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: 1.1 $
  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.       --
  32 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  33 --                                                                          --
  34 ------------------------------------------------------------------------------
  35
  36 --  This is the DEC Unix 4.0/5.1 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 --  It is designed to be a bottom-level (leaf) package.
  43
  44 with Interfaces.C;
  45 package System.OS_Interface is
  46    pragma Preelaborate;
  47
  48    pragma Linker_Options ("-lpthread");
  49    pragma Linker_Options ("-lmach");
  50    pragma Linker_Options ("-lexc");
  51    pragma Linker_Options ("-lrt");
  52
  53    subtype int            is Interfaces.C.int;
  54    subtype short          is Interfaces.C.short;
  55    subtype long           is Interfaces.C.long;
  56    subtype unsigned       is Interfaces.C.unsigned;
  57    subtype unsigned_short is Interfaces.C.unsigned_short;
  58    subtype unsigned_long  is Interfaces.C.unsigned_long;
  59    subtype unsigned_char  is Interfaces.C.unsigned_char;
  60    subtype plain_char     is Interfaces.C.plain_char;
  61    subtype size_t         is Interfaces.C.size_t;
  62    subtype char_array     is Interfaces.C.char_array;
  63
  64    -----------
  65    -- Errno --
  66    -----------
  67
  68    function errno return int;
  69    pragma Import (C, errno, "_Geterrno");
  70
  71    EAGAIN    : constant := 35;
  72    EINTR     : constant := 4;
  73    EINVAL    : constant := 22;
  74    ENOMEM    : constant := 12;
  75    ETIMEDOUT : constant := 60;
  76
  77    -------------
  78    -- Signals --
  79    -------------
  80
  81    Max_Interrupt : constant := 48;
  82    type Signal is new int range 0 .. Max_Interrupt;
  83    for Signal'Size use int'Size;
  84
  85    SIGHUP     : constant := 1; --  hangup
  86    SIGINT     : constant := 2; --  interrupt (rubout)
  87    SIGQUIT    : constant := 3; --  quit (ASCD FS)
  88    SIGILL     : constant := 4; --  illegal instruction (not reset)
  89    SIGTRAP    : constant := 5; --  trace trap (not reset)
  90    SIGABRT    : constant := 6; --  used by abort, replace SIGIOT in the  future
  91    SIGIOT     : constant := 6; --  abort (terminate) process
  92    SIGLOST    : constant := 6; --  old BSD signal ??
  93    SIGEMT     : constant := 7; --  EMT instruction
  94    SIGFPE     : constant := 8; --  floating point exception
  95    SIGKILL    : constant := 9; --  kill (cannot be caught or ignored)
  96    SIGBUS     : constant := 10; --  bus error
  97    SIGSEGV    : constant := 11; --  segmentation violation
  98    SIGSYS     : constant := 12; --  bad argument to system call
  99    SIGPIPE    : constant := 13; --  write on a pipe with no one to read it
 100    SIGALRM    : constant := 14; --  alarm clock
 101    SIGTERM    : constant := 15; --  software termination signal from kill
 102    SIGURG     : constant := 16; --  urgent condition on IO channel
 103    SIGIOINT   : constant := 16; --  printer to backend error signal
 104    SIGSTOP    : constant := 17; --  stop (cannot be caught or ignored)
 105    SIGTSTP    : constant := 18; --  user stop requested from tty
 106    SIGCONT    : constant := 19; --  stopped process has been continued
 107    SIGCHLD    : constant := 20; --  child status change
 108    SIGTTIN    : constant := 21; --  background tty read attempted
 109    SIGTTOU    : constant := 22; --  background tty write attempted
 110    SIGPOLL    : constant := 23; --  I/O possible, or completed
 111    SIGIO      : constant := 23; --  STREAMS version of SIGPOLL
 112    SIGAIO     : constant := 23; --  base lan i/o
 113    SIGPTY     : constant := 23; --  pty i/o
 114    SIGXCPU    : constant := 24; --  CPU time limit exceeded
 115    SIGXFSZ    : constant := 25; --  filesize limit exceeded
 116    SIGVTALRM  : constant := 26; --  virtual timer expired
 117    SIGPROF    : constant := 27; --  profiling timer expired
 118    SIGWINCH   : constant := 28; --  window size change
 119    SIGINFO    : constant := 29; --  information request
 120    SIGPWR     : constant := 29; --  Power Fail/Restart -- SVID3/SVR4
 121    SIGUSR1    : constant := 30; --  user defined signal 1
 122    SIGUSR2    : constant := 31; --  user defined signal 2
 123    SIGRESV    : constant := 32; --  reserved by Digital for future use
 124
 125    SIGADAABORT : constant := SIGABRT;
 126
 127    type Signal_Set is array (Natural range <>) of Signal;
