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 --           Copyright (C) 1998-2002 Free Software Foundation, Inc.         --
  10 --                                                                          --
  11 -- GNARL is free software; you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  14 -- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNARL; see file COPYING.  If not, write --
  19 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  20 -- MA 02111-1307, USA.                                                      --
  21 --                                                                          --
  22 -- As a special exception,  if other files  instantiate  generics from this --
  23 -- unit, or you link  this unit with other files  to produce an executable, --
  24 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  25 -- covered  by the  GNU  General  Public  License.  This exception does not --
  26 -- however invalidate  any other reasons why  the executable file  might be --
  27 -- covered by the  GNU Public License.                                      --
  28 --                                                                          --
  29 -- GNARL was developed by the GNARL team at Florida State University.       --
  30 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  31 --                                                                          --
  32 ------------------------------------------------------------------------------
  33
  34 --  This is the DEC Unix 4.0/5.1 version of this package.
  35
  36 --  This package encapsulates all direct interfaces to OS services
  37 --  that are needed by children of System.
  38
  39 --  PLEASE DO NOT add any with-clauses to this package
  40 --  It is designed to be a bottom-level (leaf) package.
  41
  42 with Interfaces.C;
  43 package System.OS_Interface is
  44    pragma Preelaborate;
  45
  46    pragma Linker_Options ("-lpthread");
  47    pragma Linker_Options ("-lmach");
  48    pragma Linker_Options ("-lexc");
  49    pragma Linker_Options ("-lrt");
  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    subtype char_array     is Interfaces.C.char_array;
  61
  62    -----------
  63    -- Errno --
  64    -----------
  65
  66    function errno return int;
  67    pragma Import (C, errno, "_Geterrno");
  68
  69    EAGAIN    : constant := 35;
  70    EINTR     : constant := 4;
  71    EINVAL    : constant := 22;
  72    ENOMEM    : constant := 12;
  73    ETIMEDOUT : constant := 60;
  74
  75    -------------
  76    -- Signals --
  77    -------------
  78
  79    Max_Interrupt : constant := 48;
  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    SIGABRT    : constant := 6; --  used by abort, replace SIGIOT in the  future
  89    SIGIOT     : constant := 6; --  abort (terminate) process
  90    SIGLOST    : constant := 6; --  old BSD signal ??
  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    SIGURG     : constant := 16; --  urgent condition on IO channel
 101    SIGIOINT   : constant := 16; --  printer to backend error signal
 102    SIGSTOP    : constant := 17; --  stop (cannot be caught or ignored)
 103    SIGTSTP    : constant := 18; --  user stop requested from tty
 104    SIGCONT    : constant := 19; --  stopped process has been continued
 105    SIGCHLD    : constant := 20; --  child status change
 106    SIGTTIN    : constant := 21; --  background tty read attempted
 107    SIGTTOU    : constant := 22; --  background tty write attempted
 108    SIGPOLL    : constant := 23; --  I/O possible, or completed
 109    SIGIO      : constant := 23; --  STREAMS version of SIGPOLL
 110    SIGAIO     : constant := 23; --  base lan i/o
 111    SIGPTY     : constant := 23; --  pty i/o
 112    SIGXCPU    : constant := 24; --  CPU time limit exceeded
 113    SIGXFSZ    : constant := 25; --  filesize limit exceeded
 114    SIGVTALRM  : constant := 26; --  virtual timer expired
 115    SIGPROF    : constant := 27; --  profiling timer expired
 116    SIGWINCH   : constant := 28; --  window size change
 117    SIGINFO    : constant := 29; --  information request
 118    SIGPWR     : constant := 29; --  Power Fail/Restart -- SVID3/SVR4
 119    SIGUSR1    : constant := 30; --  user defined signal 1
 120    SIGUSR2    : constant := 31; --  user defined signal 2
 121    SIGRESV    : constant := 32; --  reserved by Digital for future use
 122
 123    SIGADAABORT : constant := SIGABRT;
 124
 125    type Signal_Set is array (Natural range <>) of Signal;
 126
 127    Unmasked    : constant Signal_Set := (0 .. 0 => SIGTRAP);
