gcc/ada/libgnarl/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) 1995-2024, Free Software Foundation, Inc.         --
  11 --                                                                          --
  12 -- GNAT 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 3,  or (at your option) any later ver- --
  15 -- sion.  GNAT 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.                                     --
  18 --                                                                          --
  19 -- As a special exception under Section 7 of GPL version 3, you are granted --
  20 -- additional permissions described in the GCC Runtime Library Exception,   --
  21 -- version 3.1, as published by the Free Software Foundation.               --
  22 --                                                                          --
  23 -- You should have received a copy of the GNU General Public License and    --
  24 -- a copy of the GCC Runtime Library Exception along with this program;     --
  25 -- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
  26 -- <http://www.gnu.org/licenses/>.                                          --
  27 --                                                                          --
  28 -- GNARL was developed by the GNARL team at Florida State University.       --
  29 -- Extensive contributions were provided by Ada Core Technologies, Inc.     --
  30 --                                                                          --
  31 ------------------------------------------------------------------------------
  32
  33 --  This is the HP-UX version of this package
  34
  35 --  This package encapsulates all direct interfaces to OS services
  36 --  that are needed by the tasking run-time (libgnarl).
  37
  38 --  PLEASE DO NOT add any with-clauses to this package or remove the pragma
  39 --  Preelaborate. This package is designed to be a bottom-level (leaf) package.
  40
  41 with Ada.Unchecked_Conversion;
  42
  43 with Interfaces.C;
  44
  45 with System.OS_Locks;
  46 with System.Parameters;
  47
  48 package System.OS_Interface is
  49    pragma Preelaborate;
  50
  51    pragma Linker_Options ("-lcma");
  52
  53    subtype int            is Interfaces.C.int;
  54    subtype short          is Interfaces.C.short;
  55    subtype long           is Interfaces.C.long;
  56    subtype unsigned       is Interfaces.C.unsigned;
  57    subtype unsigned_short is Interfaces.C.unsigned_short;
  58    subtype unsigned_long  is Interfaces.C.unsigned_long;
  59    subtype unsigned_char  is Interfaces.C.unsigned_char;
  60    subtype plain_char     is Interfaces.C.plain_char;
  61    subtype size_t         is Interfaces.C.size_t;
  62
  63    -----------
  64    -- Errno --
  65    -----------
  66
  67    function errno return int;
  68    pragma Import (C, errno, "__get_errno");
  69
  70    EAGAIN    : constant := 11;
  71    EINTR     : constant := 4;
  72    EINVAL    : constant := 22;
  73    ENOMEM    : constant := 12;
  74    ETIME     : constant := 52;
  75    ETIMEDOUT : constant := 238;
  76
  77    FUNC_ERR : constant := -1;
  78
  79    -------------
  80    -- Signals --
  81    -------------
  82
  83    Max_Interrupt : constant := 44;
  84    type Signal is new int range 0 .. Max_Interrupt;
  85    for Signal'Size use int'Size;
  86
  87    SIGHUP     : constant := 1; --  hangup
  88    SIGINT     : constant := 2; --  interrupt (rubout)
  89    SIGQUIT    : constant := 3; --  quit (ASCD FS)
  90    SIGILL     : constant := 4; --  illegal instruction (not reset)
  91    SIGTRAP    : constant := 5; --  trace trap (not reset)
  92    SIGIOT     : constant := 6; --  IOT instruction
  93    SIGABRT    : constant := 6; --  used by abort, replace SIGIOT in the  future
  94    SIGEMT     : constant := 7; --  EMT instruction
  95    SIGFPE     : constant := 8; --  floating point exception
  96    SIGKILL    : constant := 9; --  kill (cannot be caught or ignored)
  97    SIGBUS     : constant := 10; --  bus error
  98    SIGSEGV    : constant := 11; --  segmentation violation
  99    SIGSYS     : constant := 12; --  bad argument to system call
 100    SIGPIPE    : constant := 13; --  write on a pipe with no one to read it
 101    SIGALRM    : constant := 14; --  alarm clock
 102    SIGTERM    : constant := 15; --  software termination signal from kill
 103    SIGUSR1    : constant := 16; --  user defined signal 1
 104    SIGUSR2    : constant := 17; --  user defined signal 2
 105    SIGCLD     : constant := 18; --  alias for SIGCHLD
 106    SIGCHLD    : constant := 18; --  child status change
 107    SIGPWR     : constant := 19; --  power-fail restart
 108    SIGVTALRM  : constant := 20; --  virtual timer alarm
 109    SIGPROF    : constant := 21; --  profiling timer alarm
 110    SIGIO      : constant := 22; --  asynchronous I/O
 111    SIGPOLL    : constant := 22; --  pollable event occurred
 112    SIGWINCH   : constant := 23; --  window size change
 113    SIGSTOP    : constant := 24; --  stop (cannot be caught or ignored)
 114    SIGTSTP    : constant := 25; --  user stop requested from tty
 115    SIGCONT    : constant := 26; --  stopped process has been continued
 116    SIGTTIN    : constant := 27; --  background tty read attempted
 117    SIGTTOU    : constant := 28; --  background tty write attempted
 118    SIGURG     : constant := 29; --  urgent condition on IO channel
 119    SIGLOST    : constant := 30; --  remote lock lost  (NFS)
 120    SIGDIL     : constant := 32; --  DIL signal
 121    SIGXCPU    : constant := 33; --  CPU time limit exceeded (setrlimit)
 122    SIGXFSZ    : constant := 34; --  file size limit exceeded (setrlimit)
 123
 124    SIGADAABORT : constant := SIGABRT;
 125    --  Note: on other targets, we usually use SIGABRT, but on HP/UX, it
 126    --  appears that SIGABRT can't be used in sigwait(), so we use SIGTERM.
