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.       --
  31 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  32 --                                                                          --
  33 ------------------------------------------------------------------------------
  34
  35 --  This is the SGI Pthreads 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.C;
  45 package System.OS_Interface is
  46
  47    pragma Preelaborate;
  48
  49    pragma Linker_Options ("-lpthread");
  50
  51    subtype int            is Interfaces.C.int;
  52    subtype short          is Interfaces.C.short;
  53    subtype long           is Interfaces.C.long;
  54    subtype unsigned       is Interfaces.C.unsigned;
  55    subtype unsigned_short is Interfaces.C.unsigned_short;
  56    subtype unsigned_long  is Interfaces.C.unsigned_long;
  57    subtype unsigned_char  is Interfaces.C.unsigned_char;
  58    subtype plain_char     is Interfaces.C.plain_char;
  59    subtype size_t         is Interfaces.C.size_t;
  60
  61    -----------
  62    -- Errno --
  63    -----------
  64
  65    function errno return int;
  66    pragma Import (C, errno, "__get_errno");
  67
  68    EINTR     : constant := 4;   --  interrupted system call
  69    EAGAIN    : constant := 11;  --  No more processes
  70    ENOMEM    : constant := 12;  --  Not enough core
  71    EINVAL    : constant := 22;  --  Invalid argument
  72    ETIMEDOUT : constant := 145; --  Connection timed out
  73
  74    -------------
  75    -- Signals --
  76    -------------
  77
  78    Max_Interrupt : constant := 64;
  79    type Signal is new int range 0 .. Max_Interrupt;
  80    for Signal'Size use int'Size;
  81
  82    SIGHUP     : constant := 1; --  hangup
  83    SIGINT     : constant := 2; --  interrupt (rubout)
  84    SIGQUIT    : constant := 3; --  quit (ASCD FS)
  85    SIGILL     : constant := 4; --  illegal instruction (not reset)
  86    SIGTRAP    : constant := 5; --  trace trap (not reset)
  87    SIGIOT     : constant := 6; --  IOT instruction
  88    SIGABRT    : constant := 6; --  used by abort, replace SIGIOT in the
  89    --                              future
  90    SIGEMT     : constant := 7; --  EMT instruction
  91    SIGFPE     : constant := 8; --  floating point exception
  92    SIGKILL    : constant := 9; --  kill (cannot be caught or ignored)
  93    SIGBUS     : constant := 10; --  bus error
  94    SIGSEGV    : constant := 11; --  segmentation violation
  95    SIGSYS     : constant := 12; --  bad argument to system call
  96    SIGPIPE    : constant := 13; --  write on a pipe with no one to read it
  97    SIGALRM    : constant := 14; --  alarm clock
  98    SIGTERM    : constant := 15; --  software termination signal from kill
  99    SIGUSR1    : constant := 16; --  user defined signal 1
 100    SIGUSR2    : constant := 17; --  user defined signal 2
 101    SIGCLD     : constant := 18; --  alias for SIGCHLD
 102    SIGCHLD    : constant := 18; --  child status change
 103    SIGPWR     : constant := 19; --  power-fail restart
 104    SIGWINCH   : constant := 20; --  window size change
 105    SIGURG     : constant := 21; --  urgent condition on IO channel
 106    SIGPOLL    : constant := 22; --  pollable event occurred
 107    SIGIO      : constant := 22; --  I/O possible (Solaris SIGPOLL alias)
 108    SIGSTOP    : constant := 23; --  stop (cannot be caught or ignored)
 109    SIGTSTP    : constant := 24; --  user stop requested from tty
 110    SIGCONT    : constant := 25; --  stopped process has been continued
 111    SIGTTIN    : constant := 26; --  background tty read attempted
 112    SIGTTOU    : constant := 27; --  background tty write attempted
 113    SIGVTALRM  : constant := 28; --  virtual timer expired
 114    SIGPROF    : constant := 29; --  profiling timer expired
 115    SIGXCPU    : constant := 30; --  CPU time limit exceeded
 116    SIGXFSZ    : constant := 31; --  filesize limit exceeded
 117    SIGK32     : constant := 32; --  reserved for kernel (IRIX)
 118    SIGCKPT    : constant := 33; --  Checkpoint warning
 119    SIGRESTART : constant := 34; --  Restart warning
 120    SIGUME     : constant := 35; --  Uncorrectable memory error
 121    --  Signals defined for Posix 1003.1c.