 128    Reserved    : constant Signal_Set := (SIGALRM, SIGABRT, SIGKILL, SIGSTOP);
 129
 130    type sigset_t is private;
 131
 132    function sigaddset (set : access sigset_t; sig : Signal) return int;
 133    pragma Import (C, sigaddset);
 134
 135    function sigdelset (set : access sigset_t; sig : Signal) return int;
 136    pragma Import (C, sigdelset);
 137
 138    function sigfillset (set : access sigset_t) return int;
 139    pragma Import (C, sigfillset);
 140
 141    function sigismember (set : access sigset_t; sig : Signal) return int;
 142    pragma Import (C, sigismember);
 143
 144    function sigemptyset (set : access sigset_t) return int;
 145    pragma Import (C, sigemptyset);
 146
 147    type union_type_3 is new String (1 .. 116);
 148    type siginfo_t is record
 149       si_signo     : int;
 150       si_errno     : int;
 151       si_code      : int;
 152       X_data       : union_type_3;
 153    end record;
 154    for siginfo_t'Size use 8 * 128;
 155    pragma Convention (C, siginfo_t);
 156
 157    type struct_sigaction is record
 158       sa_handler : System.Address;
 159       sa_mask    : sigset_t;
 160       sa_flags   : int;
 161       sa_signo   : int;
 162    end record;
 163    pragma Convention (C, struct_sigaction);
 164    type struct_sigaction_ptr is access all struct_sigaction;
 165
 166    SIG_BLOCK   : constant := 1;
 167    SIG_UNBLOCK : constant := 2;
 168    SIG_SETMASK : constant := 3;
 169
 170    SIG_DFL : constant := 0;
 171    SIG_IGN : constant := 1;
 172
 173    SA_NODEFER : constant := 8;
 174    SA_SIGINFO : constant := 16#40#;
 175
 176    function sigaction
 177      (sig  : Signal;
 178       act  : struct_sigaction_ptr;
 179       oact : struct_sigaction_ptr) return int;
 180    pragma Import (C, sigaction);
 181
 182    ----------
 183    -- Time --
 184    ----------
 185
 186    type timespec is private;
 187
 188    function nanosleep (rqtp, rmtp : access timespec)  return int;
 189    pragma Import (C, nanosleep);
 190
 191    type clockid_t is private;
 192
 193    CLOCK_REALTIME : constant clockid_t;
 194
 195    function clock_gettime
 196      (clock_id : clockid_t;
 197       tp       : access timespec) return int;
 198    pragma Import (C, clock_gettime);
 199
 200    function To_Duration (TS : timespec) return Duration;
 201    pragma Inline (To_Duration);
 202
 203    function To_Timespec (D : Duration) return timespec;
 204    pragma Inline (To_Timespec);
 205
 206    type struct_timezone is record
 207       tz_minuteswest : int;
 208       tz_dsttime     : int;
 209    end record;
 210    pragma Convention (C, struct_timezone);
 211    type struct_timeval is private;
 212    --  This is needed on systems that do not have clock_gettime()
 213    --  but do have gettimeofday().
 214
 215    function To_Duration (TV : struct_timeval) return Duration;
 216    pragma Inline (To_Duration);
 217
 218    function To_Timeval (D : Duration) return struct_timeval;
 219    pragma Inline (To_Timeval);
 220
 221    -------------------------
 222    -- Priority Scheduling --
 223    -------------------------
 224
 225    SCHED_FIFO  : constant := 1;
 226    SCHED_RR    : constant := 2;
 227    SCHED_OTHER : constant := 3;
 228    SCHED_LFI   : constant := 5;
 229
 230    -------------
 231    -- Process --
 232    -------------
 233
 234    type pid_t is private;
 235
 236    function kill (pid : pid_t; sig : Signal) return int;
 237    pragma Import (C, kill);
 238
 239    function getpid return pid_t;
 240    pragma Import (C, getpid);
 241
 242    BIND_NO_INHERIT  : constant := 1;
 243
 244    function bind_to_cpu
 245      (pid       : pid_t;
 246       cpu_mask  : unsigned_long;
 247       flag      : unsigned_long := BIND_NO_INHERIT) return int;
 248    pragma Import (C, bind_to_cpu);
 249
 250    -------------
 251    -- Threads --
 252    -------------
 253
 254    type Thread_Body is access
 255      function (arg : System.Address) return System.Address;
 256    type pthread_t           is private;
 257    subtype Thread_Id        is pthread_t;
 258
 259    type pthread_mutex_t     is limited private;
 260    type pthread_cond_t      is limited private;
 261    type pthread_attr_t      is limited private;
 262    type pthread_mutexattr_t is limited private;
 263    type pthread_condattr_t  is limited private;
 264    type pthread_key_t       is private;
 265
 266    PTHREAD_CREATE_DETACHED : constant := 1;
 267
 268    PTHREAD_SCOPE_PROCESS : constant := 0;
 269    PTHREAD_SCOPE_SYSTEM  : constant := 1;
 270
 271    PTHREAD_EXPLICIT_SCHED : constant := 1;
 272
 273    ---------------------------------------
