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) 1995-2009, 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 the tasking run-time (libgnarl).
  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
  45 with Ada.Unchecked_Conversion;
  46
  47 package System.OS_Interface is
  48    pragma Preelaborate;
  49
  50    pragma Linker_Options ("-lposix4");
  51    pragma Linker_Options ("-lpthread");
  52
  53    --  The following is needed to allow --enable-threads=solaris
  54
  55    pragma Linker_Options ("-lthread");
  56
  57    subtype int            is Interfaces.C.int;
  58    subtype short          is Interfaces.C.short;
  59    subtype long           is Interfaces.C.long;
  60    subtype unsigned       is Interfaces.C.unsigned;
  61    subtype unsigned_short is Interfaces.C.unsigned_short;
  62    subtype unsigned_long  is Interfaces.C.unsigned_long;
  63    subtype unsigned_char  is Interfaces.C.unsigned_char;
  64    subtype plain_char     is Interfaces.C.plain_char;
  65    subtype size_t         is Interfaces.C.size_t;
  66
  67    -----------
  68    -- Errno --
  69    -----------
  70
  71    function errno return int;
  72    pragma Import (C, errno, "__get_errno");
  73
  74    EAGAIN    : constant := 11;
  75    EINTR     : constant := 4;
  76    EINVAL    : constant := 22;
  77    ENOMEM    : constant := 12;
  78    ETIMEDOUT : constant := 145;
  79
  80    -------------
  81    -- Signals --
  82    -------------
  83
  84    Max_Interrupt : constant := 45;
  85    type Signal is new int range 0 .. Max_Interrupt;
  86    for Signal'Size use int'Size;
  87
  88    SIGHUP      : constant := 1; --  hangup
  89    SIGINT      : constant := 2; --  interrupt (rubout)
  90    SIGQUIT     : constant := 3; --  quit (ASCD FS)
  91    SIGILL      : constant := 4; --  illegal instruction (not reset)
  92    SIGTRAP     : constant := 5; --  trace trap (not reset)
  93    SIGIOT      : constant := 6; --  IOT instruction
  94    SIGABRT     : constant := 6; --  used by abort, replace SIGIOT in the future
  95    SIGEMT      : constant := 7; --  EMT instruction
  96    SIGFPE      : constant := 8; --  floating point exception
  97    SIGKILL     : constant := 9; --  kill (cannot be caught or ignored)
  98    SIGBUS      : constant := 10; --  bus error
  99    SIGSEGV     : constant := 11; --  segmentation violation
 100    SIGSYS      : constant := 12; --  bad argument to system call
 101    SIGPIPE     : constant := 13; --  write on a pipe with no one to read it
 102    SIGALRM     : constant := 14; --  alarm clock
 103    SIGTERM     : constant := 15; --  software termination signal from kill
 104    SIGUSR1     : constant := 16; --  user defined signal 1
 105    SIGUSR2     : constant := 17; --  user defined signal 2
 106    SIGCLD      : constant := 18; --  alias for SIGCHLD
 107    SIGCHLD     : constant := 18; --  child status change
 108    SIGPWR      : constant := 19; --  power-fail restart
 109    SIGWINCH    : constant := 20; --  window size change
 110    SIGURG      : constant := 21; --  urgent condition on IO channel
 111    SIGPOLL     : constant := 22; --  pollable event occurred
 112    SIGIO       : constant := 22; --  I/O possible (Solaris SIGPOLL alias)
 113    SIGSTOP     : constant := 23; --  stop (cannot be caught or ignored)
 114    SIGTSTP     : constant := 24; --  user stop requested from tty
 115    SIGCONT     : constant := 25; --  stopped process has been continued
 116    SIGTTIN     : constant := 26; --  background tty read attempted
 117    SIGTTOU     : constant := 27; --  background tty write attempted
 118    SIGVTALRM   : constant := 28; --  virtual timer expired
 119    SIGPROF     : constant := 29; --  profiling timer expired
 120    SIGXCPU     : constant := 30; --  CPU time limit exceeded
 121    SIGXFSZ     : constant := 31; --  filesize limit exceeded
 122    SIGWAITING  : constant := 32; --  process's lwps blocked (Solaris)
 123    SIGLWP      : constant := 33; --  used by thread library (Solaris)
 124    SIGFREEZE   : constant := 34; --  used by CPR (Solaris)
 125    SIGTHAW     : constant := 35; --  used by CPR (Solaris)
 126    SIGCANCEL   : constant := 36; --  thread cancellation signal (libthread)
 127
 128    SIGADAABORT : constant := SIGABRT;
 129
 130    type Signal_Set is array (Natural range <>) of Signal;
 131
 132    Unmasked    : constant Signal_Set := (SIGTRAP, SIGLWP, SIGPROF);
 133
 134    --  Following signals should not be disturbed.
