gcc/ada/5aosinte.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 --                             $Revision: 1.23 $
  10 --                                                                          --
  11 --           Copyright (C) 1998-2001 Free Software Foundation, Inc.         --
  12 --                                                                          --
  13 -- GNARL is free software; you can  redistribute it  and/or modify it under --
  14 -- terms of the  GNU General Public License as published  by the Free Soft- --
  15 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  16 -- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
  17 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  18 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  19 -- for  more details.  You should have  received  a copy of the GNU General --
  20 -- Public License  distributed with GNARL; see file COPYING.  If not, write --
  21 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  22 -- MA 02111-1307, USA.                                                      --
  23 --                                                                          --
  24 -- As a special exception,  if other files  instantiate  generics from this --
  25 -- unit, or you link  this unit with other files  to produce an executable, --
  26 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  27 -- covered  by the  GNU  General  Public  License.  This exception does not --
  28 -- however invalidate  any other reasons why  the executable file  might be --
  29 -- covered by the  GNU Public License.                                      --
  30 --                                                                          --
  31 -- GNARL was developed by the GNARL team at Florida State University. It is --
  32 -- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
  33 -- State University (http://www.gnat.com).                                  --
  34 --                                                                          --
  35 ------------------------------------------------------------------------------
  36
  37 --  This is the DEC Unix 4.0/5.1 version of this package.
  38
  39 --  This package encapsulates all direct interfaces to OS services
  40 --  that are needed by children of System.
  41
  42 --  PLEASE DO NOT add any with-clauses to this package
  43 --  It is designed to be a bottom-level (leaf) package.
  44
  45 with Interfaces.C;
  46 package System.OS_Interface is
  47    pragma Preelaborate;
  48
  49    pragma Linker_Options ("-lpthread");
  50    pragma Linker_Options ("-lmach");
  51    pragma Linker_Options ("-lexc");
  52    pragma Linker_Options ("-lrt");
  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 char_array     is Interfaces.C.char_array;
  64
  65    -----------
  66    -- Errno --
  67    -----------
  68
  69    function errno return int;
  70    pragma Import (C, errno, "_Geterrno");
  71
  72    EAGAIN    : constant := 35;
  73    EINTR     : constant := 4;
  74    EINVAL    : constant := 22;
  75    ENOMEM    : constant := 12;
  76    ETIMEDOUT : constant := 60;
  77
  78    -------------
  79    -- Signals --
  80    -------------
  81
  82    Max_Interrupt : constant := 48;
  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    SIGABRT    : constant := 6; --  used by abort, replace SIGIOT in the  future
  92    SIGIOT     : constant := 6; --  abort (terminate) process
  93    SIGLOST    : constant := 6; --  old BSD signal ??
  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    SIGURG     : constant := 16; --  urgent condition on IO channel
 104    SIGIOINT   : constant := 16; --  printer to backend error signal
 105    SIGSTOP    : constant := 17; --  stop (cannot be caught or ignored)
 106    SIGTSTP    : constant := 18; --  user stop requested from tty
 107    SIGCONT    : constant := 19; --  stopped process has been continued
 108    SIGCHLD    : constant := 20; --  child status change
 109    SIGTTIN    : constant := 21; --  background tty read attempted
 110    SIGTTOU    : constant := 22; --  background tty write attempted
 111    SIGPOLL    : constant := 23; --  I/O possible, or completed
 112    SIGIO      : constant := 23; --  STREAMS version of SIGPOLL
 113    SIGAIO     : constant := 23; --  base lan i/o
 114    SIGPTY     : constant := 23; --  pty i/o
 115    SIGXCPU    : constant := 24; --  CPU time limit exceeded
 116    SIGXFSZ    : constant := 25; --  filesize limit exceeded
 117    SIGVTALRM  : constant := 26; --  virtual timer expired
 118    SIGPROF    : constant := 27; --  profiling timer expired
 119    SIGWINCH   : constant := 28; --  window size change
