8dfbbe83044144b33b799eafe2aca638b8736289
[gcc.git] / gcc / ada / s-osinte-linux.ads
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
4 -- --
5 -- S Y S T E M . O S _ I N T E R F A C E --
6 -- --
7 -- S p e c --
8 -- --
9 -- Copyright (C) 1991-1994, Florida State University --
10 -- Copyright (C) 1995-2015, Free Software Foundation, Inc. --
11 -- --
12 -- GNAT is free software; you can redistribute it and/or modify it under --
13 -- terms of the GNU General Public License as published by the Free Soft- --
14 -- ware Foundation; either version 3, or (at your option) any later ver- --
15 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
16 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
17 -- or FITNESS FOR A PARTICULAR PURPOSE. --
18 -- --
19 -- As a special exception under Section 7 of GPL version 3, you are granted --
20 -- additional permissions described in the GCC Runtime Library Exception, --
21 -- version 3.1, as published by the Free Software Foundation. --
22 -- --
23 -- You should have received a copy of the GNU General Public License and --
24 -- a copy of the GCC Runtime Library Exception along with this program; --
25 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
26 -- <http://www.gnu.org/licenses/>. --
27 -- --
28 -- GNARL was developed by the GNARL team at Florida State University. --
29 -- Extensive contributions were provided by Ada Core Technologies, Inc. --
30 -- --
31 ------------------------------------------------------------------------------
32
33 -- This is a GNU/Linux (GNU/LinuxThreads) version of this package
34
35 -- This package encapsulates all direct interfaces to OS services
36 -- that are needed by the tasking run-time (libgnarl).
37
38 -- PLEASE DO NOT add any with-clauses to this package or remove the pragma
39 -- Preelaborate. This package is designed to be a bottom-level (leaf) package.
40
41 with Ada.Unchecked_Conversion;
42 with Interfaces.C;
43 with System.Linux;
44 with System.OS_Constants;
45
46 package System.OS_Interface is
47 pragma Preelaborate;
48
49 pragma Linker_Options ("-lpthread");
50 pragma Linker_Options ("-lrt");
51 -- Needed for clock_getres with glibc versions prior to 2.17
52
53 subtype int is Interfaces.C.int;
54 subtype char is Interfaces.C.char;
55 subtype short is Interfaces.C.short;
56 subtype long is Interfaces.C.long;
57 subtype unsigned is Interfaces.C.unsigned;
58 subtype unsigned_short is Interfaces.C.unsigned_short;
59 subtype unsigned_long is Interfaces.C.unsigned_long;
60 subtype unsigned_char is Interfaces.C.unsigned_char;
61 subtype plain_char is Interfaces.C.plain_char;
62 subtype size_t is Interfaces.C.size_t;
63
64 -----------
65 -- Errno --
66 -----------
67
68 function errno return int;
69 pragma Import (C, errno, "__get_errno");
70
71 EAGAIN : constant := System.Linux.EAGAIN;
72 EINTR : constant := System.Linux.EINTR;
73 EINVAL : constant := System.Linux.EINVAL;
74 ENOMEM : constant := System.Linux.ENOMEM;
75 EPERM : constant := System.Linux.EPERM;
76 ETIMEDOUT : constant := System.Linux.ETIMEDOUT;
77
78 -------------
79 -- Signals --
80 -------------
81
82 Max_Interrupt : constant := 63;
83 type Signal is new int range 0 .. Max_Interrupt;
84 for Signal'Size use int'Size;
85
86 SIGHUP : constant := System.Linux.SIGHUP;
87 SIGINT : constant := System.Linux.SIGINT;
88 SIGQUIT : constant := System.Linux.SIGQUIT;
89 SIGILL : constant := System.Linux.SIGILL;
90 SIGTRAP : constant := System.Linux.SIGTRAP;
91 SIGIOT : constant := System.Linux.SIGIOT;
92 SIGABRT : constant := System.Linux.SIGABRT;
93 SIGFPE : constant := System.Linux.SIGFPE;
94 SIGKILL : constant := System.Linux.SIGKILL;
95 SIGBUS : constant := System.Linux.SIGBUS;
96 SIGSEGV : constant := System.Linux.SIGSEGV;
97 SIGPIPE : constant := System.Linux.SIGPIPE;
98 SIGALRM : constant := System.Linux.SIGALRM;
99 SIGTERM : constant := System.Linux.SIGTERM;
100 SIGUSR1 : constant := System.Linux.SIGUSR1;
101 SIGUSR2 : constant := System.Linux.SIGUSR2;
102 SIGCLD : constant := System.Linux.SIGCLD;
103 SIGCHLD : constant := System.Linux.SIGCHLD;
104 SIGPWR : constant := System.Linux.SIGPWR;
