gcc/ada/s-osinte-vms.ads

   1 ------------------------------------------------------------------------------
   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) 1995-2008, Free Software Foundation, Inc.         --
  11 --                                                                          --
  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.                                              --
  22 --                                                                          --
  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.                                      --
  29 --                                                                          --
  30 -- GNARL was developed by the GNARL team at Florida State University.       --
  31 -- Extensive contributions were provided by Ada Core Technologies, Inc.     --
  32 --                                                                          --
  33 ------------------------------------------------------------------------------
  34
  35 --  This is a OpenVMS/Alpha version of this package
  36
  37 --  This package encapsulates all direct interfaces to OS services
  38 --  that are needed by the tasking run-time (libgnarl).
  39
  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.
  42
  43 with Interfaces.C;
  44
  45 with Ada.Unchecked_Conversion;
  46
  47 with System.Aux_DEC;
  48
  49 package System.OS_Interface is
  50    pragma Preelaborate;
  51
  52    pragma Linker_Options ("--for-linker=sys$library:pthread$rtl.exe");
  53    --  Link in the DEC threads library
  54
  55    --  pragma Linker_Options ("--for-linker=/threads_enable");
  56    --  Enable upcalls and multiple kernel threads.
  57
  58    subtype int            is Interfaces.C.int;
  59    subtype short          is Interfaces.C.short;
  60    subtype long           is Interfaces.C.long;
  61    subtype unsigned       is Interfaces.C.unsigned;
  62    subtype unsigned_short is Interfaces.C.unsigned_short;
  63    subtype unsigned_long  is Interfaces.C.unsigned_long;
  64    subtype unsigned_char  is Interfaces.C.unsigned_char;
  65    subtype plain_char     is Interfaces.C.plain_char;
  66    subtype size_t         is Interfaces.C.size_t;
  67
  68    -----------------------------
  69    -- Signals (Interrupt IDs) --
  70    -----------------------------
  71
  72    --  Type signal has an arbitrary limit of 31
  73
  74    Max_Interrupt : constant := 31;
  75    type Signal is new unsigned range 0 .. Max_Interrupt;
  76    for Signal'Size use unsigned'Size;
  77
  78    type sigset_t is array (Signal) of Boolean;
  79    pragma Pack (sigset_t);
  80
  81    --  Interrupt_Number_Type
  82    --  Unsigned long integer denoting the number of an interrupt
  83
  84    subtype Interrupt_Number_Type is unsigned_long;
  85
  86    --  OpenVMS system services return values of type Cond_Value_Type
  87
  88    subtype Cond_Value_Type is unsigned_long;
  89    subtype Short_Cond_Value_Type is unsigned_short;
  90
  91    type IO_Status_Block_Type is record
  92       Status   : Short_Cond_Value_Type;
  93       Count    : unsigned_short;
  94       Dev_Info : unsigned_long;
  95    end record;
  96
  97    type AST_Handler is access procedure (Param : Address);
  98    pragma Convention (C, AST_Handler);
  99    No_AST_Handler : constant AST_Handler := null;
 100
 101    CMB_M_READONLY  : constant := 16#00000001#;
 102    CMB_M_WRITEONLY : constant := 16#00000002#;
 103    AGN_M_READONLY  : constant := 16#00000001#;
 104    AGN_M_WRITEONLY : constant := 16#00000002#;
 105
 106    IO_WRITEVBLK : constant := 48;  --  WRITE VIRTUAL BLOCK
 107    IO_READVBLK  : constant := 49;  --  READ VIRTUAL BLOCK
 108
 109    ----------------
 110    -- Sys_Assign --
 111    ----------------
 112    --
 113    --  Assign I/O Channel
 114    --
 115    --  Status = returned status
 116    --  Devnam = address  of  device  name  or  logical  name   string
 117    --               descriptor
 118    --  Chan   = address of word to receive channel number assigned
 119    --  Acmode = access mode associated with channel
