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) 1997-2002, 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. It is --
31 -- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
32 -- State University (http://www.gnat.com). --
34 ------------------------------------------------------------------------------
36 -- This is a Solaris (FSU THREADS) version of this package.
38 -- This package includes 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
("-lgthreads");
50 pragma Linker_Options
("-lmalloc");
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 := 145;
79 Max_Interrupt
: constant := 45;
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 := 16; -- user defined signal 1
100 SIGUSR2
: constant := 17; -- user defined signal 2
101 SIGCLD
: constant := 18; -- alias for SIGCHLD
102 SIGCHLD
: constant := 18; -- child status change
103 SIGPWR
: constant := 19; -- power-fail restart
104 SIGWINCH
: constant := 20; -- window size change
105 SIGURG
: constant := 21; -- urgent condition on IO channel
106 SIGPOLL
: constant := 22; -- pollable event occurred
107 SIGIO
: constant := 22; -- I/O possible (Solaris SIGPOLL alias)
108 SIGSTOP
: constant := 23; -- stop (cannot be caught or ignored)
109 SIGTSTP
: constant := 24; -- user stop requested from tty
110 SIGCONT
: constant := 25; -- stopped process has been continued
111 SIGTTIN
: constant := 26; -- background tty read attempted
112 SIGTTOU
: constant := 27; -- background tty write attempted
113 SIGVTALRM
: constant := 28; -- virtual timer expired
114 SIGPROF
: constant := 29; -- profiling timer expired
115 SIGXCPU
: constant := 30; -- CPU time limit exceeded
116 SIGXFSZ
: constant := 31; -- filesize limit exceeded
117 SIGWAITING
: constant := 32; -- process's lwps blocked (Solaris)
118 SIGLWP
: constant := 33; -- used by thread library (Solaris)
119 SIGFREEZE
: constant := 34; -- used by CPR (Solaris)
120 SIGTHAW
: constant := 35; -- used by CPR (Solaris)
121 SIGCANCEL
: constant := 36; -- used for thread cancel (Solaris)
122 SIGRTMIN
: constant := 38; -- first (highest-priority) realtime signal
123 SIGRTMAX
: constant := 45; -- last (lowest-priority) realtime signal
125 type Signal_Set
is array (Natural range <>) of Signal
;
127 Unmasked
: constant Signal_Set
:=
128 (SIGTRAP
, SIGLWP
, SIGTTIN
, SIGTTOU
, SIGTSTP
, SIGPROF
);
130 Reserved
: constant Signal_Set
:=
131 (SIGKILL
, SIGSTOP
, SIGALRM
, SIGVTALRM
, SIGWAITING
, SIGRTMAX
);
133 type sigset_t
is private;
135 function sigaddset
(set
: access sigset_t
; sig
: Signal
) return int
;
136 pragma Import
(C
, sigaddset
, "sigaddset");
138 function sigdelset
(set
: access sigset_t
; sig
: Signal
) return int
;
139 pragma Import
(C
, sigdelset
, "sigdelset");
141 function sigfillset
(set
: access sigset_t
) return int
;
142 pragma Import
(C
, sigfillset
, "sigfillset");
144 function sigismember
(set
: access sigset_t
; sig
: Signal
) return int
;
145 pragma Import
(C
, sigismember
, "sigismember");
147 function sigemptyset
(set
: access sigset_t
) return int
;
148 pragma Import
(C
, sigemptyset
, "sigemptyset");
150 type union_type_3
is new String (1 .. 116);
151 type siginfo_t
is record
155 X_data
: union_type_3
;
157 pragma Convention
(C
, siginfo_t
);
159 -- The types mcontext_t and gregset_t are part of the ucontext_t
160 -- information, which is specific to Solaris2.4 for SPARC
161 -- The ucontext_t info seems to be used by the handler
162 -- for SIGSEGV to decide whether it is a Storage_Error (stack overflow) or
163 -- a Constraint_Error (bad pointer). The original code that did this
164 -- is suspect, so it is not clear whether we really need this part of
165 -- the signal context information, or perhaps something else.
