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c5b2a8ae AC |
1 | ------------------------------------------------------------------------------ |
2 | -- -- | |
3 | -- GNU ADA RUNTIME 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 | -- -- | |
8a7988f5 AC |
9 | -- Copyright (C) 1991-1994, Florida State University -- |
10 | -- Copyright (C) 1995-2004, Free Software Foundation, Inc. -- | |
c5b2a8ae AC |
11 | -- -- |
12 | -- GNARL 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 2, or (at your option) any later ver- -- | |
15 | -- sion. GNARL 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. See the GNU General Public License -- | |
18 | -- for more details. You should have received a copy of the GNU General -- | |
19 | -- Public License distributed with GNARL; see file COPYING. If not, write -- | |
20 | -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- | |
21 | -- MA 02111-1307, USA. -- | |
22 | -- -- | |
23 | -- As a special exception, if other files instantiate generics from this -- | |
24 | -- unit, or you link this unit with other files to produce an executable, -- | |
25 | -- this unit does not by itself cause the resulting executable to be -- | |
26 | -- covered by the GNU General Public License. This exception does not -- | |
27 | -- however invalidate any other reasons why the executable file might be -- | |
28 | -- covered by the GNU Public License. -- | |
29 | -- -- | |
30 | -- GNARL was developed by the GNARL team at Florida State University. It is -- | |
31 | -- now maintained by Ada Core Technologies Inc. in cooperation with Florida -- | |
32 | -- State University (http://www.gnat.com). -- | |
33 | -- -- | |
34 | ------------------------------------------------------------------------------ | |
35 | ||
36 | -- This is the FreeBSD PTHREADS version of this package | |
37 | ||
8a7988f5 AC |
38 | -- This package encapsulates all direct interfaces to OS services |
39 | -- that are needed by children of System. | |
40 | ||
41 | -- PLEASE DO NOT add any with-clauses to this package or remove the pragma | |
42 | -- Preelaborate. This package is designed to be a bottom-level (leaf) package. | |
43 | ||
c5b2a8ae | 44 | with Interfaces.C; |
8a7988f5 AC |
45 | with Unchecked_Conversion; |
46 | ||
c5b2a8ae AC |
47 | package System.OS_Interface is |
48 | pragma Preelaborate; | |
49 | ||
50 | pragma Linker_Options ("-pthread"); | |
51 | ||
52 | subtype int is Interfaces.C.int; | |
53 | subtype short is Interfaces.C.short; | |
54 | subtype long is Interfaces.C.long; | |
55 | subtype unsigned is Interfaces.C.unsigned; | |
56 | subtype unsigned_short is Interfaces.C.unsigned_short; | |
57 | subtype unsigned_long is Interfaces.C.unsigned_long; | |
58 | subtype unsigned_char is Interfaces.C.unsigned_char; | |
59 | subtype plain_char is Interfaces.C.plain_char; | |
60 | subtype size_t is Interfaces.C.size_t; | |
61 | ||
62 | ----------- | |
63 | -- Errno -- | |
64 | ----------- | |
65 | ||
66 | function Errno return int; | |
67 | pragma Inline (Errno); | |
68 | ||
69 | EAGAIN : constant := 35; | |
70 | EINTR : constant := 4; | |
71 | EINVAL : constant := 22; | |
72 | ENOMEM : constant := 12; | |
73 | ETIMEDOUT : constant := 60; | |
74 | ||
75 | ------------- | |
76 | -- Signals -- | |
77 | ------------- | |
78 | ||
79 | Max_Interrupt : constant := 31; | |
80 | type Signal is new int range 0 .. Max_Interrupt; | |
81 | for Signal'Size use int'Size; | |
82 | ||
83 | SIGHUP : constant := 1; -- hangup | |
84 | SIGINT : constant := 2; -- interrupt (rubout) | |
85 | SIGQUIT : constant := 3; -- quit (ASCD FS) | |
86 | SIGILL : constant := 4; -- illegal instruction (not reset) | |
87 | SIGTRAP : constant := 5; -- trace trap (not reset) | |
88 | SIGIOT : constant := 6; -- IOT instruction | |
