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) 1995-2007, 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 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.
44 with Ada.Unchecked_Conversion;
46 package System.OS_Interface is
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;
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;
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);
136 pragma Convention (C, isr_address);
138 function intr_attach (sig : int; handler : isr_address) return long;
140 Intr_Attach_Reset : constant Boolean := True;
141 -- True if intr_attach is reset after an interrupt handler is called
143 function sigaddset (set : access sigset_t; sig : Signal) return int;
144 pragma Import (C, sigaddset, "sigaddset");
146 function sigdelset (set : access sigset_t; sig : Signal) return int;
147 pragma Import (C, sigdelset, "sigdelset");
149 function sigfillset (set : access sigset_t) return int;
150 pragma Import (C, sigfillset, "sigfillset");
152 function sigismember (set : access sigset_t; sig : Signal) return int;
153 pragma Import (C, sigismember, "sigismember");
155 function sigemptyset (set : access sigset_t) return int;
156 pragma Import (C, sigemptyset, "sigemptyset");
158 type Signal_Handler is access procedure (signo : Signal);
160 type struct_sigaction is record
161 sa_handler : System.Address;
165 pragma Convention (C, struct_sigaction);
166 type struct_sigaction_ptr is access all struct_sigaction;
168 SA_RESTART : constant := 16#40#;
169 SA_SIGINFO : constant := 16#10#;
171 SIG_BLOCK : constant := 0;
172 SIG_UNBLOCK : constant := 1;
173 SIG_SETMASK : constant := 2;
175 SIG_DFL : constant := 0;
176 SIG_IGN : constant := 1;
177 SIG_ERR : constant := -1;
181 act : struct_sigaction_ptr;
182 oact : struct_sigaction_ptr) return int;
183 pragma Import (C, sigaction, "sigaction");
189 type timespec is private;
191 function nanosleep (rqtp, rmtp : access timespec) return int;
192 pragma Import (C, nanosleep);
194 type clockid_t is private;
196 CLOCK_REALTIME : constant clockid_t;
198 function Clock_Gettime
199 (Clock_Id : clockid_t; Tp : access timespec) return int;
200 pragma Import (C, Clock_Gettime);
202 function To_Duration (TS : timespec) return Duration;
203 pragma Inline (To_Duration);
205 function To_Timespec (D : Duration) return timespec;
206 pragma Inline (To_Timespec);
208 type struct_timeval is private;
210 function To_Duration (TV : struct_timeval) return Duration;
211 pragma Inline (To_Duration);
213 function To_Timeval (D : Duration) return struct_timeval;
214 pragma Inline (To_Timeval);
216 -------------------------
217 -- Priority Scheduling --
218 -------------------------
220 SCHED_FIFO : constant := 0;
221 SCHED_RR : constant := 1;
222 SCHED_OTHER : constant := 2;
228 type pid_t is private;
230 function kill (pid : pid_t; sig : Signal) return int;
231 pragma Import (C, kill, "kill");
233 function getpid return pid_t;
234 pragma Import (C, getpid, "getpid");
240 type Thread_Body is access
241 function (arg : System.Address) return System.Address;
242 pragma Convention (C, Thread_Body);
244 function Thread_Body_Access is new
245 Ada.Unchecked_Conversion (System.Address, Thread_Body);
247 type pthread_t is private;
248 subtype Thread_Id is pthread_t;
250 type pthread_mutex_t is limited private;
251 type pthread_cond_t is limited private;
252 type pthread_attr_t is limited private;
253 type pthread_mutexattr_t is limited private;
254 type pthread_condattr_t is limited private;
255 type pthread_key_t is private;
261 function Get_Stack_Base (thread : pthread_t) return Address;
262 pragma Inline (Get_Stack_Base);
263 -- This is a dummy procedure to share some GNULLI files
265 ---------------------------------------
266 -- Nonstandard Thread Initialization --
267 ---------------------------------------
269 procedure pthread_init;
270 pragma Inline (pthread_init);
271 -- This is a dummy procedure to share some GNULLI files
273 -------------------------
274 -- POSIX.1c Section 3 --
275 -------------------------
277 function sigwait (set : access sigset_t) return int;
278 pragma Import (C, sigwait, "cma_sigwait");
281 (set : access sigset_t;
282 sig : access Signal) return int;
283 pragma Inline (sigwait);
284 -- DCE_THREADS has a nonstandard sigwait
286 function pthread_kill
288 sig : Signal) return int;
289 pragma Inline (pthread_kill);
290 -- DCE_THREADS doesn't have pthread_kill
292 function pthread_sigmask
294 set : access sigset_t;
295 oset : access sigset_t) return int;
296 -- DCE THREADS does not have pthread_sigmask. Instead, it uses sigprocmask
297 -- to do the signal handling when the thread library is sucked in.
