gcc/ada/s-osinte-tru64.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                 GNAT 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) 1995-2011, Free Software Foundation, Inc.         --
  11 --                                                                          --
  12 -- GNAT 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 3,  or (at your option) any later ver- --
  15 -- sion.  GNAT 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.                                     --
  18 --                                                                          --
  19 -- As a special exception under Section 7 of GPL version 3, you are granted --
  20 -- additional permissions described in the GCC Runtime Library Exception,   --
  21 -- version 3.1, as published by the Free Software Foundation.               --
  22 --                                                                          --
  23 -- You should have received a copy of the GNU General Public License and    --
  24 -- a copy of the GCC Runtime Library Exception along with this program;     --
  25 -- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
  26 -- <http://www.gnu.org/licenses/>.                                          --
  27 --                                                                          --
  28 -- GNARL was developed by the GNARL team at Florida State University.       --
  29 -- Extensive contributions were provided by Ada Core Technologies, Inc.     --
  30 --                                                                          --
  31 ------------------------------------------------------------------------------
  32
  33 --  This is the Tru64 version of this package
  34
  35 --  This package encapsulates all direct interfaces to OS services
  36 --  that are needed by the tasking run-time (libgnarl).
  37
  38 --  PLEASE DO NOT add any with-clauses to this package or remove the pragma
  39 --  Preelaborate. This package is designed to be a bottom-level (leaf) package.
  40
  41 with Interfaces.C;
  42
  43 with Ada.Unchecked_Conversion;
  44
  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    SA_ONSTACK : constant := 16#01#;
 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 new int;
 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
 213    -------------------------
 214    -- Priority Scheduling --
 215    -------------------------
 216
 217    SCHED_FIFO  : constant := 1;
 218    SCHED_RR    : constant := 2;
 219    SCHED_OTHER : constant := 3;
 220    SCHED_LFI   : constant := 5;
 221
 222    -------------
 223    -- Process --
 224    -------------
 225
 226    type pid_t is private;
 227
 228    function kill (pid : pid_t; sig : Signal) return int;
 229    pragma Import (C, kill);
 230
 231    function getpid return pid_t;
 232    pragma Import (C, getpid);
 233
 234    BIND_NO_INHERIT  : constant := 1;
 235
 236    function bind_to_cpu
 237      (pid       : pid_t;
 238       cpu_mask  : unsigned_long;
 239       flag      : unsigned_long := BIND_NO_INHERIT) return int;
 240    pragma Import (C, bind_to_cpu);
 241
 242    -------------
 243    -- Threads --
 244    -------------
 245
 246    type Thread_Body is access
 247      function (arg : System.Address) return System.Address;
 248    pragma Convention (C, Thread_Body);
 249
 250    function Thread_Body_Access is new
 251      Ada.Unchecked_Conversion (System.Address, Thread_Body);
 252
 253    type pthread_t           is private;
 254    subtype Thread_Id        is pthread_t;
 255
 256    type pthread_mutex_t     is limited private;
 257    type pthread_cond_t      is limited private;
 258    type pthread_attr_t      is limited private;
 259    type pthread_mutexattr_t is limited private;
 260    type pthread_condattr_t  is limited private;
 261    type pthread_key_t       is private;
 262
 263    PTHREAD_CREATE_DETACHED : constant := 1;
 264
 265    PTHREAD_SCOPE_PROCESS : constant := 0;
 266    PTHREAD_SCOPE_SYSTEM  : constant := 1;
 267
 268    PTHREAD_EXPLICIT_SCHED : constant := 1;
 269
 270    -----------
 271    -- Stack --
 272    -----------
 273
 274    Stack_Base_Available : constant Boolean := False;
 275    --  Indicates if the stack base is available on this target
 276
 277    function Get_Stack_Base (thread : pthread_t) return Address;
 278    pragma Inline (Get_Stack_Base);
 279    --  Returns the stack base of the specified thread. Only call this function
 280    --  when Stack_Base_Available is True.