89 | SIGABRT : constant := 6; -- used by abort, replace SIGIOT in the future | |
90 | SIGEMT : constant := 7; -- EMT instruction | |
91 | SIGFPE : constant := 8; -- floating point exception | |
92 | SIGKILL : constant := 9; -- kill (cannot be caught or ignored) | |
93 | SIGBUS : constant := 10; -- bus error | |
94 | SIGSEGV : constant := 11; -- segmentation violation | |
95 | SIGSYS : constant := 12; -- bad argument to system call | |
96 | SIGPIPE : constant := 13; -- write on a pipe with no one to read it | |
97 | SIGALRM : constant := 14; -- alarm clock | |
98 | SIGTERM : constant := 15; -- software termination signal from kill | |
99 | SIGURG : constant := 16; -- urgent condition on IO channel | |
100 | SIGSTOP : constant := 17; -- stop (cannot be caught or ignored) | |
101 | SIGTSTP : constant := 18; -- user stop requested from tty | |
102 | SIGCONT : constant := 19; -- stopped process has been continued | |
103 | SIGCLD : constant := 20; -- alias for SIGCHLD | |
104 | SIGCHLD : constant := 20; -- child status change | |
105 | SIGTTIN : constant := 21; -- background tty read attempted | |
106 | SIGTTOU : constant := 22; -- background tty write attempted | |
107 | SIGIO : constant := 23; -- I/O possible (Solaris SIGPOLL alias) | |
108 | SIGXCPU : constant := 24; -- CPU time limit exceeded | |
109 | SIGXFSZ : constant := 25; -- filesize limit exceeded | |
110 | SIGVTALRM : constant := 26; -- virtual timer expired | |
111 | SIGPROF : constant := 27; -- profiling timer expired | |
112 | SIGWINCH : constant := 28; -- window size change | |
113 | SIGINFO : constant := 29; -- information request (NetBSD/FreeBSD) | |
114 | SIGUSR1 : constant := 30; -- user defined signal 1 | |
115 | SIGUSR2 : constant := 31; -- user defined signal 2 | |
116 | ||
117 | SIGADAABORT : constant := SIGABRT; | |
118 | -- Change this if you want to use another signal for task abort. | |
119 | -- SIGTERM might be a good one. | |
120 | ||
121 | type Signal_Set is array (Natural range <>) of Signal; | |
122 | ||
123 | -- Interrupts that must be unmasked at all times. FreeBSD | |
124 | -- pthreads will not allow an application to mask out any | |
125 | -- interrupt needed by the threads library. | |
126 | Unmasked : constant Signal_Set := | |
127 | (SIGTRAP, SIGBUS, SIGTTIN, SIGTTOU, SIGTSTP); | |
128 | ||
129 | -- FreeBSD will uses SIGPROF for timing. Do not allow a | |
130 | -- handler to attach to this signal. | |
131 | Reserved : constant Signal_Set := (0 .. 0 => SIGPROF); | |
132 | ||
133 | type sigset_t is private; | |
134 | ||
135 | function sigaddset | |
136 | (set : access sigset_t; | |
137 | sig : Signal) return int; | |
138 | pragma Import (C, sigaddset, "sigaddset"); | |
139 | ||
140 | function sigdelset | |
141 | (set : access sigset_t; | |
142 | sig : Signal) return int; | |
143 | pragma Import (C, sigdelset, "sigdelset"); | |
144 | ||
145 | function sigfillset (set : access sigset_t) return int; | |
146 | pragma Import (C, sigfillset, "sigfillset"); | |
147 | ||
148 | function sigismember | |
149 | (set : access sigset_t; | |
150 | sig : Signal) return int; | |
151 | pragma Import (C, sigismember, "sigismember"); | |
152 | ||
153 | function sigemptyset (set : access sigset_t) return int; | |
154 | pragma Import (C, sigemptyset, "sigemptyset"); | |
155 | ||
156 | -- sigcontext is architecture dependent, so define it private | |
157 | type struct_sigcontext is private; | |
158 | ||
159 | type old_struct_sigaction is record | |
160 | sa_handler : System.Address; | |
161 | sa_mask : sigset_t; | |
162 | sa_flags : int; | |
163 | end record; | |
164 | pragma Convention (C, old_struct_sigaction); | |
165 | ||
166 | type new_struct_sigaction is record | |
167 | sa_handler : System.Address; | |
