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 --                             $Revision: 1.10 $
  10 --                                                                          --
  11 --          Copyright (C) 1999-2001 Free Software Foundation, Inc.          --
  12 --                                                                          --
  13 -- GNARL is free software; you can  redistribute it  and/or modify it under --
  14 -- terms of the  GNU General Public License as published  by the Free Soft- --
  15 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  16 -- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
  17 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  18 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  19 -- for  more details.  You should have  received  a copy of the GNU General --
  20 -- Public License  distributed with GNARL; see file COPYING.  If not, write --
  21 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  22 -- MA 02111-1307, USA.                                                      --
  23 --                                                                          --
  24 -- As a special exception,  if other files  instantiate  generics from this --
  25 -- unit, or you link  this unit with other files  to produce an executable, --
  26 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  27 -- covered  by the  GNU  General  Public  License.  This exception does not --
  28 -- however invalidate  any other reasons why  the executable file  might be --
  29 -- covered by the  GNU Public License.                                      --
  30 --                                                                          --
  31 -- GNARL was developed by the GNARL team at Florida State University. It is --
  32 -- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
  33 -- State University (http://www.gnat.com).                                  --
  34 --                                                                          --
  35 ------------------------------------------------------------------------------
  36
  37 --  This is a HPUX 11.0 (Native THREADS) version of this package.
  38
  39 --  This package encapsulates all direct interfaces to OS services
  40 --  that are needed by children of System.
  41
  42 --  PLEASE DO NOT add any with-clauses to this package
  43 --  or remove the pragma Elaborate_Body.
  44 --  It is designed to be a bottom-level (leaf) package.
  45
  46 with Interfaces.C;
  47 package System.OS_Interface is
  48    pragma Preelaborate;
  49
  50    pragma Linker_Options ("-lpthread");
  51
  52    subtype int            is Interfaces.C.int;
  53    subtype short          is Interfaces.C.short;
  54    subtype long           is Interfaces.C.long;
  55    subtype unsigned       is Interfaces.C.unsigned;
  56    subtype unsigned_short is Interfaces.C.unsigned_short;
  57    subtype unsigned_long  is Interfaces.C.unsigned_long;
  58    subtype unsigned_char  is Interfaces.C.unsigned_char;
  59    subtype plain_char     is Interfaces.C.plain_char;
  60    subtype size_t         is Interfaces.C.size_t;
  61
  62    -----------
  63    -- Errno --
  64    -----------
  65
  66    function errno return int;
  67    pragma Import (C, errno, "__get_errno");
  68
  69    EAGAIN    : constant := 11;
  70    EINTR     : constant := 4;
  71    EINVAL    : constant := 22;
  72    ENOMEM    : constant := 12;
  73    ETIMEDOUT : constant := 238;
  74
  75    -------------
  76    -- Signals --
  77    -------------
  78
  79    Max_Interrupt : constant := 44;
  80    type Signal is new int range 0 .. Max_Interrupt;
  81    for Signal'Size use int'Size;
  82
  83    SIGHUP     : constant := 1; --  hangup
  84    SIGINT     : constant := 2; --  interrupt (rubout)
  85    SIGQUIT    : constant := 3; --  quit (ASCD FS)
  86    SIGILL     : constant := 4; --  illegal instruction (not reset)
  87    SIGTRAP    : constant := 5; --  trace trap (not reset)
  88    SIGIOT     : constant := 6; --  IOT instruction
  89    SIGABRT    : constant := 6; --  used by abort, replace SIGIOT in the  future
  90    SIGEMT     : constant := 7; --  EMT instruction
  91    SIGFPE     : constant := 8; --  floating point exception
  92    SIGKILL    : constant := 9; --  kill (cannot be caught or ignored)
  93    SIGBUS     : constant := 10; --  bus error
  94    SIGSEGV    : constant := 11; --  segmentation violation
  95    SIGSYS     : constant := 12; --  bad argument to system call
