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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) 1995-2006, Free Software Foundation, Inc. --
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, 51 Franklin Street, Fifth Floor, --
21 -- Boston, MA 02110-1301, 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. --
31 -- Extensive contributions were provided by Ada Core Technologies, Inc. --
32 -- --
33 ------------------------------------------------------------------------------
35 -- This is the HP-UX version of this package
37 -- This package encapsulates all direct interfaces to OS services
38 -- that are needed by children of System.
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 Interfaces.C;
44 with Unchecked_Conversion;
46 package System.OS_Interface is
47 pragma Preelaborate;
49 pragma Linker_Options ("-lcma");
51 subtype int is Interfaces.C.int;
52 subtype short is Interfaces.C.short;
53 subtype long is Interfaces.C.long;
54 subtype unsigned is Interfaces.C.unsigned;
55 subtype unsigned_short is Interfaces.C.unsigned_short;
56 subtype unsigned_long is Interfaces.C.unsigned_long;
57 subtype unsigned_char is Interfaces.C.unsigned_char;
58 subtype plain_char is Interfaces.C.plain_char;
59 subtype size_t is Interfaces.C.size_t;
61 -----------
62 -- Errno --
63 -----------
65 function errno return int;
66 pragma Import (C, errno, "__get_errno");
68 EAGAIN : constant := 11;
69 EINTR : constant := 4;
70 EINVAL : constant := 22;
71 ENOMEM : constant := 12;
72 ETIME : constant := 52;
73 ETIMEDOUT : constant := 238;
75 FUNC_ERR : constant := -1;
77 -------------
78 -- Signals --
79 -------------
81 Max_Interrupt : constant := 44;
82 type Signal is new int range 0 .. Max_Interrupt;
83 for Signal'Size use int'Size;
85 SIGHUP : constant := 1; -- hangup
86 SIGINT : constant := 2; -- interrupt (rubout)
87 SIGQUIT : constant := 3; -- quit (ASCD FS)
88 SIGILL : constant := 4; -- illegal instruction (not reset)
89 SIGTRAP : constant := 5; -- trace trap (not reset)
90 SIGIOT : constant := 6; -- IOT instruction
91 SIGABRT : constant := 6; -- used by abort, replace SIGIOT in the future
92 SIGEMT : constant := 7; -- EMT instruction
93 SIGFPE : constant := 8; -- floating point exception
94 SIGKILL : constant := 9; -- kill (cannot be caught or ignored)
95 SIGBUS : constant := 10; -- bus error
96 SIGSEGV : constant := 11; -- segmentation violation
97 SIGSYS : constant := 12; -- bad argument to system call
98 SIGPIPE : constant := 13; -- write on a pipe with no one to read it
99 SIGALRM : constant := 14; -- alarm clock
100 SIGTERM : constant := 15; -- software termination signal from kill
101 SIGUSR1 : constant := 16; -- user defined signal 1
102 SIGUSR2 : constant := 17; -- user defined signal 2
103 SIGCLD : constant := 18; -- alias for SIGCHLD
104 SIGCHLD : constant := 18; -- child status change
105 SIGPWR : constant := 19; -- power-fail restart
106 SIGVTALRM : constant := 20; -- virtual timer alarm
107 SIGPROF : constant := 21; -- profiling timer alarm
108 SIGIO : constant := 22; -- asynchronous I/O
109 SIGPOLL : constant := 22; -- pollable event occurred
110 SIGWINCH : constant := 23; -- window size change
111 SIGSTOP : constant := 24; -- stop (cannot be caught or ignored)
112 SIGTSTP : constant := 25; -- user stop requested from tty
113 SIGCONT : constant := 26; -- stopped process has been continued
114 SIGTTIN : constant := 27; -- background tty read attempted
115 SIGTTOU : constant := 28; -- background tty write attempted
116 SIGURG : constant := 29; -- urgent condition on IO channel
117 SIGLOST : constant := 30; -- remote lock lost (NFS)
118 SIGDIL : constant := 32; -- DIL signal
119 SIGXCPU : constant := 33; -- CPU time limit exceeded (setrlimit)
120 SIGXFSZ : constant := 34; -- file size limit exceeded (setrlimit)
122 SIGADAABORT : constant := SIGABRT;
123 -- Note: on other targets, we usually use SIGABRT, but on HP/UX, it
124 -- appears that SIGABRT can't be used in sigwait(), so we use SIGTERM.