 135    --  See c-posix-signals.c in FLORIST
 136
 137    Reserved    : constant Signal_Set :=
 138      (SIGKILL, SIGSTOP, SIGWAITING, SIGCANCEL);
 139
 140    type sigset_t is private;
 141
 142    function sigaddset (set : access sigset_t; sig : Signal) return int;
 143    pragma Import (C, sigaddset, "sigaddset");
 144
 145    function sigdelset (set : access sigset_t; sig : Signal) return int;
 146    pragma Import (C, sigdelset, "sigdelset");
 147
 148    function sigfillset (set : access sigset_t) return int;
 149    pragma Import (C, sigfillset, "sigfillset");
 150
 151    function sigismember (set : access sigset_t; sig : Signal) return int;
 152    pragma Import (C, sigismember, "sigismember");
 153
 154    function sigemptyset (set : access sigset_t) return int;
 155    pragma Import (C, sigemptyset, "sigemptyset");
 156
 157    type struct_sigaction is record
 158       sa_flags   : int;
 159       sa_handler : System.Address;
 160       sa_mask    : sigset_t;
 161       sa_resv1   : int;
 162       sa_resv2   : int;
 163    end record;
 164    pragma Convention (C, struct_sigaction);
 165    type struct_sigaction_ptr is access all struct_sigaction;
 166
 167    SA_SIGINFO : constant := 16#0008#;
 168    SA_ONSTACK : constant := 16#0001#;
 169
 170    SIG_BLOCK   : constant := 1;
 171    SIG_UNBLOCK : constant := 2;
 172    SIG_SETMASK : constant := 3;
 173
 174    SIG_DFL : constant := 0;
 175    SIG_IGN : constant := 1;
 176
 177    function sigaction
 178      (sig  : Signal;
 179       act  : struct_sigaction_ptr;
 180       oact : struct_sigaction_ptr) return int;
 181    pragma Import (C, sigaction, "sigaction");
 182
 183    ----------
 184    -- Time --
 185    ----------
 186
 187    Time_Slice_Supported : constant Boolean := True;
 188    --  Indicates whether time slicing is supported
 189
 190    type timespec is private;
 191
 192    type clockid_t is private;
 193
 194    CLOCK_REALTIME : constant clockid_t;
 195
 196    function clock_gettime
 197      (clock_id : clockid_t;
 198       tp       : access timespec) return int;
 199    pragma Import (C, clock_gettime, "clock_gettime");
 200
 201    function To_Duration (TS : timespec) return Duration;
 202    pragma Inline (To_Duration);
 203
 204    function To_Timespec (D : Duration) return timespec;
 205    pragma Inline (To_Timespec);
 206
 207    -------------------------
 208    -- Priority Scheduling --
 209    -------------------------
 210
 211    SCHED_FIFO  : constant := 1;
 212    SCHED_RR    : constant := 2;
 213    SCHED_OTHER : constant := 0;
 214
 215    function To_Target_Priority
 216      (Prio : System.Any_Priority) return Interfaces.C.int;
 217    --  Maps System.Any_Priority to a POSIX priority
 218
 219    -------------
 220    -- Process --
 221    -------------
 222
 223    type pid_t is private;
 224
 225    function kill (pid : pid_t; sig : Signal) return int;
 226    pragma Import (C, kill, "kill");
 227
 228    function getpid return pid_t;
 229    pragma Import (C, getpid, "getpid");
 230
 231    ---------
 232    -- LWP --
 233    ---------
 234
 235    function lwp_self return System.Address;
 236    pragma Import (C, lwp_self, "_lwp_self");
 237
 238    -------------
 239    -- Threads --
 240    -------------
 241
 242    type Thread_Body is access
 243      function (arg : System.Address) return System.Address;
 244    pragma Convention (C, Thread_Body);
 245
 246    function Thread_Body_Access is new
 247      Ada.Unchecked_Conversion (System.Address, Thread_Body);
 248
 249    type pthread_t           is private;
 250    subtype Thread_Id        is pthread_t;
 251
 252    type pthread_mutex_t     is limited private;
 253    type pthread_cond_t      is limited private;
 254    type pthread_attr_t      is limited private;
 255    type pthread_mutexattr_t is limited private;
 256    type pthread_condattr_t  is limited private;
 257    type pthread_key_t       is private;
 258
 259    PTHREAD_CREATE_DETACHED : constant := 16#40#;
