old-autovect-branch/gcc/ada/s-osinte-irix-athread.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) 1995-2005, 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 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 or remove the pragma
  41 --  Preelaborate. This package is designed to be a bottom-level (leaf) package.
  42
  43 with Interfaces;
  44 with Interfaces.C;
  45 with Interfaces.C.Strings;
  46 with Unchecked_Conversion;
  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    function Thread_Body_Access is new
 274      Unchecked_Conversion (System.Address, Thread_Body);
 275
 276    type pthread_t           is private; --   thread identifier
 277    subtype Thread_Id        is pthread_t;
 278
 279    type pthread_mutex_t     is private; --   mutex identifier
 280    type pthread_cond_t      is private; --   cond identifier
 281    type pthread_attr_t      is private; --   pthread attributes
 282    type pthread_mutexattr_t is private; --   mutex attributes
 283    type pthread_condattr_t  is private; --   mutex attributes
 284    type sem_t               is private; --   semaphore identifier
 285    type pthread_key_t       is private; --   per thread key
 286
 287    subtype pthread_once_t   is int;     --   dynamic package initialization
 288    subtype resource_t       is long;    --   sproc. resource info.
 289    type start_addr is access function (arg : Address) return Address;
 290    type sproc_start_addr is access function (arg : Address) return int;
 291    type callout_addr is
 292      access function (arg : Address; arg1 : Address) return Address;
 293
 294    --  SGI specific types
 295
 296    subtype sproc_t      is Address; --   sproc identifier
 297    subtype sproc_attr_t is Address; --   sproc attributes
 298
 299    subtype spcb_p is Address;
 300    subtype ptcb_p is Address;
 301
 302    --  Pthread Error Types
 303
 304    FUNC_OK  : constant := 0;
 305    FUNC_ERR : constant := -1;
 306
 307    --  pthread run-time initialization data structure
 308
 309    type pthread_init_struct is record
 310       conf_initsize       : int; --  shared area size
 311       max_sproc_count     : int; --  maximum number of sprocs
 312       sproc_stack_size    : size_t;  --  sproc stack size
 313       os_default_priority : int; --  default IRIX pri for main process
 314       os_sched_signal     : int; --  default OS scheduling signal
 315       guard_pages         : int; --  number of guard pages per stack
 316       init_sproc_count    : int; --  initial number of sprocs
 317    end record;
 318
 319    --
 320    --  Pthread Attribute Initialize / Destroy
 321    --
 322
 323    function pthread_attr_init (attr : access pthread_attr_t) return int;
 324    pragma Import (C, pthread_attr_init, "pthread_attr_init");
 325
 326    function pthread_attr_destroy (attr : access pthread_attr_t) return int;
 327    pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
 328
 329    --
 330    --  Thread Attributes
 331    --
 332
 333    function pthread_attr_setstacksize
 334      (attr : access pthread_attr_t; stacksize : size_t) return int;
 335    pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize");
 336
 337    function pthread_attr_setdetachstate
 338      (attr : access pthread_attr_t; detachstate : int) return int;
 339    pragma Import (C, pthread_attr_setdetachstate);
 340
 341    function pthread_attr_setname
 342      (attr : access pthread_attr_t; name : chars_ptr) return int;
 343    pragma Import (C, pthread_attr_setname, "pthread_attr_setname");
 344
 345    --
 346    --  Thread Scheduling Attributes
 347    --
 348
 349    function pthread_attr_setscope
 350      (attr : access pthread_attr_t; contentionscope : int) return int;
 351    pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
 352
 353    function pthread_attr_setinheritsched
 354      (attr : access pthread_attr_t; inherit : int) return int;
 355    pragma Import
 356      (C, pthread_attr_setinheritsched, "pthread_attr_setinheritsched");
 357
 358    function pthread_attr_setsched
 359      (attr : access pthread_attr_t; scheduler : int) return int;
 360    pragma Import (C, pthread_attr_setsched, "pthread_attr_setsched");
 361
 362    function  pthread_attr_setprio
 363      (attr : access pthread_attr_t; priority : int) return int;
 364    pragma Import (C, pthread_attr_setprio, "pthread_attr_setprio");
 365
 366    --
 367    --  SGI Extensions to Thread Attributes