166 -- More analysis is needed, after which these declarations may need to
169 EMT_TAGOVF
: constant := 1; -- tag overflow
170 FPE_INTDIV
: constant := 1; -- integer divide by zero
171 FPE_INTOVF
: constant := 2; -- integer overflow
172 FPE_FLTDIV
: constant := 3; -- floating point divide by zero
173 FPE_FLTOVF
: constant := 4; -- floating point overflow
174 FPE_FLTUND
: constant := 5; -- floating point underflow
175 FPE_FLTRES
: constant := 6; -- floating point inexact result
176 FPE_FLTINV
: constant := 7; -- invalid floating point operation
177 FPE_FLTSUB
: constant := 8; -- subscript out of range
179 SEGV_MAPERR
: constant := 1; -- address not mapped to object
180 SEGV_ACCERR
: constant := 2; -- invalid permissions
182 BUS_ADRALN
: constant := 1; -- invalid address alignment
183 BUS_ADRERR
: constant := 2; -- non-existent physical address
184 BUS_OBJERR
: constant := 3; -- object specific hardware error
186 ILL_ILLOPC
: constant := 1; -- illegal opcode
187 ILL_ILLOPN
: constant := 2; -- illegal operand
188 ILL_ILLADR
: constant := 3; -- illegal addressing mode
189 ILL_ILLTRP
: constant := 4; -- illegal trap
190 ILL_PRVOPC
: constant := 5; -- privileged opcode
191 ILL_PRVREG
: constant := 6; -- privileged register
192 ILL_COPROC
: constant := 7; -- co-processor
193 ILL_BADSTK
: constant := 8; -- bad stack
195 type greg_t
is new int
;
197 type gregset_t
is array (Integer range 0 .. 18) of greg_t
;
199 REG_O0
: constant := 11;
200 -- index of saved register O0 in ucontext.uc_mcontext.gregs array
202 type union_type_2
is new String (1 .. 128);
203 type record_type_1
is record
204 fpu_fr
: union_type_2
;
205 fpu_q
: System
.Address
;
207 fpu_qcnt
: unsigned_char
;
208 fpu_q_entrysize
: unsigned_char
;
209 fpu_en
: unsigned_char
;
211 pragma Convention
(C
, record_type_1
);
212 type array_type_7
is array (Integer range 0 .. 20) of long
;
213 type mcontext_t
is record
215 gwins
: System
.Address
;
216 fpregs
: record_type_1
;
217 filler
: array_type_7
;
219 pragma Convention
(C
, mcontext_t
);
221 type record_type_2
is record
222 ss_sp
: System
.Address
;
226 pragma Convention
(C
, record_type_2
);
227 type array_type_8
is array (Integer range 0 .. 22) of long
;
228 type ucontext_t
is record
229 uc_flags
: unsigned_long
;
230 uc_link
: System
.Address
;
231 uc_sigmask
: sigset_t
;
232 uc_stack
: record_type_2
;
233 uc_mcontext
: mcontext_t
;
234 uc_filler
: array_type_8
;
236 pragma Convention
(C
, ucontext_t
);
238 type Signal_Handler
is access procedure
240 info
: access siginfo_t
;
241 context
: access ucontext_t
);
243 type union_type_1
is new plain_char
;
244 type array_type_2
is array (Integer range 0 .. 1) of int
;
245 type struct_sigaction
is record
247 sa_handler
: System
.Address
;
249 sa_resv
: array_type_2
;
251 pragma Convention
(C
, struct_sigaction
);
252 type struct_sigaction_ptr
is access all struct_sigaction
;
254 SIG_BLOCK
: constant := 1;
255 SIG_UNBLOCK
: constant := 2;
256 SIG_SETMASK
: constant := 3;
258 SIG_DFL
: constant := 0;
259 SIG_IGN
: constant := 1;
263 act
: struct_sigaction_ptr
;
264 oact
: struct_sigaction_ptr
) return int
;
265 pragma Import
(C
, sigaction
, "sigaction");
271 Time_Slice_Supported
: constant Boolean := False;
272 -- Indicates wether time slicing is supported (i.e FSU threads have been
273 -- compiled with DEF_RR)
275 type timespec
is private;
277 type clockid_t
is private;
279 CLOCK_REALTIME
: constant clockid_t
;
281 function clock_gettime
282 (clock_id
: clockid_t
;
283 tp
: access timespec
) return int
;
284 pragma Import
(C
, clock_gettime
, "clock_gettime");
