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 --                                                                          --
  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 DEC Unix 4.0/5.1 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 --  It is designed to be a bottom-level (leaf) package.
  42
  43 with Interfaces.C;
  44 package System.OS_Interface is
  45    pragma Preelaborate;
  46
  47    pragma Linker_Options ("-lpthread");
  48    pragma Linker_Options ("-lmach");
  49    pragma Linker_Options ("-lexc");
  50    pragma Linker_Options ("-lrt");
  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    subtype char_array     is Interfaces.C.char_array;
  62
  63    -----------
  64    -- Errno --
  65    -----------
  66
  67    function errno return int;
  68    pragma Import (C, errno, "_Geterrno");
  69
  70    EAGAIN    : constant := 35;
  71    EINTR     : constant := 4;
  72    EINVAL    : constant := 22;
  73    ENOMEM    : constant := 12;
  74    ETIMEDOUT : constant := 60;
  75
  76    -------------
  77    -- Signals --
  78    -------------
  79
  80    Max_Interrupt : constant := 48;
  81    type Signal is new int range 0 .. Max_Interrupt;
  82    for Signal'Size use int'Size;
  83
  84    SIGHUP     : constant := 1; --  hangup
  85    SIGINT     : constant := 2; --  interrupt (rubout)
  86    SIGQUIT    : constant := 3; --  quit (ASCD FS)
  87    SIGILL     : constant := 4; --  illegal instruction (not reset)
  88    SIGTRAP    : constant := 5; --  trace trap (not reset)
  89    SIGABRT    : constant := 6; --  used by abort, replace SIGIOT in the  future
  90    SIGIOT     : constant := 6; --  abort (terminate) process
  91    SIGLOST    : constant := 6; --  old BSD signal ??
  92    SIGEMT     : constant := 7; --  EMT instruction
  93    SIGFPE     : constant := 8; --  floating point exception
  94    SIGKILL    : constant := 9; --  kill (cannot be caught or ignored)
  95    SIGBUS     : constant := 10; --  bus error
  96    SIGSEGV    : constant := 11; --  segmentation violation
  97    SIGSYS     : constant := 12; --  bad argument to system call
  98    SIGPIPE    : constant := 13; --  write on a pipe with no one to read it
  99    SIGALRM    : constant := 14; --  alarm clock
 100    SIGTERM    : constant := 15; --  software termination signal from kill
 101    SIGURG     : constant := 16; --  urgent condition on IO channel
 102    SIGIOINT   : constant := 16; --  printer to backend error signal
 103    SIGSTOP    : constant := 17; --  stop (cannot be caught or ignored)
 104    SIGTSTP    : constant := 18; --  user stop requested from tty
 105    SIGCONT    : constant := 19; --  stopped process has been continued
 106    SIGCHLD    : constant := 20; --  child status change
 107    SIGTTIN    : constant := 21; --  background tty read attempted
 108    SIGTTOU    : constant := 22; --  background tty write attempted
 109    SIGPOLL    : constant := 23; --  I/O possible, or completed
 110    SIGIO      : constant := 23; --  STREAMS version of SIGPOLL
 111    SIGAIO     : constant := 23; --  base lan i/o
 112    SIGPTY     : constant := 23; --  pty i/o
 113    SIGXCPU    : constant := 24; --  CPU time limit exceeded
 114    SIGXFSZ    : constant := 25; --  filesize limit exceeded
 115    SIGVTALRM  : constant := 26; --  virtual timer expired
 116    SIGPROF    : constant := 27; --  profiling timer expired
 117    SIGWINCH   : constant := 28; --  window size change
 118    SIGINFO    : constant := 29; --  information request
 119    SIGPWR     : constant := 29; --  Power Fail/Restart -- SVID3/SVR4
 120    SIGUSR1    : constant := 30; --  user defined signal 1
 121    SIGUSR2    : constant := 31; --  user defined signal 2
 122    SIGRESV    : constant := 32; --  reserved by Digital for future use
 123
 124    SIGADAABORT : constant := SIGABRT;
 125
 126    type Signal_Set is array (Natural range <>) of Signal;
 127
 128    Unmasked    : constant Signal_Set := (0 .. 0 => SIGTRAP);
 129    Reserved    : constant Signal_Set := (SIGALRM, SIGABRT, SIGKILL, SIGSTOP);
 130
 131    type sigset_t is private;
 132
 133    function sigaddset (set : access sigset_t; sig : Signal) return int;
 134    pragma Import (C, sigaddset);
 135
 136    function sigdelset (set : access sigset_t; sig : Signal) return int;
 137    pragma Import (C, sigdelset);
 138
 139    function sigfillset (set : access sigset_t) return int;
 140    pragma Import (C, sigfillset);
 141
