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. It is --
  31 -- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
  32 -- State University (http://www.gnat.com).                                  --
  33 --                                                                          --
  34 ------------------------------------------------------------------------------
  35
  36 --  This is an Irix (old pthread library) version of this package.
  37
  38 --  This package encapsulates all direct interfaces to OS services
  39 --  that are needed by children of System.
  40
  41 --  PLEASE DO NOT add any with-clauses to this package
  42 --  or remove the pragma Elaborate_Body.
  43 --  It is designed to be a bottom-level (leaf) package.
  44
  45 with Interfaces;
  46 with Interfaces.C;
  47 with Interfaces.C.Strings;
  48
  49 package System.OS_Interface is
  50
  51    pragma Preelaborate;
  52
  53    pragma Linker_Options ("-lathread");
  54
  55    subtype int            is Interfaces.C.int;
  56    subtype short          is Interfaces.C.short;
  57    subtype long           is Interfaces.C.long;
  58    subtype unsigned       is Interfaces.C.unsigned;
  59    subtype unsigned_short is Interfaces.C.unsigned_short;
  60    subtype unsigned_long  is Interfaces.C.unsigned_long;
  61    subtype unsigned_char  is Interfaces.C.unsigned_char;
  62    subtype plain_char     is Interfaces.C.plain_char;
  63    subtype size_t         is Interfaces.C.size_t;
  64    subtype chars_ptr      is Interfaces.C.Strings.chars_ptr;
  65
  66    -----------
  67    -- Errno --
  68    -----------
  69
  70    function errno return int;
  71    pragma Import (C, errno, "__get_errno");
  72
  73    EINTR     : constant := 4;   --  interrupted system call
  74    EAGAIN    : constant := 11;  --  No more processes
  75    ENOMEM    : constant := 12;  --  Not enough core
  76    EINVAL    : constant := 22;  --  Invalid argument
  77    ETIMEDOUT : constant := 145; --  Connection timed out
  78
  79    -------------
  80    -- Signals --
  81    -------------
  82
  83    Max_Interrupt : constant := 64;
  84    type Signal is new int range 0 .. Max_Interrupt;
  85    for Signal'Size use int'Size;
  86
  87    SIGHUP     : constant := 1; --  hangup
  88    SIGINT     : constant := 2; --  interrupt (rubout)
  89    SIGQUIT    : constant := 3; --  quit (ASCD FS)
  90    SIGILL     : constant := 4; --  illegal instruction (not reset)
  91    SIGTRAP    : constant := 5; --  trace trap (not reset)
  92    SIGIOT     : constant := 6; --  IOT instruction
  93    SIGABRT    : constant := 6; --  used by abort, replace SIGIOT in the
  94    --                              future
  95    SIGEMT     : constant := 7; --  EMT instruction
  96    SIGFPE     : constant := 8; --  floating point exception
  97    SIGKILL    : constant := 9; --  kill (cannot be caught or ignored)
  98    SIGBUS     : constant := 10; --  bus error
  99    SIGSEGV    : constant := 11; --  segmentation violation
 100    SIGSYS     : constant := 12; --  bad argument to system call
 101    SIGPIPE    : constant := 13; --  write on a pipe with no one to read it
 102    SIGALRM    : constant := 14; --  alarm clock
 103    SIGTERM    : constant := 15; --  software termination signal from kill
 104    SIGUSR1    : constant := 16; --  user defined signal 1
 105    SIGUSR2    : constant := 17; --  user defined signal 2
 106    SIGCLD     : constant := 18; --  alias for SIGCHLD
 107    SIGCHLD    : constant := 18; --  child status change
 108    SIGPWR     : constant := 19; --  power-fail restart
 109    SIGWINCH   : constant := 20; --  window size change
 110    SIGURG     : constant := 21; --  urgent condition on IO channel
 111    SIGPOLL    : constant := 22; --  pollable event occurred
 112    SIGIO      : constant := 22; --  I/O possible (Solaris SIGPOLL alias)
 113    SIGSTOP    : constant := 23; --  stop (cannot be caught or ignored)
 114    SIGTSTP    : constant := 24; --  user stop requested from tty
 115    SIGCONT    : constant := 25; --  stopped process has been continued
 116    SIGTTIN    : constant := 26; --  background tty read attempted
 117    SIGTTOU    : constant := 27; --  background tty write attempted
 118    SIGVTALRM  : constant := 28; --  virtual timer expired
 119    SIGPROF    : constant := 29; --  profiling timer expired
 120    SIGXCPU    : constant := 30; --  CPU time limit exceeded
 121    SIGXFSZ    : constant := 31; --  filesize limit exceeded
 122    SIGK32     : constant := 32; --  reserved for kernel (IRIX)
 123    SIGCKPT    : constant := 33; --  Checkpoint warning
 124    SIGRESTART : constant := 34; --  Restart warning
 125    SIGUME     : constant := 35; --  Uncorrectable memory error
 126    --  Signals defined for Posix 1003.1c.
