gcc/ada/s-osinte-tru64.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) 1991-1994, Florida State University            --
  10 --             Copyright (C) 1995-2005, 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 or remove the pragma
  41 --  Preelaborate. This package is designed to be a bottom-level (leaf) package.
  42
  43 with Interfaces.C;
  44 with Unchecked_Conversion;
  45
  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
 260    function Thread_Body_Access is new
 261      Unchecked_Conversion (System.Address, Thread_Body);
 262
 263    type pthread_t           is private;
 264    subtype Thread_Id        is pthread_t;
 265
 266    type pthread_mutex_t     is limited private;
 267    type pthread_cond_t      is limited private;
 268    type pthread_attr_t      is limited private;
 269    type pthread_mutexattr_t is limited private;
 270    type pthread_condattr_t  is limited private;
 271    type pthread_key_t       is private;
 272
 273    PTHREAD_CREATE_DETACHED : constant := 1;
 274
 275    PTHREAD_SCOPE_PROCESS : constant := 0;
 276    PTHREAD_SCOPE_SYSTEM  : constant := 1;
 277
 278    PTHREAD_EXPLICIT_SCHED : constant := 1;
 279
 280    -----------
 281    -- Stack --
 282    -----------
 283
 284    Stack_Base_Available : constant Boolean := False;
 285    --  Indicates wether the stack base is available on this target.
 286
 287    function Get_Stack_Base (thread : pthread_t) return Address;
 288    pragma Inline (Get_Stack_Base);
 289    --  returns the stack base of the specified thread.
 290    --  Only call this function when Stack_Base_Available is True.
 291
 292    function Get_Page_Size return size_t;
 293    function Get_Page_Size return Address;
 294    pragma Import (C, Get_Page_Size, "getpagesize");
 295    --  returns the size of a page, or 0 if this is not relevant on this
 296    --  target
 297
 298    PROT_NONE  : constant := 0;
 299    PROT_READ  : constant := 1;
 300    PROT_WRITE : constant := 2;
 301    PROT_EXEC  : constant := 4;
 302    PROT_ALL   : constant := PROT_READ + PROT_WRITE + PROT_EXEC;
 303
 304    PROT_ON    : constant := PROT_READ;
 305    PROT_OFF   : constant := PROT_ALL;
 306
 307    function mprotect (addr : Address; len : size_t; prot : int) return int;
 308    pragma Import (C, mprotect);
 309
 310    procedure Hide_Yellow_Zone;
 311    --  Every thread except the initial one features an overflow warning area
 312    --  just above the overflow guard area on the stack. They are called
 313    --  the Yellow Zone and the Red Zone respectively. This procedure hides
 314    --  the former so that the latter could be exposed to stack probing.
 315
 316    ---------------------------------------
 317    -- Nonstandard Thread Initialization --
 318    ---------------------------------------
 319
 320    procedure pthread_init;
 321    pragma Inline (pthread_init);
 322    --  This is a dummy procedure to share some GNULLI files
 323
 324    -------------------------
 325    -- POSIX.1c  Section 3 --
 326    -------------------------
 327
 328    function sigwait
 329      (set : access sigset_t;
 330       sig : access Signal) return int;
 331    pragma Import (C, sigwait, "__sigwaitd10");
 332
 333    function pthread_kill
 334      (thread : pthread_t;
 335       sig    : Signal) return int;
 336    pragma Import (C, pthread_kill);
 337
 338    type sigset_t_ptr is access all sigset_t;
 339
 340    function pthread_sigmask
 341      (how  : int;
 342       set  : sigset_t_ptr;
 343       oset : sigset_t_ptr) return int;
 344    pragma Import (C, pthread_sigmask);
 345
 346    --------------------------
 347    -- POSIX.1c  Section 11 --
 348    --------------------------
 349
 350    function pthread_mutexattr_init (attr : access pthread_mutexattr_t)
 351      return int;
 352    pragma Import (C, pthread_mutexattr_init);
 353
 354    function pthread_mutexattr_destroy
 355      (attr : access pthread_mutexattr_t) return int;
 356    pragma Import (C, pthread_mutexattr_destroy);
 357
 358    function pthread_mutex_init
 359      (mutex : access pthread_mutex_t;
 360       attr  : access pthread_mutexattr_t) return int;
 361    pragma Import (C, pthread_mutex_init, "__pthread_mutex_init");
 362
 363    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 364    pragma Import (C, pthread_mutex_destroy, "__pthread_mutex_destroy");
