gomp-20050608-branch/gcc/ada/s-osinte-hpux.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) 1995-2006, 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 a HPUX 11.0 (Native THREADS) 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 --  This package encapsulates all direct interfaces to OS services
  41 --  that are needed by children of System.
  42
  43 --  PLEASE DO NOT add any with-clauses to this package or remove the pragma
  44 --  Preelaborate. This package is designed to be a bottom-level (leaf) package.
  45
  46 with Interfaces.C;
  47 with Unchecked_Conversion;
  48
  49 package System.OS_Interface is
  50    pragma Preelaborate;
  51
  52    pragma Linker_Options ("-lpthread");
  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
  64    -----------
  65    -- Errno --
  66    -----------
  67
  68    function errno return int;
  69    pragma Import (C, errno, "__get_errno");
  70
  71    EAGAIN    : constant := 11;
  72    EINTR     : constant := 4;
  73    EINVAL    : constant := 22;
  74    ENOMEM    : constant := 12;
  75    ETIMEDOUT : constant := 238;
  76
  77    -------------
  78    -- Signals --
  79    -------------
  80
  81    Max_Interrupt : constant := 44;
  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    SIGIOT     : constant := 6; --  IOT instruction
  91    SIGABRT    : constant := 6; --  used by abort, replace SIGIOT in the  future
  92    SIGEMT     : constant := 7; --  EMT instruction
  93    SIGFPE     : constant := 8; --  floating point exception
  94    SIGKILL    : constant := 9; --  kill (cannot be caught or ignored)
  95    SIGBUS     : constant := 10; --  bus error
  96    SIGSEGV    : constant := 11; --  segmentation violation
  97    SIGSYS     : constant := 12; --  bad argument to system call
  98    SIGPIPE    : constant := 13; --  write on a pipe with no one to read it
  99    SIGALRM    : constant := 14; --  alarm clock
 100    SIGTERM    : constant := 15; --  software termination signal from kill
 101    SIGUSR1    : constant := 16; --  user defined signal 1
 102    SIGUSR2    : constant := 17; --  user defined signal 2
 103    SIGCLD     : constant := 18; --  alias for SIGCHLD
 104    SIGCHLD    : constant := 18; --  child status change
 105    SIGPWR     : constant := 19; --  power-fail restart
 106    SIGVTALRM  : constant := 20; --  virtual timer alarm
 107    SIGPROF    : constant := 21; --  profiling timer alarm
 108    SIGIO      : constant := 22; --  asynchronous I/O
 109    SIGPOLL    : constant := 22; --  pollable event occurred
 110    SIGWINCH   : constant := 23; --  window size change
 111    SIGSTOP    : constant := 24; --  stop (cannot be caught or ignored)
 112    SIGTSTP    : constant := 25; --  user stop requested from tty
 113    SIGCONT    : constant := 26; --  stopped process has been continued
 114    SIGTTIN    : constant := 27; --  background tty read attempted
 115    SIGTTOU    : constant := 28; --  background tty write attempted
 116    SIGURG     : constant := 29; --  urgent condition on IO channel
 117    SIGLOST    : constant := 30; --  remote lock lost  (NFS)
 118    SIGDIL     : constant := 32; --  DIL signal
 119    SIGXCPU    : constant := 33; --  CPU time limit exceeded (setrlimit)
 120    SIGXFSZ    : constant := 34; --  file size limit exceeded (setrlimit)
 121    SIGCANCEL  : constant := 35; --  used for pthread cancellation.
 122    SIGGFAULT  : constant := 36; --  Graphics framebuffer fault
 123
 124    SIGADAABORT : constant := SIGABRT;
 125    --  Note: on other targets, we usually use SIGABRT, but on HPUX, it
 126    --  appears that SIGABRT can't be used in sigwait(), so we use SIGTERM.