 127    SIGPTINTR    : constant := 47;
 128    SIGPTRESCHED : constant := 48;
 129    --  Posix 1003.1b signals
 130    SIGRTMIN   : constant := 49; --  Posix 1003.1b signals
 131    SIGRTMAX   : constant := 64; --  Posix 1003.1b signals
 132
 133    type sigset_t is private;
 134    type sigset_t_ptr is access all sigset_t;
 135
 136    function sigaddset (set : access sigset_t; sig : Signal) return int;
 137    pragma Import (C, sigaddset, "sigaddset");
 138
 139    function sigdelset (set : access sigset_t; sig : Signal) return int;
 140    pragma Import (C, sigdelset, "sigdelset");
 141
 142    function sigfillset (set : access sigset_t) return int;
 143    pragma Import (C, sigfillset, "sigfillset");
 144
 145    function sigismember (set : access sigset_t; sig : Signal) return int;
 146    pragma Import (C, sigismember, "sigismember");
 147
 148    function sigemptyset (set : access sigset_t) return int;
 149    pragma Import (C, sigemptyset, "sigemptyset");
 150
 151    type siginfo_t is record
 152       si_signo     : int;
 153       si_code      : int;
 154       si_errno     : int;
 155       bit_field_substitute_1 : String (1 .. 116);
 156    end record;
 157    pragma Convention (C, siginfo_t);
 158
 159    type array_type_2 is array (Integer range 0 .. 1) of int;
 160    type struct_sigaction is record
 161       sa_flags     : int;
 162       sa_handler   : System.Address;
 163       sa_mask      : sigset_t;
 164       sa_resv      : array_type_2;
 165    end record;
 166    pragma Convention (C, struct_sigaction);
 167    type struct_sigaction_ptr is access all struct_sigaction;
 168
 169    SIG_BLOCK   : constant := 1;
 170    SIG_UNBLOCK : constant := 2;
 171    SIG_SETMASK : constant := 3;
 172
 173    SIG_DFL : constant := 0;
 174    SIG_IGN : constant := 1;
 175
 176    function sigaction
 177      (sig  : Signal;
 178       act  : struct_sigaction_ptr;
 179       oact : struct_sigaction_ptr := null) return int;
 180    pragma Import (C, sigaction, "sigaction");
 181
 182    ----------
 183    -- Time --
 184    ----------
 185
 186    type time_t is new int;
 187
 188    type timespec is record
 189       tv_sec  : time_t;
 190       tv_nsec : long;
 191    end record;
 192    pragma Convention (C, timespec);
 193    type timespec_ptr is access all timespec;
 194
 195    function To_Duration (TS : timespec) return Duration;
 196    pragma Inline (To_Duration);
 197
 198    function To_Timespec (D : Duration) return timespec;
 199    pragma Inline (To_Timespec);
 200
 201    type timer_t is new Integer;
 202    type clockid_t is private;
 203
 204    CLOCK_REALTIME  : constant clockid_t;
 205    CLOCK_SGI_FAST  : constant clockid_t;
 206    CLOCK_SGI_CYCLE : constant clockid_t;
 207
 208    SGI_CYCLECNTR_SIZE : constant := 165;
