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 --
10 -- Copyright (C) 1999-2001 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, 59 Temple Place - Suite 330, Boston, --
21 -- MA 02111-1307, 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 a LynxOS (Native) 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
41 -- or remove the pragma Elaborate_Body.
42 -- It is designed to be a bottom-level (leaf) package.
45 package System
.OS_Interface
is
48 pragma Linker_Options
("-mthreads");
50 subtype int
is Interfaces
.C
.int
;
51 subtype char
is Interfaces
.C
.char
;
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 ETIMEDOUT
: constant := 60;
78 Max_Interrupt
: constant := 63;
79 type Signal
is new int
range 0 .. Max_Interrupt
;
80 for Signal
'Size use int
'Size;
82 SIGHUP
: constant := 1; -- hangup
83 SIGINT
: constant := 2; -- interrupt (rubout)
84 SIGQUIT
: constant := 3; -- quit (ASCD FS)
85 SIGILL
: constant := 4; -- illegal instruction (not reset)
86 SIGTRAP
: constant := 5; -- trace trap (not reset)
87 SIGBRK
: constant := 6; -- break
88 SIGIOT
: constant := 6; -- IOT instruction
89 SIGABRT
: constant := 6; -- used by abort, replace SIGIOT in the future
90 SIGCORE
: constant := 7; -- kill with core dump
91 SIGEMT
: constant := 7; -- EMT instruction
92 SIGFPE
: constant := 8; -- floating point exception
93 SIGKILL
: constant := 9; -- kill (cannot be caught or ignored)
94 SIGBUS
: constant := 10; -- bus error
95 SIGSEGV
: constant := 11; -- segmentation violation
96 SIGSYS
: constant := 12; -- bad argument to system call
97 SIGPIPE
: constant := 13; -- write on a pipe with no one to read it
98 SIGALRM
: constant := 14; -- alarm clock
99 SIGTERM
: constant := 15; -- software termination signal from kill
100 SIGURG
: constant := 16; -- urgent condition on IO channel
101 SIGSTOP
: constant := 17; -- stop (cannot be caught or ignored)
102 SIGTSTP
: constant := 18; -- user stop requested from tty
103 SIGCONT
: constant := 19; -- stopped process has been continued
104 SIGCLD
: constant := 20; -- alias for SIGCHLD
105 SIGCHLD
: constant := 20; -- child status change
106 SIGTTIN
: constant := 21; -- background tty read attempted
107 SIGTTOU
: constant := 22; -- background tty write attempted
108 SIGIO
: constant := 23; -- I/O possible (Solaris SIGPOLL alias)
109 SIGPOLL
: constant := 23; -- pollable event occurred
110 SIGXCPU
: constant := 24; -- CPU time limit exceeded
111 SIGXFSZ
: constant := 25; -- filesize limit exceeded
112 SIGVTALRM
: constant := 26; -- virtual timer expired
113 SIGPROF
: constant := 27; -- profiling timer expired
114 SIGWINCH
: constant := 28; -- window size change
115 SIGLOST
: constant := 29; -- SUN 4.1 compatibility
116 SIGUSR1
: constant := 30; -- user defined signal 1
117 SIGUSR2
: constant := 31; -- user defined signal 2
118 SIGPRIO
: constant := 32; -- sent to a process with its priority or
121 SIGADAABORT
: constant := SIGABRT
;
122 -- Change this if you want to use another signal for task abort.
123 -- SIGTERM might be a good one.
