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1 706 jeremybenn
------------------------------------------------------------------------------
2
--                                                                          --
3
--                 GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS                 --
4
--                                                                          --
5
--                   S Y S T E M . O S _ I N T E R F A C E                  --
6
--                                                                          --
7
--                                  S p e c                                 --
8
--                                                                          --
9
--             Copyright (C) 1991-1994, Florida State University            --
10
--          Copyright (C) 1995-2011, Free Software Foundation, Inc.         --
11
--                                                                          --
12
-- GNAT 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 3,  or (at your option) any later ver- --
15
-- sion.  GNAT 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.                                     --
18
--                                                                          --
19
-- As a special exception under Section 7 of GPL version 3, you are granted --
20
-- additional permissions described in the GCC Runtime Library Exception,   --
21
-- version 3.1, as published by the Free Software Foundation.               --
22
--                                                                          --
23
-- You should have received a copy of the GNU General Public License and    --
24
-- a copy of the GCC Runtime Library Exception along with this program;     --
25
-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
26
-- <http://www.gnu.org/licenses/>.                                          --
27
--                                                                          --
28
-- GNARL was developed by the GNARL team at Florida State University.       --
29
-- Extensive contributions were provided by Ada Core Technologies, Inc.     --
30
--                                                                          --
31
------------------------------------------------------------------------------
32
 
33
--  This is a Solaris (native) version of this package
34
 
35
--  This package includes all direct interfaces to OS services
36
--  that are needed by the tasking run-time (libgnarl).
37
 
38
--  PLEASE DO NOT add any with-clauses to this package or remove the pragma
39
--  Preelaborate. This package is designed to be a bottom-level (leaf) package.
40
 
41
with Interfaces.C;
42
 
43
with Ada.Unchecked_Conversion;
44
 
45
package System.OS_Interface is
46
   pragma Preelaborate;
47
 
48
   pragma Linker_Options ("-lposix4");
49
   pragma Linker_Options ("-lthread");
50
 
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;
60
 
61
   -----------
62
   -- Errno --
63
   -----------
64
 
65
   function errno return int;
66
   pragma Import (C, errno, "__get_errno");
67
 
68
   EAGAIN    : constant := 11;
69
   EINTR     : constant := 4;
70
   EINVAL    : constant := 22;
71
   ENOMEM    : constant := 12;
72
   ETIME     : constant := 62;
73
   ETIMEDOUT : constant := 145;
74
 
75
   -------------
76
   -- Signals --
77
   -------------
78
 
79
   Max_Interrupt : constant := 45;
80
   type Signal is new int range 0 .. Max_Interrupt;
81
   for Signal'Size use int'Size;
82
 
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; --  thread cancellation signal (libthread)
122
 
123
   type Signal_Set is array (Natural range <>) of Signal;
124
 
125
   Unmasked : constant Signal_Set := (SIGTRAP, SIGLWP, SIGPROF);
126
 
127
   --  Following signals should not be disturbed.
128
   --  See c-posix-signals.c in FLORIST.
129
 
130
   Reserved : constant Signal_Set :=
131
     (SIGKILL, SIGSTOP, SIGWAITING, SIGCANCEL, SIGTRAP, SIGSEGV);
132
 
133
   type sigset_t is private;
134
 
135
   function sigaddset (set : access sigset_t; sig : Signal) return int;
136
   pragma Import (C, sigaddset, "sigaddset");
137
 
138
   function sigdelset (set : access sigset_t; sig : Signal) return int;
139
   pragma Import (C, sigdelset, "sigdelset");
140
 
141
   function sigfillset (set : access sigset_t) return int;
142
   pragma Import (C, sigfillset, "sigfillset");
143
 
144
   function sigismember (set : access sigset_t; sig : Signal) return int;
145
   pragma Import (C, sigismember, "sigismember");
146
 
147
   function sigemptyset (set : access sigset_t) return int;
148
   pragma Import (C, sigemptyset, "sigemptyset");
149
 
150
   type union_type_3 is new String (1 .. 116);
151
   type siginfo_t is record
152
      si_signo     : int;
153
      si_code      : int;
154
      si_errno     : int;
155
      X_data       : union_type_3;
156
   end record;
157
   pragma Convention (C, siginfo_t);
158
 