168 | sa_flags : int; | |
169 | sa_mask : sigset_t; | |
170 | end record; | |
171 | pragma Convention (C, new_struct_sigaction); | |
172 | ||
173 | subtype struct_sigaction is new_struct_sigaction; | |
174 | type struct_sigaction_ptr is access all struct_sigaction; | |
175 | ||
176 | SIG_BLOCK : constant := 1; | |
177 | SIG_UNBLOCK : constant := 2; | |
178 | SIG_SETMASK : constant := 3; | |
179 | ||
180 | SIG_DFL : constant := 0; | |
181 | SIG_IGN : constant := 1; | |
182 | ||
5b4994bc AC |
183 | SA_SIGINFO : constant := 16#0040#; |
184 | ||
c5b2a8ae AC |
185 | function sigaction |
186 | (sig : Signal; | |
187 | act : struct_sigaction_ptr; | |
188 | oact : struct_sigaction_ptr) return int; | |
189 | pragma Import (C, sigaction, "sigaction"); | |
190 | ||
191 | ---------- | |
192 | -- Time -- | |
193 | ---------- | |
194 | ||
195 | Time_Slice_Supported : constant Boolean := True; | |
196 | -- Indicates wether time slicing is supported (i.e SCHED_RR is supported) | |
197 | ||
198 | type timespec is private; | |
199 | ||
200 | function nanosleep (rqtp, rmtp : access timespec) return int; | |
201 | pragma Import (C, nanosleep, "nanosleep"); | |
202 | ||
203 | type clockid_t is private; | |
204 | ||
205 | CLOCK_REALTIME : constant clockid_t; | |
206 | ||
207 | function clock_gettime | |
208 | (clock_id : clockid_t; | |
209 | tp : access timespec) | |
210 | return int; | |
211 | pragma Import (C, clock_gettime, "clock_gettime"); | |
212 | ||
213 | function To_Duration (TS : timespec) return Duration; | |
214 | pragma Inline (To_Duration); | |
215 | ||
216 | function To_Timespec (D : Duration) return timespec; | |
217 | pragma Inline (To_Timespec); | |
218 | ||
219 | type struct_timezone is record | |
220 | tz_minuteswest : int; | |
221 | tz_dsttime : int; | |
222 | end record; | |
223 | pragma Convention (C, struct_timezone); | |
224 | type struct_timeval is private; | |
225 | -- This is needed on systems that do not have clock_gettime() | |
226 | -- but do have gettimeofday(). | |
227 | ||
228 | function To_Duration (TV : struct_timeval) return Duration; | |
229 | pragma Inline (To_Duration); | |
230 | ||
231 | function To_Timeval (D : Duration) return struct_timeval; | |
232 | pragma Inline (To_Timeval); | |
233 | ||
234 | function gettimeofday | |
235 | (tv : access struct_timeval; | |
236 | tz : System.Address) return int; | |
237 | pragma Import (C, gettimeofday, "gettimeofday"); | |
238 | ||
239 | procedure usleep (useconds : unsigned_long); | |
240 | pragma Import (C, usleep, "usleep"); | |
241 | ||
242 | ------------------------- | |
243 | -- Priority Scheduling -- | |
244 | ------------------------- | |
245 | ||
246 | SCHED_FIFO : constant := 1; | |
247 | SCHED_OTHER : constant := 2; | |
248 | SCHED_RR : constant := 3; | |
249 | ||
250 | ------------- | |
251 | -- Process -- | |
252 | ------------- | |
253 | ||
254 | type pid_t is private; | |
255 | ||
256 | Self_PID : constant pid_t; | |
257 | ||
258 | function kill (pid : pid_t; sig : Signal) return int; | |
259 | pragma Import (C, kill, "kill"); | |
260 | ||
261 | function getpid return pid_t; | |
262 | pragma Import (C, getpid, "getpid"); | |
263 | ||
264 | --------- | |
265 | -- LWP -- | |
266 | --------- | |
267 | ||
268 | function lwp_self return System.Address; | |
269 | -- lwp_self does not exist on this thread library, revert to pthread_self | |
270 | -- which is the closest approximation (with getpid). This function is | |
271 | -- needed to share 7staprop.adb across POSIX-like targets. | |
272 | pragma Import (C, lwp_self, "pthread_self"); | |
273 | ||
274 | ------------- | |
275 | -- Threads -- | |
276 | ------------- | |
277 | ||
278 | type Thread_Body is access | |
279 | function (arg : System.Address) return System.Address; | |
