1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
5 -- S Y S T E M . O S _ I N T E R F A C E --
9 -- Copyright (C) 1991-1994, Florida State University --
10 -- Copyright (C) 1995-2008, Free Software Foundation, Inc. --
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, 51 Franklin Street, Fifth Floor, --
21 -- Boston, MA 02110-1301, USA. --
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. --
30 -- GNARL was developed by the GNARL team at Florida State University. --
31 -- Extensive contributions were provided by Ada Core Technologies, Inc. --
33 ------------------------------------------------------------------------------
35 -- This is the SGI Pthreads version of this package
37 -- This package encapsulates all direct interfaces to OS services that are
38 -- needed by the tasking run-time (libgnarl).
40 -- PLEASE DO NOT add any with-clauses to this package or remove the pragma
41 -- Preelaborate. This package is designed to be a bottom-level (leaf) package.
43 with Ada.Unchecked_Conversion;
47 package System.OS_Interface is
51 pragma Linker_Options ("-lpthread");
53 subtype int is Interfaces.C.int;
54 subtype short is Interfaces.C.short;
55 subtype long is Interfaces.C.long;
56 subtype unsigned is Interfaces.C.unsigned;
57 subtype unsigned_short is Interfaces.C.unsigned_short;
58 subtype unsigned_long is Interfaces.C.unsigned_long;
59 subtype unsigned_char is Interfaces.C.unsigned_char;
60 subtype plain_char is Interfaces.C.plain_char;
61 subtype size_t is Interfaces.C.size_t;
67 function errno return int;
68 pragma Import (C, errno, "__get_errno");
70 EINTR : constant := 4; -- interrupted system call
71 EAGAIN : constant := 11; -- No more processes
72 ENOMEM : constant := 12; -- Not enough core
73 EINVAL : constant := 22; -- Invalid argument
74 ETIMEDOUT : constant := 145; -- Connection timed out
80 Max_Interrupt : constant := 64;
81 type Signal is new int range 0 .. Max_Interrupt;
82 for Signal'Size use int'Size;
84 SIGHUP : constant := 1; -- hangup
85 SIGINT : constant := 2; -- interrupt (rubout)
86 SIGQUIT : constant := 3; -- quit (ASCD FS)
87 SIGILL : constant := 4; -- illegal instruction (not reset)
88 SIGTRAP : constant := 5; -- trace trap (not reset)
89 SIGIOT : constant := 6; -- IOT instruction
90 SIGABRT : constant := 6; -- used by abort, replace SIGIOT in the future
91 SIGEMT : constant := 7; -- EMT instruction
92 SIGFPE : constant := 8; -- floating point exception
93 SIGKILL : constant := 9; -- kill (cannot be caught or ignored)
94 SIGBUS : constant := 10; -- bus error
95 SIGSEGV : constant := 11; -- segmentation violation
96 SIGSYS : constant := 12; -- bad argument to system call
97 SIGPIPE : constant := 13; -- write on a pipe with no one to read it
98 SIGALRM : constant := 14; -- alarm clock
99 SIGTERM : constant := 15; -- software termination signal from kill
100 SIGUSR1 : constant := 16; -- user defined signal 1
101 SIGUSR2 : constant := 17; -- user defined signal 2
102 SIGCLD : constant := 18; -- alias for SIGCHLD
103 SIGCHLD : constant := 18; -- child status change
104 SIGPWR : constant := 19; -- power-fail restart
105 SIGWINCH : constant := 20; -- window size change
106 SIGURG : constant := 21; -- urgent condition on IO channel
107 SIGPOLL : constant := 22; -- pollable event occurred
108 SIGIO : constant := 22; -- I/O possible (Solaris SIGPOLL alias)
109 SIGSTOP : constant := 23; -- stop (cannot be caught or ignored)
110 SIGTSTP : constant := 24; -- user stop requested from tty
111 SIGCONT : constant := 25; -- stopped process has been continued
112 SIGTTIN : constant := 26; -- background tty read attempted
113 SIGTTOU : constant := 27; -- background tty write attempted
114 SIGVTALRM : constant := 28; -- virtual timer expired
115 SIGPROF : constant := 29; -- profiling timer expired
116 SIGXCPU : constant := 30; -- CPU time limit exceeded
117 SIGXFSZ : constant := 31; -- filesize limit exceeded
118 SIGK32 : constant := 32; -- reserved for kernel (IRIX)
119 SIGCKPT : constant := 33; -- Checkpoint warning