 128
 129    Unmasked    : constant Signal_Set := (0 .. 0 => SIGTRAP);
 130    Reserved    : constant Signal_Set := (SIGALRM, SIGABRT, SIGKILL, SIGSTOP);
 131
 132    type sigset_t is private;
 133
 134    function sigaddset (set : access sigset_t; sig : Signal) return int;
 135    pragma Import (C, sigaddset);
 136
 137    function sigdelset (set : access sigset_t; sig : Signal) return int;
 138    pragma Import (C, sigdelset);
 139
 140    function sigfillset (set : access sigset_t) return int;
 141    pragma Import (C, sigfillset);
 142
 143    function sigismember (set : access sigset_t; sig : Signal) return int;
 144    pragma Import (C, sigismember);
 145
 146    function sigemptyset (set : access sigset_t) return int;
 147    pragma Import (C, sigemptyset);
 148
 149    type union_type_3 is new String (1 .. 116);
 150    type siginfo_t is record
 151       si_signo     : int;
 152       si_errno     : int;
 153       si_code      : int;
 154       X_data       : union_type_3;
 155    end record;
 156    for siginfo_t'Size use 8 * 128;
 157    pragma Convention (C, siginfo_t);
 158
 159    type struct_sigaction is record
 160       sa_handler : System.Address;
 161       sa_mask    : sigset_t;
 162       sa_flags   : int;
 163       sa_signo   : int;
 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    SA_NODEFER : constant := 8;
 176    SA_SIGINFO : constant := 16#40#;
 177
 178    function sigaction
 179      (sig  : Signal;
 180       act  : struct_sigaction_ptr;
 181       oact : struct_sigaction_ptr) return int;
 182    pragma Import (C, sigaction);
 183
 184    ----------
 185    -- Time --
 186    ----------
 187
 188    type timespec is private;
 189
 190    function nanosleep (rqtp, rmtp : access timespec)  return int;
 191    pragma Import (C, nanosleep);
 192
 193    type clockid_t is private;
 194
 195    CLOCK_REALTIME : constant clockid_t;
 196
 197    function clock_gettime
 198      (clock_id : clockid_t;
 199       tp       : access timespec) return int;
 200    pragma Import (C, clock_gettime);
 201
 202    function To_Duration (TS : timespec) return Duration;
 203    pragma Inline (To_Duration);
 204
 205    function To_Timespec (D : Duration) return timespec;
 206    pragma Inline (To_Timespec);
 207
 208    type struct_timezone is record
 209       tz_minuteswest : int;
 210       tz_dsttime     : int;
 211    end record;
 212    pragma Convention (C, struct_timezone);
 213    type struct_timeval is private;
 214    --  This is needed on systems that do not have clock_gettime()
 215    --  but do have gettimeofday().
 216
 217    function To_Duration (TV : struct_timeval) return Duration;
 218    pragma Inline (To_Duration);
 219
 220    function To_Timeval (D : Duration) return struct_timeval;
 221    pragma Inline (To_Timeval);
 222
 223    -------------------------
 224    -- Priority Scheduling --
 225    -------------------------
 226
 227    SCHED_FIFO  : constant := 1;
 228    SCHED_RR    : constant := 2;
 229    SCHED_OTHER : constant := 3;
 230    SCHED_LFI   : constant := 5;
 231
 232    -------------
 233    -- Process --
 234    -------------
 235
 236    type pid_t is private;
 237
 238    function kill (pid : pid_t; sig : Signal) return int;
 239    pragma Import (C, kill);
 240
 241    function getpid return pid_t;
 242    pragma Import (C, getpid);
 243
 244    BIND_NO_INHERIT  : constant := 1;
 245
 246    function bind_to_cpu
 247      (pid       : pid_t;
 248       cpu_mask  : unsigned_long;
 249       flag      : unsigned_long := BIND_NO_INHERIT) return int;
 250    pragma Import (C, bind_to_cpu);
 251
 252    -------------
 253    -- Threads --
 254    -------------
 255
 256    type Thread_Body is access
 257      function (arg : System.Address) return System.Address;
 258    type pthread_t           is private;
 259    subtype Thread_Id        is pthread_t;
 260
 261    type pthread_mutex_t     is limited private;
 262    type pthread_cond_t      is limited private;
 263    type pthread_attr_t      is limited private;
 264    type pthread_mutexattr_t is limited private;
 265    type pthread_condattr_t  is limited private;
 266    type pthread_key_t       is private;
 267
 268    PTHREAD_CREATE_DETACHED : constant := 1;
 269
 270    PTHREAD_SCOPE_PROCESS : constant := 0;
 271    PTHREAD_SCOPE_SYSTEM  : constant := 1;
 272
 273    PTHREAD_EXPLICIT_SCHED : constant := 1;
 274
 275    ---------------------------------------
 276    -- Nonstandard Thread Initialization --
 277    ---------------------------------------
 278
 279    procedure pthread_init;
