1 ------------------------------------------------------------------------------
3 -- GNAT 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) 1991-1994, Florida State University --
10 -- Copyright (C) 1995-2008, 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, 51 Franklin Street, Fifth Floor, --
21 -- Boston, MA 02110-1301, 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 (POSIX Threads) version of this package
37 -- This package encapsulates all direct interfaces to OS services
38 -- that are needed by the tasking run-time (libgnarl).
40 -- PLEASE DO NOT add any with-clauses to this package or remove the pragma
41 -- Preelaborate. This package is designed to be a bottom-level (leaf) package.
45 with Ada
.Unchecked_Conversion
;
47 package System
.OS_Interface
is
50 pragma Linker_Options
("-lposix4");
51 pragma Linker_Options
("-lpthread");
53 -- The following is needed to allow --enable-threads=solaris
55 pragma Linker_Options
("-lthread");
57 subtype int
is Interfaces
.C
.int
;
58 subtype short
is Interfaces
.C
.short
;
59 subtype long
is Interfaces
.C
.long
;
60 subtype unsigned
is Interfaces
.C
.unsigned
;
61 subtype unsigned_short
is Interfaces
.C
.unsigned_short
;
62 subtype unsigned_long
is Interfaces
.C
.unsigned_long
;
63 subtype unsigned_char
is Interfaces
.C
.unsigned_char
;
64 subtype plain_char
is Interfaces
.C
.plain_char
;
65 subtype size_t
is Interfaces
.C
.size_t
;
71 function errno
return int
;
72 pragma Import
(C
, errno
, "__get_errno");
74 EAGAIN
: constant := 11;
75 EINTR
: constant := 4;
76 EINVAL
: constant := 22;
77 ENOMEM
: constant := 12;
78 ETIMEDOUT
: constant := 145;
84 Max_Interrupt
: constant := 45;
85 type Signal
is new int
range 0 .. Max_Interrupt
;
86 for Signal
'Size use int
'Size;
88 SIGHUP
: constant := 1; -- hangup
89 SIGINT
: constant := 2; -- interrupt (rubout)
90 SIGQUIT
: constant := 3; -- quit (ASCD FS)
91 SIGILL
: constant := 4; -- illegal instruction (not reset)
92 SIGTRAP
: constant := 5; -- trace trap (not reset)
93 SIGIOT
: constant := 6; -- IOT instruction
94 SIGABRT
: constant := 6; -- used by abort, replace SIGIOT in the future
95 SIGEMT
: constant := 7; -- EMT instruction
96 SIGFPE
: constant := 8; -- floating point exception
97 SIGKILL
: constant := 9; -- kill (cannot be caught or ignored)
98 SIGBUS
: constant := 10; -- bus error
99 SIGSEGV
: constant := 11; -- segmentation violation
100 SIGSYS
: constant := 12; -- bad argument to system call
101 SIGPIPE
: constant := 13; -- write on a pipe with no one to read it
102 SIGALRM
: constant := 14; -- alarm clock
103 SIGTERM
: constant := 15; -- software termination signal from kill
104 SIGUSR1
: constant := 16; -- user defined signal 1
105 SIGUSR2
: constant := 17; -- user defined signal 2
106 SIGCLD
: constant := 18; -- alias for SIGCHLD
107 SIGCHLD
: constant := 18; -- child status change
108 SIGPWR
: constant := 19; -- power-fail restart
109 SIGWINCH
: constant := 20; -- window size change
110 SIGURG
: constant := 21; -- urgent condition on IO channel
111 SIGPOLL
: constant := 22; -- pollable event occurred
112 SIGIO
: constant := 22; -- I/O possible (Solaris SIGPOLL alias)
113 SIGSTOP
: constant := 23; -- stop (cannot be caught or ignored)
114 SIGTSTP
: constant := 24; -- user stop requested from tty
115 SIGCONT
: constant := 25; -- stopped process has been continued
116 SIGTTIN
: constant := 26; -- background tty read attempted
117 SIGTTOU
: constant := 27; -- background tty write attempted
118 SIGVTALRM
: constant := 28; -- virtual timer expired
119 SIGPROF
: constant := 29; -- profiling timer expired
120 SIGXCPU
: constant := 30; -- CPU time limit exceeded
121 SIGXFSZ
: constant := 31; -- filesize limit exceeded
122 SIGWAITING
: constant := 32; -- process's lwps blocked (Solaris)
123 SIGLWP
: constant := 33; -- used by thread library (Solaris)
124 SIGFREEZE
: constant := 34; -- used by CPR (Solaris)
125 SIGTHAW
: constant := 35; -- used by CPR (Solaris)
126 SIGCANCEL
: constant := 36; -- thread cancellation signal (libthread)
128 SIGADAABORT
: constant := SIGABRT
;
130 type Signal_Set
is array (Natural range <>) of Signal
;
132 Unmasked
: constant Signal_Set
:= (SIGTRAP
, SIGLWP
, SIGPROF
);
134 -- Following signals should not be disturbed.