 142    function sigismember (set : access sigset_t; sig : Signal) return int;
 143    pragma Import (C, sigismember);
 144
 145    function sigemptyset (set : access sigset_t) return int;
 146    pragma Import (C, sigemptyset);
 147
 148    type union_type_3 is new String (1 .. 116);
 149    type siginfo_t is record
 150       si_signo     : int;
 151       si_errno     : int;
 152       si_code      : int;
 153       X_data       : union_type_3;
 154    end record;
 155    for siginfo_t'Size use 8 * 128;
 156    pragma Convention (C, siginfo_t);
 157
 158    type struct_sigaction is record
 159       sa_handler : System.Address;
 160       sa_mask    : sigset_t;
 161       sa_flags   : int;
 162       sa_signo   : int;
 163    end record;
 164    pragma Convention (C, struct_sigaction);
 165    type struct_sigaction_ptr is access all struct_sigaction;
 166
 167    SIG_BLOCK   : constant := 1;
 168    SIG_UNBLOCK : constant := 2;
 169    SIG_SETMASK : constant := 3;
 170
 171    SIG_DFL : constant := 0;
 172    SIG_IGN : constant := 1;
 173
 174    SA_NODEFER : constant := 8;
 175    SA_SIGINFO : constant := 16#40#;
 176
 177    function sigaction
 178      (sig  : Signal;
 179       act  : struct_sigaction_ptr;
 180       oact : struct_sigaction_ptr) return int;
 181    pragma Import (C, sigaction);
 182
 183    ----------
 184    -- Time --
 185    ----------
 186
 187    type timespec is private;
 188
 189    function nanosleep (rqtp, rmtp : access timespec)  return int;
 190    pragma Import (C, nanosleep);
 191
 192    type clockid_t is private;
 193
 194    CLOCK_REALTIME : constant clockid_t;
 195
 196    function clock_gettime
 197      (clock_id : clockid_t;
 198       tp       : access timespec) return int;
 199    pragma Import (C, clock_gettime);
 200
 201    function To_Duration (TS : timespec) return Duration;
 202    pragma Inline (To_Duration);
 203
 204    function To_Timespec (D : Duration) return timespec;
 205    pragma Inline (To_Timespec);
 206
 207    type struct_timezone is record
 208       tz_minuteswest : int;
 209       tz_dsttime     : int;
 210    end record;
 211    pragma Convention (C, struct_timezone);
 212    type struct_timeval is private;
 213    --  This is needed on systems that do not have clock_gettime()
 214    --  but do have gettimeofday().
 215
 216    function To_Duration (TV : struct_timeval) return Duration;
 217    pragma Inline (To_Duration);
 218
 219    function To_Timeval (D : Duration) return struct_timeval;
 220    pragma Inline (To_Timeval);
 221
 222    -------------------------
 223    -- Priority Scheduling --
 224    -------------------------
 225
 226    SCHED_FIFO  : constant := 1;
 227    SCHED_RR    : constant := 2;
 228    SCHED_OTHER : constant := 3;
 229    SCHED_LFI   : constant := 5;
 230
 231    -------------
 232    -- Process --
 233    -------------
 234
 235    type pid_t is private;
 236
 237    function kill (pid : pid_t; sig : Signal) return int;
 238    pragma Import (C, kill);
 239
 240    function getpid return pid_t;
 241    pragma Import (C, getpid);
 242
 243    BIND_NO_INHERIT  : constant := 1;
 244
 245    function bind_to_cpu
 246      (pid       : pid_t;
 247       cpu_mask  : unsigned_long;
 248       flag      : unsigned_long := BIND_NO_INHERIT) return int;
 249    pragma Import (C, bind_to_cpu);
 250
 251    -------------
 252    -- Threads --
 253    -------------
 254
 255    type Thread_Body is access
 256      function (arg : System.Address) return System.Address;
 257    type pthread_t           is private;
 258    subtype Thread_Id        is pthread_t;
 259
 260    type pthread_mutex_t     is limited private;
 261    type pthread_cond_t      is limited private;
 262    type pthread_attr_t      is limited private;
 263    type pthread_mutexattr_t is limited private;
 264    type pthread_condattr_t  is limited private;
 265    type pthread_key_t       is private;
 266
 267    PTHREAD_CREATE_DETACHED : constant := 1;
 268
 269    PTHREAD_SCOPE_PROCESS : constant := 0;
 270    PTHREAD_SCOPE_SYSTEM  : constant := 1;
 271
 272    PTHREAD_EXPLICIT_SCHED : constant := 1;
 273
 274    ---------------------------------------
 275    -- Nonstandard Thread Initialization --
 276    ---------------------------------------
 277
 278    procedure pthread_init;
 279    pragma Inline (pthread_init);
 280    --  This is a dummy procedure to share some GNULLI files
 281
 282    ---------------------------
 283    --  POSIX.1c  Section 3  --
