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. --
31 -- Extensive contributions were provided by Ada Core Technologies Inc. --
33 ------------------------------------------------------------------------------
35 -- This is a Solaris (FSU THREADS) version of this package.
37 -- This package includes 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
("-lgthreads");
49 pragma Linker_Options
("-lmalloc");
51 subtype int
is Interfaces
.C
.int
;
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 := 145;
78 Max_Interrupt
: constant := 45;
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 SIGIOT
: constant := 6; -- IOT instruction
88 SIGABRT
: constant := 6; -- used by abort, replace SIGIOT in the future
89 SIGEMT
: constant := 7; -- EMT instruction
90 SIGFPE
: constant := 8; -- floating point exception
91 SIGKILL
: constant := 9; -- kill (cannot be caught or ignored)
92 SIGBUS
: constant := 10; -- bus error
93 SIGSEGV
: constant := 11; -- segmentation violation
94 SIGSYS
: constant := 12; -- bad argument to system call
95 SIGPIPE
: constant := 13; -- write on a pipe with no one to read it
96 SIGALRM
: constant := 14; -- alarm clock
97 SIGTERM
: constant := 15; -- software termination signal from kill
98 SIGUSR1
: constant := 16; -- user defined signal 1
99 SIGUSR2
: constant := 17; -- user defined signal 2
100 SIGCLD
: constant := 18; -- alias for SIGCHLD
101 SIGCHLD
: constant := 18; -- child status change
102 SIGPWR
: constant := 19; -- power-fail restart
103 SIGWINCH
: constant := 20; -- window size change
104 SIGURG
: constant := 21; -- urgent condition on IO channel
105 SIGPOLL
: constant := 22; -- pollable event occurred
106 SIGIO
: constant := 22; -- I/O possible (Solaris SIGPOLL alias)
107 SIGSTOP
: constant := 23; -- stop (cannot be caught or ignored)
108 SIGTSTP
: constant := 24; -- user stop requested from tty
109 SIGCONT
: constant := 25; -- stopped process has been continued
110 SIGTTIN
: constant := 26; -- background tty read attempted
111 SIGTTOU
: constant := 27; -- background tty write attempted
112 SIGVTALRM
: constant := 28; -- virtual timer expired
113 SIGPROF
: constant := 29; -- profiling timer expired
114 SIGXCPU
: constant := 30; -- CPU time limit exceeded
115 SIGXFSZ
: constant := 31; -- filesize limit exceeded
116 SIGWAITING
: constant := 32; -- process's lwps blocked (Solaris)
117 SIGLWP
: constant := 33; -- used by thread library (Solaris)
118 SIGFREEZE
: constant := 34; -- used by CPR (Solaris)
119 SIGTHAW
: constant := 35; -- used by CPR (Solaris)
120 SIGCANCEL
: constant := 36; -- used for thread cancel (Solaris)
121 SIGRTMIN
: constant := 38; -- first (highest-priority) realtime signal
122 SIGRTMAX
: constant := 45; -- last (lowest-priority) realtime signal
124 type Signal_Set
is array (Natural range <>) of Signal
;
126 Unmasked
: constant Signal_Set
:=
127 (SIGTRAP
, SIGLWP
, SIGTTIN
, SIGTTOU
, SIGTSTP
, SIGPROF
);
129 Reserved
: constant Signal_Set
:=
130 (SIGKILL
, SIGSTOP
, SIGALRM
, SIGVTALRM
, SIGWAITING
, SIGRTMAX
);
132 type sigset_t
is private;
134 function sigaddset
(set
: access sigset_t
; sig
: Signal
) return int
;
135 pragma Import
(C
, sigaddset
, "sigaddset");
137 function sigdelset
(set
: access sigset_t
; sig
: Signal
) return int
;
138 pragma Import
(C
, sigdelset
, "sigdelset");
140 function sigfillset
(set
: access sigset_t
) return int
;
141 pragma Import
(C
, sigfillset
, "sigfillset");
143 function sigismember
(set
: access sigset_t
; sig
: Signal
) return int
;
144 pragma Import
(C
, sigismember
, "sigismember");
146 function sigemptyset
(set
: access sigset_t
) return int
;
147 pragma Import
(C
, sigemptyset
, "sigemptyset");
149 type union_type_3
is new String (1 .. 116);
150 type siginfo_t
is record
154 X_data
: union_type_3
;
156 pragma Convention
(C
, siginfo_t
);
158 -- The types mcontext_t and gregset_t are part of the ucontext_t
159 -- information, which is specific to Solaris2.4 for SPARC
160 -- The ucontext_t info seems to be used by the handler
161 -- for SIGSEGV to decide whether it is a Storage_Error (stack overflow) or
162 -- a Constraint_Error (bad pointer). The original code that did this
163 -- is suspect, so it is not clear whether we really need this part of
164 -- the signal context information, or perhaps something else.
