gcc/ada/5sosinte.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: 1.30 $
  10 --                                                                          --
  11 --          Copyright (C) 1997-2001 Free Software Foundation, 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 (native) version of this package
  38
  39 --  This package includes 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 ("-lthread");
  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 := 62;
  75    ETIMEDOUT : constant := 145;
  76
  77    -------------
  78    -- Signals --
  79    -------------
  80
  81    Max_Interrupt : constant := 45;
  82    type Signal is new int range 0 .. Max_Interrupt;
  83    for Signal'Size use int'Size;
  84
  85    SIGHUP     : constant := 1; --  hangup
  86    SIGINT     : constant := 2; --  interrupt (rubout)
  87    SIGQUIT    : constant := 3; --  quit (ASCD FS)
  88    SIGILL     : constant := 4; --  illegal instruction (not reset)
  89    SIGTRAP    : constant := 5; --  trace trap (not reset)
  90    SIGIOT     : constant := 6; --  IOT instruction
  91    SIGABRT    : constant := 6; --  used by abort, replace SIGIOT in the  future
  92    SIGEMT     : constant := 7; --  EMT instruction
  93    SIGFPE     : constant := 8; --  floating point exception
  94    SIGKILL    : constant := 9; --  kill (cannot be caught or ignored)
  95    SIGBUS     : constant := 10; --  bus error
  96    SIGSEGV    : constant := 11; --  segmentation violation
  97    SIGSYS     : constant := 12; --  bad argument to system call
  98    SIGPIPE    : constant := 13; --  write on a pipe with no one to read it
  99    SIGALRM    : constant := 14; --  alarm clock
 100    SIGTERM    : constant := 15; --  software termination signal from kill
 101    SIGUSR1    : constant := 16; --  user defined signal 1
 102    SIGUSR2    : constant := 17; --  user defined signal 2
 103    SIGCLD     : constant := 18; --  alias for SIGCHLD
 104    SIGCHLD    : constant := 18; --  child status change
 105    SIGPWR     : constant := 19; --  power-fail restart
 106    SIGWINCH   : constant := 20; --  window size change
 107    SIGURG     : constant := 21; --  urgent condition on IO channel
 108    SIGPOLL    : constant := 22; --  pollable event occurred
 109    SIGIO      : constant := 22; --  I/O possible (Solaris SIGPOLL alias)
 110    SIGSTOP    : constant := 23; --  stop (cannot be caught or ignored)
 111    SIGTSTP    : constant := 24; --  user stop requested from tty
 112    SIGCONT    : constant := 25; --  stopped process has been continued
 113    SIGTTIN    : constant := 26; --  background tty read attempted
 114    SIGTTOU    : constant := 27; --  background tty write attempted
 115    SIGVTALRM  : constant := 28; --  virtual timer expired
 116    SIGPROF    : constant := 29; --  profiling timer expired
 117    SIGXCPU    : constant := 30; --  CPU time limit exceeded
 118    SIGXFSZ    : constant := 31; --  filesize limit exceeded
 119    SIGWAITING : constant := 32; --  process's lwps blocked (Solaris)
 120    SIGLWP     : constant := 33; --  used by thread library (Solaris)
 121    SIGFREEZE  : constant := 34; --  used by CPR (Solaris)
 122    SIGTHAW    : constant := 35; --  used by CPR (Solaris)
 123    SIGCANCEL  : constant := 36; --  thread cancellation signal (libthread)
 124
 125    type Signal_Set is array (Natural range <>) of Signal;
 126
 127    Unmasked : constant Signal_Set := (SIGTRAP, SIGLWP, SIGPROF);
 128
 129    --  Following signals should not be disturbed.
