gcc/ada/54osinte.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: 1.6 $
  10 --                                                                          --
  11 --            Copyright (C) 2000-2001 Ada Core Technologies, Inc.           --
  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 a Solaris (POSIX Threads) 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 ("-lposix4");
  51    pragma Linker_Options ("-lpthread");
  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    ETIMEDOUT : constant := 145;
  75
  76    -------------
  77    -- Signals --
  78    -------------
  79
  80    Max_Interrupt : constant := 45;
  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    SIGWINCH    : constant := 20; --  window size change
 106    SIGURG      : constant := 21; --  urgent condition on IO channel
 107    SIGPOLL     : constant := 22; --  pollable event occurred
 108    SIGIO       : constant := 22; --  I/O possible (Solaris SIGPOLL alias)
 109    SIGSTOP     : constant := 23; --  stop (cannot be caught or ignored)
 110    SIGTSTP     : constant := 24; --  user stop requested from tty
 111    SIGCONT     : constant := 25; --  stopped process has been continued
 112    SIGTTIN     : constant := 26; --  background tty read attempted
 113    SIGTTOU     : constant := 27; --  background tty write attempted
 114    SIGVTALRM   : constant := 28; --  virtual timer expired
 115    SIGPROF     : constant := 29; --  profiling timer expired
 116    SIGXCPU     : constant := 30; --  CPU time limit exceeded
 117    SIGXFSZ     : constant := 31; --  filesize limit exceeded
 118    SIGWAITING  : constant := 32; --  process's lwps blocked (Solaris)
 119    SIGLWP      : constant := 33; --  used by thread library (Solaris)
 120    SIGFREEZE   : constant := 34; --  used by CPR (Solaris)
 121    SIGTHAW     : constant := 35; --  used by CPR (Solaris)
 122    SIGCANCEL   : constant := 36; --  thread cancellation signal (libthread)
 123
 124    SIGADAABORT : constant := SIGABRT;
 125
 126    type Signal_Set is array (Natural range <>) of Signal;
 127
 128    Unmasked    : constant Signal_Set := (SIGTRAP, SIGLWP, SIGPROF);
 129
 130    --  Following signals should not be disturbed.
 131    --  See c-posix-signals.c in FLORIST
 132
 133    Reserved    : constant Signal_Set :=
 134      (SIGKILL, SIGSTOP, SIGWAITING, SIGCANCEL);
 135
 136    type sigset_t is private;
 137
 138    function sigaddset (set : access sigset_t; sig : Signal) return int;
 139    pragma Import (C, sigaddset, "sigaddset");
 140
 141    function sigdelset (set : access sigset_t; sig : Signal) return int;
 142    pragma Import (C, sigdelset, "sigdelset");
 143
 144    function sigfillset (set : access sigset_t) return int;
 145    pragma Import (C, sigfillset, "sigfillset");
 146
 147    function sigismember (set : access sigset_t; sig : Signal) return int;
 148    pragma Import (C, sigismember, "sigismember");
 149
 150    function sigemptyset (set : access sigset_t) return int;
 151    pragma Import (C, sigemptyset, "sigemptyset");
 152
 153    type struct_sigaction is record
 154       sa_flags   : int;
 155       sa_handler : System.Address;
 156       sa_mask    : sigset_t;
 157       sa_resv1   : int;
 158       sa_resv2   : int;
 159    end record;
 160    pragma Convention (C, struct_sigaction);
 161    type struct_sigaction_ptr is access all struct_sigaction;
 162
 163    SIG_BLOCK   : constant := 1;
 164    SIG_UNBLOCK : constant := 2;
 165    SIG_SETMASK : constant := 3;
 166
 167    SIG_DFL : constant := 0;
 168    SIG_IGN : constant := 1;
 169
 170    function sigaction
 171      (sig  : Signal;
 172       act  : struct_sigaction_ptr;
 173       oact : struct_sigaction_ptr) return int;
 174    pragma Import (C, sigaction, "sigaction");
 175
 176    ----------
 177    -- Time --
 178    ----------
 179
 180    Time_Slice_Supported : constant Boolean := True;
 181    --  Indicates wether time slicing is supported
 182
 183    type timespec is private;
 184
 185    type clockid_t is private;
 186
 187    CLOCK_REALTIME : constant clockid_t;
 188
 189    function clock_gettime
 190      (clock_id : clockid_t;
 191       tp       : access timespec) return int;
 192    pragma Import (C, clock_gettime, "clock_gettime");
 193
 194    function To_Duration (TS : timespec) return Duration;
 195    pragma Inline (To_Duration);
 196
 197    function To_Timespec (D : Duration) return timespec;
 198    pragma Inline (To_Timespec);
 199
 200    type struct_timeval is private;
 201
 202    function To_Duration (TV : struct_timeval) return Duration;
 203    pragma Inline (To_Duration);
 204
 205    function To_Timeval (D : Duration) return struct_timeval;
 206    pragma Inline (To_Timeval);
 207
 208    -------------------------
 209    -- Priority Scheduling --
 210    -------------------------
 211
 212    SCHED_FIFO  : constant := 1;
 213    SCHED_RR    : constant := 2;
 214    SCHED_OTHER : constant := 0;
 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    -- LWP --
 230    ---------
 231
 232    function lwp_self return System.Address;
 233    pragma Import (C, lwp_self, "_lwp_self");
 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    PTHREAD_CREATE_DETACHED : constant := 16#40#;
 252
 253    -----------
 254    -- Stack --
 255    -----------
 256
 257    Stack_Base_Available : constant Boolean := False;
 258    --  Indicates wether the stack base is available on this target.