 281
 282    function Get_Page_Size return size_t;
 283    function Get_Page_Size return Address;
 284    pragma Import (C, Get_Page_Size, "getpagesize");
 285    --  Returns the size of a page
 286
 287    PROT_NONE  : constant := 0;
 288    PROT_READ  : constant := 1;
 289    PROT_WRITE : constant := 2;
 290    PROT_EXEC  : constant := 4;
 291    PROT_ALL   : constant := PROT_READ + PROT_WRITE + PROT_EXEC;
 292
 293    PROT_ON    : constant := PROT_READ;
 294    PROT_OFF   : constant := PROT_ALL;
 295
 296    function mprotect (addr : Address; len : size_t; prot : int) return int;
 297    pragma Import (C, mprotect);
 298
 299    procedure Hide_Unhide_Yellow_Zone (Hide : Boolean);
 300    --  Every thread except the initial one features an overflow warning area
 301    --  (called the Yellow Zone) which is just above the overflow guard area
 302    --  on the stack (called the Red Zone). During task execution, we want
 303    --  signals from the Red Zone, so we need to hide the Yellow Zone. This
 304    --  procedure is called at the start of task execution (with Hide set True)
 305    --  to hide the Yellow Zone, and at the end of task execution (with Hide
 306    --  set False) to unhide the Yellow Zone.
 307
 308    ---------------------------------------
 309    -- Nonstandard Thread Initialization --
 310    ---------------------------------------
 311
 312    procedure pthread_init;
 313    pragma Inline (pthread_init);
 314    --  This is a dummy procedure to share some GNULLI files
 315
 316    -------------------------
 317    -- POSIX.1c  Section 3 --
 318    -------------------------
 319
 320    function sigwait
 321      (set : access sigset_t;
 322       sig : access Signal) return int;
 323    pragma Import (C, sigwait, "__sigwaitd10");
 324
 325    function pthread_kill
 326      (thread : pthread_t;
 327       sig    : Signal) return int;
 328    pragma Import (C, pthread_kill);
 329
 330    function pthread_sigmask
 331      (how  : int;
 332       set  : access sigset_t;
 333       oset : access sigset_t) return int;
 334    pragma Import (C, pthread_sigmask);
 335
 336    --------------------------
 337    -- POSIX.1c  Section 11 --
 338    --------------------------
 339
 340    function pthread_mutexattr_init (attr : access pthread_mutexattr_t)
 341      return int;
 342    pragma Import (C, pthread_mutexattr_init);
 343
 344    function pthread_mutexattr_destroy
 345      (attr : access pthread_mutexattr_t) return int;
 346    pragma Import (C, pthread_mutexattr_destroy);
 347
 348    function pthread_mutex_init
 349      (mutex : access pthread_mutex_t;
 350       attr  : access pthread_mutexattr_t) return int;
 351    pragma Import (C, pthread_mutex_init, "__pthread_mutex_init");
 352
 353    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 354    pragma Import (C, pthread_mutex_destroy, "__pthread_mutex_destroy");
 355
 356    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 357    pragma Import (C, pthread_mutex_lock, "__pthread_mutex_lock");
 358
 359    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 360    pragma Import (C, pthread_mutex_unlock, "__pthread_mutex_unlock");
 361
 362    function pthread_condattr_init
 363      (attr : access pthread_condattr_t) return int;
 364    pragma Import (C, pthread_condattr_init);
 365
 366    function pthread_condattr_destroy
 367      (attr : access pthread_condattr_t) return int;
 368    pragma Import (C, pthread_condattr_destroy);
 369
 370    function pthread_cond_init
 371      (cond : access pthread_cond_t;
 372       attr : access pthread_condattr_t) return int;
 373    pragma Import (C, pthread_cond_init, "__pthread_cond_init");
 374
 375    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 376    pragma Import (C, pthread_cond_destroy, "__pthread_cond_destroy");
