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 --
11 -- Copyright (C) 1997-2001 Free Software Foundation, Inc. --
13 -- GNARL is free software; you can redistribute it and/or modify it under --
14 -- terms of the GNU General Public License as published by the Free Soft- --
15 -- ware Foundation; either version 2, or (at your option) any later ver- --
16 -- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
17 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
18 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
19 -- for more details. You should have received a copy of the GNU General --
20 -- Public License distributed with GNARL; see file COPYING. If not, write --
21 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
22 -- MA 02111-1307, USA. --
24 -- As a special exception, if other files instantiate generics from this --
25 -- unit, or you link this unit with other files to produce an executable, --
26 -- this unit does not by itself cause the resulting executable to be --
27 -- covered by the GNU General Public License. This exception does not --
28 -- however invalidate any other reasons why the executable file might be --
29 -- covered by the GNU Public License. --
31 -- GNARL was developed by the GNARL team at Florida State University. --
32 -- Extensive contributions were provided by Ada Core Technologies Inc. --
34 ------------------------------------------------------------------------------
36 -- This is a AIX (Native THREADS) version of this package.
38 -- This package encapsulates all direct interfaces to OS services
39 -- that are needed by children of System.
41 -- PLEASE DO NOT add any with-clauses to this package
42 -- or remove the pragma Elaborate_Body.
43 -- It is designed to be a bottom-level (leaf) package.
46 package System
.OS_Interface
is
49 pragma Linker_Options
("-lpthreads");
50 pragma Linker_Options
("-lc_r");
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 ETIMEDOUT
: constant := 78;
79 Max_Interrupt
: constant := 63;
80 type Signal
is new int
range 0 .. Max_Interrupt
;
81 for Signal
'Size use int
'Size;
83 SIGHUP
: constant := 1; -- hangup
84 SIGINT
: constant := 2; -- interrupt (rubout)
85 SIGQUIT
: constant := 3; -- quit (ASCD FS)
86 SIGILL
: constant := 4; -- illegal instruction (not reset)
87 SIGTRAP
: constant := 5; -- trace trap (not reset)
88 SIGIOT
: constant := 6; -- IOT instruction
89 SIGABRT
: constant := 6; -- used by abort, replace SIGIOT in the future
90 SIGEMT
: constant := 7; -- EMT instruction
91 SIGFPE
: constant := 8; -- floating point exception
92 SIGKILL
: constant := 9; -- kill (cannot be caught or ignored)
93 SIGBUS
: constant := 10; -- bus error
94 SIGSEGV
: constant := 11; -- segmentation violation
95 SIGSYS
: constant := 12; -- bad argument to system call
96 SIGPIPE
: constant := 13; -- write on a pipe with no one to read it
97 SIGALRM
: constant := 14; -- alarm clock
98 SIGTERM
: constant := 15; -- software termination signal from kill
99 SIGUSR1
: constant := 30; -- user defined signal 1
100 SIGUSR2
: constant := 31; -- user defined signal 2
101 SIGCLD
: constant := 20; -- alias for SIGCHLD
102 SIGCHLD
: constant := 20; -- child status change
103 SIGPWR
: constant := 29; -- power-fail restart
104 SIGWINCH
: constant := 28; -- window size change
105 SIGURG
