1------------------------------------------------------------------------------
2--                                                                          --
3--                GNU ADA 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) 1991-2002 Free Software Foundation, Inc.         --
10--                                                                          --
11-- GNARL is free software; you can  redistribute it  and/or modify it under --
12-- terms of the  GNU General Public License as published  by the Free Soft- --
13-- ware  Foundation;  either version 2,  or (at your option) any later ver- --
14-- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
15-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
16-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
17-- for  more details.  You should have  received  a copy of the GNU General --
18-- Public License  distributed with GNARL; see file COPYING.  If not, write --
19-- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
20-- MA 02111-1307, USA.                                                      --
21--                                                                          --
22-- As a special exception,  if other files  instantiate  generics from this --
23-- unit, or you link  this unit with other files  to produce an executable, --
24-- this  unit  does not  by itself cause  the resulting  executable  to  be --
25-- covered  by the  GNU  General  Public  License.  This exception does not --
26-- however invalidate  any other reasons why  the executable file  might be --
27-- covered by the  GNU Public License.                                      --
28--                                                                          --
29-- GNARL was developed by the GNARL team at Florida State University.       --
30-- Extensive contributions were provided by Ada Core Technologies, Inc.     --
31--                                                                          --
32------------------------------------------------------------------------------
33
34--  This is a OpenVMS/Alpha version of this package.
35
36--  This package encapsulates all direct interfaces to OS services
37--  that are needed by children of System.
38
39--  PLEASE DO NOT add any with-clauses to this package
40--  or remove the pragma Elaborate_Body.
41--  It is designed to be a bottom-level (leaf) package.
42
43with Interfaces.C;
44package System.OS_Interface is
45   pragma Preelaborate;
46
47   pragma Linker_Options ("--for-linker=sys$library:pthread$rtl.exe");
48   --  Link in the DEC threads library.
49
50   --  pragma Linker_Options ("--for-linker=/threads_enable");
51   --  Enable upcalls and multiple kernel threads.
52
53   subtype int            is Interfaces.C.int;
54   subtype short          is Interfaces.C.short;
55   subtype long           is Interfaces.C.long;
56   subtype unsigned       is Interfaces.C.unsigned;
57   subtype unsigned_short is Interfaces.C.unsigned_short;
58   subtype unsigned_long  is Interfaces.C.unsigned_long;
59   subtype unsigned_char  is Interfaces.C.unsigned_char;
60   subtype plain_char     is Interfaces.C.plain_char;
61   subtype size_t         is Interfaces.C.size_t;
62
63   -----------------------------
64   -- Signals (Interrupt IDs) --
65   -----------------------------
66
67   --  Type signal has an arbitrary limit of 31
68
69   Max_Interrupt : constant := 31;
70   type Signal is new unsigned range 0 .. Max_Interrupt;
71   for Signal'Size use unsigned'Size;
72
73   type sigset_t is array (Signal) of Boolean;
74   pragma Pack (sigset_t);
75
76   --  Interrupt_Number_Type
77   --  Unsigned long integer denoting the number of an interrupt
78
79   subtype Interrupt_Number_Type is unsigned_long;
80
81   --  OpenVMS system services return values of type Cond_Value_Type.