105 SIGWINCH : constant := System.Linux.SIGWINCH;
106 SIGURG : constant := System.Linux.SIGURG;
107 SIGPOLL : constant := System.Linux.SIGPOLL;
108 SIGIO : constant := System.Linux.SIGIO;
109 SIGLOST : constant := System.Linux.SIGLOST;
110 SIGSTOP : constant := System.Linux.SIGSTOP;
111 SIGTSTP : constant := System.Linux.SIGTSTP;
112 SIGCONT : constant := System.Linux.SIGCONT;
113 SIGTTIN : constant := System.Linux.SIGTTIN;
114 SIGTTOU : constant := System.Linux.SIGTTOU;
115 SIGVTALRM : constant := System.Linux.SIGVTALRM;
116 SIGPROF : constant := System.Linux.SIGPROF;
117 SIGXCPU : constant := System.Linux.SIGXCPU;
118 SIGXFSZ : constant := System.Linux.SIGXFSZ;
119 SIGUNUSED : constant := System.Linux.SIGUNUSED;
120 SIGSTKFLT : constant := System.Linux.SIGSTKFLT;
121 SIGLTHRRES : constant := System.Linux.SIGLTHRRES;
122 SIGLTHRCAN : constant := System.Linux.SIGLTHRCAN;
123 SIGLTHRDBG : constant := System.Linux.SIGLTHRDBG;
124
125 SIGADAABORT : constant := SIGABRT;
126 -- Change this to use another signal for task abort. SIGTERM might be a
127 -- good one.
128
129 type Signal_Set is array (Natural range <>) of Signal;
130
131 Unmasked : constant Signal_Set := (
132 SIGTRAP,
133 -- To enable debugging on multithreaded applications, mark SIGTRAP to
134 -- be kept unmasked.
135
136 SIGBUS,
137
138 SIGTTIN, SIGTTOU, SIGTSTP,
139 -- Keep these three signals unmasked so that background processes and IO
140 -- behaves as normal "C" applications
141
142 SIGPROF,
143 -- To avoid confusing the profiler
144
145 SIGKILL, SIGSTOP,
146 -- These two signals actually can't be masked (POSIX won't allow it)
147
148 SIGLTHRRES, SIGLTHRCAN, SIGLTHRDBG);
149 -- These three signals are used by GNU/LinuxThreads starting from glibc
150 -- 2.1 (future 2.2).
151
152 Reserved : constant Signal_Set := (SIGVTALRM, SIGUNUSED);
153 -- Not clear why these two signals are reserved. Perhaps they are not
154 -- supported by this version of GNU/Linux ???
155
156 type sigset_t is private;
157
158 function sigaddset (set : access sigset_t; sig : Signal) return int;
159 pragma Import (C, sigaddset, "sigaddset");
160
161 function sigdelset (set : access sigset_t; sig : Signal) return int;
162 pragma Import (C, sigdelset, "sigdelset");
163
164 function sigfillset (set : access sigset_t) return int;
165 pragma Import (C, sigfillset, "sigfillset");
166
167 function sigismember (set : access sigset_t; sig : Signal) return int;
168 pragma Import (C, sigismember, "sigismember");
169
170 function sigemptyset (set : access sigset_t) return int;
171 pragma Import (C, sigemptyset, "sigemptyset");
172
173 type union_type_3 is new String (1 .. 116);
174 type siginfo_t is record
175 si_signo : int;
176 si_code : int;
177 si_errno : int;
178 X_data : union_type_3;
179 end record;
180 pragma Convention (C, siginfo_t);
181
182 type struct_sigaction is record
183 sa_handler : System.Address;
184 sa_mask : sigset_t;
185 sa_flags : Interfaces.C.unsigned_long;
186 sa_restorer : System.Address;
187 end record;
188 pragma Convention (C, struct_sigaction);
189
190 type struct_sigaction_ptr is access all struct_sigaction;
191
192 type Machine_State is record
193 eip : unsigned_long;
194 ebx : unsigned_long;
195 esp : unsigned_long;
196 ebp : unsigned_long;
197 esi : unsigned_long;
198 edi : unsigned_long;
199 end record;
200 type Machine_State_Ptr is access all Machine_State;
201
202 SA_SIGINFO : constant := System.Linux.SA_SIGINFO;
203 SA_ONSTACK : constant := System.Linux.SA_ONSTACK;
204
205 SIG_BLOCK : constant := 0;
206 SIG_UNBLOCK : constant := 1;
207 SIG_SETMASK : constant := 2;
208
209 SIG_DFL : constant := 0;
210 SIG_IGN : constant := 1;
211
212 function sigaction
213 (sig : Signal;
214 act : struct_sigaction_ptr;
215 oact : struct_sigaction_ptr) return int;
216 pragma Import (C, sigaction, "sigaction");
217
218 ----------
219 -- Time --
220 ----------
221
222 subtype time_t is System.Linux.time_t;
223 subtype timespec is System.Linux.timespec;
224 subtype timeval is System.Linux.timeval;
225 subtype clockid_t is System.Linux.clockid_t;
226
227 function clock_getres
228 (clock_id : clockid_t;
229 res : access timespec) return int;