  96    SIGPIPE    : constant := 13; --  write on a pipe with no one to read it
  97    SIGALRM    : constant := 14; --  alarm clock
  98    SIGTERM    : constant := 15; --  software termination signal from kill
  99    SIGUSR1    : constant := 16; --  user defined signal 1
 100    SIGUSR2    : constant := 17; --  user defined signal 2
 101    SIGCLD     : constant := 18; --  alias for SIGCHLD
 102    SIGCHLD    : constant := 18; --  child status change
 103    SIGPWR     : constant := 19; --  power-fail restart
 104    SIGVTALRM  : constant := 20; --  virtual timer alarm
 105    SIGPROF    : constant := 21; --  profiling timer alarm
 106    SIGIO      : constant := 22; --  asynchronous I/O
 107    SIGPOLL    : constant := 22; --  pollable event occurred
 108    SIGWINCH   : constant := 23; --  window size change
 109    SIGSTOP    : constant := 24; --  stop (cannot be caught or ignored)
 110    SIGTSTP    : constant := 25; --  user stop requested from tty
 111    SIGCONT    : constant := 26; --  stopped process has been continued
 112    SIGTTIN    : constant := 27; --  background tty read attempted
 113    SIGTTOU    : constant := 28; --  background tty write attempted
 114    SIGURG     : constant := 29; --  urgent condition on IO channel
 115    SIGLOST    : constant := 30; --  remote lock lost  (NFS)
 116    SIGDIL     : constant := 32; --  DIL signal
 117    SIGXCPU    : constant := 33; --  CPU time limit exceeded (setrlimit)
 118    SIGXFSZ    : constant := 34; --  file size limit exceeded (setrlimit)
 119    SIGCANCEL  : constant := 35; --  used for pthread cancellation.
 120    SIGGFAULT  : constant := 36; --  Graphics framebuffer fault
 121
 122    SIGADAABORT : constant := SIGABRT;
 123    --  Note: on other targets, we usually use SIGABRT, but on HPUX, it
 124    --  appears that SIGABRT can't be used in sigwait(), so we use SIGTERM.
 125
 126    type Signal_Set is array (Natural range <>) of Signal;
 127
 128    Unmasked    : constant Signal_Set :=
 129      (SIGABRT, SIGPIPE, SIGBUS, SIGTRAP, SIGTTIN, SIGTTOU, SIGTSTP, SIGPROF,
 130       SIGALRM, SIGVTALRM, SIGIO, SIGCHLD);
 131
 132    Reserved    : constant Signal_Set := (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, "sigaddset");
 138
 139    function sigdelset (set : access sigset_t; sig : Signal) return int;
 140    pragma Import (C, sigdelset, "sigdelset");
 141
 142    function sigfillset (set : access sigset_t) return int;
 143    pragma Import (C, sigfillset, "sigfillset");
 144
 145    function sigismember (set : access sigset_t; sig : Signal) return int;
 146    pragma Import (C, sigismember, "sigismember");
 147
 148    function sigemptyset (set : access sigset_t) return int;
 149    pragma Import (C, sigemptyset, "sigemptyset");
 150
 151    type struct_sigaction is record
 152       sa_handler : System.Address;
 153       sa_mask    : sigset_t;
 154       sa_flags   : int;
 155    end record;
 156    pragma Convention (C, struct_sigaction);
 157    type struct_sigaction_ptr is access all struct_sigaction;
 158
 159    SIG_BLOCK   : constant := 0;
 160    SIG_UNBLOCK : constant := 1;
 161    SIG_SETMASK : constant := 2;
 162
 163    SIG_DFL : constant := 0;
 164    SIG_IGN : constant := 1;
 165
 166    function sigaction
 167      (sig  : Signal;
 168       act  : struct_sigaction_ptr;
 169       oact : struct_sigaction_ptr) return int;
 170    pragma Import (C, sigaction, "sigaction");
 171
 172    ----------
 173    -- Time --
 174    ----------
 175
 176    Time_Slice_Supported : constant Boolean := True;
 177    --  Indicates wether time slicing is supported
 178
 179    type timespec is private;
 180
 181    type clockid_t is private;
 182
 183    CLOCK_REALTIME : constant clockid_t;
 184
 185    function clock_gettime
 186      (clock_id : clockid_t;
 187       tp       : access timespec) return int;
 188    pragma Import (C, clock_gettime, "clock_gettime");
 189
 190    function To_Duration (TS : timespec) return Duration;
 191    pragma Inline (To_Duration);
 192
 193    function To_Timespec (D : Duration) return timespec;
 194    pragma Inline (To_Timespec);
 195
 196    type struct_timezone is record
 197       tz_minuteswest : int;
 198       tz_dsttime     : int;
 199    end record;
 200    pragma Convention (C, struct_timezone);
 201    type struct_timezone_ptr is access all struct_timezone;
 202
 203    type struct_timeval is private;
 204    --  This is needed on systems that do not have clock_gettime()
 205    --  but do have gettimeofday().
