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 --                             $Revision: 1.28 $
  10 --                                                                          --
  11 --             Copyright (C) 1997-2001, Florida State University            --
  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 the HP-UX 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 ("-lcma");
  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    ETIME     : constant := 52;
  74    ETIMEDOUT : constant := 238;
  75
  76    FUNC_ERR : constant := -1;
  77
  78    -------------
  79    -- Signals --
  80    -------------
  81
  82    Max_Interrupt : constant := 44;
  83    type Signal is new int range 0 .. Max_Interrupt;
  84    for Signal'Size use int'Size;
  85
  86    SIGHUP     : constant := 1; --  hangup
  87    SIGINT     : constant := 2; --  interrupt (rubout)
  88    SIGQUIT    : constant := 3; --  quit (ASCD FS)
  89    SIGILL     : constant := 4; --  illegal instruction (not reset)
  90    SIGTRAP    : constant := 5; --  trace trap (not reset)
  91    SIGIOT     : constant := 6; --  IOT instruction
  92    SIGABRT    : constant := 6; --  used by abort, replace SIGIOT in the  future
  93    SIGEMT     : constant := 7; --  EMT instruction
  94    SIGFPE     : constant := 8; --  floating point exception
  95    SIGKILL    : constant := 9; --  kill (cannot be caught or ignored)
  96    SIGBUS     : constant := 10; --  bus error
  97    SIGSEGV    : constant := 11; --  segmentation violation
  98    SIGSYS     : constant := 12; --  bad argument to system call
  99    SIGPIPE    : constant := 13; --  write on a pipe with no one to read it
 100    SIGALRM    : constant := 14; --  alarm clock
 101    SIGTERM    : constant := 15; --  software termination signal from kill
 102    SIGUSR1    : constant := 16; --  user defined signal 1
 103    SIGUSR2    : constant := 17; --  user defined signal 2
 104    SIGCLD     : constant := 18; --  alias for SIGCHLD
 105    SIGCHLD    : constant := 18; --  child status change
 106    SIGPWR     : constant := 19; --  power-fail restart
 107    SIGVTALRM  : constant := 20; --  virtual timer alarm
 108    SIGPROF    : constant := 21; --  profiling timer alarm
 109    SIGIO      : constant := 22; --  asynchronous I/O
 110    SIGPOLL    : constant := 22; --  pollable event occurred
 111    SIGWINCH   : constant := 23; --  window size change
 112    SIGSTOP    : constant := 24; --  stop (cannot be caught or ignored)
 113    SIGTSTP    : constant := 25; --  user stop requested from tty
 114    SIGCONT    : constant := 26; --  stopped process has been continued
 115    SIGTTIN    : constant := 27; --  background tty read attempted
 116    SIGTTOU    : constant := 28; --  background tty write attempted
 117    SIGURG     : constant := 29; --  urgent condition on IO channel
 118    SIGLOST    : constant := 30; --  remote lock lost  (NFS)
 119    SIGDIL     : constant := 32; --  DIL signal
 120    SIGXCPU    : constant := 33; --  CPU time limit exceeded (setrlimit)
 121    SIGXFSZ    : constant := 34; --  file size limit exceeded (setrlimit)
 122
 123    SIGADAABORT : constant := SIGABRT;
 124    --  Note: on other targets, we usually use SIGABRT, but on HP/UX, it
 125    --  appears that SIGABRT can't be used in sigwait(), so we use SIGTERM.
 126
 127    type Signal_Set is array (Natural range <>) of Signal;
 128
 129    Unmasked    : constant Signal_Set :=
 130      (SIGBUS, SIGTRAP, SIGTTIN, SIGTTOU, SIGTSTP);
 131
 132    Reserved    : constant Signal_Set := (SIGKILL, SIGSTOP);
 133
 134    type sigset_t is private;
 135
 136    type isr_address is access procedure (sig : int);
 137
 138    function intr_attach (sig : int; handler : isr_address) return long;
 139
 140    Intr_Attach_Reset : constant Boolean := True;
 141    --  True if intr_attach is reset after an interrupt handler is called
 142
 143    function sigaddset (set : access sigset_t; sig : Signal) return int;
 144    pragma Import (C, sigaddset, "sigaddset");
 145
 146    function sigdelset (set : access sigset_t; sig : Signal) return int;
 147    pragma Import (C, sigdelset, "sigdelset");
 148
 149    function sigfillset (set : access sigset_t) return int;
 150    pragma Import (C, sigfillset, "sigfillset");
 151
 152    function sigismember (set : access sigset_t; sig : Signal) return int;
 153    pragma Import (C, sigismember, "sigismember");
 154
 155    function sigemptyset (set : access sigset_t) return int;
 156    pragma Import (C, sigemptyset, "sigemptyset");
 157
 158    type Signal_Handler is access procedure (signo : Signal);
 159
 160    type struct_sigaction is record
 161       sa_handler : System.Address;