286 function To_Duration
(TS
: timespec
) return Duration;
287 pragma Inline
(To_Duration
);
289 function To_Timespec
(D
: Duration) return timespec
;
290 pragma Inline
(To_Timespec
);
292 type struct_timeval
is private;
294 function To_Duration
(TV
: struct_timeval
) return Duration;
295 pragma Inline
(To_Duration
);
297 function To_Timeval
(D
: Duration) return struct_timeval
;
298 pragma Inline
(To_Timeval
);
300 -------------------------
301 -- Priority Scheduling --
302 -------------------------
304 SCHED_FIFO
: constant := 0;
305 SCHED_RR
: constant := 1;
306 SCHED_OTHER
: constant := 2;
312 type pid_t
is private;
314 function kill
(pid
: pid_t
; sig
: Signal
) return int
;
315 pragma Import
(C
, kill
, "kill");
317 function getpid
return pid_t
;
318 pragma Import
(C
, getpid
, "getpid");
324 function lwp_self
return System
.Address
;
325 -- lwp_self does not exist on this thread library, revert to pthread_self
326 -- which is the closest approximation (with getpid). This function is
327 -- needed to share 7staprop.adb across POSIX-like targets.
328 pragma Import
(C
, lwp_self
, "pthread_self");
334 type Thread_Body
is access
335 function (arg
: System
.Address
) return System
.Address
;
336 type pthread_t
is private;
337 subtype Thread_Id
is pthread_t
;
339 type pthread_mutex_t
is limited private;
340 type pthread_cond_t
is limited private;
341 type pthread_attr_t
is limited private;
342 type pthread_mutexattr_t
is limited private;
343 type pthread_condattr_t
is limited private;
344 type pthread_key_t
is private;
346 PTHREAD_CREATE_DETACHED
: constant := 1;
352 Stack_Base_Available
: constant Boolean := False;
353 -- Indicates wether the stack base is available on this target.
354 -- This allows us to share s-osinte.adb between all the FSU run time.
355 -- Note that this value can only be true if pthread_t has a complete
356 -- definition that corresponds exactly to the C header files.
358 function Get_Stack_Base
(thread
: pthread_t
) return Address
;
359 pragma Inline
(Get_Stack_Base
);
360 -- returns the stack base of the specified thread.
361 -- Only call this function when Stack_Base_Available is True.
363 function Get_Page_Size
return size_t
;
364 function Get_Page_Size
return Address
;
365 pragma Import
(C
, Get_Page_Size
, "getpagesize");
366 -- returns the size of a page, or 0 if this is not relevant on this
369 PROT_NONE
: constant := 0;
370 PROT_READ
: constant := 1;
371 PROT_WRITE
: constant := 2;
372 PROT_EXEC
: constant := 4;
373 PROT_ALL
: constant := PROT_READ
+ PROT_WRITE
+ PROT_EXEC
;
375 PROT_ON
: constant := PROT_NONE
;
376 PROT_OFF
: constant := PROT_ALL
;
378 function mprotect
(addr
: Address
; len
: size_t
; prot
: int
) return int
;
379 pragma Import
(C
, mprotect
);
381 ---------------------------------------
382 -- Nonstandard Thread Initialization --
383 ---------------------------------------
385 procedure pthread_init
;
386 -- FSU_THREADS requires pthread_init, which is nonstandard
387 -- and this should be invoked during the elaboration of s-taprop.adb
388 pragma Import
(C
, pthread_init
, "pthread_init");
390 -------------------------
391 -- POSIX.1c Section 3 --
392 -------------------------
394 function sigwait
(set
: access sigset_t
; sig
: access Signal
) return int
;
395 -- FSU_THREADS has a nonstandard sigwait
397 function pthread_kill
(thread
: pthread_t
; sig
: Signal
) return int
;
398 pragma Import
(C
, pthread_kill
, "pthread_kill");
400 type sigset_t_ptr
is access all sigset_t
;
402 function pthread_sigmask
405 oset
: sigset_t_ptr
) return int
;
406 pragma Import
(C