 127
 128    type Signal_Set is array (Natural range <>) of Signal;
 129
 130    Unmasked    : constant Signal_Set :=
 131      (SIGABRT, SIGPIPE, SIGBUS, SIGTRAP, SIGTTIN, SIGTTOU, SIGTSTP, SIGPROF,
 132       SIGALRM, SIGVTALRM, SIGIO, SIGCHLD);
 133
 134    Reserved    : constant Signal_Set := (SIGKILL, SIGSTOP);
 135
 136    type sigset_t is private;
 137
 138    function sigaddset (set : access sigset_t; sig : Signal) return int;
 139    pragma Import (C, sigaddset, "sigaddset");
 140
 141    function sigdelset (set : access sigset_t; sig : Signal) return int;
 142    pragma Import (C, sigdelset, "sigdelset");
 143
 144    function sigfillset (set : access sigset_t) return int;
 145    pragma Import (C, sigfillset, "sigfillset");
 146
 147    function sigismember (set : access sigset_t; sig : Signal) return int;
 148    pragma Import (C, sigismember, "sigismember");
 149
 150    function sigemptyset (set : access sigset_t) return int;
 151    pragma Import (C, sigemptyset, "sigemptyset");
 152
 153    type struct_sigaction is record
 154       sa_handler : System.Address;
 155       sa_mask    : sigset_t;
 156       sa_flags   : int;
 157    end record;
 158    pragma Convention (C, struct_sigaction);
 159    type struct_sigaction_ptr is access all struct_sigaction;
 160
 161    SA_SIGINFO  : constant := 16#10#;
 162
 163    SIG_BLOCK   : constant := 0;
 164    SIG_UNBLOCK : constant := 1;
 165    SIG_SETMASK : constant := 2;
 166
 167    SIG_DFL : constant := 0;
 168    SIG_IGN : constant := 1;
 169
 170    function sigaction
 171      (sig  : Signal;
 172       act  : struct_sigaction_ptr;
 173       oact : struct_sigaction_ptr) return int;
 174    pragma Import (C, sigaction, "sigaction");
 175
 176    ----------
 177    -- Time --
 178    ----------
 179
 180    Time_Slice_Supported : constant Boolean := True;
 181    --  Indicates wether time slicing is supported
 182
 183    type timespec is private;
 184
 185    type clockid_t is private;
 186
 187    CLOCK_REALTIME : constant clockid_t;
 188
 189    function clock_gettime
 190      (clock_id : clockid_t;
 191       tp       : access timespec) return int;
 192    pragma Import (C, clock_gettime, "clock_gettime");
 193
 194    function clock_getres
 195      (clock_id : clockid_t;
 196       res      : access timespec) return int;
 197    pragma Import (C, clock_getres, "clock_getres");
 198
 199    function To_Duration (TS : timespec) return Duration;
 200    pragma Inline (To_Duration);
 201
 202    function To_Timespec (D : Duration) return timespec;
 203    pragma Inline (To_Timespec);
 204
 205    type struct_timezone is record
 206       tz_minuteswest : int;
 207       tz_dsttime     : int;
 208    end record;
 209    pragma Convention (C, struct_timezone);
 210    type struct_timezone_ptr is access all struct_timezone;
 211
 212    type struct_timeval is private;
 213    --  This is needed on systems that do not have clock_gettime()
 214    --  but do have gettimeofday().
 215
 216    function To_Duration (TV : struct_timeval) return Duration;
 217    pragma Inline (To_Duration);
 218
 219    function To_Timeval (D : Duration) return struct_timeval;
 220    pragma Inline (To_Timeval);
 221
 222    -------------------------
 223    -- Priority Scheduling --
 224    -------------------------
 225
 226    SCHED_FIFO  : constant := 0;
 227    SCHED_RR    : constant := 1;
 228    SCHED_OTHER : constant := 2;
 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, "kill");
 238
 239    function getpid return pid_t;
 240    pragma Import (C, getpid, "getpid");
 241
 242    ---------
 243    -- LWP --
 244    ---------
 245
 246    function lwp_self return System.Address;
 247    pragma Import (C, lwp_self, "_lwp_self");
 248
 249    -------------
 250    -- Threads --
 251    -------------
 252
 253    type Thread_Body is access
 254      function (arg : System.Address) return System.Address;
 255
 256    function Thread_Body_Access is new
 257      Unchecked_Conversion (System.Address, Thread_Body);
 258
 259    type pthread_t           is private;
 260    subtype Thread_Id        is pthread_t;
 261
 262    type pthread_mutex_t     is limited private;
 263    type pthread_cond_t      is limited private;
 264    type pthread_attr_t      is limited private;
 265    type pthread_mutexattr_t is limited private;
 266    type pthread_condattr_t  is limited private;
 267    type pthread_key_t       is private;
 268
 269    PTHREAD_CREATE_DETACHED : constant := 16#de#;
 270
 271    -----------
 272    -- Stack --
 273    -----------
 274
 275    Stack_Base_Available : constant Boolean := False;
 276    --  Indicates wether the stack base is available on this target.
 277
 278    function Get_Stack_Base (thread : pthread_t) return Address;
 279    pragma Inline (Get_Stack_Base);
 280    --  returns the stack base of the specified thread.
 281    --  Only call this function when Stack_Base_Available is True.