 120    --  Mbxnam = address of mailbox logical name string descriptor, if
 121    --               mailbox associated with device
 122    --  Flags  = optional channel flags longword for specifying options
 123    --           for the $ASSIGN operation
 124    --
 125
 126    procedure Sys_Assign
 127      (Status : out Cond_Value_Type;
 128       Devnam : String;
 129       Chan   : out unsigned_short;
 130       Acmode : unsigned_short := 0;
 131       Mbxnam : String := String'Null_Parameter;
 132       Flags  : unsigned_long := 0);
 133    pragma Interface (External, Sys_Assign);
 134    pragma Import_Valued_Procedure
 135      (Sys_Assign, "SYS$ASSIGN",
 136       (Cond_Value_Type, String,         unsigned_short,
 137        unsigned_short,  String,         unsigned_long),
 138       (Value,           Descriptor (s), Reference,
 139        Value,           Descriptor (s), Value),
 140       Flags);
 141
 142    ----------------
 143    -- Sys_Cantim --
 144    ----------------
 145    --
 146    --  Cancel Timer
 147    --
 148    --  Status  = returned status
 149    --  Reqidt  = ID of timer to be cancelled
 150    --  Acmode  = Access mode
 151    --
 152    procedure Sys_Cantim
 153      (Status : out Cond_Value_Type;
 154       Reqidt : Address;
 155       Acmode : unsigned);
 156    pragma Interface (External, Sys_Cantim);
 157    pragma Import_Valued_Procedure
 158      (Sys_Cantim, "SYS$CANTIM",
 159       (Cond_Value_Type, Address, unsigned),
 160       (Value,           Value,   Value));
 161
 162    ----------------
 163    -- Sys_Crembx --
 164    ----------------
 165    --
 166    --  Create mailbox
 167    --
 168    --     Status  = returned status
 169    --     Prmflg  = permanent flag
 170    --     Chan    = channel
 171    --     Maxmsg  = maximum message
 172    --     Bufquo  = buufer quote
 173    --     Promsk  = protection mast
 174    --     Acmode  = access mode
 175    --     Lognam  = logical name
 176    --     Flags   = flags
 177    --
 178    procedure Sys_Crembx
 179      (Status : out Cond_Value_Type;
 180       Prmflg : unsigned_char;
 181       Chan   : out unsigned_short;
 182       Maxmsg : unsigned_long := 0;
 183       Bufquo : unsigned_long := 0;
 184       Promsk : unsigned_short := 0;
 185       Acmode : unsigned_short := 0;
 186       Lognam : String;
 187       Flags  : unsigned_long := 0);
 188    pragma Interface (External, Sys_Crembx);
 189    pragma Import_Valued_Procedure
 190      (Sys_Crembx, "SYS$CREMBX",
 191       (Cond_Value_Type, unsigned_char,  unsigned_short,
 192        unsigned_long,   unsigned_long,  unsigned_short,
 193        unsigned_short,  String,         unsigned_long),
 194       (Value,           Value,          Reference,
 195        Value,           Value,          Value,
 196        Value,           Descriptor (s), Value));
 197
 198    -------------
 199    -- Sys_QIO --
 200    -------------
 201    --
 202    --    Queue I/O
 203    --
 204    --     Status = Returned status of call
 205    --     EFN    = event flag to be set when I/O completes
 206    --     Chan   = channel
 207    --     Func   = function
 208    --     Iosb   = I/O status block
 209    --     Astadr = system trap to be generated when I/O completes
 210    --     Astprm = AST parameter
 211    --     P1-6   = optional parameters
 212
 213    procedure Sys_QIO
 214      (Status : out Cond_Value_Type;
 215       EFN    : unsigned_long := 0;
 216       Chan   : unsigned_short;
 217       Func   : unsigned_long := 0;
 218       Iosb   : out IO_Status_Block_Type;
 219       Astadr : AST_Handler := No_AST_Handler;
 220       Astprm : Address := Null_Address;
 221       P1     : unsigned_long := 0;
 222       P2     : unsigned_long := 0;
 223       P3     : unsigned_long := 0;
 224       P4     : unsigned_long := 0;
 225       P5     : unsigned_long := 0;
 226       P6     : unsigned_long := 0);
 227
 228    procedure Sys_QIO
 229      (Status : out Cond_Value_Type;
 230       EFN    : unsigned_long := 0;
 231       Chan   : unsigned_short;
 232       Func   : unsigned_long := 0;