: constant := 16; -- urgent condition on IO channel
106 SIGPOLL
: constant := 23; -- pollable event occurred
107 SIGIO
: constant := 23; -- I/O possible (Solaris SIGPOLL alias)
108 SIGSTOP
: constant := 17; -- stop (cannot be caught or ignored)
109 SIGTSTP
: constant := 18; -- user stop requested from tty
110 SIGCONT
: constant := 19; -- stopped process has been continued
111 SIGTTIN
: constant := 21; -- background tty read attempted
112 SIGTTOU
: constant := 22; -- background tty write attempted
113 SIGVTALRM
: constant := 34; -- virtual timer expired
114 SIGPROF
: constant := 32; -- profiling timer expired
115 SIGXCPU
: constant := 24; -- CPU time limit exceeded
116 SIGXFSZ
: constant := 25; -- filesize limit exceeded
117 SIGWAITING
: constant := 39; -- m:n scheduling
119 -- the following signals are AIX specific
120 SIGMSG
: constant := 27; -- input data is in the ring buffer
121 SIGDANGER
: constant := 33; -- system crash imminent
122 SIGMIGRATE
: constant := 35; -- migrate process
123 SIGPRE
: constant := 36; -- programming exception
124 SIGVIRT
: constant := 37; -- AIX virtual time alarm
125 SIGALRM1
: constant := 38; -- m:n condition variables
126 SIGKAP
: constant := 60; -- keep alive poll from native keyboard
127 SIGGRANT
: constant := SIGKAP
; -- monitor mode granted
128 SIGRETRACT
: constant := 61; -- monitor mode should be relinguished
129 SIGSOUND
: constant := 62; -- sound control has completed
130 SIGSAK
: constant := 63; -- secure attention key
132 SIGADAABORT
: constant := SIGTERM
;
133 -- Note: on other targets, we usually use SIGABRT, but on AiX, it
134 -- appears that SIGABRT can't be used in sigwait(), so we use SIGTERM.
136 type Signal_Set
is array (Natural range <>) of Signal
;
138 Unmasked
: constant Signal_Set
:=
139 (SIGTRAP
, SIGTTIN
, SIGTTOU
, SIGTSTP
, SIGPROF
);
140 Reserved
: constant Signal_Set
:= (SIGABRT
, SIGKILL
, SIGSTOP
);
142 type sigset_t
is private;
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 struct_sigaction
is record
160 sa_handler
: System
.Address
;
164 pragma Convention
(C
, struct_sigaction
);
165 type struct_sigaction_ptr
is access all struct_sigaction
;
168 SIG_BLOCK
: constant := 0;
169 SIG_UNBLOCK
: constant := 1;
170 SIG_SETMASK
: constant := 2;
172 SIG_DFL
: constant := 0;
173 SIG_IGN
: constant := 1;
177 act
: struct_sigaction_ptr
;
178 oact
: struct_sigaction_ptr
) return int
;
179 pragma Import
(C
, sigaction
, "sigaction");
185 Time_Slice_Supported
: constant Boolean := False;
186 -- Indicates wether time slicing is supported
188 type timespec
is private;
190 type clockid_t
is private;
192 CLOCK_REALTIME
: constant clockid_t
;
194 function clock_gettime
195 (clock_id
: clockid_t
;
196 tp
: access timespec
) return int
;
197 -- AiX threads don't have clock_gettime
198 -- We instead use gettimeofday()
200 function To_Duration
(TS
: timespec
) return Duration;
201 pragma Inline
(To_Duration
);
203 function To_Timespec
(D
: Duration) return timespec
;
204 pragma Inline
(To_Timespec
);
206 type struct_timezone
is record
207 tz_minuteswest
: int
;
210 pragma Convention
(C
, struct_timezone
);
211 type struct_timezone_ptr
is access all struct_timezone
;
213 type struct_timeval
is private;
214 -- This is needed on systems that do not have clock_gettime()
215 -- but do have gettimeofday().
