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.Parameters;
  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    SA_ONSTACK  : constant  := 16#01#;
 172
 173    SIG_BLOCK   : constant  := 0;
 174    SIG_UNBLOCK : constant  := 1;
 175    SIG_SETMASK : constant  := 2;
 176
 177    SIG_DFL : constant := 0;
 178    SIG_IGN : constant := 1;
 179    SIG_ERR : constant := -1;
 180
 181    function sigaction
 182      (sig  : Signal;
 183       act  : struct_sigaction_ptr;
 184       oact : struct_sigaction_ptr) return int;
 185    pragma Import (C, sigaction, "sigaction");
 186
 187    ----------
 188    -- Time --
 189    ----------
 190
 191    type timespec is private;
 192
 193    function nanosleep (rqtp, rmtp : access timespec) return int;
 194    pragma Import (C, nanosleep);
 195
 196    type clockid_t is new int;
 197
 198    function Clock_Gettime
 199      (Clock_Id : clockid_t; Tp : access timespec) return int;
 200    pragma Import (C, Clock_Gettime);
 201
 202    function To_Duration (TS : timespec) return Duration;
 203    pragma Inline (To_Duration);
 204
 205    function To_Timespec (D : Duration) return timespec;
 206    pragma Inline (To_Timespec);
 207
 208    -------------------------
 209    -- Priority Scheduling --
 210    -------------------------
 211
 212    SCHED_FIFO  : constant := 0;
 213    SCHED_RR    : constant := 1;
 214    SCHED_OTHER : constant := 2;
 215
 216    -------------
 217    -- Process --
 218    -------------
 219
 220    type pid_t is private;
 221
 222    function kill (pid : pid_t; sig : Signal) return int;
 223    pragma Import (C, kill, "kill");
 224
 225    function getpid return pid_t;
 226    pragma Import (C, getpid, "getpid");
 227
 228    -------------
 229    -- Threads --
 230    -------------
 231
 232    type Thread_Body is access
 233      function (arg : System.Address) return System.Address;
 234    pragma Convention (C, Thread_Body);
 235
 236    function Thread_Body_Access is new
 237      Ada.Unchecked_Conversion (System.Address, Thread_Body);
 238
 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    --  Read/Write lock not supported on HPUX. To add support both types
 250    --  pthread_rwlock_t and pthread_rwlockattr_t must properly be defined
 251    --  with the associated routines pthread_rwlock_[init/destroy] and
 252    --  pthread_rwlock_[rdlock/wrlock/unlock].
 253
 254    subtype pthread_rwlock_t     is pthread_mutex_t;
 255    subtype pthread_rwlockattr_t is pthread_mutexattr_t;
 256
 257    -----------
 258    -- Stack --
 259    -----------
 260
 261    function Get_Stack_Base (thread : pthread_t) return Address;
 262    pragma Inline (Get_Stack_Base);
 263    --  This is a dummy procedure to share some GNULLI files
 264
 265    ---------------------------------------
 266    -- Nonstandard Thread Initialization --
 267    ---------------------------------------
 268
 269    procedure pthread_init;
 270    pragma Inline (pthread_init);
 271    --  This is a dummy procedure to share some GNULLI files
 272
 273    -------------------------
 274    -- POSIX.1c  Section 3 --
 275    -------------------------
 276
 277    function sigwait (set : access sigset_t) return int;
 278    pragma Import (C, sigwait, "cma_sigwait");
 279
 280    function sigwait
 281      (set : access sigset_t;
 282       sig : access Signal) return int;
 283    pragma Inline (sigwait);
 284    --  DCE_THREADS has a nonstandard sigwait
 285
 286    function pthread_kill
 287      (thread : pthread_t;
 288       sig    : Signal) return int;
 289    pragma Inline (pthread_kill);
 290    --  DCE_THREADS doesn't have pthread_kill
 291
 292    function pthread_sigmask
 293      (how  : int;
 294       set  : access sigset_t;
 295       oset : access sigset_t) return int;
 296    --  DCE THREADS does not have pthread_sigmask. Instead, it uses sigprocmask
 297    --  to do the signal handling when the thread library is sucked in.