 233       Iosb   : Address := Null_Address;
 234       Astadr : AST_Handler := No_AST_Handler;
 235       Astprm : Address := Null_Address;
 236       P1     : unsigned_long := 0;
 237       P2     : unsigned_long := 0;
 238       P3     : unsigned_long := 0;
 239       P4     : unsigned_long := 0;
 240       P5     : unsigned_long := 0;
 241       P6     : unsigned_long := 0);
 242
 243    pragma Interface (External, Sys_QIO);
 244    pragma Import_Valued_Procedure
 245      (Sys_QIO, "SYS$QIO",
 246       (Cond_Value_Type,      unsigned_long, unsigned_short, unsigned_long,
 247        IO_Status_Block_Type, AST_Handler,   Address,
 248        unsigned_long,        unsigned_long, unsigned_long,
 249        unsigned_long,        unsigned_long, unsigned_long),
 250       (Value,                Value,         Value,          Value,
 251        Reference,            Value,         Value,
 252        Value,                Value,         Value,
 253        Value,                Value,         Value));
 254
 255    pragma Import_Valued_Procedure
 256      (Sys_QIO, "SYS$QIO",
 257       (Cond_Value_Type, unsigned_long, unsigned_short, unsigned_long,
 258        Address,         AST_Handler,   Address,
 259        unsigned_long,   unsigned_long, unsigned_long,
 260        unsigned_long,   unsigned_long, unsigned_long),
 261       (Value,           Value,         Value,          Value,
 262        Value,           Value,         Value,
 263        Value,           Value,         Value,
 264        Value,           Value,         Value));
 265
 266    ----------------
 267    -- Sys_Setimr --
 268    ----------------
 269    --
 270    --    Set Timer
 271    --
 272    --     Status = Returned status of call
 273    --     EFN    = event flag to be set when timer expires
 274    --     Tim    = expiration time
 275    --     AST    = system trap to be generated when timer expires
 276    --     Redidt = returned ID of timer (e.g. to cancel timer)
 277    --     Flags  = flags
 278    --
 279    procedure Sys_Setimr
 280      (Status : out Cond_Value_Type;
 281       EFN    : unsigned_long;
 282       Tim    : Long_Integer;
 283       AST    : AST_Handler;
 284       Reqidt : Address;
 285       Flags  : unsigned_long);
 286    pragma Interface (External, Sys_Setimr);
 287    pragma Import_Valued_Procedure
 288      (Sys_Setimr, "SYS$SETIMR",
 289       (Cond_Value_Type, unsigned_long,     Long_Integer,
 290        AST_Handler,     Address,           unsigned_long),
 291       (Value,           Value,             Reference,
 292        Value,           Value,             Value));
 293
 294    Interrupt_ID_0   : constant  := 0;
 295    Interrupt_ID_1   : constant  := 1;
 296    Interrupt_ID_2   : constant  := 2;
 297    Interrupt_ID_3   : constant  := 3;
 298    Interrupt_ID_4   : constant  := 4;
 299    Interrupt_ID_5   : constant  := 5;
 300    Interrupt_ID_6   : constant  := 6;
 301    Interrupt_ID_7   : constant  := 7;
 302    Interrupt_ID_8   : constant  := 8;
 303    Interrupt_ID_9   : constant  := 9;
 304    Interrupt_ID_10  : constant  := 10;
 305    Interrupt_ID_11  : constant  := 11;
 306    Interrupt_ID_12  : constant  := 12;
 307    Interrupt_ID_13  : constant  := 13;
 308    Interrupt_ID_14  : constant  := 14;
 309    Interrupt_ID_15  : constant  := 15;
 310    Interrupt_ID_16  : constant  := 16;
 311    Interrupt_ID_17  : constant  := 17;
 312    Interrupt_ID_18  : constant  := 18;
 313    Interrupt_ID_19  : constant  := 19;
 314    Interrupt_ID_20  : constant  := 20;
 315    Interrupt_ID_21  : constant  := 21;
 316    Interrupt_ID_22  : constant  := 22;
 317    Interrupt_ID_23  : constant  := 23;
 318    Interrupt_ID_24  : constant  := 24;
 319    Interrupt_ID_25  : constant  := 25;
 320    Interrupt_ID_26  : constant  := 26;
 321    Interrupt_ID_27  : constant  := 27;
 322    Interrupt_ID_28  : constant  := 28;
 323    Interrupt_ID_29  : constant  := 29;
 324    Interrupt_ID_30  : constant  := 30;
 325    Interrupt_ID_31  : constant  := 31;
 326
 327    -----------
 328    -- Errno --
 329    -----------
 330