230 pragma Import (C, clock_getres, "clock_getres");
231
232 function To_Duration (TS : timespec) return Duration;
233 pragma Inline (To_Duration);
234
235 function To_Timespec (D : Duration) return timespec;
236 pragma Inline (To_Timespec);
237
238 function sysconf (name : int) return long;
239 pragma Import (C, sysconf);
240
241 SC_CLK_TCK : constant := 2;
242 SC_NPROCESSORS_ONLN : constant := 84;
243
244 -------------------------
245 -- Priority Scheduling --
246 -------------------------
247
248 SCHED_OTHER : constant := 0;
249 SCHED_FIFO : constant := 1;
250 SCHED_RR : constant := 2;
251
252 function To_Target_Priority
253 (Prio : System.Any_Priority) return Interfaces.C.int;
254 -- Maps System.Any_Priority to a POSIX priority
255
256 -------------
257 -- Process --
258 -------------
259
260 type pid_t is private;
261
262 function kill (pid : pid_t; sig : Signal) return int;
263 pragma Import (C, kill, "kill");
264
265 function getpid return pid_t;
266 pragma Import (C, getpid, "getpid");
267
268 PR_SET_NAME : constant := 15;
269
270 function prctl
271 (option : int;
272 arg2, arg3, arg4, arg5 : unsigned_long := 0) return int;
273 pragma Import (C, prctl);
274
275 -------------
276 -- Threads --
277 -------------
278
279 type Thread_Body is access
280 function (arg : System.Address) return System.Address;
281 pragma Convention (C, Thread_Body);
282
283 function Thread_Body_Access is new
284 Ada.Unchecked_Conversion (System.Address, Thread_Body);
285
286 type pthread_t is new unsigned_long;
287 subtype Thread_Id is pthread_t;
288
289 function To_pthread_t is
290 new Ada.Unchecked_Conversion (unsigned_long, pthread_t);
291
292 type pthread_mutex_t is limited private;
293 type pthread_rwlock_t is limited private;
294 type pthread_cond_t is limited private;
295 type pthread_attr_t is limited private;
296 type pthread_mutexattr_t is limited private;
297 type pthread_rwlockattr_t is limited private;
298 type pthread_condattr_t is limited private;
299 type pthread_key_t is private;
300
301 PTHREAD_CREATE_DETACHED : constant := 1;
302
303 -----------
304 -- Stack --
305 -----------
306
307 type stack_t is record
308 ss_sp : System.Address;
309 ss_flags : int;
310 ss_size : size_t;
311 end record;
312 pragma Convention (C, stack_t);
313
314 function sigaltstack
315 (ss : not null access stack_t;
316 oss : access stack_t) return int;
317 pragma Import (C, sigaltstack, "sigaltstack");
318
319 Alternate_Stack : aliased System.Address;
320 pragma Import (C, Alternate_Stack, "__gnat_alternate_stack");
321 -- The alternate signal stack for stack overflows
322
323 Alternate_Stack_Size : constant := 16 * 1024;
324 -- This must be in keeping with init.c:__gnat_alternate_stack
325
326 function Get_Stack_Base (thread : pthread_t) return Address;
327 pragma Inline (Get_Stack_Base);
328 -- This is a dummy procedure to share some GNULLI files
329
330 ---------------------------------------
331 -- Nonstandard Thread Initialization --
332 ---------------------------------------
333
334 procedure pthread_init;
335 pragma Inline (pthread_init);
336 -- This is a dummy procedure to share some GNULLI files
337
338 -------------------------
339 -- POSIX.1c Section 3 --
340 -------------------------
341
342 function sigwait (set : access sigset_t; sig : access Signal) return int;
343 pragma Import (C, sigwait, "sigwait");
344
345 function pthread_kill (thread : pthread_t; sig : Signal) return int;
346 pragma Import (C, pthread_kill, "pthread_kill");
347
348 function pthread_sigmask
349 (how : int;
350 set : access sigset_t;
351 oset : access sigset_t) return int;
352 pragma Import (C, pthread_sigmask, "pthread_sigmask");
353
354 --------------------------
355 -- POSIX.1c Section 11 --
356 --------------------------
357
358 function pthread_mutexattr_init
359 (attr : access pthread_mutexattr_t) return int;
360 pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
361
362 function pthread_mutexattr_destroy
363 (attr : access pthread_mutexattr_t) return int;
364 pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
365
366 function pthread_mutex_init