 298    pragma Import (C, pthread_sigmask, "sigprocmask");
 299
 300    --------------------------
 301    -- POSIX.1c  Section 11 --
 302    --------------------------
 303
 304    function pthread_mutexattr_init
 305      (attr : access pthread_mutexattr_t) return int;
 306    --  DCE_THREADS has a nonstandard pthread_mutexattr_init
 307
 308    function pthread_mutexattr_destroy
 309      (attr : access pthread_mutexattr_t) return int;
 310    --  DCE_THREADS has a nonstandard pthread_mutexattr_destroy
 311
 312    function pthread_mutex_init
 313      (mutex : access pthread_mutex_t;
 314       attr  : access pthread_mutexattr_t) return int;
 315    --  DCE_THREADS has a nonstandard pthread_mutex_init
 316
 317    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 318    --  DCE_THREADS has a nonstandard pthread_mutex_destroy
 319
 320    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 321    pragma Inline (pthread_mutex_lock);
 322    --  DCE_THREADS has nonstandard pthread_mutex_lock
 323
 324    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 325    pragma Inline (pthread_mutex_unlock);
 326    --  DCE_THREADS has nonstandard pthread_mutex_lock
 327
 328    function pthread_condattr_init
 329      (attr : access pthread_condattr_t) return int;
 330    --  DCE_THREADS has nonstandard pthread_condattr_init
 331
 332    function pthread_condattr_destroy
 333      (attr : access pthread_condattr_t) return int;
 334    --  DCE_THREADS has nonstandard pthread_condattr_destroy
 335
 336    function pthread_cond_init
 337      (cond : access pthread_cond_t;
 338       attr : access pthread_condattr_t) return int;
 339    --  DCE_THREADS has nonstandard pthread_cond_init
 340
 341    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 342    --  DCE_THREADS has nonstandard pthread_cond_destroy
 343
 344    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 345    pragma Inline (pthread_cond_signal);
 346    --  DCE_THREADS has nonstandard pthread_cond_signal
 347
 348    function pthread_cond_wait
 349      (cond  : access pthread_cond_t;
 350       mutex : access pthread_mutex_t) return int;
 351    pragma Inline (pthread_cond_wait);
 352    --  DCE_THREADS has a nonstandard pthread_cond_wait
 353
 354    function pthread_cond_timedwait
 355      (cond    : access pthread_cond_t;
 356       mutex   : access pthread_mutex_t;
 357       abstime : access timespec) return int;
 358    pragma Inline (pthread_cond_timedwait);
 359    --  DCE_THREADS has a nonstandard pthread_cond_timedwait
 360
 361    --------------------------
 362    -- POSIX.1c  Section 13 --
 363    --------------------------
 364
 365    type struct_sched_param is record
 366       sched_priority : int;  --  scheduling priority
 367    end record;
 368
 369    function pthread_setschedparam
 370      (thread : pthread_t;
 371       policy : int;
 372       param  : access struct_sched_param) return int;
 373    pragma Inline (pthread_setschedparam);
 374    --  DCE_THREADS has a nonstandard pthread_setschedparam
 375
 376    function sched_yield return int;
 377    pragma Inline (sched_yield);
 378    --  DCE_THREADS has a nonstandard sched_yield
 379
 380    ---------------------------
 381    -- P1003.1c - Section 16 --
 382    ---------------------------
 383
 384    function pthread_attr_init (attributes : access pthread_attr_t) return int;
 385    pragma Inline (pthread_attr_init);
 386    --  DCE_THREADS has a nonstandard pthread_attr_init
 387
 388    function pthread_attr_destroy
 389      (attributes : access pthread_attr_t) return int;
 390    pragma Inline (pthread_attr_destroy);
 391    --  DCE_THREADS has a nonstandard pthread_attr_destroy
 392
 393    function pthread_attr_setstacksize
 394      (attr      : access pthread_attr_t;
 395       stacksize : size_t) return int;
 396    pragma Inline (pthread_attr_setstacksize);
 397    --  DCE_THREADS has a nonstandard pthread_attr_setstacksize
 398
 399    function pthread_create
 400      (thread        : access pthread_t;
 401       attributes    : access pthread_attr_t;
 402       start_routine : Thread_Body;
 403       arg           : System.Address) return int;
 404    pragma Inline (pthread_create);
 405    --  DCE_THREADS has a nonstandard pthread_create
 406
 407    procedure pthread_detach (thread : access pthread_t);
 408    pragma Import (C, pthread_detach);
 409
 410    procedure pthread_exit (status : System.Address);
 411    pragma Import (C, pthread_exit, "pthread_exit");
 412
 413    function pthread_self return pthread_t;
 414    pragma Import (C, pthread_self, "pthread_self");
 415
 416    --------------------------
 417    -- POSIX.1c  Section 17 --
 418    --------------------------
 419
 420    function pthread_setspecific
 421      (key   : pthread_key_t;
 422       value : System.Address) return int;
 423    pragma Inline (pthread_setspecific);
 424    --  DCE_THREADS has a nonstandard pthread_setspecific
 425
 426    function pthread_getspecific (key : pthread_key_t) return System.Address;
 427    pragma Inline (pthread_getspecific);
 428    --  DCE_THREADS has a nonstandard pthread_getspecific
 429
 430    type destructor_pointer is access procedure (arg : System.Address);
 431    pragma Convention (C, destructor_pointer);
 432
 433    function pthread_key_create
 434      (key        : access pthread_key_t;
 435       destructor : destructor_pointer) return int;
 436    pragma Inline (pthread_key_create);
 437    --  DCE_THREADS has a nonstandard pthread_key_create
 438
 439 private
 440
 441    type array_type_1 is array (Integer range 0 .. 7) of unsigned_long;
 442    type sigset_t is record
 443       X_X_sigbits : array_type_1;
 444    end record;
 445    pragma Convention (C, sigset_t);
 446
 447    type pid_t is new int;
 448
 449    type time_t is range -2 ** (System.Parameters.time_t_bits - 1)
 450      .. 2 ** (System.Parameters.time_t_bits - 1) - 1;
 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    CLOCK_REALTIME : constant clockid_t := 1;
 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;