165 -- More analysis is needed, after which these declarations may need to
168 EMT_TAGOVF
: constant := 1; -- tag overflow
169 FPE_INTDIV
: constant := 1; -- integer divide by zero
170 FPE_INTOVF
: constant := 2; -- integer overflow
171 FPE_FLTDIV
: constant := 3; -- floating point divide by zero
172 FPE_FLTOVF
: constant := 4; -- floating point overflow
173 FPE_FLTUND
: constant := 5; -- floating point underflow
174 FPE_FLTRES
: constant := 6; -- floating point inexact result
175 FPE_FLTINV
: constant := 7; -- invalid floating point operation
176 FPE_FLTSUB
: constant := 8; -- subscript out of range
178 SEGV_MAPERR
: constant := 1; -- address not mapped to object
179 SEGV_ACCERR
: constant := 2; -- invalid permissions
181 BUS_ADRALN
: constant := 1; -- invalid address alignment
182 BUS_ADRERR
: constant := 2; -- non-existent physical address
183 BUS_OBJERR
: constant := 3; -- object specific hardware error
185 ILL_ILLOPC
: constant := 1; -- illegal opcode
186 ILL_ILLOPN
: constant := 2; -- illegal operand
187 ILL_ILLADR
: constant := 3; -- illegal addressing mode
188 ILL_ILLTRP
: constant := 4; -- illegal trap
189 ILL_PRVOPC
: constant := 5; -- privileged opcode
190 ILL_PRVREG
: constant := 6; -- privileged register
191 ILL_COPROC
: constant := 7; -- co-processor
192 ILL_BADSTK
: constant := 8; -- bad stack
194 type greg_t
is new int
;
196 type gregset_t
is array (Integer range 0 .. 18) of greg_t
;
198 REG_O0
: constant := 11;
199 -- index of saved register O0 in ucontext.uc_mcontext.gregs array
201 type union_type_2
is new String (1 .. 128);
202 type record_type_1
is record
203 fpu_fr
: union_type_2
;
204 fpu_q
: System
.Address
;
206 fpu_qcnt
: unsigned_char
;
207 fpu_q_entrysize
: unsigned_char
;
208 fpu_en
: unsigned_char
;
210 pragma Convention
(C
, record_type_1
);
211 type array_type_7
is array (Integer range 0 .. 20) of long
;
212 type mcontext_t
is record
214 gwins
: System
.Address
;
215 fpregs
: record_type_1
;
216 filler
: array_type_7
;
218 pragma Convention
(C
, mcontext_t
);
220 type record_type_2
is record
221 ss_sp
: System
.Address
;
225 pragma Convention
(C
, record_type_2
);
226 type array_type_8
is array (Integer range 0 .. 22) of long
;
227 type ucontext_t
is record
228 uc_flags
: unsigned_long
;
229 uc_link
: System
.Address
;
230 uc_sigmask
: sigset_t
;
231 uc_stack
: record_type_2
;
232 uc_mcontext
: mcontext_t
;
233 uc_filler
: array_type_8
;
235 pragma Convention
(C
, ucontext_t
);
237 type Signal_Handler
is access procedure
239 info
: access siginfo_t
;
240 context
: access ucontext_t
);
242 type union_type_1
is new plain_char
;
243 type array_type_2
is array (Integer range 0 .. 1) of int
;
244 type struct_sigaction
is record
246 sa_handler
: System
.Address
;
248 sa_resv
: array_type_2
;
250 pragma Convention
(C
, struct_sigaction
);
251 type struct_sigaction_ptr
is access all struct_sigaction
;
253 SIG_BLOCK
: constant := 1;
254 SIG_UNBLOCK
: constant := 2;
255 SIG_SETMASK
: constant := 3;
257 SIG_DFL
: constant := 0;
258 SIG_IGN
: constant := 1;
262 act
: struct_sigaction_ptr
;
263 oact
: struct_sigaction_ptr
) return int
;
264 pragma Import
(C
, sigaction
, "sigaction");
270 Time_Slice_Supported
: constant Boolean := False;
271 -- Indicates wether time slicing is supported (i.e FSU threads have been
272 -- compiled with DEF_RR)
274 type timespec
is private;
276 type clockid_t
is private;
278 CLOCK_REALTIME
: constant clockid_t
;
280 function clock_gettime
281 (clock_id
: clockid_t
;
282 tp
: access timespec
) return int
;
283 pragma Import
(C
, clock_gettime
, "clock_gettime");
