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 --                                                                          --
  10 --          Copyright (C) 1999-2001 Free Software Foundation, Inc.          --
  11 --                                                                          --
  12 -- GNARL is free software; you can  redistribute it  and/or modify it under --
  13 -- terms of the  GNU General Public License as published  by the Free Soft- --
  14 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  15 -- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
  16 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  17 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  18 -- for  more details.  You should have  received  a copy of the GNU General --
  19 -- Public License  distributed with GNARL; see file COPYING.  If not, write --
  20 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  21 -- MA 02111-1307, USA.                                                      --
  22 --                                                                          --
  23 -- As a special exception,  if other files  instantiate  generics from this --
  24 -- unit, or you link  this unit with other files  to produce an executable, --
  25 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  26 -- covered  by the  GNU  General  Public  License.  This exception does not --
  27 -- however invalidate  any other reasons why  the executable file  might be --
  28 -- covered by the  GNU Public License.                                      --
  29 --                                                                          --
  30 -- GNARL was developed by the GNARL team at Florida State University. It is --
  31 -- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
  32 -- State University (http://www.gnat.com).                                  --
  33 --                                                                          --
  34 ------------------------------------------------------------------------------
  35
  36 --  This is a HPUX 11.0 (Native THREADS) version of this package.
  37
  38 --  This package encapsulates all direct interfaces to OS services
  39 --  that are needed by children of System.
  40
  41 --  PLEASE DO NOT add any with-clauses to this package
  42 --  or remove the pragma Elaborate_Body.
  43 --  It is designed to be a bottom-level (leaf) package.
  44
  45 with Interfaces.C;
  46 package System.OS_Interface is
  47    pragma Preelaborate;
  48
  49    pragma Linker_Options ("-lpthread");
  50
  51    subtype int            is Interfaces.C.int;
  52    subtype short          is Interfaces.C.short;
  53    subtype long           is Interfaces.C.long;
  54    subtype unsigned       is Interfaces.C.unsigned;
  55    subtype unsigned_short is Interfaces.C.unsigned_short;
  56    subtype unsigned_long  is Interfaces.C.unsigned_long;
  57    subtype unsigned_char  is Interfaces.C.unsigned_char;
  58    subtype plain_char     is Interfaces.C.plain_char;
  59    subtype size_t         is Interfaces.C.size_t;
  60
  61    -----------
  62    -- Errno --
  63    -----------
  64
  65    function errno return int;
  66    pragma Import (C, errno, "__get_errno");
  67
  68    EAGAIN    : constant := 11;
  69    EINTR     : constant := 4;
  70    EINVAL    : constant := 22;
  71    ENOMEM    : constant := 12;
  72    ETIMEDOUT : constant := 238;
  73
  74    -------------
  75    -- Signals --
  76    -------------
  77
  78    Max_Interrupt : constant := 44;
  79    type Signal is new int range 0 .. Max_Interrupt;
  80    for Signal'Size use int'Size;
  81
  82    SIGHUP     : constant := 1; --  hangup
  83    SIGINT     : constant := 2; --  interrupt (rubout)
  84    SIGQUIT    : constant := 3; --  quit (ASCD FS)
  85    SIGILL     : constant := 4; --  illegal instruction (not reset)
  86    SIGTRAP    : constant := 5; --  trace trap (not reset)
  87    SIGIOT     : constant := 6; --  IOT instruction
  88    SIGABRT    : constant := 6; --  used by abort, replace SIGIOT in the  future
  89    SIGEMT     : constant := 7; --  EMT instruction
  90    SIGFPE     : constant := 8; --  floating point exception
  91    SIGKILL    : constant := 9; --  kill (cannot be caught or ignored)
  92    SIGBUS     : constant := 10; --  bus error
  93    SIGSEGV    : constant := 11; --  segmentation violation
  94    SIGSYS     : constant := 12; --  bad argument to system call
  95    SIGPIPE    : constant := 13; --  write on a pipe with no one to read it
