gomp-20050608-branch/gcc/ada/s-osinte-hpux-dce.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 the HP-UX 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 --  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 with Unchecked_Conversion;
  45
  46 package System.OS_Interface is
  47    pragma Preelaborate;
  48
  49    pragma Linker_Options ("-lcma");
  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    ETIME     : constant := 52;
  73    ETIMEDOUT : constant := 238;
  74
  75    FUNC_ERR : constant := -1;
  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
 122    SIGADAABORT : constant := SIGABRT;
 123    --  Note: on other targets, we usually use SIGABRT, but on HP/UX, 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      (SIGBUS, SIGTRAP, SIGTTIN, SIGTTOU, SIGTSTP);
 130
 131    Reserved    : constant Signal_Set := (SIGKILL, SIGSTOP);
 132
 133    type sigset_t is private;
 134
 135    type isr_address is access procedure (sig : int);
 136
 137    function intr_attach (sig : int; handler : isr_address) return long;
 138
 139    Intr_Attach_Reset : constant Boolean := True;
 140    --  True if intr_attach is reset after an interrupt handler is called
 141
 142    function sigaddset (set : access sigset_t; sig : Signal) return int;
 143    pragma Import (C, sigaddset, "sigaddset");
 144
 145    function sigdelset (set : access sigset_t; sig : Signal) return int;
 146    pragma Import (C, sigdelset, "sigdelset");
 147
 148    function sigfillset (set : access sigset_t) return int;
 149    pragma Import (C, sigfillset, "sigfillset");
 150
 151    function sigismember (set : access sigset_t; sig : Signal) return int;
 152    pragma Import (C, sigismember, "sigismember");
 153
 154    function sigemptyset (set : access sigset_t) return int;
 155    pragma Import (C, sigemptyset, "sigemptyset");
 156
 157    type Signal_Handler is access procedure (signo : Signal);
 158
 159    type struct_sigaction is record
 160       sa_handler : System.Address;
 161       sa_mask    : sigset_t;
 162       sa_flags   : int;
 163    end record;
 164    pragma Convention (C, struct_sigaction);
 165    type struct_sigaction_ptr is access all struct_sigaction;
 166
 167    SA_RESTART  : constant  := 16#40#;
 168    SA_SIGINFO  : constant  := 16#10#;
 169
 170    SIG_BLOCK   : constant  := 0;
 171    SIG_UNBLOCK : constant  := 1;
 172    SIG_SETMASK : constant  := 2;
 173
 174    SIG_DFL : constant := 0;
 175    SIG_IGN : constant := 1;
 176    SIG_ERR : constant := -1;
 177
 178    function sigaction
 179      (sig  : Signal;
 180       act  : struct_sigaction_ptr;
 181       oact : struct_sigaction_ptr) return int;
 182    pragma Import (C, sigaction, "sigaction");
 183
 184    ----------
 185    -- Time --
 186    ----------
 187
 188    type timespec is private;
 189
 190    function nanosleep (rqtp, rmtp : access timespec) return int;
 191    pragma Import (C, nanosleep);
 192
 193    type clockid_t is private;
 194
 195    CLOCK_REALTIME : constant clockid_t;
 196
 197    function Clock_Gettime
 198      (Clock_Id : clockid_t; Tp : access timespec) return int;
 199    pragma Import (C, Clock_Gettime);
 200
 201    function To_Duration (TS : timespec) return Duration;
 202    pragma Inline (To_Duration);
 203
 204    function To_Timespec (D : Duration) return timespec;
 205    pragma Inline (To_Timespec);
 206
 207    type struct_timeval is private;
 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    -- Threads --
 237    -------------
 238
 239    type Thread_Body is access
 240      function (arg : System.Address) return System.Address;
 241
 242    function Thread_Body_Access is new
 243      Unchecked_Conversion (System.Address, Thread_Body);
 244
 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    -----------
 256    -- Stack --
 257    -----------
 258
 259    function Get_Stack_Base (thread : pthread_t) return Address;
 260    pragma Inline (Get_Stack_Base);
 261    --  This is a dummy procedure to share some GNULLI files
 262
 263    ---------------------------------------
 264    -- Nonstandard Thread Initialization --
 265    ---------------------------------------
 266
 267    procedure pthread_init;
 268    pragma Inline (pthread_init);
 269    --  This is a dummy procedure to share some GNULLI files
 270
 271    -------------------------
 272    -- POSIX.1c  Section 3 --
 273    -------------------------
 274
 275    function sigwait (set : access sigset_t) return int;
 276    pragma Import (C, sigwait, "cma_sigwait");
 277
 278    function sigwait
 279      (set : access sigset_t;
 280       sig : access Signal) return int;
 281    pragma Inline (sigwait);
 282    --  DCE_THREADS has a nonstandard sigwait
 283
 284    function pthread_kill
 285      (thread : pthread_t;
 286       sig    : Signal) return int;
 287    pragma Inline (pthread_kill);
 288    --  DCE_THREADS doesn't have pthread_kill
 289
 290    function pthread_sigmask
 291      (how  : int;
 292       set  : access sigset_t;
 293       oset : access sigset_t) return int;
 294    --  DCE THREADS does not have pthread_sigmask. Instead, it uses
 295    --  sigprocmask to do the signal handling when the thread library is
 296    --  sucked in.