285 function To_Duration
(TS
: timespec
) return Duration;
286 pragma Inline
(To_Duration
);
288 function To_Timespec
(D
: Duration) return timespec
;
289 pragma Inline
(To_Timespec
);
291 type struct_timeval
is private;
293 function To_Duration
(TV
: struct_timeval
) return Duration;
294 pragma Inline
(To_Duration
);
296 function To_Timeval
(D
: Duration) return struct_timeval
;
297 pragma Inline
(To_Timeval
);
299 -------------------------
300 -- Priority Scheduling --
301 -------------------------
303 SCHED_FIFO
: constant := 0;
304 SCHED_RR
: constant := 1;
305 SCHED_OTHER
: constant := 2;
311 type pid_t
is private;
313 function kill
(pid
: pid_t
; sig
: Signal
) return int
;
314 pragma Import
(C
, kill
, "kill");
316 function getpid
return pid_t
;
317 pragma Import
(C
, getpid
, "getpid");
323 function lwp_self
return System
.Address
;
324 -- lwp_self does not exist on this thread library, revert to pthread_self
325 -- which is the closest approximation (with getpid). This function is
326 -- needed to share 7staprop.adb across POSIX-like targets.
327 pragma Import
(C
, lwp_self
, "pthread_self");
333 type Thread_Body
is access
334 function (arg
: System
.Address
) return System
.Address
;
335 type pthread_t
is private;
336 subtype Thread_Id
is pthread_t
;
338 type pthread_mutex_t
is limited private;
339 type pthread_cond_t
is limited private;
340 type pthread_attr_t
is limited private;
341 type pthread_mutexattr_t
is limited private;
342 type pthread_condattr_t
is limited private;
343 type pthread_key_t
is private;
345 PTHREAD_CREATE_DETACHED
: constant := 1;
351 Stack_Base_Available
: constant Boolean := False;
352 -- Indicates wether the stack base is available on this target.
353 -- This allows us to share s-osinte.adb between all the FSU run time.
354 -- Note that this value can only be true if pthread_t has a complete
355 -- definition that corresponds exactly to the C header files.
357 function Get_Stack_Base
(thread
: pthread_t
) return Address
;
358 pragma Inline
(Get_Stack_Base
);
359 -- returns the stack base of the specified thread.
360 -- Only call this function when Stack_Base_Available is True.
362 function Get_Page_Size
return size_t
;
363 function Get_Page_Size
return Address
;
364 pragma Import
(C
, Get_Page_Size
, "getpagesize");
365 -- returns the size of a page, or 0 if this is not relevant on this
368 PROT_NONE
: constant := 0;
369 PROT_READ
: constant := 1;
370 PROT_WRITE
: constant := 2;
371 PROT_EXEC
: constant := 4;
372 PROT_ALL
: constant := PROT_READ
+ PROT_WRITE
+ PROT_EXEC
;
374 PROT_ON
: constant := PROT_NONE
;
375 PROT_OFF
: constant := PROT_ALL
;
377 function mprotect
(addr
: Address
; len
: size_t
; prot
: int
) return int
;
378 pragma Import
(C
, mprotect
);
380 ---------------------------------------
381 -- Nonstandard Thread Initialization --
382 ---------------------------------------
384 procedure pthread_init
;
385 -- FSU_THREADS requires pthread_init, which is nonstandard
386 -- and this should be invoked during the elaboration of s-taprop.adb
387 pragma Import
(C
, pthread_init
, "pthread_init");
389 -------------------------
390 -- POSIX.1c Section 3 --
391 -------------------------
393 function sigwait
(set
: access sigset_t
; sig
: access Signal
) return int
;
394 -- FSU_THREADS has a nonstandard sigwait
396 function pthread_kill
(thread
: pthread_t
; sig
: Signal
) return int
;
397 pragma Import
(C
, pthread_kill
, "pthread_kill");
399 type sigset_t_ptr
is access all sigset_t
;
401 function pthread_sigmask
404 oset
: sigset_t_ptr
) return int
;
405 pragma Import
(C