  96    SIGALRM    : constant := 14; --  alarm clock
  97    SIGTERM    : constant := 15; --  software termination signal from kill
  98    SIGUSR1    : constant := 16; --  user defined signal 1
  99    SIGUSR2    : constant := 17; --  user defined signal 2
 100    SIGCLD     : constant := 18; --  alias for SIGCHLD
 101    SIGCHLD    : constant := 18; --  child status change
 102    SIGPWR     : constant := 19; --  power-fail restart
 103    SIGVTALRM  : constant := 20; --  virtual timer alarm
 104    SIGPROF    : constant := 21; --  profiling timer alarm
 105    SIGIO      : constant := 22; --  asynchronous I/O
 106    SIGPOLL    : constant := 22; --  pollable event occurred
 107    SIGWINCH   : constant := 23; --  window size change
 108    SIGSTOP    : constant := 24; --  stop (cannot be caught or ignored)
 109    SIGTSTP    : constant := 25; --  user stop requested from tty
 110    SIGCONT    : constant := 26; --  stopped process has been continued
 111    SIGTTIN    : constant := 27; --  background tty read attempted
 112    SIGTTOU    : constant := 28; --  background tty write attempted
 113    SIGURG     : constant := 29; --  urgent condition on IO channel
 114    SIGLOST    : constant := 30; --  remote lock lost  (NFS)
 115    SIGDIL     : constant := 32; --  DIL signal
 116    SIGXCPU    : constant := 33; --  CPU time limit exceeded (setrlimit)
 117    SIGXFSZ    : constant := 34; --  file size limit exceeded (setrlimit)
 118    SIGCANCEL  : constant := 35; --  used for pthread cancellation.
 119    SIGGFAULT  : constant := 36; --  Graphics framebuffer fault
 120
 121    SIGADAABORT : constant := SIGABRT;
 122    --  Note: on other targets, we usually use SIGABRT, but on HPUX, it
 123    --  appears that SIGABRT can't be used in sigwait(), so we use SIGTERM.
 124
 125    type Signal_Set is array (Natural range <>) of Signal;
 126
 127    Unmasked    : constant Signal_Set :=
 128      (SIGABRT, SIGPIPE, SIGBUS, SIGTRAP, SIGTTIN, SIGTTOU, SIGTSTP, SIGPROF,
 129       SIGALRM, SIGVTALRM, SIGIO, SIGCHLD);
 130
 131    Reserved    : constant Signal_Set := (SIGKILL, SIGSTOP);
 132
 133    type sigset_t is private;
 134
 135    function sigaddset (set : access sigset_t; sig : Signal) return int;
 136    pragma Import (C, sigaddset, "sigaddset");
 137
 138    function sigdelset (set : access sigset_t; sig : Signal) return int;
 139    pragma Import (C, sigdelset, "sigdelset");
 140
 141    function sigfillset (set : access sigset_t) return int;
 142    pragma Import (C, sigfillset, "sigfillset");
 143
 144    function sigismember (set : access sigset_t; sig : Signal) return int;
 145    pragma Import (C, sigismember, "sigismember");
 146
 147    function sigemptyset (set : access sigset_t) return int;
 148    pragma Import (C, sigemptyset, "sigemptyset");
 149
 150    type struct_sigaction is record
 151       sa_handler : System.Address;
 152       sa_mask    : sigset_t;
 153       sa_flags   : int;
 154    end record;
 155    pragma Convention (C, struct_sigaction);
 156    type struct_sigaction_ptr is access all struct_sigaction;
 157
 158    SIG_BLOCK   : constant := 0;
 159    SIG_UNBLOCK : constant := 1;
 160    SIG_SETMASK : constant := 2;
 161
 162    SIG_DFL : constant := 0;
 163    SIG_IGN : constant := 1;
 164
 165    function sigaction
 166      (sig  : Signal;
 167       act  : struct_sigaction_ptr;
 168       oact : struct_sigaction_ptr) return int;
 169    pragma Import (C, sigaction, "sigaction");
 170
 171    ----------
 172    -- Time --
 173    ----------
 174
 175    Time_Slice_Supported : constant Boolean := True;
 176    --  Indicates wether time slicing is supported
 177
 178    type timespec is private;
 179
 180    type clockid_t is private;
 181
 182    CLOCK_REALTIME : constant clockid_t;
 183
 184    function clock_gettime
 185      (clock_id : clockid_t;
 186       tp       : access timespec) return int;
 187    pragma Import (C, clock_gettime, "clock_gettime");
 188
 189    function To_Duration (TS : timespec) return Duration;
 190    pragma Inline (To_Duration);
 191
 192    function To_Timespec (D : Duration) return timespec;
 193    pragma Inline (To_Timespec);
 194
 195    type struct_timezone is record
 196       tz_minuteswest : int;
 197       tz_dsttime     : int;
 198    end record;
 199    pragma Convention (C, struct_timezone);
 200    type struct_timezone_ptr is access all struct_timezone;
 201
 202    type struct_timeval is private;
 203    --  This is needed on systems that do not have clock_gettime()
 204    --  but do have gettimeofday().