 259
 260    function Get_Stack_Base (thread : pthread_t) return Address;
 261    pragma Inline (Get_Stack_Base);
 262    --  returns the stack base of the specified thread.
 263    --  Only call this function when Stack_Base_Available is True.
 264
 265    function Get_Page_Size return size_t;
 266    function Get_Page_Size return Address;
 267    pragma Import (C, Get_Page_Size, "getpagesize");
 268    --  returns the size of a page, or 0 if this is not relevant on this
 269    --  target
 270
 271    PROT_NONE  : constant := 0;
 272    PROT_READ  : constant := 1;
 273    PROT_WRITE : constant := 2;
 274    PROT_EXEC  : constant := 4;
 275    PROT_ALL   : constant := PROT_READ + PROT_WRITE + PROT_EXEC;
 276
 277    PROT_ON    : constant := PROT_READ;
 278    PROT_OFF   : constant := PROT_ALL;
 279
 280    function mprotect (addr : Address; len : size_t; prot : int) return int;
 281    pragma Import (C, mprotect);
 282
 283    ---------------------------------------
 284    -- Nonstandard Thread Initialization --
 285    ---------------------------------------
 286
 287    procedure pthread_init;
 288    --  This is a dummy procedure to share some GNULLI files
 289
 290    -------------------------
 291    -- POSIX.1c  Section 3 --
 292    -------------------------
 293
 294    function sigwait
 295      (set : access sigset_t;
 296       sig : access Signal) return int;
 297    pragma Import (C, sigwait, "sigwait");
 298
 299    function pthread_kill
 300      (thread : pthread_t;
 301       sig    : Signal) return int;
 302    pragma Import (C, pthread_kill, "pthread_kill");
 303
 304    type sigset_t_ptr is access all sigset_t;
 305
 306    function pthread_sigmask
 307      (how  : int;
 308       set  : sigset_t_ptr;
 309       oset : sigset_t_ptr) return int;
 310    pragma Import (C, pthread_sigmask, "pthread_sigmask");
 311
 312    --------------------------
 313    -- POSIX.1c  Section 11 --
 314    --------------------------
 315
 316    function pthread_mutexattr_init
 317      (attr : access pthread_mutexattr_t) return int;
 318    pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
 319
 320    function pthread_mutexattr_destroy
 321      (attr : access pthread_mutexattr_t) return int;
 322    pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
 323
 324    function pthread_mutex_init
 325      (mutex : access pthread_mutex_t;
 326       attr  : access pthread_mutexattr_t) return int;
 327    pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
 328
 329    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 330    pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
 331
 332    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 333    pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
 334
 335    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 336    pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
 337
 338    function pthread_condattr_init
 339      (attr : access pthread_condattr_t) return int;
 340    pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
 341
 342    function pthread_condattr_destroy
 343      (attr : access pthread_condattr_t) return int;
 344    pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
 345
 346    function pthread_cond_init
 347      (cond : access pthread_cond_t;
 348       attr : access pthread_condattr_t) return int;
 349    pragma Import (C, pthread_cond_init, "pthread_cond_init");
 350
 351    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 352    pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
 353
 354    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 355    pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
 356
 357    function pthread_cond_wait
 358      (cond  : access pthread_cond_t;
 359       mutex : access pthread_mutex_t) return int;
 360    pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
 361
 362    function pthread_cond_timedwait
 363      (cond    : access pthread_cond_t;
 364       mutex   : access pthread_mutex_t;
 365       abstime : access timespec) return int;
 366    pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
 367
 368    Relative_Timed_Wait : constant Boolean := False;
 369    --  pthread_cond_timedwait requires an absolute delay time
 370
 371    --------------------------
 372    -- POSIX.1c  Section 13 --
 373    --------------------------
 374
 375    PTHREAD_PRIO_NONE    : constant := 0;
 376    PTHREAD_PRIO_INHERIT : constant := 16#10#;
 377    PTHREAD_PRIO_PROTECT : constant := 16#20#;
 378
 379    function pthread_mutexattr_setprotocol
 380      (attr     : access pthread_mutexattr_t;
 381       protocol : int) return int;
 382    pragma Import (C, pthread_mutexattr_setprotocol);
 383
 384    function pthread_mutexattr_setprioceiling
 385      (attr        : access pthread_mutexattr_t;
 386       prioceiling : int) return int;
 387    pragma Import (C, pthread_mutexattr_setprioceiling);
 388
 389    type Array_8_Int is array (0 .. 7) of int;