367 (mutex : access pthread_mutex_t;
368 attr : access pthread_mutexattr_t) return int;
369 pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
370
371 function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
372 pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
373
374 function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
375 pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
376
377 function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
378 pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
379
380 function pthread_rwlockattr_init
381 (attr : access pthread_rwlockattr_t) return int;
382 pragma Import (C, pthread_rwlockattr_init, "pthread_rwlockattr_init");
383
384 function pthread_rwlockattr_destroy
385 (attr : access pthread_rwlockattr_t) return int;
386 pragma Import (C, pthread_rwlockattr_destroy, "pthread_rwlockattr_destroy");
387
388 PTHREAD_RWLOCK_PREFER_READER_NP : constant := 0;
389 PTHREAD_RWLOCK_PREFER_WRITER_NP : constant := 1;
390 PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP : constant := 2;
391
392 function pthread_rwlockattr_setkind_np
393 (attr : access pthread_rwlockattr_t;
394 pref : int) return int;
395 pragma Import
396 (C, pthread_rwlockattr_setkind_np, "pthread_rwlockattr_setkind_np");
397
398 function pthread_rwlock_init
399 (mutex : access pthread_rwlock_t;
400 attr : access pthread_rwlockattr_t) return int;
401 pragma Import (C, pthread_rwlock_init, "pthread_rwlock_init");
402
403 function pthread_rwlock_destroy
404 (mutex : access pthread_rwlock_t) return int;
405 pragma Import (C, pthread_rwlock_destroy, "pthread_rwlock_destroy");
406
407 function pthread_rwlock_rdlock (mutex : access pthread_rwlock_t) return int;
408 pragma Import (C, pthread_rwlock_rdlock, "pthread_rwlock_rdlock");
409
410 function pthread_rwlock_wrlock (mutex : access pthread_rwlock_t) return int;
411 pragma Import (C, pthread_rwlock_wrlock, "pthread_rwlock_wrlock");
412
413 function pthread_rwlock_unlock (mutex : access pthread_rwlock_t) return int;
414 pragma Import (C, pthread_rwlock_unlock, "pthread_rwlock_unlock");
415
416 function pthread_condattr_init
417 (attr : access pthread_condattr_t) return int;
418 pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
419
420 function pthread_condattr_destroy
421 (attr : access pthread_condattr_t) return int;
422 pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
423
424 function pthread_cond_init
425 (cond : access pthread_cond_t;
426 attr : access pthread_condattr_t) return int;
427 pragma Import (C, pthread_cond_init, "pthread_cond_init");
428
429 function pthread_cond_destroy (cond : access pthread_cond_t) return int;
430 pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
431
432 function pthread_cond_signal (cond : access pthread_cond_t) return int;
433 pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
434
435 function pthread_cond_wait
436 (cond : access pthread_cond_t;
437 mutex : access pthread_mutex_t) return int;
438 pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
439
440 function pthread_cond_timedwait
441 (cond : access pthread_cond_t;
442 mutex : access pthread_mutex_t;
443 abstime : access timespec) return int;
444 pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
445
446 --------------------------
447 -- POSIX.1c Section 13 --
448 --------------------------
449
450 type struct_sched_param is record
451 sched_priority : int; -- scheduling priority
452 end record;
453 pragma Convention (C, struct_sched_param);
454
455 function pthread_setschedparam
456 (thread : pthread_t;
457 policy : int;
458 param : access struct_sched_param) return int;
459 pragma Import (C, pthread_setschedparam, "pthread_setschedparam");
460
461 function pthread_attr_setschedpolicy
462 (attr : access pthread_attr_t;
463 policy : int) return int;
464 pragma Import
465 (C, pthread_attr_setschedpolicy, "pthread_attr_setschedpolicy");
466
467 function sched_yield return int;
468 pragma Import (C, sched_yield, "sched_yield");
469
470 ---------------------------
471 -- P1003.1c - Section 16 --
472 ---------------------------
473
474 function pthread_attr_init