280 | ||
8a7988f5 AC |
281 | function Thread_Body_Access is new |
282 | Unchecked_Conversion (System.Address, Thread_Body); | |
283 | ||
c5b2a8ae AC |
284 | type pthread_t is private; |
285 | subtype Thread_Id is pthread_t; | |
286 | ||
287 | type pthread_mutex_t is limited private; | |
288 | type pthread_cond_t is limited private; | |
289 | type pthread_attr_t is limited private; | |
290 | type pthread_mutexattr_t is limited private; | |
291 | type pthread_condattr_t is limited private; | |
292 | type pthread_key_t is private; | |
293 | ||
294 | PTHREAD_CREATE_DETACHED : constant := 1; | |
295 | PTHREAD_CREATE_JOINABLE : constant := 0; | |
296 | ||
297 | ----------- | |
298 | -- Stack -- | |
299 | ----------- | |
300 | ||
301 | Stack_Base_Available : constant Boolean := False; | |
302 | -- Indicates wether the stack base is available on this target. | |
303 | -- This allows us to share s-osinte.adb between all the FSU run time. | |
304 | -- Note that this value can only be true if pthread_t has a complete | |
305 | -- definition that corresponds exactly to the C header files. | |
306 | ||
307 | function Get_Stack_Base (thread : pthread_t) return Address; | |
308 | pragma Inline (Get_Stack_Base); | |
309 | -- returns the stack base of the specified thread. | |
310 | -- Only call this function when Stack_Base_Available is True. | |
311 | ||
312 | function Get_Page_Size return size_t; | |
313 | function Get_Page_Size return Address; | |
314 | pragma Import (C, Get_Page_Size, "getpagesize"); | |
315 | -- returns the size of a page, or 0 if this is not relevant on this | |
316 | -- target | |
317 | ||
318 | PROT_NONE : constant := 0; | |
319 | PROT_READ : constant := 1; | |
320 | PROT_WRITE : constant := 2; | |
321 | PROT_EXEC : constant := 4; | |
322 | PROT_ALL : constant := PROT_READ + PROT_WRITE + PROT_EXEC; | |
323 | ||
324 | PROT_ON : constant := PROT_NONE; | |
325 | PROT_OFF : constant := PROT_ALL; | |
326 | ||
327 | function mprotect | |
328 | (addr : Address; len : size_t; prot : int) return int; | |
329 | pragma Import (C, mprotect); | |
330 | ||
15ce9ca2 AC |
331 | --------------------------------------- |
332 | -- Nonstandard Thread Initialization -- | |
333 | --------------------------------------- | |
334 | ||
335 | -- FSU_THREADS requires pthread_init, which is nonstandard and | |
336 | -- this should be invoked during the elaboration of s-taprop.adb | |
337 | ||
338 | -- FreeBSD does not require this so we provide an empty Ada body | |
339 | ||
c5b2a8ae AC |
340 | procedure pthread_init; |
341 | ||
15ce9ca2 AC |
342 | ------------------------- |
343 | -- POSIX.1c Section 3 -- | |
344 | ------------------------- | |
c5b2a8ae AC |
345 | |
346 | function sigwait | |
347 | (set : access sigset_t; | |
348 | sig : access Signal) return int; | |
349 | pragma Import (C, sigwait, "sigwait"); | |
350 | ||
351 | function pthread_kill | |
352 | (thread : pthread_t; | |
15ce9ca2 | 353 | sig : Signal) return int; |
c5b2a8ae AC |
354 | pragma Import (C, pthread_kill, "pthread_kill"); |
355 | ||
356 | type sigset_t_ptr is access all sigset_t; | |
357 | ||
358 | function pthread_sigmask | |
359 | (how : int; | |
360 | set : sigset_t_ptr; | |
361 | oset : sigset_t_ptr) return int; | |
362 | pragma Import (C, pthread_sigmask, "pthread_sigmask"); | |
363 | ||
15ce9ca2 AC |
364 | -------------------------- |
365 | -- POSIX.1c Section 11 -- | |
366 | -------------------------- | |
c5b2a8ae AC |
367 | |
368 | function pthread_mutexattr_init | |
369 | (attr : access pthread_mutexattr_t) return int; | |
370 | pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init"); | |
371 | ||
372 | function pthread_mutexattr_destroy | |
373 | (attr : access pthread_mutexattr_t) return int; | |
