aboutsummaryrefslogtreecommitdiffstats
path: root/erts/include/internal/ethread.h
blob: 2682718962f2ebcc414fabc51cc15f2551b455e6 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
/*
 * %CopyrightBegin%
 *
 * Copyright Ericsson AB 2004-2013. All Rights Reserved.
 *
 * The contents of this file are subject to the Erlang Public License,
 * Version 1.1, (the "License"); you may not use this file except in
 * compliance with the License. You should have received a copy of the
 * Erlang Public License along with this software. If not, it can be
 * retrieved online at http://www.erlang.org/.
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 * the License for the specific language governing rights and limitations
 * under the License.
 *
 * %CopyrightEnd%
 */

/*
 * Description: Thread library for use in the ERTS and other OTP
 *              applications.
 * Author: Rickard Green
 */

#ifndef ETHREAD_H__
#define ETHREAD_H__

#ifndef ETHR_HAVE_ETHREAD_DEFINES
#  include "ethread_header_config.h"
#endif

#include <stdlib.h>
#include "erl_errno.h"

#if defined(DEBUG)
#  define ETHR_DEBUG
#endif

#if defined(__PPC__) || defined (__POWERPC)
/* OSE compiler should be fixed! */
#define __ppc__
#endif

#if defined(ETHR_DEBUG)
#  undef ETHR_XCHK
#  define  ETHR_XCHK 1
#else
#  ifndef ETHR_XCHK
#    define ETHR_XCHK 0
#  endif
#endif

#undef ETHR_INLINE
#if defined(__GNUC__)
#  define ETHR_INLINE __inline__
#elif defined(__WIN32__)
#  define ETHR_INLINE __forceinline
#endif
#if defined(ETHR_DEBUG) || !defined(ETHR_INLINE) || ETHR_XCHK \
    || (defined(__GNUC__) && defined(ERTS_MIXED_CYGWIN_VC))
#  undef ETHR_INLINE
#  define ETHR_INLINE 
#  undef ETHR_TRY_INLINE_FUNCS
#endif

/* Assume 64-byte cache line size */
#define ETHR_CACHE_LINE_SIZE 64
#define ETHR_CACHE_LINE_MASK (ETHR_CACHE_LINE_SIZE - 1)

#define ETHR_CACHE_LINE_ALIGN_SIZE(SZ) \
  (((((SZ) - 1) / ETHR_CACHE_LINE_SIZE) + 1) * ETHR_CACHE_LINE_SIZE)

#ifndef ETHR_INLINE_FUNC_NAME_
#  define ETHR_INLINE_FUNC_NAME_(X) X
#endif

#if !defined(__func__)
#  if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901L
#    if !defined(__GNUC__) ||  __GNUC__ < 2
#      define __func__ "[unknown_function]"
#    else
#      define __func__ __FUNCTION__
#    endif
#  endif
#endif

int ethr_assert_failed(const char *file, int line, const char *func, char *a);
#ifdef ETHR_DEBUG
#define ETHR_ASSERT(A) \
  ((void) ((A) ? 1 : ethr_assert_failed(__FILE__, __LINE__, __func__, #A)))
#else
#define ETHR_ASSERT(A) ((void) 1)
#endif

#if defined(__GNUC__)
#  define ETHR_PROTO_NORETURN__ void __attribute__((noreturn))
#  define ETHR_IMPL_NORETURN__ void
#elif defined(__WIN32__) && defined(_MSC_VER)
#  define ETHR_PROTO_NORETURN__ __declspec(noreturn) void
#  define ETHR_IMPL_NORETURN__ __declspec(noreturn) void
#else
#  define ETHR_PROTO_NORETURN__ void
#  define ETHR_IMPL_NORETURN__ void
#endif

#if defined(ETHR_PTHREADS)
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
 * The pthread implementation                                                *
\*                                                                           */

#if defined(__linux__) && !defined(_GNU_SOURCE)
#error "_GNU_SOURCE not defined. Please, compile all files with -D_GNU_SOURCE."
#endif