 122    SIGPTINTR    : constant := 47;
 123    SIGPTRESCHED : constant := 48;
 124    --  Posix 1003.1b signals
 125    SIGRTMIN   : constant := 49; --  Posix 1003.1b signals
 126    SIGRTMAX   : constant := 64; --  Posix 1003.1b signals
 127
 128    type sigset_t is private;
 129    type sigset_t_ptr is access all sigset_t;
 130
 131    function sigaddset (set : access sigset_t; sig : Signal) return int;
 132    pragma Import (C, sigaddset, "sigaddset");
 133
 134    function sigdelset (set : access sigset_t; sig : Signal) return int;
 135    pragma Import (C, sigdelset, "sigdelset");
 136
 137    function sigfillset (set : access sigset_t) return int;
 138    pragma Import (C, sigfillset, "sigfillset");
 139
 140    function sigismember (set : access sigset_t; sig : Signal) return int;
 141    pragma Import (C, sigismember, "sigismember");
 142
 143    function sigemptyset (set : access sigset_t) return int;
 144    pragma Import (C, sigemptyset, "sigemptyset");
 145
 146    type array_type_2 is array (Integer range 0 .. 1) of int;
 147    type struct_sigaction is record
 148       sa_flags     : int;
 149       sa_handler   : System.Address;
 150       sa_mask      : sigset_t;
 151       sa_resv      : array_type_2;
 152    end record;
 153    pragma Convention (C, struct_sigaction);
 154
 155    type struct_sigaction_ptr is access all struct_sigaction;
 156
 157    SIG_BLOCK   : constant := 1;
 158    SIG_UNBLOCK : constant := 2;
 159    SIG_SETMASK : constant := 3;
 160
 161    SIG_DFL : constant := 0;
 162    SIG_IGN : constant := 1;
 163
 164    function sigaction
 165      (sig  : Signal;
 166       act  : struct_sigaction_ptr;
 167       oact : struct_sigaction_ptr := null) return int;
 168    pragma Import (C, sigaction, "sigaction");
 169
 170    ----------
 171    -- Time --
 172    ----------
 173
 174    type timespec is private;
 175    type timespec_ptr is access all timespec;
 176
 177    type clockid_t is private;
 178
 179    CLOCK_REALTIME  : constant clockid_t;
 180    CLOCK_SGI_FAST  : constant clockid_t;
 181    CLOCK_SGI_CYCLE : constant clockid_t;
 182
 183    SGI_CYCLECNTR_SIZE : constant := 165;
 184
 185    function syssgi (request : Interfaces.C.int) return Interfaces.C.ptrdiff_t;
 186    pragma Import (C, syssgi, "syssgi");
 187
 188    function clock_gettime
 189      (clock_id : clockid_t;
 190       tp       : access timespec) return int;
 191    pragma Import (C, clock_gettime, "clock_gettime");
 192
 193    function clock_getres
 194      (clock_id : clockid_t;
 195       tp       : access timespec) return int;
 196    pragma Import (C, clock_getres, "clock_getres");
 197
 198    function To_Duration (TS : timespec) return Duration;
 199    pragma Inline (To_Duration);
 200
 201    function To_Timespec (D : Duration) return timespec;
 202    pragma Inline (To_Timespec);
 203
 204    type struct_timeval is private;
 205
 206    function To_Duration (TV : struct_timeval) return Duration;
 207    pragma Inline (To_Duration);
 208
 209    function To_Timeval (D : Duration) return struct_timeval;
 210    pragma Inline (To_Timeval);
 211
 212    -------------------------
 213    -- Priority Scheduling --
 214    -------------------------
 215
 216    SCHED_FIFO  : constant := 1;
 217    SCHED_RR    : constant := 2;
 218    SCHED_TS    : constant := 3;
 219    SCHED_OTHER : constant := 3;
 220    SCHED_NP    : constant := 4;
 221
 222    function sched_get_priority_min (Policy : int) return int;
 223    pragma Import (C, sched_get_priority_min, "sched_get_priority_min");
 224
 225    function sched_get_priority_max (Policy : int) return int;
 226    pragma Import (C, sched_get_priority_max, "sched_get_priority_max");
 227
 228    -------------
 229    -- Process --
 230    -------------
 231
 232    type pid_t is private;
 233
 234    function kill (pid : pid_t; sig : Signal) return int;
 235    pragma Import (C, kill, "kill");
 236
 237    function getpid return pid_t;
 238    pragma Import (C, getpid, "getpid");
 239
 240    -------------
 241    -- Threads --
 242    -------------
 243
 244    type Thread_Body is access
 245      function (arg : System.Address) return System.Address;
 246    type pthread_t           is private;
 247    subtype Thread_Id        is pthread_t;
 248
 249    type pthread_mutex_t     is limited private;
 250    type pthread_cond_t      is limited private;
 251    type pthread_attr_t      is limited private;
 252    type pthread_mutexattr_t is limited private;
 253    type pthread_condattr_t  is limited private;
 254    type pthread_key_t       is private;
 255
 256    PTHREAD_CREATE_DETACHED : constant := 1;
 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    -- POSIX.1c  Section 3 --