 206
 207    function To_Duration (TV : struct_timeval) return Duration;
 208    pragma Inline (To_Duration);
 209
 210    function To_Timeval (D : Duration) return struct_timeval;
 211    pragma Inline (To_Timeval);
 212
 213    -------------------------
 214    -- Priority Scheduling --
 215    -------------------------
 216
 217    SCHED_FIFO  : constant := 0;
 218    SCHED_RR    : constant := 1;
 219    SCHED_OTHER : constant := 2;
 220
 221    -------------
 222    -- Process --
 223    -------------
 224
 225    type pid_t is private;
 226
 227    function kill (pid : pid_t; sig : Signal) return int;
 228    pragma Import (C, kill, "kill");
 229
 230    function getpid return pid_t;
 231    pragma Import (C, getpid, "getpid");
 232
 233    ---------
 234    -- LWP --
 235    ---------
 236
 237    function lwp_self return System.Address;
 238    pragma Import (C, lwp_self, "_lwp_self");
 239
 240    -------------
 241    -- Threads --
 242    -------------
 243
 244    type Thread_Body is access
 245      function (arg : System.Address) return System.Address;
 246    type pthread_t           is private;
 247    subtype Thread_Id        is pthread_t;
 248
 249    type pthread_mutex_t     is limited private;
 250    type pthread_cond_t      is limited private;
 251    type pthread_attr_t      is limited private;
 252    type pthread_mutexattr_t is limited private;
 253    type pthread_condattr_t  is limited private;
 254    type pthread_key_t       is private;
 255
 256    PTHREAD_CREATE_DETACHED : constant := 16#de#;
 257
 258    -----------
 259    -- Stack --
 260    -----------
 261
 262    Stack_Base_Available : constant Boolean := False;
 263    --  Indicates wether the stack base is available on this target.
 264
 265    function Get_Stack_Base (thread : pthread_t) return Address;
 266    pragma Inline (Get_Stack_Base);
 267    --  returns the stack base of the specified thread.
 268    --  Only call this function when Stack_Base_Available is True.
 269
 270    function Get_Page_Size return size_t;
 271    function Get_Page_Size return Address;
 272    pragma Import (C, Get_Page_Size, "getpagesize");
 273    --  returns the size of a page, or 0 if this is not relevant on this
 274    --  target
 275
 276    PROT_NONE  : constant := 0;
 277    PROT_READ  : constant := 1;
 278    PROT_WRITE : constant := 2;
 279    PROT_EXEC  : constant := 4;
 280    PROT_ALL   : constant := PROT_READ + PROT_WRITE + PROT_EXEC;
 281
 282    PROT_ON    : constant := PROT_READ;
 283    PROT_OFF   : constant := PROT_ALL;
 284
 285    function mprotect (addr : Address; len : size_t; prot : int) return int;
 286    pragma Import (C, mprotect);
 287
 288    ---------------------------------------
 289    -- Nonstandard Thread Initialization --
 290    ---------------------------------------
 291
 292    procedure pthread_init;
 293    pragma Inline (pthread_init);
 294    --  This is a dummy procedure to share some GNULLI files
 295
 296    -------------------------
 297    -- POSIX.1c  Section 3 --
 298    -------------------------
 299
 300    function sigwait
 301      (set : access sigset_t;
 302       sig : access Signal) return int;
 303    pragma Import (C, sigwait, "sigwait");
 304
 305    function pthread_kill
 306      (thread : pthread_t;
 307       sig    : Signal) return int;
 308    pragma Import (C, pthread_kill, "pthread_kill");
 309
 310    type sigset_t_ptr is access all sigset_t;
 311
 312    function pthread_sigmask
 313      (how  : int;
 314       set  : sigset_t_ptr;
 315       oset : sigset_t_ptr) return int;
 316    pragma Import (C, pthread_sigmask, "pthread_sigmask");
 317
 318    --------------------------
 319    -- POSIX.1c  Section 11 --
 320    --------------------------
 321
 322    function pthread_mutexattr_init
 323      (attr : access pthread_mutexattr_t) return int;
 324    pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
 325
 326    function pthread_mutexattr_destroy
 327      (attr : access pthread_mutexattr_t) return int;