 368    --
 369
 370    --  Bound to sproc attribute values
 371
 372    PTHREAD_BOUND     : constant := 1;
 373    PTHREAD_NOT_BOUND : constant := 0;
 374
 375    function pthread_attr_setresources
 376      (attr : access pthread_attr_t; resources : resource_t) return int;
 377    pragma Import (C, pthread_attr_setresources, "pthread_attr_setresources");
 378
 379    function pthread_attr_set_boundtosproc
 380      (attr : access pthread_attr_t; bound_to_sproc : int) return int;
 381    pragma Import
 382      (C, pthread_attr_set_boundtosproc, "pthread_attr_set_boundtosproc");
 383
 384    function pthread_attr_set_bsproc
 385      (attr : access pthread_attr_t; bsproc : spcb_p) return int;
 386    pragma Import (C, pthread_attr_set_bsproc, "pthread_attr_set_bsproc");
 387
 388    function pthread_attr_set_tslice
 389      (attr        : access pthread_attr_t;
 390       ts_interval : access struct_timeval) return int;
 391    pragma Import (C, pthread_attr_set_tslice, "pthread_attr_set_tslice");
 392
 393    --
 394    --  Thread Creation & Management
 395    --
 396
 397    function pthread_create
 398      (thread        : access pthread_t;
 399       attr          : access pthread_attr_t;
 400       start_routine : start_addr;
 401       arg           : Address) return int;
 402    pragma Import (C, pthread_create, "pthread_create");
 403
 404    procedure pthread_exit (status : Address);
 405    pragma Import (C, pthread_exit, "pthread_exit");
 406
 407    procedure pthread_yield (arg : Address := System.Null_Address);
 408    pragma Import (C, pthread_yield, "pthread_yield");
 409
 410    function pthread_self return pthread_t;
 411    pragma Import (C, pthread_self, "pthread_self");
 412
 413    function pthread_kill (thread : pthread_t; sig : int) return int;
 414    pragma Import (C, pthread_kill, "pthread_kill");
 415
 416    --
 417    --  SGI Extensions to POSIX thread operations
 418    --
 419
 420    function pthread_setprio (thread : pthread_t; priority : int) return int;
 421    pragma Import (C, pthread_setprio, "pthread_setprio");
 422
 423    function pthread_suspend (thread : pthread_t) return int;
 424    pragma Import (C, pthread_suspend, "pthread_suspend");
 425
 426    function pthread_resume (thread : pthread_t) return int;
 427    pragma Import (C, pthread_resume, "pthread_resume");
 428
 429    function pthread_get_current_ada_tcb return Address;
 430    pragma Import (C, pthread_get_current_ada_tcb);
 431
 432    function pthread_set_ada_tcb
 433      (thread : pthread_t; data : Address) return int;
 434    pragma Import (C, pthread_set_ada_tcb, "pthread_set_ada_tcb");
 435
 436    --  Mutex Initialization / Destruction
 437
 438    function pthread_mutexattr_init
 439      (attr : access pthread_mutexattr_t) return int;
 440    pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
 441
 442    function pthread_mutexattr_destroy
 443      (attr : access pthread_mutexattr_t) return int;
 444    pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
 445
 446    function pthread_mutexattr_setqueueorder
 447      (attr : access pthread_mutexattr_t; order : int) return int;
 448    pragma Import (C, pthread_mutexattr_setqueueorder);
 449
 450    function pthread_mutexattr_setceilingprio
 451      (attr : access pthread_mutexattr_t; priority : int) return int;
 452    pragma Import (C, pthread_mutexattr_setceilingprio);
 453
 454    --  Mutex Attributes
 455
 456    --  Threads queueing order
 457
 458    MUTEX_PRIORITY         : constant := 0; --   wait in priority order
 459    MUTEX_FIFO             : constant := 1; --   first-in-first-out
 460    MUTEX_PRIORITY_INHERIT : constant := 2; --   priority inhertance mutex
 461    MUTEX_PRIORITY_CEILING : constant := 3; --   priority ceiling mutex
 462
 463    --  Mutex debugging options
 464
 465    MUTEX_NO_DEBUG  : constant := 0; --   no debugging on mutex
 466    MUTEX_DEBUG     : constant := 1; --   debugging is on
 467
 468    --  Mutex spin on lock operations
 469
 470    MUTEX_NO_SPIN   : constant := 0;  --   no spin, try once only
 471    MUTEX_SPIN_ONLY : constant := -1; --   spin forever
 472    --  cnt > 0, limited spin
 473    --  Mutex sharing attributes
 474
 475    MUTEX_SHARED    : constant := 0; --   shared between processes
 476    MUTEX_NOTSHARED : constant := 1; --   not shared between processes
 477
 478    --  Mutex Operations
 479
 480    function pthread_mutex_init
 481      (mutex : access pthread_mutex_t;