 205
 206    function To_Duration (TV : struct_timeval) return Duration;
 207    pragma Inline (To_Duration);
 208
 209    function To_Timeval (D : Duration) return struct_timeval;
 210    pragma Inline (To_Timeval);
 211
 212    -------------------------
 213    -- Priority Scheduling --
 214    -------------------------
 215
 216    SCHED_FIFO  : constant := 0;
 217    SCHED_RR    : constant := 1;
 218    SCHED_OTHER : constant := 2;
 219
 220    -------------
 221    -- Process --
 222    -------------
 223
 224    type pid_t is private;
 225
 226    function kill (pid : pid_t; sig : Signal) return int;
 227    pragma Import (C, kill, "kill");
 228
 229    function getpid return pid_t;
 230    pragma Import (C, getpid, "getpid");
 231
 232    ---------
 233    -- LWP --
 234    ---------
 235
 236    function lwp_self return System.Address;
 237    pragma Import (C, lwp_self, "_lwp_self");
 238
 239    -------------
 240    -- Threads --
 241    -------------
 242
 243    type Thread_Body is access
 244      function (arg : System.Address) return System.Address;
 245    type pthread_t           is private;
 246    subtype Thread_Id        is pthread_t;
 247
 248    type pthread_mutex_t     is limited private;
 249    type pthread_cond_t      is limited private;
 250    type pthread_attr_t      is limited private;
 251    type pthread_mutexattr_t is limited private;
 252    type pthread_condattr_t  is limited private;
 253    type pthread_key_t       is private;
 254
 255    PTHREAD_CREATE_DETACHED : constant := 16#de#;
 256
 257    -----------
 258    -- Stack --
 259    -----------
 260
 261    Stack_Base_Available : constant Boolean := False;
 262    --  Indicates wether the stack base is available on this target.
 263
 264    function Get_Stack_Base (thread : pthread_t) return Address;
 265    pragma Inline (Get_Stack_Base);
 266    --  returns the stack base of the specified thread.
 267    --  Only call this function when Stack_Base_Available is True.
 268
 269    function Get_Page_Size return size_t;
 270    function Get_Page_Size return Address;
 271    pragma Import (C, Get_Page_Size, "getpagesize");
 272    --  returns the size of a page, or 0 if this is not relevant on this
 273    --  target
 274
 275    PROT_NONE  : constant := 0;
 276    PROT_READ  : constant := 1;
 277    PROT_WRITE : constant := 2;
 278    PROT_EXEC  : constant := 4;
 279    PROT_ALL   : constant := PROT_READ + PROT_WRITE + PROT_EXEC;
 280
 281    PROT_ON    : constant := PROT_READ;
 282    PROT_OFF   : constant := PROT_ALL;
 283
 284    function mprotect (addr : Address; len : size_t; prot : int) return int;
 285    pragma Import (C, mprotect);
 286
 287    ---------------------------------------
 288    -- Nonstandard Thread Initialization --
 289    ---------------------------------------
 290
 291    procedure pthread_init;
 292    pragma Inline (pthread_init);
 293    --  This is a dummy procedure to share some GNULLI files
 294
 295    -------------------------
 296    -- POSIX.1c  Section 3 --
 297    -------------------------
 298
 299    function sigwait
 300      (set : access sigset_t;
 301       sig : access Signal) return int;
 302    pragma Import (C, sigwait, "sigwait");
 303
 304    function pthread_kill
 305      (thread : pthread_t;
 306       sig    : Signal) return int;
 307    pragma Import (C, pthread_kill, "pthread_kill");
 308
 309    type sigset_t_ptr is access all sigset_t;
 310
 311    function pthread_sigmask
 312      (how  : int;
 313       set  : sigset_t_ptr;
 314       oset : sigset_t_ptr) return int;
 315    pragma Import (C, pthread_sigmask, "pthread_sigmask");
 316
 317    --------------------------
 318    -- POSIX.1c  Section 11 --
 319    --------------------------
 320
 321    function pthread_mutexattr_init
 322      (attr : access pthread_mutexattr_t) return int;
 323    pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
 324
 325    function pthread_mutexattr_destroy
 326      (attr : access pthread_mutexattr_t) return int;