 331    function errno return int;
 332    pragma Import (C, errno, "__get_errno");
 333
 334    EINTR  : constant := 4;   --  Interrupted system call
 335    EAGAIN : constant := 11;  --  No more processes
 336    ENOMEM : constant := 12;  --  Not enough core
 337
 338    -------------------------
 339    -- Priority Scheduling --
 340    -------------------------
 341
 342    SCHED_FIFO  : constant := 1;
 343    SCHED_RR    : constant := 2;
 344    SCHED_OTHER : constant := 3;
 345    SCHED_BG    : constant := 4;
 346    SCHED_LFI   : constant := 5;
 347    SCHED_LRR   : constant := 6;
 348
 349    -------------
 350    -- Process --
 351    -------------
 352
 353    type pid_t is private;
 354
 355    function kill (pid : pid_t; sig : Signal) return int;
 356    pragma Import (C, kill);
 357
 358    function getpid return pid_t;
 359    pragma Import (C, getpid);
 360
 361    -------------
 362    -- Threads --
 363    -------------
 364
 365    type Thread_Body is access
 366      function (arg : System.Address) return System.Address;
 367    pragma Convention (C, Thread_Body);
 368
 369    function Thread_Body_Access is new
 370      Ada.Unchecked_Conversion (System.Aux_DEC.Short_Address, Thread_Body);
 371
 372    type pthread_t           is private;
 373    subtype Thread_Id        is pthread_t;
 374
 375    type pthread_mutex_t     is limited private;
 376    type pthread_cond_t      is limited private;
 377    type pthread_attr_t      is limited private;
 378    type pthread_mutexattr_t is limited private;
 379    type pthread_condattr_t  is limited private;
 380    type pthread_key_t       is private;
 381
 382    PTHREAD_CREATE_JOINABLE     : constant := 0;
 383    PTHREAD_CREATE_DETACHED     : constant := 1;
 384
 385    PTHREAD_CANCEL_DISABLE      : constant := 0;
 386    PTHREAD_CANCEL_ENABLE       : constant := 1;
 387
 388    PTHREAD_CANCEL_DEFERRED     : constant := 0;
 389    PTHREAD_CANCEL_ASYNCHRONOUS : constant := 1;
 390
 391    --  Don't use ERRORCHECK mutexes, they don't work when a thread is not
 392    --  the owner.  AST's, at least, unlock others threads mutexes. Even
 393    --  if the error is ignored, they don't work.
 394    PTHREAD_MUTEX_NORMAL_NP     : constant := 0;
 395    PTHREAD_MUTEX_RECURSIVE_NP  : constant := 1;
 396    PTHREAD_MUTEX_ERRORCHECK_NP : constant := 2;
 397
 398    PTHREAD_INHERIT_SCHED       : constant := 0;
 399    PTHREAD_EXPLICIT_SCHED      : constant := 1;
 400
 401    function pthread_cancel (thread : pthread_t) return int;
 402    pragma Import (C, pthread_cancel, "PTHREAD_CANCEL");
 403
 404    procedure pthread_testcancel;
 405    pragma Import (C, pthread_testcancel, "PTHREAD_TESTCANCEL");
 406
 407    function pthread_setcancelstate
 408      (newstate : int; oldstate : access int) return int;
 409    pragma Import (C, pthread_setcancelstate, "PTHREAD_SETCANCELSTATE");
 410
 411    function pthread_setcanceltype
 412      (newtype : int; oldtype : access int) return int;
 413    pragma Import (C, pthread_setcanceltype, "PTHREAD_SETCANCELTYPE");
 414
 415    -------------------------
 416    -- POSIX.1c  Section 3 --
 417    -------------------------
 418
 419    function pthread_lock_global_np return int;
 420    pragma Import (C, pthread_lock_global_np, "PTHREAD_LOCK_GLOBAL_NP");
 421
 422    function pthread_unlock_global_np return int;
 423    pragma Import (C, pthread_unlock_global_np, "PTHREAD_UNLOCK_GLOBAL_NP");
 424
 425    --------------------------
 426    -- POSIX.1c  Section 11 --
 427    --------------------------
 428
 429    function pthread_mutexattr_init
 430      (attr : access pthread_mutexattr_t) return int;
 431    pragma Import (C, pthread_mutexattr_init, "PTHREAD_MUTEXATTR_INIT");
 432
 433    function pthread_mutexattr_destroy
 434      (attr : access pthread_mutexattr_t) return int;
 435    pragma Import (C, pthread_mutexattr_destroy, "PTHREAD_MUTEXATTR_DESTROY");
 436
 437    function pthread_mutexattr_settype_np
 438      (attr      : access pthread_mutexattr_t;
 439       mutextype : int) return int;
 440    pragma Import (C, pthread_mutexattr_settype_np,
