gcc/ada/53osinte.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) 1999-2002 Free Software Foundation, Inc.          --
  10 --                                                                          --
  11 -- GNARL is free software; you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  14 -- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNARL; see file COPYING.  If not, write --
  19 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  20 -- MA 02111-1307, USA.                                                      --
  21 --                                                                          --
  22 -- As a special exception,  if other files  instantiate  generics from this --
  23 -- unit, or you link  this unit with other files  to produce an executable, --
  24 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  25 -- covered  by the  GNU  General  Public  License.  This exception does not --
  26 -- however invalidate  any other reasons why  the executable file  might be --
  27 -- covered by the  GNU Public License.                                      --
  28 --                                                                          --
  29 -- GNARL was developed by the GNARL team at Florida State University.       --
  30 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  31 --                                                                          --
  32 ------------------------------------------------------------------------------
  33
  34 --  This is a HPUX 11.0 (Native THREADS) version of this package.
  35
  36 --  This package encapsulates all direct interfaces to OS services
  37 --  that are needed by children of System.
  38
  39 --  PLEASE DO NOT add any with-clauses to this package
  40 --  or remove the pragma Elaborate_Body.
  41 --  It is designed to be a bottom-level (leaf) package.
  42
  43 with Interfaces.C;
  44 package System.OS_Interface is
  45    pragma Preelaborate;
  46
  47    pragma Linker_Options ("-lpthread");
  48
  49    subtype int            is Interfaces.C.int;
  50    subtype short          is Interfaces.C.short;
  51    subtype long           is Interfaces.C.long;
  52    subtype unsigned       is Interfaces.C.unsigned;
  53    subtype unsigned_short is Interfaces.C.unsigned_short;
  54    subtype unsigned_long  is Interfaces.C.unsigned_long;
  55    subtype unsigned_char  is Interfaces.C.unsigned_char;
  56    subtype plain_char     is Interfaces.C.plain_char;
  57    subtype size_t         is Interfaces.C.size_t;
  58
  59    -----------
  60    -- Errno --
  61    -----------
  62
  63    function errno return int;
  64    pragma Import (C, errno, "__get_errno");
  65
  66    EAGAIN    : constant := 11;
  67    EINTR     : constant := 4;
  68    EINVAL    : constant := 22;
  69    ENOMEM    : constant := 12;
  70    ETIMEDOUT : constant := 238;
  71
  72    -------------
  73    -- Signals --
  74    -------------
  75
  76    Max_Interrupt : constant := 44;
  77    type Signal is new int range 0 .. Max_Interrupt;
  78    for Signal'Size use int'Size;
