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) 1995-2009, 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 the HP-UX 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.
43 with Ada
.Unchecked_Conversion
;
47 package System
.OS_Interface
is
50 pragma Linker_Options
("-lcma");
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 ETIME
: constant := 52;
74 ETIMEDOUT
: constant := 238;
76 FUNC_ERR
: constant := -1;
82 Max_Interrupt
: constant := 44;
83 type Signal
is new int
range 0 .. Max_Interrupt
;
84 for Signal
'Size use int
'Size;
86 SIGHUP
: constant := 1; -- hangup
87 SIGINT
: constant := 2; -- interrupt (rubout)
88 SIGQUIT
: constant := 3; -- quit (ASCD FS)
89 SIGILL
: constant := 4; -- illegal instruction (not reset)
90 SIGTRAP
: constant := 5; -- trace trap (not reset)
91 SIGIOT
: constant := 6; -- IOT instruction
92 SIGABRT
: constant := 6; -- used by abort, replace SIGIOT in the future
93 SIGEMT
: constant := 7; -- EMT instruction
94 SIGFPE
: constant := 8; -- floating point exception
95 SIGKILL
: constant := 9; -- kill (cannot be caught or ignored)
96 SIGBUS
: constant := 10; -- bus error
97 SIGSEGV
: constant := 11; -- segmentation violation
98 SIGSYS
: constant := 12; -- bad argument to system call
99 SIGPIPE
: constant := 13; -- write on a pipe with no one to read it
100 SIGALRM
: constant := 14; -- alarm clock
101 SIGTERM
: constant := 15; -- software termination signal from kill
102 SIGUSR1
: constant := 16; -- user defined signal 1
103 SIGUSR2
: constant := 17; -- user defined signal 2
104 SIGCLD
: constant := 18; -- alias for SIGCHLD
105 SIGCHLD
: constant := 18; -- child status change
106 SIGPWR
: constant := 19; -- power-fail restart
107 SIGVTALRM
: constant := 20; -- virtual timer alarm
108 SIGPROF
: constant := 21; -- profiling timer alarm
109 SIGIO
: constant := 22; -- asynchronous I/O
110 SIGPOLL
: constant := 22; -- pollable event occurred
111 SIGWINCH
: constant := 23; -- window size change
112 SIGSTOP
: constant := 24; -- stop (cannot be caught or ignored)
113 SIGTSTP
: constant := 25; -- user stop requested from tty
114 SIGCONT
: constant := 26; -- stopped process has been continued
115 SIGTTIN
: constant := 27; -- background tty read attempted
116 SIGTTOU
: constant := 28; -- background tty write attempted
117 SIGURG
: constant := 29; -- urgent condition on IO channel
118 SIGLOST
: constant := 30; -- remote lock lost (NFS)
119 SIGDIL
: constant := 32; -- DIL signal
120 SIGXCPU
: constant := 33; -- CPU time limit exceeded (setrlimit)
121 SIGXFSZ
: constant := 34; -- file size limit exceeded (setrlimit)
123 SIGADAABORT
: constant := SIGABRT
;
124 -- Note: on other targets, we usually use SIGABRT, but on HP/UX, it
125 -- appears that SIGABRT can't be used in sigwait(), so we use SIGTERM.
127 type Signal_Set
is array (Natural range <>) of Signal
;
129 Unmasked
: constant Signal_Set
:=
130 (SIGBUS
, SIGTRAP
, SIGTTIN
, SIGTTOU
, SIGTSTP
);
132 Reserved
: constant Signal_Set
:= (SIGKILL
, SIGSTOP
);
134 type sigset_t
is private;
136 type isr_address
is access procedure (sig
: int
);
137 pragma Convention
(C
, isr_address
);
139 function intr_attach
(sig
: int
; handler
: isr_address
) return long
;
141 Intr_Attach_Reset
: constant Boolean := True;
142 -- True if intr_attach is reset after an interrupt handler is called
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 Signal_Handler
is access procedure (signo
: Signal
);
161 type struct_sigaction
is record
162 sa_handler
: System
.Address
;
166 pragma Convention
(C
, struct_sigaction
);
167 type struct_sigaction_ptr
is access all struct_sigaction
;
169 SA_RESTART
: constant := 16#
40#
;
170 SA_SIGINFO
: constant := 16#
10#
;
171 SA_ONSTACK
: constant := 16#
01#
;
173 SIG_BLOCK
: constant := 0;
174 SIG_UNBLOCK
: constant := 1;
175 SIG_SETMASK
: constant := 2;
177 SIG_DFL
: constant := 0;
178 SIG_IGN
: constant := 1;
179 SIG_ERR
: constant := -1;
183 act
: struct_sigaction_ptr
;
184 oact
: struct_sigaction_ptr
) return int
;
185 pragma Import
(C
, sigaction
, "sigaction");
191 type timespec
is private;
193 function nanosleep
(rqtp
, rmtp
: access timespec
) return int
;
194 pragma Import
(C
, nanosleep
);
196 type clockid_t
is private;
198 CLOCK_REALTIME
: constant clockid_t
;
200 function Clock_Gettime
201 (Clock_Id
: clockid_t
