1 ------------------------------------------------------------------------------
3 -- GNU ADA 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) 1998-2001, Free Software Foundation, Inc. --
11 -- GNARL is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 2, or (at your option) any later ver- --
14 -- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNARL; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
20 -- MA 02111-1307, USA. --
22 -- As a special exception, if other files instantiate generics from this --
23 -- unit, or you link this unit with other files to produce an executable, --
24 -- this unit does not by itself cause the resulting executable to be --
25 -- covered by the GNU General Public License. This exception does not --
26 -- however invalidate any other reasons why the executable file might be --
27 -- covered by the GNU Public License. --
29 -- GNARL was developed by the GNARL team at Florida State University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
34 -- This is the SGI Pthreads version of this package.
36 -- This package encapsulates all direct interfaces to OS services
37 -- that are needed by children of System.
39 -- PLEASE DO NOT add any with-clauses to this package
40 -- or remove the pragma Elaborate_Body.
41 -- It is designed to be a bottom-level (leaf) package.
44 package System.OS_Interface is
48 pragma Linker_Options ("-lpthread");
50 subtype int is Interfaces.C.int;
51 subtype short is Interfaces.C.short;
52 subtype long is Interfaces.C.long;
53 subtype unsigned is Interfaces.C.unsigned;
54 subtype unsigned_short is Interfaces.C.unsigned_short;
55 subtype unsigned_long is Interfaces.C.unsigned_long;
56 subtype unsigned_char is Interfaces.C.unsigned_char;
57 subtype plain_char is Interfaces.C.plain_char;
58 subtype size_t is Interfaces.C.size_t;
64 function errno return int;
65 pragma Import (C, errno, "__get_errno");
67 EINTR : constant := 4; -- interrupted system call
68 EAGAIN : constant := 11; -- No more processes
69 ENOMEM : constant := 12; -- Not enough core
70 EINVAL : constant := 22; -- Invalid argument
71 ETIMEDOUT : constant := 145; -- Connection timed out
77 Max_Interrupt : constant := 64;
78 type Signal is new int range 0 .. Max_Interrupt;
79 for Signal'Size use int'Size;
81 SIGHUP : constant := 1; -- hangup
82 SIGINT : constant := 2; -- interrupt (rubout)
83 SIGQUIT : constant := 3; -- quit (ASCD FS)
84 SIGILL : constant := 4; -- illegal instruction (not reset)
85 SIGTRAP : constant := 5; -- trace trap (not reset)
86 SIGIOT : constant := 6; -- IOT instruction
87 SIGABRT : constant := 6; -- used by abort, replace SIGIOT in the
89 SIGEMT : constant := 7; -- EMT instruction
90 SIGFPE : constant := 8; -- floating point exception
91 SIGKILL : constant := 9; -- kill (cannot be caught or ignored)
92 SIGBUS : constant := 10; -- bus error
93 SIGSEGV : constant := 11; -- segmentation violation
94 SIGSYS : constant := 12; -- bad argument to system call
95 SIGPIPE : constant := 13; -- write on a pipe with no one to read it
96 SIGALRM : constant := 14; -- alarm clock
97 SIGTERM : constant := 15; -- software termination signal from kill
98 SIGUSR1 : constant := 16; -- user defined signal 1
99 SIGUSR2 : constant := 17; -- user defined signal 2
100 SIGCLD : constant := 18; -- alias for SIGCHLD
101 SIGCHLD : constant := 18; -- child status change
102 SIGPWR : constant := 19; -- power-fail restart
103 SIGWINCH : constant := 20; -- window size change
104 SIGURG : constant := 21; -- urgent condition on IO channel
105 SIGPOLL : constant := 22; -- pollable event occurred
106 SIGIO : constant := 22; -- I/O possible (Solaris SIGPOLL alias)
107 SIGSTOP : constant := 23; -- stop (cannot be caught or ignored)
108 SIGTSTP : constant := 24; -- user stop requested from tty
109 SIGCONT : constant := 25; -- stopped process has been continued
110 SIGTTIN : constant := 26; -- background tty read attempted
111 SIGTTOU : constant := 27; -- background tty write attempted
112 SIGVTALRM : constant := 28; -- virtual timer expired
113 SIGPROF : constant := 29; -- profiling timer expired
114 SIGXCPU : constant := 30; -- CPU time limit exceeded
115 SIGXFSZ : constant := 31; -- filesize limit exceeded
116 SIGK32 : constant := 32; -- reserved for kernel (IRIX)
117 SIGCKPT : constant := 33; -- Checkpoint warning
118 SIGRESTART : constant := 34; -- Restart warning
119 SIGUME : constant := 35; -- Uncorrectable memory error
120 -- Signals defined for Posix 1003.1c.