 284    ---------------------------
 285
 286    function sigwait
 287      (set : access sigset_t;
 288       sig : access Signal) return int;
 289    pragma Import (C, sigwait, "__sigwaitd10");
 290
 291    function pthread_kill
 292      (thread : pthread_t;
 293       sig    : Signal) return int;
 294    pragma Import (C, pthread_kill);
 295
 296    type sigset_t_ptr is access all sigset_t;
 297
 298    function pthread_sigmask
 299      (how  : int;
 300       set  : sigset_t_ptr;
 301       oset : sigset_t_ptr) return int;
 302    pragma Import (C, pthread_sigmask);
 303
 304    ----------------------------
 305    --  POSIX.1c  Section 11  --
 306    ----------------------------
 307
 308    function pthread_mutexattr_init (attr : access pthread_mutexattr_t)
 309      return int;
 310    pragma Import (C, pthread_mutexattr_init);
 311
 312    function pthread_mutexattr_destroy
 313      (attr : access pthread_mutexattr_t) return int;
 314    pragma Import (C, pthread_mutexattr_destroy);
 315
 316    function pthread_mutex_init
 317      (mutex : access pthread_mutex_t;
 318       attr  : access pthread_mutexattr_t) return int;
 319    pragma Import (C, pthread_mutex_init, "__pthread_mutex_init");
 320
 321    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 322    pragma Import (C, pthread_mutex_destroy, "__pthread_mutex_destroy");
 323
 324    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 325    pragma Import (C, pthread_mutex_lock, "__pthread_mutex_lock");
 326
 327    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 328    pragma Import (C, pthread_mutex_unlock, "__pthread_mutex_unlock");
 329
 330    function pthread_condattr_init
 331      (attr : access pthread_condattr_t) return int;
 332    pragma Import (C, pthread_condattr_init);
 333
 334    function pthread_condattr_destroy
 335      (attr : access pthread_condattr_t) return int;
 336    pragma Import (C, pthread_condattr_destroy);
 337
 338    function pthread_cond_init
 339      (cond : access pthread_cond_t;
 340       attr : access pthread_condattr_t) return int;
 341    pragma Import (C, pthread_cond_init, "__pthread_cond_init");
 342
 343    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 344    pragma Import (C, pthread_cond_destroy, "__pthread_cond_destroy");
 345
 346    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 347    pragma Import (C, pthread_cond_signal, "__pthread_cond_signal");
 348
 349    function pthread_cond_wait
 350      (cond  : access pthread_cond_t;
 351       mutex : access pthread_mutex_t) return  int;
 352    pragma Import (C, pthread_cond_wait, "__pthread_cond_wait");
 353
 354    function pthread_cond_timedwait
 355      (cond    : access pthread_cond_t;
 356       mutex   : access pthread_mutex_t;
 357       abstime : access timespec) return int;
 358    pragma Import (C, pthread_cond_timedwait, "__pthread_cond_timedwait");
 359
 360    ----------------------------
 361    --  POSIX.1c  Section 13  --
 362    ----------------------------
 363
 364    function pthread_mutexattr_setprotocol
 365      (attr     : access pthread_mutexattr_t;
 366       protocol : int) return int;
 367    pragma Import (C, pthread_mutexattr_setprotocol);
 368
 369    function pthread_mutexattr_setprioceiling
 370      (attr     : access pthread_mutexattr_t;
 371       prioceiling : int) return int;
 372    pragma Import (C, pthread_mutexattr_setprioceiling);
 373
 374    type struct_sched_param is record
 375       sched_priority : int;  --  scheduling priority
 376    end record;
 377
 378    function pthread_setschedparam
 379      (thread : pthread_t;
 380       policy : int;
 381       param  : access struct_sched_param) return int;
 382    pragma Import (C, pthread_setschedparam);
 383
 384    function pthread_attr_setscope
 385      (attr            : access pthread_attr_t;
 386       contentionscope : int) return int;
 387    pragma Import (C, pthread_attr_setscope);
 388
 389    function pthread_attr_setinheritsched
 390      (attr            : access pthread_attr_t;
 391       inheritsched    : int) return int;
 392    pragma Import (C, pthread_attr_setinheritsched,
 393      "__pthread_attr_setinheritsched");
 394
 395    function pthread_attr_setschedpolicy
 396      (attr : access pthread_attr_t; policy : int) return int;
 397    pragma Import (C, pthread_attr_setschedpolicy);
 398
 399    function pthread_attr_setschedparam
 400      (attr        : access pthread_attr_t;