 209    function syssgi (request : Interfaces.C.int) return Interfaces.C.ptrdiff_t;
 210
 211    pragma Import (C, syssgi, "syssgi");
 212
 213    function clock_gettime
 214      (clock_id : clockid_t;
 215       tp       : access timespec) return int;
 216    pragma Import (C, clock_gettime, "clock_gettime");
 217
 218    function clock_getres
 219      (clock_id : clockid_t; tp : access timespec) return int;
 220    pragma Import (C, clock_getres, "clock_getres");
 221
 222    type struct_timeval is record
 223       tv_sec  : time_t;
 224       tv_usec : time_t;
 225    end record;
 226    pragma Convention (C, struct_timeval);
 227
 228    function To_Duration (TV : struct_timeval) return Duration;
 229    pragma Inline (To_Duration);
 230
 231    function To_Timeval (D : Duration) return struct_timeval;
 232    pragma Inline (To_Timeval);
 233
 234    function gettimeofday
 235      (tv : access struct_timeval;
 236       tz : System.Address := System.Null_Address) return int;
 237    pragma Import (C, gettimeofday, "gettimeofday");
 238
 239    -------------------------
 240    -- Priority Scheduling --
 241    -------------------------
 242
 243    SCHED_FIFO  : constant := 0;
 244    SCHED_RR    : constant := 0;
 245    SCHED_OTHER : constant := 0;
 246
 247    -------------
 248    -- Process --
 249    -------------
 250
 251    type pid_t is private;
 252
 253    function kill (pid : pid_t; sig : Signal) return int;
 254    pragma Import (C, kill, "kill");
 255
 256    function getpid return pid_t;
 257    pragma Import (C, getpid, "getpid");
 258
 259    ---------------------------------------
 260    -- Nonstandard Thread Initialization --
 261    ---------------------------------------
 262
 263    procedure pthread_init;
 264    pragma Inline (pthread_init);
 265    --  This is a dummy procedure to share some GNULLI files
 266
 267    -------------
 268    -- Threads --
 269    -------------
 270
 271    type Thread_Body is access
 272      function (arg : System.Address) return System.Address;
 273
 274    type pthread_t           is private; --   thread identifier
 275    subtype Thread_Id        is pthread_t;
 276
 277    type pthread_mutex_t     is private; --   mutex identifier
 278    type pthread_cond_t      is private; --   cond identifier
 279    type pthread_attr_t      is private; --   pthread attributes
 280    type pthread_mutexattr_t is private; --   mutex attributes
 281    type pthread_condattr_t  is private; --   mutex attributes
 282    type sem_t               is private; --   semaphore identifier
 283    type pthread_key_t       is private; --   per thread key
 284
 285    subtype pthread_once_t   is int;     --   dynamic package initialization
 286    subtype resource_t       is long;    --   sproc. resource info.