#if defined(ETHR_NEED_NPTL_PTHREAD_H)
#include <nptl/pthread.h>
#elif defined(ETHR_HAVE_MIT_PTHREAD_H)
#include <pthread/mit/pthread.h>
#elif defined(ETHR_HAVE_PTHREAD_H)
#include <pthread.h>
#endif

/* Types */

typedef pthread_t ethr_tid;

typedef pthread_key_t ethr_tsd_key;

#define ETHR_HAVE_ETHR_SIG_FUNCS 1

#if defined(PURIFY) || defined(VALGRIND)
#  define ETHR_FORCE_PTHREAD_RWLOCK
#  define ETHR_FORCE_PTHREAD_MUTEX
#endif

#if !defined(ETHR_FORCE_PTHREAD_RWLOCK)
#  define ETHR_USE_OWN_RWMTX_IMPL__
#endif

#if !defined(ETHR_FORCE_PTHREAD_MUTEX) && 0
#  define ETHR_USE_OWN_MTX_IMPL__
#endif

#elif defined(ETHR_WIN32_THREADS)
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
 * The native win32 threads implementation                                   *
\*                                                                           */

#if !defined(_WIN32_WINNT)
#error "_WIN32_WINNT not defined. Please, compile all files with -D_WIN32_WINNT=0x0403"
#elif _WIN32_WINNT < 0x0403
#error "_WIN32_WINNT defined to a value less than 0x0403. Please, compile all files with -D_WIN32_WINNT=0x0403"
#endif

#ifdef WIN32_LEAN_AND_MEAN
#  define ETHR_WIN32_LEAN_AND_MEAN_ALREADY_DEFINED
#else
#  define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>
#ifndef ETHR_WIN32_LEAN_AND_MEAN_ALREADY_DEFINED
#  undef WIN32_LEAN_AND_MEAN
#endif

#if defined(_MSC_VER)

#if ETHR_SIZEOF_LONG == 4
#define ETHR_HAVE_INT32_T 1
typedef long ethr_sint32_t;
typedef unsigned long ethr_uint32_t;
#endif

#if ETHR_SIZEOF___INT64 == 8
#define ETHR_HAVE_INT64_T 1
typedef __int64 ethr_sint64_t;
typedef unsigned __int64 ethr_uint64_t;
#endif

#endif

struct ethr_join_data_;

/* Types */
typedef struct {
    long id;
    struct ethr_join_data_ *jdata;
} ethr_tid; /* thread id type */

typedef DWORD ethr_tsd_key;

#undef ETHR_HAVE_ETHR_SIG_FUNCS

#define ETHR_USE_OWN_RWMTX_IMPL__

#define ETHR_YIELD() (Sleep(0), 0)

#elif defined(ETHR_OSE_THREADS)

#include "ose.h"
#undef NIL

#if defined(ETHR_HAVE_PTHREAD_H)
#include <pthread.h>
#endif

typedef struct {
  PROCESS id;
  unsigned int tsd_key_index;
  void *res;
} ethr_tid;

typedef OSPPDKEY ethr_tsd_key;

#undef ETHR_HAVE_ETHR_SIG_FUNCS

/* Out own RW mutexes are probably faster, but use OSEs mutexes */
#define ETHR_USE_OWN_RWMTX_IMPL__

#define ETHR_HAVE_THREAD_NAMES

#else /* No supported thread lib found */

#ifdef ETHR_NO_SUPP_THR_LIB_NOT_FATAL
#define ETHR_NO_THREAD_LIB
#else
#error "No supported thread lib found"
#endif

#endif

#ifndef ETHR_HAVE_INT32_T
#if ETHR_SIZEOF_INT == 4
#define ETHR_HAVE_INT32_T 1
typedef int ethr_sint32_t;
typedef unsigned int ethr_uint32_t;
#elif ETHR_SIZEOF_LONG == 4
#define ETHR_HAVE_INT32_T 1
typedef long ethr_sint32_t;
typedef unsigned long ethr_uint32_t;
#endif
#endif