 482       attr  : access pthread_mutexattr_t) return int;
 483    pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
 484
 485    function pthread_mutex_destroy
 486      (mutex : access pthread_mutex_t) return int;
 487    pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
 488
 489    function pthread_mutex_lock
 490      (mutex : access pthread_mutex_t) return int;
 491    pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
 492
 493    function pthread_mutex_unlock
 494      (mutex : access pthread_mutex_t) return int;
 495    pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
 496
 497    --  Condition Initialization / Destruction
 498
 499    function pthread_condattr_init
 500      (attr : access pthread_condattr_t) return int;
 501    pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
 502
 503    function pthread_condattr_destroy
 504      (attr : access pthread_condattr_t) return int;
 505    pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
 506
 507    --  Condition Attributes
 508
 509    COND_PRIORITY  : constant := 0; --   wait in priority order
 510    COND_FIFO      : constant := 1; --   first-in-first-out
 511
 512    --  Condition debugging options
 513
 514    COND_NO_DEBUG  : constant := 0; --   no debugging on mutex
 515    COND_DEBUG     : constant := 1; --   debugging is on
 516
 517    --  Condition sharing attributes
 518
 519    COND_SHARED    : constant := 0; --   shared between processes
 520    COND_NOTSHARED : constant := 1; --   not shared between processes
 521
 522    --  Condition Operations
 523
 524    function pthread_cond_init
 525      (cond : access pthread_cond_t;
 526       attr : access pthread_condattr_t) return int;
 527    pragma Import (C, pthread_cond_init, "pthread_cond_init");
 528
 529    function pthread_cond_destroy
 530      (cond : access pthread_cond_t) return int;
 531    pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
 532
 533    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 534    pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
 535
 536    function pthread_cond_wait
 537      (cond  : access pthread_cond_t;
 538       mutex : access pthread_mutex_t) return int;
 539    pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
 540
 541    function pthread_cond_timedwait
 542      (cond    : access pthread_cond_t;
 543       mutex   : access pthread_mutex_t;
 544       abstime : access struct_timeval) return int;
 545    pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
 546
 547    --  Thread-Specific Data
 548
 549    type foo_h_proc_1 is access procedure (value : Address);
 550
 551    function pthread_key_create
 552      (key : access pthread_key_t; destructor : foo_h_proc_1) return int;
 553    pragma Import (C, pthread_key_create, "pthread_key_create");
 554
 555    function pthread_setspecific
 556      (key : pthread_key_t; value : Address) return int;
 557    pragma Import (C, pthread_setspecific, "pthread_setspecific");
 558
 559    function pthread_getspecific
 560      (key : pthread_key_t; value : access Address) return int;
 561    pragma Import (C, pthread_getspecific, "pthread_getspecific");
 562
 563    type foo_h_proc_2 is access procedure;
 564
 565    function pthread_exec_begin (init : access pthread_init_struct) return int;
 566    pragma Import (C, pthread_exec_begin, "pthread_exec_begin");
 567
 568    function sproc_create
 569      (sproc_id      : access sproc_t;
 570       attr          : access sproc_attr_t;
 571       start_routine : sproc_start_addr;
 572       arg           : Address) return int;
 573    pragma Import (C, sproc_create, "sproc_create");
 574
 575    function sproc_self return sproc_t;
 576    pragma Import (C, sproc_self, "sproc_self");
 577
 578    --  if equal fast TRUE is returned - common case
 579    --  if not equal thread resource must NOT be null in order to compare bits
 580
 581    --
 582    --  Sproc attribute initialize / destroy
 583    --
 584
 585    function sproc_attr_init (attr : access sproc_attr_t) return int;
 586    pragma Import (C, sproc_attr_init, "sproc_attr_init");
 587
 588    function sproc_attr_destroy (attr : access sproc_attr_t) return int;
 589    pragma Import (C, sproc_attr_destroy, "sproc_attr_destroy");
 590
 591    function sproc_attr_setresources
 592      (attr : access sproc_attr_t; resources : resource_t) return int;
 593    pragma Import (C, sproc_attr_setresources, "sproc_attr_setresources");
