src/threads/threads-common.c

   1 /* src/threads/threads-common.c - machine independent thread functions
   2
   3    Copyright (C) 2007 R. Grafl, A. Krall, C. Kruegel,
   4    C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
   5    E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
   6    J. Wenninger, Institut f. Computersprachen - TU Wien
   7
   8    This file is part of CACAO.
   9
  10    This program is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU General Public License as
  12    published by the Free Software Foundation; either version 2, or (at
  13    your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful, but
  16    WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  23    02110-1301, USA.
  24
  25 */
  26
  27
  28 #include "config.h"
  29
  30 #include <assert.h>
  31 #include <stdint.h>
  32 #include <unistd.h>
  33
  34 #include "vm/types.h"
  35
  36 #include "mm/memory.h"
  37
  38 #include "native/jni.h"
  39 #include "native/llni.h"
  40
  41 #include "native/include/java_lang_Object.h"
  42 #include "native/include/java_lang_String.h"
  43 #include "native/include/java_lang_Thread.h"
  44
  45 #if defined(WITH_CLASSPATH_GNU)
  46 # include "native/include/java_lang_VMThread.h"
  47 #endif
  48
  49 #include "threads/critical.h"
  50 #include "threads/lock-common.h"
  51 #include "threads/threads-common.h"
  52
  53 #include "toolbox/list.h"
  54
  55 #include "vm/builtin.h"
  56 #include "vm/stringlocal.h"
  57 #include "vm/vm.h"
  58
  59 #include "vm/jit/stacktrace.h"
  60
  61 #include "vmcore/class.h"
  62
  63 #if defined(ENABLE_STATISTICS)
  64 # include "vmcore/options.h"
  65 # include "vmcore/statistics.h"
  66 #endif
  67
  68 #include "vmcore/utf8.h"
  69
  70
  71 /* global variables ***********************************************************/
  72
  73 /* global threads list */
  74 static list_t *list_threads;
  75
  76 /* global threads free-list */
  77
  78 typedef struct thread_index_t {
  79         int32_t    index;
  80         listnode_t linkage;
  81 } thread_index_t;
  82
  83 static list_t *list_free_thread_index;
  84
  85 #if defined(__LINUX__)
  86 /* XXX Remove for exact-GC. */
  87 bool threads_pthreads_implementation_nptl;
  88 #endif
  89
  90
  91 /* threads_preinit *************************************************************
  92
  93    Do some early initialization of stuff required.
  94
  95    ATTENTION: Do NOT use any Java heap allocation here, as gc_init()
  96    is called AFTER this function!
  97
  98 *******************************************************************************/
  99
 100 void threads_preinit(void)
 101 {
 102         threadobject *mainthread;
 103 #if defined(__LINUX__) && defined(_CS_GNU_LIBPTHREAD_VERSION)
 104         char         *pathbuf;
 105         size_t        len;
 106 #endif
 107
 108 #if defined(__LINUX__)
 109         /* XXX Remove for exact-GC. */
 110
 111         /* On Linux we need to check the pthread implementation. */
 112
 113         /* _CS_GNU_LIBPTHREAD_VERSION (GNU C library only; since glibc 2.3.2) */
 114         /* If the glibc is a pre-2.3.2 version, we fall back to
 115            linuxthreads. */
 116
 117 # if defined(_CS_GNU_LIBPTHREAD_VERSION)
 118         len = confstr(_CS_GNU_LIBPTHREAD_VERSION, NULL, (size_t) 0);
 119
 120         /* Some systems return as length 0 (maybe cross-compilation
 121            related).  In this case we also fall back to linuxthreads. */
 122
 123         if (len > 0) {
 124                 pathbuf = MNEW(char, len);
 125
 126                 (void) confstr(_CS_GNU_LIBPTHREAD_VERSION, pathbuf, len);