 328    pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
 329
 330    function pthread_mutex_init
 331      (mutex : access pthread_mutex_t;
 332       attr  : access pthread_mutexattr_t) return int;
 333    pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
 334
 335    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 336    pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
 337
 338    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 339    pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
 340
 341    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 342    pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
 343
 344    function pthread_condattr_init
 345      (attr : access pthread_condattr_t) return int;
 346    pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
 347
 348    function pthread_condattr_destroy
 349      (attr : access pthread_condattr_t) return int;
 350    pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
 351
 352    function pthread_cond_init
 353      (cond : access pthread_cond_t;
 354       attr : access pthread_condattr_t) return int;
 355    pragma Import (C, pthread_cond_init, "pthread_cond_init");
 356
 357    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 358    pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
 359
 360    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 361    pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
 362
 363    function pthread_cond_wait
 364      (cond  : access pthread_cond_t;
 365       mutex : access pthread_mutex_t) return int;
 366    pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
 367
 368    function pthread_cond_timedwait
 369      (cond    : access pthread_cond_t;
 370       mutex   : access pthread_mutex_t;
 371       abstime : access timespec) return int;
 372    pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
 373
 374    Relative_Timed_Wait : constant Boolean := False;
 375    --  pthread_cond_timedwait requires an absolute delay time
 376
 377    ----------------------------
 378    --  POSIX.1c  Section 13  --
 379    ----------------------------
 380
 381    PTHREAD_PRIO_NONE    : constant := 16#100#;
 382    PTHREAD_PRIO_PROTECT : constant := 16#200#;
 383    PTHREAD_PRIO_INHERIT : constant := 16#400#;
 384
 385    function pthread_mutexattr_setprotocol
 386      (attr     : access pthread_mutexattr_t;
 387       protocol : int) return int;
 388    pragma Import (C, pthread_mutexattr_setprotocol);
 389
 390    function pthread_mutexattr_setprioceiling
 391      (attr     : access pthread_mutexattr_t;
 392       prioceiling : int) return int;
 393    pragma Import (C, pthread_mutexattr_setprioceiling);
 394
 395    type Array_7_Int is array (0 .. 6) of int;
 396    type struct_sched_param is record
 397       sched_priority : int;
 398       sched_reserved : Array_7_Int;
 399    end record;
 400
 401    function pthread_setschedparam
 402      (thread : pthread_t;
 403       policy : int;
 404       param  : access struct_sched_param)
 405      return int;
 406    pragma Import (C, pthread_setschedparam, "pthread_setschedparam");
 407
 408    function pthread_attr_setscope
 409      (attr            : access pthread_attr_t;
 410       contentionscope : int) return int;
 411    pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
 412
 413    function pthread_attr_setinheritsched
 414      (attr         : access pthread_attr_t;
 415       inheritsched : int) return int;
 416    pragma Import (C, pthread_attr_setinheritsched);
 417
 418    function pthread_attr_setschedpolicy
 419      (attr   : access pthread_attr_t;
 420       policy : int) return int;
 421    pragma Import (C, pthread_attr_setschedpolicy);
 422
 423    function sched_yield return int;
 424    pragma Import (C, sched_yield, "sched_yield");
 425
 426    ---------------------------
 427    -- P1003.1c - Section 16 --
 428    ---------------------------
 429
 430    function pthread_attr_init
 431      (attributes : access pthread_attr_t) return int;