 287    type start_addr is access function (arg : Address) return Address;
 288    type sproc_start_addr is access function (arg : Address) return int;
 289    type callout_addr is
 290      access function (arg : Address; arg1 : Address) return Address;
 291
 292    --  SGI specific types
 293
 294    subtype sproc_t      is Address; --   sproc identifier
 295    subtype sproc_attr_t is Address; --   sproc attributes
 296
 297    subtype spcb_p is Address;
 298    subtype ptcb_p is Address;
 299
 300    --  Pthread Error Types
 301
 302    FUNC_OK  : constant := 0;
 303    FUNC_ERR : constant := -1;
 304
 305    --  pthread run-time initialization data structure
 306
 307    type pthread_init_struct is record
 308       conf_initsize       : int; --  shared area size
 309       max_sproc_count     : int; --  maximum number of sprocs
 310       sproc_stack_size    : size_t;  --  sproc stack size
 311       os_default_priority : int; --  default IRIX pri for main process
 312       os_sched_signal     : int; --  default OS scheduling signal
 313       guard_pages         : int; --  number of guard pages per stack
 314       init_sproc_count    : int; --  initial number of sprocs
 315    end record;
 316
 317    --
 318    --  Pthread Attribute Initialize / Destroy
 319    --
 320
 321    function pthread_attr_init (attr : access pthread_attr_t) return int;
 322    pragma Import (C, pthread_attr_init, "pthread_attr_init");
 323
 324    function pthread_attr_destroy (attr : access pthread_attr_t) return int;
 325    pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
 326
 327    --
 328    --  Thread Attributes
 329    --
 330
 331    function pthread_attr_setstacksize
 332      (attr : access pthread_attr_t; stacksize : size_t) return int;
 333    pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize");
 334
 335    function pthread_attr_setdetachstate
 336      (attr : access pthread_attr_t; detachstate : int) return int;
 337    pragma Import (C, pthread_attr_setdetachstate);
 338
 339    function pthread_attr_setname
 340      (attr : access pthread_attr_t; name : chars_ptr) return int;
 341    pragma Import (C, pthread_attr_setname, "pthread_attr_setname");
 342
 343    --
 344    --  Thread Scheduling Attributes
 345    --
 346
 347    function pthread_attr_setscope
 348      (attr : access pthread_attr_t; contentionscope : int) return int;
 349    pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
 350
 351    function pthread_attr_setinheritsched
 352      (attr : access pthread_attr_t; inherit : int) return int;
 353    pragma Import
 354      (C, pthread_attr_setinheritsched, "pthread_attr_setinheritsched");
 355
 356    function pthread_attr_setsched
 357      (attr : access pthread_attr_t; scheduler : int) return int;
 358    pragma Import (C, pthread_attr_setsched, "pthread_attr_setsched");
 359
 360    function  pthread_attr_setprio
 361      (attr : access pthread_attr_t; priority : int) return int;
 362    pragma Import (C, pthread_attr_setprio, "pthread_attr_setprio");
 363
 364    --
 365    --  SGI Extensions to Thread Attributes
 366    --
 367
 368    --  Bound to sproc attribute values
 369
 370    PTHREAD_BOUND     : constant := 1;
 371    PTHREAD_NOT_BOUND : constant := 0;
 372
 373    function pthread_attr_setresources
 374      (attr : access pthread_attr_t; resources : resource_t) return int;
 375    pragma Import (C, pthread_attr_setresources, "pthread_attr_setresources");
 376
 377    function pthread_attr_set_boundtosproc
 378      (attr : access pthread_attr_t; bound_to_sproc : int) return int;
 379    pragma Import
 380      (C, pthread_attr_set_boundtosproc, "pthread_attr_set_boundtosproc");
 381
 382    function pthread_attr_set_bsproc
 383      (attr : access pthread_attr_t; bsproc : spcb_p) return int;
 384    pragma Import (C, pthread_attr_set_bsproc, "pthread_attr_set_bsproc");
 385
 386    function pthread_attr_set_tslice
 387      (attr        : access pthread_attr_t;
 388       ts_interval : access struct_timeval) return int;
 389    pragma Import (C, pthread_attr_set_tslice, "pthread_attr_set_tslice");
 390