 377
 378    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 379    pragma Import (C, pthread_cond_signal, "__pthread_cond_signal");
 380
 381    function pthread_cond_wait
 382      (cond  : access pthread_cond_t;
 383       mutex : access pthread_mutex_t) return  int;
 384    pragma Import (C, pthread_cond_wait, "__pthread_cond_wait");
 385
 386    function pthread_cond_timedwait
 387      (cond    : access pthread_cond_t;
 388       mutex   : access pthread_mutex_t;
 389       abstime : access timespec) return int;
 390    pragma Import (C, pthread_cond_timedwait, "__pthread_cond_timedwait");
 391
 392    --------------------------
 393    -- POSIX.1c  Section 13 --
 394    --------------------------
 395
 396    function pthread_mutexattr_setprotocol
 397      (attr     : access pthread_mutexattr_t;
 398       protocol : int) return int;
 399    pragma Import (C, pthread_mutexattr_setprotocol);
 400
 401    function pthread_mutexattr_setprioceiling
 402      (attr     : access pthread_mutexattr_t;
 403       prioceiling : int) return int;
 404    pragma Import (C, pthread_mutexattr_setprioceiling);
 405
 406    type struct_sched_param is record
 407       sched_priority : int;  --  scheduling priority
 408    end record;
 409
 410    function pthread_setschedparam
 411      (thread : pthread_t;
 412       policy : int;
 413       param  : access struct_sched_param) return int;
 414    pragma Import (C, pthread_setschedparam);
 415
 416    function pthread_attr_setscope
 417      (attr            : access pthread_attr_t;
 418       contentionscope : int) return int;
 419    pragma Import (C, pthread_attr_setscope);
 420
 421    function pthread_attr_setinheritsched
 422      (attr            : access pthread_attr_t;
 423       inheritsched    : int) return int;
 424    pragma Import (C, pthread_attr_setinheritsched,
 425      "__pthread_attr_setinheritsched");
 426
 427    function pthread_attr_setschedpolicy
 428      (attr : access pthread_attr_t; policy : int) return int;
 429    pragma Import (C, pthread_attr_setschedpolicy);
 430
 431    function pthread_attr_setschedparam
 432      (attr        : access pthread_attr_t;
 433       sched_param : access struct_sched_param) return int;
 434    pragma Import (C, pthread_attr_setschedparam);
 435
 436    function sched_yield return int;
 437    pragma Import (C, sched_yield);
 438
 439    --------------------------
 440    -- P1003.1c  Section 16 --
 441    --------------------------
 442
 443    function pthread_attr_init (attributes : access pthread_attr_t)
 444      return int;
 445    pragma Import (C, pthread_attr_init);
 446
 447    function pthread_attr_destroy (attributes : access pthread_attr_t)
 448      return int;
 449    pragma Import (C, pthread_attr_destroy);
 450
 451    function pthread_attr_setdetachstate
 452      (attr        : access pthread_attr_t;
 453       detachstate : int) return int;
 454    pragma Import (C, pthread_attr_setdetachstate);
 455
 456    function pthread_attr_setstacksize
 457      (attr      : access pthread_attr_t;
 458       stacksize : size_t) return int;
 459    pragma Import (C, pthread_attr_setstacksize, "__pthread_attr_setstacksize");
 460
 461    function pthread_create
 462      (thread        : access pthread_t;
 463       attributes    : access pthread_attr_t;
 464       start_routine : Thread_Body;
 465       arg           : System.Address) return int;
 466    pragma Import (C, pthread_create, "__pthread_create");
 467
 468    procedure pthread_exit (status : System.Address);
 469    pragma Import (C, pthread_exit, "__pthread_exit");
 470
 471    function pthread_self return pthread_t;
 472    pragma Inline (pthread_self);
 473
 474    --------------------------
 475    -- POSIX.1c  Section 17 --