 127
 128                 if (strstr(pathbuf, "NPTL") != NULL)
 129                         threads_pthreads_implementation_nptl = true;
 130                 else
 131                         threads_pthreads_implementation_nptl = false;
 132         }
 133         else
 134                 threads_pthreads_implementation_nptl = false;
 135 # else
 136         threads_pthreads_implementation_nptl = false;
 137 # endif
 138 #endif
 139
 140         /* initialize the threads lists */
 141
 142         list_threads           = list_create(OFFSET(threadobject, linkage));
 143         list_free_thread_index = list_create(OFFSET(thread_index_t, linkage));
 144
 145         /* Initialize the threads implementation (sets the thinlock on the
 146            main thread). */
 147
 148         threads_impl_preinit();
 149
 150         /* create internal thread data-structure for the main thread */
 151
 152         mainthread = threads_thread_new();
 153
 154         /* thread is a Java thread and running */
 155
 156         mainthread->flags |= THREAD_FLAG_JAVA;
 157         mainthread->state = THREAD_STATE_RUNNABLE;
 158
 159         /* store the internal thread data-structure in the TSD */
 160
 161         threads_set_current_threadobject(mainthread);
 162
 163         /* initialize locking subsystems */
 164
 165         lock_init();
 166
 167         /* initialize the critical section */
 168
 169         critical_init();
 170 }
 171
 172
 173 /* threads_list_first **********************************************************
 174
 175    Return the first entry in the threads list.
 176
 177    NOTE: This function does not lock the lists.
 178
 179 *******************************************************************************/
 180
 181 threadobject *threads_list_first(void)
 182 {
 183         threadobject *t;
 184
 185         t = list_first_unsynced(list_threads);
 186
 187         return t;
 188 }
 189
 190
 191 /* threads_list_next ***********************************************************
 192
 193    Return the next entry in the threads list.
 194
 195    NOTE: This function does not lock the lists.
 196
 197 *******************************************************************************/
 198
 199 threadobject *threads_list_next(threadobject *t)
 200 {
 201         threadobject *next;
 202
 203         next = list_next_unsynced(list_threads, t);
 204
 205         return next;
 206 }
 207
 208
 209 /* threads_list_get_non_daemons ************************************************
 210
 211    Return the number of non-daemon threads.
 212
 213    NOTE: This function does a linear-search over the threads list,
 214          because it's only used for joining the threads.
 215
 216 *******************************************************************************/
 217
 218 s4 threads_list_get_non_daemons(void)
 219 {
 220         threadobject *t;
 221         s4            nondaemons;
 222
 223         /* lock the threads lists */
 224
 225         threads_list_lock();
 226
 227         nondaemons = 0;
 228
 229         for (t = threads_list_first(); t != NULL; t = threads_list_next(t)) {
 230                 if (!(t->flags & THREAD_FLAG_DAEMON))
 231                         nondaemons++;
 232         }
 233
 234         /* unlock the threads lists */
 235
 236         threads_list_unlock();
 237
 238         return nondaemons;
 239 }
 240
 241
 242 /* threads_thread_new **********************************************************
 243
 244    Allocates and initializes an internal thread data-structure and
 245    adds it to the threads list.
