gcc/ada/5gosinte.ads

   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 --                                                                          --
  10 --          Copyright (C) 1997-2001 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,  59 Temple Place - Suite 330,  Boston, --
  21 -- MA 02111-1307, 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 an Irix (old pthread library) version of this package.
  36
  37 --  This package encapsulates all direct interfaces to OS services
  38 --  that are needed by children of System.
  39
  40 --  PLEASE DO NOT add any with-clauses to this package
  41 --  or remove the pragma Elaborate_Body.
  42 --  It is designed to be a bottom-level (leaf) package.
  43
  44 with Interfaces;
  45 with Interfaces.C;
  46 with Interfaces.C.Strings;
  47
  48 package System.OS_Interface is
  49
  50    pragma Preelaborate;
  51
  52    pragma Linker_Options ("-lathread");
  53
  54    subtype int            is Interfaces.C.int;
  55    subtype short          is Interfaces.C.short;
  56    subtype long           is Interfaces.C.long;
  57    subtype unsigned       is Interfaces.C.unsigned;
  58    subtype unsigned_short is Interfaces.C.unsigned_short;
  59    subtype unsigned_long  is Interfaces.C.unsigned_long;
  60    subtype unsigned_char  is Interfaces.C.unsigned_char;
  61    subtype plain_char     is Interfaces.C.plain_char;
  62    subtype size_t         is Interfaces.C.size_t;
  63    subtype chars_ptr      is Interfaces.C.Strings.chars_ptr;
  64
  65    -----------
  66    -- Errno --
  67    -----------
  68
  69    function errno return int;
  70    pragma Import (C, errno, "__get_errno");
  71
  72    EINTR     : constant := 4;   --  interrupted system call
  73    EAGAIN    : constant := 11;  --  No more processes
  74    ENOMEM    : constant := 12;  --  Not enough core
  75    EINVAL    : constant := 22;  --  Invalid argument
  76    ETIMEDOUT : constant := 145; --  Connection timed out
  77
  78    -------------
  79    -- Signals --
  80    -------------
  81
  82    Max_Interrupt : constant := 64;
  83    type Signal is new int range 0 .. Max_Interrupt;
  84    for Signal'Size use int'Size;
  85
  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
  93    --                              future
  94    SIGEMT     : constant := 7; --  EMT instruction
  95    SIGFPE     : constant := 8; --  floating point exception
  96    SIGKILL    : constant := 9; --  kill (cannot be caught or ignored)
  97    SIGBUS     : constant := 10; --  bus error
  98    SIGSEGV    : constant := 11; --  segmentation violation
  99    SIGSYS     : constant := 12; --  bad argument to system call
 100    SIGPIPE    : constant := 13; --  write on a pipe with no one to read it
 101    SIGALRM    : constant := 14; --  alarm clock
 102    SIGTERM    : constant := 15; --  software termination signal from kill
 103    SIGUSR1    : constant := 16; --  user defined signal 1
 104    SIGUSR2    : constant := 17; --  user defined signal 2
 105    SIGCLD     : constant := 18; --  alias for SIGCHLD
 106    SIGCHLD    : constant := 18; --  child status change
 107    SIGPWR     : constant := 19; --  power-fail restart
 108    SIGWINCH   : constant := 20; --  window size change
 109    SIGURG     : constant := 21; --  urgent condition on IO channel
 110    SIGPOLL    : constant := 22; --  pollable event occurred
 111    SIGIO      : constant := 22; --  I/O possible (Solaris SIGPOLL alias)
 112    SIGSTOP    : constant := 23; --  stop (cannot be caught or ignored)
 113    SIGTSTP    : constant := 24; --  user stop requested from tty
 114    SIGCONT    : constant := 25; --  stopped process has been continued
 115    SIGTTIN    : constant := 26; --  background tty read attempted
 116    SIGTTOU    : constant := 27; --  background tty write attempted
 117    SIGVTALRM  : constant := 28; --  virtual timer expired
 118    SIGPROF    : constant := 29; --  profiling timer expired
 119    SIGXCPU    : constant := 30; --  CPU time limit exceeded
 120    SIGXFSZ    : constant := 31; --  filesize limit exceeded
 121    SIGK32     : constant := 32; --  reserved for kernel (IRIX)
 122    SIGCKPT    : constant := 33; --  Checkpoint warning
 123    SIGRESTART : constant := 34; --  Restart warning
 124    SIGUME     : constant := 35; --  Uncorrectable memory error
 125    --  Signals defined for Posix 1003.1c.