 476    --------------------------
 477
 478    function pthread_setspecific
 479      (key : pthread_key_t; value : System.Address) return int;
 480    pragma Import (C, pthread_setspecific, "__pthread_setspecific");
 481
 482    function pthread_getspecific (key : pthread_key_t) return System.Address;
 483    pragma Import (C, pthread_getspecific, "__pthread_getspecific");
 484
 485    type destructor_pointer is access procedure (arg : System.Address);
 486    pragma Convention (C, destructor_pointer);
 487
 488    function pthread_key_create
 489      (key        : access pthread_key_t;
 490       destructor : destructor_pointer) return int;
 491    pragma Import (C, pthread_key_create);
 492
 493 private
 494
 495    type sigset_t is new unsigned_long;
 496
 497    type pid_t is new int;
 498
 499    type time_t is new int;
 500
 501    type timespec is record
 502       tv_sec  : time_t;
 503       tv_nsec : long;
 504    end record;
 505    pragma Convention (C, timespec);
 506
 507    type unsigned_long_array is array (Natural range <>) of unsigned_long;
 508
 509    type pthread_t is new System.Address;
 510
 511    type pthread_teb_t is record
 512       reserved1     : System.Address;
 513       reserved2     : System.Address;
 514       size          : unsigned_short;
 515       version       : unsigned_char;
 516       reserved3     : unsigned_char;
 517       external      : unsigned_char;
 518       reserved4     : char_array (0 .. 1);
 519       creator       : unsigned_char;
 520       sequence      : unsigned_long;
 521       reserved5     : unsigned_long_array (0 .. 1);
 522       per_kt_area   : System.Address;
 523       stack_base    : System.Address;
 524       stack_reserve : System.Address;
 525       stack_yellow  : System.Address;
 526       stack_guard   : System.Address;
 527       stack_size    : unsigned_long;
 528       tsd_values    : System.Address;
 529       tsd_count     : unsigned_long;
 530       reserved6     : unsigned;
 531       reserved7     : unsigned;
 532       thread_flags  : unsigned;
 533       thd_errno     : int;
 534       stack_hiwater : System.Address;
 535       home_rad      : unsigned_long;
 536    end record;
 537    pragma Convention (C, pthread_teb_t);
 538
 539    type pthread_cond_t is record
 540       state     : unsigned;
 541       valid     : unsigned;
 542       name      : System.Address;
 543       arg       : unsigned;
 544       reserved1 : unsigned;
 545       sequence  : unsigned_long;
 546       block     : System.Address;
 547    end record;
 548    pragma Convention (C, pthread_cond_t);
 549
 550    type pthread_attr_t is record
 551       valid    : long;
 552       name     : System.Address;
 553       arg      : unsigned_long;
 554       reserved : unsigned_long_array (0 .. 18);
 555    end record;
 556    pragma Convention (C, pthread_attr_t);
 557
 558    type pthread_mutex_t is record
 559       lock     : unsigned;
 560       valid    : unsigned;
 561       name     : System.Address;
 562       arg      : unsigned;
 563       depth    : unsigned;
 564       sequence : unsigned_long;
 565       owner    : unsigned_long;
 566       block    : System.Address;
 567    end record;
 568    for pthread_mutex_t'Size use 8 * 48;
 569    pragma Convention (C, pthread_mutex_t);
 570
 571    type pthread_mutexattr_t is record
 572       valid    : long;
 573       reserved : unsigned_long_array (0 .. 14);
 574    end record;
 575    pragma Convention (C, pthread_mutexattr_t);
 576
 577    type pthread_condattr_t is record
 578       valid    : long;
 579       reserved : unsigned_long_array (0 .. 12);
 580    end record;
 581    pragma Convention (C, pthread_condattr_t);
 582
 583    type pthread_key_t is new unsigned;
 584
 585 end System.OS_Interface;