 441                      "PTHREAD_MUTEXATTR_SETTYPE_NP");
 442
 443    function pthread_mutex_init
 444      (mutex : access pthread_mutex_t;
 445       attr  : access pthread_mutexattr_t) return int;
 446    pragma Import (C, pthread_mutex_init, "PTHREAD_MUTEX_INIT");
 447
 448    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 449    pragma Import (C, pthread_mutex_destroy, "PTHREAD_MUTEX_DESTROY");
 450
 451    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 452    pragma Import (C, pthread_mutex_lock, "PTHREAD_MUTEX_LOCK");
 453
 454    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 455    pragma Import (C, pthread_mutex_unlock, "PTHREAD_MUTEX_UNLOCK");
 456
 457    function pthread_condattr_init
 458      (attr : access pthread_condattr_t) return int;
 459    pragma Import (C, pthread_condattr_init, "PTHREAD_CONDATTR_INIT");
 460
 461    function pthread_condattr_destroy
 462      (attr : access pthread_condattr_t) return int;
 463    pragma Import (C, pthread_condattr_destroy, "PTHREAD_CONDATTR_DESTROY");
 464
 465    function pthread_cond_init
 466      (cond : access pthread_cond_t;
 467       attr : access pthread_condattr_t) return int;
 468    pragma Import (C, pthread_cond_init, "PTHREAD_COND_INIT");
 469
 470    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 471    pragma Import (C, pthread_cond_destroy, "PTHREAD_COND_DESTROY");
 472
 473    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 474    pragma Import (C, pthread_cond_signal, "PTHREAD_COND_SIGNAL");
 475
 476    function pthread_cond_signal_int_np
 477      (cond : access pthread_cond_t) return int;
 478    pragma Import (C, pthread_cond_signal_int_np,
 479                   "PTHREAD_COND_SIGNAL_INT_NP");
 480
 481    function pthread_cond_wait
 482      (cond  : access pthread_cond_t;
 483       mutex : access pthread_mutex_t) return int;
 484    pragma Import (C, pthread_cond_wait, "PTHREAD_COND_WAIT");
 485
 486    --------------------------
 487    -- POSIX.1c  Section 13 --
 488    --------------------------
 489
 490    function pthread_mutexattr_setprotocol
 491      (attr : access pthread_mutexattr_t; protocol : int) return int;
 492    pragma Import (C, pthread_mutexattr_setprotocol,
 493                      "PTHREAD_MUTEXATTR_SETPROTOCOL");
 494
 495    type struct_sched_param is record
 496       sched_priority : int;  --  scheduling priority
 497    end record;
 498    for struct_sched_param'Size use 8*4;
 499    pragma Convention (C, struct_sched_param);
 500
 501    function pthread_setschedparam
 502      (thread : pthread_t;
 503       policy : int;
 504       param  : access struct_sched_param) return int;
 505    pragma Import (C, pthread_setschedparam, "PTHREAD_SETSCHEDPARAM");
 506
 507    function pthread_attr_setscope
 508      (attr            : access pthread_attr_t;
 509       contentionscope : int) return int;
 510    pragma Import (C, pthread_attr_setscope, "PTHREAD_ATTR_SETSCOPE");
 511
 512    function pthread_attr_setinheritsched
 513      (attr            : access pthread_attr_t;
 514       inheritsched : int) return int;
 515    pragma Import (C, pthread_attr_setinheritsched,
 516                      "PTHREAD_ATTR_SETINHERITSCHED");
 517
 518    function pthread_attr_setschedpolicy
 519      (attr : access pthread_attr_t; policy : int) return int;
 520    pragma Import (C, pthread_attr_setschedpolicy,
 521                      "PTHREAD_ATTR_SETSCHEDPOLICY");
 522
 523    function pthread_attr_setschedparam
 524      (attr        : access pthread_attr_t;
 525       sched_param : int) return int;
 526    pragma Import (C, pthread_attr_setschedparam, "PTHREAD_ATTR_SETSCHEDPARAM");
 527
 528    function sched_yield return int;
 529
 530    --------------------------
 531    -- P1003.1c  Section 16 --
 532    --------------------------
 533
 534    function pthread_attr_init (attributes : access pthread_attr_t) return int;
 535    pragma Import (C, pthread_attr_init, "PTHREAD_ATTR_INIT");
 536
 537    function pthread_attr_destroy
 538      (attributes : access pthread_attr_t) return int;