217 function To_Duration
(TV
: struct_timeval
) return Duration;
218 pragma Inline
(To_Duration
);
220 function To_Timeval
(D
: Duration) return struct_timeval
;
221 pragma Inline
(To_Timeval
);
223 -------------------------
224 -- Priority Scheduling --
225 -------------------------
227 SCHED_FIFO
: constant := 1;
228 SCHED_RR
: constant := 2;
229 SCHED_OTHER
: constant := 0;
235 type pid_t
is private;
237 function kill
(pid
: pid_t
; sig
: Signal
) return int
;
238 pragma Import
(C
, kill
, "kill");
240 function getpid
return pid_t
;
241 pragma Import
(C
, getpid
, "getpid");
247 function lwp_self
return System
.Address
;
248 pragma Import
(C
, lwp_self
, "thread_self");
254 type Thread_Body
is access
255 function (arg
: System
.Address
) return System
.Address
;
256 type pthread_t
is private;
257 subtype Thread_Id
is pthread_t
;
259 type pthread_mutex_t
is limited private;
260 type pthread_cond_t
is limited private;
261 type pthread_attr_t
is limited private;
262 type pthread_mutexattr_t
is limited private;
263 type pthread_condattr_t
is limited private;
264 type pthread_key_t
is private;
266 PTHREAD_CREATE_DETACHED
: constant := 1;
272 Stack_Base_Available
: constant Boolean := False;
273 -- Indicates wether the stack base is available on this target.
275 function Get_Stack_Base
(thread
: pthread_t
) return Address
;
276 pragma Inline
(Get_Stack_Base
);
277 -- returns the stack base of the specified thread.
278 -- Only call this function when Stack_Base_Available is True.
280 function Get_Page_Size
return size_t
;
281 function Get_Page_Size
return Address
;
282 pragma Import
(C
, Get_Page_Size
, "getpagesize");
283 -- returns the size of a page, or 0 if this is not relevant on this
286 PROT_NONE
: constant := 0;
287 PROT_READ
: constant := 1;
288 PROT_WRITE
: constant := 2;
289 PROT_EXEC
: constant := 4;
290 PROT_ALL
: constant := PROT_READ
+ PROT_WRITE
+ PROT_EXEC
;
292 PROT_ON
: constant := PROT_READ
;
293 PROT_OFF
: constant := PROT_ALL
;
295 function mprotect
(addr
: Address
; len
: size_t
; prot
: int
) return int
;
296 pragma Import
(C
, mprotect
);
298 ---------------------------------------
299 -- Nonstandard Thread Initialization --
300 ---------------------------------------
302 -- Though not documented, pthread_init *must* be called before any other
305 procedure pthread_init
;
306 pragma Import
(C
, pthread_init
, "pthread_init");
308 -------------------------
309 -- POSIX.1c Section 3 --
310 -------------------------
313 (set
: access sigset_t
;
314 sig
: access Signal
) return int
;
315 pragma Import
(C
, sigwait
, "sigwait");
317 function pthread_kill
319 sig
: Signal
) return int
;
320 pragma Import
(C
, pthread_kill
, "pthread_kill");
322 type sigset_t_ptr
is access all sigset_t
;
324 function pthread_sigmask
327 oset
: sigset_t_ptr
) return int
;
328 pragma Import
(C
, pthread_sigmask
, "sigthreadmask");
330 --------------------------
331 -- POSIX.1c Section 11 --
332 --------------------------
334 function pthread_mutexattr_init
335 (attr
: access pthread_mutexattr_t
) return int
;
336 pragma Import
(C
, pthread_mutexattr_init
, "pthread_mutexattr_init");
338 function pthread_mutexattr_destroy
339 (attr
: access pthread_mutexattr_t
) return int
;
340 pragma Import
(C
, pthread_mutexattr_destroy
, "pthread_mutexattr_destroy");
342 function pthread_mutex_init
343 (mutex
: access pthread_mutex_t
;
344 attr
: access pthread_mutexattr_t
) return int
;
345 pragma Import
(C
, pthread_mutex_init