 120    SIGINFO    : constant := 29; --  information request
 121    SIGPWR     : constant := 29; --  Power Fail/Restart -- SVID3/SVR4
 122    SIGUSR1    : constant := 30; --  user defined signal 1
 123    SIGUSR2    : constant := 31; --  user defined signal 2
 124    SIGRESV    : constant := 32; --  reserved by Digital for future use
 125
 126    SIGADAABORT : constant := SIGABRT;
 127
 128    type Signal_Set is array (Natural range <>) of Signal;
 129
 130    Unmasked    : constant Signal_Set := (0 .. 0 => SIGTRAP);
 131    Reserved    : constant Signal_Set := (SIGALRM, SIGABRT, SIGKILL, SIGSTOP);
 132
 133    type sigset_t is private;
 134
 135    function sigaddset (set : access sigset_t; sig : Signal) return int;
 136    pragma Import (C, sigaddset);
 137
 138    function sigdelset (set : access sigset_t; sig : Signal) return int;
 139    pragma Import (C, sigdelset);
 140
 141    function sigfillset (set : access sigset_t) return int;
 142    pragma Import (C, sigfillset);
 143
 144    function sigismember (set : access sigset_t; sig : Signal) return int;
 145    pragma Import (C, sigismember);
 146
 147    function sigemptyset (set : access sigset_t) return int;
 148    pragma Import (C, sigemptyset);
 149
 150    type union_type_3 is new String (1 .. 116);
 151    type siginfo_t is record
 152       si_signo     : int;
 153       si_errno     : int;
 154       si_code      : int;
 155       X_data       : union_type_3;
 156    end record;
 157    for siginfo_t'Size use 8 * 128;
 158    pragma Convention (C, siginfo_t);
 159
 160    type struct_sigaction is record
 161       sa_handler : System.Address;
 162       sa_mask    : sigset_t;
 163       sa_flags   : int;
 164       sa_signo   : int;
 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    SA_NODEFER : constant := 8;
 177    SA_SIGINFO : constant := 16#40#;
 178
 179    function sigaction
 180      (sig  : Signal;
 181       act  : struct_sigaction_ptr;
 182       oact : struct_sigaction_ptr) return int;
 183    pragma Import (C, sigaction);
 184
 185    ----------
 186    -- Time --
 187    ----------
 188
 189    type timespec is private;
 190
 191    function nanosleep (rqtp, rmtp : access timespec)  return int;
 192    pragma Import (C, nanosleep);
 193
 194    type clockid_t is private;
 195
 196    CLOCK_REALTIME : constant clockid_t;
 197
 198    function clock_gettime
 199      (clock_id : clockid_t;
 200       tp       : access timespec) return int;
 201    pragma Import (C, clock_gettime);
 202
 203    function To_Duration (TS : timespec) return Duration;
 204    pragma Inline (To_Duration);
 205
 206    function To_Timespec (D : Duration) return timespec;
 207    pragma Inline (To_Timespec);
 208
 209    type struct_timezone is record
 210       tz_minuteswest : int;
 211       tz_dsttime     : int;
 212    end record;
 213    pragma Convention (C, struct_timezone);
 214    type struct_timeval is private;
 215    --  This is needed on systems that do not have clock_gettime()
 216    --  but do have gettimeofday().
 217
 218    function To_Duration (TV : struct_timeval) return Duration;
 219    pragma Inline (To_Duration);
 220
 221    function To_Timeval (D : Duration) return struct_timeval;
 222    pragma Inline (To_Timeval);
 223
 224    -------------------------
 225    -- Priority Scheduling --
 226    -------------------------
 227
 228    SCHED_FIFO  : constant := 1;
 229    SCHED_RR    : constant := 2;
 230    SCHED_OTHER : constant := 3;
 231    SCHED_LFI   : constant := 5;
 232
 233    -------------
 234    -- Process --
 235    -------------
 236
 237    type pid_t is private;
 238
 239    function kill (pid : pid_t; sig : Signal) return int;
 240    pragma Import (C, kill);
 241
 242    function getpid return pid_t;
 243    pragma Import (C, getpid);
 244
 245    BIND_NO_INHERIT  : constant := 1;
 246
 247    function bind_to_cpu
 248      (pid       : pid_t;
 249       cpu_mask  : unsigned_long;
 250       flag      : unsigned_long := BIND_NO_INHERIT) return int;
 251    pragma Import (C, bind_to_cpu);
 252
 253    -------------
 254    -- Threads --
 255    -------------
 256
 257    type Thread_Body is access
 258      function (arg : System.Address) return System.Address;
 259    type pthread_t           is private;
 260    subtype Thread_Id        is pthread_t;
 261
 262    type pthread_mutex_t     is limited private;
 263    type pthread_cond_t      is limited private;
 264    type pthread_attr_t      is limited private;
 265    type pthread_mutexattr_t is limited private;
 266    type pthread_condattr_t  is limited private;
 267    type pthread_key_t       is private;
 268
 269    PTHREAD_CREATE_DETACHED : constant := 1;
 270
 271    PTHREAD_SCOPE_PROCESS : constant := 0;
