gcc/ada/5hosinte.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) 1991-1994, Florida State University            --
  10 --             Copyright (C) 1995-2003, Ada Core Technologies               --
  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.       --
  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
  41 --  or remove the pragma Elaborate_Body.
  42 --  It is designed to be a bottom-level (leaf) package.
  43
  44 with Interfaces.C;
  45 package System.OS_Interface is
  46    pragma Preelaborate;
  47
  48    pragma Linker_Options ("-lcma");
  49
  50    subtype int            is Interfaces.C.int;
  51    subtype short          is Interfaces.C.short;
  52    subtype long           is Interfaces.C.long;
  53    subtype unsigned       is Interfaces.C.unsigned;
  54    subtype unsigned_short is Interfaces.C.unsigned_short;
  55    subtype unsigned_long  is Interfaces.C.unsigned_long;
  56    subtype unsigned_char  is Interfaces.C.unsigned_char;
  57    subtype plain_char     is Interfaces.C.plain_char;
  58    subtype size_t         is Interfaces.C.size_t;
  59
  60    -----------
  61    -- Errno --
  62    -----------
  63
  64    function errno return int;
  65    pragma Import (C, errno, "__get_errno");
  66
  67    EAGAIN    : constant := 11;
  68    EINTR     : constant := 4;
  69    EINVAL    : constant := 22;
  70    ENOMEM    : constant := 12;
  71    ETIME     : constant := 52;
  72    ETIMEDOUT : constant := 238;
  73
  74    FUNC_ERR : constant := -1;
  75
  76    -------------
  77    -- Signals --
  78    -------------
  79
  80    Max_Interrupt : constant := 44;
  81    type Signal is new int range 0 .. Max_Interrupt;
  82    for Signal'Size use int'Size;
  83
  84    SIGHUP     : constant := 1; --  hangup
  85    SIGINT     : constant := 2; --  interrupt (rubout)
  86    SIGQUIT    : constant := 3; --  quit (ASCD FS)
  87    SIGILL     : constant := 4; --  illegal instruction (not reset)
  88    SIGTRAP    : constant := 5; --  trace trap (not reset)
  89    SIGIOT     : constant := 6; --  IOT instruction
  90    SIGABRT    : constant := 6; --  used by abort, replace SIGIOT in the  future
  91    SIGEMT     : constant := 7; --  EMT instruction
  92    SIGFPE     : constant := 8; --  floating point exception
  93    SIGKILL    : constant := 9; --  kill (cannot be caught or ignored)
  94    SIGBUS     : constant := 10; --  bus error
  95    SIGSEGV    : constant := 11; --  segmentation violation
  96    SIGSYS     : constant := 12; --  bad argument to system call
  97    SIGPIPE    : constant := 13; --  write on a pipe with no one to read it
  98    SIGALRM    : constant := 14; --  alarm clock
  99    SIGTERM    : constant := 15; --  software termination signal from kill
 100    SIGUSR1    : constant := 16; --  user defined signal 1
 101    SIGUSR2    : constant := 17; --  user defined signal 2
 102    SIGCLD     : constant := 18; --  alias for SIGCHLD
 103    SIGCHLD    : constant := 18; --  child status change
 104    SIGPWR     : constant := 19; --  power-fail restart
 105    SIGVTALRM  : constant := 20; --  virtual timer alarm
 106    SIGPROF    : constant := 21; --  profiling timer alarm
 107    SIGIO      : constant := 22; --  asynchronous I/O
 108    SIGPOLL    : constant := 22; --  pollable event occurred
 109    SIGWINCH   : constant := 23; --  window size change
 110    SIGSTOP    : constant := 24; --  stop (cannot be caught or ignored)
 111    SIGTSTP    : constant := 25; --  user stop requested from tty
 112    SIGCONT    : constant := 26; --  stopped process has been continued
 113    SIGTTIN    : constant := 27; --  background tty read attempted
 114    SIGTTOU    : constant := 28; --  background tty write attempted
 115    SIGURG     : constant := 29; --  urgent condition on IO channel
 116    SIGLOST    : constant := 30; --  remote lock lost  (NFS)
 117    SIGDIL     : constant := 32; --  DIL signal
 118    SIGXCPU    : constant := 33; --  CPU time limit exceeded (setrlimit)
 119    SIGXFSZ    : constant := 34; --  file size limit exceeded (setrlimit)
 120
 121    SIGADAABORT : constant := SIGABRT;
 122    --  Note: on other targets, we usually use SIGABRT, but on HP/UX, 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      (SIGBUS, SIGTRAP, SIGTTIN, SIGTTOU, SIGTSTP);