#ifndef ETHR_HAVE_INT64_T
#if ETHR_SIZEOF_INT == 8
#define ETHR_HAVE_INT64_T 1
typedef int ethr_sint64_t;
typedef unsigned int ethr_uint64_t;
#elif ETHR_SIZEOF_LONG == 8
#define ETHR_HAVE_INT64_T 1
typedef long ethr_sint64_t;
typedef unsigned long ethr_uint64_t;
#elif ETHR_SIZEOF_LONG_LONG == 8
#define ETHR_HAVE_INT64_T 1
typedef long long ethr_sint64_t;
typedef unsigned long long ethr_uint64_t;
#endif
#endif

#if ETHR_SIZEOF_PTR == 4
#ifndef ETHR_HAVE_INT32_T
#error "No 32-bit integer type found"
#endif
typedef ethr_sint32_t ethr_sint_t;
typedef ethr_uint32_t ethr_uint_t;
#elif ETHR_SIZEOF_PTR == 8
#ifndef ETHR_HAVE_INT64_T
#error "No 64-bit integer type found"
#endif
typedef ethr_sint64_t ethr_sint_t;
typedef ethr_uint64_t ethr_uint_t;
#endif

#if defined(ETHR_SIZEOF___INT128_T) && ETHR_SIZEOF___INT128_T == 16
#define ETHR_HAVE_INT128_T
typedef __int128_t ethr_sint128_t;
typedef __uint128_t ethr_uint128_t;
#endif

#define ETHR_FATAL_ERROR__(ERR) \
  ethr_fatal_error__(__FILE__, __LINE__, __func__, (ERR))

ETHR_PROTO_NORETURN__ ethr_fatal_error__(const char *file,
					 int line,
					 const char *func,
					 int err);

#if !defined(__GNUC__)
#  define ETHR_AT_LEAST_GCC_VSN__(MAJ, MIN, PL) 0
#elif !defined(__GNUC_MINOR__)
#  define ETHR_AT_LEAST_GCC_VSN__(MAJ, MIN, PL) \
  ((__GNUC__ << 24) >= (((MAJ) << 24) | ((MIN) << 12) | (PL)))
#elif !defined(__GNUC_PATCHLEVEL__)
#  define ETHR_AT_LEAST_GCC_VSN__(MAJ, MIN, PL) \
  (((__GNUC__ << 24) | (__GNUC_MINOR__ << 12)) >= (((MAJ) << 24) | ((MIN) << 12) | (PL)))
#else
#  define ETHR_AT_LEAST_GCC_VSN__(MAJ, MIN, PL) \
  (((__GNUC__ << 24) | (__GNUC_MINOR__ << 12) | __GNUC_PATCHLEVEL__) >= (((MAJ) << 24) | ((MIN) << 12) | (PL)))
#endif

#if !ETHR_AT_LEAST_GCC_VSN__(2, 96, 0)
#define __builtin_expect(X, Y) (X)
#endif

#if ETHR_AT_LEAST_GCC_VSN__(3, 1, 1)
#  define ETHR_CHOOSE_EXPR __builtin_choose_expr
#else
#  define ETHR_CHOOSE_EXPR(B, E1, E2) ((B) ? (E1) : (E2))
#endif

#if ((defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))) \
     || (defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_AMD64))))
#  define ETHR_X86_RUNTIME_CONF__

#  define ETHR_X86_RUNTIME_CONF_HAVE_DW_CMPXCHG__ \
  (__builtin_expect(ethr_runtime__.conf.have_dw_cmpxchg != 0, 1))
#  define ETHR_X86_RUNTIME_CONF_HAVE_NO_DW_CMPXCHG__ \
  (__builtin_expect(ethr_runtime__.conf.have_dw_cmpxchg == 0, 0))
#  define ETHR_X86_RUNTIME_CONF_HAVE_SSE2__ \
  (__builtin_expect(ethr_runtime__.conf.have_sse2 != 0, 1))
#  define ETHR_X86_RUNTIME_CONF_HAVE_NO_SSE2__ \
  (__builtin_expect(ethr_runtime__.conf.have_sse2 == 0, 0))
#endif

#if (defined(__GNUC__) \
     && !defined(ETHR_PPC_HAVE_LWSYNC) \
     && !defined(ETHR_PPC_HAVE_NO_LWSYNC) \
     && (defined(__powerpc__) || defined(__ppc__) || defined(__powerpc64__)))
#  define ETHR_PPC_RUNTIME_CONF__