 126    SIGPTINTR    : constant := 47;
 127    SIGPTRESCHED : constant := 48;
 128    --  Posix 1003.1b signals
 129    SIGRTMIN   : constant := 49; --  Posix 1003.1b signals
 130    SIGRTMAX   : constant := 64; --  Posix 1003.1b signals
 131
 132    type sigset_t is private;
 133    type sigset_t_ptr is access all sigset_t;
 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 siginfo_t is record
 151       si_signo     : int;
 152       si_code      : int;
 153       si_errno     : int;
 154       bit_field_substitute_1 : String (1 .. 116);
 155    end record;
 156    pragma Convention (C, siginfo_t);
 157
 158    type array_type_2 is array (Integer range 0 .. 1) of int;
 159    type struct_sigaction is record
 160       sa_flags     : int;
 161       sa_handler   : System.Address;
 162       sa_mask      : sigset_t;
 163       sa_resv      : array_type_2;
 164    end record;
 165    pragma Convention (C, struct_sigaction);
 166    type struct_sigaction_ptr is access all struct_sigaction;
 167
 168    SIG_BLOCK   : constant := 1;
 169    SIG_UNBLOCK : constant := 2;
 170    SIG_SETMASK : constant := 3;
 171
 172    SIG_DFL : constant := 0;
 173    SIG_IGN : constant := 1;
 174
 175    function sigaction
 176      (sig  : Signal;
 177       act  : struct_sigaction_ptr;
 178       oact : struct_sigaction_ptr := null) return int;
 179    pragma Import (C, sigaction, "sigaction");
 180
 181    ----------
 182    -- Time --
 183    ----------
 184
 185    type time_t is new int;
 186
 187    type timespec is record
 188       tv_sec  : time_t;
 189       tv_nsec : long;
 190    end record;
 191    pragma Convention (C, timespec);
 192    type timespec_ptr is access all timespec;
 193
 194    function To_Duration (TS : timespec) return Duration;
 195    pragma Inline (To_Duration);
 196
 197    function To_Timespec (D : Duration) return timespec;
 198    pragma Inline (To_Timespec);
 199
 200    type timer_t is new Integer;
 201    type clockid_t is private;
 202
 203    CLOCK_REALTIME  : constant clockid_t;
 204    CLOCK_SGI_FAST  : constant clockid_t;
 205    CLOCK_SGI_CYCLE : constant clockid_t;
 206
 207    SGI_CYCLECNTR_SIZE : constant := 165;
 208    function syssgi (request : Interfaces.C.int) return Interfaces.C.ptrdiff_t;
 209
 210    pragma Import (C, syssgi, "syssgi");
 211
 212    function clock_gettime
 213      (clock_id : clockid_t;
 214       tp       : access timespec) return int;
 215    pragma Import (C, clock_gettime, "clock_gettime");
 216
 217    function clock_getres
 218      (clock_id : clockid_t; tp : access timespec) return int;
 219    pragma Import (C, clock_getres, "clock_getres");
 220
 221    type struct_timeval is record
 222       tv_sec  : time_t;
 223       tv_usec : time_t;
 224    end record;
 225    pragma Convention (C, struct_timeval);
 226
 227    function To_Duration (TV : struct_timeval) return Duration;
 228    pragma Inline (To_Duration);
 229
 230    function To_Timeval (D : Duration) return struct_timeval;
 231    pragma Inline (To_Timeval);
 232
 233    function gettimeofday
 234      (tv : access struct_timeval;
 235       tz : System.Address := System.Null_Address) return int;
 236    pragma Import (C, gettimeofday, "gettimeofday");
 237
 238    -------------------------
 239    -- Priority Scheduling --
 240    -------------------------
 241
 242    SCHED_FIFO  : constant := 0;
 243    SCHED_RR    : constant := 0;
 244    SCHED_OTHER : constant := 0;
 245
 246    -------------
 247    -- Process --
 248    -------------
 249
 250    type pid_t is private;
 251
 252    function kill (pid : pid_t; sig : Signal) return int;
 253    pragma Import (C, kill, "kill");
 254
 255    function getpid return pid_t;
 256    pragma Import (C, getpid, "getpid");
 257
 258    ---------------------------------------
 259    -- Nonstandard Thread Initialization --
 260    ---------------------------------------
 261
 262    procedure pthread_init;
 263    pragma Inline (pthread_init);
 264    --  This is a dummy procedure to share some GNULLI files
 265
 266    -------------
 267    -- Threads --
 268    -------------
 269
 270    type Thread_Body is access
 271      function (arg : System.Address) return System.Address;
 272
 273    type pthread_t           is private; --   thread identifier
 274    subtype Thread_Id        is pthread_t;
 275
 276    type pthread_mutex_t     is private; --   mutex identifier
 277    type pthread_cond_t      is private; --   cond identifier
 278    type pthread_attr_t      is private; --   pthread attributes
 279    type pthread_mutexattr_t is private; --   mutex attributes
 280    type pthread_condattr_t  is private; --   mutex attributes
 281    type sem_t               is private; --   semaphore identifier
 282    type pthread_key_t       is private; --   per thread key
 283
 284    subtype pthread_once_t   is int;     --   dynamic package initialization
 285    subtype resource_t       is long;    --   sproc. resource info.
