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) 1995-2008, 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 the tasking run-time (libgnarl).
  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 Ada.Unchecked_Conversion;
  44
  45 with Interfaces.C;
  46
  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    pragma Convention (C, isr_address);
 138
 139    function intr_attach (sig : int; handler : isr_address) return long;
 140
 141    Intr_Attach_Reset : constant Boolean := True;
 142    --  True if intr_attach is reset after an interrupt handler is called
 143
 144    function sigaddset (set : access sigset_t; sig : Signal) return int;
 145    pragma Import (C, sigaddset, "sigaddset");
 146
 147    function sigdelset (set : access sigset_t; sig : Signal) return int;
 148    pragma Import (C, sigdelset, "sigdelset");
 149
 150    function sigfillset (set : access sigset_t) return int;
 151    pragma Import (C, sigfillset, "sigfillset");
 152
 153    function sigismember (set : access sigset_t; sig : Signal) return int;
 154    pragma Import (C, sigismember, "sigismember");
 155
 156    function sigemptyset (set : access sigset_t) return int;
 157    pragma Import (C, sigemptyset, "sigemptyset");
 158
 159    type Signal_Handler is access procedure (signo : Signal);
 160
 161    type struct_sigaction is record
 162       sa_handler : System.Address;
 163       sa_mask    : sigset_t;
 164       sa_flags   : int;
 165    end record;
 166    pragma Convention (C, struct_sigaction);
 167    type struct_sigaction_ptr is access all struct_sigaction;
 168
 169    SA_RESTART  : constant  := 16#40#;
 170    SA_SIGINFO  : constant  := 16#10#;
 171
 172    SIG_BLOCK   : constant  := 0;
 173    SIG_UNBLOCK : constant  := 1;
 174    SIG_SETMASK : constant  := 2;
 175
 176    SIG_DFL : constant := 0;
 177    SIG_IGN : constant := 1;
 178    SIG_ERR : constant := -1;
 179
 180    function sigaction
 181      (sig  : Signal;
 182       act  : struct_sigaction_ptr;
 183       oact : struct_sigaction_ptr) return int;
 184    pragma Import (C, sigaction, "sigaction");
 185
 186    ----------
 187    -- Time --
 188    ----------
 189
 190    type timespec is private;
 191
 192    function nanosleep (rqtp, rmtp : access timespec) return int;
 193    pragma Import (C, nanosleep);
 194
 195    type clockid_t is private;
 196
 197    CLOCK_REALTIME : constant clockid_t;
 198
 199    function Clock_Gettime
 200      (Clock_Id : clockid_t; Tp : access timespec) return int;
 201    pragma Import (C, Clock_Gettime);
 202
 203    function To_Duration (TS : timespec) return Duration;
 204    pragma Inline (To_Duration);
 205
 206    function To_Timespec (D : Duration) return timespec;
 207    pragma Inline (To_Timespec);
 208
 209    type struct_timeval is private;
 210
 211    function To_Duration (TV : struct_timeval) return Duration;
 212    pragma Inline (To_Duration);
 213
 214    function To_Timeval (D : Duration) return struct_timeval;
 215    pragma Inline (To_Timeval);
 216
 217    -------------------------
 218    -- Priority Scheduling --
 219    -------------------------
 220
 221    SCHED_FIFO  : constant := 0;
 222    SCHED_RR    : constant := 1;
 223    SCHED_OTHER : constant := 2;
 224
 225    -------------
 226    -- Process --
 227    -------------
 228
 229    type pid_t is private;
 230
 231    function kill (pid : pid_t; sig : Signal) return int;
 232    pragma Import (C, kill, "kill");
 233
 234    function getpid return pid_t;
 235    pragma Import (C, getpid, "getpid");
 236
 237    -------------
 238    -- Threads --
 239    -------------
 240
 241    type Thread_Body is access
 242      function (arg : System.Address) return System.Address;
 243    pragma Convention (C, Thread_Body);
 244
 245    function Thread_Body_Access is new
 246      Ada.Unchecked_Conversion (System.Address, Thread_Body);
 247
 248    type pthread_t           is private;
 249    subtype Thread_Id        is pthread_t;
 250
 251    type pthread_mutex_t     is limited private;
 252    type pthread_cond_t      is limited private;
 253    type pthread_attr_t      is limited private;
 254    type pthread_mutexattr_t is limited private;
 255    type pthread_condattr_t  is limited private;
 256    type pthread_key_t       is private;
 257
 258    -----------
 259    -- Stack --