135 -- See c-posix-signals.c in FLORIST
137 Reserved
: constant Signal_Set
:=
138 (SIGKILL
, SIGSTOP
, SIGWAITING
, SIGCANCEL
);
140 type sigset_t
is private;
142 function sigaddset
(set
: access sigset_t
; sig
: Signal
) return int
;
143 pragma Import
(C
, sigaddset
, "sigaddset");
145 function sigdelset
(set
: access sigset_t
; sig
: Signal
) return int
;
146 pragma Import
(C
, sigdelset
, "sigdelset");
148 function sigfillset
(set
: access sigset_t
) return int
;
149 pragma Import
(C
, sigfillset
, "sigfillset");
151 function sigismember
(set
: access sigset_t
; sig
: Signal
) return int
;
152 pragma Import
(C
, sigismember
, "sigismember");
154 function sigemptyset
(set
: access sigset_t
) return int
;
155 pragma Import
(C
, sigemptyset
, "sigemptyset");
157 type struct_sigaction
is record
159 sa_handler
: System
.Address
;
164 pragma Convention
(C
, struct_sigaction
);
165 type struct_sigaction_ptr
is access all struct_sigaction
;
167 SA_SIGINFO
: constant := 16#
0008#
;
168 SA_ONSTACK
: constant := 16#
0001#
;
170 SIG_BLOCK
: constant := 1;
171 SIG_UNBLOCK
: constant := 2;
172 SIG_SETMASK
: constant := 3;
174 SIG_DFL
: constant := 0;
175 SIG_IGN
: constant := 1;
179 act
: struct_sigaction_ptr
;
180 oact
: struct_sigaction_ptr
) return int
;
181 pragma Import
(C
, sigaction
, "sigaction");
187 Time_Slice_Supported
: constant Boolean := True;
188 -- Indicates whether time slicing is supported
190 type timespec
is private;
192 type clockid_t
is private;
194 CLOCK_REALTIME
: constant clockid_t
;
196 function clock_gettime
197 (clock_id
: clockid_t
;
198 tp
: access timespec
) return int
;
199 pragma Import
(C
, clock_gettime
, "clock_gettime");
201 function To_Duration
(TS
: timespec
) return Duration;
202 pragma Inline
(To_Duration
);
204 function To_Timespec
(D
: Duration) return timespec
;
205 pragma Inline
(To_Timespec
);
207 type struct_timeval
is private;
209 function To_Duration
(TV
: struct_timeval
) return Duration;
210 pragma Inline
(To_Duration
);
212 function To_Timeval
(D
: Duration) return struct_timeval
;
213 pragma Inline
(To_Timeval
);
215 -------------------------
216 -- Priority Scheduling --
217 -------------------------
219 SCHED_FIFO
: constant := 1;
220 SCHED_RR
: constant := 2;
221 SCHED_OTHER
: constant := 0;
223 function To_Target_Priority
224 (Prio
: System
.Any_Priority
) return Interfaces
.C
.int
;
225 -- Maps System.Any_Priority to a POSIX priority
231 type pid_t
is private;
233 function kill
(pid
: pid_t
; sig
: Signal
) return int
;
234 pragma Import
(C
, kill
, "kill");
236 function getpid
return pid_t
;
237 pragma Import
(C
, getpid
, "getpid");
243 function lwp_self
return System
.Address
;
244 pragma Import
(C
, lwp_self
, "_lwp_self");
250 type Thread_Body
is access
251 function (arg
: System
.Address
) return System
.Address
;
252 pragma Convention
(C
, Thread_Body
);
254 function Thread_Body_Access
is new
255 Ada
.Unchecked_Conversion
(System
.Address
, Thread_Body
);
257 type pthread_t
is private;
258 subtype Thread_Id
is pthread_t
;
260 type pthread_mutex_t
is limited private;
261 type pthread_cond_t
is limited private;
262 type pthread_attr_t
is limited private;
263 type pthread_mutexattr_t