  79
  80    SIGHUP     : constant := 1; --  hangup
  81    SIGINT     : constant := 2; --  interrupt (rubout)
  82    SIGQUIT    : constant := 3; --  quit (ASCD FS)
  83    SIGILL     : constant := 4; --  illegal instruction (not reset)
  84    SIGTRAP    : constant := 5; --  trace trap (not reset)
  85    SIGIOT     : constant := 6; --  IOT instruction
  86    SIGABRT    : constant := 6; --  used by abort, replace SIGIOT in the  future
  87    SIGEMT     : constant := 7; --  EMT instruction
  88    SIGFPE     : constant := 8; --  floating point exception
  89    SIGKILL    : constant := 9; --  kill (cannot be caught or ignored)
  90    SIGBUS     : constant := 10; --  bus error
  91    SIGSEGV    : constant := 11; --  segmentation violation
  92    SIGSYS     : constant := 12; --  bad argument to system call
  93    SIGPIPE    : constant := 13; --  write on a pipe with no one to read it
  94    SIGALRM    : constant := 14; --  alarm clock
  95    SIGTERM    : constant := 15; --  software termination signal from kill
  96    SIGUSR1    : constant := 16; --  user defined signal 1
  97    SIGUSR2    : constant := 17; --  user defined signal 2
  98    SIGCLD     : constant := 18; --  alias for SIGCHLD
  99    SIGCHLD    : constant := 18; --  child status change
 100    SIGPWR     : constant := 19; --  power-fail restart
 101    SIGVTALRM  : constant := 20; --  virtual timer alarm
 102    SIGPROF    : constant := 21; --  profiling timer alarm
 103    SIGIO      : constant := 22; --  asynchronous I/O
 104    SIGPOLL    : constant := 22; --  pollable event occurred
 105    SIGWINCH   : constant := 23; --  window size change
 106    SIGSTOP    : constant := 24; --  stop (cannot be caught or ignored)
 107    SIGTSTP    : constant := 25; --  user stop requested from tty
 108    SIGCONT    : constant := 26; --  stopped process has been continued
 109    SIGTTIN    : constant := 27; --  background tty read attempted
 110    SIGTTOU    : constant := 28; --  background tty write attempted
 111    SIGURG     : constant := 29; --  urgent condition on IO channel
 112    SIGLOST    : constant := 30; --  remote lock lost  (NFS)
 113    SIGDIL     : constant := 32; --  DIL signal
 114    SIGXCPU    : constant := 33; --  CPU time limit exceeded (setrlimit)
 115    SIGXFSZ    : constant := 34; --  file size limit exceeded (setrlimit)
 116    SIGCANCEL  : constant := 35; --  used for pthread cancellation.
 117    SIGGFAULT  : constant := 36; --  Graphics framebuffer fault
 118
 119    SIGADAABORT : constant := SIGABRT;
 120    --  Note: on other targets, we usually use SIGABRT, but on HPUX, it
 121    --  appears that SIGABRT can't be used in sigwait(), so we use SIGTERM.
 122
 123    type Signal_Set is array (Natural range <>) of Signal;
 124
 125    Unmasked    : constant Signal_Set :=
 126      (SIGABRT, SIGPIPE, SIGBUS, SIGTRAP, SIGTTIN, SIGTTOU, SIGTSTP, SIGPROF,
 127       SIGALRM, SIGVTALRM, SIGIO, SIGCHLD);
 128
 129    Reserved    : constant Signal_Set := (SIGKILL, SIGSTOP);
 130
 131    type sigset_t is private;
 132
 133    function sigaddset (set : access sigset_t; sig : Signal) return int;
 134    pragma Import (C, sigaddset, "sigaddset");
 135
 136    function sigdelset (set : access sigset_t; sig : Signal) return int;
 137    pragma Import (C, sigdelset, "sigdelset");
 138
 139    function sigfillset (set : access sigset_t) return int;
 140    pragma Import (C, sigfillset, "sigfillset");
 141
 142    function sigismember (set : access sigset_t; sig : Signal) return int;
 143    pragma Import (C, sigismember, "sigismember");
 144
 145    function sigemptyset (set : access sigset_t) return int;
 146    pragma Import (C, sigemptyset, "sigemptyset");
 147
 148    type struct_sigaction is record
 149       sa_handler : System.Address;
 150       sa_mask    : sigset_t;
 151       sa_flags   : int;
 152    end record;
 153    pragma Convention (C, struct_sigaction);
 154    type struct_sigaction_ptr is access all struct_sigaction;
 155
 156    SIG_BLOCK   : constant := 0;
 157    SIG_UNBLOCK : constant := 1;
 158    SIG_SETMASK : constant := 2;
 159
 160    SIG_DFL : constant := 0;
 161    SIG_IGN : constant := 1;
 162
 163    function sigaction
 164      (sig  : Signal;
 165       act  : struct_sigaction_ptr;
 166       oact : struct_sigaction_ptr) return int;
 167    pragma Import (C, sigaction, "sigaction");
 168
 169    ----------
 170    -- Time --
 171    ----------
 172
 173    Time_Slice_Supported : constant Boolean := True;
 174    --  Indicates wether time slicing is supported
 175
 176    type timespec is private;
 177
 178    type clockid_t is private;
 179
 180    CLOCK_REALTIME : constant clockid_t;
 181
 182    function clock_gettime
 183      (clock_id : clockid_t;
 184       tp       : access timespec) return int;
 185    pragma Import (C, clock_gettime, "clock_gettime");
 186
 187    function clock_getres
 188      (clock_id : clockid_t;
 189       res      : access timespec) return int;
 190    pragma Import (C, clock_getres, "clock_getres");
 191
 192    function To_Duration (TS : timespec) return Duration;
 193    pragma Inline (To_Duration);
 194
 195    function To_Timespec (D : Duration) return timespec;
 196    pragma Inline (To_Timespec);
 197
 198    type struct_timezone is record
 199       tz_minuteswest : int;
 200       tz_dsttime     : int;
 201    end record;
 202    pragma Convention (C, struct_timezone);
 203    type struct_timezone_ptr is access all struct_timezone;
 204
 205    type struct_timeval is private;
 206    --  This is needed on systems that do not have clock_gettime()
 207    --  but do have gettimeofday().