 162       sa_mask    : sigset_t;
 163       sa_flags   : int;
 164    end record;
 165    pragma Convention (C, struct_sigaction);
 166    type struct_sigaction_ptr is access all struct_sigaction;
 167
 168    SA_RESTART  : constant  := 16#40#;
 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    type pthread_t           is private;
 242    subtype Thread_Id        is pthread_t;
 243
 244    type pthread_mutex_t     is limited private;
 245    type pthread_cond_t      is limited private;
 246    type pthread_attr_t      is limited private;
 247    type pthread_mutexattr_t is limited private;
 248    type pthread_condattr_t  is limited private;
 249    type pthread_key_t       is private;
 250
 251    -----------
 252    -- Stack --
 253    -----------
 254
 255    function Get_Stack_Base (thread : pthread_t) return Address;
 256    pragma Inline (Get_Stack_Base);
 257    --  This is a dummy procedure to share some GNULLI files
 258
 259    ---------------------------------------
 260    -- Nonstandard Thread Initialization --
 261    ---------------------------------------
 262
 263    procedure pthread_init;
 264    pragma Inline (pthread_init);
 265    --  This is a dummy procedure to share some GNULLI files
 266
 267    -------------------------
 268    -- POSIX.1c  Section 3 --
 269    -------------------------
 270
 271    function sigwait (set : access sigset_t) return int;
 272    pragma Import (C, sigwait, "cma_sigwait");
 273
 274    function sigwait
 275      (set : access sigset_t;
 276       sig : access Signal) return int;
 277    pragma Inline (sigwait);
 278    --  DCE_THREADS has a nonstandard sigwait
 279
 280    function pthread_kill
 281      (thread : pthread_t;
 282       sig    : Signal) return int;
 283    pragma Inline (pthread_kill);
 284    --  DCE_THREADS doesn't have pthread_kill
 285
 286    type sigset_t_ptr is access all sigset_t;
 287
 288    function pthread_sigmask
 289      (how  : int;
 290       set  : sigset_t_ptr;
 291       oset : sigset_t_ptr) return int;
 292    --  DCE THREADS does not have pthread_sigmask. Instead, it uses
 293    --  sigprocmask to do the signal handling when the thread library is
 294    --  sucked in.
 295    pragma Import (C, pthread_sigmask, "sigprocmask");
 296
 297    --------------------------
 298    -- POSIX.1c  Section 11 --
 299    --------------------------
 300
 301    function pthread_mutexattr_init
 302      (attr : access pthread_mutexattr_t) return int;
 303    --  DCE_THREADS has a nonstandard pthread_mutexattr_init.
 304
 305    function pthread_mutexattr_destroy
 306      (attr : access pthread_mutexattr_t) return int;
 307    --  DCE_THREADS has a nonstandard pthread_mutexattr_destroy
 308
 309    function pthread_mutex_init
 310      (mutex : access pthread_mutex_t;
 311       attr  : access pthread_mutexattr_t) return int;
 312    --  DCE_THREADS has a nonstandard pthread_mutex_init
 313
 314    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 315    --  DCE_THREADS has a nonstandard pthread_mutex_destroy
 316
 317    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 318    pragma Inline (pthread_mutex_lock);
 319    --  DCE_THREADS has nonstandard pthread_mutex_lock
 320
 321    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 322    pragma Inline (pthread_mutex_unlock);
 323    --  DCE_THREADS has nonstandard pthread_mutex_lock
 324
 325    function pthread_condattr_init
 326      (attr : access pthread_condattr_t) return int;
 327    --  DCE_THREADS has nonstandard pthread_condattr_init
 328
 329    function pthread_condattr_destroy
 330      (attr : access pthread_condattr_t) return int;
 331    --  DCE_THREADS has nonstandard pthread_condattr_destroy
 332
 333    function pthread_cond_init
 334      (cond : access pthread_cond_t;
 335       attr : access pthread_condattr_t) return int;
 336    --  DCE_THREADS has nonstandard pthread_cond_init
 337
 338    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 339    --  DCE_THREADS has nonstandard pthread_cond_destroy
 340
 341    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 342    pragma Inline (pthread_cond_signal);
 343    --  DCE_THREADS has nonstandard pthread_cond_signal
 344
 345    function pthread_cond_wait
 346      (cond  : access pthread_cond_t;
 347       mutex : access pthread_mutex_t) return int;
 348    pragma Inline (pthread_cond_wait);
 349    --  DCE_THREADS has a nonstandard pthread_cond_wait
 350
 351    function pthread_cond_timedwait
 352      (cond    : access pthread_cond_t;
 353       mutex   : access pthread_mutex_t;
 354       abstime : access timespec) return int;
 355    pragma Inline (pthread_cond_timedwait);
 356    --  DCE_THREADS has a nonstandard pthread_cond_timedwait