 268    -------------------------
 269
 270    function sigwait
 271      (set : access sigset_t;
 272       sig : access Signal) return int;
 273    pragma Import (C, sigwait, "sigwait");
 274
 275    function pthread_kill
 276      (thread : pthread_t;
 277       sig    : Signal) return int;
 278    pragma Import (C, pthread_kill, "pthread_kill");
 279
 280    function pthread_sigmask
 281      (how  : int;
 282       set  : sigset_t_ptr;
 283       oset : sigset_t_ptr) return int;
 284    pragma Import (C, pthread_sigmask, "pthread_sigmask");
 285
 286    --------------------------
 287    -- POSIX.1c  Section 11 --
 288    --------------------------
 289
 290    function pthread_mutexattr_init
 291      (attr : access pthread_mutexattr_t) return int;
 292    pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
 293
 294    function pthread_mutexattr_destroy
 295      (attr : access pthread_mutexattr_t) return int;
 296    pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
 297
 298    function pthread_mutex_init
 299      (mutex : access pthread_mutex_t;
 300       attr  : access pthread_mutexattr_t) return int;
 301    pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
 302
 303    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 304    pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
 305
 306    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 307    pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
 308
 309    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 310    pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
 311
 312    function pthread_condattr_init
 313      (attr : access pthread_condattr_t) return int;
 314    pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
 315
 316    function pthread_condattr_destroy
 317      (attr : access pthread_condattr_t) return int;
 318    pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
 319
 320    function pthread_cond_init
 321      (cond : access pthread_cond_t;
 322       attr : access pthread_condattr_t) return int;
 323    pragma Import (C, pthread_cond_init, "pthread_cond_init");
 324
 325    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 326    pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
 327
 328    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 329    pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
 330
 331    function pthread_cond_wait
 332      (cond  : access pthread_cond_t;
 333       mutex : access pthread_mutex_t) return int;
 334    pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
 335
 336    function pthread_cond_timedwait
 337      (cond    : access pthread_cond_t;
 338       mutex   : access pthread_mutex_t;
 339       abstime : access timespec) return int;
 340    pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
 341
 342    --------------------------
 343    -- POSIX.1c  Section 13 --
 344    --------------------------
 345
 346    PTHREAD_PRIO_NONE    : constant := 0;
 347    PTHREAD_PRIO_PROTECT : constant := 2;
 348    PTHREAD_PRIO_INHERIT : constant := 1;
 349
 350    function pthread_mutexattr_setprotocol
 351      (attr     : access pthread_mutexattr_t;
 352       protocol : int) return int;
 353    pragma Import (C, pthread_mutexattr_setprotocol);
 354
 355    function pthread_mutexattr_setprioceiling
 356      (attr     : access pthread_mutexattr_t;
 357       prioceiling : int) return int;
 358    pragma Import (C, pthread_mutexattr_setprioceiling);
 359
 360    type struct_sched_param is record
 361       sched_priority : int;
 362    end record;
 363    pragma Convention (C, struct_sched_param);
 364
 365    function pthread_setschedparam
 366      (thread : pthread_t;
 367       policy : int;
 368       param  : access struct_sched_param)
 369      return int;
 370    pragma Import (C, pthread_setschedparam, "pthread_setschedparam");
 371
 372    function pthread_attr_setscope
 373      (attr            : access pthread_attr_t;
 374       contentionscope : int) return int;
 375    pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
 376
 377    function pthread_attr_setinheritsched
 378      (attr         : access pthread_attr_t;
 379       inheritsched : int) return int;
 380    pragma Import
 381      (C, pthread_attr_setinheritsched, "pthread_attr_setinheritsched");
 382
 383    function pthread_attr_setschedpolicy
 384      (attr   : access pthread_attr_t;
 385       policy : int) return int;
 386    pragma Import (C, pthread_attr_setschedpolicy);
 387
 388    function pthread_attr_setschedparam
 389      (attr        : access pthread_attr_t;
 390       sched_param : access struct_sched_param)
 391      return int;
 392    pragma Import (C, pthread_attr_setschedparam, "pthread_attr_setschedparam");
