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) 1999-2003 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 a HPUX 11.0 (Native THREADS) 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
47 pragma Linker_Options ("-lpthread");
49 subtype int is Interfaces.C.int;
50 subtype short is Interfaces.C.short;
51 subtype long is Interfaces.C.long;
52 subtype unsigned is Interfaces.C.unsigned;
53 subtype unsigned_short is Interfaces.C.unsigned_short;
54 subtype unsigned_long is Interfaces.C.unsigned_long;
55 subtype unsigned_char is Interfaces.C.unsigned_char;
56 subtype plain_char is Interfaces.C.plain_char;
57 subtype size_t is Interfaces.C.size_t;
63 function errno return int;
64 pragma Import (C, errno, "__get_errno");
66 EAGAIN : constant := 11;
67 EINTR : constant := 4;
68 EINVAL : constant := 22;
69 ENOMEM : constant := 12;
70 ETIMEDOUT : constant := 238;
76 Max_Interrupt : constant := 44;
77 type Signal is new int range 0 .. Max_Interrupt;
78 for Signal'Size use int'Size;
80 SIGHUP : constant := 1; -- hangup
81 SIGINT : constant := 2; -- interrupt (rubout)
82 SIGQUIT : constant := 3; -- quit (ASCD FS)
83 SIGILL : constant := 4; -- illegal instruction (not reset)
84 SIGTRAP : constant := 5; -- trace trap (not reset)
85 SIGIOT : constant := 6; -- IOT instruction
86 SIGABRT : constant := 6; -- used by abort, replace SIGIOT in the future
87 SIGEMT : constant := 7; -- EMT instruction
88 SIGFPE : constant := 8; -- floating point exception
89 SIGKILL : constant := 9; -- kill (cannot be caught or ignored)
90 SIGBUS : constant := 10; -- bus error
91 SIGSEGV : constant := 11; -- segmentation violation
92 SIGSYS : constant := 12; -- bad argument to system call
93 SIGPIPE : constant := 13; -- write on a pipe with no one to read it
94 SIGALRM : constant := 14; -- alarm clock
95 SIGTERM : constant := 15; -- software termination signal from kill
96 SIGUSR1 : constant := 16; -- user defined signal 1
97 SIGUSR2 : constant := 17; -- user defined signal 2
98 SIGCLD : constant := 18; -- alias for SIGCHLD
99 SIGCHLD : constant := 18; -- child status change
100 SIGPWR : constant := 19; -- power-fail restart
101 SIGVTALRM : constant := 20; -- virtual timer alarm
102 SIGPROF : constant := 21; -- profiling timer alarm
103 SIGIO : constant := 22; -- asynchronous I/O
104 SIGPOLL : constant := 22; -- pollable event occurred
105 SIGWINCH : constant := 23; -- window size change
106 SIGSTOP : constant := 24; -- stop (cannot be caught or ignored)
107 SIGTSTP : constant := 25; -- user stop requested from tty
108 SIGCONT : constant := 26; -- stopped process has been continued
109 SIGTTIN : constant := 27; -- background tty read attempted
110 SIGTTOU : constant := 28; -- background tty write attempted
111 SIGURG : constant := 29; -- urgent condition on IO channel
112 SIGLOST : constant := 30; -- remote lock lost (NFS)
113 SIGDIL : constant := 32; -- DIL signal
114 SIGXCPU : constant := 33; -- CPU time limit exceeded (setrlimit)
115 SIGXFSZ : constant := 34; -- file size limit exceeded (setrlimit)
116 SIGCANCEL : constant := 35; -- used for pthread cancellation.
117 SIGGFAULT : constant := 36; -- Graphics framebuffer fault
119 SIGADAABORT : constant := SIGABRT;
120 -- Note: on other targets, we usually use SIGABRT, but on HPUX, it
121 -- appears that SIGABRT can't be used in sigwait(), so we use SIGTERM.