 401       sched_param : access struct_sched_param) return int;
 402    pragma Import (C, pthread_attr_setschedparam);
 403
 404    function sched_yield return int;
 405    pragma Import (C, sched_yield);
 406
 407    ---------------------------
 408    -- P1003.1c - Section 16 --
 409    ---------------------------
 410
 411    function pthread_attr_init (attributes : access pthread_attr_t)
 412      return int;
 413    pragma Import (C, pthread_attr_init);
 414
 415    function pthread_attr_destroy (attributes : access pthread_attr_t)
 416      return int;
 417    pragma Import (C, pthread_attr_destroy);
 418
 419    function pthread_attr_setdetachstate
 420      (attr        : access pthread_attr_t;
 421       detachstate : int) return int;
 422    pragma Import (C, pthread_attr_setdetachstate);
 423
 424    function pthread_attr_setstacksize
 425      (attr      : access pthread_attr_t;
 426       stacksize : size_t) return int;
 427    pragma Import (C, pthread_attr_setstacksize, "__pthread_attr_setstacksize");
 428
 429    function pthread_create
 430      (thread        : access pthread_t;
 431       attributes    : access pthread_attr_t;
 432       start_routine : Thread_Body;
 433       arg           : System.Address) return int;
 434    pragma Import (C, pthread_create, "__pthread_create");
 435
 436    procedure pthread_exit (status : System.Address);
 437    pragma Import (C, pthread_exit, "__pthread_exit");
 438
 439    function pthread_self return pthread_t;
 440    pragma Import (C, pthread_self, "__pthread_self");
 441
 442    --------------------------
 443    -- POSIX.1c  Section 17 --
 444    --------------------------
 445
 446    function pthread_setspecific
 447      (key : pthread_key_t; value : System.Address) return int;
 448    pragma Import (C, pthread_setspecific, "__pthread_setspecific");
 449
 450    function pthread_getspecific (key : pthread_key_t) return System.Address;
 451    pragma Import (C, pthread_getspecific, "__pthread_getspecific");
 452
 453    type destructor_pointer is access procedure (arg : System.Address);
 454
 455    function pthread_key_create
 456      (key        : access pthread_key_t;
 457       destructor : destructor_pointer) return int;
 458    pragma Import (C, pthread_key_create);
 459
 460 private
 461
 462    type sigset_t is new unsigned_long;
 463
 464    type pid_t is new int;
 465
 466    type time_t is new int;
 467
 468    type timespec is record
 469       tv_sec  : time_t;
 470       tv_nsec : long;
 471    end record;
 472    pragma Convention (C, timespec);
 473
 474    type clockid_t is new int;
 475    CLOCK_REALTIME : constant clockid_t := 1;
 476
 477    type struct_timeval is record
 478       tv_sec  : time_t;
 479       tv_usec : time_t;
 480    end record;
 481    pragma Convention (C, struct_timeval);
 482
 483    type unsigned_long_array is array (Natural range <>) of unsigned_long;
 484
 485    type pthread_t is new System.Address;
 486
 487    type pthread_cond_t is record
 488       state     : unsigned;
 489       valid     : unsigned;
 490       name      : System.Address;
 491       arg       : unsigned;
 492       reserved1 : unsigned;
 493       sequence  : unsigned_long;
 494       block     : System.Address;
 495    end record;
 496    pragma Convention (C, pthread_cond_t);
 497
 498    type pthread_attr_t is record
 499       valid    : long;
 500       name     : System.Address;
 501       arg      : unsigned_long;
 502       reserved : unsigned_long_array (0 .. 18);
 503    end record;
 504    pragma Convention (C, pthread_attr_t);
 505
 506    type pthread_mutex_t is record
 507       lock     : unsigned;
 508       valid    : unsigned;
 509       name     : System.Address;
 510       arg      : unsigned;
 511       depth    : unsigned;
 512       sequence : unsigned_long;
 513       owner    : unsigned_long;
 514       block    : System.Address;
 515    end record;
 516    for pthread_mutex_t'Size use 8 * 48;
 517    pragma Convention (C, pthread_mutex_t);
 518
 519    type pthread_mutexattr_t is record
 520       valid    : long;
 521       reserved : unsigned_long_array (0 .. 14);
 522    end record;
 523    pragma Convention (C, pthread_mutexattr_t);
 524
 525    type pthread_condattr_t is record
 526       valid    : long;
 527       reserved : unsigned_long_array (0 .. 12);
 528    end record;
 529    pragma Convention (C, pthread_condattr_t);
 530
 531    type pthread_key_t is new unsigned;
 532
 533 end System.OS_Interface;