 365
 366    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 367    pragma Import (C, pthread_mutex_lock, "__pthread_mutex_lock");
 368
 369    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 370    pragma Import (C, pthread_mutex_unlock, "__pthread_mutex_unlock");
 371
 372    function pthread_condattr_init
 373      (attr : access pthread_condattr_t) return int;
 374    pragma Import (C, pthread_condattr_init);
 375
 376    function pthread_condattr_destroy
 377      (attr : access pthread_condattr_t) return int;
 378    pragma Import (C, pthread_condattr_destroy);
 379
 380    function pthread_cond_init
 381      (cond : access pthread_cond_t;
 382       attr : access pthread_condattr_t) return int;
 383    pragma Import (C, pthread_cond_init, "__pthread_cond_init");
 384
 385    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 386    pragma Import (C, pthread_cond_destroy, "__pthread_cond_destroy");
 387
 388    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 389    pragma Import (C, pthread_cond_signal, "__pthread_cond_signal");
 390
 391    function pthread_cond_wait
 392      (cond  : access pthread_cond_t;
 393       mutex : access pthread_mutex_t) return  int;
 394    pragma Import (C, pthread_cond_wait, "__pthread_cond_wait");
 395
 396    function pthread_cond_timedwait
 397      (cond    : access pthread_cond_t;
 398       mutex   : access pthread_mutex_t;
 399       abstime : access timespec) return int;
 400    pragma Import (C, pthread_cond_timedwait, "__pthread_cond_timedwait");
 401
 402    --------------------------
 403    -- POSIX.1c  Section 13 --
 404    --------------------------
 405
 406    function pthread_mutexattr_setprotocol
 407      (attr     : access pthread_mutexattr_t;
 408       protocol : int) return int;
 409    pragma Import (C, pthread_mutexattr_setprotocol);
 410
 411    function pthread_mutexattr_setprioceiling
 412      (attr     : access pthread_mutexattr_t;
 413       prioceiling : int) return int;
 414    pragma Import (C, pthread_mutexattr_setprioceiling);
 415
 416    type struct_sched_param is record
 417       sched_priority : int;  --  scheduling priority
 418    end record;
 419
 420    function pthread_setschedparam
 421      (thread : pthread_t;
 422       policy : int;
 423       param  : access struct_sched_param) return int;
 424    pragma Import (C, pthread_setschedparam);
 425
 426    function pthread_attr_setscope
 427      (attr            : access pthread_attr_t;
 428       contentionscope : int) return int;
 429    pragma Import (C, pthread_attr_setscope);
 430
 431    function pthread_attr_setinheritsched
 432      (attr            : access pthread_attr_t;
 433       inheritsched    : int) return int;
 434    pragma Import (C, pthread_attr_setinheritsched,
 435      "__pthread_attr_setinheritsched");
 436
 437    function pthread_attr_setschedpolicy
 438      (attr : access pthread_attr_t; policy : int) return int;
 439    pragma Import (C, pthread_attr_setschedpolicy);
 440
 441    function pthread_attr_setschedparam
 442      (attr        : access pthread_attr_t;
 443       sched_param : access struct_sched_param) return int;
 444    pragma Import (C, pthread_attr_setschedparam);
 445
 446    function sched_yield return int;
 447    pragma Import (C, sched_yield);
 448
 449    --------------------------
 450    -- P1003.1c  Section 16 --
 451    --------------------------
 452
 453    function pthread_attr_init (attributes : access pthread_attr_t)
 454      return int;
 455    pragma Import (C, pthread_attr_init);
 456
 457    function pthread_attr_destroy (attributes : access pthread_attr_t)
 458      return int;
 459    pragma Import (C, pthread_attr_destroy);
 460
 461    function pthread_attr_setdetachstate
 462      (attr        : access pthread_attr_t;
 463       detachstate : int) return int;
 464    pragma Import (C, pthread_attr_setdetachstate);
 465
 466    function pthread_attr_setstacksize
 467      (attr      : access pthread_attr_t;
 468       stacksize : size_t) return int;
 469    pragma Import (C, pthread_attr_setstacksize, "__pthread_attr_setstacksize");
 470
 471    function pthread_create
 472      (thread        : access pthread_t;
 473       attributes    : access pthread_attr_t;
 474       start_routine : Thread_Body;
 475       arg           : System.Address) return int;