123 type Signal_Set is array (Natural range <>) of Signal;
125 Unmasked : constant Signal_Set :=
126 (SIGABRT, SIGPIPE, SIGBUS, SIGTRAP, SIGTTIN, SIGTTOU, SIGTSTP, SIGPROF,
127 SIGALRM, SIGVTALRM, SIGIO, SIGCHLD);
129 Reserved : constant Signal_Set := (SIGKILL, SIGSTOP);
131 type sigset_t is private;
133 function sigaddset (set : access sigset_t; sig : Signal) return int;
134 pragma Import (C, sigaddset, "sigaddset");
136 function sigdelset (set : access sigset_t; sig : Signal) return int;
137 pragma Import (C, sigdelset, "sigdelset");
139 function sigfillset (set : access sigset_t) return int;
140 pragma Import (C, sigfillset, "sigfillset");
142 function sigismember (set : access sigset_t; sig : Signal) return int;
143 pragma Import (C, sigismember, "sigismember");
145 function sigemptyset (set : access sigset_t) return int;
146 pragma Import (C, sigemptyset, "sigemptyset");
148 type struct_sigaction is record
149 sa_handler : System.Address;
153 pragma Convention (C, struct_sigaction);
154 type struct_sigaction_ptr is access all struct_sigaction;
156 SA_SIGINFO : constant := 16#10#;
158 SIG_BLOCK : constant := 0;
159 SIG_UNBLOCK : constant := 1;
160 SIG_SETMASK : constant := 2;
162 SIG_DFL : constant := 0;
163 SIG_IGN : constant := 1;
167 act : struct_sigaction_ptr;
168 oact : struct_sigaction_ptr) return int;
169 pragma Import (C, sigaction, "sigaction");
175 Time_Slice_Supported : constant Boolean := True;
176 -- Indicates wether time slicing is supported
178 type timespec is private;
180 type clockid_t is private;
182 CLOCK_REALTIME : constant clockid_t;
184 function clock_gettime
185 (clock_id : clockid_t;
186 tp : access timespec) return int;
187 pragma Import (C, clock_gettime, "clock_gettime");
189 function clock_getres
190 (clock_id : clockid_t;
191 res : access timespec) return int;
192 pragma Import (C, clock_getres, "clock_getres");
194 function To_Duration (TS : timespec) return Duration;
195 pragma Inline (To_Duration);
197 function To_Timespec (D : Duration) return timespec;
198 pragma Inline (To_Timespec);
200 type struct_timezone is record
201 tz_minuteswest : int;
204 pragma Convention (C, struct_timezone);
205 type struct_timezone_ptr is access all struct_timezone;
207 type struct_timeval is private;
208 -- This is needed on systems that do not have clock_gettime()
209 -- but do have gettimeofday().
211 function To_Duration (TV : struct_timeval) return Duration;
212 pragma Inline (To_Duration);
214 function To_Timeval (D : Duration) return struct_timeval;
215 pragma Inline (To_Timeval);
217 -------------------------
218 -- Priority Scheduling --
219 -------------------------
221 SCHED_FIFO : constant := 0;
222 SCHED_RR : constant := 1;
223 SCHED_OTHER : constant := 2;
229 type pid_t is private;
231 function kill (pid : pid_t; sig : Signal) return int;
232 pragma Import (C, kill, "kill");
234 function getpid return pid_t;
235 pragma Import (C, getpid, "getpid");
241 function lwp_self return System.Address;
242 pragma Import (C, lwp_self, "_lwp_self");
248 type Thread_Body is access
249 function (arg : System.Address) return System.Address;
250 type pthread_t is private;
251 subtype Thread_Id is pthread_t;
253 type pthread_mutex_t is limited private;
254 type pthread_cond_t is limited private;
255 type pthread_attr_t is limited private;
256 type pthread_mutexattr_t is limited private;
257 type pthread_condattr_t is limited private;
258 type pthread_key_t is private;
260 PTHREAD_CREATE_DETACHED : constant := 16#de#;
266 Stack_Base_Available : constant Boolean := False;
267 -- Indicates wether the stack base is available on this target.
269 function Get_Stack_Base (thread : pthread_t) return Address;
270 pragma Inline (Get_Stack_Base);
271 -- returns the stack base of the specified thread.
272 -- Only call this function when Stack_Base_Available is True.