120 SIGRESTART : constant := 34; -- Restart warning
121 SIGUME : constant := 35; -- Uncorrectable memory error
122 -- Signals defined for Posix 1003.1c
123 SIGPTINTR : constant := 47;
124 SIGPTRESCHED : constant := 48;
125 -- Posix 1003.1b signals
126 SIGRTMIN : constant := 49; -- Posix 1003.1b signals
127 SIGRTMAX : constant := 64; -- Posix 1003.1b signals
129 type sigset_t is private;
131 function sigaddset (set : access sigset_t; sig : Signal) return int;
132 pragma Import (C, sigaddset, "sigaddset");
134 function sigdelset (set : access sigset_t; sig : Signal) return int;
135 pragma Import (C, sigdelset, "sigdelset");
137 function sigfillset (set : access sigset_t) return int;
138 pragma Import (C, sigfillset, "sigfillset");
140 function sigismember (set : access sigset_t; sig : Signal) return int;
141 pragma Import (C, sigismember, "sigismember");
143 function sigemptyset (set : access sigset_t) return int;
144 pragma Import (C, sigemptyset, "sigemptyset");
146 type array_type_2 is array (Integer range 0 .. 1) of int;
147 type struct_sigaction is record
149 sa_handler : System.Address;
151 sa_resv : array_type_2;
153 pragma Convention (C, struct_sigaction);
155 type struct_sigaction_ptr is access all struct_sigaction;
157 SIG_BLOCK : constant := 1;
158 SIG_UNBLOCK : constant := 2;
159 SIG_SETMASK : constant := 3;
161 SIG_DFL : constant := 0;
162 SIG_IGN : constant := 1;
166 act : struct_sigaction_ptr;
167 oact : struct_sigaction_ptr := null) return int;
168 pragma Import (C, sigaction, "sigaction");
174 type timespec is private;
175 type timespec_ptr is access all timespec;
177 type clockid_t is private;
179 CLOCK_REALTIME : constant clockid_t;
180 CLOCK_SGI_FAST : constant clockid_t;
181 CLOCK_SGI_CYCLE : constant clockid_t;
183 SGI_CYCLECNTR_SIZE : constant := 165;
185 function syssgi (request : Interfaces.C.int) return Interfaces.C.ptrdiff_t;
186 pragma Import (C, syssgi, "syssgi");
188 function clock_gettime
189 (clock_id : clockid_t;
190 tp : access timespec) return int;
191 pragma Import (C, clock_gettime, "clock_gettime");
193 function clock_getres
194 (clock_id : clockid_t;
195 tp : access timespec) return int;
196 pragma Import (C, clock_getres, "clock_getres");
198 function To_Duration (TS : timespec) return Duration;
199 pragma Inline (To_Duration);
201 function To_Timespec (D : Duration) return timespec;
202 pragma Inline (To_Timespec);
204 type struct_timeval is private;
206 function To_Duration (TV : struct_timeval) return Duration;
207 pragma Inline (To_Duration);
209 function To_Timeval (D : Duration) return struct_timeval;
210 pragma Inline (To_Timeval);
212 -------------------------
213 -- Priority Scheduling --
214 -------------------------
216 SCHED_FIFO : constant := 1;
217 SCHED_RR : constant := 2;
218 SCHED_TS : constant := 3;
219 SCHED_OTHER : constant := 3;
220 SCHED_NP : constant := 4;
222 function sched_get_priority_min (Policy : int) return int;
223 pragma Import (C, sched_get_priority_min, "sched_get_priority_min");
225 function sched_get_priority_max (Policy : int) return int;
226 pragma Import (C, sched_get_priority_max, "sched_get_priority_max");
232 type pid_t is private;
234 function kill (pid : pid_t; sig : Signal) return int;
235 pragma Import (C, kill, "kill");
237 function getpid return pid_t;
238 pragma Import (C, getpid, "getpid");
244 type Thread_Body is access
245 function (arg : System.Address) return System.Address;
246 pragma Convention (C, Thread_Body);
248 function Thread_Body_Access is new
249 Ada.Unchecked_Conversion (System.Address, Thread_Body);
251 type pthread_t is private;
252 subtype Thread_Id is pthread_t;
254 type pthread_mutex_t is limited private;
255 type pthread_cond_t is limited private;
256 type pthread_attr_t is limited private;
257 type pthread_mutexattr_t is limited private;
258 type pthread_condattr_t is limited private;
259 type pthread_key_t is private;
261 PTHREAD_CREATE_DETACHED : constant := 1;
267 Alternate_Stack_Size : constant := 0;
268 -- No alternate signal stack is used on this platform