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
167
   --  be changed.
168
 
169
   type greg_t is new int;
170
 
171
   type gregset_t is array (0 .. 18) of greg_t;
172
 
173
   type union_type_2 is new String (1 .. 128);
174
   type record_type_1 is record
175
      fpu_fr       : union_type_2;
176
      fpu_q        : System.Address;
177
      fpu_fsr      : unsigned;
178
      fpu_qcnt     : unsigned_char;
179
      fpu_q_entrysize  : unsigned_char;
180
      fpu_en       : unsigned_char;
181
   end record;
182
   pragma Convention (C, record_type_1);
183
 
184
   type array_type_7 is array (Integer range 0 .. 20) of long;
185
   type mcontext_t is record
186
      gregs        : gregset_t;
187
      gwins        : System.Address;
188
      fpregs       : record_type_1;
189
      filler       : array_type_7;
190
   end record;
191
   pragma Convention (C, mcontext_t);
192
 
193
   type record_type_2 is record
194
      ss_sp        : System.Address;
195
      ss_size      : int;
196
      ss_flags     : int;
197
   end record;
198
   pragma Convention (C, record_type_2);
199
 
200
   type array_type_8 is array (Integer range 0 .. 22) of long;
201
   type ucontext_t is record
202
      uc_flags     : unsigned_long;
203
      uc_link      : System.Address;
204
      uc_sigmask   : sigset_t;
205
      uc_stack     : record_type_2;
206
      uc_mcontext  : mcontext_t;
207
      uc_filler    : array_type_8;
208
   end record;
209
   pragma Convention (C, ucontext_t);
210
 
211
   type Signal_Handler is access procedure
212
     (signo   : Signal;
213
      info    : access siginfo_t;
214
      context : access ucontext_t);
215
 
216
   type union_type_1 is new plain_char;
217
   type array_type_2 is array (Integer range 0 .. 1) of int;
218
   type struct_sigaction is record
219
      sa_flags   : int;
220
      sa_handler : System.Address;
221
      sa_mask    : sigset_t;
222
      sa_resv    : array_type_2;
223
   end record;
224
   pragma Convention (C, struct_sigaction);
225
   type struct_sigaction_ptr is access all struct_sigaction;
226
 
227
   SIG_BLOCK   : constant := 1;
228
   SIG_UNBLOCK : constant := 2;
229
   SIG_SETMASK : constant := 3;
230
 
231
   SIG_DFL : constant := 0;
232
   SIG_IGN : constant := 1;
233
 
234
   function sigaction
235
     (sig  : Signal;
236
      act  : struct_sigaction_ptr;
237
      oact : struct_sigaction_ptr) return int;
238
   pragma Import (C, sigaction, "sigaction");
239
 
240
   ----------
241
   -- Time --
242
   ----------
243
 
244
   type timespec is private;
245
 
246
   type clockid_t is new int;
247
 
248
   function clock_gettime
249
     (clock_id : clockid_t; tp : access timespec) return int;
250
   pragma Import (C, clock_gettime, "clock_gettime");
251
 
252
   function clock_getres
253
     (clock_id : clockid_t; res : access timespec) return int;
254
   pragma Import (C, clock_getres, "clock_getres");
255
 
256
   function To_Duration (TS : timespec) return Duration;
257
   pragma Inline (To_Duration);
258
 
259
   function To_Timespec (D : Duration) return timespec;
260
   pragma Inline (To_Timespec);
261
 
262
   -------------
263
   -- Process --
264
   -------------
265
 
266
   type pid_t is private;
267
 
268
   function kill (pid : pid_t; sig : Signal) return int;
269
   pragma Import (C, kill, "kill");
270
 
271
   function getpid return pid_t;
272
   pragma Import (C, getpid, "getpid");
273
 
274
   -------------
275
   -- Threads --
276
   -------------
277
 
278
   type Thread_Body is access
279
     function (arg : System.Address) return System.Address;
280
   pragma Convention (C, Thread_Body);
281
 
282
   function Thread_Body_Access is new
283
     Ada.Unchecked_Conversion (System.Address, Thread_Body);
284
 
285
   THR_DETACHED  : constant := 64;
286
   THR_BOUND     : constant := 1;
287
   THR_NEW_LWP   : constant := 2;
288
   USYNC_THREAD  : constant := 0;
289
 
290
   type thread_t is new unsigned;
291
   subtype Thread_Id is thread_t;
292
   --  These types should be commented ???
293
 
294
   function To_thread_t is new Ada.Unchecked_Conversion (Integer, thread_t);
295
 
296
   type mutex_t is limited private;
297
 
298
   type cond_t is limited private;
299
 
300
   type thread_key_t is private;
301
 
302
   function thr_create
303
     (stack_base    : System.Address;
304
      stack_size    : size_t;
305
      start_routine : Thread_Body;
306
      arg           : System.Address;
307
      flags         : int;
308
      new_thread    : access thread_t) return int;
309
   pragma Import (C, thr_create, "thr_create");
310
 