, pthread_sigmask
, "sigprocmask");
408 --------------------------
409 -- POSIX.1c Section 11 --
410 --------------------------
412 function pthread_mutexattr_init
413 (attr
: access pthread_mutexattr_t
) return int
;
414 pragma Import
(C
, pthread_mutexattr_init
, "pthread_mutexattr_init");
416 function pthread_mutexattr_destroy
417 (attr
: access pthread_mutexattr_t
) return int
;
418 pragma Import
(C
, pthread_mutexattr_destroy
, "pthread_mutexattr_destroy");
420 function pthread_mutex_init
421 (mutex
: access pthread_mutex_t
;
422 attr
: access pthread_mutexattr_t
) return int
;
423 pragma Import
(C
, pthread_mutex_init
, "pthread_mutex_init");
425 function pthread_mutex_destroy
(mutex
: access pthread_mutex_t
) return int
;
426 pragma Import
(C
, pthread_mutex_destroy
, "pthread_mutex_destroy");
428 function pthread_mutex_lock
(mutex
: access pthread_mutex_t
) return int
;
429 -- FSU_THREADS has nonstandard pthread_mutex_lock
431 function pthread_mutex_unlock
(mutex
: access pthread_mutex_t
) return int
;
432 -- FSU_THREADS has nonstandard pthread_mutex_lock
434 function pthread_condattr_init
435 (attr
: access pthread_condattr_t
) return int
;
436 pragma Import
(C
, pthread_condattr_init
, "pthread_condattr_init");
438 function pthread_condattr_destroy
439 (attr
: access pthread_condattr_t
) return int
;
440 pragma Import
(C
, pthread_condattr_destroy
, "pthread_condattr_destroy");
442 function pthread_cond_init
443 (cond
: access pthread_cond_t
;
444 attr
: access pthread_condattr_t
) return int
;
445 pragma Import
(C
, pthread_cond_init
, "pthread_cond_init");
447 function pthread_cond_destroy
(cond
: access pthread_cond_t
) return int
;
448 pragma Import
(C
, pthread_cond_destroy
, "pthread_cond_destroy");
450 function pthread_cond_signal
(cond
: access pthread_cond_t
) return int
;
451 pragma Import
(C
, pthread_cond_signal
, "pthread_cond_signal");
453 function pthread_cond_wait
454 (cond
: access pthread_cond_t
;
455 mutex
: access pthread_mutex_t
) return int
;
456 -- FSU_THREADS has a nonstandard pthread_cond_wait
458 function pthread_cond_timedwait
459 (cond
: access pthread_cond_t
;
460 mutex
: access pthread_mutex_t
;
461 abstime
: access timespec
) return int
;
462 -- FSU_THREADS has a nonstandard pthread_cond_timedwait
464 Relative_Timed_Wait
: constant Boolean := False;
465 -- pthread_cond_timedwait requires an absolute delay time
467 --------------------------
468 -- POSIX.1c Section 13 --
469 --------------------------
471 PTHREAD_PRIO_NONE
: constant := 0;
472 PTHREAD_PRIO_PROTECT
: constant := 2;
473 PTHREAD_PRIO_INHERIT
: constant := 1;
475 function pthread_mutexattr_setprotocol
476 (attr
: access pthread_mutexattr_t
;
477 protocol
: int
) return int
;
478 pragma Import
(C
, pthread_mutexattr_setprotocol
);
480 function pthread_mutexattr_setprioceiling
481 (attr
: access pthread_mutexattr_t
;
482 prioceiling
: int
) return int
;
484 (C
, pthread_mutexattr_setprioceiling
,
485 "pthread_mutexattr_setprio_ceiling");
487 type struct_sched_param
is record
488 sched_priority
: int
; -- scheduling priority
491 function pthread_setschedparam
494 param
: access struct_sched_param
) return int
;
495 -- FSU_THREADS does not have pthread_setschedparam
497 function pthread_attr_setscope
498 (attr
: access pthread_attr_t
;
499 contentionscope
: int
) return int
;
500 pragma Import
(C
, pthread_attr_setscope
, "pthread_attr_setscope");
502 function pthread_attr_setinheritsched
503 (attr
: access pthread_attr_t
;
504 inheritsched
: int
) return int
;
505 pragma Import
(C
, pthread_attr_setinheritsched
);