 129
 130    Reserved    : constant Signal_Set := (SIGKILL, SIGSTOP);
 131
 132    type sigset_t is private;
 133
 134    type isr_address is access procedure (sig : int);
 135
 136    function intr_attach (sig : int; handler : isr_address) return long;
 137
 138    Intr_Attach_Reset : constant Boolean := True;
 139    --  True if intr_attach is reset after an interrupt handler is called
 140
 141    function sigaddset (set : access sigset_t; sig : Signal) return int;
 142    pragma Import (C, sigaddset, "sigaddset");
 143
 144    function sigdelset (set : access sigset_t; sig : Signal) return int;
 145    pragma Import (C, sigdelset, "sigdelset");
 146
 147    function sigfillset (set : access sigset_t) return int;
 148    pragma Import (C, sigfillset, "sigfillset");
 149
 150    function sigismember (set : access sigset_t; sig : Signal) return int;
 151    pragma Import (C, sigismember, "sigismember");
 152
 153    function sigemptyset (set : access sigset_t) return int;
 154    pragma Import (C, sigemptyset, "sigemptyset");
 155
 156    type Signal_Handler is access procedure (signo : Signal);
 157
 158    type struct_sigaction is record
 159       sa_handler : System.Address;
 160       sa_mask    : sigset_t;
 161       sa_flags   : int;
 162    end record;
 163    pragma Convention (C, struct_sigaction);
 164    type struct_sigaction_ptr is access all struct_sigaction;
 165
 166    SA_RESTART  : constant  := 16#40#;
 167    SA_SIGINFO  : constant  := 16#10#;
 168
 169    SIG_BLOCK   : constant  := 0;
 170    SIG_UNBLOCK : constant  := 1;
 171    SIG_SETMASK : constant  := 2;
 172
 173    SIG_DFL : constant := 0;
 174    SIG_IGN : constant := 1;
 175    SIG_ERR : constant := -1;
 176
 177    function sigaction
 178      (sig  : Signal;
 179       act  : struct_sigaction_ptr;
 180       oact : struct_sigaction_ptr) return int;
 181    pragma Import (C, sigaction, "sigaction");
 182
 183    ----------
 184    -- Time --
 185    ----------
 186
 187    type timespec is private;
 188
 189    function nanosleep (rqtp, rmtp : access timespec) return int;
 190    pragma Import (C, nanosleep);
 191
 192    type clockid_t is private;
 193
 194    CLOCK_REALTIME : constant clockid_t;
 195
 196    function Clock_Gettime
 197      (Clock_Id : clockid_t; Tp : access timespec) return int;
 198    pragma Import (C, Clock_Gettime);
 199
 200    function To_Duration (TS : timespec) return Duration;
 201    pragma Inline (To_Duration);
 202
 203    function To_Timespec (D : Duration) return timespec;
 204    pragma Inline (To_Timespec);
 205
 206    type struct_timeval is private;
 207
 208    function To_Duration (TV : struct_timeval) return Duration;
 209    pragma Inline (To_Duration);
 210
 211    function To_Timeval (D : Duration) return struct_timeval;
 212    pragma Inline (To_Timeval);
 213
 214    -------------------------
 215    -- Priority Scheduling --
 216    -------------------------
 217
 218    SCHED_FIFO  : constant := 0;
 219    SCHED_RR    : constant := 1;
 220    SCHED_OTHER : constant := 2;
 221
 222    -------------
 223    -- Process --
 224    -------------
 225
 226    type pid_t is private;
 227
 228    function kill (pid : pid_t; sig : Signal) return int;
 229    pragma Import (C, kill, "kill");
 230
 231    function getpid return pid_t;
 232    pragma Import (C, getpid, "getpid");
 233
 234    -------------
 235    -- Threads --
 236    -------------
 237
 238    type Thread_Body is access
 239      function (arg : System.Address) return System.Address;
 240    type pthread_t           is private;
 241    subtype Thread_Id        is pthread_t;
 242
 243    type pthread_mutex_t     is limited private;
 244    type pthread_cond_t      is limited private;
 245    type pthread_attr_t      is limited private;
 246    type pthread_mutexattr_t is limited private;
 247    type pthread_condattr_t  is limited private;
 248    type pthread_key_t       is private;
 249
 250    -----------
 251    -- Stack --
 252    -----------
 253
 254    function Get_Stack_Base (thread : pthread_t) return Address;
 255    pragma Inline (Get_Stack_Base);
 256    --  This is a dummy procedure to share some GNULLI files
 257