 286    type start_addr is access function (arg : Address) return Address;
 287    type sproc_start_addr is access function (arg : Address) return int;
 288    type callout_addr is
 289      access function (arg : Address; arg1 : Address) return Address;
 290
 291    --  SGI specific types
 292
 293    subtype sproc_t      is Address; --   sproc identifier
 294    subtype sproc_attr_t is Address; --   sproc attributes
 295
 296    subtype spcb_p is Address;
 297    subtype ptcb_p is Address;
 298
 299    --  Pthread Error Types
 300
 301    FUNC_OK  : constant := 0;
 302    FUNC_ERR : constant := -1;
 303
 304    --  pthread run-time initialization data structure
 305
 306    type pthread_init_struct is record
 307       conf_initsize       : int; --  shared area size
 308       max_sproc_count     : int; --  maximum number of sprocs
 309       sproc_stack_size    : size_t;  --  sproc stack size
 310       os_default_priority : int; --  default IRIX pri for main process
 311       os_sched_signal     : int; --  default OS scheduling signal
 312       guard_pages         : int; --  number of guard pages per stack
 313       init_sproc_count    : int; --  initial number of sprocs
 314    end record;
 315
 316    --
 317    --  Pthread Attribute Initialize / Destroy
 318    --
 319
 320    function pthread_attr_init (attr : access pthread_attr_t) return int;
 321    pragma Import (C, pthread_attr_init, "pthread_attr_init");
 322
 323    function pthread_attr_destroy (attr : access pthread_attr_t) return int;
 324    pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
 325
 326    --
 327    --  Thread Attributes
 328    --
 329
 330    function pthread_attr_setstacksize
 331      (attr : access pthread_attr_t; stacksize : size_t) return int;
 332    pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize");
 333
 334    function pthread_attr_setdetachstate
 335      (attr : access pthread_attr_t; detachstate : int) return int;
 336    pragma Import (C, pthread_attr_setdetachstate);
 337
 338    function pthread_attr_setname
 339      (attr : access pthread_attr_t; name : chars_ptr) return int;
 340    pragma Import (C, pthread_attr_setname, "pthread_attr_setname");
 341
 342    --
 343    --  Thread Scheduling Attributes
 344    --
 345
 346    function pthread_attr_setscope
 347      (attr : access pthread_attr_t; contentionscope : int) return int;
 348    pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
 349
 350    function pthread_attr_setinheritsched
 351      (attr : access pthread_attr_t; inherit : int) return int;
 352    pragma Import
 353      (C, pthread_attr_setinheritsched, "pthread_attr_setinheritsched");
 354
 355    function pthread_attr_setsched
 356      (attr : access pthread_attr_t; scheduler : int) return int;
 357    pragma Import (C, pthread_attr_setsched, "pthread_attr_setsched");
 358
 359    function  pthread_attr_setprio
 360      (attr : access pthread_attr_t; priority : int) return int;
 361    pragma Import (C, pthread_attr_setprio, "pthread_attr_setprio");
 362
 363    --
 364    --  SGI Extensions to Thread Attributes
 365    --
 366
 367    --  Bound to sproc attribute values
 368
 369    PTHREAD_BOUND     : constant := 1;
 370    PTHREAD_NOT_BOUND : constant := 0;
 371
 372    function pthread_attr_setresources
 373      (attr : access pthread_attr_t; resources : resource_t) return int;
 374    pragma Import (C, pthread_attr_setresources, "pthread_attr_setresources");
 375
 376    function pthread_attr_set_boundtosproc
 377      (attr : access pthread_attr_t; bound_to_sproc : int) return int;
 378    pragma Import
 379      (C, pthread_attr_set_boundtosproc, "pthread_attr_set_boundtosproc");
 380
 381    function pthread_attr_set_bsproc
 382      (attr : access pthread_attr_t; bsproc : spcb_p) return int;
 383    pragma Import (C, pthread_attr_set_bsproc, "pthread_attr_set_bsproc");
 384
 385    function pthread_attr_set_tslice
 386      (attr        : access pthread_attr_t;
 387       ts_interval : access struct_timeval) return int;
 388    pragma Import (C, pthread_attr_set_tslice, "pthread_attr_set_tslice");
 389