507 function pthread_attr_setschedpolicy
508 (attr
: access pthread_attr_t
;
509 policy
: int
) return int
;
510 pragma Import
(C
, pthread_attr_setschedpolicy
, "pthread_attr_setsched");
512 function sched_yield
return int
;
513 -- FSU_THREADS does not have sched_yield;
515 ---------------------------
516 -- P1003.1c - Section 16 --
517 ---------------------------
519 function pthread_attr_init
(attributes
: access pthread_attr_t
) return int
;
520 pragma Import
(C
, pthread_attr_init
, "pthread_attr_init");
522 function pthread_attr_destroy
523 (attributes
: access pthread_attr_t
) return int
;
524 pragma Import
(C
, pthread_attr_destroy
, "pthread_attr_destroy");
526 function pthread_attr_setdetachstate
527 (attr
: access pthread_attr_t
;
528 detachstate
: int
) return int
;
529 -- FSU_THREADS has a nonstandard pthread_attr_setdetachstate
531 function pthread_attr_setstacksize
532 (attr
: access pthread_attr_t
;
533 stacksize
: size_t
) return int
;
534 pragma Import
(C
, pthread_attr_setstacksize
);
536 function pthread_create
537 (thread
: access pthread_t
;
538 attributes
: access pthread_attr_t
;
539 start_routine
: Thread_Body
;
540 arg
: System
.Address
) return int
;
541 pragma Import
(C
, pthread_create
, "pthread_create");
543 procedure pthread_exit
(status
: System
.Address
);
544 pragma Import
(C
, pthread_exit
, "pthread_exit");
546 function pthread_self
return pthread_t
;
547 pragma Import
(C
, pthread_self
, "pthread_self");
549 --------------------------
550 -- POSIX.1c Section 17 --
551 --------------------------
553 function pthread_setspecific
554 (key
: pthread_key_t
;
555 value
: System
.Address
) return int
;
556 pragma Import
(C
, pthread_setspecific
, "pthread_setspecific");
558 function pthread_getspecific
(key
: pthread_key_t
) return System
.Address
;
559 -- FSU_THREADS has a nonstandard pthread_getspecific
561 type destructor_pointer
is access procedure (arg
: System
.Address
);
563 function pthread_key_create
564 (key
: access pthread_key_t
;
565 destructor
: destructor_pointer
) return int
;
566 pragma Import
(C
, pthread_key_create
, "pthread_key_create");
570 type array_type_1
is array (Integer range 0 .. 3) of unsigned_long
;
571 type sigset_t
is record
572 X_X_sigbits
: array_type_1
;
574 pragma Convention
(C
, sigset_t
);
576 type pid_t
is new long
;
578 type time_t
is new long
;
580 type timespec
is record
584 pragma Convention
(C
, timespec
);
586 type clockid_t
is new int
;
587 CLOCK_REALTIME
: constant clockid_t
:= 0;
589 type struct_timeval
is record
593 pragma Convention
(C
, struct_timeval
);
595 type pthread_attr_t
is record
598 contentionscope
: int
;
603 starttime
: timespec
;
607 pragma Convention
(C
, pthread_attr_t
);
609 type pthread_condattr_t
is record
612 pragma Convention
(C
, pthread_condattr_t
);
614 type pthread_mutexattr_t
is record
619 pragma Convention
(C
, pthread_mutexattr_t
);
621 type sigjmp_buf
is array (Integer range 0 .. 18) of int
;
623 type pthread_t_struct
is record
624 context
: sigjmp_buf
;
628 stack_base
: System
.Address
;
630 pragma Convention
(C
, pthread_t_struct
);
632 type pthread_t
is access all pthread_t_struct
;
634 type queue_t
is record
635 head
: System
.Address
;
636 tail
: System
.Address
;
638 pragma Convention
(C
, queue_t
);
640 type pthread_mutex_t
is record
643 owner
: System
.Address
;
647 prev_max_ceiling_prio
: int
;
649 pragma Convention
(C
, pthread_mutex_t
);
651 type pthread_cond_t
is record
655 mutex
: System
.Address
;
657 pragma Convention
(C
, pthread_cond_t
);
659 type pthread_key_t
is new int
;
661 end System
.OS_Interface
;