#  define ETHR_PPC_RUNTIME_CONF_HAVE_LWSYNC__ \
  (__builtin_expect(ethr_runtime__.conf.have_lwsync != 0, 1))  
#  define ETHR_PPC_RUNTIME_CONF_HAVE_NO_LWSYNC__ \
  (__builtin_expect(ethr_runtime__.conf.have_lwsync == 0, 0))
#endif

typedef struct {
#if defined(ETHR_X86_RUNTIME_CONF__)
    int have_dw_cmpxchg;
    int have_sse2;
#endif
#if defined(ETHR_PPC_RUNTIME_CONF__)
    int have_lwsync;
#endif
    int dummy;
} ethr_runtime_conf_t;


typedef union {
    ethr_runtime_conf_t conf;
    char pad__[ETHR_CACHE_LINE_ALIGN_SIZE(sizeof(ethr_runtime_conf_t))+ETHR_CACHE_LINE_SIZE];
} ethr_runtime_t;


extern ethr_runtime_t ethr_runtime__;

/* For native CPU-optimised atomics, spinlocks, and rwlocks. */
#if !defined(ETHR_DISABLE_NATIVE_IMPLS)
#  if defined(__GNUC__)
#    if defined(ETHR_PREFER_GCC_NATIVE_IMPLS)
#      include "gcc/ethread.h"
#    elif defined(ETHR_PREFER_LIBATOMIC_OPS_NATIVE_IMPLS)
#      include "libatomic_ops/ethread.h"
#    endif
#    if !defined(ETHR_HAVE_NATIVE_ATOMIC32) && !defined(ETHR_HAVE_NATIVE_ATOMIC64)
#      if ETHR_SIZEOF_PTR == 4
#        if defined(__i386__)
#          include "i386/ethread.h"
#        elif (defined(__powerpc__)||defined(__ppc__))&&!defined(__powerpc64__)
#          include "ppc32/ethread.h"
#        elif defined(__sparc__)
#          include "sparc32/ethread.h"
#        elif defined(__tile__)
#          include "tile/ethread.h"
#        endif
#      elif ETHR_SIZEOF_PTR == 8
#        if defined(__x86_64__)
#          include "x86_64/ethread.h"
#        elif defined(__sparc__) && defined(__arch64__)
#          include "sparc64/ethread.h"
#        endif
#      endif
#      include "gcc/ethread.h"
#      include "libatomic_ops/ethread.h"
#    endif
#  elif defined(ETHR_HAVE_LIBATOMIC_OPS)
#    include "libatomic_ops/ethread.h"
#  elif defined(ETHR_WIN32_THREADS)
#    include "win/ethread.h"
#  endif
#endif /* !ETHR_DISABLE_NATIVE_IMPLS */

#if !defined(ETHR_HAVE_NATIVE_ATOMIC32) && !defined(ETHR_HAVE_NATIVE_ATOMIC64) && !defined(ETHR_DISABLE_NATIVE_IMPLS) && defined(ETHR_SMP_REQUIRE_NATIVE_IMPLS)
#error "No native ethread implementation found. If you want to use fallbacks you have to disable native ethread support with configure."
#endif

#include "ethr_atomics.h" /* The atomics API */

#if defined(__GNUC__) && !defined(ETHR_OSE_THREADS)
#  ifndef ETHR_SPIN_BODY
#    if defined(__i386__) || defined(__x86_64__)
#      define ETHR_SPIN_BODY __asm__ __volatile__("rep;nop" : : : "memory")
#    elif defined(__ia64__)
#      define ETHR_SPIN_BODY __asm__ __volatile__("hint @pause" : : : "memory")
#    elif defined(__sparc__)
#      define ETHR_SPIN_BODY __asm__ __volatile__("membar #LoadLoad")
#    else
#      define ETHR_SPIN_BODY ETHR_COMPILER_BARRIER
#    endif
#  endif
#elif defined(ETHR_WIN32_THREADS)
#  ifndef ETHR_SPIN_BODY
#    define ETHR_SPIN_BODY do {YieldProcessor();ETHR_COMPILER_BARRIER;} while(0)
#  endif
#elif defined(ETHR_OSE_THREADS)
#  ifndef ETHR_SPIN_BODY
#    define ETHR_SPIN_BODY set_pri(get_pri(current_process()))
#  else
#    error "OSE should use set_pri(get_pri(current_process()))"
#  endif
#endif