 594
 595    function sproc_attr_getresources
 596      (attr      : access sproc_attr_t;
 597       resources : access resource_t) return int;
 598    pragma Import (C, sproc_attr_getresources, "sproc_attr_getresources");
 599
 600    function sproc_attr_setcpu
 601      (attr : access sproc_attr_t; cpu_num : int) return int;
 602    pragma Import (C, sproc_attr_setcpu, "sproc_attr_setcpu");
 603
 604    function sproc_attr_getcpu
 605      (attr : access sproc_attr_t; cpu_num : access int) return int;
 606    pragma Import (C, sproc_attr_getcpu, "sproc_attr_getcpu");
 607
 608    function sproc_attr_setresident
 609      (attr : access sproc_attr_t; resident : int) return int;
 610    pragma Import (C, sproc_attr_setresident, "sproc_attr_setresident");
 611
 612    function sproc_attr_getresident
 613      (attr : access sproc_attr_t; resident : access int) return int;
 614    pragma Import (C, sproc_attr_getresident, "sproc_attr_getresident");
 615
 616    function sproc_attr_setname
 617      (attr : access sproc_attr_t; name : chars_ptr) return int;
 618    pragma Import (C, sproc_attr_setname, "sproc_attr_setname");
 619
 620    function sproc_attr_getname
 621      (attr : access sproc_attr_t; name : chars_ptr) return int;
 622    pragma Import (C, sproc_attr_getname, "sproc_attr_getname");
 623
 624    function sproc_attr_setstacksize
 625      (attr : access sproc_attr_t; stacksize : size_t) return int;
 626    pragma Import (C, sproc_attr_setstacksize, "sproc_attr_setstacksize");
 627
 628    function sproc_attr_getstacksize
 629      (attr : access sproc_attr_t; stacksize : access size_t) return int;
 630    pragma Import (C, sproc_attr_getstacksize, "sproc_attr_getstacksize");
 631
 632    function sproc_attr_setprio
 633      (attr : access sproc_attr_t; priority : int) return int;
 634    pragma Import (C, sproc_attr_setprio, "sproc_attr_setprio");
 635
 636    function sproc_attr_getprio
 637      (attr : access sproc_attr_t; priority : access int) return int;
 638    pragma Import (C, sproc_attr_getprio, "sproc_attr_getprio");
 639
 640    function sproc_attr_setbthread
 641      (attr : access sproc_attr_t; bthread : ptcb_p) return int;
 642    pragma Import (C, sproc_attr_setbthread, "sproc_attr_setbthread");
 643
 644    function sproc_attr_getbthread
 645      (attr : access sproc_attr_t; bthread : access ptcb_p) return int;
 646    pragma Import (C, sproc_attr_getbthread, "sproc_attr_getbthread");
 647
 648    SPROC_NO_RESOURCES : constant := 0;
 649    SPROC_ANY_CPU      : constant := -1;
 650    SPROC_MY_PRIORITY  : constant := -1;
 651    SPROC_SWAPPED      : constant := 0;
 652    SPROC_RESIDENT     : constant := 1;
 653
 654    type isr_address is access procedure;
 655
 656    function intr_attach (sig : int; isr : isr_address) return int;
 657    pragma Import (C, intr_attach, "intr_attach");
 658
 659    Intr_Attach_Reset : constant Boolean := False;
 660    --  True if intr_attach is reset after an interrupt handler is called
 661
 662    function intr_exchange
 663      (sig  : int;
 664       isr  : isr_address;
 665       oisr : access isr_address) return int;
 666    pragma Import (C, intr_exchange, "intr_exchange");
 667
 668    function intr_current_isr
 669      (sig  : int;
 670       oisr : access isr_address)
 671      return int;
 672    pragma Import (C, intr_current_isr, "intr_current_isr");
 673
 674 private
 675
 676    type clockid_t is new int;
 677
 678    CLOCK_REALTIME  : constant clockid_t := 1;
 679    CLOCK_SGI_CYCLE : constant clockid_t := 2;
 680    CLOCK_SGI_FAST  : constant clockid_t := 3;
 681
 682    type pthread_t           is new Address; --   thread identifier
 683    type pthread_mutex_t     is new Address; --   mutex identifier
 684    type pthread_cond_t      is new Address; --   cond identifier
 685    type pthread_attr_t      is new Address; --   pthread attributes
 686    type pthread_mutexattr_t is new Address; --   mutex attributes
 687    type pthread_condattr_t  is new Address; --   mutex attributes
 688    type sem_t               is new Address; --   semaphore identifier
 689    type pthread_key_t       is new Address; --   per thread key
 690
 691    type sigbits_t is array (Integer range 0 .. 3) of unsigned;
 692    type sigset_t is record
 693       sigbits : sigbits_t;
 694    end record;
 695    pragma Convention (C, sigset_t);
 696
 697    type pid_t is new long;
 698
 699 end System.OS_Interface;