 246
 247 *******************************************************************************/
 248
 249 threadobject *threads_thread_new(void)
 250 {
 251         thread_index_t *ti;
 252         int32_t         index;
 253         threadobject   *t;
 254
 255         /* lock the threads-lists */
 256
 257         threads_list_lock();
 258
 259         /* Try to get a thread index from the free-list. */
 260
 261         ti = list_first_unsynced(list_free_thread_index);
 262
 263         /* Is a free thread index available? */
 264
 265         if (ti != NULL) {
 266                 /* Yes, remove it from the free list, get the index and free
 267                    the entry. */
 268
 269                 list_remove_unsynced(list_free_thread_index, ti);
 270
 271                 index = ti->index;
 272
 273                 FREE(ti, thread_index_t);
 274
 275 #if defined(ENABLE_STATISTICS)
 276                 if (opt_stat)
 277                         size_thread_index_t -= sizeof(thread_index_t);
 278 #endif
 279         }
 280         else {
 281                 /* Get a new the thread index. */
 282
 283                 index = list_threads->size + 1;
 284         }
 285
 286         /* Allocate a thread data structure. */
 287
 288 #if defined(ENABLE_GC_BOEHM)
 289         t = GCNEW_UNCOLLECTABLE(threadobject, 1);
 290 #else
 291         t = NEW(threadobject);
 292 #endif
 293
 294 #if defined(ENABLE_STATISTICS)
 295         if (opt_stat)
 296                 size_threadobject += sizeof(threadobject);
 297 #endif
 298
 299         /* Clear memory. */
 300
 301         MZERO(t, threadobject, 1);
 302
 303 #if defined(ENABLE_GC_CACAO)
 304         /* Register reference to java.lang.Thread with the GC. */
 305
 306         gc_reference_register((java_object_t **) &(t->object), GC_REFTYPE_THREADOBJECT);
 307 #endif
 308
 309         /* Pre-compute the thinlock-word. */
 310
 311         assert(index != 0);
 312
 313         t->index     = index;
 314         t->thinlock  = lock_pre_compute_thinlock(t->index);
 315         t->flags     = 0;
 316         t->state     = THREAD_STATE_NEW;
 317
 318 #if defined(ENABLE_GC_CACAO)
 319         t->flags    |= THREAD_FLAG_IN_NATIVE;
 320 #endif
 321
 322         /* Initialize the implementation-specific bits. */
 323
 324         threads_impl_thread_new(t);
 325
 326         /* Add the thread to the threads-list. */
 327
 328         list_add_last_unsynced(list_threads, t);
 329
 330         /* Unlock the threads-lists. */
 331
 332         threads_list_unlock();
 333
 334         return t;
 335 }
 336
 337
 338 /* threads_thread_free *********************************************************
 339
 340    Remove the thread from the threads-list and free the internal
 341    thread data structure.  The thread index is added to the
 342    thread-index free-list.
 343
 344    IN:
 345        t....thread data structure
 346
 347 *******************************************************************************/
 348
 349 void threads_thread_free(threadobject *t)
 350 {
 351         thread_index_t *ti;
 352
 353         /* Lock the threads lists. */
 354
 355         threads_list_lock();
 356
 357         /* Cleanup the implementation specific bits. */
 358
 359         threads_impl_thread_free(t);
 360
 361         /* Remove the thread from the threads-list. */
 362
 363         list_remove_unsynced(list_threads, t);
 364
 365         /* Add the thread index to the free list. */
 366
 367         ti = NEW(thread_index_t);
 368
 369 #if defined(ENABLE_STATISTICS)
 370         if (opt_stat)
 371                 size_thread_index_t += sizeof(thread_index_t);
 372 #endif
 373
 374         ti->index = t->index;
 375
 376         list_add_last_unsynced(list_free_thread_index, ti);
 377
 378         /* Free the thread data structure. */
 379
 380 #if defined(ENABLE_GC_BOEHM)
 381         GCFREE(t);
 382 #else
 383         FREE(t, threadobject);
 384 #endif
 385
 386 #if defined(ENABLE_STATISTICS)
 387         if (opt_stat)
 388                 size_threadobject -= sizeof(threadobject);
 389 #endif
 390
 391         /* Unlock the threads lists. */
 392
 393         threads_list_unlock();
 394 }
 395
 396
 397 /* threads_thread_start_internal ***********************************************
 398
 399    Start an internal thread in the JVM.  No Java thread objects exists
 400    so far.