 130    --  See c-posix-signals.c in FLORIST
 131
 132    Reserved : constant Signal_Set := (SIGKILL, SIGSTOP, SIGWAITING, SIGCANCEL);
 133
 134    type sigset_t is private;
 135
 136    function sigaddset (set : access sigset_t; sig : Signal) return int;
 137    pragma Import (C, sigaddset, "sigaddset");
 138
 139    function sigdelset (set : access sigset_t; sig : Signal) return int;
 140    pragma Import (C, sigdelset, "sigdelset");
 141
 142    function sigfillset (set : access sigset_t) return int;
 143    pragma Import (C, sigfillset, "sigfillset");
 144
 145    function sigismember (set : access sigset_t; sig : Signal) return int;
 146    pragma Import (C, sigismember, "sigismember");
 147
 148    function sigemptyset (set : access sigset_t) return int;
 149    pragma Import (C, sigemptyset, "sigemptyset");
 150
 151    type union_type_3 is new String (1 .. 116);
 152    type siginfo_t is record
 153       si_signo     : int;
 154       si_code      : int;
 155       si_errno     : int;
 156       X_data       : union_type_3;
 157    end record;
 158    pragma Convention (C, siginfo_t);
 159
 160    --  The types mcontext_t and gregset_t are part of the ucontext_t
 161    --  information, which is specific to Solaris2.4 for SPARC
 162    --  The ucontext_t info seems to be used by the handler
 163    --  for SIGSEGV to decide whether it is a Storage_Error (stack overflow) or
 164    --  a Constraint_Error (bad pointer).  The original code that did this
 165    --  is suspect, so it is not clear whether we really need this part of
 166    --  the signal context information, or perhaps something else.
 167    --  More analysis is needed, after which these declarations may need to
 168    --  be changed.
 169
 170    FPE_INTDIV  : constant := 1; --  integer divide by zero
 171    FPE_INTOVF  : constant := 2; --  integer overflow
 172    FPE_FLTDIV  : constant := 3; --  floating point divide by zero
 173    FPE_FLTOVF  : constant := 4; --  floating point overflow
 174    FPE_FLTUND  : constant := 5; --  floating point underflow
 175    FPE_FLTRES  : constant := 6; --  floating point inexact result
 176    FPE_FLTINV  : constant := 7; --  invalid floating point operation
 177    FPE_FLTSUB  : constant := 8; --  subscript out of range
 178
 179    type greg_t is new int;
 180
 181    type gregset_t is array (0 .. 18) of greg_t;
 182
 183    type union_type_2 is new String (1 .. 128);
 184    type record_type_1 is record
 185       fpu_fr       : union_type_2;
 186       fpu_q        : System.Address;
 187       fpu_fsr      : unsigned;
 188       fpu_qcnt     : unsigned_char;
 189       fpu_q_entrysize  : unsigned_char;
 190       fpu_en       : unsigned_char;
 191    end record;
 192    pragma Convention (C, record_type_1);
 193
 194    type array_type_7 is array (Integer range 0 .. 20) of long;
 195    type mcontext_t is record
 196       gregs        : gregset_t;
 197       gwins        : System.Address;
 198       fpregs       : record_type_1;
 199       filler       : array_type_7;
 200    end record;
 201    pragma Convention (C, mcontext_t);
 202
 203    type record_type_2 is record
 204       ss_sp        : System.Address;
 205       ss_size      : int;
 206       ss_flags     : int;
 207    end record;
 208    pragma Convention (C, record_type_2);
 209
 210    type array_type_8 is array (Integer range 0 .. 22) of long;
 211    type ucontext_t is record
 212       uc_flags     : unsigned_long;
 213       uc_link      : System.Address;
 214       uc_sigmask   : sigset_t;
 215       uc_stack     : record_type_2;
 216       uc_mcontext  : mcontext_t;
 217       uc_filler    : array_type_8;
 218    end record;
 219    pragma Convention (C, ucontext_t);