82
83   subtype Cond_Value_Type is unsigned_long;
84   subtype Short_Cond_Value_Type is unsigned_short;
85
86   type IO_Status_Block_Type is record
87      Status   : Short_Cond_Value_Type;
88      Count    : unsigned_short;
89      Dev_Info : unsigned_long;
90   end record;
91
92   type AST_Handler is access procedure (Param : Address);
93   No_AST_Handler : constant AST_Handler := null;
94
95   CMB_M_READONLY  : constant := 16#00000001#;
96   CMB_M_WRITEONLY : constant := 16#00000002#;
97   AGN_M_READONLY  : constant := 16#00000001#;
98   AGN_M_WRITEONLY : constant := 16#00000002#;
99
100   IO_WRITEVBLK : constant := 48;  --  WRITE VIRTUAL BLOCK
101   IO_READVBLK  : constant := 49;  --  READ VIRTUAL BLOCK
102
103   ----------------
104   -- Sys_Assign --
105   ----------------
106   --
107   --  Assign I/O Channel
108   --
109   --  Status = returned status
110   --  Devnam = address  of  device  name  or  logical  name   string
111   --               descriptor
112   --  Chan   = address of word to receive channel number assigned
113   --  Acmode = access mode associated with channel
114   --  Mbxnam = address of mailbox logical name string descriptor, if
115   --               mailbox associated with device
116   --  Flags  = optional channel flags longword for specifying options
117   --           for the $ASSIGN operation
118   --
119
120   procedure Sys_Assign
121     (Status : out Cond_Value_Type;
122      Devnam : in String;
123      Chan   : out unsigned_short;
124      Acmode : in unsigned_short := 0;
125      Mbxnam : in String := String'Null_Parameter;
126      Flags  : in unsigned_long := 0);
127   pragma Interface (External, Sys_Assign);
128   pragma Import_Valued_Procedure
129     (Sys_Assign, "SYS$ASSIGN",
130      (Cond_Value_Type, String,         unsigned_short,
131       unsigned_short,  String,         unsigned_long),
132      (Value,           Descriptor (s), Reference,
133       Value,           Descriptor (s), Value),
134      Flags);
135
136   ----------------
137   -- Sys_Cantim --
138   ----------------
139   --
140   --  Cancel Timer
141   --
142   --  Status  = returned status
143   --  Reqidt  = ID of timer to be cancelled
144   --  Acmode  = Access mode
145   --
146   procedure Sys_Cantim
147     (Status : out Cond_Value_Type;
148      Reqidt : in Address;
149      Acmode : in unsigned);
150   pragma Interface (External, Sys_Cantim);
151   pragma Import_Valued_Procedure
152     (Sys_Cantim, "SYS$CANTIM",
153      (Cond_Value_Type, Address, unsigned),
154      (Value,           Value,   Value));
155
156   ----------------
157   -- Sys_Crembx --
158   ----------------
159   --
160   --  Create mailbox
161   --
162   --     Status  = returned status
163   --     Prmflg  = permanent flag
164   --     Chan    = channel
165   --     Maxmsg  = maximum message
166   --     Bufquo  = buufer quote
167   --     Promsk  = protection mast
168   --     Acmode  = access mode
169   --     Lognam  = logical name
170   --     Flags   = flags
171   --
172   procedure Sys_Crembx
173     (Status : out Cond_Value_Type;
174      Prmflg : in Boolean;
175      Chan   : out unsigned_short;
176      Maxmsg : in unsigned_long := 0;
177      Bufquo : in unsigned_long := 0;
178      Promsk : in unsigned_short := 0;
179      Acmode : in unsigned_short := 0;
180      Lognam : in String;
181      Flags  : in unsigned_long := 0);
182   pragma Interface (External, Sys_Crembx);
183   pragma Import_Valued_Procedure
184     (Sys_Crembx, "SYS$CREMBX",
185      (Cond_Value_Type, Boolean,        unsigned_short,
186       unsigned_long,   unsigned_long,  unsigned_short,
187       unsigned_short,  String,         unsigned_long),
188      (Value,           Value,          Reference,
189       Value,           Value,          Value,
190       Value,           Descriptor (s), Value));
191
192   -------------
193   -- Sys_QIO --
194   -------------
195   --
196   --    Queue I/O
197   --
198   --     Status = Returned status of call
199   --     EFN    = event flag to be set when I/O completes
200   --     Chan   = channel
201   --     Func   = function