298 pragma Import (C, pthread_sigmask, "sigprocmask");
300 --------------------------
301 -- POSIX.1c Section 11 --
302 --------------------------
304 function pthread_mutexattr_init
305 (attr : access pthread_mutexattr_t) return int;
306 -- DCE_THREADS has a nonstandard pthread_mutexattr_init
308 function pthread_mutexattr_destroy
309 (attr : access pthread_mutexattr_t) return int;
310 -- DCE_THREADS has a nonstandard pthread_mutexattr_destroy
312 function pthread_mutex_init
313 (mutex : access pthread_mutex_t;
314 attr : access pthread_mutexattr_t) return int;
315 -- DCE_THREADS has a nonstandard pthread_mutex_init
317 function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
318 -- DCE_THREADS has a nonstandard pthread_mutex_destroy
320 function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
321 pragma Inline (pthread_mutex_lock);
322 -- DCE_THREADS has nonstandard pthread_mutex_lock
324 function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
325 pragma Inline (pthread_mutex_unlock);
326 -- DCE_THREADS has nonstandard pthread_mutex_lock
328 function pthread_condattr_init
329 (attr : access pthread_condattr_t) return int;
330 -- DCE_THREADS has nonstandard pthread_condattr_init
332 function pthread_condattr_destroy
333 (attr : access pthread_condattr_t) return int;
334 -- DCE_THREADS has nonstandard pthread_condattr_destroy
336 function pthread_cond_init
337 (cond : access pthread_cond_t;
338 attr : access pthread_condattr_t) return int;
339 -- DCE_THREADS has nonstandard pthread_cond_init
341 function pthread_cond_destroy (cond : access pthread_cond_t) return int;
342 -- DCE_THREADS has nonstandard pthread_cond_destroy
344 function pthread_cond_signal (cond : access pthread_cond_t) return int;
345 pragma Inline (pthread_cond_signal);
346 -- DCE_THREADS has nonstandard pthread_cond_signal
348 function pthread_cond_wait
349 (cond : access pthread_cond_t;
350 mutex : access pthread_mutex_t) return int;
351 pragma Inline (pthread_cond_wait);
352 -- DCE_THREADS has a nonstandard pthread_cond_wait
354 function pthread_cond_timedwait
355 (cond : access pthread_cond_t;
356 mutex : access pthread_mutex_t;
357 abstime : access timespec) return int;
358 pragma Inline (pthread_cond_timedwait);
359 -- DCE_THREADS has a nonstandard pthread_cond_timedwait
361 --------------------------
362 -- POSIX.1c Section 13 --
363 --------------------------
365 type struct_sched_param is record
366 sched_priority : int; -- scheduling priority
369 function pthread_setschedparam
372 param : access struct_sched_param) return int;
373 pragma Inline (pthread_setschedparam);
374 -- DCE_THREADS has a nonstandard pthread_setschedparam
376 function sched_yield return int;
377 pragma Inline (sched_yield);
378 -- DCE_THREADS has a nonstandard sched_yield
380 ---------------------------
381 -- P1003.1c - Section 16 --
382 ---------------------------
384 function pthread_attr_init (attributes : access pthread_attr_t) return int;
385 pragma Inline (pthread_attr_init);
386 -- DCE_THREADS has a nonstandard pthread_attr_init
388 function pthread_attr_destroy
389 (attributes : access pthread_attr_t) return int;
390 pragma Inline (pthread_attr_destroy);
391 -- DCE_THREADS has a nonstandard pthread_attr_destroy
393 function pthread_attr_setstacksize
394 (attr : access pthread_attr_t;
395 stacksize : size_t) return int;
396 pragma Inline (pthread_attr_setstacksize);
397 -- DCE_THREADS has a nonstandard pthread_attr_setstacksize
399 function pthread_create
400 (thread : access pthread_t;
401 attributes : access pthread_attr_t;
402 start_routine : Thread_Body;
403 arg : System.Address) return int;
404 pragma Inline (pthread_create);
405 -- DCE_THREADS has a nonstandard pthread_create
407 procedure pthread_detach (thread : access pthread_t);
408 pragma Import (C, pthread_detach);
410 procedure pthread_exit (status : System.Address);
411 pragma Import (C, pthread_exit, "pthread_exit");
413 function pthread_self return pthread_t;
414 pragma Import (C, pthread_self, "pthread_self");
416 --------------------------
417 -- POSIX.1c Section 17 --
418 --------------------------
420 function pthread_setspecific
421 (key : pthread_key_t;
422 value : System.Address) return int;
423 pragma Inline (pthread_setspecific);
424 -- DCE_THREADS has a nonstandard pthread_setspecific
426 function pthread_getspecific (key : pthread_key_t) return System.Address;
427 pragma Inline (pthread_getspecific);
428 -- DCE_THREADS has a nonstandard pthread_getspecific
430 type destructor_pointer is access procedure (arg : System.Address);
431 pragma Convention (C, destructor_pointer);
433 function pthread_key_create
434 (key : access pthread_key_t;
435 destructor : destructor_pointer) return int;
436 pragma Inline (pthread_key_create);
437 -- DCE_THREADS has a nonstandard pthread_key_create
441 type array_type_1 is array (Integer range 0 .. 7) of unsigned_long;
442 type sigset_t is record
443 X_X_sigbits : array_type_1;
445 pragma Convention (C, sigset_t);
447 type pid_t is new int;
449 type time_t is new long;
451 type timespec is record
455 pragma Convention (C, timespec);
457 type clockid_t is new int;
458 CLOCK_REALTIME : constant clockid_t := 1;
460 type struct_timeval is record
464 pragma Convention (C, struct_timeval);
466 type cma_t_address is new System.Address;
468 type cma_t_handle is record
469 field1 : cma_t_address;
470 field2 : Short_Integer;
471 field3 : Short_Integer;
473 for cma_t_handle'Size use 64;
475 type pthread_attr_t is new cma_t_handle;
476 pragma Convention (C_Pass_By_Copy, pthread_attr_t);
478 type pthread_condattr_t is new cma_t_handle;
479 pragma Convention (C_Pass_By_Copy, pthread_condattr_t);
481 type pthread_mutexattr_t is new cma_t_handle;
482 pragma Convention (C_Pass_By_Copy, pthread_mutexattr_t);
484 type pthread_t is new cma_t_handle;
485 pragma Convention (C_Pass_By_Copy, pthread_t);
487 type pthread_mutex_t is new cma_t_handle;
488 pragma Convention (C_Pass_By_Copy, pthread_mutex_t);
490 type pthread_cond_t is new cma_t_handle;
491 pragma Convention (C_Pass_By_Copy, pthread_cond_t);
493 type pthread_key_t is new int;
495 end System.OS_Interface;