; Tp
: access timespec
) return int
;
202 pragma Import
(C
, Clock_Gettime
);
204 function To_Duration
(TS
: timespec
) return Duration;
205 pragma Inline
(To_Duration
);
207 function To_Timespec
(D
: Duration) return timespec
;
208 pragma Inline
(To_Timespec
);
210 -------------------------
211 -- Priority Scheduling --
212 -------------------------
214 SCHED_FIFO
: constant := 0;
215 SCHED_RR
: constant := 1;
216 SCHED_OTHER
: constant := 2;
222 type pid_t
is private;
224 function kill
(pid
: pid_t
; sig
: Signal
) return int
;
225 pragma Import
(C
, kill
, "kill");
227 function getpid
return pid_t
;
228 pragma Import
(C
, getpid
, "getpid");
234 type Thread_Body
is access
235 function (arg
: System
.Address
) return System
.Address
;
236 pragma Convention
(C
, Thread_Body
);
238 function Thread_Body_Access
is new
239 Ada
.Unchecked_Conversion
(System
.Address
, Thread_Body
);
241 type pthread_t
is private;
242 subtype Thread_Id
is pthread_t
;
244 type pthread_mutex_t
is limited private;
245 type pthread_cond_t
is limited private;
246 type pthread_attr_t
is limited private;
247 type pthread_mutexattr_t
is limited private;
248 type pthread_condattr_t
is limited private;
249 type pthread_key_t
is private;
255 function Get_Stack_Base
(thread
: pthread_t
) return Address
;
256 pragma Inline
(Get_Stack_Base
);
257 -- This is a dummy procedure to share some GNULLI files
259 ---------------------------------------
260 -- Nonstandard Thread Initialization --
261 ---------------------------------------
263 procedure pthread_init
;
264 pragma Inline
(pthread_init
);
265 -- This is a dummy procedure to share some GNULLI files
267 -------------------------
268 -- POSIX.1c Section 3 --
269 -------------------------
271 function sigwait
(set
: access sigset_t
) return int
;
272 pragma Import
(C
, sigwait
, "cma_sigwait");
275 (set
: access sigset_t
;
276 sig
: access Signal
) return int
;
277 pragma Inline
(sigwait
);
278 -- DCE_THREADS has a nonstandard sigwait
280 function pthread_kill
282 sig
: Signal
) return int
;
283 pragma Inline
(pthread_kill
);
284 -- DCE_THREADS doesn't have pthread_kill
286 function pthread_sigmask
288 set
: access sigset_t
;
289 oset
: access sigset_t
) return int
;
290 -- DCE THREADS does not have pthread_sigmask. Instead, it uses sigprocmask
291 -- to do the signal handling when the thread library is sucked in.
292 pragma Import
(C
, pthread_sigmask
, "sigprocmask");
294 --------------------------
295 -- POSIX.1c Section 11 --
296 --------------------------
298 function pthread_mutexattr_init
299 (attr
: access pthread_mutexattr_t
) return int
;
300 -- DCE_THREADS has a nonstandard pthread_mutexattr_init
302 function pthread_mutexattr_destroy
303 (attr
: access pthread_mutexattr_t
) return int
;
304 -- DCE_THREADS has a nonstandard pthread_mutexattr_destroy
306 function pthread_mutex_init
307 (mutex
: access pthread_mutex_t
;
308 attr
: access pthread_mutexattr_t
) return int
;
309 -- DCE_THREADS has a nonstandard pthread_mutex_init
311 function pthread_mutex_destroy
(mutex
: access pthread_mutex_t
) return int
;
312 -- DCE_THREADS has a nonstandard pthread_mutex_destroy
314 function pthread_mutex_lock
(mutex
: access pthread_mutex_t
) return int
;
315 pragma Inline
(pthread_mutex_lock
);
316 -- DCE_THREADS has nonstandard pthread_mutex_lock
318 function pthread_mutex_unlock
(mutex
: access pthread_mutex_t
) return int
;
319 pragma Inline
(pthread_mutex_unlock
);
320 -- DCE_THREADS has nonstandard pthread_mutex_lock
322 function pthread_condattr_init
323 (attr
: access pthread_condattr_t
) return int
;
324 -- DCE_THREADS has nonstandard pthread_condattr_init
326 function pthread_condattr_destroy
327 (attr
: access pthread_condattr_t
) return int
;
328 -- DCE_THREADS has nonstandard pthread_condattr_destroy
330 function pthread_cond_init
331 (cond
: access pthread_cond_t
;
332 attr
: access pthread_condattr_t
) return int
;
333 -- DCE_THREADS has nonstandard pthread_cond_init
335 function pthread_cond_destroy
(cond
: access pthread_cond_t
) return int
;
336 -- DCE_THREADS has nonstandard pthread_cond_destroy
338 function pthread_cond_signal
(cond
: access pthread_cond_t
) return int
;
339 pragma Inline
(pthread_cond_signal
);
340 -- DCE_THREADS has nonstandard pthread_cond_signal
342 function pthread_cond_wait
