gcc/ada/5fosinte.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) 1998-2001, 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 the SGI Pthreads 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.C;
  46 package System.OS_Interface is
  47
  48    pragma Preelaborate;
  49
  50    pragma Linker_Options ("-lpthread");
  51
  52    subtype int            is Interfaces.C.int;
  53    subtype short          is Interfaces.C.short;
  54    subtype long           is Interfaces.C.long;
  55    subtype unsigned       is Interfaces.C.unsigned;
  56    subtype unsigned_short is Interfaces.C.unsigned_short;
  57    subtype unsigned_long  is Interfaces.C.unsigned_long;
  58    subtype unsigned_char  is Interfaces.C.unsigned_char;
  59    subtype plain_char     is Interfaces.C.plain_char;
  60    subtype size_t         is Interfaces.C.size_t;
  61
  62    -----------
  63    -- Errno --
  64    -----------
  65
  66    function errno return int;
  67    pragma Import (C, errno, "__get_errno");
  68
  69    EINTR     : constant := 4;   --  interrupted system call
  70    EAGAIN    : constant := 11;  --  No more processes
  71    ENOMEM    : constant := 12;  --  Not enough core
  72    EINVAL    : constant := 22;  --  Invalid argument
  73    ETIMEDOUT : constant := 145; --  Connection timed out
  74
  75    -------------
  76    -- Signals --
  77    -------------
  78
  79    Max_Interrupt : constant := 64;
  80    type Signal is new int range 0 .. Max_Interrupt;
  81    for Signal'Size use int'Size;
  82
  83    SIGHUP     : constant := 1; --  hangup
  84    SIGINT     : constant := 2; --  interrupt (rubout)
  85    SIGQUIT    : constant := 3; --  quit (ASCD FS)
  86    SIGILL     : constant := 4; --  illegal instruction (not reset)
  87    SIGTRAP    : constant := 5; --  trace trap (not reset)
  88    SIGIOT     : constant := 6; --  IOT instruction
  89    SIGABRT    : constant := 6; --  used by abort, replace SIGIOT in the
  90    --                              future
  91    SIGEMT     : constant := 7; --  EMT instruction
  92    SIGFPE     : constant := 8; --  floating point exception
  93    SIGKILL    : constant := 9; --  kill (cannot be caught or ignored)
  94    SIGBUS     : constant := 10; --  bus error
  95    SIGSEGV    : constant := 11; --  segmentation violation
  96    SIGSYS     : constant := 12; --  bad argument to system call
  97    SIGPIPE    : constant := 13; --  write on a pipe with no one to read it
  98    SIGALRM    : constant := 14; --  alarm clock
  99    SIGTERM    : constant := 15; --  software termination signal from kill
 100    SIGUSR1    : constant := 16; --  user defined signal 1
 101    SIGUSR2    : constant := 17; --  user defined signal 2
 102    SIGCLD     : constant := 18; --  alias for SIGCHLD
 103    SIGCHLD    : constant := 18; --  child status change
 104    SIGPWR     : constant := 19; --  power-fail restart
 105    SIGWINCH   : constant := 20; --  window size change
 106    SIGURG     : constant := 21; --  urgent condition on IO channel
 107    SIGPOLL    : constant := 22; --  pollable event occurred
 108    SIGIO      : constant := 22; --  I/O possible (Solaris SIGPOLL alias)
 109    SIGSTOP    : constant := 23; --  stop (cannot be caught or ignored)
 110    SIGTSTP    : constant := 24; --  user stop requested from tty
 111    SIGCONT    : constant := 25; --  stopped process has been continued
 112    SIGTTIN    : constant := 26; --  background tty read attempted
 113    SIGTTOU    : constant := 27; --  background tty write attempted
 114    SIGVTALRM  : constant := 28; --  virtual timer expired
 115    SIGPROF    : constant := 29; --  profiling timer expired
 116    SIGXCPU    : constant := 30; --  CPU time limit exceeded
 117    SIGXFSZ    : constant := 31; --  filesize limit exceeded
 118    SIGK32     : constant := 32; --  reserved for kernel (IRIX)
 119    SIGCKPT    : constant := 33; --  Checkpoint warning
 120    SIGRESTART : constant := 34; --  Restart warning
 121    SIGUME     : constant := 35; --  Uncorrectable memory error
 122    --  Signals defined for Posix 1003.1c.