 258    ---------------------------------------
 259    -- Nonstandard Thread Initialization --
 260    ---------------------------------------
 261
 262    procedure pthread_init;
 263    pragma Inline (pthread_init);
 264    --  This is a dummy procedure to share some GNULLI files
 265
 266    -------------------------
 267    -- POSIX.1c  Section 3 --
 268    -------------------------
 269
 270    function sigwait (set : access sigset_t) return int;
 271    pragma Import (C, sigwait, "cma_sigwait");
 272
 273    function sigwait
 274      (set : access sigset_t;
 275       sig : access Signal) return int;
 276    pragma Inline (sigwait);
 277    --  DCE_THREADS has a nonstandard sigwait
 278
 279    function pthread_kill
 280      (thread : pthread_t;
 281       sig    : Signal) return int;
 282    pragma Inline (pthread_kill);
 283    --  DCE_THREADS doesn't have pthread_kill
 284
 285    type sigset_t_ptr is access all sigset_t;
 286
 287    function pthread_sigmask
 288      (how  : int;
 289       set  : sigset_t_ptr;
 290       oset : sigset_t_ptr) return int;
 291    --  DCE THREADS does not have pthread_sigmask. Instead, it uses
 292    --  sigprocmask to do the signal handling when the thread library is
 293    --  sucked in.
 294    pragma Import (C, pthread_sigmask, "sigprocmask");
 295
 296    --------------------------
 297    -- POSIX.1c  Section 11 --
 298    --------------------------
 299
 300    function pthread_mutexattr_init
 301      (attr : access pthread_mutexattr_t) return int;
 302    --  DCE_THREADS has a nonstandard pthread_mutexattr_init.
 303
 304    function pthread_mutexattr_destroy
 305      (attr : access pthread_mutexattr_t) return int;
 306    --  DCE_THREADS has a nonstandard pthread_mutexattr_destroy
 307
 308    function pthread_mutex_init
 309      (mutex : access pthread_mutex_t;
 310       attr  : access pthread_mutexattr_t) return int;
 311    --  DCE_THREADS has a nonstandard pthread_mutex_init
 312
 313    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 314    --  DCE_THREADS has a nonstandard pthread_mutex_destroy
 315
 316    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 317    pragma Inline (pthread_mutex_lock);
 318    --  DCE_THREADS has nonstandard pthread_mutex_lock
 319
 320    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 321    pragma Inline (pthread_mutex_unlock);
 322    --  DCE_THREADS has nonstandard pthread_mutex_lock
 323
 324    function pthread_condattr_init
 325      (attr : access pthread_condattr_t) return int;
 326    --  DCE_THREADS has nonstandard pthread_condattr_init
 327
 328    function pthread_condattr_destroy
 329      (attr : access pthread_condattr_t) return int;
 330    --  DCE_THREADS has nonstandard pthread_condattr_destroy
 331
 332    function pthread_cond_init
 333      (cond : access pthread_cond_t;
 334       attr : access pthread_condattr_t) return int;
 335    --  DCE_THREADS has nonstandard pthread_cond_init
 336
 337    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 338    --  DCE_THREADS has nonstandard pthread_cond_destroy
 339
 340    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 341    pragma Inline (pthread_cond_signal);
 342    --  DCE_THREADS has nonstandard pthread_cond_signal
 343
 344    function pthread_cond_wait
 345      (cond  : access pthread_cond_t;
 346       mutex : access pthread_mutex_t) return int;
 347    pragma Inline (pthread_cond_wait);
 348    --  DCE_THREADS has a nonstandard pthread_cond_wait
 349
 350    function pthread_cond_timedwait
 351      (cond    : access pthread_cond_t;
 352       mutex   : access pthread_mutex_t;
 353       abstime : access timespec) return int;
 354    pragma Inline (pthread_cond_timedwait);
 355    --  DCE_THREADS has a nonstandard pthread_cond_timedwait
 356
 357    --------------------------
 358    -- POSIX.1c  Section 13 --
 359    --------------------------
 360
 361    type struct_sched_param is record
 362       sched_priority : int;  --  scheduling priority
 363    end record;
 364
 365    function pthread_setschedparam
 366      (thread : pthread_t;
 367       policy : int;
 368       param  : access struct_sched_param) return int;
 369    pragma Inline (pthread_setschedparam);