126 type Signal_Set is array (Natural range <>) of Signal;
128 Unmasked : constant Signal_Set :=
129 (SIGBUS, SIGTRAP, SIGTTIN, SIGTTOU, SIGTSTP);
131 Reserved : constant Signal_Set := (SIGKILL, SIGSTOP);
133 type sigset_t is private;
135 type isr_address is access procedure (sig : int);
137 function intr_attach (sig : int; handler : isr_address) return long;
139 Intr_Attach_Reset : constant Boolean := True;
140 -- True if intr_attach is reset after an interrupt handler is called
142 function sigaddset (set : access sigset_t; sig : Signal) return int;
143 pragma Import (C, sigaddset, "sigaddset");
145 function sigdelset (set : access sigset_t; sig : Signal) return int;
146 pragma Import (C, sigdelset, "sigdelset");
148 function sigfillset (set : access sigset_t) return int;
149 pragma Import (C, sigfillset, "sigfillset");
151 function sigismember (set : access sigset_t; sig : Signal) return int;
152 pragma Import (C, sigismember, "sigismember");
154 function sigemptyset (set : access sigset_t) return int;
155 pragma Import (C, sigemptyset, "sigemptyset");
157 type Signal_Handler is access procedure (signo : Signal);
159 type 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, struct_sigaction);
165 type struct_sigaction_ptr is access all struct_sigaction;
167 SA_RESTART : constant := 16#40#;
168 SA_SIGINFO : constant := 16#10#;
170 SIG_BLOCK : constant := 0;
171 SIG_UNBLOCK : constant := 1;
172 SIG_SETMASK : constant := 2;
174 SIG_DFL : constant := 0;
175 SIG_IGN : constant := 1;
176 SIG_ERR : constant := -1;
178 function sigaction
179 (sig : Signal;
180 act : struct_sigaction_ptr;
181 oact : struct_sigaction_ptr) return int;
182 pragma Import (C, sigaction, "sigaction");
184 ----------
185 -- Time --
186 ----------
188 type timespec is private;
190 function nanosleep (rqtp, rmtp : access timespec) return int;
191 pragma Import (C, nanosleep);
193 type clockid_t is private;
195 CLOCK_REALTIME : constant clockid_t;
197 function Clock_Gettime
198 (Clock_Id : clockid_t; Tp : access timespec) return int;
199 pragma Import (C, Clock_Gettime);
201 function To_Duration (TS : timespec) return Duration;
202 pragma Inline (To_Duration);
204 function To_Timespec (D : Duration) return timespec;
205 pragma Inline (To_Timespec);
207 type struct_timeval is private;
209 function To_Duration (TV : struct_timeval) return Duration;
210 pragma Inline (To_Duration);
212 function To_Timeval (D : Duration) return struct_timeval;
213 pragma Inline (To_Timeval);
215 -------------------------
216 -- Priority Scheduling --
217 -------------------------
219 SCHED_FIFO : constant := 0;
220 SCHED_RR : constant := 1;
221 SCHED_OTHER : constant := 2;
223 -------------
224 -- Process --
225 -------------
227 type pid_t is private;
229 function kill (pid : pid_t; sig : Signal) return int;
230 pragma Import (C, kill, "kill");
232 function getpid return pid_t;
233 pragma Import (C, getpid, "getpid");
235 -------------
236 -- Threads --
237 -------------
239 type Thread_Body is access
240 function (arg : System.Address) return System.Address;
242 function Thread_Body_Access is new
243 Unchecked_Conversion (System.Address, Thread_Body);
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 -----------
256 -- Stack --
257 -----------
259 function Get_Stack_Base (thread : pthread_t) return Address;
260 pragma Inline (Get_Stack_Base);
261 -- This is a dummy procedure to share some GNULLI files
263 ---------------------------------------
264 -- Nonstandard Thread Initialization --
265 ---------------------------------------
267 procedure pthread_init;
268 pragma Inline (pthread_init);
269 -- This is a dummy procedure to share some GNULLI files
271 -------------------------
272 -- POSIX.1c Section 3 --
273 -------------------------
275 function sigwait (set : access sigset_t) return int;
276 pragma Import (C, sigwait, "cma_sigwait");
278 function sigwait
279 (set : access sigset_t;
280 sig : access Signal) return int;
281 pragma Inline (sigwait);
282 -- DCE_THREADS has a nonstandard sigwait
284 function pthread_kill
285 (thread : pthread_t;
286 sig : Signal) return int;
287 pragma Inline (pthread_kill);
288 -- DCE_THREADS doesn't have pthread_kill
290 function pthread_sigmask
291 (how : int;
292 set : access sigset_t;
293 oset : access sigset_t) return int;
294 -- DCE THREADS does not have pthread_sigmask. Instead, it uses
295 -- sigprocmask to do the signal handling when the thread library is
296 -- sucked in.