 391    --
 392    --  Thread Creation & Management
 393    --
 394
 395    function pthread_create
 396      (thread        : access pthread_t;
 397       attr          : access pthread_attr_t;
 398       start_routine : start_addr;
 399       arg           : Address) return int;
 400    pragma Import (C, pthread_create, "pthread_create");
 401
 402    procedure pthread_exit (status : Address);
 403    pragma Import (C, pthread_exit, "pthread_exit");
 404
 405    procedure pthread_yield (arg : Address := System.Null_Address);
 406    pragma Import (C, pthread_yield, "pthread_yield");
 407
 408    function pthread_self return pthread_t;
 409    pragma Import (C, pthread_self, "pthread_self");
 410
 411    function pthread_kill (thread : pthread_t; sig : int) return int;
 412    pragma Import (C, pthread_kill, "pthread_kill");
 413
 414    --
 415    --  SGI Extensions to POSIX thread operations
 416    --
 417
 418    function pthread_setprio (thread : pthread_t; priority : int) return int;
 419    pragma Import (C, pthread_setprio, "pthread_setprio");
 420
 421    function pthread_suspend (thread : pthread_t) return int;
 422    pragma Import (C, pthread_suspend, "pthread_suspend");
 423
 424    function pthread_resume (thread : pthread_t) return int;
 425    pragma Import (C, pthread_resume, "pthread_resume");
 426
 427    function pthread_get_current_ada_tcb return Address;
 428    pragma Import (C, pthread_get_current_ada_tcb);
 429
 430    function pthread_set_ada_tcb
 431      (thread : pthread_t; data : Address) return int;
 432    pragma Import (C, pthread_set_ada_tcb, "pthread_set_ada_tcb");
 433
 434    --  Mutex Initialization / Destruction
 435
 436    function pthread_mutexattr_init
 437      (attr : access pthread_mutexattr_t) return int;
 438    pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
 439
 440    function pthread_mutexattr_destroy
 441      (attr : access pthread_mutexattr_t) return int;
 442    pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
 443
 444    function pthread_mutexattr_setqueueorder
 445      (attr : access pthread_mutexattr_t; order : int) return int;
 446    pragma Import (C, pthread_mutexattr_setqueueorder);
 447
 448    function pthread_mutexattr_setceilingprio
 449      (attr : access pthread_mutexattr_t; priority : int) return int;
 450    pragma Import (C, pthread_mutexattr_setceilingprio);
 451
 452    --  Mutex Attributes
 453
 454    --  Threads queueing order
 455
 456    MUTEX_PRIORITY         : constant := 0; --   wait in priority order
 457    MUTEX_FIFO             : constant := 1; --   first-in-first-out
 458    MUTEX_PRIORITY_INHERIT : constant := 2; --   priority inhertance mutex
 459    MUTEX_PRIORITY_CEILING : constant := 3; --   priority ceiling mutex
 460
 461    --  Mutex debugging options
 462
 463    MUTEX_NO_DEBUG  : constant := 0; --   no debugging on mutex
 464    MUTEX_DEBUG     : constant := 1; --   debugging is on
 465
 466    --  Mutex spin on lock operations
 467
 468    MUTEX_NO_SPIN   : constant := 0;  --   no spin, try once only
 469    MUTEX_SPIN_ONLY : constant := -1; --   spin forever
 470    --  cnt > 0, limited spin
 471    --  Mutex sharing attributes
 472
 473    MUTEX_SHARED    : constant := 0; --   shared between processes
 474    MUTEX_NOTSHARED : constant := 1; --   not shared between processes
 475
 476    --  Mutex Operations
 477
 478    function pthread_mutex_init
 479      (mutex : access pthread_mutex_t;
 480       attr  : access pthread_mutexattr_t) return int;
 481    pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
 482
 483    function pthread_mutex_destroy
 484      (mutex : access pthread_mutex_t) return int;
 485    pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
 486
 487    function pthread_mutex_lock
 488      (mutex : access pthread_mutex_t) return int;
 489    pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
 490
 491    function pthread_mutex_unlock
 492      (mutex : access pthread_mutex_t) return int;
 493    pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
 494
 495    --  Condition Initialization / Destruction
 496