 260    -----------
 261
 262    function Get_Stack_Base (thread : pthread_t) return Address;
 263    pragma Inline (Get_Stack_Base);
 264    --  This is a dummy procedure to share some GNULLI files
 265
 266    ---------------------------------------
 267    -- Nonstandard Thread Initialization --
 268    ---------------------------------------
 269
 270    procedure pthread_init;
 271    pragma Inline (pthread_init);
 272    --  This is a dummy procedure to share some GNULLI files
 273
 274    -------------------------
 275    -- POSIX.1c  Section 3 --
 276    -------------------------
 277
 278    function sigwait (set : access sigset_t) return int;
 279    pragma Import (C, sigwait, "cma_sigwait");
 280
 281    function sigwait
 282      (set : access sigset_t;
 283       sig : access Signal) return int;
 284    pragma Inline (sigwait);
 285    --  DCE_THREADS has a nonstandard sigwait
 286
 287    function pthread_kill
 288      (thread : pthread_t;
 289       sig    : Signal) return int;
 290    pragma Inline (pthread_kill);
 291    --  DCE_THREADS doesn't have pthread_kill
 292
 293    function pthread_sigmask
 294      (how  : int;
 295       set  : access sigset_t;
 296       oset : access sigset_t) return int;
 297    --  DCE THREADS does not have pthread_sigmask. Instead, it uses sigprocmask
 298    --  to do the signal handling when the thread library is sucked in.
 299    pragma Import (C, pthread_sigmask, "sigprocmask");
 300
 301    --------------------------
 302    -- POSIX.1c  Section 11 --
 303    --------------------------
 304
 305    function pthread_mutexattr_init
 306      (attr : access pthread_mutexattr_t) return int;
 307    --  DCE_THREADS has a nonstandard pthread_mutexattr_init
 308
 309    function pthread_mutexattr_destroy
 310      (attr : access pthread_mutexattr_t) return int;
 311    --  DCE_THREADS has a nonstandard pthread_mutexattr_destroy
 312
 313    function pthread_mutex_init
 314      (mutex : access pthread_mutex_t;
 315       attr  : access pthread_mutexattr_t) return int;
 316    --  DCE_THREADS has a nonstandard pthread_mutex_init
 317
 318    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 319    --  DCE_THREADS has a nonstandard pthread_mutex_destroy
 320
 321    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 322    pragma Inline (pthread_mutex_lock);
 323    --  DCE_THREADS has nonstandard pthread_mutex_lock
 324
 325    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 326    pragma Inline (pthread_mutex_unlock);
 327    --  DCE_THREADS has nonstandard pthread_mutex_lock
 328
 329    function pthread_condattr_init
 330      (attr : access pthread_condattr_t) return int;
 331    --  DCE_THREADS has nonstandard pthread_condattr_init
 332
 333    function pthread_condattr_destroy
 334      (attr : access pthread_condattr_t) return int;
 335    --  DCE_THREADS has nonstandard pthread_condattr_destroy
 336
 337    function pthread_cond_init
 338      (cond : access pthread_cond_t;
 339       attr : access pthread_condattr_t) return int;
 340    --  DCE_THREADS has nonstandard pthread_cond_init
 341
 342    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 343    --  DCE_THREADS has nonstandard pthread_cond_destroy
 344
 345    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 346    pragma Inline (pthread_cond_signal);
 347    --  DCE_THREADS has nonstandard pthread_cond_signal
 348
 349    function pthread_cond_wait
 350      (cond  : access pthread_cond_t;
 351       mutex : access pthread_mutex_t) return int;
 352    pragma Inline (pthread_cond_wait);
 353    --  DCE_THREADS has a nonstandard pthread_cond_wait
 354
 355    function pthread_cond_timedwait
 356      (cond    : access pthread_cond_t;
 357       mutex   : access pthread_mutex_t;
 358       abstime : access timespec) return int;
 359    pragma Inline (pthread_cond_timedwait);
 360    --  DCE_THREADS has a nonstandard pthread_cond_timedwait
 361
 362    --------------------------
 363    -- POSIX.1c  Section 13 --
 364    --------------------------
 365
 366    type struct_sched_param is record
 367       sched_priority : int;  --  scheduling priority
 368    end record;
 369
 370    function pthread_setschedparam
 371      (thread : pthread_t;
 372       policy : int;
 373       param  : access struct_sched_param) return int;