 280    pragma Inline (pthread_init);
 281    --  This is a dummy procedure to share some GNULLI files
 282
 283    ---------------------------
 284    --  POSIX.1c  Section 3  --
 285    ---------------------------
 286
 287    function sigwait
 288      (set : access sigset_t;
 289       sig : access Signal) return int;
 290    pragma Import (C, sigwait, "__sigwaitd10");
 291
 292    function pthread_kill
 293      (thread : pthread_t;
 294       sig    : Signal) return int;
 295    pragma Import (C, pthread_kill);
 296
 297    type sigset_t_ptr is access all sigset_t;
 298
 299    function pthread_sigmask
 300      (how  : int;
 301       set  : sigset_t_ptr;
 302       oset : sigset_t_ptr) return int;
 303    pragma Import (C, pthread_sigmask);
 304
 305    ----------------------------
 306    --  POSIX.1c  Section 11  --
 307    ----------------------------
 308
 309    function pthread_mutexattr_init (attr : access pthread_mutexattr_t)
 310      return int;
 311    pragma Import (C, pthread_mutexattr_init);
 312
 313    function pthread_mutexattr_destroy
 314      (attr : access pthread_mutexattr_t) return int;
 315    pragma Import (C, pthread_mutexattr_destroy);
 316
 317    function pthread_mutex_init
 318      (mutex : access pthread_mutex_t;
 319       attr  : access pthread_mutexattr_t) return int;
 320    pragma Import (C, pthread_mutex_init, "__pthread_mutex_init");
 321
 322    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 323    pragma Import (C, pthread_mutex_destroy, "__pthread_mutex_destroy");
 324
 325    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 326    pragma Import (C, pthread_mutex_lock, "__pthread_mutex_lock");
 327
 328    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 329    pragma Import (C, pthread_mutex_unlock, "__pthread_mutex_unlock");
 330
 331    function pthread_condattr_init
 332      (attr : access pthread_condattr_t) return int;
 333    pragma Import (C, pthread_condattr_init);
 334
 335    function pthread_condattr_destroy
 336      (attr : access pthread_condattr_t) return int;
 337    pragma Import (C, pthread_condattr_destroy);
 338
 339    function pthread_cond_init
 340      (cond : access pthread_cond_t;
 341       attr : access pthread_condattr_t) return int;
 342    pragma Import (C, pthread_cond_init, "__pthread_cond_init");
 343
 344    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 345    pragma Import (C, pthread_cond_destroy, "__pthread_cond_destroy");
 346
 347    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 348    pragma Import (C, pthread_cond_signal, "__pthread_cond_signal");
 349
 350    function pthread_cond_wait
 351      (cond  : access pthread_cond_t;
 352       mutex : access pthread_mutex_t) return  int;
 353    pragma Import (C, pthread_cond_wait, "__pthread_cond_wait");
 354
 355    function pthread_cond_timedwait
 356      (cond    : access pthread_cond_t;
 357       mutex   : access pthread_mutex_t;
 358       abstime : access timespec) return int;
 359    pragma Import (C, pthread_cond_timedwait, "__pthread_cond_timedwait");
 360
 361    ----------------------------
 362    --  POSIX.1c  Section 13  --
 363    ----------------------------
 364
 365    function pthread_mutexattr_setprotocol
 366      (attr     : access pthread_mutexattr_t;
 367       protocol : int) return int;
 368    pragma Import (C, pthread_mutexattr_setprotocol);
 369
 370    function pthread_mutexattr_setprioceiling
 371      (attr     : access pthread_mutexattr_t;
 372       prioceiling : int) return int;
 373    pragma Import (C, pthread_mutexattr_setprioceiling);
 374
 375    type struct_sched_param is record
 376       sched_priority : int;  --  scheduling priority
 377    end record;
 378
 379    function pthread_setschedparam
 380      (thread : pthread_t;
 381       policy : int;
 382       param  : access struct_sched_param) return int;
 383    pragma Import (C, pthread_setschedparam);
 384
 385    function pthread_attr_setscope
 386      (attr            : access pthread_attr_t;
 387       contentionscope : int) return int;
 388    pragma Import (C, pthread_attr_setscope);
 389
 390    function pthread_attr_setinheritsched
 391      (attr            : access pthread_attr_t;
 392       inheritsched    : int) return int;
 393    pragma Import (C, pthread_attr_setinheritsched,
 394      "__pthread_attr_setinheritsched");
 395
 396    function pthread_attr_setschedpolicy
 397      (attr : access pthread_attr_t; policy : int) return int;
 398    pragma Import (C, pthread_attr_setschedpolicy);
 399