274 function Get_Page_Size return size_t;
275 function Get_Page_Size return Address;
276 pragma Import (C, Get_Page_Size, "getpagesize");
277 -- returns the size of a page, or 0 if this is not relevant on this
280 PROT_NONE : constant := 0;
281 PROT_READ : constant := 1;
282 PROT_WRITE : constant := 2;
283 PROT_EXEC : constant := 4;
284 PROT_ALL : constant := PROT_READ + PROT_WRITE + PROT_EXEC;
286 PROT_ON : constant := PROT_READ;
287 PROT_OFF : constant := PROT_ALL;
289 function mprotect (addr : Address; len : size_t; prot : int) return int;
290 pragma Import (C, mprotect);
292 ---------------------------------------
293 -- Nonstandard Thread Initialization --
294 ---------------------------------------
296 procedure pthread_init;
297 pragma Inline (pthread_init);
298 -- This is a dummy procedure to share some GNULLI files
300 -------------------------
301 -- POSIX.1c Section 3 --
302 -------------------------
305 (set : access sigset_t;
306 sig : access Signal) return int;
307 pragma Import (C, sigwait, "sigwait");
309 function pthread_kill
311 sig : Signal) return int;
312 pragma Import (C, pthread_kill, "pthread_kill");
314 type sigset_t_ptr is access all sigset_t;
316 function pthread_sigmask
319 oset : sigset_t_ptr) return int;
320 pragma Import (C, pthread_sigmask, "pthread_sigmask");
322 --------------------------
323 -- POSIX.1c Section 11 --
324 --------------------------
326 function pthread_mutexattr_init
327 (attr : access pthread_mutexattr_t) return int;
328 pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
330 function pthread_mutexattr_destroy
331 (attr : access pthread_mutexattr_t) return int;
332 pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
334 function pthread_mutex_init
335 (mutex : access pthread_mutex_t;
336 attr : access pthread_mutexattr_t) return int;
337 pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
339 function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
340 pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
342 function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
343 pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
345 function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
346 pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
348 function pthread_condattr_init
349 (attr : access pthread_condattr_t) return int;
350 pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
352 function pthread_condattr_destroy
353 (attr : access pthread_condattr_t) return int;
354 pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
356 function pthread_cond_init
357 (cond : access pthread_cond_t;
358 attr : access pthread_condattr_t) return int;
359 pragma Import (C, pthread_cond_init, "pthread_cond_init");
361 function pthread_cond_destroy (cond : access pthread_cond_t) return int;
362 pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
364 function pthread_cond_signal (cond : access pthread_cond_t) return int;
365 pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
367 function pthread_cond_wait
368 (cond : access pthread_cond_t;
369 mutex : access pthread_mutex_t) return int;
370 pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
372 function pthread_cond_timedwait
373 (cond : access pthread_cond_t;
374 mutex : access pthread_mutex_t;
375 abstime : access timespec) return int;
376 pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
378 Relative_Timed_Wait : constant Boolean := False;
379 -- pthread_cond_timedwait requires an absolute delay time
381 ----------------------------
382 -- POSIX.1c Section 13 --
383 ----------------------------
385 PTHREAD_PRIO_NONE : constant := 16#100#;
386 PTHREAD_PRIO_PROTECT : constant := 16#200#;
387 PTHREAD_PRIO_INHERIT : constant := 16#400#;
389 function pthread_mutexattr_setprotocol
390 (attr : access pthread_mutexattr_t;
391 protocol : int) return int;
392 pragma Import (C, pthread_mutexattr_setprotocol);
394 function pthread_mutexattr_setprioceiling
395 (attr : access pthread_mutexattr_t;
396 prioceiling : int) return int;
397 pragma Import (C, pthread_mutexattr_setprioceiling);
399 type Array_7_Int is array (0 .. 6) of int;
400 type struct_sched_param is record