311
   function thr_min_stack return size_t;
312
   pragma Import (C, thr_min_stack, "thr_min_stack");
313
 
314
   function thr_self return thread_t;
315
   pragma Import (C, thr_self, "thr_self");
316
 
317
   function mutex_init
318
     (mutex : access mutex_t;
319
      mtype : int;
320
      arg   : System.Address) return int;
321
   pragma Import (C, mutex_init, "mutex_init");
322
 
323
   function mutex_destroy (mutex : access mutex_t) return int;
324
   pragma Import (C, mutex_destroy, "mutex_destroy");
325
 
326
   function mutex_lock (mutex : access mutex_t) return int;
327
   pragma Import (C, mutex_lock, "mutex_lock");
328
 
329
   function mutex_unlock (mutex : access mutex_t) return int;
330
   pragma Import (C, mutex_unlock, "mutex_unlock");
331
 
332
   function cond_init
333
     (cond  : access cond_t;
334
      ctype : int;
335
      arg   : int) return int;
336
   pragma Import (C, cond_init, "cond_init");
337
 
338
   function cond_wait
339
     (cond : access cond_t; mutex : access mutex_t) return int;
340
   pragma Import (C, cond_wait, "cond_wait");
341
 
342
   function cond_timedwait
343
     (cond    : access cond_t;
344
      mutex   : access mutex_t;
345
      abstime : access timespec) return int;
346
   pragma Import (C, cond_timedwait, "cond_timedwait");
347
 
348
   function cond_signal (cond : access cond_t) return int;
349
   pragma Import (C, cond_signal, "cond_signal");
350
 
351
   function cond_destroy (cond : access cond_t) return int;
352
   pragma Import (C, cond_destroy, "cond_destroy");
353
 
354
   function thr_setspecific
355
     (key : thread_key_t; value : System.Address) return int;
356
   pragma Import (C, thr_setspecific, "thr_setspecific");
357
 
358
   function thr_getspecific
359
     (key   : thread_key_t;
360
      value : access System.Address) return int;
361
   pragma Import (C, thr_getspecific, "thr_getspecific");
362
 
363
   function thr_keycreate
364
     (key : access thread_key_t; destructor : System.Address) return int;
365
   pragma Import (C, thr_keycreate, "thr_keycreate");
366
 
367
   function thr_setprio (thread : thread_t; priority : int) return int;
368
   pragma Import (C, thr_setprio, "thr_setprio");
369
 
370
   procedure thr_exit (status : System.Address);
371
   pragma Import (C, thr_exit, "thr_exit");
372
 
373
   function thr_setconcurrency (new_level : int) return int;
374
   pragma Import (C, thr_setconcurrency, "thr_setconcurrency");
375
 
376
   function sigwait (set : access sigset_t; sig : access Signal) return int;
377
   pragma Import (C, sigwait, "__posix_sigwait");
378
 
379
   function thr_kill (thread : thread_t; sig : Signal) return int;
380
   pragma Import (C, thr_kill, "thr_kill");
381
 
382
   function thr_sigsetmask
383
     (how  : int;
384
      set  : access sigset_t;
385
      oset : access sigset_t) return int;
386
   pragma Import (C, thr_sigsetmask, "thr_sigsetmask");
387
 
388
   function pthread_sigmask
389
     (how  : int;
390
      set  : access sigset_t;
391
      oset : access sigset_t) return int;
392
   pragma Import (C, pthread_sigmask, "thr_sigsetmask");
393
 
394
   function thr_suspend (target_thread : thread_t) return int;
395
   pragma Import (C, thr_suspend, "thr_suspend");
396
 
397
   function thr_continue (target_thread : thread_t) return int;
398
   pragma Import (C, thr_continue, "thr_continue");
399
 
400
   procedure thr_yield;
401
   pragma Import (C, thr_yield, "thr_yield");
402
 
403
   ---------
404
   -- LWP --
405
   ---------
406
 
407
   P_PID   : constant := 0;
408
   P_LWPID : constant := 8;
409
 
410
   PC_GETCID    : constant := 0;
411
   PC_GETCLINFO : constant := 1;
412
   PC_SETPARMS  : constant := 2;
413
   PC_GETPARMS  : constant := 3;
414
   PC_ADMIN     : constant := 4;
415
 