 401
 402    IN:
 403       name.......UTF-8 name of the thread
 404       f..........function pointer to C function to start
 405
 406 *******************************************************************************/
 407
 408 bool threads_thread_start_internal(utf *name, functionptr f)
 409 {
 410         threadobject       *t;
 411         java_lang_Thread   *object;
 412 #if defined(WITH_CLASSPATH_GNU)
 413         java_lang_VMThread *vmt;
 414 #endif
 415
 416         /* Enter the join-mutex, so if the main-thread is currently
 417            waiting to join all threads, the number of non-daemon threads
 418            is correct. */
 419
 420         threads_mutex_join_lock();
 421
 422         /* create internal thread data-structure */
 423
 424         t = threads_thread_new();
 425
 426         t->flags |= THREAD_FLAG_INTERNAL | THREAD_FLAG_DAEMON;
 427
 428         /* The thread is flagged as (non-)daemon thread, we can leave the
 429            mutex. */
 430
 431         threads_mutex_join_unlock();
 432
 433         /* create the java thread object */
 434
 435         object = (java_lang_Thread *) builtin_new(class_java_lang_Thread);
 436
 437         /* XXX memory leak!!! */
 438         if (object == NULL)
 439                 return false;
 440
 441 #if defined(WITH_CLASSPATH_GNU)
 442         vmt = (java_lang_VMThread *) builtin_new(class_java_lang_VMThread);
 443
 444         /* XXX memory leak!!! */
 445         if (vmt == NULL)
 446                 return false;
 447
 448         LLNI_field_set_ref(vmt, thread, object);
 449         LLNI_field_set_val(vmt, vmdata, (java_lang_Object *) t);
 450
 451         LLNI_field_set_ref(object, vmThread, vmt);
 452 #elif defined(WITH_CLASSPATH_CLDC1_1)
 453         LLNI_field_set_val(object, vm_thread, (java_lang_Object *) t);
 454 #endif
 455
 456         t->object = LLNI_DIRECT(object);
 457
 458         /* set java.lang.Thread fields */
 459
 460 #if defined(WITH_CLASSPATH_GNU)
 461         LLNI_field_set_ref(object, name    , (java_lang_String *) javastring_new(name));
 462 #elif defined(WITH_CLASSPATH_CLDC1_1)
 463         /* FIXME: In cldc the name is a char[] */
 464 /*      LLNI_field_set_ref(object, name    , (java_chararray *) javastring_new(name)); */
 465         LLNI_field_set_ref(object, name    , NULL);
 466 #endif
 467
 468 #if defined(ENABLE_JAVASE)
 469         LLNI_field_set_val(object, daemon  , true);
 470 #endif
 471
 472         LLNI_field_set_val(object, priority, NORM_PRIORITY);
 473
 474         /* start the thread */
 475
 476         threads_impl_thread_start(t, f);
 477
 478         /* everything's ok */
 479
 480         return true;
 481 }
 482
 483
 484 /* threads_thread_start ********************************************************
 485
 486    Start a Java thread in the JVM.  Only the java thread object exists
 487    so far.
 488
 489    IN:
 490       object.....the java thread object java.lang.Thread
 491
 492 *******************************************************************************/
 493
 494 void threads_thread_start(java_handle_t *object)
 495 {
 496         java_lang_Thread   *o;
 497         threadobject       *thread;
 498 #if defined(WITH_CLASSPATH_GNU)
 499         java_lang_VMThread *vmt;
 500 #endif
 501
 502         o = (java_lang_Thread *) object;
 503
 504         /* Enter the join-mutex, so if the main-thread is currently
 505            waiting to join all threads, the number of non-daemon threads
 506            is correct. */
 507
 508         threads_mutex_join_lock();
 509
 510         /* create internal thread data-structure */
 511
 512         thread = threads_thread_new();
 513
 514         /* this is a normal Java thread */
 515
 516         thread->flags |= THREAD_FLAG_JAVA;
 517
 518 #if defined(ENABLE_JAVASE)
 519         /* is this a daemon thread? */
 520
 521         if (LLNI_field_direct(o, daemon) == true)
 522                 thread->flags |= THREAD_FLAG_DAEMON;
 523 #endif
 524
 525         /* The thread is flagged and (non-)daemon thread, we can leave the
 526            mutex. */
 527
 528         threads_mutex_join_unlock();
 529
 530         /* link the two objects together */
 531
 532         thread->object = LLNI_DIRECT(object);
 533
 534 #if defined(WITH_CLASSPATH_GNU)
 535         LLNI_field_get_ref(o, vmThread, vmt);
 536
 537         assert(vmt);
 538         assert(LLNI_field_direct(vmt, vmdata) == NULL);
 539
 540         LLNI_field_set_val(vmt, vmdata, (java_lang_Object *) thread);
 541 #elif defined(WITH_CLASSPATH_CLDC1_1)
 542         LLNI_field_set_val(o, vm_thread, (java_lang_Object *) thread);
 543 #endif
 544
 545         /* Start the thread.  Don't pass a function pointer (NULL) since
 546            we want Thread.run()V here. */
 547
 548         threads_impl_thread_start(thread, NULL);
 549 }
 550
 551
 552 /* threads_thread_print_info ***************************************************