is limited private;
264 type pthread_condattr_t
is limited private;
265 type pthread_key_t
is private;
267 PTHREAD_CREATE_DETACHED
: constant := 16#
40#
;
269 PTHREAD_SCOPE_PROCESS
: constant := 0;
270 PTHREAD_SCOPE_SYSTEM
: constant := 1;
276 type stack_t
is record
277 ss_sp
: System
.Address
;
281 pragma Convention
(C
, stack_t
);
284 (ss
: not null access stack_t
;
285 oss
: access stack_t
) return int
;
286 pragma Import
(C
, sigaltstack
, "sigaltstack");
288 Alternate_Stack
: aliased System
.Address
;
289 -- This is a dummy definition, never used (Alternate_Stack_Size is null)
291 Alternate_Stack_Size
: constant := 0;
292 -- No alternate signal stack is used on this platform
294 Stack_Base_Available
: constant Boolean := False;
295 -- Indicates whether the stack base is available on this target
297 function Get_Stack_Base
(thread
: pthread_t
) return Address
;
298 pragma Inline
(Get_Stack_Base
);
299 -- Returns the stack base of the specified thread. Only call this function
300 -- when Stack_Base_Available is True.
302 function Get_Page_Size
return size_t
;
303 function Get_Page_Size
return Address
;
304 pragma Import
(C
, Get_Page_Size
, "getpagesize");
305 -- Returns the size of a page, or 0 if this is not relevant on this target
307 PROT_NONE
: constant := 0;
308 PROT_READ
: constant := 1;
309 PROT_WRITE
: constant := 2;
310 PROT_EXEC
: constant := 4;
311 PROT_ALL
: constant := PROT_READ
+ PROT_WRITE
+ PROT_EXEC
;
312 PROT_ON
: constant := PROT_READ
;
313 PROT_OFF
: constant := PROT_ALL
;
315 function mprotect
(addr
: Address
; len
: size_t
; prot
: int
) return int
;
316 pragma Import
(C
, mprotect
);
318 ---------------------------------------
319 -- Nonstandard Thread Initialization --
320 ---------------------------------------
322 procedure pthread_init
;
323 -- This is a dummy procedure to share some GNULLI files
325 -------------------------
326 -- POSIX.1c Section 3 --
327 -------------------------
330 (set
: access sigset_t
;
331 sig
: access Signal
) return int
;
332 pragma Import
(C
, sigwait
, "__posix_sigwait");
334 function pthread_kill
336 sig
: Signal
) return int
;
337 pragma Import
(C
, pthread_kill
, "pthread_kill");
339 function pthread_sigmask
341 set
: access sigset_t
;
342 oset
: access sigset_t
) return int
;
343 pragma Import
(C
, pthread_sigmask
, "pthread_sigmask");
345 --------------------------
346 -- POSIX.1c Section 11 --
347 --------------------------
349 function pthread_mutexattr_init
350 (attr
: access pthread_mutexattr_t
) return int
;
351 pragma Import
(C
, pthread_mutexattr_init
, "pthread_mutexattr_init");
353 function pthread_mutexattr_destroy
354 (attr
: access pthread_mutexattr_t
) return int
;
355 pragma Import
(C
, pthread_mutexattr_destroy
, "pthread_mutexattr_destroy");
357 function pthread_mutex_init
358 (mutex
: access pthread_mutex_t
;
359 attr
: access pthread_mutexattr_t
) return int
;
360 pragma Import
(C
, pthread_mutex_init
, "pthread_mutex_init");
362 function pthread_mutex_destroy
(mutex
: access pthread_mutex_t
) return int
;
363 pragma Import
(C
, pthread_mutex_destroy
, "pthread_mutex_destroy");
365 function pthread_mutex_lock
(mutex
: access pthread_mutex_t