 393
 394    function sched_yield return int;
 395    pragma Import (C, sched_yield, "sched_yield");
 396
 397    ---------------------------
 398    -- P1003.1c - Section 16 --
 399    ---------------------------
 400
 401    function pthread_attr_init (attributes : access pthread_attr_t) return int;
 402    pragma Import (C, pthread_attr_init, "pthread_attr_init");
 403
 404    function pthread_attr_destroy
 405      (attributes : access pthread_attr_t) return int;
 406    pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
 407
 408    function pthread_attr_setdetachstate
 409      (attr        : access pthread_attr_t;
 410       detachstate : int) return int;
 411    pragma Import (C, pthread_attr_setdetachstate);
 412
 413    function pthread_attr_setstacksize
 414      (attr      : access pthread_attr_t;
 415       stacksize : size_t) return int;
 416    pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize");
 417
 418    function pthread_create
 419      (thread        : access pthread_t;
 420       attributes    : access pthread_attr_t;
 421       start_routine : Thread_Body;
 422       arg           : System.Address) return int;
 423    pragma Import (C, pthread_create, "pthread_create");
 424
 425    procedure pthread_exit (status : System.Address);
 426    pragma Import (C, pthread_exit, "pthread_exit");
 427
 428    function pthread_self return pthread_t;
 429    pragma Import (C, pthread_self, "pthread_self");
 430
 431    --------------------------
 432    -- POSIX.1c  Section 17 --
 433    --------------------------
 434
 435    function pthread_setspecific
 436      (key   : pthread_key_t;
 437       value : System.Address) return int;
 438    pragma Import (C, pthread_setspecific, "pthread_setspecific");
 439
 440    function pthread_getspecific (key : pthread_key_t) return System.Address;
 441    pragma Import (C, pthread_getspecific, "pthread_getspecific");
 442
 443    type destructor_pointer is access procedure (arg : System.Address);
 444
 445    function pthread_key_create
 446      (key        : access pthread_key_t;
 447       destructor : destructor_pointer) return int;
 448    pragma Import (C, pthread_key_create, "pthread_key_create");
 449
 450    ---------------------------------------------------------------
 451    --  Non portable SGI 6.5 additions to the pthread interface  --
 452    --  must be executed from within the context of a system     --
 453    --  scope task                                               --
 454    ---------------------------------------------------------------
 455
 456    function pthread_setrunon_np (cpu : int) return int;
 457    pragma Import (C, pthread_setrunon_np, "pthread_setrunon_np");
 458
 459 private
 460
 461    type array_type_1 is array (Integer range 0 .. 3) of unsigned;
 462    type sigset_t is record
 463       X_X_sigbits : array_type_1;
 464    end record;
 465    pragma Convention (C, sigset_t);
 466
 467    type pid_t is new long;
 468
 469    type time_t is new long;
 470
 471    type timespec is record
 472       tv_sec  : time_t;
 473       tv_nsec : long;
 474    end record;
 475    pragma Convention (C, timespec);
 476
 477    type clockid_t is new int;
 478    CLOCK_REALTIME  : constant clockid_t := 1;
 479    CLOCK_SGI_CYCLE : constant clockid_t := 2;
 480    CLOCK_SGI_FAST  : constant clockid_t := 3;
 481
 482    type struct_timeval is record
 483       tv_sec  : time_t;
 484       tv_usec : time_t;
 485    end record;
 486    pragma Convention (C, struct_timeval);
 487
 488    type array_type_9 is array (Integer range 0 .. 4) of long;
 489    type pthread_attr_t is record
 490       X_X_D : array_type_9;
 491    end record;
 492    pragma Convention (C, pthread_attr_t);
 493
 494    type array_type_8 is array (Integer range 0 .. 1) of long;
 495    type pthread_condattr_t is record
 496       X_X_D : array_type_8;
 497    end record;
 498    pragma Convention (C, pthread_condattr_t);
 499
 500    type array_type_7 is array (Integer range 0 .. 1) of long;
 501    type pthread_mutexattr_t is record
 502       X_X_D : array_type_7;
 503    end record;
 504    pragma Convention (C, pthread_mutexattr_t);
 505
 506    type pthread_t is new unsigned;
 507
 508    type array_type_10 is array (Integer range 0 .. 7) of long;
 509    type pthread_mutex_t is record
 510       X_X_D : array_type_10;
 511    end record;
 512    pragma Convention (C, pthread_mutex_t);
 513
 514    type array_type_11 is array (Integer range 0 .. 7) of long;
 515    type pthread_cond_t is record
 516       X_X_D : array_type_11;
 517    end record;
 518    pragma Convention (C, pthread_cond_t);
 519
 520    type pthread_key_t is new int;
 521
 522 end System.OS_Interface;