 208
 209    function To_Duration (TV : struct_timeval) return Duration;
 210    pragma Inline (To_Duration);
 211
 212    function To_Timeval (D : Duration) return struct_timeval;
 213    pragma Inline (To_Timeval);
 214
 215    -------------------------
 216    -- Priority Scheduling --
 217    -------------------------
 218
 219    SCHED_FIFO  : constant := 0;
 220    SCHED_RR    : constant := 1;
 221    SCHED_OTHER : constant := 2;
 222
 223    -------------
 224    -- Process --
 225    -------------
 226
 227    type pid_t is private;
 228
 229    function kill (pid : pid_t; sig : Signal) return int;
 230    pragma Import (C, kill, "kill");
 231
 232    function getpid return pid_t;
 233    pragma Import (C, getpid, "getpid");
 234
 235    ---------
 236    -- LWP --
 237    ---------
 238
 239    function lwp_self return System.Address;
 240    pragma Import (C, lwp_self, "_lwp_self");
 241
 242    -------------
 243    -- Threads --
 244    -------------
 245
 246    type Thread_Body is access
 247      function (arg : System.Address) return System.Address;
 248    type pthread_t           is private;
 249    subtype Thread_Id        is pthread_t;
 250
 251    type pthread_mutex_t     is limited private;
 252    type pthread_cond_t      is limited private;
 253    type pthread_attr_t      is limited private;
 254    type pthread_mutexattr_t is limited private;
 255    type pthread_condattr_t  is limited private;
 256    type pthread_key_t       is private;
 257
 258    PTHREAD_CREATE_DETACHED : constant := 16#de#;
 259
 260    -----------
 261    -- Stack --
 262    -----------
 263
 264    Stack_Base_Available : constant Boolean := False;
 265    --  Indicates wether the stack base is available on this target.
 266
 267    function Get_Stack_Base (thread : pthread_t) return Address;
 268    pragma Inline (Get_Stack_Base);
 269    --  returns the stack base of the specified thread.
 270    --  Only call this function when Stack_Base_Available is True.
 271
 272    function Get_Page_Size return size_t;
 273    function Get_Page_Size return Address;
 274    pragma Import (C, Get_Page_Size, "getpagesize");
 275    --  returns the size of a page, or 0 if this is not relevant on this
 276    --  target
 277
 278    PROT_NONE  : constant := 0;
 279    PROT_READ  : constant := 1;
 280    PROT_WRITE : constant := 2;
 281    PROT_EXEC  : constant := 4;
 282    PROT_ALL   : constant := PROT_READ + PROT_WRITE + PROT_EXEC;
 283
 284    PROT_ON    : constant := PROT_READ;
 285    PROT_OFF   : constant := PROT_ALL;
 286
 287    function mprotect (addr : Address; len : size_t; prot : int) return int;
 288    pragma Import (C, mprotect);
 289
 290    ---------------------------------------
 291    -- Nonstandard Thread Initialization --
 292    ---------------------------------------
 293
 294    procedure pthread_init;
 295    pragma Inline (pthread_init);
 296    --  This is a dummy procedure to share some GNULLI files
 297
 298    -------------------------
 299    -- POSIX.1c  Section 3 --
 300    -------------------------
 301
 302    function sigwait
 303      (set : access sigset_t;
 304       sig : access Signal) return int;
 305    pragma Import (C, sigwait, "sigwait");
 306
 307    function pthread_kill
 308      (thread : pthread_t;
 309       sig    : Signal) return int;
 310    pragma Import (C, pthread_kill, "pthread_kill");
 311
 312    type sigset_t_ptr is access all sigset_t;
 313
 314    function pthread_sigmask
 315      (how  : int;
 316       set  : sigset_t_ptr;
 317       oset : sigset_t_ptr) return int;
 318    pragma Import (C, pthread_sigmask, "pthread_sigmask");
 319
 320    --------------------------
 321    -- POSIX.1c  Section 11 --
 322    --------------------------
 323
 324    function pthread_mutexattr_init
 325      (attr : access pthread_mutexattr_t) return int;
 326    pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
 327
 328    function pthread_mutexattr_destroy
 329      (attr : access pthread_mutexattr_t) return int;
