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) 1997-2001, Florida State University            --
  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. It is --
  30 -- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
  31 -- State University (http://www.gnat.com).                                  --
  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
 168    SIG_BLOCK   : constant  := 0;
 169    SIG_UNBLOCK : constant  := 1;
 170    SIG_SETMASK : constant  := 2;
 171
 172    SIG_DFL : constant := 0;
 173    SIG_IGN : constant := 1;
 174    SIG_ERR : constant := -1;
 175
 176    function sigaction
 177      (sig  : Signal;
 178       act  : struct_sigaction_ptr;
 179       oact : struct_sigaction_ptr) return int;
 180    pragma Import (C, sigaction, "sigaction");
 181
 182    ----------
 183    -- Time --
 184    ----------
 185
 186    type timespec is private;
 187
 188    function nanosleep (rqtp, rmtp : access timespec) return int;
 189    pragma Import (C, nanosleep);
 190
 191    type clockid_t is private;
 192
 193    CLOCK_REALTIME : constant clockid_t;
 194
 195    function Clock_Gettime
 196      (Clock_Id : clockid_t; Tp : access timespec) return int;
 197    pragma Import (C, Clock_Gettime);
 198
 199    function To_Duration (TS : timespec) return Duration;
 200    pragma Inline (To_Duration);
 201
 202    function To_Timespec (D : Duration) return timespec;
 203    pragma Inline (To_Timespec);
 204
 205    type struct_timeval is private;
 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    -- Threads --
 235    -------------
 236
 237    type Thread_Body is access
 238      function (arg : System.Address) return System.Address;
 239    type pthread_t           is private;
 240    subtype Thread_Id        is pthread_t;
 241
 242    type pthread_mutex_t     is limited private;
 243    type pthread_cond_t      is limited private;
 244    type pthread_attr_t      is limited private;
 245    type pthread_mutexattr_t is limited private;
 246    type pthread_condattr_t  is limited private;
 247    type pthread_key_t       is private;
 248
 249    -----------
 250    -- Stack --
 251    -----------
 252
 253    function Get_Stack_Base (thread : pthread_t) return Address;
 254    pragma Inline (Get_Stack_Base);
 255    --  This is a dummy procedure to share some GNULLI files
 256
 257    ---------------------------------------
 258    -- Nonstandard Thread Initialization --
 259    ---------------------------------------
 260
 261    procedure pthread_init;
 262    pragma Inline (pthread_init);
 263    --  This is a dummy procedure to share some GNULLI files
 264
 265    -------------------------
 266    -- POSIX.1c  Section 3 --
 267    -------------------------
 268
 269    function sigwait (set : access sigset_t) return int;
 270    pragma Import (C, sigwait, "cma_sigwait");
 271
 272    function sigwait
 273      (set : access sigset_t;
 274       sig : access Signal) return int;
 275    pragma Inline (sigwait);
 276    --  DCE_THREADS has a nonstandard sigwait
 277
 278    function pthread_kill
 279      (thread : pthread_t;
 280       sig    : Signal) return int;
 281    pragma Inline (pthread_kill);
 282    --  DCE_THREADS doesn't have pthread_kill
 283
 284    type sigset_t_ptr is access all sigset_t;
 285
 286    function pthread_sigmask
 287      (how  : int;
 288       set  : sigset_t_ptr;
 289       oset : sigset_t_ptr) return int;
 290    --  DCE THREADS does not have pthread_sigmask. Instead, it uses
 291    --  sigprocmask to do the signal handling when the thread library is
 292    --  sucked in.
 293    pragma Import (C, pthread_sigmask, "sigprocmask");
 294
 295    --------------------------
 296    -- POSIX.1c  Section 11 --
 297    --------------------------
 298
 299    function pthread_mutexattr_init
 300      (attr : access pthread_mutexattr_t) return int;
 301    --  DCE_THREADS has a nonstandard pthread_mutexattr_init.
 302
 303    function pthread_mutexattr_destroy
 304      (attr : access pthread_mutexattr_t) return int;
 305    --  DCE_THREADS has a nonstandard pthread_mutexattr_destroy
 306
 307    function pthread_mutex_init
 308      (mutex : access pthread_mutex_t;
 309       attr  : access pthread_mutexattr_t) return int;
 310    --  DCE_THREADS has a nonstandard pthread_mutex_init
 311
 312    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 313    --  DCE_THREADS has a nonstandard pthread_mutex_destroy
 314
 315    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 316    pragma Inline (pthread_mutex_lock);
 317    --  DCE_THREADS has nonstandard pthread_mutex_lock
 318
 319    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 320    pragma Inline (pthread_mutex_unlock);
 321    --  DCE_THREADS has nonstandard pthread_mutex_lock
 322
 323    function pthread_condattr_init
 324      (attr : access pthread_condattr_t) return int;
 325    --  DCE_THREADS has nonstandard pthread_condattr_init
 326
 327    function pthread_condattr_destroy
 328      (attr : access pthread_condattr_t) return int;
 329    --  DCE_THREADS has nonstandard pthread_condattr_destroy
 330
 331    function pthread_cond_init
 332      (cond : access pthread_cond_t;
 333       attr : access pthread_condattr_t) return int;
 334    --  DCE_THREADS has nonstandard pthread_cond_init
 335
 336    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 337    --  DCE_THREADS has nonstandard pthread_cond_destroy