 327    pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
 328
 329    function pthread_mutex_init
 330      (mutex : access pthread_mutex_t;
 331       attr  : access pthread_mutexattr_t) return int;
 332    pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
 333
 334    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 335    pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
 336
 337    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 338    pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
 339
 340    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 341    pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
 342
 343    function pthread_condattr_init
 344      (attr : access pthread_condattr_t) return int;
 345    pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
 346
 347    function pthread_condattr_destroy
 348      (attr : access pthread_condattr_t) return int;
 349    pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
 350
 351    function pthread_cond_init
 352      (cond : access pthread_cond_t;
 353       attr : access pthread_condattr_t) return int;
 354    pragma Import (C, pthread_cond_init, "pthread_cond_init");
 355
 356    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 357    pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
 358
 359    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 360    pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
 361
 362    function pthread_cond_wait
 363      (cond  : access pthread_cond_t;
 364       mutex : access pthread_mutex_t) return int;
 365    pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
 366
 367    function pthread_cond_timedwait
 368      (cond    : access pthread_cond_t;
 369       mutex   : access pthread_mutex_t;
 370       abstime : access timespec) return int;
 371    pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
 372
 373    Relative_Timed_Wait : constant Boolean := False;
 374    --  pthread_cond_timedwait requires an absolute delay time
 375
 376    ----------------------------
 377    --  POSIX.1c  Section 13  --
 378    ----------------------------
 379
 380    PTHREAD_PRIO_NONE    : constant := 16#100#;
 381    PTHREAD_PRIO_PROTECT : constant := 16#200#;
 382    PTHREAD_PRIO_INHERIT : constant := 16#400#;
 383
 384    function pthread_mutexattr_setprotocol
 385      (attr     : access pthread_mutexattr_t;
 386       protocol : int) return int;
 387    pragma Import (C, pthread_mutexattr_setprotocol);
 388
 389    function pthread_mutexattr_setprioceiling
 390      (attr     : access pthread_mutexattr_t;
 391       prioceiling : int) return int;
 392    pragma Import (C, pthread_mutexattr_setprioceiling);
 393
 394    type Array_7_Int is array (0 .. 6) of int;
 395    type struct_sched_param is record
 396       sched_priority : int;
 397       sched_reserved : Array_7_Int;
 398    end record;
 399
 400    function pthread_setschedparam
 401      (thread : pthread_t;
 402       policy : int;
 403       param  : access struct_sched_param)
 404      return int;
 405    pragma Import (C, pthread_setschedparam, "pthread_setschedparam");
 406
 407    function pthread_attr_setscope
 408      (attr            : access pthread_attr_t;
 409       contentionscope : int) return int;
 410    pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
 411
 412    function pthread_attr_setinheritsched
 413      (attr         : access pthread_attr_t;
 414       inheritsched : int) return int;
 415    pragma Import (C, pthread_attr_setinheritsched);
 416
 417    function pthread_attr_setschedpolicy
 418      (attr   : access pthread_attr_t;
 419       policy : int) return int;
 420    pragma Import (C, pthread_attr_setschedpolicy);
 421
 422    function sched_yield return int;
 423    pragma Import (C, sched_yield, "sched_yield");
 424
 425    ---------------------------
 426    -- P1003.1c - Section 16 --
 427    ---------------------------
 428
 429    function pthread_attr_init
 430      (attributes : access pthread_attr_t) return int;