 497    function pthread_condattr_init
 498      (attr : access pthread_condattr_t) return int;
 499    pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
 500
 501    function pthread_condattr_destroy
 502      (attr : access pthread_condattr_t) return int;
 503    pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
 504
 505    --  Condition Attributes
 506
 507    COND_PRIORITY  : constant := 0; --   wait in priority order
 508    COND_FIFO      : constant := 1; --   first-in-first-out
 509
 510    --  Condition debugging options
 511
 512    COND_NO_DEBUG  : constant := 0; --   no debugging on mutex
 513    COND_DEBUG     : constant := 1; --   debugging is on
 514
 515    --  Condition sharing attributes
 516
 517    COND_SHARED    : constant := 0; --   shared between processes
 518    COND_NOTSHARED : constant := 1; --   not shared between processes
 519
 520    --  Condition Operations
 521
 522    function pthread_cond_init
 523      (cond : access pthread_cond_t;
 524       attr : access pthread_condattr_t) return int;
 525    pragma Import (C, pthread_cond_init, "pthread_cond_init");
 526
 527    function pthread_cond_destroy
 528      (cond : access pthread_cond_t) return int;
 529    pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
 530
 531    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 532    pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
 533
 534    function pthread_cond_wait
 535      (cond  : access pthread_cond_t;
 536       mutex : access pthread_mutex_t) return int;
 537    pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
 538
 539    function pthread_cond_timedwait
 540      (cond    : access pthread_cond_t;
 541       mutex   : access pthread_mutex_t;
 542       abstime : access struct_timeval) return int;
 543    pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
 544
 545    --  Thread-Specific Data
 546
 547    type foo_h_proc_1 is access procedure (value : Address);
 548
 549    function pthread_key_create
 550      (key : access pthread_key_t; destructor : foo_h_proc_1) return int;
 551    pragma Import (C, pthread_key_create, "pthread_key_create");
 552
 553    function pthread_setspecific
 554      (key : pthread_key_t; value : Address) return int;
 555    pragma Import (C, pthread_setspecific, "pthread_setspecific");
 556
 557    function pthread_getspecific
 558      (key : pthread_key_t; value : access Address) return int;
 559    pragma Import (C, pthread_getspecific, "pthread_getspecific");
 560
 561    type foo_h_proc_2 is access procedure;
 562
 563    function pthread_exec_begin (init : access pthread_init_struct) return int;
 564    pragma Import (C, pthread_exec_begin, "pthread_exec_begin");
 565
 566    function sproc_create
 567      (sproc_id      : access sproc_t;
 568       attr          : access sproc_attr_t;
 569       start_routine : sproc_start_addr;
 570       arg           : Address) return int;
 571    pragma Import (C, sproc_create, "sproc_create");
 572
 573    function sproc_self return sproc_t;
 574    pragma Import (C, sproc_self, "sproc_self");
 575
 576    --  if equal fast TRUE is returned - common case
 577    --  if not equal thread resource must NOT be null in order to compare bits
 578
 579    --
 580    --  Sproc attribute initialize / destroy
 581    --
 582
 583    function sproc_attr_init (attr : access sproc_attr_t) return int;
 584    pragma Import (C, sproc_attr_init, "sproc_attr_init");
 585
 586    function sproc_attr_destroy (attr : access sproc_attr_t) return int;
 587    pragma Import (C, sproc_attr_destroy, "sproc_attr_destroy");
 588
 589    function sproc_attr_setresources
 590      (attr : access sproc_attr_t; resources : resource_t) return int;
 591    pragma Import (C, sproc_attr_setresources, "sproc_attr_setresources");
 592
 593    function sproc_attr_getresources
 594      (attr      : access sproc_attr_t;
 595       resources : access resource_t) return int;
 596    pragma Import (C, sproc_attr_getresources, "sproc_attr_getresources");
 597
 598    function sproc_attr_setcpu
 599      (attr : access sproc_attr_t; cpu_num : int) return int;