 123    SIGPTINTR    : constant := 47;
 124    SIGPTRESCHED : constant := 48;
 125    --  Posix 1003.1b signals
 126    SIGRTMIN   : constant := 49; --  Posix 1003.1b signals
 127    SIGRTMAX   : constant := 64; --  Posix 1003.1b signals
 128
 129    type sigset_t is private;
 130    type sigset_t_ptr is access all sigset_t;
 131
 132    function sigaddset (set : access sigset_t; sig : Signal) return int;
 133    pragma Import (C, sigaddset, "sigaddset");
 134
 135    function sigdelset (set : access sigset_t; sig : Signal) return int;
 136    pragma Import (C, sigdelset, "sigdelset");
 137
 138    function sigfillset (set : access sigset_t) return int;
 139    pragma Import (C, sigfillset, "sigfillset");
 140
 141    function sigismember (set : access sigset_t; sig : Signal) return int;
 142    pragma Import (C, sigismember, "sigismember");
 143
 144    function sigemptyset (set : access sigset_t) return int;
 145    pragma Import (C, sigemptyset, "sigemptyset");
 146
 147    type array_type_2 is array (Integer range 0 .. 1) of int;
 148    type struct_sigaction is record
 149       sa_flags     : int;
 150       sa_handler   : System.Address;
 151       sa_mask      : sigset_t;
 152       sa_resv      : array_type_2;
 153    end record;
 154    pragma Convention (C, struct_sigaction);
 155
 156    type struct_sigaction_ptr is access all struct_sigaction;
 157
 158    SIG_BLOCK   : constant := 1;
 159    SIG_UNBLOCK : constant := 2;
 160    SIG_SETMASK : constant := 3;
 161
 162    SIG_DFL : constant := 0;
 163    SIG_IGN : constant := 1;
 164
 165    function sigaction
 166      (sig  : Signal;
 167       act  : struct_sigaction_ptr;
 168       oact : struct_sigaction_ptr := null) return int;
 169    pragma Import (C, sigaction, "sigaction");
 170
 171    ----------
 172    -- Time --
 173    ----------
 174
 175    type timespec is private;
 176    type timespec_ptr is access all timespec;
 177
 178    type clockid_t is private;
 179
 180    CLOCK_REALTIME  : constant clockid_t;
 181    CLOCK_SGI_FAST  : constant clockid_t;
 182    CLOCK_SGI_CYCLE : constant clockid_t;
 183
 184    SGI_CYCLECNTR_SIZE : constant := 165;
 185
 186    function syssgi (request : Interfaces.C.int) return Interfaces.C.ptrdiff_t;
 187    pragma Import (C, syssgi, "syssgi");
 188
 189    function clock_gettime
 190      (clock_id : clockid_t;
 191       tp       : access timespec) return int;
 192    pragma Import (C, clock_gettime, "clock_gettime");
 193
 194    function clock_getres
 195      (clock_id : clockid_t;
 196       tp       : access timespec) return int;
 197    pragma Import (C, clock_getres, "clock_getres");
 198
 199    function To_Duration (TS : timespec) return Duration;
 200    pragma Inline (To_Duration);
 201
 202    function To_Timespec (D : Duration) return timespec;
 203    pragma Inline (To_Timespec);
 204
 205    type struct_timeval is private;
 206
 207    function To_Duration (TV : struct_timeval) return Duration;
 208    pragma Inline (To_Duration);
 209
 210    function To_Timeval (D : Duration) return struct_timeval;
 211    pragma Inline (To_Timeval);
 212
 213    -------------------------
 214    -- Priority Scheduling --
 215    -------------------------
 216
 217    SCHED_FIFO  : constant := 1;
 218    SCHED_RR    : constant := 2;
 219    SCHED_TS    : constant := 3;
 220    SCHED_OTHER : constant := 3;
 221    SCHED_NP    : constant := 4;
 222
 223    function sched_get_priority_min (Policy : int) return int;
 224    pragma Import (C, sched_get_priority_min, "sched_get_priority_min");
 225
 226    function sched_get_priority_max (Policy : int) return int;
 227    pragma Import (C, sched_get_priority_max, "sched_get_priority_max");
 228
 229    -------------
 230    -- Process --
 231    -------------
 232
 233    type pid_t is private;
 234
 235    function kill (pid : pid_t; sig : Signal) return int;
 236    pragma Import (C, kill, "kill");
 237
 238    function getpid return pid_t;
 239    pragma Import (C, getpid, "getpid");
 240
 241    -------------
 242    -- Threads --
 243    -------------
 244
 245    type Thread_Body is access
 246      function (arg : System.Address) return System.Address;
 247    type pthread_t           is private;
 248    subtype Thread_Id        is pthread_t;
 249
 250    type pthread_mutex_t     is limited private;
 251    type pthread_cond_t      is limited private;
 252    type pthread_attr_t      is limited private;
 253    type pthread_mutexattr_t is limited private;
 254    type pthread_condattr_t  is limited private;
 255    type pthread_key_t       is private;
 256
 257    PTHREAD_CREATE_DETACHED : constant := 1;
 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    -- POSIX.1c  Section 3 --