 274    -- Nonstandard Thread Initialization --
 275    ---------------------------------------
 276
 277    procedure pthread_init;
 278    pragma Inline (pthread_init);
 279    --  This is a dummy procedure to share some GNULLI files
 280
 281    ---------------------------
 282    --  POSIX.1c  Section 3  --
 283    ---------------------------
 284
 285    function sigwait
 286      (set : access sigset_t;
 287       sig : access Signal) return int;
 288    pragma Import (C, sigwait, "__sigwaitd10");
 289
 290    function pthread_kill
 291      (thread : pthread_t;
 292       sig    : Signal) return int;
 293    pragma Import (C, pthread_kill);
 294
 295    type sigset_t_ptr is access all sigset_t;
 296
 297    function pthread_sigmask
 298      (how  : int;
 299       set  : sigset_t_ptr;
 300       oset : sigset_t_ptr) return int;
 301    pragma Import (C, pthread_sigmask);
 302
 303    ----------------------------
 304    --  POSIX.1c  Section 11  --
 305    ----------------------------
 306
 307    function pthread_mutexattr_init (attr : access pthread_mutexattr_t)
 308      return int;
 309    pragma Import (C, pthread_mutexattr_init);
 310
 311    function pthread_mutexattr_destroy
 312      (attr : access pthread_mutexattr_t) return int;
 313    pragma Import (C, pthread_mutexattr_destroy);
 314
 315    function pthread_mutex_init
 316      (mutex : access pthread_mutex_t;
 317       attr  : access pthread_mutexattr_t) return int;
 318    pragma Import (C, pthread_mutex_init, "__pthread_mutex_init");
 319
 320    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 321    pragma Import (C, pthread_mutex_destroy, "__pthread_mutex_destroy");
 322
 323    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 324    pragma Import (C, pthread_mutex_lock, "__pthread_mutex_lock");
 325
 326    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 327    pragma Import (C, pthread_mutex_unlock, "__pthread_mutex_unlock");
 328
 329    function pthread_condattr_init
 330      (attr : access pthread_condattr_t) return int;
 331    pragma Import (C, pthread_condattr_init);
 332
 333    function pthread_condattr_destroy
 334      (attr : access pthread_condattr_t) return int;
 335    pragma Import (C, pthread_condattr_destroy);
 336
 337    function pthread_cond_init
 338      (cond : access pthread_cond_t;
 339       attr : access pthread_condattr_t) return int;
 340    pragma Import (C, pthread_cond_init, "__pthread_cond_init");
 341
 342    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 343    pragma Import (C, pthread_cond_destroy, "__pthread_cond_destroy");
 344
 345    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 346    pragma Import (C, pthread_cond_signal, "__pthread_cond_signal");
 347
 348    function pthread_cond_wait
 349      (cond  : access pthread_cond_t;
 350       mutex : access pthread_mutex_t) return  int;
 351    pragma Import (C, pthread_cond_wait, "__pthread_cond_wait");
 352
 353    function pthread_cond_timedwait
 354      (cond    : access pthread_cond_t;
 355       mutex   : access pthread_mutex_t;
 356       abstime : access timespec) return int;
 357    pragma Import (C, pthread_cond_timedwait, "__pthread_cond_timedwait");
 358
 359    ----------------------------
 360    --  POSIX.1c  Section 13  --
 361    ----------------------------
 362
 363    function pthread_mutexattr_setprotocol
 364      (attr     : access pthread_mutexattr_t;
 365       protocol : int) return int;
 366    pragma Import (C, pthread_mutexattr_setprotocol);
 367
 368    function pthread_mutexattr_setprioceiling
 369      (attr     : access pthread_mutexattr_t;
 370       prioceiling : int) return int;
 371    pragma Import (C, pthread_mutexattr_setprioceiling);
 372
 373    type struct_sched_param is record
 374       sched_priority : int;  --  scheduling priority
 375    end record;
 376
 377    function pthread_setschedparam
 378      (thread : pthread_t;
 379       policy : int;
 380       param  : access struct_sched_param) return int;
 381    pragma Import (C, pthread_setschedparam);
 382
 383    function pthread_attr_setscope
 384      (attr            : access pthread_attr_t;
 385       contentionscope : int) return int;
 386    pragma Import (C, pthread_attr_setscope);
 387
 388    function pthread_attr_setinheritsched
 389      (attr            : access pthread_attr_t;
 390       inheritsched    : int) return int;
 391    pragma Import (C, pthread_attr_setinheritsched,
 392      "__pthread_attr_setinheritsched");
 393
 394    function pthread_attr_setschedpolicy
 395      (attr : access pthread_attr_t; policy : int) return int;