 330    pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
 331
 332    function pthread_mutex_init
 333      (mutex : access pthread_mutex_t;
 334       attr  : access pthread_mutexattr_t) return int;
 335    pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
 336
 337    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 338    pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
 339
 340    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 341    pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
 342
 343    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 344    pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
 345
 346    function pthread_condattr_init
 347      (attr : access pthread_condattr_t) return int;
 348    pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
 349
 350    function pthread_condattr_destroy
 351      (attr : access pthread_condattr_t) return int;
 352    pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
 353
 354    function pthread_cond_init
 355      (cond : access pthread_cond_t;
 356       attr : access pthread_condattr_t) return int;
 357    pragma Import (C, pthread_cond_init, "pthread_cond_init");
 358
 359    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 360    pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
 361
 362    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 363    pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
 364
 365    function pthread_cond_wait
 366      (cond  : access pthread_cond_t;
 367       mutex : access pthread_mutex_t) return int;
 368    pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
 369
 370    function pthread_cond_timedwait
 371      (cond    : access pthread_cond_t;
 372       mutex   : access pthread_mutex_t;
 373       abstime : access timespec) return int;
 374    pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
 375
 376    Relative_Timed_Wait : constant Boolean := False;
 377    --  pthread_cond_timedwait requires an absolute delay time
 378
 379    ----------------------------
 380    --  POSIX.1c  Section 13  --
 381    ----------------------------
 382
 383    PTHREAD_PRIO_NONE    : constant := 16#100#;
 384    PTHREAD_PRIO_PROTECT : constant := 16#200#;
 385    PTHREAD_PRIO_INHERIT : constant := 16#400#;
 386
 387    function pthread_mutexattr_setprotocol
 388      (attr     : access pthread_mutexattr_t;
 389       protocol : int) return int;
 390    pragma Import (C, pthread_mutexattr_setprotocol);
 391
 392    function pthread_mutexattr_setprioceiling
 393      (attr     : access pthread_mutexattr_t;
 394       prioceiling : int) return int;
 395    pragma Import (C, pthread_mutexattr_setprioceiling);
 396
 397    type Array_7_Int is array (0 .. 6) of int;
 398    type struct_sched_param is record
 399       sched_priority : int;
 400       sched_reserved : Array_7_Int;
 401    end record;
 402
 403    function pthread_setschedparam
 404      (thread : pthread_t;
 405       policy : int;
 406       param  : access struct_sched_param)
 407      return int;
 408    pragma Import (C, pthread_setschedparam, "pthread_setschedparam");
 409
 410    function pthread_attr_setscope
 411      (attr            : access pthread_attr_t;
 412       contentionscope : int) return int;
 413    pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
 414
 415    function pthread_attr_setinheritsched
 416      (attr         : access pthread_attr_t;
 417       inheritsched : int) return int;
 418    pragma Import (C, pthread_attr_setinheritsched);
 419
 420    function pthread_attr_setschedpolicy
 421      (attr   : access pthread_attr_t;
 422       policy : int) return int;
 423    pragma Import (C, pthread_attr_setschedpolicy);
 424
 425    function sched_yield return int;
 426    pragma Import (C, sched_yield, "sched_yield");
 427
 428    ---------------------------
 429    -- P1003.1c - Section 16 --
 430    ---------------------------
 431
 432    function pthread_attr_init
 433      (attributes : access pthread_attr_t) return int;