 370    --  DCE_THREADS has a nonstandard pthread_setschedparam
 371
 372    function sched_yield return int;
 373    pragma Inline (sched_yield);
 374    --  DCE_THREADS has a nonstandard sched_yield
 375
 376    ---------------------------
 377    -- P1003.1c - Section 16 --
 378    ---------------------------
 379
 380    function pthread_attr_init (attributes : access pthread_attr_t) return int;
 381    pragma Inline (pthread_attr_init);
 382    --  DCE_THREADS has a nonstandard pthread_attr_init
 383
 384    function pthread_attr_destroy
 385      (attributes : access pthread_attr_t) return int;
 386    pragma Inline (pthread_attr_destroy);
 387    --  DCE_THREADS has a nonstandard pthread_attr_destroy
 388
 389    function pthread_attr_setstacksize
 390      (attr      : access pthread_attr_t;
 391       stacksize : size_t) return int;
 392    pragma Inline (pthread_attr_setstacksize);
 393    --  DCE_THREADS has a nonstandard pthread_attr_setstacksize
 394
 395    function pthread_create
 396      (thread        : access pthread_t;
 397       attributes    : access pthread_attr_t;
 398       start_routine : Thread_Body;
 399       arg           : System.Address) return int;
 400    pragma Inline (pthread_create);
 401    --  DCE_THREADS has a nonstandard pthread_create
 402
 403    procedure pthread_detach (thread : access pthread_t);
 404    pragma Import (C, pthread_detach);
 405
 406    procedure pthread_exit (status : System.Address);
 407    pragma Import (C, pthread_exit, "pthread_exit");
 408
 409    function pthread_self return pthread_t;
 410    pragma Import (C, pthread_self, "pthread_self");
 411
 412    --------------------------
 413    -- POSIX.1c  Section 17 --
 414    --------------------------
 415
 416    function pthread_setspecific
 417      (key   : pthread_key_t;
 418       value : System.Address) return int;
 419    pragma Inline (pthread_setspecific);
 420    --  DCE_THREADS has a nonstandard pthread_setspecific
 421
 422    function pthread_getspecific (key : pthread_key_t) return System.Address;
 423    pragma Inline (pthread_getspecific);
 424    --  DCE_THREADS has a nonstandard pthread_getspecific
 425
 426    type destructor_pointer is access procedure (arg : System.Address);
 427
 428    function pthread_key_create
 429      (key        : access pthread_key_t;
 430       destructor : destructor_pointer) return int;
 431    pragma Inline (pthread_key_create);
 432    --  DCE_THREADS has a nonstandard pthread_key_create
 433
 434 private
 435
 436    type array_type_1 is array (Integer range 0 .. 7) of unsigned_long;
 437    type sigset_t is record
 438       X_X_sigbits : array_type_1;
 439    end record;
 440    pragma Convention (C, sigset_t);
 441
 442    type pid_t is new int;
 443
 444    type time_t is new long;
 445
 446    type timespec is record
 447       tv_sec  : time_t;
 448       tv_nsec : long;
 449    end record;
 450    pragma Convention (C, timespec);
 451
 452    type clockid_t is new int;
 453    CLOCK_REALTIME : constant clockid_t := 1;
 454
 455    type struct_timeval is record
 456       tv_sec  : time_t;
 457       tv_usec : time_t;
 458    end record;
 459    pragma Convention (C, struct_timeval);
 460
 461    type cma_t_address is new System.Address;
 462
 463    type cma_t_handle is record
 464       field1 : cma_t_address;
 465       field2 : Short_Integer;
 466       field3 : Short_Integer;
 467    end record;
 468    for cma_t_handle'Size use 64;
 469
 470    type pthread_attr_t is new cma_t_handle;
 471    pragma Convention (C_Pass_By_Copy, pthread_attr_t);
 472
 473    type pthread_condattr_t is new cma_t_handle;
 474    pragma Convention (C_Pass_By_Copy, pthread_condattr_t);
 475
 476    type pthread_mutexattr_t is new cma_t_handle;
 477    pragma Convention (C_Pass_By_Copy, pthread_mutexattr_t);
 478
 479    type pthread_t is new cma_t_handle;
 480    pragma Convention (C_Pass_By_Copy, pthread_t);
 481
 482    type pthread_mutex_t is new cma_t_handle;
 483    pragma Convention (C_Pass_By_Copy, pthread_mutex_t);
 484
 485    type pthread_cond_t is new cma_t_handle;
 486    pragma Convention (C_Pass_By_Copy, pthread_cond_t);
 487
 488    type pthread_key_t is new int;
 489
 490 end System.OS_Interface;