297 pragma Import (C, pthread_sigmask, "sigprocmask");
299 --------------------------
300 -- POSIX.1c Section 11 --
301 --------------------------
303 function pthread_mutexattr_init
304 (attr : access pthread_mutexattr_t) return int;
305 -- DCE_THREADS has a nonstandard pthread_mutexattr_init.
307 function pthread_mutexattr_destroy
308 (attr : access pthread_mutexattr_t) return int;
309 -- DCE_THREADS has a nonstandard pthread_mutexattr_destroy
311 function pthread_mutex_init
312 (mutex : access pthread_mutex_t;
313 attr : access pthread_mutexattr_t) return int;
314 -- DCE_THREADS has a nonstandard pthread_mutex_init
316 function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
317 -- DCE_THREADS has a nonstandard pthread_mutex_destroy
319 function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
320 pragma Inline (pthread_mutex_lock);
321 -- DCE_THREADS has nonstandard pthread_mutex_lock
323 function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
324 pragma Inline (pthread_mutex_unlock);
325 -- DCE_THREADS has nonstandard pthread_mutex_lock
327 function pthread_condattr_init
328 (attr : access pthread_condattr_t) return int;
329 -- DCE_THREADS has nonstandard pthread_condattr_init
331 function pthread_condattr_destroy
332 (attr : access pthread_condattr_t) return int;
333 -- DCE_THREADS has nonstandard pthread_condattr_destroy
335 function pthread_cond_init
336 (cond : access pthread_cond_t;
337 attr : access pthread_condattr_t) return int;
338 -- DCE_THREADS has nonstandard pthread_cond_init
340 function pthread_cond_destroy (cond : access pthread_cond_t) return int;
341 -- DCE_THREADS has nonstandard pthread_cond_destroy
343 function pthread_cond_signal (cond : access pthread_cond_t) return int;
344 pragma Inline (pthread_cond_signal);
345 -- DCE_THREADS has nonstandard pthread_cond_signal
347 function pthread_cond_wait
348 (cond : access pthread_cond_t;
349 mutex : access pthread_mutex_t) return int;
350 pragma Inline (pthread_cond_wait);
351 -- DCE_THREADS has a nonstandard pthread_cond_wait
353 function pthread_cond_timedwait
354 (cond : access pthread_cond_t;
355 mutex : access pthread_mutex_t;
356 abstime : access timespec) return int;
357 pragma Inline (pthread_cond_timedwait);
358 -- DCE_THREADS has a nonstandard pthread_cond_timedwait
360 --------------------------
361 -- POSIX.1c Section 13 --
362 --------------------------
364 type struct_sched_param is record
365 sched_priority : int; -- scheduling priority
366 end record;
368 function pthread_setschedparam
369 (thread : pthread_t;
370 policy : int;
371 param : access struct_sched_param) return int;
372 pragma Inline (pthread_setschedparam);
373 -- DCE_THREADS has a nonstandard pthread_setschedparam
375 function sched_yield return int;
376 pragma Inline (sched_yield);
377 -- DCE_THREADS has a nonstandard sched_yield
379 ---------------------------
380 -- P1003.1c - Section 16 --
381 ---------------------------
383 function pthread_attr_init (attributes : access pthread_attr_t) return int;
384 pragma Inline (pthread_attr_init);
385 -- DCE_THREADS has a nonstandard pthread_attr_init
387 function pthread_attr_destroy