#ifndef ETHR_OSE_THREADS
#define ETHR_YIELD_AFTER_BUSY_LOOPS 50
#else
#define ETHR_YIELD_AFTER_BUSY_LOOPS 0
#endif


#ifndef ETHR_SPIN_BODY
#  define ETHR_SPIN_BODY ETHR_COMPILER_BARRIER
#endif

#ifndef ETHR_YIELD
#  if defined(ETHR_HAVE_SCHED_YIELD)
#    ifdef ETHR_HAVE_SCHED_H
#      include <sched.h>
#    endif
#    include <errno.h>
#    if defined(ETHR_SCHED_YIELD_RET_INT)
#      define ETHR_YIELD() (sched_yield() < 0 ? errno : 0)
#    else
#      define ETHR_YIELD() (sched_yield(), 0)
#    endif
#  elif defined(ETHR_HAVE_PTHREAD_YIELD)
#    if defined(ETHR_PTHREAD_YIELD_RET_INT)
#      define ETHR_YIELD() pthread_yield()
#    else
#      define ETHR_YIELD() (pthread_yield(), 0)
#    endif
#  elif defined(ETHR_OSE_THREADS)
#    define ETHR_YIELD() (set_pri(get_pri(current_process())), 0)
#  else
#    define ETHR_YIELD() (ethr_compiler_barrier(), 0)
#  endif
#endif

#if defined(VALGRIND) || defined(ETHR_OSE_THREADS)
/* mutex as fallback for spinlock for VALGRIND and OSE.
   OSE cannot use spinlocks as processes working on the
   same execution unit have a tendency to deadlock.
 */
#  undef ETHR_HAVE_NATIVE_SPINLOCKS
#  undef ETHR_HAVE_NATIVE_RWSPINLOCKS
#else
#  include "ethr_optimized_fallbacks.h"
#endif

typedef struct {
    void *(*thread_create_prepare_func)(void);
    void (*thread_create_parent_func)(void *);
    void (*thread_create_child_func)(void *);
} ethr_init_data;

#define ETHR_INIT_DATA_DEFAULT_INITER {NULL, NULL, NULL}

typedef struct {
    void *(*alloc)(size_t);
    void *(*realloc)(void *, size_t);
    void (*free)(void *);
} ethr_memory_allocator;

#define ETHR_MEM_ALLOC_DEF_INITER__ {NULL, NULL, NULL}

typedef struct {
    ethr_memory_allocator std;
    ethr_memory_allocator sl;
    ethr_memory_allocator ll;
} ethr_memory_allocators;

#define ETHR_MEM_ALLOCS_DEF_INITER__					\
  {ETHR_MEM_ALLOC_DEF_INITER__,						\
   ETHR_MEM_ALLOC_DEF_INITER__,						\
   ETHR_MEM_ALLOC_DEF_INITER__}

typedef struct {
    ethr_memory_allocators mem;
    int reader_groups;
    int main_threads;
} ethr_late_init_data;

#define ETHR_LATE_INIT_DATA_DEFAULT_INITER				\
  {ETHR_MEM_ALLOCS_DEF_INITER__, 0, 0}

typedef struct {
    int detached;			/* boolean (default false) */
    int suggested_stack_size;		/* kilo words (default sys dependent) */
#ifdef ETHR_OSE_THREADS
    char *name;
    U32 coreNo;
#endif
} ethr_thr_opts;

#if defined(ETHR_OSE_THREADS)
/* Default ethr name is big as we want to be able to sprint stuff in there */
#define ETHR_THR_OPTS_DEFAULT_INITER \
   {0, -1, "ethread", 0}
#else
#define ETHR_THR_OPTS_DEFAULT_INITER {0, -1}
#endif