 220
 221    type Signal_Handler is access procedure
 222      (signo   : Signal;
 223       info    : access siginfo_t;
 224       context : access ucontext_t);
 225
 226    type union_type_1 is new plain_char;
 227    type array_type_2 is array (Integer range 0 .. 1) of int;
 228    type struct_sigaction is record
 229       sa_flags   : int;
 230       sa_handler : System.Address;
 231       sa_mask    : sigset_t;
 232       sa_resv    : array_type_2;
 233    end record;
 234    pragma Convention (C, struct_sigaction);
 235    type struct_sigaction_ptr is access all struct_sigaction;
 236
 237    SIG_BLOCK   : constant := 1;
 238    SIG_UNBLOCK : constant := 2;
 239    SIG_SETMASK : constant := 3;
 240
 241    SIG_DFL : constant := 0;
 242    SIG_IGN : constant := 1;
 243
 244    function sigaction
 245      (sig  : Signal;
 246       act  : struct_sigaction_ptr;
 247       oact : struct_sigaction_ptr) return int;
 248    pragma Import (C, sigaction, "sigaction");
 249
 250    ----------
 251    -- Time --
 252    ----------
 253
 254    type timespec is private;
 255
 256    type clockid_t is private;
 257
 258    CLOCK_REALTIME : constant clockid_t;
 259
 260    function clock_gettime
 261      (clock_id : clockid_t; tp : access timespec) return int;
 262    pragma Import (C, clock_gettime, "clock_gettime");
 263
 264    function To_Duration (TS : timespec) return Duration;
 265    pragma Inline (To_Duration);
 266
 267    function To_Timespec (D : Duration) return timespec;
 268    pragma Inline (To_Timespec);
 269
 270    type struct_timeval is private;
 271    --  This is needed on systems that do not have clock_gettime()
 272    --  but do have gettimeofday().
 273
 274    function To_Duration (TV : struct_timeval) return Duration;
 275    pragma Inline (To_Duration);
 276
 277    function To_Timeval (D : Duration) return struct_timeval;
 278    pragma Inline (To_Timeval);
 279
 280    -------------
 281    -- Process --
 282    -------------
 283
 284    type pid_t is private;
 285
 286    function kill (pid : pid_t; sig : Signal) return int;
 287    pragma Import (C, kill, "kill");
 288
 289    function getpid return pid_t;
 290    pragma Import (C, getpid, "getpid");
 291
 292    -------------
 293    -- Threads --
 294    -------------
 295
 296    type Thread_Body is access
 297      function (arg : System.Address) return System.Address;
 298
 299    THR_DETACHED  : constant := 64;
 300    THR_BOUND     : constant := 1;
 301    THR_NEW_LWP   : constant := 2;
 302    USYNC_THREAD  : constant := 0;
 303
 304    type thread_t is private;
 305    subtype Thread_Id is thread_t;
 306
 307    type mutex_t is limited private;
 308
 309    type cond_t is limited private;
 310
 311    type thread_key_t is private;
 312
 313    function thr_create
 314      (stack_base    : System.Address;
 315       stack_size    : size_t;
 316       start_routine : Thread_Body;
 317       arg           : System.Address;
 318       flags         : int;
 319       new_thread    : access thread_t) return int;
 320    pragma Import (C, thr_create, "thr_create");
 321
 322    function thr_min_stack return size_t;
 323    pragma Import (C, thr_min_stack, "thr_min_stack");
 324
 325    function thr_self return thread_t;
 326    pragma Import (C, thr_self, "thr_self");
 327
 328    function mutex_init
 329      (mutex : access mutex_t;
 330       mtype : int;
 331       arg   : System.Address) return int;
 332    pragma Import (C, mutex_init, "mutex_init");
 333
 334    function mutex_destroy (mutex : access mutex_t) return int;
 335    pragma Import (C, mutex_destroy, "mutex_destroy");
 336
 337    function mutex_lock (mutex : access mutex_t) return int;