 390    --
 391    --  Thread Creation & Management
 392    --
 393
 394    function pthread_create
 395      (thread        : access pthread_t;
 396       attr          : access pthread_attr_t;
 397       start_routine : start_addr;
 398       arg           : Address) return int;
 399    pragma Import (C, pthread_create, "pthread_create");
 400
 401    procedure pthread_exit (status : Address);
 402    pragma Import (C, pthread_exit, "pthread_exit");
 403
 404    procedure pthread_yield (arg : Address := System.Null_Address);
 405    pragma Import (C, pthread_yield, "pthread_yield");
 406
 407    function pthread_self return pthread_t;
 408    pragma Import (C, pthread_self, "pthread_self");
 409
 410    function pthread_kill (thread : pthread_t; sig : int) return int;
 411    pragma Import (C, pthread_kill, "pthread_kill");
 412
 413    --
 414    --  SGI Extensions to POSIX thread operations
 415    --
 416
 417    function pthread_setprio (thread : pthread_t; priority : int) return int;
 418    pragma Import (C, pthread_setprio, "pthread_setprio");
 419
 420    function pthread_suspend (thread : pthread_t) return int;
 421    pragma Import (C, pthread_suspend, "pthread_suspend");
 422
 423    function pthread_resume (thread : pthread_t) return int;
 424    pragma Import (C, pthread_resume, "pthread_resume");
 425
 426    function pthread_get_current_ada_tcb return Address;
 427    pragma Import (C, pthread_get_current_ada_tcb);
 428
 429    function pthread_set_ada_tcb
 430      (thread : pthread_t; data : Address) return int;
 431    pragma Import (C, pthread_set_ada_tcb, "pthread_set_ada_tcb");
 432
 433    --  Mutex Initialization / Destruction
 434
 435    function pthread_mutexattr_init
 436      (attr : access pthread_mutexattr_t) return int;
 437    pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
 438
 439    function pthread_mutexattr_destroy
 440      (attr : access pthread_mutexattr_t) return int;
 441    pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
 442
 443    function pthread_mutexattr_setqueueorder
 444      (attr : access pthread_mutexattr_t; order : int) return int;
 445    pragma Import (C, pthread_mutexattr_setqueueorder);
 446
 447    function pthread_mutexattr_setceilingprio
 448      (attr : access pthread_mutexattr_t; priority : int) return int;
 449    pragma Import (C, pthread_mutexattr_setceilingprio);
 450
 451    --  Mutex Attributes
 452
 453    --  Threads queueing order
 454
 455    MUTEX_PRIORITY         : constant := 0; --   wait in priority order
 456    MUTEX_FIFO             : constant := 1; --   first-in-first-out
 457    MUTEX_PRIORITY_INHERIT : constant := 2; --   priority inhertance mutex
 458    MUTEX_PRIORITY_CEILING : constant := 3; --   priority ceiling mutex
 459
 460    --  Mutex debugging options
 461
 462    MUTEX_NO_DEBUG  : constant := 0; --   no debugging on mutex
 463    MUTEX_DEBUG     : constant := 1; --   debugging is on
 464
 465    --  Mutex spin on lock operations
 466
 467    MUTEX_NO_SPIN   : constant := 0;  --   no spin, try once only
 468    MUTEX_SPIN_ONLY : constant := -1; --   spin forever
 469    --  cnt > 0, limited spin
 470    --  Mutex sharing attributes
 471
 472    MUTEX_SHARED    : constant := 0; --   shared between processes
 473    MUTEX_NOTSHARED : constant := 1; --   not shared between processes
 474
 475    --  Mutex Operations
 476
 477    function pthread_mutex_init
 478      (mutex : access pthread_mutex_t;
 479       attr  : access pthread_mutexattr_t) return int;
 480    pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
 481
 482    function pthread_mutex_destroy
 483      (mutex : access pthread_mutex_t) return int;
 484    pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
 485
 486    function pthread_mutex_lock
 487      (mutex : access pthread_mutex_t) return int;
 488    pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
 489
 490    function pthread_mutex_unlock
 491      (mutex : access pthread_mutex_t) return int;
 492    pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
 493
 494    --  Condition Initialization / Destruction
 495
