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 HP-UX version of this package
37 -- This package encapsulates all direct interfaces to OS services
38 -- that are 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
50 pragma Linker_Options ("-lcma");
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;
66 function errno return int;
67 pragma Import (C, errno, "__get_errno");
69 EAGAIN : constant := 11;
70 EINTR : constant := 4;
71 EINVAL : constant := 22;
72 ENOMEM : constant := 12;
73 ETIME : constant := 52;
74 ETIMEDOUT : constant := 238;
76 FUNC_ERR : constant := -1;
82 Max_Interrupt : constant := 44;
83 type Signal is new int range 0 .. Max_Interrupt;
84 for Signal'Size use int'Size;
86 SIGHUP : constant := 1; -- hangup
87 SIGINT : constant := 2; -- interrupt (rubout)
88 SIGQUIT : constant := 3; -- quit (ASCD FS)
89 SIGILL : constant := 4; -- illegal instruction (not reset)
90 SIGTRAP : constant := 5; -- trace trap (not reset)
91 SIGIOT : constant := 6; -- IOT instruction
92 SIGABRT : constant := 6; -- used by abort, replace SIGIOT in the future
93 SIGEMT : constant := 7; -- EMT instruction
94 SIGFPE : constant := 8; -- floating point exception
95 SIGKILL : constant := 9; -- kill (cannot be caught or ignored)
96 SIGBUS : constant := 10; -- bus error
97 SIGSEGV : constant := 11; -- segmentation violation
98 SIGSYS : constant := 12; -- bad argument to system call
99 SIGPIPE : constant := 13; -- write on a pipe with no one to read it
100 SIGALRM : constant := 14; -- alarm clock
101 SIGTERM : constant := 15; -- software termination signal from kill
102 SIGUSR1 : constant := 16; -- user defined signal 1
103 SIGUSR2 : constant := 17; -- user defined signal 2
104 SIGCLD : constant := 18; -- alias for SIGCHLD
105 SIGCHLD : constant := 18; -- child status change
106 SIGPWR : constant := 19; -- power-fail restart
107 SIGVTALRM : constant := 20; -- virtual timer alarm
108 SIGPROF : constant := 21; -- profiling timer alarm
109 SIGIO : constant := 22; -- asynchronous I/O
110 SIGPOLL : constant := 22; -- pollable event occurred
111 SIGWINCH : constant := 23; -- window size change
112 SIGSTOP : constant := 24; -- stop (cannot be caught or ignored)
113 SIGTSTP : constant := 25; -- user stop requested from tty
114 SIGCONT : constant := 26; -- stopped process has been continued
115 SIGTTIN : constant := 27; -- background tty read attempted
116 SIGTTOU : constant := 28; -- background tty write attempted
117 SIGURG : constant := 29; -- urgent condition on IO channel
118 SIGLOST : constant := 30; -- remote lock lost (NFS)
119 SIGDIL : constant := 32; -- DIL signal
120 SIGXCPU : constant := 33; -- CPU time limit exceeded (setrlimit)
121 SIGXFSZ : constant := 34; -- file size limit exceeded (setrlimit)
123 SIGADAABORT : constant := SIGABRT;
124 -- Note: on other targets, we usually use SIGABRT, but on HP/UX, it
125 -- appears that SIGABRT can't be used in sigwait(), so we use SIGTERM.
127 type Signal_Set is array (Natural range <>) of Signal;
129 Unmasked : constant Signal_Set :=
130 (SIGBUS, SIGTRAP, SIGTTIN, SIGTTOU, SIGTSTP);
132 Reserved : constant Signal_Set := (SIGKILL, SIGSTOP);
134 type sigset_t is private;
136 type isr_address is access procedure (sig : int);
137 pragma Convention (C, isr_address);
139 function intr_attach (sig : int; handler : isr_address) return long;
141 Intr_Attach_Reset : constant Boolean := True;
142 -- True if intr_attach is reset after an interrupt handler is called
144 function sigaddset (set : access sigset_t; sig : Signal) return int;
145 pragma Import (C, sigaddset, "sigaddset");
147 function sigdelset (set : access sigset_t; sig : Signal) return int;
148 pragma Import (C, sigdelset, "sigdelset");
150 function sigfillset (set : access sigset_t) return int;
151 pragma Import (C, sigfillset, "sigfillset");
153 function sigismember (set : access sigset_t; sig : Signal) return int;
154 pragma Import (C, sigismember, "sigismember");
156 function sigemptyset (set : access sigset_t) return int;
157 pragma Import (C, sigemptyset, "sigemptyset");
159 type Signal_Handler is access procedure (signo : Signal);
161 type struct_sigaction is record
162 sa_handler : System.Address;
166 pragma Convention (C, struct_sigaction);
167 type struct_sigaction_ptr is access all struct_sigaction;
169 SA_RESTART : constant := 16#40#;
170 SA_SIGINFO : constant := 16#10#;
171 SA_ONSTACK : constant := 16#01#;
173 SIG_BLOCK : constant := 0;
174 SIG_UNBLOCK : constant := 1;
175 SIG_SETMASK : constant := 2;
177 SIG_DFL : constant := 0;
178 SIG_IGN : constant := 1;