475 (attributes : access pthread_attr_t) return int;
476 pragma Import (C, pthread_attr_init, "pthread_attr_init");
477
478 function pthread_attr_destroy
479 (attributes : access pthread_attr_t) return int;
480 pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
481
482 function pthread_attr_setdetachstate
483 (attr : access pthread_attr_t;
484 detachstate : int) return int;
485 pragma Import
486 (C, pthread_attr_setdetachstate, "pthread_attr_setdetachstate");
487
488 function pthread_attr_setstacksize
489 (attr : access pthread_attr_t;
490 stacksize : size_t) return int;
491 pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize");
492
493 function pthread_create
494 (thread : access pthread_t;
495 attributes : access pthread_attr_t;
496 start_routine : Thread_Body;
497 arg : System.Address) return int;
498 pragma Import (C, pthread_create, "pthread_create");
499
500 procedure pthread_exit (status : System.Address);
501 pragma Import (C, pthread_exit, "pthread_exit");
502
503 function pthread_self return pthread_t;
504 pragma Import (C, pthread_self, "pthread_self");
505
506 function lwp_self return System.Address;
507 pragma Import (C, lwp_self, "__gnat_lwp_self");
508
509 --------------------------
510 -- POSIX.1c Section 17 --
511 --------------------------
512
513 function pthread_setspecific
514 (key : pthread_key_t;
515 value : System.Address) return int;
516 pragma Import (C, pthread_setspecific, "pthread_setspecific");
517
518 function pthread_getspecific (key : pthread_key_t) return System.Address;
519 pragma Import (C, pthread_getspecific, "pthread_getspecific");
520
521 type destructor_pointer is access procedure (arg : System.Address);
522 pragma Convention (C, destructor_pointer);
523
524 function pthread_key_create
525 (key : access pthread_key_t;
526 destructor : destructor_pointer) return int;
527 pragma Import (C, pthread_key_create, "pthread_key_create");
528
529 ----------------
530 -- Extensions --
531 ----------------
532
533 CPU_SETSIZE : constant := 1_024;
534 -- Size of the cpu_set_t mask on most linux systems (SUSE 11 uses 4_096).
535 -- This is kept for backward compatibility (System.Task_Info uses it), but
536 -- the run-time library does no longer rely on static masks, using
537 -- dynamically allocated masks instead.
538
539 type bit_field is array (1 .. CPU_SETSIZE) of Boolean;
540 for bit_field'Size use CPU_SETSIZE;
541 pragma Pack (bit_field);
542 pragma Convention (C, bit_field);
543
544 type cpu_set_t is record
545 bits : bit_field;
546 end record;
547 pragma Convention (C, cpu_set_t);
548
549 type cpu_set_t_ptr is access all cpu_set_t;
550 -- In the run-time library we use this pointer because the size of type
551 -- cpu_set_t varies depending on the glibc version. Hence, objects of type
552 -- cpu_set_t are allocated dynamically using the number of processors
553 -- available in the target machine (value obtained at execution time).
554
555 function CPU_ALLOC (count : size_t) return cpu_set_t_ptr;
556 pragma Import (C, CPU_ALLOC, "__gnat_cpu_alloc");
557 -- Wrapper around the CPU_ALLOC C macro
558
559 function CPU_ALLOC_SIZE (count : size_t) return size_t;
560 pragma Import (C, CPU_ALLOC_SIZE, "__gnat_cpu_alloc_size");
561 -- Wrapper around the CPU_ALLOC_SIZE C macro
562
563 procedure CPU_FREE (cpuset : cpu_set_t_ptr);
564 pragma Import (C, CPU_FREE, "__gnat_cpu_free");
565 -- Wrapper around the CPU_FREE C macro
566
567 procedure CPU_ZERO (count : size_t; cpuset : cpu_set_t_ptr);
568 pragma Import (C, CPU_ZERO, "__gnat_cpu_zero");
569 -- Wrapper around the CPU_ZERO_S C macro
570
571 procedure CPU_SET (cpu : int; count : size_t; cpuset : cpu_set_t_ptr);
572 pragma Import (C, CPU_SET, "__gnat_cpu_set");
573 -- Wrapper around the CPU_SET_S C macro
574
575 function pthread_setaffinity_np
576 (thread : pthread_t;
577 cpusetsize : size_t;
578 cpuset : cpu_set_t_ptr) return int;
579 pragma Import (C, pthread_setaffinity_np, "pthread_setaffinity_np");
580 pragma Weak_External (pthread_setaffinity_np);
581 -- Use a weak symbol because this function may be available or not,
582 -- depending on the version of the system.