) return int
;
366 pragma Import
(C
, pthread_mutex_lock
, "pthread_mutex_lock");
368 function pthread_mutex_unlock
(mutex
: access pthread_mutex_t
) return int
;
369 pragma Import
(C
, pthread_mutex_unlock
, "pthread_mutex_unlock");
371 function pthread_condattr_init
372 (attr
: access pthread_condattr_t
) return int
;
373 pragma Import
(C
, pthread_condattr_init
, "pthread_condattr_init");
375 function pthread_condattr_destroy
376 (attr
: access pthread_condattr_t
) return int
;
377 pragma Import
(C
, pthread_condattr_destroy
, "pthread_condattr_destroy");
379 function pthread_cond_init
380 (cond
: access pthread_cond_t
;
381 attr
: access pthread_condattr_t
) return int
;
382 pragma Import
(C
, pthread_cond_init
, "pthread_cond_init");
384 function pthread_cond_destroy
(cond
: access pthread_cond_t
) return int
;
385 pragma Import
(C
, pthread_cond_destroy
, "pthread_cond_destroy");
387 function pthread_cond_signal
(cond
: access pthread_cond_t
) return int
;
388 pragma Import
(C
, pthread_cond_signal
, "pthread_cond_signal");
390 function pthread_cond_wait
391 (cond
: access pthread_cond_t
;
392 mutex
: access pthread_mutex_t
) return int
;
393 pragma Import
(C
, pthread_cond_wait
, "pthread_cond_wait");
395 function pthread_cond_timedwait
396 (cond
: access pthread_cond_t
;
397 mutex
: access pthread_mutex_t
;
398 abstime
: access timespec
) return int
;
399 pragma Import
(C
, pthread_cond_timedwait
, "pthread_cond_timedwait");
401 Relative_Timed_Wait
: constant Boolean := False;
402 -- pthread_cond_timedwait requires an absolute delay time
404 --------------------------
405 -- POSIX.1c Section 13 --
406 --------------------------
408 PTHREAD_PRIO_NONE
: constant := 0;
409 PTHREAD_PRIO_INHERIT
: constant := 16#
10#
;
410 PTHREAD_PRIO_PROTECT
: constant := 16#
20#
;
412 function pthread_mutexattr_setprotocol
413 (attr
: access pthread_mutexattr_t
;
414 protocol
: int
) return int
;
415 pragma Import
(C
, pthread_mutexattr_setprotocol
);
417 function pthread_mutexattr_setprioceiling
418 (attr
: access pthread_mutexattr_t
;
419 prioceiling
: int
) return int
;
420 pragma Import
(C
, pthread_mutexattr_setprioceiling
);
422 type Array_8_Int
is array (0 .. 7) of int
;
423 type struct_sched_param
is record
424 sched_priority
: int
;
425 sched_pad
: Array_8_Int
;
428 function pthread_setschedparam
431 param
: access struct_sched_param
) return int
;
432 pragma Import
(C
, pthread_setschedparam
, "pthread_setschedparam");
434 function pthread_attr_setscope
435 (attr
: access pthread_attr_t
;
436 contentionscope
: int
) return int
;
437 pragma Import
(C
, pthread_attr_setscope
, "pthread_attr_setscope");
439 function pthread_attr_setinheritsched
440 (attr
: access pthread_attr_t
;
441 inheritsched
: int
) return int
;
442 pragma Import
(C
, pthread_attr_setinheritsched
);
444 function pthread_attr_setschedpolicy
445 (attr
: access pthread_attr_t
;
446 policy
: int
) return int
;
447 pragma Import
(C
, pthread_attr_setschedpolicy
);
449 function sched_yield
return int
;
450 pragma Import
(C
, sched_yield
, "sched_yield");
452 ---------------------------
453 -- P1003.1c - Section 16 --
454 ---------------------------
