gcc/ada/s-osinte-solaris-posix.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) 1995-2006, 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,  51  Franklin  Street,  Fifth  Floor, --
  21 -- Boston, MA 02110-1301, 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.       --
  31 -- Extensive contributions were provided by Ada Core Technologies, Inc.     --
  32 --                                                                          --
  33 ------------------------------------------------------------------------------
  34
  35 --  This is a Solaris (POSIX Threads) version of this package
  36
  37 --  This package encapsulates all direct interfaces to OS services
  38 --  that are needed by children of System.
  39
  40 --  PLEASE DO NOT add any with-clauses to this package or remove the pragma
  41 --  Preelaborate. This package is designed to be a bottom-level (leaf) package.
  42
  43 with Interfaces.C;
  44 with Unchecked_Conversion;
  45
  46 package System.OS_Interface is
  47    pragma Preelaborate;
  48
  49    pragma Linker_Options ("-lposix4");
  50    pragma Linker_Options ("-lpthread");
  51
  52    --  The following is needed to allow --enable-threads=solaris
  53
  54    pragma Linker_Options ("-lthread");
  55
  56    subtype int            is Interfaces.C.int;
  57    subtype short          is Interfaces.C.short;
  58    subtype long           is Interfaces.C.long;
  59    subtype unsigned       is Interfaces.C.unsigned;
  60    subtype unsigned_short is Interfaces.C.unsigned_short;
  61    subtype unsigned_long  is Interfaces.C.unsigned_long;
  62    subtype unsigned_char  is Interfaces.C.unsigned_char;
  63    subtype plain_char     is Interfaces.C.plain_char;
  64    subtype size_t         is Interfaces.C.size_t;
  65
  66    -----------
  67    -- Errno --
  68    -----------
  69
  70    function errno return int;
  71    pragma Import (C, errno, "__get_errno");
  72
  73    EAGAIN    : constant := 11;
  74    EINTR     : constant := 4;
  75    EINVAL    : constant := 22;
  76    ENOMEM    : constant := 12;
  77    ETIMEDOUT : constant := 145;
  78
  79    -------------
  80    -- Signals --
  81    -------------
  82
  83    Max_Interrupt : constant := 45;
  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    SIGWINCH    : constant := 20; --  window size change
 109    SIGURG      : constant := 21; --  urgent condition on IO channel
 110    SIGPOLL     : constant := 22; --  pollable event occurred
 111    SIGIO       : constant := 22; --  I/O possible (Solaris SIGPOLL alias)
 112    SIGSTOP     : constant := 23; --  stop (cannot be caught or ignored)
 113    SIGTSTP     : constant := 24; --  user stop requested from tty
 114    SIGCONT     : constant := 25; --  stopped process has been continued
 115    SIGTTIN     : constant := 26; --  background tty read attempted
 116    SIGTTOU     : constant := 27; --  background tty write attempted
 117    SIGVTALRM   : constant := 28; --  virtual timer expired
 118    SIGPROF     : constant := 29; --  profiling timer expired
 119    SIGXCPU     : constant := 30; --  CPU time limit exceeded
 120    SIGXFSZ     : constant := 31; --  filesize limit exceeded
 121    SIGWAITING  : constant := 32; --  process's lwps blocked (Solaris)
 122    SIGLWP      : constant := 33; --  used by thread library (Solaris)
 123    SIGFREEZE   : constant := 34; --  used by CPR (Solaris)
 124    SIGTHAW     : constant := 35; --  used by CPR (Solaris)
 125    SIGCANCEL   : constant := 36; --  thread cancellation signal (libthread)
 126
 127    SIGADAABORT : constant := SIGABRT;
 128
 129    type Signal_Set is array (Natural range <>) of Signal;
 130
 131    Unmasked    : constant Signal_Set := (SIGTRAP, SIGLWP, SIGPROF);
 132
 133    --  Following signals should not be disturbed.
