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) 1995-2008, 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,  51  Franklin  Street,  Fifth  Floor, --
  21 -- Boston, MA 02110-1301, 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 Tru64 version of this package
  36
  37 --  This package encapsulates all direct interfaces to OS services
  38 --  that are needed by the tasking run-time (libgnarl).
  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
  45 with Ada.Unchecked_Conversion;
  46
  47 package System.OS_Interface is
  48    pragma Preelaborate;
  49
  50    pragma Linker_Options ("-lpthread");
  51    pragma Linker_Options ("-lmach");
  52    pragma Linker_Options ("-lexc");
  53    pragma Linker_Options ("-lrt");
  54
  55    subtype int            is Interfaces.C.int;
  56    subtype short          is Interfaces.C.short;
  57    subtype long           is Interfaces.C.long;
  58    subtype unsigned       is Interfaces.C.unsigned;
  59    subtype unsigned_short is Interfaces.C.unsigned_short;
  60    subtype unsigned_long  is Interfaces.C.unsigned_long;
  61    subtype unsigned_char  is Interfaces.C.unsigned_char;
  62    subtype plain_char     is Interfaces.C.plain_char;
  63    subtype size_t         is Interfaces.C.size_t;
  64    subtype char_array     is Interfaces.C.char_array;
  65
  66    -----------
  67    -- Errno --
  68    -----------
  69
  70    function errno return int;
  71    pragma Import (C, errno, "_Geterrno");
  72
  73    EAGAIN    : constant := 35;
  74    EINTR     : constant := 4;
  75    EINVAL    : constant := 22;
  76    ENOMEM    : constant := 12;
  77    ETIMEDOUT : constant := 60;
  78
  79    -------------
  80    -- Signals --
  81    -------------
  82
  83    Max_Interrupt : constant := 48;
  84    type Signal is new int range 0 .. Max_Interrupt;
  85    for Signal'Size use int'Size;
  86
  87    SIGHUP     : constant := 1; --  hangup
  88    SIGINT     : constant := 2; --  interrupt (rubout)
  89    SIGQUIT    : constant := 3; --  quit (ASCD FS)
  90    SIGILL     : constant := 4; --  illegal instruction (not reset)
  91    SIGTRAP    : constant := 5; --  trace trap (not reset)
  92    SIGABRT    : constant := 6; --  used by abort, replace SIGIOT in the  future
  93    SIGIOT     : constant := 6; --  abort (terminate) process
  94    SIGLOST    : constant := 6; --  old BSD signal ??
  95    SIGEMT     : constant := 7; --  EMT instruction
  96    SIGFPE     : constant := 8; --  floating point exception
  97    SIGKILL    : constant := 9; --  kill (cannot be caught or ignored)
  98    SIGBUS     : constant := 10; --  bus error
  99    SIGSEGV    : constant := 11; --  segmentation violation
 100    SIGSYS     : constant := 12; --  bad argument to system call
 101    SIGPIPE    : constant := 13; --  write on a pipe with no one to read it
 102    SIGALRM    : constant := 14; --  alarm clock
 103    SIGTERM    : constant := 15; --  software termination signal from kill
 104    SIGURG     : constant := 16; --  urgent condition on IO channel
 105    SIGIOINT   : constant := 16; --  printer to backend error signal
 106    SIGSTOP    : constant := 17; --  stop (cannot be caught or ignored)
 107    SIGTSTP    : constant := 18; --  user stop requested from tty
 108    SIGCONT    : constant := 19; --  stopped process has been continued
 109    SIGCHLD    : constant := 20; --  child status change
 110    SIGTTIN    : constant := 21; --  background tty read attempted
 111    SIGTTOU    : constant := 22; --  background tty write attempted
 112    SIGPOLL    : constant := 23; --  I/O possible, or completed
 113    SIGIO      : constant := 23; --  STREAMS version of SIGPOLL
 114    SIGAIO     : constant := 23; --  base lan i/o
 115    SIGPTY     : constant := 23; --  pty i/o
 116    SIGXCPU    : constant := 24; --  CPU time limit exceeded
 117    SIGXFSZ    : constant := 25; --  filesize limit exceeded
 118    SIGVTALRM  : constant := 26; --  virtual timer expired
 119    SIGPROF    : constant := 27; --  profiling timer expired
 120    SIGWINCH   : constant := 28; --  window size change
 121    SIGINFO    : constant := 29; --  information request
 122    SIGPWR     : constant := 29; --  Power Fail/Restart -- SVID3/SVR4
 123    SIGUSR1    : constant := 30; --  user defined signal 1
 124    SIGUSR2    : constant := 31; --  user defined signal 2
 125    SIGRESV    : constant := 32; --  reserved by Digital for future use
 126