 269    -------------------------
 270
 271    function sigwait
 272      (set : access sigset_t;
 273       sig : access Signal) return int;
 274    pragma Import (C, sigwait, "sigwait");
 275
 276    function pthread_kill
 277      (thread : pthread_t;
 278       sig    : Signal) return int;
 279    pragma Import (C, pthread_kill, "pthread_kill");
 280
 281    function pthread_sigmask
 282      (how  : int;
 283       set  : sigset_t_ptr;
 284       oset : sigset_t_ptr) return int;
 285    pragma Import (C, pthread_sigmask, "pthread_sigmask");
 286
 287    --------------------------
 288    -- POSIX.1c  Section 11 --
 289    --------------------------
 290
 291    function pthread_mutexattr_init
 292      (attr : access pthread_mutexattr_t) return int;
 293    pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
 294
 295    function pthread_mutexattr_destroy
 296      (attr : access pthread_mutexattr_t) return int;
 297    pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
 298
 299    function pthread_mutex_init
 300      (mutex : access pthread_mutex_t;
 301       attr  : access pthread_mutexattr_t) return int;
 302    pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
 303
 304    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 305    pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
 306
 307    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 308    pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
 309
 310    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 311    pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
 312
 313    function pthread_condattr_init
 314      (attr : access pthread_condattr_t) return int;
 315    pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
 316
 317    function pthread_condattr_destroy
 318      (attr : access pthread_condattr_t) return int;
 319    pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
 320
 321    function pthread_cond_init
 322      (cond : access pthread_cond_t;
 323       attr : access pthread_condattr_t) return int;
 324    pragma Import (C, pthread_cond_init, "pthread_cond_init");
 325
 326    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 327    pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
 328
 329    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 330    pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
 331
 332    function pthread_cond_wait
 333      (cond  : access pthread_cond_t;
 334       mutex : access pthread_mutex_t) return int;
 335    pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
 336
 337    function pthread_cond_timedwait
 338      (cond    : access pthread_cond_t;
 339       mutex   : access pthread_mutex_t;
 340       abstime : access timespec) return int;
 341    pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
 342
 343    --------------------------
 344    -- POSIX.1c  Section 13 --
 345    --------------------------
 346
 347    PTHREAD_PRIO_NONE    : constant := 0;
 348    PTHREAD_PRIO_PROTECT : constant := 2;
 349    PTHREAD_PRIO_INHERIT : constant := 1;
 350
 351    function pthread_mutexattr_setprotocol
 352      (attr     : access pthread_mutexattr_t;
 353       protocol : int) return int;
 354    pragma Import (C, pthread_mutexattr_setprotocol);
 355
 356    function pthread_mutexattr_setprioceiling
 357      (attr     : access pthread_mutexattr_t;
 358       prioceiling : int) return int;
 359    pragma Import (C, pthread_mutexattr_setprioceiling);
 360
 361    type struct_sched_param is record
 362       sched_priority : int;
 363    end record;
 364    pragma Convention (C, struct_sched_param);
 365
 366    function pthread_setschedparam
 367      (thread : pthread_t;
 368       policy : int;
 369       param  : access struct_sched_param)
 370      return int;
 371    pragma Import (C, pthread_setschedparam, "pthread_setschedparam");
 372
 373    function pthread_attr_setscope
 374      (attr            : access pthread_attr_t;
 375       contentionscope : int) return int;
 376    pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
 377
 378    function pthread_attr_setinheritsched
 379      (attr         : access pthread_attr_t;
 380       inheritsched : int) return int;
 381    pragma Import
 382      (C, pthread_attr_setinheritsched, "pthread_attr_setinheritsched");
 383
 384    function pthread_attr_setschedpolicy
 385      (attr   : access pthread_attr_t;
 386       policy : int) return int;
 387    pragma Import (C, pthread_attr_setschedpolicy);
 388
 389    function pthread_attr_setschedparam
 390      (attr        : access pthread_attr_t;
 391       sched_param : access struct_sched_param)
 392      return int;
 393    pragma Import (C, pthread_attr_setschedparam, "pthread_attr_setschedparam");