 272    PTHREAD_SCOPE_SYSTEM  : constant := 1;
 273
 274    PTHREAD_EXPLICIT_SCHED : constant := 1;
 275
 276    ---------------------------------------
 277    -- Nonstandard Thread Initialization --
 278    ---------------------------------------
 279
 280    procedure pthread_init;
 281    pragma Inline (pthread_init);
 282    --  This is a dummy procedure to share some GNULLI files
 283
 284    ---------------------------
 285    --  POSIX.1c  Section 3  --
 286    ---------------------------
 287
 288    function sigwait
 289      (set : access sigset_t;
 290       sig : access Signal) return int;
 291    pragma Import (C, sigwait, "__sigwaitd10");
 292
 293    function pthread_kill
 294      (thread : pthread_t;
 295       sig    : Signal) return int;
 296    pragma Import (C, pthread_kill);
 297
 298    type sigset_t_ptr is access all sigset_t;
 299
 300    function pthread_sigmask
 301      (how  : int;
 302       set  : sigset_t_ptr;
 303       oset : sigset_t_ptr) return int;
 304    pragma Import (C, pthread_sigmask);
 305
 306    ----------------------------
 307    --  POSIX.1c  Section 11  --
 308    ----------------------------
 309
 310    function pthread_mutexattr_init (attr : access pthread_mutexattr_t)
 311      return int;
 312    pragma Import (C, pthread_mutexattr_init);
 313
 314    function pthread_mutexattr_destroy
 315      (attr : access pthread_mutexattr_t) return int;
 316    pragma Import (C, pthread_mutexattr_destroy);
 317
 318    function pthread_mutex_init
 319      (mutex : access pthread_mutex_t;
 320       attr  : access pthread_mutexattr_t) return int;
 321    pragma Import (C, pthread_mutex_init, "__pthread_mutex_init");
 322
 323    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 324    pragma Import (C, pthread_mutex_destroy, "__pthread_mutex_destroy");
 325
 326    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 327    pragma Import (C, pthread_mutex_lock, "__pthread_mutex_lock");
 328
 329    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 330    pragma Import (C, pthread_mutex_unlock, "__pthread_mutex_unlock");
 331
 332    function pthread_condattr_init
 333      (attr : access pthread_condattr_t) return int;
 334    pragma Import (C, pthread_condattr_init);
 335
 336    function pthread_condattr_destroy
 337      (attr : access pthread_condattr_t) return int;
 338    pragma Import (C, pthread_condattr_destroy);
 339
 340    function pthread_cond_init
 341      (cond : access pthread_cond_t;
 342       attr : access pthread_condattr_t) return int;
 343    pragma Import (C, pthread_cond_init, "__pthread_cond_init");
 344
 345    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 346    pragma Import (C, pthread_cond_destroy, "__pthread_cond_destroy");
 347
 348    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 349    pragma Import (C, pthread_cond_signal, "__pthread_cond_signal");
 350
 351    function pthread_cond_wait
 352      (cond  : access pthread_cond_t;
 353       mutex : access pthread_mutex_t) return  int;
 354    pragma Import (C, pthread_cond_wait, "__pthread_cond_wait");
 355
 356    function pthread_cond_timedwait
 357      (cond    : access pthread_cond_t;
 358       mutex   : access pthread_mutex_t;
 359       abstime : access timespec) return int;
 360    pragma Import (C, pthread_cond_timedwait, "__pthread_cond_timedwait");
 361
 362    ----------------------------
 363    --  POSIX.1c  Section 13  --
 364    ----------------------------
 365
 366    function pthread_mutexattr_setprotocol
 367      (attr     : access pthread_mutexattr_t;
 368       protocol : int) return int;
 369    pragma Import (C, pthread_mutexattr_setprotocol);
 370
 371    function pthread_mutexattr_setprioceiling
 372      (attr     : access pthread_mutexattr_t;
 373       prioceiling : int) return int;
 374    pragma Import (C, pthread_mutexattr_setprioceiling);
 375
 376    type struct_sched_param is record
 377       sched_priority : int;  --  scheduling priority
 378    end record;
 379
 380    function pthread_setschedparam
 381      (thread : pthread_t;
 382       policy : int;
 383       param  : access struct_sched_param) return int;
 384    pragma Import (C, pthread_setschedparam);
 385
 386    function pthread_attr_setscope
 387      (attr            : access pthread_attr_t;
 388       contentionscope : int) return int;
 389    pragma Import (C, pthread_attr_setscope);
 390
 391    function pthread_attr_setinheritsched
 392      (attr            : access pthread_attr_t;
 393       inheritsched    : int) return int;
 394    pragma Import (C, pthread_attr_setinheritsched,
 395      "__pthread_attr_setinheritsched");
 396
 397    function pthread_attr_setschedpolicy