 357
 358    --------------------------
 359    -- POSIX.1c  Section 13 --
 360    --------------------------
 361
 362    type struct_sched_param is record
 363       sched_priority : int;  --  scheduling priority
 364    end record;
 365
 366    function pthread_setschedparam
 367      (thread : pthread_t;
 368       policy : int;
 369       param  : access struct_sched_param) return int;
 370    pragma Inline (pthread_setschedparam);
 371    --  DCE_THREADS has a nonstandard pthread_setschedparam
 372
 373    function sched_yield return int;
 374    pragma Inline (sched_yield);
 375    --  DCE_THREADS has a nonstandard sched_yield
 376
 377    ---------------------------
 378    -- P1003.1c - Section 16 --
 379    ---------------------------
 380
 381    function pthread_attr_init (attributes : access pthread_attr_t) return int;
 382    pragma Inline (pthread_attr_init);
 383    --  DCE_THREADS has a nonstandard pthread_attr_init
 384
 385    function pthread_attr_destroy
 386      (attributes : access pthread_attr_t) return int;
 387    pragma Inline (pthread_attr_destroy);
 388    --  DCE_THREADS has a nonstandard pthread_attr_destroy
 389
 390    function pthread_attr_setstacksize
 391      (attr      : access pthread_attr_t;
 392       stacksize : size_t) return int;
 393    pragma Inline (pthread_attr_setstacksize);
 394    --  DCE_THREADS has a nonstandard pthread_attr_setstacksize
 395
 396    function pthread_create
 397      (thread        : access pthread_t;
 398       attributes    : access pthread_attr_t;
 399       start_routine : Thread_Body;
 400       arg           : System.Address) return int;
 401    pragma Inline (pthread_create);
 402    --  DCE_THREADS has a nonstandard pthread_create
 403
 404    procedure pthread_detach (thread : access pthread_t);
 405    pragma Import (C, pthread_detach);
 406
 407    procedure pthread_exit (status : System.Address);
 408    pragma Import (C, pthread_exit, "pthread_exit");
 409
 410    function pthread_self return pthread_t;
 411    pragma Import (C, pthread_self, "pthread_self");
 412
 413    --------------------------
 414    -- POSIX.1c  Section 17 --
 415    --------------------------
 416
 417    function pthread_setspecific
 418      (key   : pthread_key_t;
 419       value : System.Address) return int;
 420    pragma Inline (pthread_setspecific);
 421    --  DCE_THREADS has a nonstandard pthread_setspecific
 422
 423    function pthread_getspecific (key : pthread_key_t) return System.Address;
 424    pragma Inline (pthread_getspecific);
 425    --  DCE_THREADS has a nonstandard pthread_getspecific
 426
 427    type destructor_pointer is access procedure (arg : System.Address);
 428
 429    function pthread_key_create
 430      (key        : access pthread_key_t;
 431       destructor : destructor_pointer) return int;
 432    pragma Inline (pthread_key_create);
 433    --  DCE_THREADS has a nonstandard pthread_key_create
 434
 435 private
 436
 437    type array_type_1 is array (Integer range 0 .. 7) of unsigned_long;
 438    type sigset_t is record
 439       X_X_sigbits : array_type_1;
 440    end record;
 441    pragma Convention (C, sigset_t);
 442
 443    type pid_t is new int;
 444
 445    type time_t is new long;
 446
 447    type timespec is record
 448       tv_sec  : time_t;
 449       tv_nsec : long;
 450    end record;
 451    pragma Convention (C, timespec);
 452
 453    type clockid_t is new int;
 454    CLOCK_REALTIME : constant clockid_t := 1;
 455
 456    type struct_timeval is record
 457       tv_sec  : time_t;
 458       tv_usec : time_t;
 459    end record;
 460    pragma Convention (C, struct_timeval);
 461
 462    type cma_t_address is new System.Address;
 463
 464    type cma_t_handle is record
 465       field1 : cma_t_address;
 466       field2 : Short_Integer;
 467       field3 : Short_Integer;
 468    end record;
 469    for cma_t_handle'Size use 64;
 470
 471    type pthread_attr_t is new cma_t_handle;
 472    pragma Convention (C_Pass_By_Copy, pthread_attr_t);
 473
 474    type pthread_condattr_t is new cma_t_handle;
 475    pragma Convention (C_Pass_By_Copy, pthread_condattr_t);
 476
 477    type pthread_mutexattr_t is new cma_t_handle;
 478    pragma Convention (C_Pass_By_Copy, pthread_mutexattr_t);
 479
 480    type pthread_t is new cma_t_handle;
 481    pragma Convention (C_Pass_By_Copy, pthread_t);
 482
 483    type pthread_mutex_t is new cma_t_handle;
 484    pragma Convention (C_Pass_By_Copy, pthread_mutex_t);
 485
 486    type pthread_cond_t is new cma_t_handle;
 487    pragma Convention (C_Pass_By_Copy, pthread_cond_t);
 488
 489    type pthread_key_t is new int;
 490
 491 end System.OS_Interface;