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 --                                                                          --
  10 --          Copyright (C) 1997-2001 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,  59 Temple Place - Suite 330,  Boston, --
  21 -- MA 02111-1307, 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. It is --
  31 -- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
  32 -- State University (http://www.gnat.com).                                  --
  33 --                                                                          --
  34 ------------------------------------------------------------------------------
  35
  36 --  This is a Solaris (native) version of this package
  37
  38 --  This package includes all direct interfaces to OS services
  39 --  that are needed by children of System.
  40
  41 --  PLEASE DO NOT add any with-clauses to this package
  42 --  or remove the pragma Elaborate_Body.
  43 --  It is designed to be a bottom-level (leaf) package.
  44
  45 with Interfaces.C;
  46 package System.OS_Interface is
  47    pragma Preelaborate;
  48
  49    pragma Linker_Options ("-lposix4");
  50    pragma Linker_Options ("-lthread");
  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 := 62;
  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    type Signal_Set is array (Natural range <>) of Signal;
 125
 126    Unmasked : constant Signal_Set := (SIGTRAP, SIGLWP, SIGPROF);
 127
 128    --  Following signals should not be disturbed.
 129    --  See c-posix-signals.c in FLORIST
 130
 131    Reserved : constant Signal_Set := (SIGKILL, SIGSTOP, SIGWAITING, SIGCANCEL);
 132
 133    type sigset_t is private;
 134
 135    function sigaddset (set : access sigset_t; sig : Signal) return int;
 136    pragma Import (C, sigaddset, "sigaddset");
 137
 138    function sigdelset (set : access sigset_t; sig : Signal) return int;
 139    pragma Import (C, sigdelset, "sigdelset");
 140
 141    function sigfillset (set : access sigset_t) return int;
 142    pragma Import (C, sigfillset, "sigfillset");
 143
 144    function sigismember (set : access sigset_t; sig : Signal) return int;
 145    pragma Import (C, sigismember, "sigismember");
 146
 147    function sigemptyset (set : access sigset_t) return int;
 148    pragma Import (C, sigemptyset, "sigemptyset");
 149
 150    type union_type_3 is new String (1 .. 116);
 151    type siginfo_t is record
 152       si_signo     : int;
 153       si_code      : int;
 154       si_errno     : int;
 155       X_data       : union_type_3;
 156    end record;
 157    pragma Convention (C, siginfo_t);
 158
 159    --  The types mcontext_t and gregset_t are part of the ucontext_t
 160    --  information, which is specific to Solaris2.4 for SPARC
 161    --  The ucontext_t info seems to be used by the handler
 162    --  for SIGSEGV to decide whether it is a Storage_Error (stack overflow) or
 163    --  a Constraint_Error (bad pointer).  The original code that did this
 164    --  is suspect, so it is not clear whether we really need this part of
 165    --  the signal context information, or perhaps something else.
 166    --  More analysis is needed, after which these declarations may need to
 167    --  be changed.
 168
 169    FPE_INTDIV  : constant := 1; --  integer divide by zero
 170    FPE_INTOVF  : constant := 2; --  integer overflow
 171    FPE_FLTDIV  : constant := 3; --  floating point divide by zero
 172    FPE_FLTOVF  : constant := 4; --  floating point overflow
 173    FPE_FLTUND  : constant := 5; --  floating point underflow
 174    FPE_FLTRES  : constant := 6; --  floating point inexact result
 175    FPE_FLTINV  : constant := 7; --  invalid floating point operation
 176    FPE_FLTSUB  : constant := 8; --  subscript out of range
 177
 178    type greg_t is new int;
 179
 180    type gregset_t is array (0 .. 18) of greg_t;
 181
 182    type union_type_2 is new String (1 .. 128);
 183    type record_type_1 is record
 184       fpu_fr       : union_type_2;
 185       fpu_q        : System.Address;
 186       fpu_fsr      : unsigned;
 187       fpu_qcnt     : unsigned_char;
 188       fpu_q_entrysize  : unsigned_char;
 189       fpu_en       : unsigned_char;