 127
 128    type Signal_Set is array (Natural range <>) of Signal;
 129
 130    Unmasked    : constant Signal_Set :=
 131      (SIGBUS, SIGTRAP, SIGTTIN, SIGTTOU, SIGTSTP);
 132
 133    Reserved    : constant Signal_Set := (SIGKILL, SIGSTOP);
 134
 135    type sigset_t is private;
 136
 137    type isr_address is access procedure (sig : int);
 138    pragma Convention (C, isr_address);
 139
 140    function intr_attach (sig : int; handler : isr_address) return long;
 141
 142    Intr_Attach_Reset : constant Boolean := True;
 143    --  True if intr_attach is reset after an interrupt handler is called
 144
 145    function sigaddset (set : access sigset_t; sig : Signal) return int;
 146    pragma Import (C, sigaddset, "sigaddset");
 147
 148    function sigdelset (set : access sigset_t; sig : Signal) return int;
 149    pragma Import (C, sigdelset, "sigdelset");
 150
 151    function sigfillset (set : access sigset_t) return int;
 152    pragma Import (C, sigfillset, "sigfillset");
 153
 154    function sigismember (set : access sigset_t; sig : Signal) return int;
 155    pragma Import (C, sigismember, "sigismember");
 156
 157    function sigemptyset (set : access sigset_t) return int;
 158    pragma Import (C, sigemptyset, "sigemptyset");
 159
 160    type Signal_Handler is access procedure (signo : Signal);
 161
 162    type struct_sigaction is record
 163       sa_handler : System.Address;
 164       sa_mask    : sigset_t;
 165       sa_flags   : int;
 166    end record;
 167    pragma Convention (C, struct_sigaction);
 168    type struct_sigaction_ptr is access all struct_sigaction;
 169
 170    SA_RESTART  : constant  := 16#40#;
 171    SA_SIGINFO  : constant  := 16#10#;
 172    SA_ONSTACK  : constant  := 16#01#;
 173
 174    SIG_BLOCK   : constant  := 0;
 175    SIG_UNBLOCK : constant  := 1;
 176    SIG_SETMASK : constant  := 2;
 177
 178    SIG_DFL : constant := 0;
 179    SIG_IGN : constant := 1;
 180    SIG_ERR : constant := -1;
 181
 182    function sigaction
 183      (sig  : Signal;
 184       act  : struct_sigaction_ptr;
 185       oact : struct_sigaction_ptr) return int;
 186    pragma Import (C, sigaction, "sigaction");
 187
 188    ----------
 189    -- Time --
 190    ----------
 191
 192    type timespec is private;
 193
 194    function nanosleep (rqtp, rmtp : access timespec) return int;
 195    pragma Import (C, nanosleep);
 196
 197    type clockid_t is new int;
 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    -------------------------
 210    -- Priority Scheduling --
 211    -------------------------
 212
 213    SCHED_FIFO  : constant := 0;
 214    SCHED_RR    : constant := 1;
 215    SCHED_OTHER : constant := 2;
 216
 217    -------------
 218    -- Process --
 219    -------------
 220
 221    type pid_t is private;
 222
 223    function kill (pid : pid_t; sig : Signal) return int;
 224    pragma Import (C, kill, "kill");
 225
 226    function getpid return pid_t;
 227    pragma Import (C, getpid, "getpid");
 228
 229    -------------
 230    -- Threads --
 231    -------------
 232
 233    type Thread_Body is access
 234      function (arg : System.Address) return System.Address;
 235    pragma Convention (C, Thread_Body);
 236
 237    function Thread_Body_Access is new
 238      Ada.Unchecked_Conversion (System.Address, Thread_Body);
 239
 240    type pthread_t           is private;
 241    subtype Thread_Id        is pthread_t;
 242
 243    subtype pthread_mutex_t  is System.OS_Locks.pthread_mutex_t;
 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    --  Read/Write lock not supported on HPUX. To add support both types
 251    --  pthread_rwlock_t and pthread_rwlockattr_t must properly be defined
 252    --  with the associated routines pthread_rwlock_[init/destroy] and
 253    --  pthread_rwlock_[rdlock/wrlock/unlock].
 254
 255    subtype pthread_rwlock_t     is pthread_mutex_t;
 256    subtype pthread_rwlockattr_t is pthread_mutexattr_t;
 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 range -2 ** (System.Parameters.time_t_bits - 1)
 451      .. 2 ** (System.Parameters.time_t_bits - 1) - 1;
 452
 453    type timespec is record
 454       tv_sec  : time_t;
 455       tv_nsec : long;
 456    end record;
 457    pragma Convention (C, timespec);
 458
 459    CLOCK_REALTIME : constant clockid_t := 1;
 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_cond_t is new cma_t_handle;
 483    pragma Convention (C_Pass_By_Copy, pthread_cond_t);
 484
 485    type pthread_key_t is new int;
 486
 487 end System.OS_Interface;