 539    pragma Import (C, pthread_attr_destroy, "PTHREAD_ATTR_DESTROY");
 540
 541    function pthread_attr_setdetachstate
 542      (attr        : access pthread_attr_t;
 543       detachstate : int) return int;
 544    pragma Import (C, pthread_attr_setdetachstate,
 545                      "PTHREAD_ATTR_SETDETACHSTATE");
 546
 547    function pthread_attr_setstacksize
 548      (attr      : access pthread_attr_t;
 549       stacksize : size_t) return int;
 550    pragma Import (C, pthread_attr_setstacksize, "PTHREAD_ATTR_SETSTACKSIZE");
 551
 552    function pthread_create
 553      (thread        : access pthread_t;
 554       attributes    : access pthread_attr_t;
 555       start_routine : Thread_Body;
 556       arg           : System.Address) return int;
 557    pragma Import (C, pthread_create, "PTHREAD_CREATE");
 558
 559    procedure pthread_exit (status : System.Address);
 560    pragma Import (C, pthread_exit, "PTHREAD_EXIT");
 561
 562    function pthread_self return pthread_t;
 563
 564    --------------------------
 565    -- POSIX.1c  Section 17 --
 566    --------------------------
 567
 568    function pthread_setspecific
 569      (key   : pthread_key_t;
 570       value : System.Address) return  int;
 571    pragma Import (C, pthread_setspecific, "PTHREAD_SETSPECIFIC");
 572
 573    function pthread_getspecific (key : pthread_key_t) return System.Address;
 574    pragma Import (C, pthread_getspecific, "PTHREAD_GETSPECIFIC");
 575
 576    type destructor_pointer is access procedure (arg : System.Address);
 577    pragma Convention (C, destructor_pointer);
 578
 579    function pthread_key_create
 580      (key        : access pthread_key_t;
 581       destructor : destructor_pointer) return int;
 582    pragma Import (C, pthread_key_create, "PTHREAD_KEY_CREATE");
 583
 584 private
 585
 586    type pid_t is new int;
 587
 588    type pthreadLongAddr_p is mod 2 ** Long_Integer'Size;
 589
 590    type pthreadLongAddr_t is mod 2 ** Long_Integer'Size;
 591    type pthreadLongAddr_t_ptr is mod 2 ** Long_Integer'Size;
 592
 593    type pthreadLongString_t is mod 2 ** Long_Integer'Size;
 594
 595    type pthreadLongUint_t is mod 2 ** Long_Integer'Size;
 596    type pthreadLongUint_array is array (Natural range <>)
 597      of pthreadLongUint_t;
 598
 599    type pthread_t is mod 2 ** Long_Integer'Size;
 600
 601    type pthread_cond_t is record
 602       state    : unsigned;
 603       valid    : unsigned;
 604       name     : pthreadLongString_t;
 605       arg      : unsigned;
 606       sequence : unsigned;
 607       block    : pthreadLongAddr_t_ptr;
 608    end record;
 609    for pthread_cond_t'Size use 8*32;
 610    pragma Convention (C, pthread_cond_t);
 611
 612    type pthread_attr_t is record
 613       valid    : long;
 614       name     : pthreadLongString_t;
 615       arg      : pthreadLongUint_t;
 616       reserved : pthreadLongUint_array (0 .. 18);
 617    end record;
 618    for pthread_attr_t'Size use 8*176;
 619    pragma Convention (C, pthread_attr_t);
 620
 621    type pthread_mutex_t is record
 622       lock     : unsigned;
 623       valid    : unsigned;
 624       name     : pthreadLongString_t;
 625       arg      : unsigned;
 626       sequence : unsigned;
 627       block    : pthreadLongAddr_p;
 628       owner    : unsigned;
 629       depth    : unsigned;
 630    end record;
 631    for pthread_mutex_t'Size use 8*40;
 632    pragma Convention (C, pthread_mutex_t);
 633
 634    type pthread_mutexattr_t is record
 635       valid    : long;
 636       reserved : pthreadLongUint_array (0 .. 14);
 637    end record;
 638    for pthread_mutexattr_t'Size use 8*128;
 639    pragma Convention (C, pthread_mutexattr_t);
 640
 641    type pthread_condattr_t is record
 642       valid    : long;
 643       reserved : pthreadLongUint_array (0 .. 12);
 644    end record;
 645    for pthread_condattr_t'Size use 8*112;
 646    pragma Convention (C, pthread_condattr_t);
 647
 648    type pthread_key_t is new unsigned;
 649
 650    pragma Inline (pthread_self);
 651
 652 end System.OS_Interface;