 190    end record;
 191    pragma Convention (C, record_type_1);
 192
 193    type array_type_7 is array (Integer range 0 .. 20) of long;
 194    type mcontext_t is record
 195       gregs        : gregset_t;
 196       gwins        : System.Address;
 197       fpregs       : record_type_1;
 198       filler       : array_type_7;
 199    end record;
 200    pragma Convention (C, mcontext_t);
 201
 202    type record_type_2 is record
 203       ss_sp        : System.Address;
 204       ss_size      : int;
 205       ss_flags     : int;
 206    end record;
 207    pragma Convention (C, record_type_2);
 208
 209    type array_type_8 is array (Integer range 0 .. 22) of long;
 210    type ucontext_t is record
 211       uc_flags     : unsigned_long;
 212       uc_link      : System.Address;
 213       uc_sigmask   : sigset_t;
 214       uc_stack     : record_type_2;
 215       uc_mcontext  : mcontext_t;
 216       uc_filler    : array_type_8;
 217    end record;
 218    pragma Convention (C, ucontext_t);
 219
 220    type Signal_Handler is access procedure
 221      (signo   : Signal;
 222       info    : access siginfo_t;
 223       context : access ucontext_t);
 224
 225    type union_type_1 is new plain_char;
 226    type array_type_2 is array (Integer range 0 .. 1) of int;
 227    type struct_sigaction is record
 228       sa_flags   : int;
 229       sa_handler : System.Address;
 230       sa_mask    : sigset_t;
 231       sa_resv    : array_type_2;
 232    end record;
 233    pragma Convention (C, struct_sigaction);
 234    type struct_sigaction_ptr is access all struct_sigaction;
 235
 236    SIG_BLOCK   : constant := 1;
 237    SIG_UNBLOCK : constant := 2;
 238    SIG_SETMASK : constant := 3;
 239
 240    SIG_DFL : constant := 0;
 241    SIG_IGN : constant := 1;
 242
 243    function sigaction
 244      (sig  : Signal;
 245       act  : struct_sigaction_ptr;
 246       oact : struct_sigaction_ptr) return int;
 247    pragma Import (C, sigaction, "sigaction");
 248
 249    ----------
 250    -- Time --
 251    ----------
 252
 253    type timespec is private;
 254
 255    type clockid_t is private;
 256
 257    CLOCK_REALTIME : constant clockid_t;
 258
 259    function clock_gettime
 260      (clock_id : clockid_t; tp : access timespec) return int;
 261    pragma Import (C, clock_gettime, "clock_gettime");
 262
 263    function To_Duration (TS : timespec) return Duration;
 264    pragma Inline (To_Duration);
 265
 266    function To_Timespec (D : Duration) return timespec;
 267    pragma Inline (To_Timespec);
 268
 269    type struct_timeval is private;
 270    --  This is needed on systems that do not have clock_gettime()
 271    --  but do have gettimeofday().
 272
 273    function To_Duration (TV : struct_timeval) return Duration;
 274    pragma Inline (To_Duration);
 275
 276    function To_Timeval (D : Duration) return struct_timeval;
 277    pragma Inline (To_Timeval);
 278
 279    -------------
 280    -- Process --
 281    -------------
 282
 283    type pid_t is private;
 284
 285    function kill (pid : pid_t; sig : Signal) return int;
 286    pragma Import (C, kill, "kill");
 287
 288    function getpid return pid_t;
 289    pragma Import (C, getpid, "getpid");
 290
 291    -------------
 292    -- Threads --
 293    -------------
 294
 295    type Thread_Body is access
 296      function (arg : System.Address) return System.Address;
 297
 298    THR_DETACHED  : constant := 64;
 299    THR_BOUND     : constant := 1;
 300    THR_NEW_LWP   : constant := 2;
 301    USYNC_THREAD  : constant := 0;
 302
 303    type thread_t is private;
 304    subtype Thread_Id is thread_t;
 305
 306    type mutex_t is limited private;
 307
 308    type cond_t is limited private;
 309
 310    type thread_key_t is private;
 311
 312    function thr_create
 313      (stack_base    : System.Address;
 314       stack_size    : size_t;
 315       start_routine : Thread_Body;
 316       arg           : System.Address;
 317       flags         : int;
 318       new_thread    : access thread_t) return int;
 319    pragma Import (C, thr_create, "thr_create");
 320
 321    function thr_min_stack return size_t;
 322    pragma Import (C, thr_min_stack, "thr_min_stack");