 127    SIGADAABORT : constant := SIGABRT;
 128
 129    type Signal_Set is array (Natural range <>) of Signal;
 130
 131    Unmasked    : constant Signal_Set := (0 .. 0 => SIGTRAP);
 132    Reserved    : constant Signal_Set := (SIGALRM, SIGABRT, SIGKILL, SIGSTOP);
 133
 134    type sigset_t is private;
 135
 136    function sigaddset (set : access sigset_t; sig : Signal) return int;
 137    pragma Import (C, sigaddset);
 138
 139    function sigdelset (set : access sigset_t; sig : Signal) return int;
 140    pragma Import (C, sigdelset);
 141
 142    function sigfillset (set : access sigset_t) return int;
 143    pragma Import (C, sigfillset);
 144
 145    function sigismember (set : access sigset_t; sig : Signal) return int;
 146    pragma Import (C, sigismember);
 147
 148    function sigemptyset (set : access sigset_t) return int;
 149    pragma Import (C, sigemptyset);
 150
 151    type union_type_3 is new String (1 .. 116);
 152    type siginfo_t is record
 153       si_signo     : int;
 154       si_errno     : int;
 155       si_code      : int;
 156       X_data       : union_type_3;
 157    end record;
 158    for siginfo_t'Size use 8 * 128;
 159    pragma Convention (C, siginfo_t);
 160
 161    type struct_sigaction is record
 162       sa_handler : System.Address;
 163       sa_mask    : sigset_t;
 164       sa_flags   : int;
 165       sa_signo   : int;
 166    end record;
 167    pragma Convention (C, struct_sigaction);
 168    type struct_sigaction_ptr is access all struct_sigaction;
 169
 170    SIG_BLOCK   : constant := 1;
 171    SIG_UNBLOCK : constant := 2;
 172    SIG_SETMASK : constant := 3;
 173
 174    SIG_DFL : constant := 0;
 175    SIG_IGN : constant := 1;
 176
 177    SA_NODEFER : constant := 8;
 178    SA_SIGINFO : constant := 16#40#;
 179    SA_ONSTACK : constant := 16#01#;
 180
 181    function sigaction
 182      (sig  : Signal;
 183       act  : struct_sigaction_ptr;
 184       oact : struct_sigaction_ptr) return int;
 185    pragma Import (C, sigaction);
 186
 187    ----------
 188    -- Time --
 189    ----------
 190
 191    type timespec is private;
 192
 193    function nanosleep (rqtp, rmtp : access timespec)  return int;
 194    pragma Import (C, nanosleep);
 195
 196    type clockid_t is private;
 197
 198    CLOCK_REALTIME : constant clockid_t;
 199
 200    function clock_gettime
 201      (clock_id : clockid_t;
 202       tp       : access timespec) return int;
 203    pragma Import (C, clock_gettime);
 204
 205    function To_Duration (TS : timespec) return Duration;
 206    pragma Inline (To_Duration);
 207
 208    function To_Timespec (D : Duration) return timespec;
 209    pragma Inline (To_Timespec);
 210
 211    type struct_timezone is record
 212       tz_minuteswest : int;
 213       tz_dsttime     : int;
 214    end record;
 215    pragma Convention (C, struct_timezone);
 216
 217    -------------------------
 218    -- Priority Scheduling --
 219    -------------------------
 220
 221    SCHED_FIFO  : constant := 1;
 222    SCHED_RR    : constant := 2;
 223    SCHED_OTHER : constant := 3;
 224    SCHED_LFI   : constant := 5;
 225
 226    -------------
 227    -- Process --
 228    -------------
 229
 230    type pid_t is private;
 231
 232    function kill (pid : pid_t; sig : Signal) return int;
 233    pragma Import (C, kill);
 234
 235    function getpid return pid_t;
 236    pragma Import (C, getpid);
 237
 238    BIND_NO_INHERIT  : constant := 1;
 239
 240    function bind_to_cpu
 241      (pid       : pid_t;
 242       cpu_mask  : unsigned_long;
 243       flag      : unsigned_long := BIND_NO_INHERIT) return int;
 244    pragma Import (C, bind_to_cpu);
 245
 246    -------------
 247    -- Threads --
 248    -------------
 249
 250    type Thread_Body is access
 251      function (arg : System.Address) return System.Address;
 252    pragma Convention (C, Thread_Body);
 253
 254    function Thread_Body_Access is new
 255      Ada.Unchecked_Conversion (System.Address, Thread_Body);
 256
 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    -- Stack --
 276    -----------
 277
 278    Stack_Base_Available : constant Boolean := False;
 279    --  Indicates if the stack base is available on this target
 280
 281    function Get_Stack_Base (thread : pthread_t) return Address;
 282    pragma Inline (Get_Stack_Base);
 283    --  Returns the stack base of the specified thread. Only call this function
 284    --  when Stack_Base_Available is True.