202   --     Iosb   = I/O status block
203   --     Astadr = system trap to be generated when I/O completes
204   --     Astprm = AST parameter
205   --     P1-6   = optional parameters
206
207   procedure Sys_QIO
208     (Status : out Cond_Value_Type;
209      EFN    : in unsigned_long := 0;
210      Chan   : in unsigned_short;
211      Func   : in unsigned_long := 0;
212      Iosb   : out IO_Status_Block_Type;
213      Astadr : in AST_Handler := No_AST_Handler;
214      Astprm : in Address := Null_Address;
215      P1     : in  unsigned_long := 0;
216      P2     : in  unsigned_long := 0;
217      P3     : in  unsigned_long := 0;
218      P4     : in  unsigned_long := 0;
219      P5     : in  unsigned_long := 0;
220      P6     : in  unsigned_long := 0);
221
222   procedure Sys_QIO
223     (Status : out Cond_Value_Type;
224      EFN    : in unsigned_long := 0;
225      Chan   : in unsigned_short;
226      Func   : in unsigned_long := 0;
227      Iosb   : in Address := Null_Address;
228      Astadr : in AST_Handler := No_AST_Handler;
229      Astprm : in Address := Null_Address;
230      P1     : in  unsigned_long := 0;
231      P2     : in  unsigned_long := 0;
232      P3     : in  unsigned_long := 0;
233      P4     : in  unsigned_long := 0;
234      P5     : in  unsigned_long := 0;
235      P6     : in  unsigned_long := 0);
236
237   pragma Interface (External, Sys_QIO);
238   pragma Import_Valued_Procedure
239     (Sys_QIO, "SYS$QIO",
240      (Cond_Value_Type,      unsigned_long, unsigned_short, unsigned_long,
241       IO_Status_Block_Type, AST_Handler,   Address,
242       unsigned_long,        unsigned_long, unsigned_long,
243       unsigned_long,        unsigned_long, unsigned_long),
244      (Value,                Value,         Value,          Value,
245       Reference,            Value,         Value,
246       Value,                Value,         Value,
247       Value,                Value,         Value));
248
249   pragma Import_Valued_Procedure
250     (Sys_QIO, "SYS$QIO",
251      (Cond_Value_Type, unsigned_long, unsigned_short, unsigned_long,
252       Address,         AST_Handler,   Address,
253       unsigned_long,   unsigned_long, unsigned_long,
254       unsigned_long,   unsigned_long, unsigned_long),
255      (Value,           Value,         Value,          Value,
256       Value,           Value,         Value,
257       Value,           Value,         Value,
258       Value,           Value,         Value));
259
260   ----------------
261   -- Sys_Setimr --
262   ----------------
263   --
264   --    Set Timer
265   --
266   --     Status = Returned status of call
267   --     EFN    = event flag to be set when timer expires
268   --     Tim    = expiration time
269   --     AST    = system trap to be generated when timer expires
270   --     Redidt = returned ID of timer (e.g. to cancel timer)
271   --     Flags  = flags
272   --
273   procedure Sys_Setimr
274     (Status : out Cond_Value_Type;
275      EFN    : in unsigned_long;
276      Tim    : in Long_Integer;
277      AST    : in AST_Handler;
278      Reqidt : in Address;
279      Flags  : in unsigned_long);
280   pragma Interface (External, Sys_Setimr);
281   pragma Import_Valued_Procedure
282     (Sys_Setimr, "SYS$SETIMR",
283      (Cond_Value_Type, unsigned_long,     Long_Integer,
284       AST_Handler,     Address,           unsigned_long),
285      (Value,           Value,             Reference,
286       Value,           Value,             Value));
287
288   Interrupt_ID_0   : constant  := 0;
289   Interrupt_ID_1   : constant  := 1;
290   Interrupt_ID_2   : constant  := 2;
291   Interrupt_ID_3   : constant  := 3;
292   Interrupt_ID_4   : constant  := 4;
293   Interrupt_ID_5   : constant  := 5;
294   Interrupt_ID_6   : constant  := 6;
295   Interrupt_ID_7   : constant  := 7;
296   Interrupt_ID_8   : constant  := 8;
297   Interrupt_ID_9   : constant  := 9;
298   Interrupt_ID_10  : constant  := 10;
299   Interrupt_ID_11  : constant  := 11;
300   Interrupt_ID_12  : constant  := 12;
301   Interrupt_ID_13  : constant  := 13;