 553
 554    Print information of the passed thread.
 555
 556 *******************************************************************************/
 557
 558 void threads_thread_print_info(threadobject *t)
 559 {
 560         java_lang_Thread *object;
 561 #if defined(WITH_CLASSPATH_GNU)
 562         java_lang_String *namestring;
 563 #endif
 564         utf              *name;
 565
 566         assert(t->state != THREAD_STATE_NEW);
 567
 568         /* the thread may be currently in initalization, don't print it */
 569
 570         object = (java_lang_Thread *) LLNI_WRAP(t->object);
 571
 572         if (object != NULL) {
 573                 /* get thread name */
 574
 575 #if defined(WITH_CLASSPATH_GNU)
 576                 LLNI_field_get_ref(object, name, namestring);
 577                 name = javastring_toutf((java_handle_t *) namestring, false);
 578 #elif defined(WITH_CLASSPATH_SUN) || defined(WITH_CLASSPATH_CLDC1_1)
 579                 /* FIXME: In cldc the name is a char[] */
 580 /*              name = object->name; */
 581                 name = utf_null;
 582 #else
 583 # error unknown classpath configuration
 584 #endif
 585
 586                 printf("\"");
 587                 utf_display_printable_ascii(name);
 588                 printf("\"");
 589
 590                 if (t->flags & THREAD_FLAG_DAEMON)
 591                         printf(" daemon");
 592
 593                 printf(" prio=%d", LLNI_field_direct(object, priority));
 594
 595 #if SIZEOF_VOID_P == 8
 596                 printf(" t=0x%016lx tid=0x%016lx (%ld)",
 597                            (ptrint) t, (ptrint) t->tid, (ptrint) t->tid);
 598 #else
 599                 printf(" t=0x%08x tid=0x%08x (%d)",
 600                            (ptrint) t, (ptrint) t->tid, (ptrint) t->tid);
 601 #endif
 602
 603                 printf(" index=%d", t->index);
 604
 605                 /* print thread state */
 606
 607                 switch (t->state) {
 608                 case THREAD_STATE_NEW:
 609                         printf(" new");
 610                         break;
 611                 case THREAD_STATE_RUNNABLE:
 612                         printf(" runnable");
 613                         break;
 614                 case THREAD_STATE_BLOCKED:
 615                         printf(" blocked");
 616                         break;
 617                 case THREAD_STATE_WAITING:
 618                         printf(" waiting");
 619                         break;
 620                 case THREAD_STATE_TIMED_WAITING:
 621                         printf(" waiting on condition");
 622                         break;
 623                 case THREAD_STATE_TERMINATED:
 624                         printf(" terminated");
 625                         break;
 626                 default:
 627                         vm_abort("threads_thread_print_info: unknown thread state %d",
 628                                          t->state);
 629                 }
 630         }
 631 }
 632
 633
 634 /* threads_get_current_tid *****************************************************