 297    pragma Import (C, pthread_sigmask, "sigprocmask");
 298
 299    --------------------------
 300    -- POSIX.1c  Section 11 --
 301    --------------------------
 302
 303    function pthread_mutexattr_init
 304      (attr : access pthread_mutexattr_t) return int;
 305    --  DCE_THREADS has a nonstandard pthread_mutexattr_init.
 306
 307    function pthread_mutexattr_destroy
 308      (attr : access pthread_mutexattr_t) return int;
 309    --  DCE_THREADS has a nonstandard pthread_mutexattr_destroy
 310
 311    function pthread_mutex_init
 312      (mutex : access pthread_mutex_t;
 313       attr  : access pthread_mutexattr_t) return int;
 314    --  DCE_THREADS has a nonstandard pthread_mutex_init
 315
 316    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 317    --  DCE_THREADS has a nonstandard pthread_mutex_destroy
 318
 319    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 320    pragma Inline (pthread_mutex_lock);
 321    --  DCE_THREADS has nonstandard pthread_mutex_lock
 322
 323    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 324    pragma Inline (pthread_mutex_unlock);
 325    --  DCE_THREADS has nonstandard pthread_mutex_lock
 326
 327    function pthread_condattr_init
 328      (attr : access pthread_condattr_t) return int;
 329    --  DCE_THREADS has nonstandard pthread_condattr_init
 330
 331    function pthread_condattr_destroy
 332      (attr : access pthread_condattr_t) return int;
 333    --  DCE_THREADS has nonstandard pthread_condattr_destroy
 334
 335    function pthread_cond_init
 336      (cond : access pthread_cond_t;
 337       attr : access pthread_condattr_t) return int;
 338    --  DCE_THREADS has nonstandard pthread_cond_init
 339
 340    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 341    --  DCE_THREADS has nonstandard pthread_cond_destroy
 342
 343    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 344    pragma Inline (pthread_cond_signal);
 345    --  DCE_THREADS has nonstandard pthread_cond_signal
 346
 347    function pthread_cond_wait
 348      (cond  : access pthread_cond_t;
 349       mutex : access pthread_mutex_t) return int;
 350    pragma Inline (pthread_cond_wait);
 351    --  DCE_THREADS has a nonstandard pthread_cond_wait
 352
 353    function pthread_cond_timedwait
 354      (cond    : access pthread_cond_t;
 355       mutex   : access pthread_mutex_t;
 356       abstime : access timespec) return int;
 357    pragma Inline (pthread_cond_timedwait);
 358    --  DCE_THREADS has a nonstandard pthread_cond_timedwait
 359
 360    --------------------------
 361    -- POSIX.1c  Section 13 --
 362    --------------------------
 363
 364    type struct_sched_param is record
 365       sched_priority : int;  --  scheduling priority
 366    end record;
 367
 368    function pthread_setschedparam
 369      (thread : pthread_t;
 370       policy : int;
 371       param  : access struct_sched_param) return int;
 372    pragma Inline (pthread_setschedparam);
 373    --  DCE_THREADS has a nonstandard pthread_setschedparam
 374
 375    function sched_yield return int;
 376    pragma Inline (sched_yield);
 377    --  DCE_THREADS has a nonstandard sched_yield
 378
 379    ---------------------------
 380    -- P1003.1c - Section 16 --
 381    ---------------------------
 382
 383    function pthread_attr_init (attributes : access pthread_attr_t) return int;
 384    pragma Inline (pthread_attr_init);
 385    --  DCE_THREADS has a nonstandard pthread_attr_init
 386
 387    function pthread_attr_destroy
 388      (attributes : access pthread_attr_t) return int;