 496    function pthread_condattr_init
 497      (attr : access pthread_condattr_t) return int;
 498    pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
 499
 500    function pthread_condattr_destroy
 501      (attr : access pthread_condattr_t) return int;
 502    pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
 503
 504    --  Condition Attributes
 505
 506    COND_PRIORITY  : constant := 0; --   wait in priority order
 507    COND_FIFO      : constant := 1; --   first-in-first-out
 508
 509    --  Condition debugging options
 510
 511    COND_NO_DEBUG  : constant := 0; --   no debugging on mutex
 512    COND_DEBUG     : constant := 1; --   debugging is on
 513
 514    --  Condition sharing attributes
 515
 516    COND_SHARED    : constant := 0; --   shared between processes
 517    COND_NOTSHARED : constant := 1; --   not shared between processes
 518
 519    --  Condition Operations
 520
 521    function pthread_cond_init
 522      (cond : access pthread_cond_t;
 523       attr : access pthread_condattr_t) return int;
 524    pragma Import (C, pthread_cond_init, "pthread_cond_init");
 525
 526    function pthread_cond_destroy
 527      (cond : access pthread_cond_t) return int;
 528    pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
 529
 530    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 531    pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
 532
 533    function pthread_cond_wait
 534      (cond  : access pthread_cond_t;
 535       mutex : access pthread_mutex_t) return int;
 536    pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
 537
 538    function pthread_cond_timedwait
 539      (cond    : access pthread_cond_t;
 540       mutex   : access pthread_mutex_t;
 541       abstime : access struct_timeval) return int;
 542    pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
 543
 544    --  Thread-Specific Data
 545
 546    type foo_h_proc_1 is access procedure (value : Address);
 547
 548    function pthread_key_create
 549      (key : access pthread_key_t; destructor : foo_h_proc_1) return int;
 550    pragma Import (C, pthread_key_create, "pthread_key_create");
 551
 552    function pthread_setspecific
 553      (key : pthread_key_t; value : Address) return int;
 554    pragma Import (C, pthread_setspecific, "pthread_setspecific");
 555
 556    function pthread_getspecific
 557      (key : pthread_key_t; value : access Address) return int;
 558    pragma Import (C, pthread_getspecific, "pthread_getspecific");
 559
 560    type foo_h_proc_2 is access procedure;
 561
 562    function pthread_exec_begin (init : access pthread_init_struct) return int;
 563    pragma Import (C, pthread_exec_begin, "pthread_exec_begin");
 564
 565    function sproc_create
 566      (sproc_id      : access sproc_t;
 567       attr          : access sproc_attr_t;
 568       start_routine : sproc_start_addr;
 569       arg           : Address) return int;
 570    pragma Import (C, sproc_create, "sproc_create");
 571
 572    function sproc_self return sproc_t;
 573    pragma Import (C, sproc_self, "sproc_self");
 574
 575    --  if equal fast TRUE is returned - common case
 576    --  if not equal thread resource must NOT be null in order to compare bits
 577
 578    --
 579    --  Sproc attribute initialize / destroy
 580    --
 581
 582    function sproc_attr_init (attr : access sproc_attr_t) return int;
 583    pragma Import (C, sproc_attr_init, "sproc_attr_init");
 584
 585    function sproc_attr_destroy (attr : access sproc_attr_t) return int;
 586    pragma Import (C, sproc_attr_destroy, "sproc_attr_destroy");
 587
 588    function sproc_attr_setresources
 589      (attr : access sproc_attr_t; resources : resource_t) return int;
 590    pragma Import (C, sproc_attr_setresources, "sproc_attr_setresources");
 591
 592    function sproc_attr_getresources
 593      (attr      : access sproc_attr_t;
 594       resources : access resource_t) return int;
 595    pragma Import (C, sproc_attr_getresources, "sproc_attr_getresources");
 596
 597    function sproc_attr_setcpu
 598      (attr : access sproc_attr_t; cpu_num : int) return int;