302   Interrupt_ID_14  : constant  := 14;
303   Interrupt_ID_15  : constant  := 15;
304   Interrupt_ID_16  : constant  := 16;
305   Interrupt_ID_17  : constant  := 17;
306   Interrupt_ID_18  : constant  := 18;
307   Interrupt_ID_19  : constant  := 19;
308   Interrupt_ID_20  : constant  := 20;
309   Interrupt_ID_21  : constant  := 21;
310   Interrupt_ID_22  : constant  := 22;
311   Interrupt_ID_23  : constant  := 23;
312   Interrupt_ID_24  : constant  := 24;
313   Interrupt_ID_25  : constant  := 25;
314   Interrupt_ID_26  : constant  := 26;
315   Interrupt_ID_27  : constant  := 27;
316   Interrupt_ID_28  : constant  := 28;
317   Interrupt_ID_29  : constant  := 29;
318   Interrupt_ID_30  : constant  := 30;
319   Interrupt_ID_31  : constant  := 31;
320
321   -----------
322   -- Errno --
323   -----------
324
325   function errno return int;
326   pragma Import (C, errno, "__get_errno");
327
328   EINTR  : constant := 4;   --  Interrupted system call
329   EAGAIN : constant := 11;  --  No more processes
330   ENOMEM : constant := 12;  --  Not enough core
331
332   -------------------------
333   -- Priority Scheduling --
334   -------------------------
335
336   SCHED_FIFO  : constant := 1;
337   SCHED_RR    : constant := 2;
338   SCHED_OTHER : constant := 3;
339   SCHED_BG    : constant := 4;
340   SCHED_LFI   : constant := 5;
341   SCHED_LRR   : constant := 6;
342
343   -------------
344   -- Process --
345   -------------
346
347   type pid_t is private;
348
349   function kill (pid : pid_t; sig : Signal) return int;
350   pragma Import (C, kill);
351
352   function getpid return pid_t;
353   pragma Import (C, getpid);
354
355   -------------
356   -- Threads --
357   -------------
358
359   type Thread_Body is access
360     function (arg : System.Address) return System.Address;
361   type pthread_t           is private;
362   subtype Thread_Id        is pthread_t;
363
364   type pthread_mutex_t     is limited private;
365   type pthread_cond_t      is limited private;
366   type pthread_attr_t      is limited private;
367   type pthread_mutexattr_t is limited private;
368   type pthread_condattr_t  is limited private;
369   type pthread_key_t       is private;
370
371   PTHREAD_CREATE_JOINABLE     : constant := 0;
372   PTHREAD_CREATE_DETACHED     : constant := 1;
373
374   PTHREAD_CANCEL_DISABLE      : constant := 0;
375   PTHREAD_CANCEL_ENABLE       : constant := 1;
376
377   PTHREAD_CANCEL_DEFERRED     : constant := 0;
378   PTHREAD_CANCEL_ASYNCHRONOUS : constant := 1;
379
380   --  Don't use ERRORCHECK mutexes, they don't work when a thread is not
381   --  the owner.  AST's, at least, unlock others threads mutexes. Even
382   --  if the error is ignored, they don't work.
383   PTHREAD_MUTEX_NORMAL_NP     : constant := 0;
384   PTHREAD_MUTEX_RECURSIVE_NP  : constant := 1;
385   PTHREAD_MUTEX_ERRORCHECK_NP : constant := 2;
386
387   PTHREAD_INHERIT_SCHED       : constant := 0;
388   PTHREAD_EXPLICIT_SCHED      : constant := 1;
389
390   function pthread_cancel (thread : pthread_t) return int;
391   pragma Import (C, pthread_cancel, "PTHREAD_CANCEL");
392
393   procedure pthread_testcancel;
394   pragma Import (C, pthread_testcancel, "PTHREAD_TESTCANCEL");
395
396   function pthread_setcancelstate
397     (newstate : int; oldstate : access int) return int;
398   pragma Import (C, pthread_setcancelstate, "PTHREAD_SETCANCELSTATE");
399
400   function pthread_setcanceltype
401     (newtype : int; oldtype : access int) return int;
402   pragma Import (C, pthread_setcanceltype, "PTHREAD_SETCANCELTYPE");
403
404   ---------------------------
405   --  POSIX.1c  Section 3  --
406   ---------------------------
407
408   function pthread_lock_global_np return int;
409   pragma Import (C, pthread_lock_global_np, "PTHREAD_LOCK_GLOBAL_NP");
410
411   function pthread_unlock_global_np return int;
412   pragma Import (C, pthread_unlock_global_np, "PTHREAD_UNLOCK_GLOBAL_NP");
413
414   ----------------------------
415   --  POSIX.1c  Section 11  --
416   ----------------------------
417
418   function pthread_mutexattr_init
