SIGMASK(SIGCANCEL))),\ 1151 ((s)->__sigbits[2] = 0), \ 1152 ((s)->__sigbits[3] = 0)) 1153 1154 extern void block_all_signals(ulwp_t *self); 1155 1156 /* 1157 * When restoring the signal mask after having previously called 1158 * block_all_signals(), if we have a deferred signal present then 1159 * do nothing other than ASSERT() that we are in a critical region. 1160 * The signal mask will be set when we emerge from the critical region 1161 * and call take_deferred_signal(). There is no race condition here 1162 * because the kernel currently has all signals blocked for this thread. 1163 */ 1164 #define restore_signals(self) \ 1165 ((void) ((self)->ul_cursig? \ 1166 (ASSERT((self)->ul_critical + (self)->ul_sigdefer != 0), 0) : \ 1167 __lwp_sigmask(SIG_SETMASK, &(self)->ul_sigmask, NULL))) 1168 1169 extern void set_parking_flag(ulwp_t *, int); 1170 1171 extern void *_thr_setup(ulwp_t *); 1172 extern void _fpinherit(ulwp_t *); 1173 extern void _lwp_start(void); 1174 extern void _lwp_terminate(void); 1175 extern void lmutex_unlock(mutex_t *); 1176 extern void lmutex_lock(mutex_t *); 1177 extern void _prefork_handler(void); 1178 extern void _postfork_parent_handler(void); 1179 extern void _postfork_child_handler(void); 1180 extern void _postfork1_child(void); 1181 extern int fork_lock_enter(const char *); 1182 extern void fork_lock_exit(void); 1183 extern void suspend_fork(void); 1184 extern void continue_fork(int); 1185 extern void do_sigcancel(void); 1186 extern void init_sigcancel(void); 1187 extern void _cancelon(void); 1188 extern void _canceloff(void); 1189 extern void _canceloff_nocancel(void); 1190 extern void no_preempt(ulwp_t *); 1191 extern void preempt(ulwp_t *); 1192 extern void _thrp_unwind(void *); 1193 1194 /* 1195 * Prototypes for the strong versions of the interface functions 1196 */ 1197 extern pid_t _fork(void); 1198 extern pid_t _fork1(void); 1199 extern pid_t __fork1(void); 1200 extern pid_t _forkall(void); 1201 extern pid_t __forkall(void); 1202 extern pid_t _private_getpid(void); 1203 extern uid_t _private_geteuid(void); 1204 extern int _kill(pid_t, int); 1205 extern int _open(const char *, int, ...); 1206 extern int _close(int); 1207 extern ssize_t _read(int, void *, size_t); 1208 extern ssize_t _write(int, const void *, size_t); 1209 extern void *_memcpy(void *, const void *, size_t); 1210 extern void *_memset(void *, int, size_t); 1211 extern void *_private_memcpy(void *, const void *, size_t); 1212 extern void *_private_memset(void *, int, size_t); 1213 extern int _private_sigfillset(sigset_t *); 1214 extern int _private_sigemptyset(sigset_t *); 1215 extern int _private_sigaddset(sigset_t *, int); 1216 extern int _private_sigdelset(sigset_t *, int); 1217 extern int _private_sigismember(sigset_t *, int); 1218 extern void *_private_mmap(void *, size_t, int, int, int, off_t); 1219 extern int _private_mprotect(void *, size_t, int); 1220 extern int _private_munmap(void *, size_t); 1221 extern int _private_getrlimit(int, struct rlimit *); 1222 extern int __lwp_continue(lwpid_t); 1223 extern int __lwp_create(ucontext_t *, uint_t, lwpid_t *); 1224 extern int __lwp_kill(lwpid_t, int); 1225 extern lwpid_t __lwp_self(void); 1226 extern int ___lwp_suspend(lwpid_t); 1227 extern void lwp_yield(void); 1228 extern int lwp_wait(lwpid_t, lwpid_t *); 1229 extern int __lwp_wait(lwpid_t, lwpid_t *); 1230 extern int __lwp_detach(lwpid_t); 1231 extern sc_shared_t *__schedctl(void); 1232 1233 extern int _private_setcontext(const ucontext_t *); 1234 extern int _private_getcontext(ucontext_t *); 1235 #pragma unknown_control_flow(_private_getcontext) 1236 /* actual system call traps */ 1237 extern int __setcontext_syscall(const ucontext_t *); 1238 extern int __getcontext_syscall(ucontext_t *); 1239 extern int _private_setustack(stack_t *); 1240 extern int __clock_gettime(clockid_t, timespec_t *); 1241 extern void abstime_to_reltime(clockid_t, const timespec_t *, timespec_t *); 1242 extern void hrt2ts(hrtime_t, timespec_t *); 1243 1244 extern int __sigaction(int, const struct sigaction *, struct sigaction *); 1245 extern int __lwp_sigmask(int, const sigset_t *, sigset_t *); 1246 extern void __sighndlr(int, siginfo_t *, ucontext_t *, void (*)()); 1247 extern caddr_t __sighndlrend; 1248 #pragma unknown_control_flow(__sighndlr) 1249 1250 extern void _pthread_exit(void *); 1251 1252 /* these are private to the library */ 1253 extern int _private_mutex_init(mutex_t *, int, void *); 1254 extern int _private_mutex_destroy(mutex_t *); 1255 extern int _private_mutex_lock(mutex_t *); 1256 extern int _private_mutex_trylock(mutex_t *); 1257 extern int _private_mutex_unlock(mutex_t *); 1258 1259 extern int _mutex_init(mutex_t *, int, void *); 1260 extern int _mutex_destroy(mutex_t *); 1261 extern int _mutex_lock(mutex_t *); 1262 extern int _mutex_trylock(mutex_t *); 1263 extern int _mutex_unlock(mutex_t *); 1264 extern void _mutex_set_typeattr(mutex_t *, int); 1265 extern int __mutex_init(mutex_t *, int, void *); 1266 extern int __mutex_destroy(mutex_t *); 1267 extern int __mutex_lock(mutex_t *); 1268 extern int __mutex_trylock(mutex_t *); 1269 extern int __mutex_unlock(mutex_t *); 1270 extern int mutex_is_held(mutex_t *); 1271 extern int mutex_lock_internal(mutex_t *, timespec_t *, int); 1272 extern int mutex_trylock_adaptive(mutex_t *); 1273 extern int mutex_queuelock_adaptive(mutex_t *); 1274 extern int mutex_lock_impl(mutex_t *mp, timespec_t *tsp); 1275 1276 extern int _cond_init(cond_t *, int, void *); 1277 extern int _cond_wait(cond_t *, mutex_t *); 1278 extern int _cond_timedwait(cond_t *, mutex_t *, const timespec_t *); 1279 extern int _cond_reltimedwait(cond_t *, mutex_t *, const timespec_t *); 1280 extern int _cond_signal(cond_t *); 1281 extern int _cond_broadcast(cond_t *); 1282 extern int _cond_destroy(cond_t *); 1283 extern int cond_sleep_queue(cond_t *, mutex_t *, timespec_t *); 1284 extern int cond_sleep_kernel(cond_t *, mutex_t *, timespec_t *); 1285 extern int cond_signal_internal(cond_t *); 1286 extern int cond_broadcast_internal(cond_t *); 1287 1288 extern int __rwlock_init(rwlock_t *, int, void *); 1289 extern int rw_read_is_held(rwlock_t *); 1290 extern int rw_write_is_held(rwlock_t *); 1291 1292 extern int _thr_continue(thread_t); 1293 extern int _thrp_create(void *, size_t, void *(*func)(void *), void *, 1294 long, thread_t *, pri_t, int, size_t); 1295 extern int _thr_getprio(thread_t, int *); 1296 extern int _thr_getspecific(thread_key_t, void **); 1297 extern int _thr_join(thread_t, thread_t *, void **); 1298 extern int _thr_keycreate(thread_key_t *, PFrV); 1299 extern int _thr_key_delete(thread_key_t); 1300 extern int _thr_main(void); 1301 extern thread_t _thr_self(void); 1302 extern int _thr_getconcurrency(void); 1303 extern int _thr_setconcurrency(int); 1304 extern int _thr_setprio(thread_t, int); 1305 extern int _thr_setspecific(thread_key_t, void *); 1306 extern int _thr_stksegment(stack_t *); 1307 extern int _thrp_suspend(thread_t, uchar_t); 1308 extern int _thrp_continue(thread_t, uchar_t); 1309 extern int _thr_sigsetmask(int, const sigset_t *, sigset_t *); 1310 1311 extern void _thr_terminate(void *); 1312 extern void _thr_exit(void *); 1313 extern void _thrp_exit(void); 1314 1315 extern int _thread_setschedparam_main(pthread_t, int, 1316 const struct sched_param *, int); 1317 extern int _validate_rt_prio(int, int); 1318 extern int _thrp_setlwpprio(lwpid_t, int, int); 1319 extern pri_t _map_rtpri_to_gp(pri_t); 1320 1321 /* 1322 * System call wrappers (direct interfaces to the kernel) 1323 */ 1324 extern int ___lwp_mutex_init(mutex_t *, int); 1325 extern int ___lwp_mutex_trylock(mutex_t *); 1326 extern int ___lwp_mutex_timedlock(mutex_t *, timespec_t *); 1327 extern int ___lwp_mutex_unlock(mutex_t *); 1328 extern int ___lwp_mutex_wakeup(mutex_t *); 1329 extern int ___lwp_cond_wait(cond_t *, mutex_t *, timespec_t *, int); 1330 extern int __lwp_cond_signal(lwp_cond_t *); 1331 extern int __lwp_cond_broadcast(lwp_cond_t *); 1332 extern int ___lwp_sema_timedwait(lwp_sema_t *, timespec_t *, int); 1333 extern int __lwp_sema_trywait(lwp_sema_t *); 1334 extern int __lwp_sema_post(lwp_sema_t *); 1335 extern int __lwp_rwlock_rdlock(rwlock_t *, timespec_t *); 1336 extern int __lwp_rwlock_wrlock(rwlock_t *, timespec_t *); 1337 extern int __lwp_rwlock_tryrdlock(rwlock_t *); 1338 extern int __lwp_rwlock_trywrlock(rwlock_t *); 1339 extern int __lwp_rwlock_unlock(rwlock_t *); 1340 extern int __lwp_park(timespec_t *, lwpid_t); 1341 extern int __lwp_unpark(lwpid_t); 1342 extern int __lwp_unpark_all(lwpid_t *, int); 1343 #if defined(__x86) 1344 extern int ___lwp_private(int, int, void *); 1345 #endif /* __x86 */ 1346 1347 extern int _private_lwp_mutex_lock(mutex_t *); 1348 extern int _private_lwp_mutex_unlock(mutex_t *); 1349 1350 /* 1351 * inlines 1352 */ 1353 extern int set_lock_byte(volatile uint8_t *); 1354 extern uint32_t swap32(volatile uint32_t *, uint32_t); 1355 extern uint32_t cas32(volatile uint32_t *, uint32_t, uint32_t); 1356 extern void incr32(volatile uint32_t *); 1357 extern void decr32(volatile uint32_t *); 1358 #if defined(__sparc) 1359 extern ulong_t caller(void); 1360 extern ulong_t getfp(void); 1361 #endif /* __sparc */ 1362 1363 #include "thr_inlines.h" 1364 1365 #endif /* _THR_UBERDATA_H */ 1366