 635
 636    Return the tid of the current thread.
 637
 638    RETURN VALUE:
 639        the current tid
 640
 641 *******************************************************************************/
 642
 643 ptrint threads_get_current_tid(void)
 644 {
 645         threadobject *thread;
 646
 647         thread = THREADOBJECT;
 648
 649         /* this may happen during bootstrap */
 650
 651         if (thread == NULL)
 652                 return 0;
 653
 654         return (ptrint) thread->tid;
 655 }
 656
 657
 658 /* threads_thread_state_runnable ***********************************************
 659
 660    Set the current state of the given thread to THREAD_STATE_RUNNABLE.
 661
 662    NOTE: If the thread has already terminated, don't set the state.
 663          This is important for threads_detach_thread.
 664
 665 *******************************************************************************/
 666
 667 void threads_thread_state_runnable(threadobject *t)
 668 {
 669         /* Set the state inside a lock. */
 670
 671         threads_list_lock();
 672
 673         if (t->state != THREAD_STATE_TERMINATED)
 674                 t->state = THREAD_STATE_RUNNABLE;
 675
 676         threads_list_unlock();
 677 }
 678
 679
 680 /* threads_thread_state_waiting ************************************************
 681
 682    Set the current state of the given thread to THREAD_STATE_WAITING.
 683
 684    NOTE: If the thread has already terminated, don't set the state.
 685          This is important for threads_detach_thread.
 686
 687 *******************************************************************************/
 688
 689 void threads_thread_state_waiting(threadobject *t)
 690 {
 691         /* Set the state inside a lock. */
 692
 693         threads_list_lock();
 694
 695         if (t->state != THREAD_STATE_TERMINATED)
 696                 t->state = THREAD_STATE_WAITING;
 697
 698         threads_list_unlock();
 699 }
 700
 701
 702 /* threads_thread_state_timed_waiting ******************************************
 703
 704    Set the current state of the given thread to
 705    THREAD_STATE_TIMED_WAITING.
 706
 707    NOTE: If the thread has already terminated, don't set the state.
 708          This is important for threads_detach_thread.
 709
 710 *******************************************************************************/
 711
 712 void threads_thread_state_timed_waiting(threadobject *t)
 713 {
 714         /* Set the state inside a lock. */
 715
 716         threads_list_lock();
 717
 718         if (t->state != THREAD_STATE_TERMINATED)
 719                 t->state = THREAD_STATE_TIMED_WAITING;
 720
 721         threads_list_unlock();
 722 }
 723
 724
 725 /* threads_thread_state_terminated *********************************************
 726
 727    Set the current state of the given thread to
 728    THREAD_STATE_TERMINATED.
 729
 730 *******************************************************************************/
 731
 732 void threads_thread_state_terminated(threadobject *t)
 733 {
 734         /* set the state in the lock */
 735
 736         threads_list_lock();
 737
 738         t->state = THREAD_STATE_TERMINATED;
 739
 740         threads_list_unlock();
 741 }
 742
 743
 744 /* threads_thread_get_state ****************************************************
 745
 746    Returns the current state of the given thread.
 747
 748 *******************************************************************************/
 749
 750 utf *threads_thread_get_state(threadobject *t)
 751 {
 752         utf *u;
 753
 754         switch (t->state) {
 755         case THREAD_STATE_NEW:
 756                 u = utf_new_char("NEW");
 757                 break;
 758         case THREAD_STATE_RUNNABLE:
 759                 u = utf_new_char("RUNNABLE");
 760                 break;
 761         case THREAD_STATE_BLOCKED:
 762                 u = utf_new_char("BLOCKED");
 763                 break;
 764         case THREAD_STATE_WAITING:
 765                 u = utf_new_char("WAITING");
 766                 break;
 767         case THREAD_STATE_TIMED_WAITING:
 768                 u = utf_new_char("TIMED_WAITING");
 769                 break;
 770         case THREAD_STATE_TERMINATED:
 771                 u = utf_new_char("TERMINATED");
 772                 break;
 773         default:
 774                 vm_abort("threads_get_state: unknown thread state %d", t->state);
 775
 776                 /* keep compiler happy */
 777
 778                 u = NULL;
 779         }
 780
 781         return u;
 782 }
 783
 784
 785 /* threads_thread_is_alive *****************************************************