 134    --  See c-posix-signals.c in FLORIST
 135
 136    Reserved    : constant Signal_Set :=
 137      (SIGKILL, SIGSTOP, SIGWAITING, SIGCANCEL);
 138
 139    type sigset_t is private;
 140
 141    function sigaddset (set : access sigset_t; sig : Signal) return int;
 142    pragma Import (C, sigaddset, "sigaddset");
 143
 144    function sigdelset (set : access sigset_t; sig : Signal) return int;
 145    pragma Import (C, sigdelset, "sigdelset");
 146
 147    function sigfillset (set : access sigset_t) return int;
 148    pragma Import (C, sigfillset, "sigfillset");
 149
 150    function sigismember (set : access sigset_t; sig : Signal) return int;
 151    pragma Import (C, sigismember, "sigismember");
 152
 153    function sigemptyset (set : access sigset_t) return int;
 154    pragma Import (C, sigemptyset, "sigemptyset");
 155
 156    type struct_sigaction is record
 157       sa_flags   : int;
 158       sa_handler : System.Address;
 159       sa_mask    : sigset_t;
 160       sa_resv1   : int;
 161       sa_resv2   : int;
 162    end record;
 163    pragma Convention (C, struct_sigaction);
 164    type struct_sigaction_ptr is access all struct_sigaction;
 165
 166    SA_SIGINFO : constant := 16#0008#;
 167
 168    SIG_BLOCK   : constant := 1;
 169    SIG_UNBLOCK : constant := 2;
 170    SIG_SETMASK : constant := 3;
 171
 172    SIG_DFL : constant := 0;
 173    SIG_IGN : constant := 1;
 174
 175    function sigaction
 176      (sig  : Signal;
 177       act  : struct_sigaction_ptr;
 178       oact : struct_sigaction_ptr) return int;
 179    pragma Import (C, sigaction, "sigaction");
 180
 181    ----------
 182    -- Time --
 183    ----------
 184
 185    Time_Slice_Supported : constant Boolean := True;
 186    --  Indicates wether time slicing is supported
 187
 188    type timespec is private;
 189
 190    type clockid_t is private;
 191
 192    CLOCK_REALTIME : constant clockid_t;
 193
 194    function clock_gettime
 195      (clock_id : clockid_t;
 196       tp       : access timespec) return int;
 197    pragma Import (C, clock_gettime, "clock_gettime");
 198
 199    function To_Duration (TS : timespec) return Duration;
 200    pragma Inline (To_Duration);
 201
 202    function To_Timespec (D : Duration) return timespec;
 203    pragma Inline (To_Timespec);
 204
 205    type struct_timeval is private;
 206
 207    function To_Duration (TV : struct_timeval) return Duration;
 208    pragma Inline (To_Duration);
 209
 210    function To_Timeval (D : Duration) return struct_timeval;
 211    pragma Inline (To_Timeval);
 212
 213    -------------------------
 214    -- Priority Scheduling --
 215    -------------------------
 216
 217    SCHED_FIFO  : constant := 1;
 218    SCHED_RR    : constant := 2;
 219    SCHED_OTHER : constant := 0;
 220
 221    function To_Target_Priority
 222      (Prio : System.Any_Priority) return Interfaces.C.int;
 223    --  Maps System.Any_Priority to a POSIX priority.
 224
 225    -------------
 226    -- Process --
 227    -------------
 228
 229    type pid_t is private;
 230
 231    function kill (pid : pid_t; sig : Signal) return int;
 232    pragma Import (C, kill, "kill");
 233
 234    function getpid return pid_t;
 235    pragma Import (C, getpid, "getpid");
 236
 237    ---------
 238    -- LWP --
 239    ---------
 240
 241    function lwp_self return System.Address;
 242    pragma Import (C, lwp_self, "_lwp_self");
 243
 244    -------------
 245    -- Threads --
 246    -------------
 247
 248    type Thread_Body is access
 249      function (arg : System.Address) return System.Address;
 250
 251    function Thread_Body_Access is new
 252      Unchecked_Conversion (System.Address, Thread_Body);
 253
 254    type pthread_t           is private;
 255    subtype Thread_Id        is pthread_t;
 256
 257    type pthread_mutex_t     is limited private;
 258    type pthread_cond_t      is limited private;
 259    type pthread_attr_t      is limited private;
 260    type pthread_mutexattr_t is limited private;
 261    type pthread_condattr_t  is limited private;
 262    type pthread_key_t       is private;
 263
 264    PTHREAD_CREATE_DETACHED : constant := 16#40#;
 265
 266    -----------
 267    -- Stack --
 268    -----------
 269
 270    Stack_Base_Available : constant Boolean := False;
 271    --  Indicates whether the stack base is available on this target.
 272
 273    function Get_Stack_Base (thread : pthread_t) return Address;
 274    pragma Inline (Get_Stack_Base);
 275    --  returns the stack base of the specified thread.
 276    --  Only call this function when Stack_Base_Available is True.