374 | pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy"); | |
375 | ||
376 | function pthread_mutex_init | |
377 | (mutex : access pthread_mutex_t; | |
378 | attr : access pthread_mutexattr_t) return int; | |
379 | pragma Import (C, pthread_mutex_init, "pthread_mutex_init"); | |
380 | ||
381 | function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int; | |
382 | pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy"); | |
383 | ||
384 | function pthread_mutex_lock (mutex : access pthread_mutex_t) return int; | |
385 | pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock"); | |
386 | ||
387 | function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int; | |
388 | pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock"); | |
389 | ||
390 | function pthread_condattr_init | |
391 | (attr : access pthread_condattr_t) return int; | |
392 | pragma Import (C, pthread_condattr_init, "pthread_condattr_init"); | |
393 | ||
394 | function pthread_condattr_destroy | |
395 | (attr : access pthread_condattr_t) return int; | |
396 | pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy"); | |
397 | ||
398 | function pthread_cond_init | |
399 | (cond : access pthread_cond_t; | |
400 | attr : access pthread_condattr_t) return int; | |
401 | pragma Import (C, pthread_cond_init, "pthread_cond_init"); | |
402 | ||
403 | function pthread_cond_destroy (cond : access pthread_cond_t) return int; | |
404 | pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy"); | |
405 | ||
406 | function pthread_cond_signal (cond : access pthread_cond_t) return int; | |
407 | pragma Import (C, pthread_cond_signal, "pthread_cond_signal"); | |
408 | ||
409 | function pthread_cond_wait | |
410 | (cond : access pthread_cond_t; | |
411 | mutex : access pthread_mutex_t) return int; | |
412 | pragma Import (C, pthread_cond_wait, "pthread_cond_wait"); | |
413 | ||
414 | function pthread_cond_timedwait | |
415 | (cond : access pthread_cond_t; | |
416 | mutex : access pthread_mutex_t; | |
417 | abstime : access timespec) return int; | |
418 | pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait"); | |
419 | ||
420 | Relative_Timed_Wait : constant Boolean := False; | |
421 | -- pthread_cond_timedwait requires an absolute delay time | |
422 | ||
15ce9ca2 AC |
423 | -------------------------- |
424 | -- POSIX.1c Section 13 -- | |
425 | -------------------------- | |
c5b2a8ae AC |
426 | |
427 | PTHREAD_PRIO_NONE : constant := 0; | |
428 | PTHREAD_PRIO_PROTECT : constant := 2; | |
429 | PTHREAD_PRIO_INHERIT : constant := 1; | |
430 | ||
431 | function pthread_mutexattr_setprotocol | |
432 | (attr : access pthread_mutexattr_t; | |
433 | protocol : int) return int; | |
434 | pragma Import | |
435 | (C, pthread_mutexattr_setprotocol, "pthread_mutexattr_setprotocol"); | |
436 | ||
437 | function pthread_mutexattr_getprotocol | |
438 | (attr : access pthread_mutexattr_t; | |
439 | protocol : access int) return int; | |
440 | pragma Import | |
441 | (C, pthread_mutexattr_getprotocol, "pthread_mutexattr_getprotocol"); | |
442 | ||
443 | function pthread_mutexattr_setprioceiling | |
444 | (attr : access pthread_mutexattr_t; | |
445 | prioceiling : int) return int; | |
446 | pragma Import | |
447 | (C, pthread_mutexattr_setprioceiling, | |
448 | "pthread_mutexattr_setprioceiling"); | |
449 | ||
450 | function pthread_mutexattr_getprioceiling | |
451 | (attr : access pthread_mutexattr_t; | |
452 | prioceiling : access int) return int; | |
453 | pragma Import | |
454 | (C, pthread_mutexattr_getprioceiling, | |
455 | "pthread_mutexattr_getprioceiling"); | |
456 | ||
457 | type struct_sched_param is record | |
458 | sched_priority : int; | |
459 | end record; | |
460 | pragma Convention (C, struct_sched_param); | |
461 | ||