#if !defined(ETHR_TRY_INLINE_FUNCS) || defined(ETHR_AUX_IMPL__)
#  define ETHR_NEED_SPINLOCK_PROTOTYPES__
#  define ETHR_NEED_RWSPINLOCK_PROTOTYPES__
#endif

int ethr_init(ethr_init_data *);
int ethr_late_init(ethr_late_init_data *);
int ethr_install_exit_handler(void (*funcp)(void));
int ethr_thr_create(ethr_tid *, void * (*)(void *), void *, ethr_thr_opts *);
int ethr_thr_join(ethr_tid, void **);
int ethr_thr_detach(ethr_tid);
void ethr_thr_exit(void *);
ethr_tid ethr_self(void);
int ethr_equal_tids(ethr_tid, ethr_tid);

int ethr_tsd_key_create(ethr_tsd_key *,char *);
int ethr_tsd_key_delete(ethr_tsd_key);
int ethr_tsd_set(ethr_tsd_key, void *);
void *ethr_tsd_get(ethr_tsd_key);

#ifdef ETHR_HAVE_ETHR_SIG_FUNCS
#include <signal.h>
int ethr_sigmask(int how, const sigset_t *set, sigset_t *oset);
int ethr_sigwait(const sigset_t *set, int *sig);
#endif

void ethr_compiler_barrier(void);

#if defined(ETHR_HAVE_NATIVE_SPINLOCKS)
typedef ethr_native_spinlock_t ethr_spinlock_t;
#elif defined(__WIN32__)
typedef CRITICAL_SECTION ethr_spinlock_t;
#else
typedef pthread_mutex_t ethr_spinlock_t;
#endif

#ifdef ETHR_NEED_SPINLOCK_PROTOTYPES__
int ethr_spinlock_init(ethr_spinlock_t *);
int ethr_spinlock_destroy(ethr_spinlock_t *);
void ethr_spin_unlock(ethr_spinlock_t *);
void ethr_spin_lock(ethr_spinlock_t *);
#endif

#if defined(ETHR_TRY_INLINE_FUNCS) || defined(ETHR_AUX_IMPL__)

static ETHR_INLINE int
ETHR_INLINE_FUNC_NAME_(ethr_spinlock_init)(ethr_spinlock_t *lock)
{
#ifdef ETHR_HAVE_NATIVE_SPINLOCKS
    ethr_native_spinlock_init(lock);
    return 0;
#elif defined(__WIN32__)
    if (!InitializeCriticalSectionAndSpinCount((CRITICAL_SECTION *) lock, INT_MAX))
	return ethr_win_get_errno__();
    return 0;
#else
    return pthread_mutex_init((pthread_mutex_t *) lock, NULL);
#endif
}

static ETHR_INLINE int
ETHR_INLINE_FUNC_NAME_(ethr_spinlock_destroy)(ethr_spinlock_t *lock)
{
#ifdef ETHR_HAVE_NATIVE_SPINLOCKS
    return ethr_native_spinlock_destroy(lock);
#elif defined(__WIN32__)
    DeleteCriticalSection((CRITICAL_SECTION *) lock);
    return 0;
#else
    return pthread_mutex_destroy((pthread_mutex_t *) lock);
#endif
}

static ETHR_INLINE void
ETHR_INLINE_FUNC_NAME_(ethr_spin_unlock)(ethr_spinlock_t *lock)
{
#ifdef ETHR_HAVE_NATIVE_SPINLOCKS
    ethr_native_spin_unlock(lock);
#elif defined(__WIN32__)
    LeaveCriticalSection((CRITICAL_SECTION *) lock);
#else
    int err = pthread_mutex_unlock((pthread_mutex_t *) lock);
    if (err)
	ETHR_FATAL_ERROR__(err);
#endif
}

static ETHR_INLINE void
ETHR_INLINE_FUNC_NAME_(ethr_spin_lock)(ethr_spinlock_t *lock)
{
#ifdef ETHR_HAVE_NATIVE_SPINLOCKS
    ethr_native_spin_lock(lock);
#elif defined(__WIN32__)
    EnterCriticalSection((CRITICAL_SECTION *) lock);
#else
    int err = pthread_mutex_lock((pthread_mutex_t *) lock);
    if (err)
	ETHR_FATAL_ERROR__(err);
#endif
}