 285
 286    function Get_Page_Size return size_t;
 287    function Get_Page_Size return Address;
 288    pragma Import (C, Get_Page_Size, "getpagesize");
 289    --  Returns the size of a page, or 0 if this is not relevant on this target
 290
 291    PROT_NONE  : constant := 0;
 292    PROT_READ  : constant := 1;
 293    PROT_WRITE : constant := 2;
 294    PROT_EXEC  : constant := 4;
 295    PROT_ALL   : constant := PROT_READ + PROT_WRITE + PROT_EXEC;
 296
 297    PROT_ON    : constant := PROT_READ;
 298    PROT_OFF   : constant := PROT_ALL;
 299
 300    function mprotect (addr : Address; len : size_t; prot : int) return int;
 301    pragma Import (C, mprotect);
 302
 303    procedure Hide_Unhide_Yellow_Zone (Hide : Boolean);
 304    --  Every thread except the initial one features an overflow warning area
 305    --  (called the Yellow Zone) which is just above the overflow guard area
 306    --  on the stack (called the Red Zone). During task execution, we want
 307    --  signals from the Red Zone, so we need to hide the Yellow Zone. This
 308    --  procedure is called at the start of task execution (with Hide set True)
 309    --  to hide the Yellow Zone, and at the end of task execution (with Hide
 310    --  set False) to unhide the Yellow Zone.
 311
 312    ---------------------------------------
 313    -- Nonstandard Thread Initialization --
 314    ---------------------------------------
 315
 316    procedure pthread_init;
 317    pragma Inline (pthread_init);
 318    --  This is a dummy procedure to share some GNULLI files
 319
 320    -------------------------
 321    -- POSIX.1c  Section 3 --
 322    -------------------------
 323
 324    function sigwait
 325      (set : access sigset_t;
 326       sig : access Signal) return int;
 327    pragma Import (C, sigwait, "__sigwaitd10");
 328
 329    function pthread_kill
 330      (thread : pthread_t;
 331       sig    : Signal) return int;
 332    pragma Import (C, pthread_kill);
 333
 334    function pthread_sigmask
 335      (how  : int;
 336       set  : access sigset_t;
 337       oset : access sigset_t) return int;
 338    pragma Import (C, pthread_sigmask);
 339
 340    --------------------------
 341    -- POSIX.1c  Section 11 --
 342    --------------------------
 343
 344    function pthread_mutexattr_init (attr : access pthread_mutexattr_t)
 345      return int;
 346    pragma Import (C, pthread_mutexattr_init);
 347
 348    function pthread_mutexattr_destroy
 349      (attr : access pthread_mutexattr_t) return int;
 350    pragma Import (C, pthread_mutexattr_destroy);
 351
 352    function pthread_mutex_init
 353      (mutex : access pthread_mutex_t;
 354       attr  : access pthread_mutexattr_t) return int;
 355    pragma Import (C, pthread_mutex_init, "__pthread_mutex_init");
 356
 357    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 358    pragma Import (C, pthread_mutex_destroy, "__pthread_mutex_destroy");
 359
 360    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 361    pragma Import (C, pthread_mutex_lock, "__pthread_mutex_lock");
 362
 363    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 364    pragma Import (C, pthread_mutex_unlock, "__pthread_mutex_unlock");
 365
 366    function pthread_condattr_init
 367      (attr : access pthread_condattr_t) return int;
 368    pragma Import (C, pthread_condattr_init);
 369
 370    function pthread_condattr_destroy
 371      (attr : access pthread_condattr_t) return int;
 372    pragma Import (C, pthread_condattr_destroy);
 373
 374    function pthread_cond_init
 375      (cond : access pthread_cond_t;
 376       attr : access pthread_condattr_t) return int;
 377    pragma Import (C, pthread_cond_init, "__pthread_cond_init");
 378
 379    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 380    pragma Import (C, pthread_cond_destroy, "__pthread_cond_destroy");