 434    pragma Import (C, pthread_attr_init, "__pthread_attr_init_system");
 435
 436    function pthread_attr_destroy
 437      (attributes : access pthread_attr_t) return int;
 438    pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
 439
 440    function pthread_attr_setdetachstate
 441      (attr        : access pthread_attr_t;
 442       detachstate : int) return int;
 443    pragma Import (C, pthread_attr_setdetachstate);
 444
 445    function pthread_attr_setstacksize
 446      (attr      : access pthread_attr_t;
 447       stacksize : size_t) return int;
 448    pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize");
 449
 450    function pthread_create
 451      (thread        : access pthread_t;
 452       attributes    : access pthread_attr_t;
 453       start_routine : Thread_Body;
 454       arg           : System.Address) return int;
 455    pragma Import (C, pthread_create, "__pthread_create_system");
 456
 457    procedure pthread_exit (status : System.Address);
 458    pragma Import (C, pthread_exit, "pthread_exit");
 459
 460    function pthread_self return pthread_t;
 461    pragma Import (C, pthread_self, "pthread_self");
 462
 463    --------------------------
 464    -- POSIX.1c  Section 17 --
 465    --------------------------
 466
 467    function pthread_setspecific
 468      (key   : pthread_key_t;
 469       value : System.Address) return int;
 470    pragma Import (C, pthread_setspecific, "pthread_setspecific");
 471
 472    function pthread_getspecific (key : pthread_key_t) return System.Address;
 473    pragma Import (C, pthread_getspecific, "pthread_getspecific");
 474
 475    type destructor_pointer is access procedure (arg : System.Address);
 476
 477    function pthread_key_create
 478      (key        : access pthread_key_t;
 479       destructor : destructor_pointer) return int;
 480    pragma Import (C, pthread_key_create, "pthread_key_create");
 481
 482 private
 483
 484    type unsigned_int_array_8 is array (0 .. 7) of unsigned;
 485    type sigset_t is record
 486       sigset : unsigned_int_array_8;
 487    end record;
 488    pragma Convention (C_Pass_By_Copy, sigset_t);
 489
 490    type pid_t is new int;
 491
 492    type time_t is new long;
 493
 494    type timespec is record
 495       tv_sec  : time_t;
 496       tv_nsec : long;
 497    end record;
 498    pragma Convention (C, timespec);
 499
 500    type clockid_t is new int;
 501    CLOCK_REALTIME : constant clockid_t := 1;
 502
 503    type struct_timeval is record
 504       tv_sec  : time_t;
 505       tv_usec : time_t;
 506    end record;
 507    pragma Convention (C, struct_timeval);
 508
 509    type pthread_attr_t is new int;
 510    type pthread_condattr_t is new int;
 511    type pthread_mutexattr_t is new int;
 512    type pthread_t is new int;
 513
 514    type short_array is array (Natural range <>) of short;
 515    type int_array is array (Natural range <>) of int;
 516
 517    type pthread_mutex_t is record
 518       m_short  : short_array (0 .. 1);
 519       m_int    : int;
 520       m_int1   : int_array (0 .. 3);
 521       m_pad    : int;  --  needed for 32 bit ABI, but *not* for 64 bit
 522       m_ptr    : System.Address;
 523       m_int2   : int_array (0 .. 1);
 524       m_int3   : int_array (0 .. 3);
 525       m_short2 : short_array (0 .. 1);
 526       m_int4   : int_array (0 .. 4);
 527       m_int5   : int_array (0 .. 1);
 528    end record;
 529    pragma Convention (C, pthread_mutex_t);
 530
 531    type pthread_cond_t is record
 532       c_short : short_array (0 .. 1);
 533       c_int   : int;
 534       c_int1  : int_array (0 .. 3);
 535       m_pad   : int;  --  needed for 32 bit ABI, but *not* for 64 bit
 536       m_ptr   : System.Address;
 537       c_int2  : int_array (0 .. 1);
 538       c_int3  : int_array (0 .. 1);
 539       c_int4  : int_array (0 .. 1);
 540    end record;
 541    pragma Convention (C, pthread_cond_t);
 542
 543    type pthread_key_t is new int;
 544
 545 end System.OS_Interface;