#endif /* ETHR_TRY_INLINE_FUNCS */

typedef struct ethr_ts_event_ ethr_ts_event; /* Needed by ethr_mutex.h */

#if defined(ETHR_WIN32_THREADS)
#  include "win/ethr_event.h"
#elif defined(ETHR_PTHREADS)
#  include "pthread/ethr_event.h"
#elif defined(ETHR_OSE_THREADS)
#  include "ose/ethr_event.h"
#endif

int ethr_set_main_thr_status(int, int);
int ethr_get_main_thr_status(int *);

struct ethr_ts_event_ {
    ethr_ts_event *next;
    ethr_ts_event *prev;
    ethr_event event;
    void *udata;
    ethr_atomic32_t uaflgs;
    unsigned uflgs;
    unsigned iflgs;		/* for ethr lib only */
    short rgix;			/* for ethr lib only */
    short mtix;			/* for ethr lib only */
};

#define ETHR_TS_EV_ETHREAD	(((unsigned) 1) << 0)
#define ETHR_TS_EV_INITED	(((unsigned) 1) << 1)
#define ETHR_TS_EV_TMP		(((unsigned) 1) << 2)
#define ETHR_TS_EV_MAIN_THR	(((unsigned) 1) << 3)

int ethr_get_tmp_ts_event__(ethr_ts_event **tsepp);
int ethr_free_ts_event__(ethr_ts_event *tsep);
int ethr_make_ts_event__(ethr_ts_event **tsepp);

#if !defined(ETHR_TRY_INLINE_FUNCS) || defined(ETHREAD_IMPL__)
ethr_ts_event *ethr_get_ts_event(void);
void ethr_leave_ts_event(ethr_ts_event *);
#endif

#if defined(ETHR_PTHREADS)

#if defined(ETHR_TRY_INLINE_FUNCS) || defined(ETHREAD_IMPL__)

extern pthread_key_t ethr_ts_event_key__;

static ETHR_INLINE ethr_ts_event *
ETHR_INLINE_FUNC_NAME_(ethr_get_ts_event)(void)
{
    ethr_ts_event *tsep = pthread_getspecific(ethr_ts_event_key__);
    if (!tsep) {
	int res = ethr_make_ts_event__(&tsep);
	if (res != 0)
	    ETHR_FATAL_ERROR__(res);
	ETHR_ASSERT(tsep);
    }
    return tsep;
}

static ETHR_INLINE void
ETHR_INLINE_FUNC_NAME_(ethr_leave_ts_event)(ethr_ts_event *tsep)
{

}

#endif

#elif defined(ETHR_WIN32_THREADS)

#if defined(ETHR_TRY_INLINE_FUNCS) || defined(ETHREAD_IMPL__)

extern DWORD ethr_ts_event_key__;

static ETHR_INLINE ethr_ts_event *
ETHR_INLINE_FUNC_NAME_(ethr_get_ts_event)(void)
{
    ethr_ts_event *tsep = TlsGetValue(ethr_ts_event_key__);
    if (!tsep) {
	int res = ethr_get_tmp_ts_event__(&tsep);
	if (res != 0)
	    ETHR_FATAL_ERROR__(res);
	ETHR_ASSERT(tsep);
    }
    return tsep;
}

static ETHR_INLINE void
ETHR_INLINE_FUNC_NAME_(ethr_leave_ts_event)(ethr_ts_event *tsep)
{
    if (tsep->iflgs & ETHR_TS_EV_TMP) {
	int res = ethr_free_ts_event__(tsep);
	if (res != 0)
	    ETHR_FATAL_ERROR__(res);
    }
}

#endif

#elif  defined (ETHR_OSE_THREADS)