 394
 395    function sched_yield return int;
 396    pragma Import (C, sched_yield, "sched_yield");
 397
 398    ---------------------------
 399    -- P1003.1c - Section 16 --
 400    ---------------------------
 401
 402    function pthread_attr_init (attributes : access pthread_attr_t) return int;
 403    pragma Import (C, pthread_attr_init, "pthread_attr_init");
 404
 405    function pthread_attr_destroy
 406      (attributes : access pthread_attr_t) return int;
 407    pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
 408
 409    function pthread_attr_setdetachstate
 410      (attr        : access pthread_attr_t;
 411       detachstate : int) return int;
 412    pragma Import (C, pthread_attr_setdetachstate);
 413
 414    function pthread_attr_setstacksize
 415      (attr      : access pthread_attr_t;
 416       stacksize : size_t) return int;
 417    pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize");
 418
 419    function pthread_create
 420      (thread        : access pthread_t;
 421       attributes    : access pthread_attr_t;
 422       start_routine : Thread_Body;
 423       arg           : System.Address) return int;
 424    pragma Import (C, pthread_create, "pthread_create");
 425
 426    procedure pthread_exit (status : System.Address);
 427    pragma Import (C, pthread_exit, "pthread_exit");
 428
 429    function pthread_self return pthread_t;
 430    pragma Import (C, pthread_self, "pthread_self");
 431
 432    --------------------------
 433    -- POSIX.1c  Section 17 --
 434    --------------------------
 435
 436    function pthread_setspecific
 437      (key   : pthread_key_t;
 438       value : System.Address) return int;
 439    pragma Import (C, pthread_setspecific, "pthread_setspecific");
 440
 441    function pthread_getspecific (key : pthread_key_t) return System.Address;
 442    pragma Import (C, pthread_getspecific, "pthread_getspecific");
 443
 444    type destructor_pointer is access procedure (arg : System.Address);
 445
 446    function pthread_key_create
 447      (key        : access pthread_key_t;
 448       destructor : destructor_pointer) return int;
 449    pragma Import (C, pthread_key_create, "pthread_key_create");
 450
 451    ---------------------------------------------------------------
 452    --  Non portable SGI 6.5 additions to the pthread interface  --
 453    --  must be executed from within the context of a system     --
 454    --  scope task                                               --
 455    ---------------------------------------------------------------
 456
 457    function pthread_setrunon_np (cpu : int) return int;
 458    pragma Import (C, pthread_setrunon_np, "pthread_setrunon_np");
 459
 460 private
 461
 462    type array_type_1 is array (Integer range 0 .. 3) of unsigned;
 463    type sigset_t is record
 464       X_X_sigbits : array_type_1;
 465    end record;
 466    pragma Convention (C, sigset_t);
 467
 468    type pid_t is new long;
 469
 470    type time_t is new long;
 471
 472    type timespec is record
 473       tv_sec  : time_t;
 474       tv_nsec : long;
 475    end record;
 476    pragma Convention (C, timespec);
 477
 478    type clockid_t is new int;
 479    CLOCK_REALTIME  : constant clockid_t := 1;
 480    CLOCK_SGI_CYCLE : constant clockid_t := 2;
 481    CLOCK_SGI_FAST  : constant clockid_t := 3;
 482
 483    type struct_timeval is record
 484       tv_sec  : time_t;
 485       tv_usec : time_t;
 486    end record;
 487    pragma Convention (C, struct_timeval);
 488
 489    type array_type_9 is array (Integer range 0 .. 4) of long;
 490    type pthread_attr_t is record
 491       X_X_D : array_type_9;
 492    end record;
 493    pragma Convention (C, pthread_attr_t);
 494
 495    type array_type_8 is array (Integer range 0 .. 1) of long;
 496    type pthread_condattr_t is record
 497       X_X_D : array_type_8;
 498    end record;
 499    pragma Convention (C, pthread_condattr_t);
 500
 501    type array_type_7 is array (Integer range 0 .. 1) of long;
 502    type pthread_mutexattr_t is record
 503       X_X_D : array_type_7;
 504    end record;
 505    pragma Convention (C, pthread_mutexattr_t);
 506
 507    type pthread_t is new unsigned;
 508
 509    type array_type_10 is array (Integer range 0 .. 7) of long;
 510    type pthread_mutex_t is record
 511       X_X_D : array_type_10;
 512    end record;
 513    pragma Convention (C, pthread_mutex_t);
 514
 515    type array_type_11 is array (Integer range 0 .. 7) of long;
 516    type pthread_cond_t is record
 517       X_X_D : array_type_11;
 518    end record;
 519    pragma Convention (C, pthread_cond_t);
 520
 521    type pthread_key_t is new int;
 522
 523 end System.OS_Interface;