, pthread_sigmask
, "sigprocmask");
407 --------------------------
408 -- POSIX.1c Section 11 --
409 --------------------------
411 function pthread_mutexattr_init
412 (attr
: access pthread_mutexattr_t
) return int
;
413 pragma Import
(C
, pthread_mutexattr_init
, "pthread_mutexattr_init");
415 function pthread_mutexattr_destroy
416 (attr
: access pthread_mutexattr_t
) return int
;
417 pragma Import
(C
, pthread_mutexattr_destroy
, "pthread_mutexattr_destroy");
419 function pthread_mutex_init
420 (mutex
: access pthread_mutex_t
;
421 attr
: access pthread_mutexattr_t
) return int
;
422 pragma Import
(C
, pthread_mutex_init
, "pthread_mutex_init");
424 function pthread_mutex_destroy
(mutex
: access pthread_mutex_t
) return int
;
425 pragma Import
(C
, pthread_mutex_destroy
, "pthread_mutex_destroy");
427 function pthread_mutex_lock
(mutex
: access pthread_mutex_t
) return int
;
428 -- FSU_THREADS has nonstandard pthread_mutex_lock
430 function pthread_mutex_unlock
(mutex
: access pthread_mutex_t
) return int
;
431 -- FSU_THREADS has nonstandard pthread_mutex_lock
433 function pthread_condattr_init
434 (attr
: access pthread_condattr_t
) return int
;
435 pragma Import
(C
, pthread_condattr_init
, "pthread_condattr_init");
437 function pthread_condattr_destroy
438 (attr
: access pthread_condattr_t
) return int
;
439 pragma Import
(C
, pthread_condattr_destroy
, "pthread_condattr_destroy");
441 function pthread_cond_init
442 (cond
: access pthread_cond_t
;
443 attr
: access pthread_condattr_t
) return int
;
444 pragma Import
(C
, pthread_cond_init
, "pthread_cond_init");
446 function pthread_cond_destroy
(cond
: access pthread_cond_t
) return int
;
447 pragma Import
(C
, pthread_cond_destroy
, "pthread_cond_destroy");
449 function pthread_cond_signal
(cond
: access pthread_cond_t
) return int
;
450 pragma Import
(C
, pthread_cond_signal
, "pthread_cond_signal");
452 function pthread_cond_wait
453 (cond
: access pthread_cond_t
;
454 mutex
: access pthread_mutex_t
) return int
;
455 -- FSU_THREADS has a nonstandard pthread_cond_wait
457 function pthread_cond_timedwait
458 (cond
: access pthread_cond_t
;
459 mutex
: access pthread_mutex_t
;
460 abstime
: access timespec
) return int
;
461 -- FSU_THREADS has a nonstandard pthread_cond_timedwait
463 Relative_Timed_Wait
: constant Boolean := False;
464 -- pthread_cond_timedwait requires an absolute delay time
466 --------------------------
467 -- POSIX.1c Section 13 --
468 --------------------------
470 PTHREAD_PRIO_NONE
: constant := 0;
471 PTHREAD_PRIO_PROTECT
: constant := 2;
472 PTHREAD_PRIO_INHERIT
: constant := 1;
474 function pthread_mutexattr_setprotocol
475 (attr
: access pthread_mutexattr_t
;
476 protocol
: int
) return int
;
477 pragma Import
(C
, pthread_mutexattr_setprotocol
);
479 function pthread_mutexattr_setprioceiling
480 (attr
: access pthread_mutexattr_t
;
481 prioceiling
: int
) return int
;
483 (C
, pthread_mutexattr_setprioceiling
,
484 "pthread_mutexattr_setprio_ceiling");
486 type struct_sched_param
is record
487 sched_priority
: int
; -- scheduling priority
490 function pthread_setschedparam
493 param
: access struct_sched_param
) return int
;
494 -- FSU_THREADS does not have pthread_setschedparam
496 function pthread_attr_setscope
497 (attr
: access pthread_attr_t
;
498 contentionscope
: int
) return int
;
499 pragma Import
(C
, pthread_attr_setscope
, "pthread_attr_setscope");
501 function pthread_attr_setinheritsched
502 (attr
: access pthread_attr_t
;
503 inheritsched
: int
) return int
;
504 pragma Import
(C
, pthread_attr_setinheritsched
);