 374    pragma Inline (pthread_setschedparam);
 375    --  DCE_THREADS has a nonstandard pthread_setschedparam
 376
 377    function sched_yield return int;
 378    pragma Inline (sched_yield);
 379    --  DCE_THREADS has a nonstandard sched_yield
 380
 381    ---------------------------
 382    -- P1003.1c - Section 16 --
 383    ---------------------------
 384
 385    function pthread_attr_init (attributes : access pthread_attr_t) return int;
 386    pragma Inline (pthread_attr_init);
 387    --  DCE_THREADS has a nonstandard pthread_attr_init
 388
 389    function pthread_attr_destroy
 390      (attributes : access pthread_attr_t) return int;
 391    pragma Inline (pthread_attr_destroy);
 392    --  DCE_THREADS has a nonstandard pthread_attr_destroy
 393
 394    function pthread_attr_setstacksize
 395      (attr      : access pthread_attr_t;
 396       stacksize : size_t) return int;
 397    pragma Inline (pthread_attr_setstacksize);
 398    --  DCE_THREADS has a nonstandard pthread_attr_setstacksize
 399
 400    function pthread_create
 401      (thread        : access pthread_t;
 402       attributes    : access pthread_attr_t;
 403       start_routine : Thread_Body;
 404       arg           : System.Address) return int;
 405    pragma Inline (pthread_create);
 406    --  DCE_THREADS has a nonstandard pthread_create
 407
 408    procedure pthread_detach (thread : access pthread_t);
 409    pragma Import (C, pthread_detach);
 410
 411    procedure pthread_exit (status : System.Address);
 412    pragma Import (C, pthread_exit, "pthread_exit");
 413
 414    function pthread_self return pthread_t;
 415    pragma Import (C, pthread_self, "pthread_self");
 416
 417    --------------------------
 418    -- POSIX.1c  Section 17 --
 419    --------------------------
 420
 421    function pthread_setspecific
 422      (key   : pthread_key_t;
 423       value : System.Address) return int;
 424    pragma Inline (pthread_setspecific);
 425    --  DCE_THREADS has a nonstandard pthread_setspecific
 426
 427    function pthread_getspecific (key : pthread_key_t) return System.Address;
 428    pragma Inline (pthread_getspecific);
 429    --  DCE_THREADS has a nonstandard pthread_getspecific
 430
 431    type destructor_pointer is access procedure (arg : System.Address);
 432    pragma Convention (C, destructor_pointer);
 433
 434    function pthread_key_create
 435      (key        : access pthread_key_t;
 436       destructor : destructor_pointer) return int;
 437    pragma Inline (pthread_key_create);
 438    --  DCE_THREADS has a nonstandard pthread_key_create
 439
 440 private
 441
 442    type array_type_1 is array (Integer range 0 .. 7) of unsigned_long;
 443    type sigset_t is record
 444       X_X_sigbits : array_type_1;
 445    end record;
 446    pragma Convention (C, sigset_t);
 447
 448    type pid_t is new int;
 449
 450    type time_t is new long;
 451
 452    type timespec is record
 453       tv_sec  : time_t;
 454       tv_nsec : long;
 455    end record;
 456    pragma Convention (C, timespec);
 457
 458    type clockid_t is new int;
 459    CLOCK_REALTIME : constant clockid_t := 1;
 460
 461    type struct_timeval is record
 462       tv_sec  : time_t;
 463       tv_usec : time_t;
 464    end record;
 465    pragma Convention (C, struct_timeval);
 466
 467    type cma_t_address is new System.Address;
 468
 469    type cma_t_handle is record
 470       field1 : cma_t_address;
 471       field2 : Short_Integer;
 472       field3 : Short_Integer;
 473    end record;
 474    for cma_t_handle'Size use 64;
 475
 476    type pthread_attr_t is new cma_t_handle;
 477    pragma Convention (C_Pass_By_Copy, pthread_attr_t);
 478
 479    type pthread_condattr_t is new cma_t_handle;
 480    pragma Convention (C_Pass_By_Copy, pthread_condattr_t);
 481
 482    type pthread_mutexattr_t is new cma_t_handle;
 483    pragma Convention (C_Pass_By_Copy, pthread_mutexattr_t);
 484
 485    type pthread_t is new cma_t_handle;
 486    pragma Convention (C_Pass_By_Copy, pthread_t);
 487
 488    type pthread_mutex_t is new cma_t_handle;
 489    pragma Convention (C_Pass_By_Copy, pthread_mutex_t);
 490
 491    type pthread_cond_t is new cma_t_handle;
 492    pragma Convention (C_Pass_By_Copy, pthread_cond_t);
 493
 494    type pthread_key_t is new int;
 495
 496 end System.OS_Interface;