125 type Signal_Set
is array (Natural range <>) of Signal
;
127 Unmasked
: constant Signal_Set
:=
128 (SIGTRAP
, SIGTTIN
, SIGTTOU
, SIGTSTP
, SIGPROF
);
129 Reserved
: constant Signal_Set
:= (SIGABRT
, SIGKILL
, SIGSTOP
, SIGPRIO
);
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 SIG_BLOCK
: constant := 0;
157 SIG_UNBLOCK
: constant := 1;
158 SIG_SETMASK
: constant := 2;
160 SIG_DFL
: constant := 0;
161 SIG_IGN
: constant := 1;
165 act
: struct_sigaction_ptr
;
166 oact
: struct_sigaction_ptr
) return int
;
167 pragma Import
(C
, sigaction
, "sigaction");
173 Time_Slice_Supported
: constant Boolean := True;
174 -- Indicates wether time slicing is supported
176 type timespec
is private;
178 type clockid_t
is private;
180 CLOCK_REALTIME
: constant clockid_t
;
182 function clock_gettime
183 (clock_id
: clockid_t
;
184 tp
: access timespec
) return int
;
185 pragma Inline
(clock_gettime
);
186 -- LynxOS has non standard clock_gettime
188 function To_Duration
(TS
: timespec
) return Duration;
189 pragma Inline
(To_Duration
);
191 function To_Timespec
(D
: Duration) return timespec
;
192 pragma Inline
(To_Timespec
);
194 type struct_timezone
is record
195 tz_minuteswest
: int
;
198 pragma Convention
(C
, struct_timezone
);
199 type struct_timezone_ptr
is access all struct_timezone
;
201 type struct_timeval
is private;
202 -- This is needed on systems that do not have clock_gettime()
203 -- but do have gettimeofday().
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 := 16#
00200000#
;
216 SCHED_RR
: constant := 16#
00100000#
;
217 SCHED_OTHER
: constant := 16#
00400000#
;
223 type pid_t
is private;
225 function kill
(pid
: pid_t
; sig
: Signal
) return int
;
226 pragma Import
(C
, kill
, "kill");
228 function getpid
return pid_t
;
229 pragma Import
(C
, getpid
, "getpid");
235 function lwp_self
return System
.Address
;
236 -- lwp_self does not exist on this thread library, revert to pthread_self
237 -- which is the closest approximation (with getpid). This function is
238 -- needed to share 7staprop.adb across POSIX-like targets.
239 pragma Import
(C
, lwp_self
, "pthread_self");
245 type Thread_Body
is access
246 function (arg
: System
.Address
) return System
.Address
;
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 st_t
is limited private;
253 type pthread_attr_t
is limited private;
254 type pthread_mutexattr_t
is limited private;
255 type pthread_condattr_t
is limited private;
256 type pthread_key_t
is private;
258 PTHREAD_CREATE_DETACHED
: constant := 0;
264 Stack_Base_Available
: constant Boolean := False;
265 -- Indicates wether the stack base is available on this target.
267 function Get_Stack_Base
(thread
: pthread_t
) return Address
;
268 pragma Inline
(Get_Stack_Base
);
269 -- returns the stack base of the specified thread.
270 -- Only call this function when Stack_Base_Available is True.
272 function Get_Page_Size
return size_t
;
273 function Get_Page_Size
return Address
;
274 pragma Import
(C
, Get_Page_Size
, "getpagesize");
275 -- returns the size of a page, or 0 if this is not relevant on this
278 PROT_NONE
: constant := 0;
279 PROT_READ
: constant := 1;
280 PROT_WRITE
: constant := 2;
281 PROT_EXEC
: constant := 4;
282 PROT_USER
: constant := 8;
283 PROT_ALL
: constant := PROT_READ
+ PROT_WRITE
+ PROT_EXEC
+ PROT_USER
;
285 PROT_ON
: constant := PROT_READ
;
286 PROT_OFF
: constant := PROT_ALL
;
288 function mprotect
(addr
: Address
; len
: size_t
; prot
: int
) return int
;
289 pragma Import
(C
, mprotect
);
291 -------------------------
292 -- POSIX.1c Section 3 --
293 -------------------------
296 (set
: access sigset_t
;
297 sig