#if defined(ETHR_TRY_INLINE_FUNCS) || defined(ETHREAD_IMPL__)

extern ethr_tsd_key ethr_ts_event_key__;

static ETHR_INLINE ethr_ts_event *
ETHR_INLINE_FUNC_NAME_(ethr_get_ts_event)(void)
{
    ethr_ts_event *tsep = *(ethr_ts_event**)ose_get_ppdata(ethr_ts_event_key__);
    if (!tsep) {
	int res = ethr_get_tmp_ts_event__(&tsep);
	if (res != 0)
	    ETHR_FATAL_ERROR__(res);
	ETHR_ASSERT(tsep);
    }
    return tsep;
}

static ETHR_INLINE void
ETHR_INLINE_FUNC_NAME_(ethr_leave_ts_event)(ethr_ts_event *tsep)
{
    if (tsep->iflgs & ETHR_TS_EV_TMP) {
	int res = ethr_free_ts_event__(tsep);
	if (res != 0)
	    ETHR_FATAL_ERROR__(res);
    }
}

#endif

#endif

#include "ethr_mutex.h" /* Need atomic declarations and tse */

#ifdef ETHR_HAVE_NATIVE_RWSPINLOCKS
typedef ethr_native_rwlock_t ethr_rwlock_t;
#else
typedef ethr_rwmutex ethr_rwlock_t;
#endif

#ifdef ETHR_NEED_RWSPINLOCK_PROTOTYPES__
int ethr_rwlock_init(ethr_rwlock_t *);
int ethr_rwlock_destroy(ethr_rwlock_t *);
void ethr_read_unlock(ethr_rwlock_t *);
void ethr_read_lock(ethr_rwlock_t *);
void ethr_write_unlock(ethr_rwlock_t *);
void ethr_write_lock(ethr_rwlock_t *);
#endif

#if defined(ETHR_TRY_INLINE_FUNCS) || defined(ETHR_AUX_IMPL__)

static ETHR_INLINE int
ETHR_INLINE_FUNC_NAME_(ethr_rwlock_init)(ethr_rwlock_t *lock)
{
#ifdef ETHR_HAVE_NATIVE_RWSPINLOCKS
    ethr_native_rwlock_init(lock);
    return 0;
#else
    return ethr_rwmutex_init_opt((ethr_rwmutex *) lock, NULL);
#endif
}

static ETHR_INLINE int
ETHR_INLINE_FUNC_NAME_(ethr_rwlock_destroy)(ethr_rwlock_t *lock)
{
#ifdef ETHR_HAVE_NATIVE_RWSPINLOCKS
    return ethr_native_rwlock_destroy(lock);
#else
    return ethr_rwmutex_destroy((ethr_rwmutex *) lock);
#endif
}

static ETHR_INLINE void
ETHR_INLINE_FUNC_NAME_(ethr_read_unlock)(ethr_rwlock_t *lock)
{
#ifdef ETHR_HAVE_NATIVE_RWSPINLOCKS
    ethr_native_read_unlock(lock);
#else
    ethr_rwmutex_runlock((ethr_rwmutex *) lock);
#endif
}

static ETHR_INLINE void
ETHR_INLINE_FUNC_NAME_(ethr_read_lock)(ethr_rwlock_t *lock)
{
#ifdef ETHR_HAVE_NATIVE_RWSPINLOCKS
    ethr_native_read_lock(lock);
#else
    ethr_rwmutex_rlock((ethr_rwmutex *) lock);
#endif
}

static ETHR_INLINE void
ETHR_INLINE_FUNC_NAME_(ethr_write_unlock)(ethr_rwlock_t *lock)
{
#ifdef ETHR_HAVE_NATIVE_RWSPINLOCKS
    ethr_native_write_unlock(lock);
#else
    ethr_rwmutex_rwunlock((ethr_rwmutex *) lock);
#endif
}

static ETHR_INLINE void
ETHR_INLINE_FUNC_NAME_(ethr_write_lock)(ethr_rwlock_t *lock)
{
#ifdef ETHR_HAVE_NATIVE_RWSPINLOCKS
    ethr_native_write_lock(lock);
#else
    ethr_rwmutex_rwlock((ethr_rwmutex *) lock);
#endif
}

#endif /* ETHR_TRY_INLINE_FUNCS */

#endif /* #ifndef ETHREAD_H__ */