 323
 324    function thr_self return thread_t;
 325    pragma Import (C, thr_self, "thr_self");
 326
 327    function mutex_init
 328      (mutex : access mutex_t;
 329       mtype : int;
 330       arg   : System.Address) return int;
 331    pragma Import (C, mutex_init, "mutex_init");
 332
 333    function mutex_destroy (mutex : access mutex_t) return int;
 334    pragma Import (C, mutex_destroy, "mutex_destroy");
 335
 336    function mutex_lock (mutex : access mutex_t) return int;
 337    pragma Import (C, mutex_lock, "mutex_lock");
 338
 339    function mutex_unlock (mutex : access mutex_t) return int;
 340    pragma Import (C, mutex_unlock, "mutex_unlock");
 341
 342    function cond_init
 343      (cond  : access cond_t;
 344       ctype : int;
 345       arg   : int) return int;
 346    pragma Import (C, cond_init, "cond_init");
 347
 348    function cond_wait
 349      (cond : access cond_t; mutex : access mutex_t) return int;
 350    pragma Import (C, cond_wait, "cond_wait");
 351
 352    function cond_timedwait
 353      (cond    : access cond_t;
 354       mutex   : access mutex_t;
 355       abstime : access timespec) return int;
 356    pragma Import (C, cond_timedwait, "cond_timedwait");
 357
 358    function cond_signal (cond : access cond_t) return int;
 359    pragma Import (C, cond_signal, "cond_signal");
 360
 361    function cond_destroy (cond : access cond_t) return int;
 362    pragma Import (C, cond_destroy, "cond_destroy");
 363
 364    function thr_setspecific
 365      (key : thread_key_t; value : System.Address) return int;
 366    pragma Import (C, thr_setspecific, "thr_setspecific");
 367
 368    function thr_getspecific
 369      (key   : thread_key_t;
 370       value : access System.Address) return int;
 371    pragma Import (C, thr_getspecific, "thr_getspecific");
 372
 373    function thr_keycreate
 374      (key : access thread_key_t; destructor : System.Address) return int;
 375    pragma Import (C, thr_keycreate, "thr_keycreate");
 376
 377    function thr_setprio (thread : thread_t; priority : int) return int;
 378    pragma Import (C, thr_setprio, "thr_setprio");
 379
 380    procedure thr_exit (status : System.Address);
 381    pragma Import (C, thr_exit, "thr_exit");
 382
 383    function thr_setconcurrency (new_level : int) return int;
 384    pragma Import (C, thr_setconcurrency, "thr_setconcurrency");
 385
 386    function sigwait (set : access sigset_t; sig : access Signal) return int;
 387    pragma Import (C, sigwait, "__posix_sigwait");
 388
 389    function thr_kill (thread : thread_t; sig : Signal) return int;
 390    pragma Import (C, thr_kill, "thr_kill");
 391
 392    type sigset_t_ptr is access all sigset_t;
 393
 394    function thr_sigsetmask
 395      (how  : int;
 396       set  : sigset_t_ptr;
 397       oset : sigset_t_ptr) return int;
 398    pragma Import (C, thr_sigsetmask, "thr_sigsetmask");
 399
 400    function pthread_sigmask
 401      (how  : int;
 402       set  : sigset_t_ptr;
 403       oset : sigset_t_ptr) return int;
 404    pragma Import (C, pthread_sigmask, "thr_sigsetmask");
 405
 406    function thr_suspend (target_thread : thread_t) return int;
 407    pragma Import (C, thr_suspend, "thr_suspend");
 408
 409    function thr_continue (target_thread : thread_t) return int;
 410    pragma Import (C, thr_continue, "thr_continue");
 411
 412    procedure thr_yield;
 413    pragma Import (C, thr_yield, "thr_yield");
 414
 415    ---------
 416    -- LWP --
 417    ---------
 418
 419    P_PID   : constant := 0;
 420    P_LWPID : constant := 8;
 421
 422    PC_GETCID    : constant := 0;
 423    PC_GETCLINFO : constant := 1;
 424    PC_SETPARMS  : constant := 2;
 425    PC_GETPARMS  : constant := 3;
 426    PC_ADMIN     : constant := 4;
 427
 428    PC_CLNULL : constant := -1;
 429
 430    RT_NOCHANGE : constant := -1;
 431    RT_TQINF    : constant := -2;
 432    RT_TQDEF    : constant := -3;
 433
 434    PC_CLNMSZ : constant := 16;
 435
 436    PC_VERSION : constant := 1;
 437
 438    type lwpid_t is new int;
 439
 440    type pri_t is new short;
 441
 442    type id_t is new long;
 443
 444    P_MYID : constant := -1;
 445    --  the specified LWP or process is the current one.