 338    pragma Import (C, mutex_lock, "mutex_lock");
 339
 340    function mutex_unlock (mutex : access mutex_t) return int;
 341    pragma Import (C, mutex_unlock, "mutex_unlock");
 342
 343    function cond_init
 344      (cond  : access cond_t;
 345       ctype : int;
 346       arg   : int) return int;
 347    pragma Import (C, cond_init, "cond_init");
 348
 349    function cond_wait
 350      (cond : access cond_t; mutex : access mutex_t) return int;
 351    pragma Import (C, cond_wait, "cond_wait");
 352
 353    function cond_timedwait
 354      (cond    : access cond_t;
 355       mutex   : access mutex_t;
 356       abstime : access timespec) return int;
 357    pragma Import (C, cond_timedwait, "cond_timedwait");
 358
 359    function cond_signal (cond : access cond_t) return int;
 360    pragma Import (C, cond_signal, "cond_signal");
 361
 362    function cond_destroy (cond : access cond_t) return int;
 363    pragma Import (C, cond_destroy, "cond_destroy");
 364
 365    function thr_setspecific
 366      (key : thread_key_t; value : System.Address) return int;
 367    pragma Import (C, thr_setspecific, "thr_setspecific");
 368
 369    function thr_getspecific
 370      (key   : thread_key_t;
 371       value : access System.Address) return int;
 372    pragma Import (C, thr_getspecific, "thr_getspecific");
 373
 374    function thr_keycreate
 375      (key : access thread_key_t; destructor : System.Address) return int;
 376    pragma Import (C, thr_keycreate, "thr_keycreate");
 377
 378    function thr_setprio (thread : thread_t; priority : int) return int;
 379    pragma Import (C, thr_setprio, "thr_setprio");
 380
 381    procedure thr_exit (status : System.Address);
 382    pragma Import (C, thr_exit, "thr_exit");
 383
 384    function thr_setconcurrency (new_level : int) return int;
 385    pragma Import (C, thr_setconcurrency, "thr_setconcurrency");
 386
 387    function sigwait (set : access sigset_t; sig : access Signal) return int;
 388    pragma Import (C, sigwait, "__posix_sigwait");
 389
 390    function thr_kill (thread : thread_t; sig : Signal) return int;
 391    pragma Import (C, thr_kill, "thr_kill");
 392
 393    type sigset_t_ptr is access all sigset_t;
 394
 395    function thr_sigsetmask
 396      (how  : int;
 397       set  : sigset_t_ptr;
 398       oset : sigset_t_ptr) return int;
 399    pragma Import (C, thr_sigsetmask, "thr_sigsetmask");
 400
 401    function pthread_sigmask
 402      (how  : int;
 403       set  : sigset_t_ptr;
 404       oset : sigset_t_ptr) return int;
 405    pragma Import (C, pthread_sigmask, "thr_sigsetmask");
 406
 407    function thr_suspend (target_thread : thread_t) return int;
 408    pragma Import (C, thr_suspend, "thr_suspend");
 409
 410    function thr_continue (target_thread : thread_t) return int;
 411    pragma Import (C, thr_continue, "thr_continue");
 412
 413    procedure thr_yield;
 414    pragma Import (C, thr_yield, "thr_yield");
 415
 416    ---------
 417    -- LWP --
 418    ---------
 419
 420    P_PID   : constant := 0;
 421    P_LWPID : constant := 8;
 422
 423    PC_GETCID    : constant := 0;
 424    PC_GETCLINFO : constant := 1;
 425    PC_SETPARMS  : constant := 2;
 426    PC_GETPARMS  : constant := 3;
 427    PC_ADMIN     : constant := 4;
 428
 429    PC_CLNULL : constant := -1;
 430
 431    RT_NOCHANGE : constant := -1;
 432    RT_TQINF    : constant := -2;
 433    RT_TQDEF    : constant := -3;
 434
 435    PC_CLNMSZ : constant := 16;
 436
 437    PC_VERSION : constant := 1;
 438
 439    type lwpid_t is new int;
 440
 441    type pri_t is new short;
 442
 443    type id_t is new long;
 444
 445    P_MYID : constant := -1;
 446    --  the specified LWP or process is the current one.