179 SIG_ERR : constant := -1;
183 act : struct_sigaction_ptr;
184 oact : struct_sigaction_ptr) return int;
185 pragma Import (C, sigaction, "sigaction");
191 type timespec is private;
193 function nanosleep (rqtp, rmtp : access timespec) return int;
194 pragma Import (C, nanosleep);
196 type clockid_t is private;
198 CLOCK_REALTIME : constant clockid_t;
200 function Clock_Gettime
201 (Clock_Id : clockid_t; Tp : access timespec) return int;
202 pragma Import (C, Clock_Gettime);
204 function To_Duration (TS : timespec) return Duration;
205 pragma Inline (To_Duration);
207 function To_Timespec (D : Duration) return timespec;
208 pragma Inline (To_Timespec);
210 type struct_timeval is private;
212 function To_Duration (TV : struct_timeval) return Duration;
213 pragma Inline (To_Duration);
215 function To_Timeval (D : Duration) return struct_timeval;
216 pragma Inline (To_Timeval);
218 -------------------------
219 -- Priority Scheduling --
220 -------------------------
222 SCHED_FIFO : constant := 0;
223 SCHED_RR : constant := 1;
224 SCHED_OTHER : constant := 2;
230 type pid_t is private;
232 function kill (pid : pid_t; sig : Signal) return int;
233 pragma Import (C, kill, "kill");
235 function getpid return pid_t;
236 pragma Import (C, getpid, "getpid");
242 type Thread_Body is access
243 function (arg : System.Address) return System.Address;
244 pragma Convention (C, Thread_Body);
246 function Thread_Body_Access is new
247 Ada.Unchecked_Conversion (System.Address, Thread_Body);
249 type pthread_t is private;
250 subtype Thread_Id is pthread_t;
252 type pthread_mutex_t is limited private;
253 type pthread_cond_t is limited private;
254 type pthread_attr_t is limited private;
255 type pthread_mutexattr_t is limited private;
256 type pthread_condattr_t is limited private;
257 type pthread_key_t is private;
263 function Get_Stack_Base (thread : pthread_t) return Address;
264 pragma Inline (Get_Stack_Base);
265 -- This is a dummy procedure to share some GNULLI files
267 ---------------------------------------
268 -- Nonstandard Thread Initialization --
269 ---------------------------------------
271 procedure pthread_init;
272 pragma Inline (pthread_init);
273 -- This is a dummy procedure to share some GNULLI files
275 -------------------------
276 -- POSIX.1c Section 3 --
277 -------------------------
279 function sigwait (set : access sigset_t) return int;
280 pragma Import (C, sigwait, "cma_sigwait");
283 (set : access sigset_t;
284 sig : access Signal) return int;
285 pragma Inline (sigwait);
286 -- DCE_THREADS has a nonstandard sigwait
288 function pthread_kill
290 sig : Signal) return int;
291 pragma Inline (pthread_kill);
292 -- DCE_THREADS doesn't have pthread_kill
294 function pthread_sigmask
296 set : access sigset_t;
297 oset : access sigset_t) return int;
298 -- DCE THREADS does not have pthread_sigmask. Instead, it uses sigprocmask
299 -- to do the signal handling when the thread library is sucked in.
300 pragma Import (C, pthread_sigmask, "sigprocmask");
302 --------------------------
303 -- POSIX.1c Section 11 --
304 --------------------------
306 function pthread_mutexattr_init
307 (attr : access pthread_mutexattr_t) return int;
308 -- DCE_THREADS has a nonstandard pthread_mutexattr_init
310 function pthread_mutexattr_destroy
311 (attr : access pthread_mutexattr_t) return int;
312 -- DCE_THREADS has a nonstandard pthread_mutexattr_destroy
314 function pthread_mutex_init
315 (mutex : access pthread_mutex_t;
316 attr : access pthread_mutexattr_t) return int;
317 -- DCE_THREADS has a nonstandard pthread_mutex_init
319 function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
320 -- DCE_THREADS has a nonstandard pthread_mutex_destroy
322 function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
323 pragma Inline (pthread_mutex_lock);
324 -- DCE_THREADS has nonstandard pthread_mutex_lock
326 function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
327 pragma Inline (pthread_mutex_unlock);
328 -- DCE_THREADS has nonstandard pthread_mutex_lock
330 function pthread_condattr_init
331 (attr : access pthread_condattr_t) return int;
332 -- DCE_THREADS has nonstandard pthread_condattr_init
334 function pthread_condattr_destroy
335 (attr : access pthread_condattr_t) return int;
336 -- DCE_THREADS has nonstandard pthread_condattr_destroy
338 function pthread_cond_init
339 (cond : access pthread_cond_t;
340 attr : access pthread_condattr_t) return int;
341 -- DCE_THREADS has nonstandard pthread_cond_init
343 function pthread_cond_destroy (cond : access pthread_cond_t) return int;