583
584 function pthread_attr_setaffinity_np
585 (attr : access pthread_attr_t;
586 cpusetsize : size_t;
587 cpuset : cpu_set_t_ptr) return int;
588 pragma Import (C, pthread_attr_setaffinity_np,
589 "pthread_attr_setaffinity_np");
590 pragma Weak_External (pthread_attr_setaffinity_np);
591 -- Use a weak symbol because this function may be available or not,
592 -- depending on the version of the system.
593
594 private
595
596 type sigset_t is
597 array (0 .. OS_Constants.SIZEOF_sigset - 1) of unsigned_char;
598 pragma Convention (C, sigset_t);
599 for sigset_t'Alignment use Interfaces.C.unsigned_long'Alignment;
600
601 pragma Warnings (Off);
602 for struct_sigaction use record
603 sa_handler at Linux.sa_handler_pos range 0 .. Standard'Address_Size - 1;
604 sa_mask at Linux.sa_mask_pos range 0 .. 1023;
605 sa_flags at Linux.sa_flags_pos
606 range 0 .. Interfaces.C.unsigned_long'Size - 1;
607 end record;
608 -- We intentionally leave sa_restorer unspecified and let the compiler
609 -- append it after the last field, so disable corresponding warning.
610 pragma Warnings (On);
611
612 type pid_t is new int;
613
614 subtype char_array is Interfaces.C.char_array;
615
616 type pthread_attr_t is record
617 Data : char_array (1 .. OS_Constants.PTHREAD_ATTR_SIZE);
618 end record;
619 pragma Convention (C, pthread_attr_t);
620 for pthread_attr_t'Alignment use Interfaces.C.unsigned_long'Alignment;
621
622 type pthread_condattr_t is record
623 Data : char_array (1 .. OS_Constants.PTHREAD_CONDATTR_SIZE);
624 end record;
625 pragma Convention (C, pthread_condattr_t);
626 for pthread_condattr_t'Alignment use Interfaces.C.int'Alignment;
627
628 type pthread_mutexattr_t is record
629 Data : char_array (1 .. OS_Constants.PTHREAD_MUTEXATTR_SIZE);
630 end record;
631 pragma Convention (C, pthread_mutexattr_t);
632 for pthread_mutexattr_t'Alignment use Interfaces.C.int'Alignment;
633
634 type pthread_mutex_t is record
635 Data : char_array (1 .. OS_Constants.PTHREAD_MUTEX_SIZE);
636 end record;
637 pragma Convention (C, pthread_mutex_t);
638 for pthread_mutex_t'Alignment use Interfaces.C.unsigned_long'Alignment;
639
640 type pthread_rwlockattr_t is record
641 Data : char_array (1 .. OS_Constants.PTHREAD_RWLOCKATTR_SIZE);
642 end record;
643 pragma Convention (C, pthread_rwlockattr_t);
644 for pthread_rwlockattr_t'Alignment use Interfaces.C.unsigned_long'Alignment;
645
646 type pthread_rwlock_t is record
647 Data : char_array (1 .. OS_Constants.PTHREAD_RWLOCK_SIZE);
648 end record;
649 pragma Convention (C, pthread_rwlock_t);
650 for pthread_rwlock_t'Alignment use Interfaces.C.unsigned_long'Alignment;
651
652 type pthread_cond_t is record
653 Data : char_array (1 .. OS_Constants.PTHREAD_COND_SIZE);
654 end record;
655 pragma Convention (C, pthread_cond_t);
656 for pthread_cond_t'Alignment use Interfaces.Unsigned_64'Alignment;
657
658 type pthread_key_t is new unsigned;
659
660 end System.OS_Interface;