270 ---------------------------------------
271 -- Nonstandard Thread Initialization --
272 ---------------------------------------
274 procedure pthread_init;
275 pragma Inline (pthread_init);
276 -- This is a dummy procedure to share some GNULLI files
278 -------------------------
279 -- POSIX.1c Section 3 --
280 -------------------------
283 (set : access sigset_t;
284 sig : access Signal) return int;
285 pragma Import (C, sigwait, "sigwait");
287 function pthread_kill
289 sig : Signal) return int;
290 pragma Import (C, pthread_kill, "pthread_kill");
292 function pthread_sigmask
294 set : access sigset_t;
295 oset : access sigset_t) return int;
296 pragma Import (C, pthread_sigmask, "pthread_sigmask");
298 --------------------------
299 -- POSIX.1c Section 11 --
300 --------------------------
302 function pthread_mutexattr_init
303 (attr : access pthread_mutexattr_t) return int;
304 pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
306 function pthread_mutexattr_destroy
307 (attr : access pthread_mutexattr_t) return int;
308 pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
310 function pthread_mutex_init
311 (mutex : access pthread_mutex_t;
312 attr : access pthread_mutexattr_t) return int;
313 pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
315 function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
316 pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
318 function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
319 pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
321 function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
322 pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
324 function pthread_condattr_init
325 (attr : access pthread_condattr_t) return int;
326 pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
328 function pthread_condattr_destroy
329 (attr : access pthread_condattr_t) return int;
330 pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
332 function pthread_cond_init
333 (cond : access pthread_cond_t;
334 attr : access pthread_condattr_t) return int;
335 pragma Import (C, pthread_cond_init, "pthread_cond_init");
337 function pthread_cond_destroy (cond : access pthread_cond_t) return int;
338 pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
340 function pthread_cond_signal (cond : access pthread_cond_t) return int;
341 pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
343 function pthread_cond_wait
344 (cond : access pthread_cond_t;
345 mutex : access pthread_mutex_t) return int;
346 pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
348 function pthread_cond_timedwait
349 (cond : access pthread_cond_t;
350 mutex : access pthread_mutex_t;
351 abstime : access timespec) return int;
352 pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
354 --------------------------
355 -- POSIX.1c Section 13 --
356 --------------------------
358 PTHREAD_PRIO_NONE : constant := 0;
359 PTHREAD_PRIO_PROTECT : constant := 2;
360 PTHREAD_PRIO_INHERIT : constant := 1;
362 function pthread_mutexattr_setprotocol
363 (attr : access pthread_mutexattr_t;
364 protocol : int) return int;
365 pragma Import (C, pthread_mutexattr_setprotocol);
367 function pthread_mutexattr_setprioceiling
368 (attr : access pthread_mutexattr_t;
369 prioceiling : int) return int;
370 pragma Import (C, pthread_mutexattr_setprioceiling);
372 type struct_sched_param is record
373 sched_priority : int;
375 pragma Convention (C, struct_sched_param);
377 function pthread_setschedparam
380 param : access struct_sched_param)
382 pragma Import (C, pthread_setschedparam, "pthread_setschedparam");
384 function pthread_attr_setscope
385 (attr : access pthread_attr_t;
386 contentionscope : int) return int;
387 pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
389 function pthread_attr_setinheritsched
390 (attr : access pthread_attr_t;
391 inheritsched : int) return int;
393 (C, pthread_attr_setinheritsched, "pthread_attr_setinheritsched");
395 function pthread_attr_setschedpolicy