344 -- DCE_THREADS has nonstandard pthread_cond_destroy
346 function pthread_cond_signal (cond : access pthread_cond_t) return int;
347 pragma Inline (pthread_cond_signal);
348 -- DCE_THREADS has nonstandard pthread_cond_signal
350 function pthread_cond_wait
351 (cond : access pthread_cond_t;
352 mutex : access pthread_mutex_t) return int;
353 pragma Inline (pthread_cond_wait);
354 -- DCE_THREADS has a nonstandard pthread_cond_wait
356 function pthread_cond_timedwait
357 (cond : access pthread_cond_t;
358 mutex : access pthread_mutex_t;
359 abstime : access timespec) return int;
360 pragma Inline (pthread_cond_timedwait);
361 -- DCE_THREADS has a nonstandard pthread_cond_timedwait
363 --------------------------
364 -- POSIX.1c Section 13 --
365 --------------------------
367 type struct_sched_param is record
368 sched_priority : int; -- scheduling priority
371 function pthread_setschedparam
374 param : access struct_sched_param) return int;
375 pragma Inline (pthread_setschedparam);
376 -- DCE_THREADS has a nonstandard pthread_setschedparam
378 function sched_yield return int;
379 pragma Inline (sched_yield);
380 -- DCE_THREADS has a nonstandard sched_yield
382 ---------------------------
383 -- P1003.1c - Section 16 --
384 ---------------------------
386 function pthread_attr_init (attributes : access pthread_attr_t) return int;
387 pragma Inline (pthread_attr_init);
388 -- DCE_THREADS has a nonstandard pthread_attr_init
390 function pthread_attr_destroy
391 (attributes : access pthread_attr_t) return int;
392 pragma Inline (pthread_attr_destroy);
393 -- DCE_THREADS has a nonstandard pthread_attr_destroy
395 function pthread_attr_setstacksize
396 (attr : access pthread_attr_t;
397 stacksize : size_t) return int;
398 pragma Inline (pthread_attr_setstacksize);
399 -- DCE_THREADS has a nonstandard pthread_attr_setstacksize
401 function pthread_create
402 (thread : access pthread_t;
403 attributes : access pthread_attr_t;
404 start_routine : Thread_Body;
405 arg : System.Address) return int;
406 pragma Inline (pthread_create);
407 -- DCE_THREADS has a nonstandard pthread_create
409 procedure pthread_detach (thread : access pthread_t);
410 pragma Import (C, pthread_detach);
412 procedure pthread_exit (status : System.Address);
413 pragma Import (C, pthread_exit, "pthread_exit");
415 function pthread_self return pthread_t;
416 pragma Import (C, pthread_self, "pthread_self");
418 --------------------------
419 -- POSIX.1c Section 17 --
420 --------------------------
422 function pthread_setspecific
423 (key : pthread_key_t;
424 value : System.Address) return int;
425 pragma Inline (pthread_setspecific);
426 -- DCE_THREADS has a nonstandard pthread_setspecific
428 function pthread_getspecific (key : pthread_key_t) return System.Address;
429 pragma Inline (pthread_getspecific);
430 -- DCE_THREADS has a nonstandard pthread_getspecific
432 type destructor_pointer is access procedure (arg : System.Address);
433 pragma Convention (C, destructor_pointer);
435 function pthread_key_create
436 (key : access pthread_key_t;
437 destructor : destructor_pointer) return int;
438 pragma Inline (pthread_key_create);
439 -- DCE_THREADS has a nonstandard pthread_key_create
443 type array_type_1 is array (Integer range 0 .. 7) of unsigned_long;
444 type sigset_t is record
445 X_X_sigbits : array_type_1;
447 pragma Convention (C, sigset_t);
449 type pid_t is new int;
451 type time_t is new long;
453 type timespec is record
457 pragma Convention (C, timespec);
459 type clockid_t is new int;
460 CLOCK_REALTIME : constant clockid_t := 1;
462 type struct_timeval is record
466 pragma Convention (C, struct_timeval);
468 type cma_t_address is new System.Address;
470 type cma_t_handle is record
471 field1 : cma_t_address;
472 field2 : Short_Integer;
473 field3 : Short_Integer;
475 for cma_t_handle'Size use 64;
477 type pthread_attr_t is new cma_t_handle;
478 pragma Convention (C_Pass_By_Copy, pthread_attr_t);
480 type pthread_condattr_t is new cma_t_handle;
481 pragma Convention (C_Pass_By_Copy, pthread_condattr_t);
483 type pthread_mutexattr_t is new cma_t_handle;
484 pragma Convention (C_Pass_By_Copy, pthread_mutexattr_t);
486 type pthread_t is new cma_t_handle;
487 pragma Convention (C_Pass_By_Copy, pthread_t);
489 type pthread_mutex_t is new cma_t_handle;
490 pragma Convention (C_Pass_By_Copy, pthread_mutex_t);
492 type pthread_cond_t is new cma_t_handle;
493 pragma Convention (C_Pass_By_Copy, pthread_cond_t);
495 type pthread_key_t is new int;
497 end System.OS_Interface;