419     (attr : access pthread_mutexattr_t) return int;
420   pragma Import (C, pthread_mutexattr_init, "PTHREAD_MUTEXATTR_INIT");
421
422   function pthread_mutexattr_destroy
423     (attr : access pthread_mutexattr_t) return int;
424   pragma Import (C, pthread_mutexattr_destroy, "PTHREAD_MUTEXATTR_DESTROY");
425
426   function pthread_mutexattr_settype_np
427     (attr      : access pthread_mutexattr_t;
428      mutextype : int) return int;
429   pragma Import (C, pthread_mutexattr_settype_np,
430                     "PTHREAD_MUTEXATTR_SETTYPE_NP");
431
432   function pthread_mutex_init
433     (mutex : access pthread_mutex_t;
434      attr  : access pthread_mutexattr_t) return int;
435   pragma Import (C, pthread_mutex_init, "PTHREAD_MUTEX_INIT");
436
437   function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
438   pragma Import (C, pthread_mutex_destroy, "PTHREAD_MUTEX_DESTROY");
439
440   function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
441   pragma Import (C, pthread_mutex_lock, "PTHREAD_MUTEX_LOCK");
442
443   function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
444   pragma Import (C, pthread_mutex_unlock, "PTHREAD_MUTEX_UNLOCK");
445
446   function pthread_condattr_init
447     (attr : access pthread_condattr_t) return int;
448   pragma Import (C, pthread_condattr_init, "PTHREAD_CONDATTR_INIT");
449
450   function pthread_condattr_destroy
451     (attr : access pthread_condattr_t) return int;
452   pragma Import (C, pthread_condattr_destroy, "PTHREAD_CONDATTR_DESTROY");
453
454   function pthread_cond_init
455     (cond : access pthread_cond_t;
456      attr : access pthread_condattr_t) return int;
457   pragma Import (C, pthread_cond_init, "PTHREAD_COND_INIT");
458
459   function pthread_cond_destroy (cond : access pthread_cond_t) return int;
460   pragma Import (C, pthread_cond_destroy, "PTHREAD_COND_DESTROY");
461
462   function pthread_cond_signal (cond : access pthread_cond_t) return int;
463   pragma Import (C, pthread_cond_signal, "PTHREAD_COND_SIGNAL");
464
465   function pthread_cond_signal_int_np
466     (cond : access pthread_cond_t) return int;
467   pragma Import (C, pthread_cond_signal_int_np,
468                  "PTHREAD_COND_SIGNAL_INT_NP");
469
470   function pthread_cond_wait
471     (cond  : access pthread_cond_t;
472      mutex : access pthread_mutex_t) return int;
473   pragma Import (C, pthread_cond_wait, "PTHREAD_COND_WAIT");
474
475   --------------------------
476   -- POSIX.1c  Section 13 --
477   --------------------------
478
479   function pthread_mutexattr_setprotocol
480     (attr : access pthread_mutexattr_t; protocol : int) return int;
481   pragma Import (C, pthread_mutexattr_setprotocol,
482                     "PTHREAD_MUTEXATTR_SETPROTOCOL");
483
484   type struct_sched_param is record
485      sched_priority : int;  --  scheduling priority
486   end record;
487   for struct_sched_param'Size use 8*4;
488   pragma Convention (C, struct_sched_param);
489
490   function pthread_setschedparam
491     (thread : pthread_t;
492      policy : int;
493      param  : access struct_sched_param) return int;
494   pragma Import (C, pthread_setschedparam, "PTHREAD_SETSCHEDPARAM");
495
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");
500
501   function pthread_attr_setinheritsched
502     (attr            : access pthread_attr_t;
503      inheritsched : int) return int;
504   pragma Import (C, pthread_attr_setinheritsched,
505                     "PTHREAD_ATTR_SETINHERITSCHED");
506
507   function pthread_attr_setschedpolicy
508     (attr : access pthread_attr_t; policy : int) return int;
509   pragma Import (C, pthread_attr_setschedpolicy,
510                     "PTHREAD_ATTR_SETSCHEDPOLICY");
511
512   function pthread_attr_setschedparam
513     (attr        : access pthread_attr_t;
514      sched_param : int) return int;
515   pragma Import (C, pthread_attr_setschedparam, "PTHREAD_ATTR_SETSCHEDPARAM");
516
517   function sched_yield return int;
518
519   -----------------------------
520   --  P1003.1c - Section 16  --
521   -----------------------------
522