 282
 283    function Get_Page_Size return size_t;
 284    function Get_Page_Size return Address;
 285    pragma Import (C, Get_Page_Size, "getpagesize");
 286    --  returns the size of a page, or 0 if this is not relevant on this
 287    --  target
 288
 289    PROT_NONE  : constant := 0;
 290    PROT_READ  : constant := 1;
 291    PROT_WRITE : constant := 2;
 292    PROT_EXEC  : constant := 4;
 293    PROT_ALL   : constant := PROT_READ + PROT_WRITE + PROT_EXEC;
 294
 295    PROT_ON    : constant := PROT_READ;
 296    PROT_OFF   : constant := PROT_ALL;
 297
 298    function mprotect (addr : Address; len : size_t; prot : int) return int;
 299    pragma Import (C, mprotect);
 300
 301    ---------------------------------------
 302    -- Nonstandard Thread Initialization --
 303    ---------------------------------------
 304
 305    procedure pthread_init;
 306    pragma Inline (pthread_init);
 307    --  This is a dummy procedure to share some GNULLI files
 308
 309    -------------------------
 310    -- POSIX.1c  Section 3 --
 311    -------------------------
 312
 313    function sigwait
 314      (set : access sigset_t;
 315       sig : access Signal) return int;
 316    pragma Import (C, sigwait, "sigwait");
 317
 318    function pthread_kill
 319      (thread : pthread_t;
 320       sig    : Signal) return int;
 321    pragma Import (C, pthread_kill, "pthread_kill");
 322
 323    function pthread_sigmask
 324      (how  : int;
 325       set  : access sigset_t;
 326       oset : access sigset_t) return int;
 327    pragma Import (C, pthread_sigmask, "pthread_sigmask");
 328
 329    --------------------------
 330    -- POSIX.1c  Section 11 --
 331    --------------------------
 332
 333    function pthread_mutexattr_init
 334      (attr : access pthread_mutexattr_t) return int;
 335    pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
 336
 337    function pthread_mutexattr_destroy
 338      (attr : access pthread_mutexattr_t) return int;
 339    pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
 340
 341    function pthread_mutex_init
 342      (mutex : access pthread_mutex_t;
 343       attr  : access pthread_mutexattr_t) return int;
 344    pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
 345
 346    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 347    pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
 348
 349    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 350    pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
 351
 352    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 353    pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
 354
 355    function pthread_condattr_init
 356      (attr : access pthread_condattr_t) return int;
 357    pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
 358
 359    function pthread_condattr_destroy
 360      (attr : access pthread_condattr_t) return int;
 361    pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
 362
 363    function pthread_cond_init
 364      (cond : access pthread_cond_t;
 365       attr : access pthread_condattr_t) return int;
 366    pragma Import (C, pthread_cond_init, "pthread_cond_init");
 367
 368    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 369    pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
 370
 371    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 372    pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
 373
 374    function pthread_cond_wait
 375      (cond  : access pthread_cond_t;
 376       mutex : access pthread_mutex_t) return int;
 377    pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
 378
 379    function pthread_cond_timedwait
 380      (cond    : access pthread_cond_t;
 381       mutex   : access pthread_mutex_t;
 382       abstime : access timespec) return int;
 383    pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
 384
 385    Relative_Timed_Wait : constant Boolean := False;
 386    --  pthread_cond_timedwait requires an absolute delay time
 387
 388    --------------------------
 389    -- POSIX.1c  Section 13 --
 390    --------------------------
 391
 392    PTHREAD_PRIO_NONE    : constant := 16#100#;
 393    PTHREAD_PRIO_PROTECT : constant := 16#200#;
 394    PTHREAD_PRIO_INHERIT : constant := 16#400#;
 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 Array_7_Int is array (0 .. 6) of int;
 407    type struct_sched_param is record
 408       sched_priority : int;
 409       sched_reserved : Array_7_Int;
 410    end record;
 411
 412    function pthread_setschedparam
 413      (thread : pthread_t;
 414       policy : int;
 415       param  : access struct_sched_param)
 416      return int;
 417    pragma Import (C, pthread_setschedparam, "pthread_setschedparam");
 418
 419    function pthread_attr_setscope
 420      (attr            : access pthread_attr_t;
 421       contentionscope : int) return int;
 422    pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
 423