343 (cond
: access pthread_cond_t
;
344 mutex
: access pthread_mutex_t
) return int
;
345 pragma Inline
(pthread_cond_wait
);
346 -- DCE_THREADS has a nonstandard pthread_cond_wait
348 function pthread_cond_timedwait
349 (cond
: access pthread_cond_t
;
350 mutex
: access pthread_mutex_t
;
351 abstime
: access timespec
) return int
;
352 pragma Inline
(pthread_cond_timedwait
);
353 -- DCE_THREADS has a nonstandard pthread_cond_timedwait
355 --------------------------
356 -- POSIX.1c Section 13 --
357 --------------------------
359 type struct_sched_param
is record
360 sched_priority
: int
; -- scheduling priority
363 function pthread_setschedparam
366 param
: access struct_sched_param
) return int
;
367 pragma Inline
(pthread_setschedparam
);
368 -- DCE_THREADS has a nonstandard pthread_setschedparam
370 function sched_yield
return int
;
371 pragma Inline
(sched_yield
);
372 -- DCE_THREADS has a nonstandard sched_yield
374 ---------------------------
375 -- P1003.1c - Section 16 --
376 ---------------------------
378 function pthread_attr_init
(attributes
: access pthread_attr_t
) return int
;
379 pragma Inline
(pthread_attr_init
);
380 -- DCE_THREADS has a nonstandard pthread_attr_init
382 function pthread_attr_destroy
383 (attributes
: access pthread_attr_t
) return int
;
384 pragma Inline
(pthread_attr_destroy
);
385 -- DCE_THREADS has a nonstandard pthread_attr_destroy
387 function pthread_attr_setstacksize
388 (attr
: access pthread_attr_t
;
389 stacksize
: size_t
) return int
;
390 pragma Inline
(pthread_attr_setstacksize
);
391 -- DCE_THREADS has a nonstandard pthread_attr_setstacksize
393 function pthread_create
394 (thread
: access pthread_t
;
395 attributes
: access pthread_attr_t
;
396 start_routine
: Thread_Body
;
397 arg
: System
.Address
) return int
;
398 pragma Inline
(pthread_create
);
399 -- DCE_THREADS has a nonstandard pthread_create
401 procedure pthread_detach
(thread
: access pthread_t
);
402 pragma Import
(C
, pthread_detach
);
404 procedure pthread_exit
(status
: System
.Address
);
405 pragma Import
(C
, pthread_exit
, "pthread_exit");
407 function pthread_self
return pthread_t
;
408 pragma Import
(C
, pthread_self
, "pthread_self");
410 --------------------------
411 -- POSIX.1c Section 17 --
412 --------------------------
414 function pthread_setspecific
415 (key
: pthread_key_t
;
416 value
: System
.Address
) return int
;
417 pragma Inline
(pthread_setspecific
);
418 -- DCE_THREADS has a nonstandard pthread_setspecific
420 function pthread_getspecific
(key
: pthread_key_t
) return System
.Address
;
421 pragma Inline
(pthread_getspecific
);
422 -- DCE_THREADS has a nonstandard pthread_getspecific
424 type destructor_pointer
is access procedure (arg
: System
.Address
);
425 pragma Convention
(C
, destructor_pointer
);
427 function pthread_key_create
428 (key
: access pthread_key_t
;
429 destructor
: destructor_pointer
) return int
;
430 pragma Inline
(pthread_key_create
);
431 -- DCE_THREADS has a nonstandard pthread_key_create
435 type array_type_1
is array (Integer range 0 .. 7) of unsigned_long
;
436 type sigset_t
is record
437 X_X_sigbits
: array_type_1
;
439 pragma Convention
(C
, sigset_t
);
441 type pid_t
is new int
;
443 type time_t
is new long
;
445 type timespec
is record
449 pragma Convention
(C
, timespec
);
451 type clockid_t
is new int
;
452 CLOCK_REALTIME
: constant clockid_t
:= 1;
454 type cma_t_address
is new System
.Address
;
456 type cma_t_handle
is record
457 field1
: cma_t_address
;
458 field2
: Short_Integer;
459 field3
: Short_Integer;
461 for cma_t_handle
'Size use 64;
463 type pthread_attr_t
is new cma_t_handle
;
464 pragma Convention
(C_Pass_By_Copy
, pthread_attr_t
);
466 type pthread_condattr_t
is new cma_t_handle
;
467 pragma Convention
(C_Pass_By_Copy
, pthread_condattr_t
);
469 type pthread_mutexattr_t
is new cma_t_handle
;
470 pragma Convention
(C_Pass_By_Copy
, pthread_mutexattr_t
);
472 type pthread_t
is new cma_t_handle
;
473 pragma Convention
(C_Pass_By_Copy
, pthread_t
);
475 type pthread_mutex_t
is new cma_t_handle
;
476 pragma Convention
(C_Pass_By_Copy
, pthread_mutex_t
);
478 type pthread_cond_t
is new cma_t_handle
;
479 pragma Convention
(C_Pass_By_Copy
, pthread_cond_t
);
481 type pthread_key_t
is new int
;
483 end System
.OS_Interface
;