 398      (attr : access pthread_attr_t; policy : int) return int;
 399    pragma Import (C, pthread_attr_setschedpolicy);
 400
 401    function pthread_attr_setschedparam
 402      (attr        : access pthread_attr_t;
 403       sched_param : access struct_sched_param) return int;
 404    pragma Import (C, pthread_attr_setschedparam);
 405
 406    function sched_yield return int;
 407    pragma Import (C, sched_yield);
 408
 409    ---------------------------
 410    -- P1003.1c - Section 16 --
 411    ---------------------------
 412
 413    function pthread_attr_init (attributes : access pthread_attr_t)
 414      return int;
 415    pragma Import (C, pthread_attr_init);
 416
 417    function pthread_attr_destroy (attributes : access pthread_attr_t)
 418      return int;
 419    pragma Import (C, pthread_attr_destroy);
 420
 421    function pthread_attr_setdetachstate
 422      (attr        : access pthread_attr_t;
 423       detachstate : int) return int;
 424    pragma Import (C, pthread_attr_setdetachstate);
 425
 426    function pthread_attr_setstacksize
 427      (attr      : access pthread_attr_t;
 428       stacksize : size_t) return int;
 429    pragma Import (C, pthread_attr_setstacksize, "__pthread_attr_setstacksize");
 430
 431    function pthread_create
 432      (thread        : access pthread_t;
 433       attributes    : access pthread_attr_t;
 434       start_routine : Thread_Body;
 435       arg           : System.Address) return int;
 436    pragma Import (C, pthread_create, "__pthread_create");
 437
 438    procedure pthread_exit (status : System.Address);
 439    pragma Import (C, pthread_exit, "__pthread_exit");
 440
 441    function pthread_self return pthread_t;
 442    pragma Import (C, pthread_self, "__pthread_self");
 443
 444    --------------------------
 445    -- POSIX.1c  Section 17 --
 446    --------------------------
 447
 448    function pthread_setspecific
 449      (key : pthread_key_t; value : System.Address) return int;
 450    pragma Import (C, pthread_setspecific, "__pthread_setspecific");
 451
 452    function pthread_getspecific (key : pthread_key_t) return System.Address;
 453    pragma Import (C, pthread_getspecific, "__pthread_getspecific");
 454
 455    type destructor_pointer is access procedure (arg : System.Address);
 456
 457    function pthread_key_create
 458      (key        : access pthread_key_t;
 459       destructor : destructor_pointer) return int;
 460    pragma Import (C, pthread_key_create);
 461
 462 private
 463
 464    type sigset_t is new unsigned_long;
 465
 466    type pid_t is new int;
 467
 468    type time_t is new int;
 469
 470    type timespec is record
 471       tv_sec  : time_t;
 472       tv_nsec : long;
 473    end record;
 474    pragma Convention (C, timespec);
 475
 476    type clockid_t is new int;
 477    CLOCK_REALTIME : constant clockid_t := 1;
 478
 479    type struct_timeval is record
 480       tv_sec  : time_t;
 481       tv_usec : time_t;
 482    end record;
 483    pragma Convention (C, struct_timeval);
 484
 485    type unsigned_long_array is array (Natural range <>) of unsigned_long;
 486
 487    type pthread_t is new System.Address;
 488
 489    type pthread_cond_t is record
 490       state     : unsigned;
 491       valid     : unsigned;
 492       name      : System.Address;
 493       arg       : unsigned;
 494       reserved1 : unsigned;
 495       sequence  : unsigned_long;
 496       block     : System.Address;
 497    end record;
 498    pragma Convention (C, pthread_cond_t);
 499
 500    type pthread_attr_t is record
 501       valid    : long;
 502       name     : System.Address;
 503       arg      : unsigned_long;
 504       reserved : unsigned_long_array (0 .. 18);
 505    end record;
 506    pragma Convention (C, pthread_attr_t);
 507
 508    type pthread_mutex_t is record
 509       lock     : unsigned;
 510       valid    : unsigned;
 511       name     : System.Address;
 512       arg      : unsigned;
 513       depth    : unsigned;
 514       sequence : unsigned_long;
 515       owner    : unsigned_long;
 516       block    : System.Address;
 517    end record;
 518    for pthread_mutex_t'Size use 8 * 48;
 519    pragma Convention (C, pthread_mutex_t);
 520
 521    type pthread_mutexattr_t is record
 522       valid    : long;
 523       reserved : unsigned_long_array (0 .. 14);
 524    end record;
 525    pragma Convention (C, pthread_mutexattr_t);
 526
 527    type pthread_condattr_t is record
 528       valid    : long;
 529       reserved : unsigned_long_array (0 .. 12);
 530    end record;
 531    pragma Convention (C, pthread_condattr_t);
 532
 533    type pthread_key_t is new unsigned;
 534
 535 end System.OS_Interface;