: access Signal
) return int
;
298 pragma Inline
(sigwait
);
299 -- LynxOS has non standard sigwait
301 function pthread_kill
(thread
: pthread_t
; sig
: Signal
) return int
;
302 pragma Import
(C
, pthread_kill
, "pthread_kill");
304 type sigset_t_ptr
is access all sigset_t
;
306 function pthread_sigmask
309 oset
: sigset_t_ptr
) return int
;
310 pragma Import
(C
, pthread_sigmask
, "sigprocmask");
312 --------------------------
313 -- POSIX.1c Section 11 --
314 --------------------------
316 function pthread_mutexattr_init
317 (attr
: access pthread_mutexattr_t
) return int
;
318 pragma Inline
(pthread_mutexattr_init
);
319 -- LynxOS has a nonstandard pthread_mutexattr_init
321 function pthread_mutexattr_destroy
322 (attr
: access pthread_mutexattr_t
) return int
;
323 pragma Inline
(pthread_mutexattr_destroy
);
324 -- Lynxos has a nonstandard pthread_mutexattr_destroy
326 function pthread_mutex_init
327 (mutex
: access pthread_mutex_t
;
328 attr
: access pthread_mutexattr_t
) return int
;
329 pragma Inline
(pthread_mutex_init
);
330 -- LynxOS has a nonstandard pthread_mutex_init
332 function pthread_mutex_destroy
(mutex
: access pthread_mutex_t
) return int
;
333 pragma Inline
(pthread_mutex_destroy
);
334 -- LynxOS has a nonstandard pthread_mutex_destroy
336 function pthread_mutex_lock
(mutex
: access pthread_mutex_t
) return int
;
337 pragma Inline
(pthread_mutex_lock
);
338 -- LynxOS has a nonstandard pthread_mutex_lock
340 function pthread_mutex_unlock
(mutex
: access pthread_mutex_t
) return int
;
341 pragma Inline
(pthread_mutex_unlock
);
342 -- LynxOS has a nonstandard pthread_mutex_unlock
344 function pthread_condattr_init
345 (attr
: access pthread_condattr_t
) return int
;
346 pragma Inline
(pthread_condattr_init
);
347 -- LynxOS has a nonstandard pthread_condattr_init
349 function pthread_condattr_destroy
350 (attr
: access pthread_condattr_t
) return int
;
351 pragma Inline
(pthread_condattr_destroy
);
352 -- LynxOS has a nonstandard pthread_condattr_destroy
354 function pthread_cond_init
355 (cond
: access pthread_cond_t
;
356 attr
: access pthread_condattr_t
) return int
;
357 pragma Inline
(pthread_cond_init
);
358 -- LynxOS has a non standard pthread_cond_init
360 function pthread_cond_destroy
(cond
: access pthread_cond_t
) return int
;
361 pragma Inline
(pthread_cond_destroy
);
362 -- LynxOS has a nonstandard pthread_cond_destroy
364 function pthread_cond_signal
(cond
: access pthread_cond_t
) return int
;
365 pragma Inline
(pthread_cond_signal
);
366 -- LynxOS has a nonstandard pthread_cond_signal
368 function pthread_cond_wait
369 (cond
: access pthread_cond_t
;
370 mutex
: access pthread_mutex_t
) return int
;
371 pragma Inline
(pthread_cond_wait
);
372 -- LynxOS has a nonstandard pthread_cond_wait
374 function pthread_cond_timedwait
375 (cond
: access pthread_cond_t
;
376 mutex
: access pthread_mutex_t
;
377 reltime
: access timespec
) return int
;
378 pragma Inline
(pthread_cond_timedwait
);
379 -- LynxOS has a nonstandard pthrad_cond_timedwait
381 Relative_Timed_Wait
: constant Boolean := True;
382 -- pthread_cond_timedwait requires a relative delay time
384 --------------------------
385 -- POSIX.1c Section 13 --
386 --------------------------
388 PTHREAD_PRIO_NONE
: constant := 0;
389 PTHREAD_PRIO_INHERIT
: constant := 0;
390 PTHREAD_PRIO_PROTECT
: constant := 0;
392 type struct_sched_param
is record
393 sched_priority
: int
; -- scheduling priority
396 function pthread_setschedparam
399 param
: access struct_sched_param
) return int
;
400 pragma Inline
(pthread_setschedparam
);
401 -- LynxOS doesn't have pthread_setschedparam.