462 | function pthread_getschedparam | |
463 | (thread : pthread_t; | |
464 | policy : access int; | |
465 | param : access struct_sched_param) return int; | |
466 | pragma Import (C, pthread_getschedparam, "pthread_getschedparam"); | |
467 | ||
468 | function pthread_setschedparam | |
469 | (thread : pthread_t; | |
470 | policy : int; | |
471 | param : access struct_sched_param) return int; | |
472 | pragma Import (C, pthread_setschedparam, "pthread_setschedparam"); | |
473 | ||
474 | function pthread_attr_setscope | |
475 | (attr : access pthread_attr_t; | |
476 | contentionscope : int) return int; | |
477 | pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope"); | |
478 | ||
479 | function pthread_attr_getscope | |
480 | (attr : access pthread_attr_t; | |
481 | contentionscope : access int) return int; | |
482 | pragma Import (C, pthread_attr_getscope, "pthread_attr_getscope"); | |
483 | ||
484 | function pthread_attr_setinheritsched | |
485 | (attr : access pthread_attr_t; | |
486 | inheritsched : int) return int; | |
487 | pragma Import | |
488 | (C, pthread_attr_setinheritsched, "pthread_attr_setinheritsched"); | |
489 | ||
490 | function pthread_attr_getinheritsched | |
491 | (attr : access pthread_attr_t; | |
492 | inheritsched : access int) return int; | |
493 | pragma Import | |
494 | (C, pthread_attr_getinheritsched, "pthread_attr_getinheritsched"); | |
495 | ||
496 | function pthread_attr_setschedpolicy | |
497 | (attr : access pthread_attr_t; | |
498 | policy : int) return int; | |
499 | pragma Import (C, pthread_attr_setschedpolicy, | |
500 | "pthread_attr_setschedpolicy"); | |
501 | ||
502 | function pthread_attr_getschedpolicy | |
503 | (attr : access pthread_attr_t; | |
504 | policy : access int) return int; | |
505 | pragma Import (C, pthread_attr_getschedpolicy, | |
506 | "pthread_attr_getschedpolicy"); | |
507 | ||
508 | function pthread_attr_setschedparam | |
509 | (attr : access pthread_attr_t; | |
510 | sched_param : int) return int; | |
511 | pragma Import (C, pthread_attr_setschedparam, "pthread_attr_setschedparam"); | |
512 | ||
513 | function pthread_attr_getschedparam | |
514 | (attr : access pthread_attr_t; | |
515 | sched_param : access int) return int; | |
516 | pragma Import (C, pthread_attr_getschedparam, "pthread_attr_getschedparam"); | |
517 | ||
518 | function sched_yield return int; | |
519 | pragma Import (C, sched_yield, "pthread_yield"); | |
520 | ||
15ce9ca2 AC |
521 | -------------------------- |
522 | -- P1003.1c Section 16 -- | |
523 | -------------------------- | |
c5b2a8ae AC |
524 | |
525 | function pthread_attr_init (attributes : access pthread_attr_t) return int; | |
526 | pragma Import (C, pthread_attr_init, "pthread_attr_init"); | |
527 | ||
528 | function pthread_attr_destroy | |
529 | (attributes : access pthread_attr_t) return int; | |
530 | pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy"); | |
531 | ||
532 | function pthread_attr_setdetachstate | |
533 | (attr : access pthread_attr_t; | |
534 | detachstate : int) return int; | |
535 | pragma Import | |
536 | (C, pthread_attr_setdetachstate, "pthread_attr_setdetachstate"); | |
537 | ||
538 | function pthread_attr_getdetachstate | |
539 | (attr : access pthread_attr_t; | |
540 | detachstate : access int) return int; | |
541 | pragma Import | |
542 | (C, pthread_attr_getdetachstate, "pthread_attr_getdetachstate"); | |
543 | ||
544 | function pthread_attr_getstacksize | |
545 | (attr : access pthread_attr_t; | |
546 | stacksize : access size_t) return int; | |
547 | pragma Import | |
548 | (C, pthread_attr_getstacksize, "pthread_attr_getstacksize"); | |
549 | ||
550 | function pthread_attr_setstacksize | |
551 | (attr : access pthread_attr_t; | |
552 | stacksize : size_t) return int; | |