416
   PC_CLNULL : constant := -1;
417
 
418
   RT_NOCHANGE : constant := -1;
419
   RT_TQINF    : constant := -2;
420
   RT_TQDEF    : constant := -3;
421
 
422
   PC_CLNMSZ : constant := 16;
423
 
424
   PC_VERSION : constant := 1;
425
 
426
   type lwpid_t is new int;
427
 
428
   type pri_t is new short;
429
 
430
   type id_t is new long;
431
 
432
   P_MYID : constant := -1;
433
   --  The specified LWP or process is the current one
434
 
435
   type struct_pcinfo is record
436
      pc_cid    : id_t;
437
      pc_clname : String (1 .. PC_CLNMSZ);
438
      rt_maxpri : short;
439
   end record;
440
   pragma Convention (C, struct_pcinfo);
441
 
442
   type struct_pcparms is record
443
      pc_cid     : id_t;
444
      rt_pri     : pri_t;
445
      rt_tqsecs  : long;
446
      rt_tqnsecs : long;
447
   end record;
448
   pragma Convention (C, struct_pcparms);
449
 
450
   function priocntl
451
     (ver     : int;
452
      id_type : int;
453
      id      : lwpid_t;
454
      cmd     : int;
455
      arg     : System.Address) return Interfaces.C.long;
456
   pragma Import (C, priocntl, "__priocntl");
457
 
458
   function lwp_self return lwpid_t;
459
   pragma Import (C, lwp_self, "_lwp_self");
460
 
461
   type processorid_t is new int;
462
   type processorid_t_ptr is access all processorid_t;
463
 
464
   --  Constants for function processor_bind
465
 
466
   PBIND_QUERY : constant processorid_t := -2;
467
   --  The processor bindings are not changed
468
 
469
   PBIND_NONE  : constant processorid_t := -1;
470
   --  The processor bindings of the specified LWPs are cleared
471
 
472
   --  Flags for function p_online
473
 
474
   PR_OFFLINE : constant int := 1;
475
   --  Processor is offline, as quiet as possible
476
 
477
   PR_ONLINE  : constant int := 2;
478
   --  Processor online
479
 
480
   PR_STATUS  : constant int := 3;
481
   --  Value passed to p_online to request status
482
 
483
   function p_online (processorid : processorid_t; flag : int) return int;
484
   pragma Import (C, p_online, "p_online");
485
 
486
   function processor_bind
487
     (id_type : int;
488
      id      : id_t;
489
      proc_id : processorid_t;
490
      obind   : processorid_t_ptr) return int;
491
   pragma Import (C, processor_bind, "processor_bind");
492
 
493
   type psetid_t is new int;
494
 
495
   function pset_create (pset : access psetid_t) return int;
496
   pragma Import (C, pset_create, "pset_create");
497
 
498
   function pset_assign
499
     (pset    : psetid_t;
500
      proc_id : processorid_t;
501
      opset   : access psetid_t) return int;
502
   pragma Import (C, pset_assign, "pset_assign");
503
 
504
   function pset_bind
505
     (pset    : psetid_t;
506
      id_type : int;
507
      id      : id_t;
508
      opset   : access psetid_t) return int;
509
   pragma Import (C, pset_bind, "pset_bind");
510
 
511
   procedure pthread_init;
512
   --  Dummy procedure to share s-intman.adb with other Solaris targets
513
 
514
private
515
 
516
   type array_type_1 is array (0 .. 3) of unsigned_long;
517
   type sigset_t is record
518
      X_X_sigbits : array_type_1;
519
   end record;
520
   pragma Convention (C, sigset_t);
521
 
522
   type pid_t is new long;
523
 
524
   type time_t is new long;
525
 
526
   type timespec is record
527
      tv_sec  : time_t;
528
      tv_nsec : long;
529
   end record;
530
   pragma Convention (C, timespec);
531
 
532
   type array_type_9 is array (0 .. 3) of unsigned_char;
533
   type record_type_3 is record
534
      flag  : array_type_9;
535
      Xtype : unsigned_long;
536
   end record;
537
   pragma Convention (C, record_type_3);
538
 
539
   type mutex_t is record
540
      flags : record_type_3;
541
      lock  : String (1 .. 8);
542
      data  : String (1 .. 8);
543
   end record;
544
   pragma Convention (C, mutex_t);
545
 
546
   type cond_t is record
547
      flag  : array_type_9;
548
      Xtype : unsigned_long;
549
      data  : String (1 .. 8);
550
   end record;
551
   pragma Convention (C, cond_t);
552
 
553
   type thread_key_t is new unsigned;
554
 
555
end System.OS_Interface;

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