388 (attributes : access pthread_attr_t) return int;
389 pragma Inline (pthread_attr_destroy);
390 -- DCE_THREADS has a nonstandard pthread_attr_destroy
392 function pthread_attr_setstacksize
393 (attr : access pthread_attr_t;
394 stacksize : size_t) return int;
395 pragma Inline (pthread_attr_setstacksize);
396 -- DCE_THREADS has a nonstandard pthread_attr_setstacksize
398 function pthread_create
399 (thread : access pthread_t;
400 attributes : access pthread_attr_t;
401 start_routine : Thread_Body;
402 arg : System.Address) return int;
403 pragma Inline (pthread_create);
404 -- DCE_THREADS has a nonstandard pthread_create
406 procedure pthread_detach (thread : access pthread_t);
407 pragma Import (C, pthread_detach);
409 procedure pthread_exit (status : System.Address);
410 pragma Import (C, pthread_exit, "pthread_exit");
412 function pthread_self return pthread_t;
413 pragma Import (C, pthread_self, "pthread_self");
415 --------------------------
416 -- POSIX.1c Section 17 --
417 --------------------------
419 function pthread_setspecific
420 (key : pthread_key_t;
421 value : System.Address) return int;
422 pragma Inline (pthread_setspecific);
423 -- DCE_THREADS has a nonstandard pthread_setspecific
425 function pthread_getspecific (key : pthread_key_t) return System.Address;
426 pragma Inline (pthread_getspecific);
427 -- DCE_THREADS has a nonstandard pthread_getspecific
429 type destructor_pointer is access procedure (arg : System.Address);
431 function pthread_key_create
432 (key : access pthread_key_t;
433 destructor : destructor_pointer) return int;
434 pragma Inline (pthread_key_create);
435 -- DCE_THREADS has a nonstandard pthread_key_create
437 private
439 type array_type_1 is array (Integer range 0 .. 7) of unsigned_long;
440 type sigset_t is record
441 X_X_sigbits : array_type_1;
442 end record;
443 pragma Convention (C, sigset_t);
445 type pid_t is new int;
447 type time_t is new long;
449 type timespec is record
450 tv_sec : time_t;
451 tv_nsec : long;
452 end record;
453 pragma Convention (C, timespec);
455 type clockid_t is new int;
456 CLOCK_REALTIME : constant clockid_t := 1;
458 type struct_timeval is record
459 tv_sec : time_t;
460 tv_usec : time_t;
461 end record;
462 pragma Convention (C, struct_timeval);
464 type cma_t_address is new System.Address;
466 type cma_t_handle is record
467 field1 : cma_t_address;
468 field2 : Short_Integer;
469 field3 : Short_Integer;
470 end record;
471 for cma_t_handle'Size use 64;
473 type pthread_attr_t is new cma_t_handle;
474 pragma Convention (C_Pass_By_Copy, pthread_attr_t);
476 type pthread_condattr_t is new cma_t_handle;
477 pragma Convention (C_Pass_By_Copy, pthread_condattr_t);
479 type pthread_mutexattr_t is new cma_t_handle;
480 pragma Convention (C_Pass_By_Copy, pthread_mutexattr_t);
482 type pthread_t is new cma_t_handle;
483 pragma Convention (C_Pass_By_Copy, pthread_t);
485 type pthread_mutex_t is new cma_t_handle;
486 pragma Convention (C_Pass_By_Copy, pthread_mutex_t);
488 type pthread_cond_t is new cma_t_handle;
489 pragma Convention (C_Pass_By_Copy, pthread_cond_t);
491 type pthread_key_t is new int;
493 end System.OS_Interface;