, "pthread_mutex_init");
347 function pthread_mutex_destroy
(mutex
: access pthread_mutex_t
) return int
;
348 pragma Import
(C
, pthread_mutex_destroy
, "pthread_mutex_destroy");
350 function pthread_mutex_lock
(mutex
: access pthread_mutex_t
) return int
;
351 pragma Import
(C
, pthread_mutex_lock
, "pthread_mutex_lock");
353 function pthread_mutex_unlock
(mutex
: access pthread_mutex_t
) return int
;
354 pragma Import
(C
, pthread_mutex_unlock
, "pthread_mutex_unlock");
356 function pthread_condattr_init
357 (attr
: access pthread_condattr_t
) return int
;
358 pragma Import
(C
, pthread_condattr_init
, "pthread_condattr_init");
360 function pthread_condattr_destroy
361 (attr
: access pthread_condattr_t
) return int
;
362 pragma Import
(C
, pthread_condattr_destroy
, "pthread_condattr_destroy");
364 function pthread_cond_init
365 (cond
: access pthread_cond_t
;
366 attr
: access pthread_condattr_t
) return int
;
367 pragma Import
(C
, pthread_cond_init
, "pthread_cond_init");
369 function pthread_cond_destroy
(cond
: access pthread_cond_t
) return int
;
370 pragma Import
(C
, pthread_cond_destroy
, "pthread_cond_destroy");
372 function pthread_cond_signal
(cond
: access pthread_cond_t
) return int
;
373 pragma Import
(C
, pthread_cond_signal
, "pthread_cond_signal");
375 function pthread_cond_wait
376 (cond
: access pthread_cond_t
;
377 mutex
: access pthread_mutex_t
) return int
;
378 pragma Import
(C
, pthread_cond_wait
, "pthread_cond_wait");
380 function pthread_cond_timedwait
381 (cond
: access pthread_cond_t
;
382 mutex
: access pthread_mutex_t
;
383 abstime
: access timespec
) return int
;
384 pragma Import
(C
, pthread_cond_timedwait
, "pthread_cond_timedwait");
386 Relative_Timed_Wait
: constant Boolean := False;
387 -- pthread_cond_timedwait requires an absolute delay time
389 ----------------------------
390 -- POSIX.1c Section 13 --
391 ----------------------------
393 PTHREAD_PRIO_NONE
: constant := 0;
394 PTHREAD_PRIO_PROTECT
: constant := 0;
395 PTHREAD_PRIO_INHERIT
: constant := 0;
397 function pthread_mutexattr_setprotocol
398 (attr
: access pthread_mutexattr_t
;
399 protocol
: int
) return int
;
400 pragma Import
(C
, pthread_mutexattr_setprotocol
);
402 function pthread_mutexattr_setprioceiling
403 (attr
: access pthread_mutexattr_t
;
404 prioceiling
: int
) return int
;
405 pragma Import
(C
, pthread_mutexattr_setprioceiling
);
407 type Array_5_Int
is array (0 .. 5) of int
;
408 type struct_sched_param
is record
409 sched_priority
: int
;
411 sched_reserved
: Array_5_Int
;
414 function pthread_setschedparam
417 param
: access struct_sched_param
) return int
;
418 pragma Import
(C
, pthread_setschedparam
, "pthread_setschedparam");
420 function pthread_attr_setscope
421 (attr
: access pthread_attr_t
;
422 contentionscope
: int
) return int
;
423 pragma Import
(C
, pthread_attr_setscope
, "pthread_attr_setscope");
425 function pthread_attr_setinheritsched
426 (attr
: access pthread_attr_t
;
427 inheritsched
: int
) return int
;
428 pragma Import
(C
, pthread_attr_setinheritsched
);
430 function pthread_attr_setschedpolicy
431 (attr
: access pthread_attr_t
;
432 policy
: int
) return int
;
433 pragma Import
(C
, pthread_attr_setschedpolicy
);
435 function pthread_attr_setschedparam
436 (attr
: access pthread_attr_t
;
437 sched_param
: int
) return int
;
438 pragma Import
(C
, pthread_attr_setschedparam
);
440 function sched_yield
return int
;
441 -- AiX have a nonstandard sched_yield.