 447
 448    type struct_pcinfo is record
 449       pc_cid    : id_t;
 450       pc_clname : String (1 .. PC_CLNMSZ);
 451       rt_maxpri : short;
 452    end record;
 453    pragma Convention (C, struct_pcinfo);
 454
 455    type struct_pcparms is record
 456       pc_cid     : id_t;
 457       rt_pri     : pri_t;
 458       rt_tqsecs  : long;
 459       rt_tqnsecs : long;
 460    end record;
 461    pragma Convention (C, struct_pcparms);
 462
 463    function priocntl
 464      (ver     : int;
 465       id_type : int;
 466       id      : lwpid_t;
 467       cmd     : int;
 468       arg     : System.Address) return Interfaces.C.long;
 469    pragma Import (C, priocntl, "__priocntl");
 470
 471    function lwp_self return lwpid_t;
 472    pragma Import (C, lwp_self, "_lwp_self");
 473
 474    type processorid_t is new int;
 475    type processorid_t_ptr is access all processorid_t;
 476
 477    --  Constants for function processor_bind
 478
 479    PBIND_QUERY : constant processorid_t := -2;
 480    --  the processor bindings are not changed.
 481
 482    PBIND_NONE  : constant processorid_t := -1;
 483    --  the processor bindings of the specified LWPs are cleared.
 484
 485    --  Flags for function p_online
 486
 487    PR_OFFLINE : constant int := 1;
 488    --  processor is offline, as quiet as possible
 489
 490    PR_ONLINE  : constant int := 2;
 491    --  processor online
 492
 493    PR_STATUS  : constant int := 3;
 494    --  value passed to p_online to request status
 495
 496    function p_online (processorid : processorid_t; flag : int) return int;
 497    pragma Import (C, p_online, "p_online");
 498
 499    function processor_bind
 500      (id_type : int;
 501       id      : id_t;
 502       proc_id : processorid_t;
 503       obind   : processorid_t_ptr) return int;
 504    pragma Import (C, processor_bind, "processor_bind");
 505
 506    procedure pthread_init;
 507    --  dummy procedure to share s-intman.adb with other Solaris targets.
 508
 509 private
 510
 511    type array_type_1 is array (0 .. 3) of unsigned_long;
 512    type sigset_t is record
 513       X_X_sigbits : array_type_1;
 514    end record;
 515    pragma Convention (C, sigset_t);
 516
 517    type pid_t is new long;
 518
 519    type time_t is new long;
 520
 521    type timespec is record
 522       tv_sec  : time_t;
 523       tv_nsec : long;
 524    end record;
 525    pragma Convention (C, timespec);
 526
 527    type clockid_t is new int;
 528    CLOCK_REALTIME : constant clockid_t := 0;
 529
 530    type struct_timeval is record
 531       tv_sec  : long;
 532       tv_usec : long;
 533    end record;
 534    pragma Convention (C, struct_timeval);
 535
 536    type thread_t is new unsigned;
 537
 538    type array_type_9 is array (0 .. 3) of unsigned_char;
 539    type record_type_3 is record
 540       flag  : array_type_9;
 541       Xtype : unsigned_long;
 542    end record;
 543    pragma Convention (C, record_type_3);
 544
 545    type mutex_t is record
 546       flags : record_type_3;
 547       lock  : String (1 .. 8);
 548       data  : String (1 .. 8);
 549    end record;
 550    pragma Convention (C, mutex_t);
 551
 552    type cond_t is record
 553       flag  : array_type_9;
 554       Xtype : unsigned_long;
 555       data  : String (1 .. 8);
 556    end record;
 557    pragma Convention (C, cond_t);
 558
 559    type thread_key_t is new unsigned;
 560
 561 end System.OS_Interface;