 400    function pthread_attr_setschedparam
 401      (attr        : access pthread_attr_t;
 402       sched_param : access struct_sched_param) return int;
 403    pragma Import (C, pthread_attr_setschedparam);
 404
 405    function sched_yield return int;
 406    pragma Import (C, sched_yield);
 407
 408    ---------------------------
 409    -- P1003.1c - Section 16 --
 410    ---------------------------
 411
 412    function pthread_attr_init (attributes : access pthread_attr_t)
 413      return int;
 414    pragma Import (C, pthread_attr_init);
 415
 416    function pthread_attr_destroy (attributes : access pthread_attr_t)
 417      return int;
 418    pragma Import (C, pthread_attr_destroy);
 419
 420    function pthread_attr_setdetachstate
 421      (attr        : access pthread_attr_t;
 422       detachstate : int) return int;
 423    pragma Import (C, pthread_attr_setdetachstate);
 424
 425    function pthread_attr_setstacksize
 426      (attr      : access pthread_attr_t;
 427       stacksize : size_t) return int;
 428    pragma Import (C, pthread_attr_setstacksize, "__pthread_attr_setstacksize");
 429
 430    function pthread_create
 431      (thread        : access pthread_t;
 432       attributes    : access pthread_attr_t;
 433       start_routine : Thread_Body;
 434       arg           : System.Address) return int;
 435    pragma Import (C, pthread_create, "__pthread_create");
 436
 437    procedure pthread_exit (status : System.Address);
 438    pragma Import (C, pthread_exit, "__pthread_exit");
 439
 440    function pthread_self return pthread_t;
 441    pragma Import (C, pthread_self, "__pthread_self");
 442
 443    --------------------------
 444    -- POSIX.1c  Section 17 --
 445    --------------------------
 446
 447    function pthread_setspecific
 448      (key : pthread_key_t; value : System.Address) return int;
 449    pragma Import (C, pthread_setspecific, "__pthread_setspecific");
 450
 451    function pthread_getspecific (key : pthread_key_t) return System.Address;
 452    pragma Import (C, pthread_getspecific, "__pthread_getspecific");
 453
 454    type destructor_pointer is access procedure (arg : System.Address);
 455
 456    function pthread_key_create
 457      (key        : access pthread_key_t;
 458       destructor : destructor_pointer) return int;
 459    pragma Import (C, pthread_key_create);
 460
 461 private
 462
 463    type sigset_t is new unsigned_long;
 464
 465    type pid_t is new int;
 466
 467    type time_t is new int;
 468
 469    type timespec is record
 470       tv_sec  : time_t;
 471       tv_nsec : long;
 472    end record;
 473    pragma Convention (C, timespec);
 474
 475    type clockid_t is new int;
 476    CLOCK_REALTIME : constant clockid_t := 1;
 477
 478    type struct_timeval is record
 479       tv_sec  : time_t;
 480       tv_usec : time_t;
 481    end record;
 482    pragma Convention (C, struct_timeval);
 483
 484    type unsigned_long_array is array (Natural range <>) of unsigned_long;
 485
 486    type pthread_t is new System.Address;
 487
 488    type pthread_cond_t is record
 489       state     : unsigned;
 490       valid     : unsigned;
 491       name      : System.Address;
 492       arg       : unsigned;
 493       reserved1 : unsigned;
 494       sequence  : unsigned_long;
 495       block     : System.Address;
 496    end record;
 497    pragma Convention (C, pthread_cond_t);
 498
 499    type pthread_attr_t is record
 500       valid    : long;
 501       name     : System.Address;
 502       arg      : unsigned_long;
 503       reserved : unsigned_long_array (0 .. 18);
 504    end record;
 505    pragma Convention (C, pthread_attr_t);
 506
 507    type pthread_mutex_t is record
 508       lock     : unsigned;
 509       valid    : unsigned;
 510       name     : System.Address;
 511       arg      : unsigned;
 512       depth    : unsigned;
 513       sequence : unsigned_long;
 514       owner    : unsigned_long;
 515       block    : System.Address;
 516    end record;
 517    for pthread_mutex_t'Size use 8 * 48;
 518    pragma Convention (C, pthread_mutex_t);
 519
 520    type pthread_mutexattr_t is record
 521       valid    : long;
 522       reserved : unsigned_long_array (0 .. 14);
 523    end record;
 524    pragma Convention (C, pthread_mutexattr_t);
 525
 526    type pthread_condattr_t is record
 527       valid    : long;
 528       reserved : unsigned_long_array (0 .. 12);
 529    end record;
 530    pragma Convention (C, pthread_condattr_t);
 531
 532    type pthread_key_t is new unsigned;
 533
 534 end System.OS_Interface;