 389    pragma Inline (pthread_attr_destroy);
 390    --  DCE_THREADS has a nonstandard pthread_attr_destroy
 391
 392    function pthread_attr_setstacksize
 393      (attr      : access pthread_attr_t;
 394       stacksize : size_t) return int;
 395    pragma Inline (pthread_attr_setstacksize);
 396    --  DCE_THREADS has a nonstandard pthread_attr_setstacksize
 397
 398    function pthread_create
 399      (thread        : access pthread_t;
 400       attributes    : access pthread_attr_t;
 401       start_routine : Thread_Body;
 402       arg           : System.Address) return int;
 403    pragma Inline (pthread_create);
 404    --  DCE_THREADS has a nonstandard pthread_create
 405
 406    procedure pthread_detach (thread : access pthread_t);
 407    pragma Import (C, pthread_detach);
 408
 409    procedure pthread_exit (status : System.Address);
 410    pragma Import (C, pthread_exit, "pthread_exit");
 411
 412    function pthread_self return pthread_t;
 413    pragma Import (C, pthread_self, "pthread_self");
 414
 415    --------------------------
 416    -- POSIX.1c  Section 17 --
 417    --------------------------
 418
 419    function pthread_setspecific
 420      (key   : pthread_key_t;
 421       value : System.Address) return int;
 422    pragma Inline (pthread_setspecific);
 423    --  DCE_THREADS has a nonstandard pthread_setspecific
 424
 425    function pthread_getspecific (key : pthread_key_t) return System.Address;
 426    pragma Inline (pthread_getspecific);
 427    --  DCE_THREADS has a nonstandard pthread_getspecific
 428
 429    type destructor_pointer is access procedure (arg : System.Address);
 430
 431    function pthread_key_create
 432      (key        : access pthread_key_t;
 433       destructor : destructor_pointer) return int;
 434    pragma Inline (pthread_key_create);
 435    --  DCE_THREADS has a nonstandard pthread_key_create
 436
 437 private
 438
 439    type array_type_1 is array (Integer range 0 .. 7) of unsigned_long;
 440    type sigset_t is record
 441       X_X_sigbits : array_type_1;
 442    end record;
 443    pragma Convention (C, sigset_t);
 444
 445    type pid_t is new int;
 446
 447    type time_t is new long;
 448
 449    type timespec is record
 450       tv_sec  : time_t;
 451       tv_nsec : long;
 452    end record;
 453    pragma Convention (C, timespec);
 454
 455    type clockid_t is new int;
 456    CLOCK_REALTIME : constant clockid_t := 1;
 457
 458    type struct_timeval is record
 459       tv_sec  : time_t;
 460       tv_usec : time_t;
 461    end record;
 462    pragma Convention (C, struct_timeval);
 463
 464    type cma_t_address is new System.Address;
 465
 466    type cma_t_handle is record
 467       field1 : cma_t_address;
 468       field2 : Short_Integer;
 469       field3 : Short_Integer;
 470    end record;
 471    for cma_t_handle'Size use 64;
 472
 473    type pthread_attr_t is new cma_t_handle;
 474    pragma Convention (C_Pass_By_Copy, pthread_attr_t);
 475
 476    type pthread_condattr_t is new cma_t_handle;
 477    pragma Convention (C_Pass_By_Copy, pthread_condattr_t);
 478
 479    type pthread_mutexattr_t is new cma_t_handle;
 480    pragma Convention (C_Pass_By_Copy, pthread_mutexattr_t);
 481
 482    type pthread_t is new cma_t_handle;
 483    pragma Convention (C_Pass_By_Copy, pthread_t);
 484
 485    type pthread_mutex_t is new cma_t_handle;
 486    pragma Convention (C_Pass_By_Copy, pthread_mutex_t);
 487
 488    type pthread_cond_t is new cma_t_handle;
 489    pragma Convention (C_Pass_By_Copy, pthread_cond_t);
 490
 491    type pthread_key_t is new int;
 492
 493 end System.OS_Interface;