 599    pragma Import (C, sproc_attr_setcpu, "sproc_attr_setcpu");
 600
 601    function sproc_attr_getcpu
 602      (attr : access sproc_attr_t; cpu_num : access int) return int;
 603    pragma Import (C, sproc_attr_getcpu, "sproc_attr_getcpu");
 604
 605    function sproc_attr_setresident
 606      (attr : access sproc_attr_t; resident : int) return int;
 607    pragma Import (C, sproc_attr_setresident, "sproc_attr_setresident");
 608
 609    function sproc_attr_getresident
 610      (attr : access sproc_attr_t; resident : access int) return int;
 611    pragma Import (C, sproc_attr_getresident, "sproc_attr_getresident");
 612
 613    function sproc_attr_setname
 614      (attr : access sproc_attr_t; name : chars_ptr) return int;
 615    pragma Import (C, sproc_attr_setname, "sproc_attr_setname");
 616
 617    function sproc_attr_getname
 618      (attr : access sproc_attr_t; name : chars_ptr) return int;
 619    pragma Import (C, sproc_attr_getname, "sproc_attr_getname");
 620
 621    function sproc_attr_setstacksize
 622      (attr : access sproc_attr_t; stacksize : size_t) return int;
 623    pragma Import (C, sproc_attr_setstacksize, "sproc_attr_setstacksize");
 624
 625    function sproc_attr_getstacksize
 626      (attr : access sproc_attr_t; stacksize : access size_t) return int;
 627    pragma Import (C, sproc_attr_getstacksize, "sproc_attr_getstacksize");
 628
 629    function sproc_attr_setprio
 630      (attr : access sproc_attr_t; priority : int) return int;
 631    pragma Import (C, sproc_attr_setprio, "sproc_attr_setprio");
 632
 633    function sproc_attr_getprio
 634      (attr : access sproc_attr_t; priority : access int) return int;
 635    pragma Import (C, sproc_attr_getprio, "sproc_attr_getprio");
 636
 637    function sproc_attr_setbthread
 638      (attr : access sproc_attr_t; bthread : ptcb_p) return int;
 639    pragma Import (C, sproc_attr_setbthread, "sproc_attr_setbthread");
 640
 641    function sproc_attr_getbthread
 642      (attr : access sproc_attr_t; bthread : access ptcb_p) return int;
 643    pragma Import (C, sproc_attr_getbthread, "sproc_attr_getbthread");
 644
 645    SPROC_NO_RESOURCES : constant := 0;
 646    SPROC_ANY_CPU      : constant := -1;
 647    SPROC_MY_PRIORITY  : constant := -1;
 648    SPROC_SWAPPED      : constant := 0;
 649    SPROC_RESIDENT     : constant := 1;
 650
 651    type isr_address is access procedure;
 652
 653    function intr_attach (sig : int; isr : isr_address) return int;
 654    pragma Import (C, intr_attach, "intr_attach");
 655
 656    Intr_Attach_Reset : constant Boolean := False;
 657    --  True if intr_attach is reset after an interrupt handler is called
 658
 659    function intr_exchange
 660      (sig  : int;
 661       isr  : isr_address;
 662       oisr : access isr_address) return int;
 663    pragma Import (C, intr_exchange, "intr_exchange");
 664
 665    function intr_current_isr
 666      (sig  : int;
 667       oisr : access isr_address)
 668      return int;
 669    pragma Import (C, intr_current_isr, "intr_current_isr");
 670
 671 private
 672
 673    type clockid_t is new int;
 674
 675    CLOCK_REALTIME  : constant clockid_t := 1;
 676    CLOCK_SGI_CYCLE : constant clockid_t := 2;
 677    CLOCK_SGI_FAST  : constant clockid_t := 3;
 678
 679    type pthread_t           is new Address; --   thread identifier
 680    type pthread_mutex_t     is new Address; --   mutex identifier
 681    type pthread_cond_t      is new Address; --   cond identifier
 682    type pthread_attr_t      is new Address; --   pthread attributes
 683    type pthread_mutexattr_t is new Address; --   mutex attributes
 684    type pthread_condattr_t  is new Address; --   mutex attributes
 685    type sem_t               is new Address; --   semaphore identifier
 686    type pthread_key_t       is new Address; --   per thread key
 687
 688    type sigbits_t is array (Integer range 0 .. 3) of unsigned;
 689    type sigset_t is record
 690       sigbits : sigbits_t;
 691    end record;
 692    pragma Convention (C, sigset_t);
 693
 694    type pid_t is new long;
 695
 696 end System.OS_Interface;