523   function pthread_attr_init (attributes : access pthread_attr_t) return int;
524   pragma Import (C, pthread_attr_init, "PTHREAD_ATTR_INIT");
525
526   function pthread_attr_destroy
527     (attributes : access pthread_attr_t) return int;
528   pragma Import (C, pthread_attr_destroy, "PTHREAD_ATTR_DESTROY");
529
530   function pthread_attr_setdetachstate
531     (attr        : access pthread_attr_t;
532      detachstate : int) return int;
533   pragma Import (C, pthread_attr_setdetachstate,
534                     "PTHREAD_ATTR_SETDETACHSTATE");
535
536   function pthread_attr_setstacksize
537     (attr      : access pthread_attr_t;
538      stacksize : size_t) return int;
539   pragma Import (C, pthread_attr_setstacksize, "PTHREAD_ATTR_SETSTACKSIZE");
540
541   function pthread_create
542     (thread        : access pthread_t;
543      attributes    : access pthread_attr_t;
544      start_routine : Thread_Body;
545      arg           : System.Address) return int;
546   pragma Import (C, pthread_create, "PTHREAD_CREATE");
547
548   procedure pthread_exit (status : System.Address);
549   pragma Import (C, pthread_exit, "PTHREAD_EXIT");
550
551   function pthread_self return pthread_t;
552
553   --------------------------
554   -- POSIX.1c  Section 17 --
555   --------------------------
556
557   function pthread_setspecific
558     (key   : pthread_key_t;
559      value : System.Address) return  int;
560   pragma Import (C, pthread_setspecific, "PTHREAD_SETSPECIFIC");
561
562   function pthread_getspecific (key : pthread_key_t) return System.Address;
563   pragma Import (C, pthread_getspecific, "PTHREAD_GETSPECIFIC");
564
565   type destructor_pointer is access procedure (arg : System.Address);
566
567   function pthread_key_create
568     (key        : access pthread_key_t;
569      destructor : destructor_pointer) return int;
570   pragma Import (C, pthread_key_create, "PTHREAD_KEY_CREATE");
571
572private
573
574   type pid_t is new int;
575
576   type pthreadLongAddr_p is mod 2 ** Long_Integer'Size;
577
578   type pthreadLongAddr_t is mod 2 ** Long_Integer'Size;
579   type pthreadLongAddr_t_ptr is mod 2 ** Long_Integer'Size;
580
581   type pthreadLongString_t is mod 2 ** Long_Integer'Size;
582
583   type pthreadLongUint_t is mod 2 ** Long_Integer'Size;
584   type pthreadLongUint_array is array (Natural range <>)
585     of pthreadLongUint_t;
586
587   type pthread_t is mod 2 ** Long_Integer'Size;
588
589   type pthread_cond_t is record
590      state    : unsigned;
591      valid    : unsigned;
592      name     : pthreadLongString_t;
593      arg      : unsigned;
594      sequence : unsigned;
595      block    : pthreadLongAddr_t_ptr;
596   end record;
597   for pthread_cond_t'Size use 8*32;
598   pragma Convention (C, pthread_cond_t);
599
600   type pthread_attr_t is record
601      valid    : long;
602      name     : pthreadLongString_t;
603      arg      : pthreadLongUint_t;
604      reserved : pthreadLongUint_array (0 .. 18);
605   end record;
606   for pthread_attr_t'Size use 8*176;
607   pragma Convention (C, pthread_attr_t);
608
609   type pthread_mutex_t is record
610      lock     : unsigned;
611      valid    : unsigned;
612      name     : pthreadLongString_t;
613      arg      : unsigned;
614      sequence : unsigned;
615      block    : pthreadLongAddr_p;
616      owner    : unsigned;
617      depth    : unsigned;
618   end record;
619   for pthread_mutex_t'Size use 8*40;
620   pragma Convention (C, pthread_mutex_t);
621
622   type pthread_mutexattr_t is record
623      valid    : long;
624      reserved : pthreadLongUint_array (0 .. 14);
625   end record;
626   for pthread_mutexattr_t'Size use 8*128;
627   pragma Convention (C, pthread_mutexattr_t);
628
629   type pthread_condattr_t is record
630      valid    : long;
631      reserved : pthreadLongUint_array (0 .. 12);
632   end record;
633   for pthread_condattr_t'Size use 8*112;
634   pragma Convention (C, pthread_condattr_t);
635
636   type pthread_key_t is new unsigned;
637
638   pragma Inline (pthread_self);
639
640end System.OS_Interface;
641