443 ---------------------------
444 -- P1003.1c - Section 16 --
445 ---------------------------
447 function pthread_attr_init
(attributes
: access pthread_attr_t
) return int
;
448 pragma Import
(C
, pthread_attr_init
, "pthread_attr_init");
450 function pthread_attr_destroy
451 (attributes
: access pthread_attr_t
) return int
;
452 pragma Import
(C
, pthread_attr_destroy
, "pthread_attr_destroy");
454 function pthread_attr_setdetachstate
455 (attr
: access pthread_attr_t
;
456 detachstate
: int
) return int
;
457 pragma Import
(C
, pthread_attr_setdetachstate
);
459 function pthread_attr_setstacksize
460 (attr
: access pthread_attr_t
;
461 stacksize
: size_t
) return int
;
462 pragma Import
(C
, pthread_attr_setstacksize
);
464 function pthread_create
465 (thread
: access pthread_t
;
466 attributes
: access pthread_attr_t
;
467 start_routine
: Thread_Body
;
468 arg
: System
.Address
)
470 pragma Import
(C
, pthread_create
, "pthread_create");
472 procedure pthread_exit
(status
: System
.Address
);
473 pragma Import
(C
, pthread_exit
, "pthread_exit");
475 function pthread_self
return pthread_t
;
476 pragma Import
(C
, pthread_self
, "pthread_self");
478 --------------------------
479 -- POSIX.1c Section 17 --
480 --------------------------
482 function pthread_setspecific
483 (key
: pthread_key_t
;
484 value
: System
.Address
) return int
;
485 pragma Import
(C
, pthread_setspecific
, "pthread_setspecific");
487 function pthread_getspecific
(key
: pthread_key_t
) return System
.Address
;
488 pragma Import
(C
, pthread_getspecific
, "pthread_getspecific");
490 type destructor_pointer
is access
491 procedure (arg
: System
.Address
);
493 function pthread_key_create
494 (key
: access pthread_key_t
;
495 destructor
: destructor_pointer
) return int
;
496 pragma Import
(C
, pthread_key_create
, "pthread_key_create");
500 type sigset_t
is record
501 losigs
: unsigned_long
;
502 hisigs
: unsigned_long
;
504 pragma Convention
(C_Pass_By_Copy
, sigset_t
);
506 type pid_t
is new int
;
508 type time_t
is new long
;
510 type timespec
is record
514 pragma Convention
(C
, timespec
);
516 type clockid_t
is new int
;
517 CLOCK_REALTIME
: constant clockid_t
:= 0;
519 type struct_timeval
is record
523 pragma Convention
(C
, struct_timeval
);
525 type pthread_attr_t
is new System
.Address
;
526 pragma Convention
(C
, pthread_attr_t
);
527 -- typedef struct __pt_attr *pthread_attr_t;
529 type pthread_condattr_t
is new System
.Address
;
530 pragma Convention
(C
, pthread_condattr_t
);
531 -- typedef struct __pt_attr *pthread_condattr_t;
533 type pthread_mutexattr_t
is new System
.Address
;
534 pragma Convention
(C
, pthread_mutexattr_t
);
535 -- typedef struct __pt_attr *pthread_mutexattr_t;
537 type pthread_t
is new System
.Address
;
538 pragma Convention
(C
, pthread_t
);
539 -- typedef void *pthread_t;
542 type ptq_queue_ptr
is access all ptq_queue
;
544 type ptq_queue
is record
545 ptq_next
: ptq_queue_ptr
;
546 ptq_prev
: ptq_queue_ptr
;
549 type Array_3_Int
is array (0 .. 3) of int
;
550 type pthread_mutex_t
is record
556 ptmtx_owner
: pthread_t
;
558 attr
: pthread_attr_t
;
561 reserved
: Array_3_Int
;
563 pragma Convention
(C
, pthread_mutex_t
);
564 type pthread_mutex_t_ptr
is access pthread_mutex_t
;
566 type pthread_cond_t
is record
570 ptcv_waiters
: ptq_queue
;
572 attr
: pthread_attr_t
;
573 mutex
: pthread_mutex_t_ptr
;
577 pragma Convention
(C
, pthread_cond_t
);
579 type pthread_key_t
is new unsigned
;
581 end System
.OS_Interface
;