 424    function pthread_attr_setinheritsched
 425      (attr         : access pthread_attr_t;
 426       inheritsched : int) return int;
 427    pragma Import (C, pthread_attr_setinheritsched);
 428
 429    function pthread_attr_setschedpolicy
 430      (attr   : access pthread_attr_t;
 431       policy : int) return int;
 432    pragma Import (C, pthread_attr_setschedpolicy);
 433
 434    function sched_yield return int;
 435    pragma Import (C, sched_yield, "sched_yield");
 436
 437    --------------------------
 438    -- P1003.1c  Section 16 --
 439    --------------------------
 440
 441    function pthread_attr_init
 442      (attributes : access pthread_attr_t) return int;
 443    pragma Import (C, pthread_attr_init, "__pthread_attr_init_system");
 444
 445    function pthread_attr_destroy
 446      (attributes : access pthread_attr_t) return int;
 447    pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
 448
 449    function pthread_attr_setdetachstate
 450      (attr        : access pthread_attr_t;
 451       detachstate : int) return int;
 452    pragma Import (C, pthread_attr_setdetachstate);
 453
 454    function pthread_attr_setstacksize
 455      (attr      : access pthread_attr_t;
 456       stacksize : size_t) return int;
 457    pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize");
 458
 459    function pthread_create
 460      (thread        : access pthread_t;
 461       attributes    : access pthread_attr_t;
 462       start_routine : Thread_Body;
 463       arg           : System.Address) return int;
 464    pragma Import (C, pthread_create, "__pthread_create_system");
 465
 466    procedure pthread_exit (status : System.Address);
 467    pragma Import (C, pthread_exit, "pthread_exit");
 468
 469    function pthread_self return pthread_t;
 470    pragma Import (C, pthread_self, "pthread_self");
 471
 472    --------------------------
 473    -- POSIX.1c  Section 17 --
 474    --------------------------
 475
 476    function pthread_setspecific
 477      (key   : pthread_key_t;
 478       value : System.Address) return int;
 479    pragma Import (C, pthread_setspecific, "pthread_setspecific");
 480
 481    function pthread_getspecific (key : pthread_key_t) return System.Address;
 482    pragma Import (C, pthread_getspecific, "pthread_getspecific");
 483
 484    type destructor_pointer is access procedure (arg : System.Address);
 485
 486    function pthread_key_create
 487      (key        : access pthread_key_t;
 488       destructor : destructor_pointer) return int;
 489    pragma Import (C, pthread_key_create, "pthread_key_create");
 490
 491 private
 492
 493    type unsigned_int_array_8 is array (0 .. 7) of unsigned;
 494    type sigset_t is record
 495       sigset : unsigned_int_array_8;
 496    end record;
 497    pragma Convention (C_Pass_By_Copy, sigset_t);
 498
 499    type pid_t is new int;
 500
 501    type time_t is new long;
 502
 503    type timespec is record
 504       tv_sec  : time_t;
 505       tv_nsec : long;
 506    end record;
 507    pragma Convention (C, timespec);
 508
 509    type clockid_t is new int;
 510    CLOCK_REALTIME : constant clockid_t := 1;
 511
 512    type struct_timeval is record
 513       tv_sec  : time_t;
 514       tv_usec : time_t;
 515    end record;
 516    pragma Convention (C, struct_timeval);
 517
 518    type pthread_attr_t is new int;
 519    type pthread_condattr_t is new int;
 520    type pthread_mutexattr_t is new int;
 521    type pthread_t is new int;
 522
 523    type short_array is array (Natural range <>) of short;
 524    type int_array is array (Natural range <>) of int;
 525
 526    type pthread_mutex_t is record
 527       m_short : short_array (0 .. 1);
 528       m_int   : int;
 529       m_int1  : int_array (0 .. 3);
 530       m_pad   : int;
 531
 532       m_ptr : int;
 533       --  actually m_ptr is a void*, and on 32 bit ABI, m_pad is added so that
 534       --  this field takes 64 bits. On 64 bit ABI, m_pad is gone, and m_ptr is
 535       --  a 64 bit void*. Assume int'Size = 32.
 536
 537       m_int2   : int_array (0 .. 1);
 538       m_int3   : int_array (0 .. 3);
 539       m_short2 : short_array (0 .. 1);
 540       m_int4   : int_array (0 .. 4);
 541       m_int5   : int_array (0 .. 1);
 542    end record;
 543    for pthread_mutex_t'Alignment use System.Address'Alignment;
 544    pragma Convention (C, pthread_mutex_t);
 545
 546    type pthread_cond_t is record
 547       c_short : short_array (0 .. 1);
 548       c_int   : int;
 549       c_int1  : int_array (0 .. 3);
 550       m_pad   : int;
 551       m_ptr   : int;  --  see comment in pthread_mutex_t
 552       c_int2  : int_array (0 .. 1);
 553       c_int3  : int_array (0 .. 1);
 554       c_int4  : int_array (0 .. 1);
 555    end record;
 556    for pthread_cond_t'Alignment use System.Address'Alignment;
 557    pragma Convention (C, pthread_cond_t);
 558
 559    type pthread_key_t is new int;
 560
 561 end System.OS_Interface;