121 SIGPTINTR : constant := 47;
122 SIGPTRESCHED : constant := 48;
123 -- Posix 1003.1b signals
124 SIGRTMIN : constant := 49; -- Posix 1003.1b signals
125 SIGRTMAX : constant := 64; -- Posix 1003.1b signals
127 type sigset_t is private;
128 type sigset_t_ptr is access all sigset_t;
130 function sigaddset (set : access sigset_t; sig : Signal) return int;
131 pragma Import (C, sigaddset, "sigaddset");
133 function sigdelset (set : access sigset_t; sig : Signal) return int;
134 pragma Import (C, sigdelset, "sigdelset");
136 function sigfillset (set : access sigset_t) return int;
137 pragma Import (C, sigfillset, "sigfillset");
139 function sigismember (set : access sigset_t; sig : Signal) return int;
140 pragma Import (C, sigismember, "sigismember");
142 function sigemptyset (set : access sigset_t) return int;
143 pragma Import (C, sigemptyset, "sigemptyset");
145 type array_type_2 is array (Integer range 0 .. 1) of int;
146 type struct_sigaction is record
148 sa_handler : System.Address;
150 sa_resv : array_type_2;
152 pragma Convention (C, struct_sigaction);
154 type struct_sigaction_ptr is access all struct_sigaction;
156 SIG_BLOCK : constant := 1;
157 SIG_UNBLOCK : constant := 2;
158 SIG_SETMASK : constant := 3;
160 SIG_DFL : constant := 0;
161 SIG_IGN : constant := 1;
165 act : struct_sigaction_ptr;
166 oact : struct_sigaction_ptr := null) return int;
167 pragma Import (C, sigaction, "sigaction");
173 type timespec is private;
174 type timespec_ptr is access all timespec;
176 type clockid_t is private;
178 CLOCK_REALTIME : constant clockid_t;
179 CLOCK_SGI_FAST : constant clockid_t;
180 CLOCK_SGI_CYCLE : constant clockid_t;
182 SGI_CYCLECNTR_SIZE : constant := 165;
184 function syssgi (request : Interfaces.C.int) return Interfaces.C.ptrdiff_t;
185 pragma Import (C, syssgi, "syssgi");
187 function clock_gettime
188 (clock_id : clockid_t;
189 tp : access timespec) return int;
190 pragma Import (C, clock_gettime, "clock_gettime");
192 function clock_getres
193 (clock_id : clockid_t;
194 tp : access timespec) return int;
195 pragma Import (C, clock_getres, "clock_getres");
197 function To_Duration (TS : timespec) return Duration;
198 pragma Inline (To_Duration);
200 function To_Timespec (D : Duration) return timespec;
201 pragma Inline (To_Timespec);
203 type struct_timeval is private;
205 function To_Duration (TV : struct_timeval) return Duration;
206 pragma Inline (To_Duration);
208 function To_Timeval (D : Duration) return struct_timeval;
209 pragma Inline (To_Timeval);
211 -------------------------
212 -- Priority Scheduling --
213 -------------------------
215 SCHED_FIFO : constant := 1;
216 SCHED_RR : constant := 2;
217 SCHED_TS : constant := 3;
218 SCHED_OTHER : constant := 3;
219 SCHED_NP : constant := 4;
221 function sched_get_priority_min (Policy : int) return int;
222 pragma Import (C, sched_get_priority_min, "sched_get_priority_min");
224 function sched_get_priority_max (Policy : int) return int;
225 pragma Import (C, sched_get_priority_max, "sched_get_priority_max");
231 type pid_t is private;
233 function kill (pid : pid_t; sig : Signal) return int;
234 pragma Import (C, kill, "kill");
236 function getpid return pid_t;
237 pragma Import (C, getpid, "getpid");
243 type Thread_Body is access
244 function (arg : System.Address) return System.Address;
245 type pthread_t is private;
246 subtype Thread_Id is pthread_t;
248 type pthread_mutex_t is limited private;
249 type pthread_cond_t is limited private;
250 type pthread_attr_t is limited private;
251 type pthread_mutexattr_t is limited private;
252 type pthread_condattr_t is limited private;
253 type pthread_key_t is private;
255 PTHREAD_CREATE_DETACHED : constant := 1;
257 ---------------------------------------
258 -- Nonstandard Thread Initialization --
259 ---------------------------------------
261 procedure pthread_init;
262 pragma Inline (pthread_init);