 338
 339    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 340    pragma Inline (pthread_cond_signal);
 341    --  DCE_THREADS has nonstandard pthread_cond_signal
 342
 343    function pthread_cond_wait
 344      (cond  : access pthread_cond_t;
 345       mutex : access pthread_mutex_t) return int;
 346    pragma Inline (pthread_cond_wait);
 347    --  DCE_THREADS has a nonstandard pthread_cond_wait
 348
 349    function pthread_cond_timedwait
 350      (cond    : access pthread_cond_t;
 351       mutex   : access pthread_mutex_t;
 352       abstime : access timespec) return int;
 353    pragma Inline (pthread_cond_timedwait);
 354    --  DCE_THREADS has a nonstandard pthread_cond_timedwait
 355
 356    --------------------------
 357    -- POSIX.1c  Section 13 --
 358    --------------------------
 359
 360    type struct_sched_param is record
 361       sched_priority : int;  --  scheduling priority
 362    end record;
 363
 364    function pthread_setschedparam
 365      (thread : pthread_t;
 366       policy : int;
 367       param  : access struct_sched_param) return int;
 368    pragma Inline (pthread_setschedparam);
 369    --  DCE_THREADS has a nonstandard pthread_setschedparam
 370
 371    function sched_yield return int;
 372    pragma Inline (sched_yield);
 373    --  DCE_THREADS has a nonstandard sched_yield
 374
 375    ---------------------------
 376    -- P1003.1c - Section 16 --
 377    ---------------------------
 378
 379    function pthread_attr_init (attributes : access pthread_attr_t) return int;
 380    pragma Inline (pthread_attr_init);
 381    --  DCE_THREADS has a nonstandard pthread_attr_init
 382
 383    function pthread_attr_destroy
 384      (attributes : access pthread_attr_t) return int;
 385    pragma Inline (pthread_attr_destroy);
 386    --  DCE_THREADS has a nonstandard pthread_attr_destroy
 387
 388    function pthread_attr_setstacksize
 389      (attr      : access pthread_attr_t;
 390       stacksize : size_t) return int;
 391    pragma Inline (pthread_attr_setstacksize);
 392    --  DCE_THREADS has a nonstandard pthread_attr_setstacksize
 393
 394    function pthread_create
 395      (thread        : access pthread_t;
 396       attributes    : access pthread_attr_t;
 397       start_routine : Thread_Body;
 398       arg           : System.Address) return int;
 399    pragma Inline (pthread_create);
 400    --  DCE_THREADS has a nonstandard pthread_create
 401
 402    procedure pthread_detach (thread : access pthread_t);
 403    pragma Import (C, pthread_detach);
 404
 405    procedure pthread_exit (status : System.Address);
 406    pragma Import (C, pthread_exit, "pthread_exit");
 407
 408    function pthread_self return pthread_t;
 409    pragma Import (C, pthread_self, "pthread_self");
 410
 411    --------------------------
 412    -- POSIX.1c  Section 17 --
 413    --------------------------
 414
 415    function pthread_setspecific
 416      (key   : pthread_key_t;
 417       value : System.Address) return int;
 418    pragma Inline (pthread_setspecific);
 419    --  DCE_THREADS has a nonstandard pthread_setspecific
 420
 421    function pthread_getspecific (key : pthread_key_t) return System.Address;
 422    pragma Inline (pthread_getspecific);
 423    --  DCE_THREADS has a nonstandard pthread_getspecific
 424
 425    type destructor_pointer is access procedure (arg : System.Address);
 426
 427    function pthread_key_create
 428      (key        : access pthread_key_t;
 429       destructor : destructor_pointer) return int;
 430    pragma Inline (pthread_key_create);
 431    --  DCE_THREADS has a nonstandard pthread_key_create
 432
 433 private
 434
 435    type array_type_1 is array (Integer range 0 .. 7) of unsigned_long;
 436    type sigset_t is record
 437       X_X_sigbits : array_type_1;
 438    end record;
 439    pragma Convention (C, sigset_t);
 440
 441    type pid_t is new int;
 442
 443    type time_t is new long;
 444
 445    type timespec is record
 446       tv_sec  : time_t;
 447       tv_nsec : long;
 448    end record;
 449    pragma Convention (C, timespec);
 450
 451    type clockid_t is new int;
 452    CLOCK_REALTIME : constant clockid_t := 1;
 453
 454    type struct_timeval is record
 455       tv_sec  : time_t;
 456       tv_usec : time_t;
 457    end record;
 458    pragma Convention (C, struct_timeval);
 459
 460    type cma_t_address is new System.Address;
 461
 462    type cma_t_handle is record
 463       field1 : cma_t_address;
 464       field2 : Short_Integer;
 465       field3 : Short_Integer;
 466    end record;
 467    for cma_t_handle'Size use 64;
 468
 469    type pthread_attr_t is new cma_t_handle;
 470    pragma Convention (C_Pass_By_Copy, pthread_attr_t);
 471
 472    type pthread_condattr_t is new cma_t_handle;
 473    pragma Convention (C_Pass_By_Copy, pthread_condattr_t);
 474
 475    type pthread_mutexattr_t is new cma_t_handle;
 476    pragma Convention (C_Pass_By_Copy, pthread_mutexattr_t);
 477
 478    type pthread_t is new cma_t_handle;
 479    pragma Convention (C_Pass_By_Copy, pthread_t);
 480
 481    type pthread_mutex_t is new cma_t_handle;
 482    pragma Convention (C_Pass_By_Copy, pthread_mutex_t);
 483
 484    type pthread_cond_t is new cma_t_handle;
 485    pragma Convention (C_Pass_By_Copy, pthread_cond_t);
 486
 487    type pthread_key_t is new int;
 488
 489 end System.OS_Interface;