 381
 382    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 383    pragma Import (C, pthread_cond_signal, "__pthread_cond_signal");
 384
 385    function pthread_cond_wait
 386      (cond  : access pthread_cond_t;
 387       mutex : access pthread_mutex_t) return  int;
 388    pragma Import (C, pthread_cond_wait, "__pthread_cond_wait");
 389
 390    function pthread_cond_timedwait
 391      (cond    : access pthread_cond_t;
 392       mutex   : access pthread_mutex_t;
 393       abstime : access timespec) return int;
 394    pragma Import (C, pthread_cond_timedwait, "__pthread_cond_timedwait");
 395
 396    --------------------------
 397    -- POSIX.1c  Section 13 --
 398    --------------------------
 399
 400    function pthread_mutexattr_setprotocol
 401      (attr     : access pthread_mutexattr_t;
 402       protocol : int) return int;
 403    pragma Import (C, pthread_mutexattr_setprotocol);
 404
 405    function pthread_mutexattr_setprioceiling
 406      (attr     : access pthread_mutexattr_t;
 407       prioceiling : int) return int;
 408    pragma Import (C, pthread_mutexattr_setprioceiling);
 409
 410    type struct_sched_param is record
 411       sched_priority : int;  --  scheduling priority
 412    end record;
 413
 414    function pthread_setschedparam
 415      (thread : pthread_t;
 416       policy : int;
 417       param  : access struct_sched_param) return int;
 418    pragma Import (C, pthread_setschedparam);
 419
 420    function pthread_attr_setscope
 421      (attr            : access pthread_attr_t;
 422       contentionscope : int) return int;
 423    pragma Import (C, pthread_attr_setscope);
 424
 425    function pthread_attr_setinheritsched
 426      (attr            : access pthread_attr_t;
 427       inheritsched    : int) return int;
 428    pragma Import (C, pthread_attr_setinheritsched,
 429      "__pthread_attr_setinheritsched");
 430
 431    function pthread_attr_setschedpolicy
 432      (attr : access pthread_attr_t; policy : int) return int;
 433    pragma Import (C, pthread_attr_setschedpolicy);
 434
 435    function pthread_attr_setschedparam
 436      (attr        : access pthread_attr_t;
 437       sched_param : access struct_sched_param) return int;
 438    pragma Import (C, pthread_attr_setschedparam);
 439
 440    function sched_yield return int;
 441    pragma Import (C, sched_yield);
 442
 443    --------------------------
 444    -- P1003.1c  Section 16 --
 445    --------------------------
 446
 447    function pthread_attr_init (attributes : access pthread_attr_t)
 448      return int;
 449    pragma Import (C, pthread_attr_init);
 450
 451    function pthread_attr_destroy (attributes : access pthread_attr_t)
 452      return int;
 453    pragma Import (C, pthread_attr_destroy);
 454
 455    function pthread_attr_setdetachstate
 456      (attr        : access pthread_attr_t;
 457       detachstate : int) return int;
 458    pragma Import (C, pthread_attr_setdetachstate);
 459
 460    function pthread_attr_setstacksize
 461      (attr      : access pthread_attr_t;
 462       stacksize : size_t) return int;
 463    pragma Import (C, pthread_attr_setstacksize, "__pthread_attr_setstacksize");
 464
 465    function pthread_create
 466      (thread        : access pthread_t;
 467       attributes    : access pthread_attr_t;
 468       start_routine : Thread_Body;
 469       arg           : System.Address) return int;
 470    pragma Import (C, pthread_create, "__pthread_create");
 471
 472    procedure pthread_exit (status : System.Address);
 473    pragma Import (C, pthread_exit, "__pthread_exit");
 474
 475    function pthread_self return pthread_t;
 476    pragma Inline (pthread_self);
 477
 478    --------------------------
 479    -- POSIX.1c  Section 17 --
 480    --------------------------