396 (attr : access pthread_attr_t;
397 policy : int) return int;
398 pragma Import (C, pthread_attr_setschedpolicy);
400 function pthread_attr_setschedparam
401 (attr : access pthread_attr_t;
402 sched_param : access struct_sched_param)
404 pragma Import (C, pthread_attr_setschedparam, "pthread_attr_setschedparam");
406 function sched_yield return int;
407 pragma Import (C, sched_yield, "sched_yield");
409 ---------------------------
410 -- P1003.1c - Section 16 --
411 ---------------------------
413 function pthread_attr_init (attributes : access pthread_attr_t) return int;
414 pragma Import (C, pthread_attr_init, "pthread_attr_init");
416 function pthread_attr_destroy
417 (attributes : access pthread_attr_t) return int;
418 pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
420 function pthread_attr_setdetachstate
421 (attr : access pthread_attr_t;
422 detachstate : int) return int;
423 pragma Import (C, pthread_attr_setdetachstate);
425 function pthread_attr_setstacksize
426 (attr : access pthread_attr_t;
427 stacksize : size_t) return int;
428 pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize");
430 function pthread_create
431 (thread : access pthread_t;
432 attributes : access pthread_attr_t;
433 start_routine : Thread_Body;
434 arg : System.Address) return int;
435 pragma Import (C, pthread_create, "pthread_create");
437 procedure pthread_exit (status : System.Address);
438 pragma Import (C, pthread_exit, "pthread_exit");
440 function pthread_self return pthread_t;
441 pragma Import (C, pthread_self, "pthread_self");
443 --------------------------
444 -- POSIX.1c Section 17 --
445 --------------------------
447 function pthread_setspecific
448 (key : pthread_key_t;
449 value : System.Address) return int;
450 pragma Import (C, pthread_setspecific, "pthread_setspecific");
452 function pthread_getspecific (key : pthread_key_t) return System.Address;
453 pragma Import (C, pthread_getspecific, "pthread_getspecific");
455 type destructor_pointer is access procedure (arg : System.Address);
456 pragma Convention (C, destructor_pointer);
458 function pthread_key_create
459 (key : access pthread_key_t;
460 destructor : destructor_pointer) return int;
461 pragma Import (C, pthread_key_create, "pthread_key_create");
467 -- Non portable SGI 6.5 additions to the pthread interface must be
468 -- executed from within the context of a system scope task.
470 function pthread_setrunon_np (cpu : int) return int;
471 pragma Import (C, pthread_setrunon_np, "pthread_setrunon_np");
475 type array_type_1 is array (Integer range 0 .. 3) of unsigned;
476 type sigset_t is record
477 X_X_sigbits : array_type_1;
479 pragma Convention (C, sigset_t);
481 type pid_t is new long;
483 type time_t is new long;
485 type timespec is record
489 pragma Convention (C, timespec);
491 type clockid_t is new int;
492 CLOCK_REALTIME : constant clockid_t := 1;
493 CLOCK_SGI_CYCLE : constant clockid_t := 2;
494 CLOCK_SGI_FAST : constant clockid_t := 3;
496 type struct_timeval is record
500 pragma Convention (C, struct_timeval);
502 type array_type_9 is array (Integer range 0 .. 4) of long;
503 type pthread_attr_t is record
504 X_X_D : array_type_9;
506 pragma Convention (C, pthread_attr_t);
508 type array_type_8 is array (Integer range 0 .. 1) of long;
509 type pthread_condattr_t is record
510 X_X_D : array_type_8;
512 pragma Convention (C, pthread_condattr_t);
514 type array_type_7 is array (Integer range 0 .. 1) of long;
515 type pthread_mutexattr_t is record
516 X_X_D : array_type_7;
518 pragma Convention (C, pthread_mutexattr_t);
520 type pthread_t is new unsigned;
522 type array_type_10 is array (Integer range 0 .. 7) of long;
523 type pthread_mutex_t is record
524 X_X_D : array_type_10;
526 pragma Convention (C, pthread_mutex_t);
528 type array_type_11 is array (Integer range 0 .. 7) of long;
529 type pthread_cond_t is record
530 X_X_D : array_type_11;
532 pragma Convention (C, pthread_cond_t);
534 type pthread_key_t is new int;
536 end System.OS_Interface;