 431    pragma Import (C, pthread_attr_init, "__pthread_attr_init_system");
 432
 433    function pthread_attr_destroy
 434      (attributes : access pthread_attr_t) return int;
 435    pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
 436
 437    function pthread_attr_setdetachstate
 438      (attr        : access pthread_attr_t;
 439       detachstate : int) return int;
 440    pragma Import (C, pthread_attr_setdetachstate);
 441
 442    function pthread_attr_setstacksize
 443      (attr      : access pthread_attr_t;
 444       stacksize : size_t) return int;
 445    pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize");
 446
 447    function pthread_create
 448      (thread        : access pthread_t;
 449       attributes    : access pthread_attr_t;
 450       start_routine : Thread_Body;
 451       arg           : System.Address) return int;
 452    pragma Import (C, pthread_create, "__pthread_create_system");
 453
 454    procedure pthread_exit (status : System.Address);
 455    pragma Import (C, pthread_exit, "pthread_exit");
 456
 457    function pthread_self return pthread_t;
 458    pragma Import (C, pthread_self, "pthread_self");
 459
 460    --------------------------
 461    -- POSIX.1c  Section 17 --
 462    --------------------------
 463
 464    function pthread_setspecific
 465      (key   : pthread_key_t;
 466       value : System.Address) return int;
 467    pragma Import (C, pthread_setspecific, "pthread_setspecific");
 468
 469    function pthread_getspecific (key : pthread_key_t) return System.Address;
 470    pragma Import (C, pthread_getspecific, "pthread_getspecific");
 471
 472    type destructor_pointer is access procedure (arg : System.Address);
 473
 474    function pthread_key_create
 475      (key        : access pthread_key_t;
 476       destructor : destructor_pointer) return int;
 477    pragma Import (C, pthread_key_create, "pthread_key_create");
 478
 479 private
 480
 481    type unsigned_int_array_8 is array (0 .. 7) of unsigned;
 482    type sigset_t is record
 483       sigset : unsigned_int_array_8;
 484    end record;
 485    pragma Convention (C_Pass_By_Copy, sigset_t);
 486
 487    type pid_t is new int;
 488
 489    type time_t is new long;
 490
 491    type timespec is record
 492       tv_sec  : time_t;
 493       tv_nsec : long;
 494    end record;
 495    pragma Convention (C, timespec);
 496
 497    type clockid_t is new int;
 498    CLOCK_REALTIME : constant clockid_t := 1;
 499
 500    type struct_timeval is record
 501       tv_sec  : time_t;
 502       tv_usec : time_t;
 503    end record;
 504    pragma Convention (C, struct_timeval);
 505
 506    type pthread_attr_t is new int;
 507    type pthread_condattr_t is new int;
 508    type pthread_mutexattr_t is new int;
 509    type pthread_t is new int;
 510
 511    type short_array is array (Natural range <>) of short;
 512    type int_array is array (Natural range <>) of int;
 513
 514    type pthread_mutex_t is record
 515       m_short  : short_array (0 .. 1);
 516       m_int    : int;
 517       m_int1   : int_array (0 .. 3);
 518       m_pad    : int;  --  needed for 32 bit ABI, but *not* for 64 bit
 519       m_ptr    : System.Address;
 520       m_int2   : int_array (0 .. 1);
 521       m_int3   : int_array (0 .. 3);
 522       m_short2 : short_array (0 .. 1);
 523       m_int4   : int_array (0 .. 4);
 524       m_int5   : int_array (0 .. 1);
 525    end record;
 526    pragma Convention (C, pthread_mutex_t);
 527
 528    type pthread_cond_t is record
 529       c_short : short_array (0 .. 1);
 530       c_int   : int;
 531       c_int1  : int_array (0 .. 3);
 532       m_pad   : int;  --  needed for 32 bit ABI, but *not* for 64 bit
 533       m_ptr   : System.Address;
 534       c_int2  : int_array (0 .. 1);
 535       c_int3  : int_array (0 .. 1);
 536       c_int4  : int_array (0 .. 1);
 537    end record;
 538    pragma Convention (C, pthread_cond_t);
 539
 540    type pthread_key_t is new int;
 541
 542 end System.OS_Interface;