263 -- This is a dummy procedure to share some GNULLI files
265 -------------------------
266 -- POSIX.1c Section 3 --
267 -------------------------
270 (set : access sigset_t;
271 sig : access Signal) return int;
272 pragma Import (C, sigwait, "sigwait");
274 function pthread_kill
276 sig : Signal) return int;
277 pragma Import (C, pthread_kill, "pthread_kill");
279 function pthread_sigmask
282 oset : sigset_t_ptr) return int;
283 pragma Import (C, pthread_sigmask, "pthread_sigmask");
285 --------------------------
286 -- POSIX.1c Section 11 --
287 --------------------------
289 function pthread_mutexattr_init
290 (attr : access pthread_mutexattr_t) return int;
291 pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
293 function pthread_mutexattr_destroy
294 (attr : access pthread_mutexattr_t) return int;
295 pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
297 function pthread_mutex_init
298 (mutex : access pthread_mutex_t;
299 attr : access pthread_mutexattr_t) return int;
300 pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
302 function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
303 pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
305 function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
306 pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
308 function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
309 pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
311 function pthread_condattr_init
312 (attr : access pthread_condattr_t) return int;
313 pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
315 function pthread_condattr_destroy
316 (attr : access pthread_condattr_t) return int;
317 pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
319 function pthread_cond_init
320 (cond : access pthread_cond_t;
321 attr : access pthread_condattr_t) return int;
322 pragma Import (C, pthread_cond_init, "pthread_cond_init");
324 function pthread_cond_destroy (cond : access pthread_cond_t) return int;
325 pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
327 function pthread_cond_signal (cond : access pthread_cond_t) return int;
328 pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
330 function pthread_cond_wait
331 (cond : access pthread_cond_t;
332 mutex : access pthread_mutex_t) return int;
333 pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
335 function pthread_cond_timedwait
336 (cond : access pthread_cond_t;
337 mutex : access pthread_mutex_t;
338 abstime : access timespec) return int;
339 pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
341 --------------------------
342 -- POSIX.1c Section 13 --
343 --------------------------
345 PTHREAD_PRIO_NONE : constant := 0;
346 PTHREAD_PRIO_PROTECT : constant := 2;
347 PTHREAD_PRIO_INHERIT : constant := 1;
349 function pthread_mutexattr_setprotocol
350 (attr : access pthread_mutexattr_t;
351 protocol : int) return int;
352 pragma Import (C, pthread_mutexattr_setprotocol);
354 function pthread_mutexattr_setprioceiling
355 (attr : access pthread_mutexattr_t;
356 prioceiling : int) return int;
357 pragma Import (C, pthread_mutexattr_setprioceiling);
359 type struct_sched_param is record
360 sched_priority : int;
362 pragma Convention (C, struct_sched_param);
364 function pthread_setschedparam
367 param : access struct_sched_param)
369 pragma Import (C, pthread_setschedparam, "pthread_setschedparam");
371 function pthread_attr_setscope
372 (attr : access pthread_attr_t;
373 contentionscope : int) return int;
374 pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
376 function pthread_attr_setinheritsched
377 (attr : access pthread_attr_t;
378 inheritsched : int) return int;
380 (C, pthread_attr_setinheritsched, "pthread_attr_setinheritsched");
382 function pthread_attr_setschedpolicy
383 (attr : access pthread_attr_t;
384 policy : int) return int;
385 pragma Import (C, pthread_attr_setschedpolicy);
387 function pthread_attr_setschedparam