 277
 278    function Get_Page_Size return size_t;
 279    function Get_Page_Size return Address;
 280    pragma Import (C, Get_Page_Size, "getpagesize");
 281    --  returns the size of a page, or 0 if this is not relevant on this
 282    --  target
 283
 284    PROT_NONE  : constant := 0;
 285    PROT_READ  : constant := 1;
 286    PROT_WRITE : constant := 2;
 287    PROT_EXEC  : constant := 4;
 288    PROT_ALL   : constant := PROT_READ + PROT_WRITE + PROT_EXEC;
 289
 290    PROT_ON    : constant := PROT_READ;
 291    PROT_OFF   : constant := PROT_ALL;
 292
 293    function mprotect (addr : Address; len : size_t; prot : int) return int;
 294    pragma Import (C, mprotect);
 295
 296    ---------------------------------------
 297    -- Nonstandard Thread Initialization --
 298    ---------------------------------------
 299
 300    procedure pthread_init;
 301    --  This is a dummy procedure to share some GNULLI files
 302
 303    -------------------------
 304    -- POSIX.1c  Section 3 --
 305    -------------------------
 306
 307    function sigwait
 308      (set : access sigset_t;
 309       sig : access Signal) return int;
 310    pragma Import (C, sigwait, "__posix_sigwait");
 311
 312    function pthread_kill
 313      (thread : pthread_t;
 314       sig    : Signal) return int;
 315    pragma Import (C, pthread_kill, "pthread_kill");
 316
 317    function pthread_sigmask
 318      (how  : int;
 319       set  : access sigset_t;
 320       oset : access sigset_t) return int;
 321    pragma Import (C, pthread_sigmask, "pthread_sigmask");
 322
 323    --------------------------
 324    -- POSIX.1c  Section 11 --
 325    --------------------------
 326
 327    function pthread_mutexattr_init
 328      (attr : access pthread_mutexattr_t) return int;
 329    pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
 330
 331    function pthread_mutexattr_destroy
 332      (attr : access pthread_mutexattr_t) return int;
 333    pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
 334
 335    function pthread_mutex_init
 336      (mutex : access pthread_mutex_t;
 337       attr  : access pthread_mutexattr_t) return int;
 338    pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
 339
 340    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 341    pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
 342
 343    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 344    pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
 345
 346    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 347    pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
 348
 349    function pthread_condattr_init
 350      (attr : access pthread_condattr_t) return int;
 351    pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
 352
 353    function pthread_condattr_destroy
 354      (attr : access pthread_condattr_t) return int;
 355    pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
 356
 357    function pthread_cond_init
 358      (cond : access pthread_cond_t;
 359       attr : access pthread_condattr_t) return int;
 360    pragma Import (C, pthread_cond_init, "pthread_cond_init");
 361
 362    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 363    pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
 364
 365    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 366    pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
 367
 368    function pthread_cond_wait
 369      (cond  : access pthread_cond_t;
 370       mutex : access pthread_mutex_t) return int;
 371    pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
 372
 373    function pthread_cond_timedwait
 374      (cond    : access pthread_cond_t;
 375       mutex   : access pthread_mutex_t;
 376       abstime : access timespec) return int;
 377    pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
 378
 379    Relative_Timed_Wait : constant Boolean := False;
 380    --  pthread_cond_timedwait requires an absolute delay time
 381
 382    --------------------------
 383    -- POSIX.1c  Section 13 --
 384    --------------------------
 385
 386    PTHREAD_PRIO_NONE    : constant := 0;
 387    PTHREAD_PRIO_INHERIT : constant := 16#10#;
 388    PTHREAD_PRIO_PROTECT : constant := 16#20#;
 389
 390    function pthread_mutexattr_setprotocol
 391      (attr     : access pthread_mutexattr_t;
 392       protocol : int) return int;
 393    pragma Import (C, pthread_mutexattr_setprotocol);
 394
 395    function pthread_mutexattr_setprioceiling
 396      (attr        : access pthread_mutexattr_t;
 397       prioceiling : int) return int;
 398    pragma Import (C, pthread_mutexattr_setprioceiling);
 399
 400    type Array_8_Int is array (0 .. 7) of int;
 401    type struct_sched_param is record
 402       sched_priority : int;
 403       sched_pad      : Array_8_Int;
 404    end record;
 405
 406    function pthread_setschedparam