 446
 447    type struct_pcinfo is record
 448       pc_cid    : id_t;
 449       pc_clname : String (1 .. PC_CLNMSZ);
 450       rt_maxpri : short;
 451    end record;
 452    pragma Convention (C, struct_pcinfo);
 453
 454    type struct_pcparms is record
 455       pc_cid     : id_t;
 456       rt_pri     : pri_t;
 457       rt_tqsecs  : long;
 458       rt_tqnsecs : long;
 459    end record;
 460    pragma Convention (C, struct_pcparms);
 461
 462    function priocntl
 463      (ver     : int;
 464       id_type : int;
 465       id      : lwpid_t;
 466       cmd     : int;
 467       arg     : System.Address) return Interfaces.C.long;
 468    pragma Import (C, priocntl, "__priocntl");
 469
 470    function lwp_self return lwpid_t;
 471    pragma Import (C, lwp_self, "_lwp_self");
 472
 473    type processorid_t is new int;
 474    type processorid_t_ptr is access all processorid_t;
 475
 476    --  Constants for function processor_bind
 477
 478    PBIND_QUERY : constant processorid_t := -2;
 479    --  the processor bindings are not changed.
 480
 481    PBIND_NONE  : constant processorid_t := -1;
 482    --  the processor bindings of the specified LWPs are cleared.
 483
 484    --  Flags for function p_online
 485
 486    PR_OFFLINE : constant int := 1;
 487    --  processor is offline, as quiet as possible
 488
 489    PR_ONLINE  : constant int := 2;
 490    --  processor online
 491
 492    PR_STATUS  : constant int := 3;
 493    --  value passed to p_online to request status
 494
 495    function p_online (processorid : processorid_t; flag : int) return int;
 496    pragma Import (C, p_online, "p_online");
 497
 498    function processor_bind
 499      (id_type : int;
 500       id      : id_t;
 501       proc_id : processorid_t;
 502       obind   : processorid_t_ptr) return int;
 503    pragma Import (C, processor_bind, "processor_bind");
 504
 505    procedure pthread_init;
 506    --  dummy procedure to share s-intman.adb with other Solaris targets.
 507
 508 private
 509
 510    type array_type_1 is array (0 .. 3) of unsigned_long;
 511    type sigset_t is record
 512       X_X_sigbits : array_type_1;
 513    end record;
 514    pragma Convention (C, sigset_t);
 515
 516    type pid_t is new long;
 517
 518    type time_t is new long;
 519
 520    type timespec is record
 521       tv_sec  : time_t;
 522       tv_nsec : long;
 523    end record;
 524    pragma Convention (C, timespec);
 525
 526    type clockid_t is new int;
 527    CLOCK_REALTIME : constant clockid_t := 0;
 528
 529    type struct_timeval is record
 530       tv_sec  : long;
 531       tv_usec : long;
 532    end record;
 533    pragma Convention (C, struct_timeval);
 534
 535    type thread_t is new unsigned;
 536
 537    type array_type_9 is array (0 .. 3) of unsigned_char;
 538    type record_type_3 is record
 539       flag  : array_type_9;
 540       Xtype : unsigned_long;
 541    end record;
 542    pragma Convention (C, record_type_3);
 543
 544    type mutex_t is record
 545       flags : record_type_3;
 546       lock  : String (1 .. 8);
 547       data  : String (1 .. 8);
 548    end record;
 549    pragma Convention (C, mutex_t);
 550
 551    type cond_t is record
 552       flag  : array_type_9;
 553       Xtype : unsigned_long;
 554       data  : String (1 .. 8);
 555    end record;
 556    pragma Convention (C, cond_t);
 557
 558    type thread_key_t is new unsigned;
 559
 560 end System.OS_Interface;