402 -- Instead, use pthread_setscheduler
404 function pthread_mutexattr_setprotocol
405 (attr
: access pthread_mutexattr_t
;
406 protocol
: int
) return int
;
407 pragma Inline
(pthread_mutexattr_setprotocol
);
408 -- LynxOS doesn't have pthread_mutexattr_setprotocol
410 function pthread_mutexattr_setprioceiling
411 (attr
: access pthread_mutexattr_t
;
412 prioceiling
: int
) return int
;
413 pragma Inline
(pthread_mutexattr_setprioceiling
);
414 -- LynxOS doesn't have pthread_mutexattr_setprioceiling
416 function pthread_attr_setscope
417 (attr
: access pthread_attr_t
;
418 contentionscope
: int
) return int
;
419 -- LynxOS doesn't have pthread_attr_setscope: all threads have system scope
420 pragma Inline
(pthread_attr_setscope
);
422 function pthread_attr_setschedpolicy
423 (attr
: access pthread_attr_t
;
424 policy
: int
) return int
;
425 pragma Import
(C
, pthread_attr_setschedpolicy
, "pthread_attr_setsched");
427 function sched_yield
return int
;
428 -- pragma Import (C, sched_yield, "sched_yield");
429 pragma Inline
(sched_yield
);
431 ---------------------------
432 -- P1003.1c - Section 16 --
433 ---------------------------
435 function pthread_attr_init
(attributes
: access pthread_attr_t
) return int
;
436 pragma Import
(C
, pthread_attr_init
, "pthread_attr_create");
438 function pthread_attr_destroy
439 (attributes
: access pthread_attr_t
) return int
;
440 pragma Import
(C
, pthread_attr_destroy
, "pthread_attr_delete");
442 function pthread_attr_setdetachstate
443 (attr
: access pthread_attr_t
;
444 detachstate
: int
) return int
;
445 pragma Inline
(pthread_attr_setdetachstate
);
446 -- LynxOS doesn't have pthread_attr_setdetachstate
448 function pthread_attr_setstacksize
449 (attr
: access pthread_attr_t
;
450 stacksize
: size_t
) return int
;
451 pragma Import
(C
, pthread_attr_setstacksize
, "pthread_attr_setstacksize");
453 function pthread_create
454 (thread
: access pthread_t
;
455 attributes
: access pthread_attr_t
;
456 start_routine
: Thread_Body
;
457 arg
: System
.Address
) return int
;
458 pragma Inline
(pthread_create
);
459 -- LynxOS has a non standard pthread_create
461 procedure pthread_exit
(status
: System
.Address
);
462 pragma Import
(C
, pthread_exit
, "pthread_exit");
464 function pthread_self
return pthread_t
;
465 pragma Import
(C
, pthread_self
, "pthread_self");
467 --------------------------
468 -- POSIX.1c Section 17 --
469 --------------------------
471 function pthread_setspecific
472 (key
: pthread_key_t
;
473 value
: System
.Address
) return int
;
474 pragma Inline
(pthread_setspecific
);
475 -- LynxOS has a non standard pthread_setspecific
477 function pthread_getspecific
(key
: pthread_key_t
) return System
.Address
;
478 pragma Inline
(pthread_getspecific
);
479 -- LynxOS has a non standard pthread_getspecific
481 type destructor_pointer
is access procedure (arg
: System
.Address
);
483 function pthread_key_create
484 (key
: access pthread_key_t
;
485 destructor
: destructor_pointer
) return int
;
486 pragma Inline
(pthread_key_create
);
487 -- LynxOS has a non standard pthread_keycreate
489 procedure pthread_init
;
490 -- This is a dummy procedure to share some GNULLI files
494 type sigbit_array
is array (1 .. 2) of long
;
495 type sigset_t
is record
496 sa_sigbits
: sigbit_array
;
498 pragma Convention
(C_Pass_By_Copy
, sigset_t
);
500 type pid_t
is new long
;
502 type time_t
is new long
;
504 type timespec
is record
508 pragma Convention
(C
, timespec
);
510 type clockid_t
is new unsigned_char
;
511 CLOCK_REALTIME
: constant clockid_t
:= 0;
513 type struct_timeval
is record
517 pragma Convention
(C
, struct_timeval
);
526 pragma Convention
(C
, st_t
);
528 type pthread_attr_t
is record
530 pthread_attr_scope
: int
; -- ignored
532 pragma Convention
(C
, pthread_attr_t
);
534 type pthread_condattr_t
is new int
;
536 type pthread_mutexattr_t
is new int
;
538 type tid_t
is new short
;
539 type pthread_t
is new tid_t
;
541 type synch_ptr
is access all pthread_mutex_t
;
542 type pthread_mutex_t
is record
548 pragma Convention
(C
, pthread_mutex_t
);
550 type pthread_cond_t
is new pthread_mutex_t
;
552 type pthread_key_t
is new int
;
554 end System
.OS_Interface
;