388 (attr : access pthread_attr_t;
389 sched_param : access struct_sched_param)
391 pragma Import (C, pthread_attr_setschedparam, "pthread_attr_setschedparam");
393 function sched_yield return int;
394 pragma Import (C, sched_yield, "sched_yield");
396 ---------------------------
397 -- P1003.1c - Section 16 --
398 ---------------------------
400 function pthread_attr_init (attributes : access pthread_attr_t) return int;
401 pragma Import (C, pthread_attr_init, "pthread_attr_init");
403 function pthread_attr_destroy
404 (attributes : access pthread_attr_t) return int;
405 pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
407 function pthread_attr_setdetachstate
408 (attr : access pthread_attr_t;
409 detachstate : int) return int;
410 pragma Import (C, pthread_attr_setdetachstate);
412 function pthread_attr_setstacksize
413 (attr : access pthread_attr_t;
414 stacksize : size_t) return int;
415 pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize");
417 function pthread_create
418 (thread : access pthread_t;
419 attributes : access pthread_attr_t;
420 start_routine : Thread_Body;
421 arg : System.Address) return int;
422 pragma Import (C, pthread_create, "pthread_create");
424 procedure pthread_exit (status : System.Address);
425 pragma Import (C, pthread_exit, "pthread_exit");
427 function pthread_self return pthread_t;
428 pragma Import (C, pthread_self, "pthread_self");
430 --------------------------
431 -- POSIX.1c Section 17 --
432 --------------------------
434 function pthread_setspecific
435 (key : pthread_key_t;
436 value : System.Address) return int;
437 pragma Import (C, pthread_setspecific, "pthread_setspecific");
439 function pthread_getspecific (key : pthread_key_t) return System.Address;
440 pragma Import (C, pthread_getspecific, "pthread_getspecific");
442 type destructor_pointer is access procedure (arg : System.Address);
444 function pthread_key_create
445 (key : access pthread_key_t;
446 destructor : destructor_pointer) return int;
447 pragma Import (C, pthread_key_create, "pthread_key_create");
449 ---------------------------------------------------------------
450 -- Non portable SGI 6.5 additions to the pthread interface --
451 -- must be executed from within the context of a system --
453 ---------------------------------------------------------------
455 function pthread_setrunon_np (cpu : int) return int;
456 pragma Import (C, pthread_setrunon_np, "pthread_setrunon_np");
460 type array_type_1 is array (Integer range 0 .. 3) of unsigned;
461 type sigset_t is record
462 X_X_sigbits : array_type_1;
464 pragma Convention (C, sigset_t);
466 type pid_t is new long;
468 type time_t is new long;
470 type timespec is record
474 pragma Convention (C, timespec);
476 type clockid_t is new int;
477 CLOCK_REALTIME : constant clockid_t := 1;
478 CLOCK_SGI_CYCLE : constant clockid_t := 2;
479 CLOCK_SGI_FAST : constant clockid_t := 3;
481 type struct_timeval is record
485 pragma Convention (C, struct_timeval);
487 type array_type_9 is array (Integer range 0 .. 4) of long;
488 type pthread_attr_t is record
489 X_X_D : array_type_9;
491 pragma Convention (C, pthread_attr_t);
493 type array_type_8 is array (Integer range 0 .. 1) of long;
494 type pthread_condattr_t is record
495 X_X_D : array_type_8;
497 pragma Convention (C, pthread_condattr_t);
499 type array_type_7 is array (Integer range 0 .. 1) of long;
500 type pthread_mutexattr_t is record
501 X_X_D : array_type_7;
503 pragma Convention (C, pthread_mutexattr_t);
505 type pthread_t is new unsigned;
507 type array_type_10 is array (Integer range 0 .. 7) of long;
508 type pthread_mutex_t is record
509 X_X_D : array_type_10;
511 pragma Convention (C, pthread_mutex_t);
513 type array_type_11 is array (Integer range 0 .. 7) of long;
514 type pthread_cond_t is record
515 X_X_D : array_type_11;
517 pragma Convention (C, pthread_cond_t);
519 type pthread_key_t is new int;
521 end System.OS_Interface;