553 | pragma Import | |
554 | (C, pthread_attr_setstacksize, "pthread_attr_setstacksize"); | |
555 | ||
556 | function pthread_create | |
557 | (thread : access pthread_t; | |
558 | attributes : access pthread_attr_t; | |
559 | start_routine : Thread_Body; | |
560 | arg : System.Address) return int; | |
561 | pragma Import (C, pthread_create, "pthread_create"); | |
562 | ||
563 | function pthread_detach (thread : pthread_t) return int; | |
564 | pragma Import (C, pthread_detach, "pthread_detach"); | |
565 | ||
566 | procedure pthread_exit (status : System.Address); | |
567 | pragma Import (C, pthread_exit, "pthread_exit"); | |
568 | ||
569 | function pthread_self return pthread_t; | |
570 | pragma Import (C, pthread_self, "pthread_self"); | |
571 | ||
15ce9ca2 AC |
572 | -------------------------- |
573 | -- POSIX.1c Section 17 -- | |
574 | -------------------------- | |
c5b2a8ae AC |
575 | |
576 | function pthread_setspecific | |
577 | (key : pthread_key_t; | |
578 | value : System.Address) return int; | |
579 | pragma Import (C, pthread_setspecific, "pthread_setspecific"); | |
580 | ||
581 | function pthread_getspecific (key : pthread_key_t) return System.Address; | |
582 | pragma Import (C, pthread_getspecific, "pthread_getspecific"); | |
583 | ||
584 | type destructor_pointer is access | |
585 | procedure (arg : System.Address); | |
586 | ||
587 | function pthread_key_create | |
588 | (key : access pthread_key_t; | |
589 | destructor : destructor_pointer) return int; | |
590 | pragma Import (C, pthread_key_create, "pthread_key_create"); | |
591 | ||
15ce9ca2 AC |
592 | ------------------------------------ |
593 | -- Non-portable Pthread Functions -- | |
594 | ------------------------------------ | |
c5b2a8ae AC |
595 | |
596 | function pthread_set_name_np | |
597 | (thread : pthread_t; | |
598 | name : System.Address) return int; | |
599 | pragma Import (C, pthread_set_name_np, "pthread_set_name_np"); | |
600 | ||
601 | private | |
602 | ||
603 | type sigset_t is array (1 .. 4) of unsigned; | |
604 | ||
605 | -- In FreeBSD the component sa_handler turns out to | |
606 | -- be one a union type, and the selector is a macro: | |
607 | -- #define sa_handler __sigaction_u._handler | |
608 | -- #define sa_sigaction __sigaction_u._sigaction | |
609 | ||
15ce9ca2 AC |
610 | -- Should we add a signal_context type here ??? |
611 | -- How could it be done independent of the CPU architecture ??? | |
c5b2a8ae AC |
612 | -- sigcontext type is opaque, so it is architecturally neutral. |
613 | -- It is always passed as an access type, so define it as an empty record | |
614 | -- since the contents are not used anywhere. | |
15ce9ca2 | 615 | |
c5b2a8ae AC |
616 | type struct_sigcontext is null record; |
617 | pragma Convention (C, struct_sigcontext); | |
618 | ||
619 | type pid_t is new int; | |
620 | Self_PID : constant pid_t := 0; | |
621 | ||
622 | type time_t is new long; | |
623 | ||
624 | type timespec is record | |
625 | ts_sec : time_t; | |
626 | ts_nsec : long; | |
627 | end record; | |
628 | pragma Convention (C, timespec); | |
629 | ||
630 | type clockid_t is new int; | |
631 | CLOCK_REALTIME : constant clockid_t := 0; | |
632 | ||
633 | type struct_timeval is record | |
634 | tv_sec : long; | |
635 | tv_usec : long; | |
636 | end record; | |
637 | pragma Convention (C, struct_timeval); | |
638 | ||
639 | type pthread_t is new System.Address; | |
640 | type pthread_attr_t is new System.Address; | |
641 | type pthread_mutex_t is new System.Address; | |
642 | type pthread_mutexattr_t is new System.Address; | |
643 | type pthread_cond_t is new System.Address; | |
644 | type pthread_condattr_t is new System.Address; | |
645 | type pthread_key_t is new int; | |
646 | ||
647 | end System.OS_Interface; |