 481
 482    function pthread_setspecific
 483      (key : pthread_key_t; value : System.Address) return int;
 484    pragma Import (C, pthread_setspecific, "__pthread_setspecific");
 485
 486    function pthread_getspecific (key : pthread_key_t) return System.Address;
 487    pragma Import (C, pthread_getspecific, "__pthread_getspecific");
 488
 489    type destructor_pointer is access procedure (arg : System.Address);
 490    pragma Convention (C, destructor_pointer);
 491
 492    function pthread_key_create
 493      (key        : access pthread_key_t;
 494       destructor : destructor_pointer) return int;
 495    pragma Import (C, pthread_key_create);
 496
 497 private
 498
 499    type sigset_t is new unsigned_long;
 500
 501    type pid_t is new int;
 502
 503    type time_t is new int;
 504
 505    type timespec is record
 506       tv_sec  : time_t;
 507       tv_nsec : long;
 508    end record;
 509    pragma Convention (C, timespec);
 510
 511    type clockid_t is new int;
 512    CLOCK_REALTIME : constant clockid_t := 1;
 513
 514    type unsigned_long_array is array (Natural range <>) of unsigned_long;
 515
 516    type pthread_t is new System.Address;
 517
 518    type pthread_teb_t is record
 519       reserved1     : System.Address;
 520       reserved2     : System.Address;
 521       size          : unsigned_short;
 522       version       : unsigned_char;
 523       reserved3     : unsigned_char;
 524       external      : unsigned_char;
 525       reserved4     : char_array (0 .. 1);
 526       creator       : unsigned_char;
 527       sequence      : unsigned_long;
 528       reserved5     : unsigned_long_array (0 .. 1);
 529       per_kt_area   : System.Address;
 530       stack_base    : System.Address;
 531       stack_reserve : System.Address;
 532       stack_yellow  : System.Address;
 533       stack_guard   : System.Address;
 534       stack_size    : unsigned_long;
 535       tsd_values    : System.Address;
 536       tsd_count     : unsigned_long;
 537       reserved6     : unsigned;
 538       reserved7     : unsigned;
 539       thread_flags  : unsigned;
 540       thd_errno     : int;
 541       stack_hiwater : System.Address;
 542       home_rad      : unsigned_long;
 543    end record;
 544    pragma Convention (C, pthread_teb_t);
 545
 546    type pthread_cond_t is record
 547       state     : unsigned;
 548       valid     : unsigned;
 549       name      : System.Address;
 550       arg       : unsigned;
 551       reserved1 : unsigned;
 552       sequence  : unsigned_long;
 553       block     : System.Address;
 554    end record;
 555    pragma Convention (C, pthread_cond_t);
 556
 557    type pthread_attr_t is record
 558       valid    : long;
 559       name     : System.Address;
 560       arg      : unsigned_long;
 561       reserved : unsigned_long_array (0 .. 18);
 562    end record;
 563    pragma Convention (C, pthread_attr_t);
 564
 565    type pthread_mutex_t is record
 566       lock     : unsigned;
 567       valid    : unsigned;
 568       name     : System.Address;
 569       arg      : unsigned;
 570       depth    : unsigned;
 571       sequence : unsigned_long;
 572       owner    : unsigned_long;
 573       block    : System.Address;
 574    end record;
 575    for pthread_mutex_t'Size use 8 * 48;
 576    pragma Convention (C, pthread_mutex_t);
 577
 578    type pthread_mutexattr_t is record
 579       valid    : long;
 580       reserved : unsigned_long_array (0 .. 14);
 581    end record;
 582    pragma Convention (C, pthread_mutexattr_t);
 583
 584    type pthread_condattr_t is record
 585       valid    : long;
 586       reserved : unsigned_long_array (0 .. 12);
 587    end record;
 588    pragma Convention (C, pthread_condattr_t);
 589
 590    type pthread_key_t is new unsigned;
 591
 592 end System.OS_Interface;