 390    type struct_sched_param is record
 391       sched_priority : int;
 392       sched_pad      : Array_8_Int;
 393    end record;
 394
 395    function pthread_setschedparam
 396      (thread : pthread_t;
 397       policy : int;
 398       param  : access struct_sched_param) return int;
 399    pragma Import (C, pthread_setschedparam, "pthread_setschedparam");
 400
 401    function pthread_attr_setscope
 402      (attr            : access pthread_attr_t;
 403       contentionscope : int) return int;
 404    pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
 405
 406    function pthread_attr_setinheritsched
 407      (attr         : access pthread_attr_t;
 408       inheritsched : int) return int;
 409    pragma Import (C, pthread_attr_setinheritsched);
 410
 411    function pthread_attr_setschedpolicy
 412      (attr   : access pthread_attr_t;
 413       policy : int) return int;
 414    pragma Import (C, pthread_attr_setschedpolicy);
 415
 416    function sched_yield return int;
 417    pragma Import (C, sched_yield, "sched_yield");
 418
 419    ---------------------------
 420    -- P1003.1c - Section 16 --
 421    ---------------------------
 422
 423    function pthread_attr_init (attributes : access pthread_attr_t) return int;
 424    pragma Import (C, pthread_attr_init, "pthread_attr_init");
 425
 426    function pthread_attr_destroy
 427      (attributes : access pthread_attr_t) return int;
 428    pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
 429
 430    function pthread_attr_setdetachstate
 431      (attr        : access pthread_attr_t;
 432       detachstate : int) return int;
 433    pragma Import (C, pthread_attr_setdetachstate);
 434
 435    function pthread_attr_setstacksize
 436      (attr      : access pthread_attr_t;
 437       stacksize : size_t) return int;
 438    pragma Import (C, pthread_attr_setstacksize);
 439
 440    function pthread_create
 441      (thread        : access pthread_t;
 442       attributes    : access pthread_attr_t;
 443       start_routine : Thread_Body;
 444       arg           : System.Address) return int;
 445    pragma Import (C, pthread_create, "pthread_create");
 446
 447    procedure pthread_exit (status : System.Address);
 448    pragma Import (C, pthread_exit, "pthread_exit");
 449
 450    function pthread_self return pthread_t;
 451    pragma Import (C, pthread_self, "pthread_self");
 452
 453    --------------------------
 454    -- POSIX.1c  Section 17 --
 455    --------------------------
 456
 457    function pthread_setspecific
 458      (key   : pthread_key_t;
 459       value : System.Address) return int;
 460    pragma Import (C, pthread_setspecific, "pthread_setspecific");
 461
 462    function pthread_getspecific (key : pthread_key_t) return System.Address;
 463    pragma Import (C, pthread_getspecific, "pthread_getspecific");
 464
 465    type destructor_pointer is access procedure (arg : System.Address);
 466
 467    function pthread_key_create
 468      (key        : access pthread_key_t;
 469       destructor : destructor_pointer) return int;
 470    pragma Import (C, pthread_key_create, "pthread_key_create");
 471
 472 private
 473
 474    type array_type_1 is array (Integer range 0 .. 3) of unsigned_long;
 475    type sigset_t is record
 476       X_X_sigbits  : array_type_1;
 477    end record;
 478    pragma Convention (C, sigset_t);
 479
 480    type pid_t is new long;
 481
 482    type time_t is new long;
 483
 484    type timespec is record
 485       tv_sec  : time_t;
 486       tv_nsec : long;
 487    end record;
 488    pragma Convention (C, timespec);
 489
 490    type clockid_t is new int;
 491    CLOCK_REALTIME : constant clockid_t := 0;
 492
 493    type struct_timeval is record
 494       tv_sec  : time_t;
 495       tv_usec : time_t;
 496    end record;
 497    pragma Convention (C, struct_timeval);
 498
 499    type pthread_attr_t is record
 500       pthread_attrp : System.Address;
 501    end record;
 502    pragma Convention (C, pthread_attr_t);
 503
 504    type pthread_condattr_t is record
 505       pthread_condattrp : System.Address;
 506    end record;
 507    pragma Convention (C, pthread_condattr_t);
 508
 509    type pthread_mutexattr_t is record
 510       pthread_mutexattrp : System.Address;
 511    end record;
 512    pragma Convention (C, pthread_mutexattr_t);
 513
 514    type pthread_t is new unsigned;
 515
 516    type uint64_t is mod 2 ** 64;
 517
 518    type pthread_mutex_t is record
 519       pthread_mutex_flags   : uint64_t;
 520       pthread_mutex_owner64 : uint64_t;
 521       pthread_mutex_data    : uint64_t;
 522    end record;
 523    pragma Convention (C, pthread_mutex_t);
 524    type pthread_mutex_t_ptr is access pthread_mutex_t;
 525
 526    type pthread_cond_t is record
 527       pthread_cond_flags : uint64_t;
 528       pthread_cond_data  : uint64_t;
 529    end record;
 530    pragma Convention (C, pthread_cond_t);
 531
 532    type pthread_key_t is new unsigned;
 533
 534 end System.OS_Interface;