 786
 787    Returns if the give thread is alive.
 788
 789 *******************************************************************************/
 790
 791 bool threads_thread_is_alive(threadobject *t)
 792 {
 793         switch (t->state) {
 794         case THREAD_STATE_NEW:
 795         case THREAD_STATE_TERMINATED:
 796                 return false;
 797
 798         case THREAD_STATE_RUNNABLE:
 799         case THREAD_STATE_BLOCKED:
 800         case THREAD_STATE_WAITING:
 801         case THREAD_STATE_TIMED_WAITING:
 802                 return true;
 803
 804         default:
 805                 vm_abort("threads_thread_is_alive: unknown thread state %d", t->state);
 806         }
 807
 808         /* keep compiler happy */
 809
 810         return false;
 811 }
 812
 813
 814 /* threads_dump ****************************************************************
 815
 816    Dumps info for all threads running in the JVM.  This function is
 817    called when SIGQUIT (<ctrl>-\) is sent to CACAO.
 818
 819 *******************************************************************************/
 820
 821 void threads_dump(void)
 822 {
 823         threadobject *t;
 824
 825         /* XXX we should stop the world here */
 826
 827         /* lock the threads lists */
 828
 829         threads_list_lock();
 830
 831         printf("Full thread dump CACAO "VERSION":\n");
 832
 833         /* iterate over all started threads */
 834
 835         for (t = threads_list_first(); t != NULL; t = threads_list_next(t)) {
 836                 /* print thread info */
 837
 838                 printf("\n");
 839                 threads_thread_print_info(t);
 840                 printf("\n");
 841
 842                 /* print trace of thread */
 843
 844                 threads_thread_print_stacktrace(t);
 845         }
 846
 847         /* unlock the threads lists */
 848
 849         threads_list_unlock();
 850 }
 851
 852
 853 /* threads_thread_print_stacktrace *********************************************
 854
 855    Print the current stacktrace of the current thread.
 856
 857 *******************************************************************************/
 858
 859 void threads_thread_print_stacktrace(threadobject *thread)
 860 {
 861         stackframeinfo   *sfi;
 862         stacktracebuffer *stb;
 863         s4                dumpsize;
 864
 865         /* mark start of dump memory area */
 866
 867         dumpsize = dump_size();
 868
 869         /* create a stacktrace for the passed thread */
 870
 871         sfi = thread->_stackframeinfo;
 872
 873         stb = stacktrace_create(sfi);
 874
 875         /* print stacktrace */
 876
 877         if (stb != NULL)
 878                 stacktrace_print_trace_from_buffer(stb);
 879         else {
 880                 puts("\t<<No stacktrace available>>");
 881                 fflush(stdout);
 882         }
 883
 884         dump_release(dumpsize);
 885 }
 886
 887
 888 /* threads_print_stacktrace ****************************************************
 889
 890    Print the current stacktrace of the current thread.
 891
 892 *******************************************************************************/
 893
 894 void threads_print_stacktrace(void)
 895 {
 896         threadobject *thread;
 897
 898         thread = THREADOBJECT;
 899
 900         threads_thread_print_stacktrace(thread);
 901 }
 902
 903
 904 /*
 905  * These are local overrides for various environment variables in Emacs.
 906  * Please do not remove this and leave it at the end of the file, where
 907  * Emacs will automagically detect them.
 908  * ---------------------------------------------------------------------
 909  * Local variables:
 910  * mode: c
 911  * indent-tabs-mode: t
 912  * c-basic-offset: 4
 913  * tab-width: 4
 914  * End:
 915  * vim:noexpandtab:sw=4:ts=4:
 916  */