506 function pthread_attr_setschedpolicy
507 (attr
: access pthread_attr_t
;
508 policy
: int
) return int
;
509 pragma Import
(C
, pthread_attr_setschedpolicy
, "pthread_attr_setsched");
511 function sched_yield
return int
;
512 -- FSU_THREADS does not have sched_yield;
514 ---------------------------
515 -- P1003.1c - Section 16 --
516 ---------------------------
518 function pthread_attr_init
(attributes
: access pthread_attr_t
) return int
;
519 pragma Import
(C
, pthread_attr_init
, "pthread_attr_init");
521 function pthread_attr_destroy
522 (attributes
: access pthread_attr_t
) return int
;
523 pragma Import
(C
, pthread_attr_destroy
, "pthread_attr_destroy");
525 function pthread_attr_setdetachstate
526 (attr
: access pthread_attr_t
;
527 detachstate
: int
) return int
;
528 -- FSU_THREADS has a nonstandard pthread_attr_setdetachstate
530 function pthread_attr_setstacksize
531 (attr
: access pthread_attr_t
;
532 stacksize
: size_t
) return int
;
533 pragma Import
(C
, pthread_attr_setstacksize
);
535 function pthread_create
536 (thread
: access pthread_t
;
537 attributes
: access pthread_attr_t
;
538 start_routine
: Thread_Body
;
539 arg
: System
.Address
) return int
;
540 pragma Import
(C
, pthread_create
, "pthread_create");
542 procedure pthread_exit
(status
: System
.Address
);
543 pragma Import
(C
, pthread_exit
, "pthread_exit");
545 function pthread_self
return pthread_t
;
546 pragma Import
(C
, pthread_self
, "pthread_self");
548 --------------------------
549 -- POSIX.1c Section 17 --
550 --------------------------
552 function pthread_setspecific
553 (key
: pthread_key_t
;
554 value
: System
.Address
) return int
;
555 pragma Import
(C
, pthread_setspecific
, "pthread_setspecific");
557 function pthread_getspecific
(key
: pthread_key_t
) return System
.Address
;
558 -- FSU_THREADS has a nonstandard pthread_getspecific
560 type destructor_pointer
is access procedure (arg
: System
.Address
);
562 function pthread_key_create
563 (key
: access pthread_key_t
;
564 destructor
: destructor_pointer
) return int
;
565 pragma Import
(C
, pthread_key_create
, "pthread_key_create");
569 type array_type_1
is array (Integer range 0 .. 3) of unsigned_long
;
570 type sigset_t
is record
571 X_X_sigbits
: array_type_1
;
573 pragma Convention
(C
, sigset_t
);
575 type pid_t
is new long
;
577 type time_t
is new long
;
579 type timespec
is record
583 pragma Convention
(C
, timespec
);
585 type clockid_t
is new int
;
586 CLOCK_REALTIME
: constant clockid_t
:= 0;
588 type struct_timeval
is record
592 pragma Convention
(C
, struct_timeval
);
594 type pthread_attr_t
is record
597 contentionscope
: int
;
602 starttime
: timespec
;
606 pragma Convention
(C
, pthread_attr_t
);
608 type pthread_condattr_t
is record
611 pragma Convention
(C
, pthread_condattr_t
);
613 type pthread_mutexattr_t
is record
618 pragma Convention
(C
, pthread_mutexattr_t
);
620 type sigjmp_buf
is array (Integer range 0 .. 18) of int
;
622 type pthread_t_struct
is record
623 context
: sigjmp_buf
;
627 stack_base
: System
.Address
;
629 pragma Convention
(C
, pthread_t_struct
);
631 type pthread_t
is access all pthread_t_struct
;
633 type queue_t
is record
634 head
: System
.Address
;
635 tail
: System
.Address
;
637 pragma Convention
(C
, queue_t
);
639 type pthread_mutex_t
is record
642 owner
: System
.Address
;
646 prev_max_ceiling_prio
: int
;
648 pragma Convention
(C
, pthread_mutex_t
);
650 type pthread_cond_t
is record
654 mutex
: System
.Address
;
656 pragma Convention
(C
, pthread_cond_t
);
658 type pthread_key_t
is new int
;
660 end System
.OS_Interface
;