 476    pragma Import (C, pthread_create, "__pthread_create");
 477
 478    procedure pthread_exit (status : System.Address);
 479    pragma Import (C, pthread_exit, "__pthread_exit");
 480
 481    function pthread_self return pthread_t;
 482    pragma Inline (pthread_self);
 483
 484    --------------------------
 485    -- POSIX.1c  Section 17 --
 486    --------------------------
 487
 488    function pthread_setspecific
 489      (key : pthread_key_t; value : System.Address) return int;
 490    pragma Import (C, pthread_setspecific, "__pthread_setspecific");
 491
 492    function pthread_getspecific (key : pthread_key_t) return System.Address;
 493    pragma Import (C, pthread_getspecific, "__pthread_getspecific");
 494
 495    type destructor_pointer is access procedure (arg : System.Address);
 496
 497    function pthread_key_create
 498      (key        : access pthread_key_t;
 499       destructor : destructor_pointer) return int;
 500    pragma Import (C, pthread_key_create);
 501
 502 private
 503
 504    type sigset_t is new unsigned_long;
 505
 506    type pid_t is new int;
 507
 508    type time_t is new int;
 509
 510    type timespec is record
 511       tv_sec  : time_t;
 512       tv_nsec : long;
 513    end record;
 514    pragma Convention (C, timespec);
 515
 516    type clockid_t is new int;
 517    CLOCK_REALTIME : constant clockid_t := 1;
 518
 519    type struct_timeval is record
 520       tv_sec  : time_t;
 521       tv_usec : time_t;
 522    end record;
 523    pragma Convention (C, struct_timeval);
 524
 525    type unsigned_long_array is array (Natural range <>) of unsigned_long;
 526
 527    type pthread_t is new System.Address;
 528
 529    type pthread_teb_t is record
 530       reserved1     : System.Address;
 531       reserved2     : System.Address;
 532       size          : unsigned_short;
 533       version       : unsigned_char;
 534       reserved3     : unsigned_char;
 535       external      : unsigned_char;
 536       reserved4     : char_array (0 .. 1);
 537       creator       : unsigned_char;
 538       sequence      : unsigned_long;
 539       reserved5     : unsigned_long_array (0 .. 1);
 540       per_kt_area   : System.Address;
 541       stack_base    : System.Address;
 542       stack_reserve : System.Address;
 543       stack_yellow  : System.Address;
 544       stack_guard   : System.Address;
 545       stack_size    : unsigned_long;
 546       tsd_values    : System.Address;
 547       tsd_count     : unsigned_long;
 548       reserved6     : unsigned;
 549       reserved7     : unsigned;
 550       thread_flags  : unsigned;
 551       thd_errno     : int;
 552       stack_hiwater : System.Address;
 553       home_rad      : unsigned_long;
 554    end record;
 555    pragma Convention (C, pthread_teb_t);
 556
 557    type pthread_cond_t is record
 558       state     : unsigned;
 559       valid     : unsigned;
 560       name      : System.Address;
 561       arg       : unsigned;
 562       reserved1 : unsigned;
 563       sequence  : unsigned_long;
 564       block     : System.Address;
 565    end record;
 566    pragma Convention (C, pthread_cond_t);
 567
 568    type pthread_attr_t is record
 569       valid    : long;
 570       name     : System.Address;
 571       arg      : unsigned_long;
 572       reserved : unsigned_long_array (0 .. 18);
 573    end record;
 574    pragma Convention (C, pthread_attr_t);
 575
 576    type pthread_mutex_t is record
 577       lock     : unsigned;
 578       valid    : unsigned;
 579       name     : System.Address;
 580       arg      : unsigned;
 581       depth    : unsigned;
 582       sequence : unsigned_long;
 583       owner    : unsigned_long;
 584       block    : System.Address;
 585    end record;
 586    for pthread_mutex_t'Size use 8 * 48;
 587    pragma Convention (C, pthread_mutex_t);
 588
 589    type pthread_mutexattr_t is record
 590       valid    : long;
 591       reserved : unsigned_long_array (0 .. 14);
 592    end record;
 593    pragma Convention (C, pthread_mutexattr_t);
 594
 595    type pthread_condattr_t is record
 596       valid    : long;
 597       reserved : unsigned_long_array (0 .. 12);
 598    end record;
 599    pragma Convention (C, pthread_condattr_t);
 600
 601    type pthread_key_t is new unsigned;
 602
 603 end System.OS_Interface;