401 sched_priority : int;
402 sched_reserved : Array_7_Int;
405 function pthread_setschedparam
408 param : access struct_sched_param)
410 pragma Import (C, pthread_setschedparam, "pthread_setschedparam");
412 function pthread_attr_setscope
413 (attr : access pthread_attr_t;
414 contentionscope : int) return int;
415 pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
417 function pthread_attr_setinheritsched
418 (attr : access pthread_attr_t;
419 inheritsched : int) return int;
420 pragma Import (C, pthread_attr_setinheritsched);
422 function pthread_attr_setschedpolicy
423 (attr : access pthread_attr_t;
424 policy : int) return int;
425 pragma Import (C, pthread_attr_setschedpolicy);
427 function sched_yield return int;
428 pragma Import (C, sched_yield, "sched_yield");
430 ---------------------------
431 -- P1003.1c - Section 16 --
432 ---------------------------
434 function pthread_attr_init
435 (attributes : access pthread_attr_t) return int;
436 pragma Import (C, pthread_attr_init, "__pthread_attr_init_system");
438 function pthread_attr_destroy
439 (attributes : access pthread_attr_t) return int;
440 pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
442 function pthread_attr_setdetachstate
443 (attr : access pthread_attr_t;
444 detachstate : int) return int;
445 pragma Import (C, pthread_attr_setdetachstate);
447 function pthread_attr_setstacksize
448 (attr : access pthread_attr_t;
449 stacksize : size_t) return int;
450 pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize");
452 function pthread_create
453 (thread : access pthread_t;
454 attributes : access pthread_attr_t;
455 start_routine : Thread_Body;
456 arg : System.Address) return int;
457 pragma Import (C, pthread_create, "__pthread_create_system");
459 procedure pthread_exit (status : System.Address);
460 pragma Import (C, pthread_exit, "pthread_exit");
462 function pthread_self return pthread_t;
463 pragma Import (C, pthread_self, "pthread_self");
465 --------------------------
466 -- POSIX.1c Section 17 --
467 --------------------------
469 function pthread_setspecific
470 (key : pthread_key_t;
471 value : System.Address) return int;
472 pragma Import (C, pthread_setspecific, "pthread_setspecific");
474 function pthread_getspecific (key : pthread_key_t) return System.Address;
475 pragma Import (C, pthread_getspecific, "pthread_getspecific");
477 type destructor_pointer is access procedure (arg : System.Address);
479 function pthread_key_create
480 (key : access pthread_key_t;
481 destructor : destructor_pointer) return int;
482 pragma Import (C, pthread_key_create, "pthread_key_create");
486 type unsigned_int_array_8 is array (0 .. 7) of unsigned;
487 type sigset_t is record
488 sigset : unsigned_int_array_8;
490 pragma Convention (C_Pass_By_Copy, sigset_t);
492 type pid_t is new int;
494 type time_t is new long;
496 type timespec is record
500 pragma Convention (C, timespec);
502 type clockid_t is new int;
503 CLOCK_REALTIME : constant clockid_t := 1;
505 type struct_timeval is record
509 pragma Convention (C, struct_timeval);
511 type pthread_attr_t is new int;
512 type pthread_condattr_t is new int;
513 type pthread_mutexattr_t is new int;
514 type pthread_t is new int;
516 type short_array is array (Natural range <>) of short;
517 type int_array is array (Natural range <>) of int;
519 type pthread_mutex_t is record
520 m_short : short_array (0 .. 1);
522 m_int1 : int_array (0 .. 3);
523 m_pad : int; -- needed for 32 bit ABI, but *not* for 64 bit
524 m_ptr : System.Address;
525 m_int2 : int_array (0 .. 1);
526 m_int3 : int_array (0 .. 3);
527 m_short2 : short_array (0 .. 1);
528 m_int4 : int_array (0 .. 4);
529 m_int5 : int_array (0 .. 1);
531 pragma Convention (C, pthread_mutex_t);
533 type pthread_cond_t is record
534 c_short : short_array (0 .. 1);
536 c_int1 : int_array (0 .. 3);
537 m_pad : int; -- needed for 32 bit ABI, but *not* for 64 bit
538 m_ptr : System.Address;
539 c_int2 : int_array (0 .. 1);
540 c_int3 : int_array (0 .. 1);
541 c_int4 : int_array (0 .. 1);
543 pragma Convention (C, pthread_cond_t);
545 type pthread_key_t is new int;
547 end System.OS_Interface;