 600    pragma Import (C, sproc_attr_setcpu, "sproc_attr_setcpu");
 601
 602    function sproc_attr_getcpu
 603      (attr : access sproc_attr_t; cpu_num : access int) return int;
 604    pragma Import (C, sproc_attr_getcpu, "sproc_attr_getcpu");
 605
 606    function sproc_attr_setresident
 607      (attr : access sproc_attr_t; resident : int) return int;
 608    pragma Import (C, sproc_attr_setresident, "sproc_attr_setresident");
 609
 610    function sproc_attr_getresident
 611      (attr : access sproc_attr_t; resident : access int) return int;
 612    pragma Import (C, sproc_attr_getresident, "sproc_attr_getresident");
 613
 614    function sproc_attr_setname
 615      (attr : access sproc_attr_t; name : chars_ptr) return int;
 616    pragma Import (C, sproc_attr_setname, "sproc_attr_setname");
 617
 618    function sproc_attr_getname
 619      (attr : access sproc_attr_t; name : chars_ptr) return int;
 620    pragma Import (C, sproc_attr_getname, "sproc_attr_getname");
 621
 622    function sproc_attr_setstacksize
 623      (attr : access sproc_attr_t; stacksize : size_t) return int;
 624    pragma Import (C, sproc_attr_setstacksize, "sproc_attr_setstacksize");
 625
 626    function sproc_attr_getstacksize
 627      (attr : access sproc_attr_t; stacksize : access size_t) return int;
 628    pragma Import (C, sproc_attr_getstacksize, "sproc_attr_getstacksize");
 629
 630    function sproc_attr_setprio
 631      (attr : access sproc_attr_t; priority : int) return int;
 632    pragma Import (C, sproc_attr_setprio, "sproc_attr_setprio");
 633
 634    function sproc_attr_getprio
 635      (attr : access sproc_attr_t; priority : access int) return int;
 636    pragma Import (C, sproc_attr_getprio, "sproc_attr_getprio");
 637
 638    function sproc_attr_setbthread
 639      (attr : access sproc_attr_t; bthread : ptcb_p) return int;
 640    pragma Import (C, sproc_attr_setbthread, "sproc_attr_setbthread");
 641
 642    function sproc_attr_getbthread
 643      (attr : access sproc_attr_t; bthread : access ptcb_p) return int;
 644    pragma Import (C, sproc_attr_getbthread, "sproc_attr_getbthread");
 645
 646    SPROC_NO_RESOURCES : constant := 0;
 647    SPROC_ANY_CPU      : constant := -1;
 648    SPROC_MY_PRIORITY  : constant := -1;
 649    SPROC_SWAPPED      : constant := 0;
 650    SPROC_RESIDENT     : constant := 1;
 651
 652    type isr_address is access procedure;
 653
 654    function intr_attach (sig : int; isr : isr_address) return int;
 655    pragma Import (C, intr_attach, "intr_attach");
 656
 657    Intr_Attach_Reset : constant Boolean := False;
 658    --  True if intr_attach is reset after an interrupt handler is called
 659
 660    function intr_exchange
 661      (sig  : int;
 662       isr  : isr_address;
 663       oisr : access isr_address) return int;
 664    pragma Import (C, intr_exchange, "intr_exchange");
 665
 666    function intr_current_isr
 667      (sig  : int;
 668       oisr : access isr_address)
 669      return int;
 670    pragma Import (C, intr_current_isr, "intr_current_isr");
 671
 672 private
 673
 674    type clockid_t is new int;
 675
 676    CLOCK_REALTIME  : constant clockid_t := 1;
 677    CLOCK_SGI_CYCLE : constant clockid_t := 2;
 678    CLOCK_SGI_FAST  : constant clockid_t := 3;
 679
 680    type pthread_t           is new Address; --   thread identifier
 681    type pthread_mutex_t     is new Address; --   mutex identifier
 682    type pthread_cond_t      is new Address; --   cond identifier
 683    type pthread_attr_t      is new Address; --   pthread attributes
 684    type pthread_mutexattr_t is new Address; --   mutex attributes
 685    type pthread_condattr_t  is new Address; --   mutex attributes
 686    type sem_t               is new Address; --   semaphore identifier
 687    type pthread_key_t       is new Address; --   per thread key
 688
 689    type sigbits_t is array (Integer range 0 .. 3) of unsigned;
 690    type sigset_t is record
 691       sigbits : sigbits_t;
 692    end record;
 693    pragma Convention (C, sigset_t);
 694
 695    type pid_t is new long;
 696
 697 end System.OS_Interface;