 432    pragma Import (C, pthread_attr_init, "__pthread_attr_init_system");
 433
 434    function pthread_attr_destroy
 435      (attributes : access pthread_attr_t) return int;
 436    pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
 437
 438    function pthread_attr_setdetachstate
 439      (attr        : access pthread_attr_t;
 440       detachstate : int) return int;
 441    pragma Import (C, pthread_attr_setdetachstate);
 442
 443    function pthread_attr_setstacksize
 444      (attr      : access pthread_attr_t;
 445       stacksize : size_t) return int;
 446    pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize");
 447
 448    function pthread_create
 449      (thread        : access pthread_t;
 450       attributes    : access pthread_attr_t;
 451       start_routine : Thread_Body;
 452       arg           : System.Address) return int;
 453    pragma Import (C, pthread_create, "__pthread_create_system");
 454
 455    procedure pthread_exit (status : System.Address);
 456    pragma Import (C, pthread_exit, "pthread_exit");
 457
 458    function pthread_self return pthread_t;
 459    pragma Import (C, pthread_self, "pthread_self");
 460
 461    --------------------------
 462    -- POSIX.1c  Section 17 --
 463    --------------------------
 464
 465    function pthread_setspecific
 466      (key   : pthread_key_t;
 467       value : System.Address) return int;
 468    pragma Import (C, pthread_setspecific, "pthread_setspecific");
 469
 470    function pthread_getspecific (key : pthread_key_t) return System.Address;
 471    pragma Import (C, pthread_getspecific, "pthread_getspecific");
 472
 473    type destructor_pointer is access procedure (arg : System.Address);
 474
 475    function pthread_key_create
 476      (key        : access pthread_key_t;
 477       destructor : destructor_pointer) return int;
 478    pragma Import (C, pthread_key_create, "pthread_key_create");
 479
 480 private
 481
 482    type unsigned_int_array_8 is array (0 .. 7) of unsigned;
 483    type sigset_t is record
 484       sigset : unsigned_int_array_8;
 485    end record;
 486    pragma Convention (C_Pass_By_Copy, sigset_t);
 487
 488    type pid_t is new int;
 489
 490    type time_t is new long;
 491
 492    type timespec is record
 493       tv_sec  : time_t;
 494       tv_nsec : long;
 495    end record;
 496    pragma Convention (C, timespec);
 497
 498    type clockid_t is new int;
 499    CLOCK_REALTIME : constant clockid_t := 1;
 500
 501    type struct_timeval is record
 502       tv_sec  : time_t;
 503       tv_usec : time_t;
 504    end record;
 505    pragma Convention (C, struct_timeval);
 506
 507    type pthread_attr_t is new int;
 508    type pthread_condattr_t is new int;
 509    type pthread_mutexattr_t is new int;
 510    type pthread_t is new int;
 511
 512    type short_array is array (Natural range <>) of short;
 513    type int_array is array (Natural range <>) of int;
 514
 515    type pthread_mutex_t is record
 516       m_short  : short_array (0 .. 1);
 517       m_int    : int;
 518       m_int1   : int_array (0 .. 3);
 519       m_pad    : int;  --  needed for 32 bit ABI, but *not* for 64 bit
 520       m_ptr    : System.Address;
 521       m_int2   : int_array (0 .. 1);
 522       m_int3   : int_array (0 .. 3);
 523       m_short2 : short_array (0 .. 1);
 524       m_int4   : int_array (0 .. 4);
 525       m_int5   : int_array (0 .. 1);
 526    end record;
 527    pragma Convention (C, pthread_mutex_t);
 528
 529    type pthread_cond_t is record
 530       c_short : short_array (0 .. 1);
 531       c_int   : int;
 532       c_int1  : int_array (0 .. 3);
 533       m_pad   : int;  --  needed for 32 bit ABI, but *not* for 64 bit
 534       m_ptr   : System.Address;
 535       c_int2  : int_array (0 .. 1);
 536       c_int3  : int_array (0 .. 1);
 537       c_int4  : int_array (0 .. 1);
 538    end record;
 539    pragma Convention (C, pthread_cond_t);
 540
 541    type pthread_key_t is new int;
 542
 543 end System.OS_Interface;