456 function pthread_attr_init
(attributes
: access pthread_attr_t
) return int
;
457 pragma Import
(C
, pthread_attr_init
, "pthread_attr_init");
459 function pthread_attr_destroy
460 (attributes
: access pthread_attr_t
) return int
;
461 pragma Import
(C
, pthread_attr_destroy
, "pthread_attr_destroy");
463 function pthread_attr_setdetachstate
464 (attr
: access pthread_attr_t
;
465 detachstate
: int
) return int
;
466 pragma Import
(C
, pthread_attr_setdetachstate
);
468 function pthread_attr_setstacksize
469 (attr
: access pthread_attr_t
;
470 stacksize
: size_t
) return int
;
471 pragma Import
(C
, pthread_attr_setstacksize
);
473 function pthread_create
474 (thread
: access pthread_t
;
475 attributes
: access pthread_attr_t
;
476 start_routine
: Thread_Body
;
477 arg
: System
.Address
) return int
;
478 pragma Import
(C
, pthread_create
, "pthread_create");
480 procedure pthread_exit
(status
: System
.Address
);
481 pragma Import
(C
, pthread_exit
, "pthread_exit");
483 function pthread_self
return pthread_t
;
484 pragma Import
(C
, pthread_self
, "pthread_self");
486 --------------------------
487 -- POSIX.1c Section 17 --
488 --------------------------
490 function pthread_setspecific
491 (key
: pthread_key_t
;
492 value
: System
.Address
) return int
;
493 pragma Import
(C
, pthread_setspecific
, "pthread_setspecific");
495 function pthread_getspecific
(key
: pthread_key_t
) return System
.Address
;
496 pragma Import
(C
, pthread_getspecific
, "pthread_getspecific");
498 type destructor_pointer
is access procedure (arg
: System
.Address
);
499 pragma Convention
(C
, destructor_pointer
);
501 function pthread_key_create
502 (key
: access pthread_key_t
;
503 destructor
: destructor_pointer
) return int
;
504 pragma Import
(C
, pthread_key_create
, "pthread_key_create");
508 type array_type_1
is array (Integer range 0 .. 3) of unsigned_long
;
509 type sigset_t
is record
510 X_X_sigbits
: array_type_1
;
512 pragma Convention
(C
, sigset_t
);
514 type pid_t
is new long
;
516 type time_t
is new long
;
518 type timespec
is record
522 pragma Convention
(C
, timespec
);
524 type clockid_t
is new int
;
525 CLOCK_REALTIME
: constant clockid_t
:= 0;
527 type struct_timeval
is record
531 pragma Convention
(C
, struct_timeval
);
533 type pthread_attr_t
is record
534 pthread_attrp
: System
.Address
;
536 pragma Convention
(C
, pthread_attr_t
);
538 type pthread_condattr_t
is record
539 pthread_condattrp
: System
.Address
;
541 pragma Convention
(C
, pthread_condattr_t
);
543 type pthread_mutexattr_t
is record
544 pthread_mutexattrp
: System
.Address
;
546 pragma Convention
(C
, pthread_mutexattr_t
);
548 type pthread_t
is new unsigned
;
550 type uint64_t
is mod 2 ** 64;
552 type pthread_mutex_t
is record
553 pthread_mutex_flags
: uint64_t
;
554 pthread_mutex_owner64
: uint64_t
;
555 pthread_mutex_data
: uint64_t
;
557 pragma Convention
(C
, pthread_mutex_t
);
558 type pthread_mutex_t_ptr
is access pthread_mutex_t
;
560 type pthread_cond_t
is record
561 pthread_cond_flags
: uint64_t
;
562 pthread_cond_data
: uint64_t
;
564 pragma Convention
(C
, pthread_cond_t
);
566 type pthread_key_t
is new unsigned
;
568 end System
.OS_Interface
;