 396    pragma Import (C, pthread_attr_setschedpolicy);
 397
 398    function pthread_attr_setschedparam
 399      (attr        : access pthread_attr_t;
 400       sched_param : access struct_sched_param) return int;
 401    pragma Import (C, pthread_attr_setschedparam);
 402
 403    function sched_yield return int;
 404    pragma Import (C, sched_yield);
 405
 406    ---------------------------
 407    -- P1003.1c - Section 16 --
 408    ---------------------------
 409
 410    function pthread_attr_init (attributes : access pthread_attr_t)
 411      return int;
 412    pragma Import (C, pthread_attr_init);
 413
 414    function pthread_attr_destroy (attributes : access pthread_attr_t)
 415      return int;
 416    pragma Import (C, pthread_attr_destroy);
 417
 418    function pthread_attr_setdetachstate
 419      (attr        : access pthread_attr_t;
 420       detachstate : int) return int;
 421    pragma Import (C, pthread_attr_setdetachstate);
 422
 423    function pthread_attr_setstacksize
 424      (attr      : access pthread_attr_t;
 425       stacksize : size_t) return int;
 426    pragma Import (C, pthread_attr_setstacksize, "__pthread_attr_setstacksize");
 427
 428    function pthread_create
 429      (thread        : access pthread_t;
 430       attributes    : access pthread_attr_t;
 431       start_routine : Thread_Body;
 432       arg           : System.Address) return int;
 433    pragma Import (C, pthread_create, "__pthread_create");
 434
 435    procedure pthread_exit (status : System.Address);
 436    pragma Import (C, pthread_exit, "__pthread_exit");
 437
 438    function pthread_self return pthread_t;
 439    pragma Inline (pthread_self);
 440
 441    --------------------------
 442    -- POSIX.1c  Section 17 --
 443    --------------------------
 444
 445    function pthread_setspecific
 446      (key : pthread_key_t; value : System.Address) return int;
 447    pragma Import (C, pthread_setspecific, "__pthread_setspecific");
 448
 449    function pthread_getspecific (key : pthread_key_t) return System.Address;
 450    pragma Import (C, pthread_getspecific, "__pthread_getspecific");
 451
 452    type destructor_pointer is access procedure (arg : System.Address);
 453
 454    function pthread_key_create
 455      (key        : access pthread_key_t;
 456       destructor : destructor_pointer) return int;
 457    pragma Import (C, pthread_key_create);
 458
 459 private
 460
 461    type sigset_t is new unsigned_long;
 462
 463    type pid_t is new int;
 464
 465    type time_t is new int;
 466
 467    type timespec is record
 468       tv_sec  : time_t;
 469       tv_nsec : long;
 470    end record;
 471    pragma Convention (C, timespec);
 472
 473    type clockid_t is new int;
 474    CLOCK_REALTIME : constant clockid_t := 1;
 475
 476    type struct_timeval is record
 477       tv_sec  : time_t;
 478       tv_usec : time_t;
 479    end record;
 480    pragma Convention (C, struct_timeval);
 481
 482    type unsigned_long_array is array (Natural range <>) of unsigned_long;
 483
 484    type pthread_t is new System.Address;
 485
 486    type pthread_cond_t is record
 487       state     : unsigned;
 488       valid     : unsigned;
 489       name      : System.Address;
 490       arg       : unsigned;
 491       reserved1 : unsigned;
 492       sequence  : unsigned_long;
 493       block     : System.Address;
 494    end record;
 495    pragma Convention (C, pthread_cond_t);
 496
 497    type pthread_attr_t is record
 498       valid    : long;
 499       name     : System.Address;
 500       arg      : unsigned_long;
 501       reserved : unsigned_long_array (0 .. 18);
 502    end record;
 503    pragma Convention (C, pthread_attr_t);
 504
 505    type pthread_mutex_t is record
 506       lock     : unsigned;
 507       valid    : unsigned;
 508       name     : System.Address;
 509       arg      : unsigned;
 510       depth    : unsigned;
 511       sequence : unsigned_long;
 512       owner    : unsigned_long;
 513       block    : System.Address;
 514    end record;
 515    for pthread_mutex_t'Size use 8 * 48;
 516    pragma Convention (C, pthread_mutex_t);
 517
 518    type pthread_mutexattr_t is record
 519       valid    : long;
 520       reserved : unsigned_long_array (0 .. 14);
 521    end record;
 522    pragma Convention (C, pthread_mutexattr_t);
 523
 524    type pthread_condattr_t is record
 525       valid    : long;
 526       reserved : unsigned_long_array (0 .. 12);
 527    end record;
 528    pragma Convention (C, pthread_condattr_t);
 529
 530    type pthread_key_t is new unsigned;
 531
 532 end System.OS_Interface;