 407      (thread : pthread_t;
 408       policy : int;
 409       param  : access struct_sched_param) return int;
 410    pragma Import (C, pthread_setschedparam, "pthread_setschedparam");
 411
 412    function pthread_attr_setscope
 413      (attr            : access pthread_attr_t;
 414       contentionscope : int) return int;
 415    pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
 416
 417    function pthread_attr_setinheritsched
 418      (attr         : access pthread_attr_t;
 419       inheritsched : int) return int;
 420    pragma Import (C, pthread_attr_setinheritsched);
 421
 422    function pthread_attr_setschedpolicy
 423      (attr   : access pthread_attr_t;
 424       policy : int) return int;
 425    pragma Import (C, pthread_attr_setschedpolicy);
 426
 427    function sched_yield return int;
 428    pragma Import (C, sched_yield, "sched_yield");
 429
 430    ---------------------------
 431    -- P1003.1c - Section 16 --
 432    ---------------------------
 433
 434    function pthread_attr_init (attributes : access pthread_attr_t) return int;
 435    pragma Import (C, pthread_attr_init, "pthread_attr_init");
 436
 437    function pthread_attr_destroy
 438      (attributes : access pthread_attr_t) return int;
 439    pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
 440
 441    function pthread_attr_setdetachstate
 442      (attr        : access pthread_attr_t;
 443       detachstate : int) return int;
 444    pragma Import (C, pthread_attr_setdetachstate);
 445
 446    function pthread_attr_setstacksize
 447      (attr      : access pthread_attr_t;
 448       stacksize : size_t) return int;
 449    pragma Import (C, pthread_attr_setstacksize);
 450
 451    function pthread_create
 452      (thread        : access pthread_t;
 453       attributes    : access pthread_attr_t;
 454       start_routine : Thread_Body;
 455       arg           : System.Address) return int;
 456    pragma Import (C, pthread_create, "pthread_create");
 457
 458    procedure pthread_exit (status : System.Address);
 459    pragma Import (C, pthread_exit, "pthread_exit");
 460
 461    function pthread_self return pthread_t;
 462    pragma Import (C, pthread_self, "pthread_self");
 463
 464    --------------------------
 465    -- POSIX.1c  Section 17 --
 466    --------------------------
 467
 468    function pthread_setspecific
 469      (key   : pthread_key_t;
 470       value : System.Address) return int;
 471    pragma Import (C, pthread_setspecific, "pthread_setspecific");
 472
 473    function pthread_getspecific (key : pthread_key_t) return System.Address;
 474    pragma Import (C, pthread_getspecific, "pthread_getspecific");
 475
 476    type destructor_pointer is access procedure (arg : System.Address);
 477
 478    function pthread_key_create
 479      (key        : access pthread_key_t;
 480       destructor : destructor_pointer) return int;
 481    pragma Import (C, pthread_key_create, "pthread_key_create");
 482
 483 private
 484
 485    type array_type_1 is array (Integer range 0 .. 3) of unsigned_long;
 486    type sigset_t is record
 487       X_X_sigbits  : array_type_1;
 488    end record;
 489    pragma Convention (C, sigset_t);
 490
 491    type pid_t is new long;
 492
 493    type time_t is new long;
 494
 495    type timespec is record
 496       tv_sec  : time_t;
 497       tv_nsec : long;
 498    end record;
 499    pragma Convention (C, timespec);
 500
 501    type clockid_t is new int;
 502    CLOCK_REALTIME : constant clockid_t := 0;
 503
 504    type struct_timeval is record
 505       tv_sec  : time_t;
 506       tv_usec : time_t;
 507    end record;
 508    pragma Convention (C, struct_timeval);
 509
 510    type pthread_attr_t is record
 511       pthread_attrp : System.Address;
 512    end record;
 513    pragma Convention (C, pthread_attr_t);
 514
 515    type pthread_condattr_t is record
 516       pthread_condattrp : System.Address;
 517    end record;
 518    pragma Convention (C, pthread_condattr_t);
 519
 520    type pthread_mutexattr_t is record
 521       pthread_mutexattrp : System.Address;
 522    end record;
 523    pragma Convention (C, pthread_mutexattr_t);
 524
 525    type pthread_t is new unsigned;
 526
 527    type uint64_t is mod 2 ** 64;
 528
 529    type pthread_mutex_t is record
 530       pthread_mutex_flags   : uint64_t;
 531       pthread_mutex_owner64 : uint64_t;
 532       pthread_mutex_data    : uint64_t;
 533    end record;
 534    pragma Convention (C, pthread_mutex_t);
 535    type pthread_mutex_t_ptr is access pthread_mutex_t;
 536
 537    type pthread_cond_t is record
 538       pthread_cond_flags : uint64_t;
 539       pthread_cond_data  : uint64_t;
 540    end record;
 541    pragma Convention (C, pthread_cond_t);
 542
 543    type pthread_key_t is new unsigned;
 544
 545 end System.OS_Interface;