 260
 261    PTHREAD_SCOPE_PROCESS : constant := 0;
 262    PTHREAD_SCOPE_SYSTEM  : constant := 1;
 263
 264    -----------
 265    -- Stack --
 266    -----------
 267
 268    type stack_t is record
 269       ss_sp    : System.Address;
 270       ss_size  : size_t;
 271       ss_flags : int;
 272    end record;
 273    pragma Convention (C, stack_t);
 274
 275    function sigaltstack
 276      (ss  : not null access stack_t;
 277       oss : access stack_t) return int;
 278    pragma Import (C, sigaltstack, "sigaltstack");
 279
 280    Alternate_Stack : aliased System.Address;
 281    --  This is a dummy definition, never used (Alternate_Stack_Size is null)
 282
 283    Alternate_Stack_Size : constant := 0;
 284    --  No alternate signal stack is used on this platform
 285
 286    Stack_Base_Available : constant Boolean := False;
 287    --  Indicates whether the stack base is available on this target
 288
 289    function Get_Stack_Base (thread : pthread_t) return Address;
 290    pragma Inline (Get_Stack_Base);
 291    --  Returns the stack base of the specified thread. Only call this function
 292    --  when Stack_Base_Available is True.
 293
 294    function Get_Page_Size return size_t;
 295    function Get_Page_Size return Address;
 296    pragma Import (C, Get_Page_Size, "getpagesize");
 297    --  Returns the size of a page
 298
 299    PROT_NONE  : constant := 0;
 300    PROT_READ  : constant := 1;
 301    PROT_WRITE : constant := 2;
 302    PROT_EXEC  : constant := 4;
 303    PROT_ALL   : constant := PROT_READ + PROT_WRITE + PROT_EXEC;
 304    PROT_ON    : constant := PROT_READ;
 305    PROT_OFF   : constant := PROT_ALL;
 306
 307    function mprotect (addr : Address; len : size_t; prot : int) return int;
 308    pragma Import (C, mprotect);
 309
 310    ---------------------------------------
 311    -- Nonstandard Thread Initialization --
 312    ---------------------------------------
 313
 314    procedure pthread_init;
 315    --  This is a dummy procedure to share some GNULLI files
 316
 317    -------------------------
 318    -- POSIX.1c  Section 3 --
 319    -------------------------
 320
 321    function sigwait
 322      (set : access sigset_t;
 323       sig : access Signal) return int;
 324    pragma Import (C, sigwait, "__posix_sigwait");
 325
 326    function pthread_kill
 327      (thread : pthread_t;
 328       sig    : Signal) return int;
 329    pragma Import (C, pthread_kill, "pthread_kill");
 330
 331    function pthread_sigmask
 332      (how  : int;
 333       set  : access sigset_t;
 334       oset : access sigset_t) return int;
 335    pragma Import (C, pthread_sigmask, "pthread_sigmask");
 336
 337    --------------------------
 338    -- POSIX.1c  Section 11 --
 339    --------------------------
 340
 341    function pthread_mutexattr_init
 342      (attr : access pthread_mutexattr_t) return int;
 343    pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
 344
 345    function pthread_mutexattr_destroy
 346      (attr : access pthread_mutexattr_t) return int;
 347    pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
 348
 349    function pthread_mutex_init
 350      (mutex : access pthread_mutex_t;
 351       attr  : access pthread_mutexattr_t) return int;
 352    pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
 353
 354    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 355    pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
 356
 357    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 358    pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
 359
 360    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 361    pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
 362
 363    function pthread_condattr_init
 364      (attr : access pthread_condattr_t) return int;
 365    pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
 366
 367    function pthread_condattr_destroy
 368      (attr : access pthread_condattr_t) return int;
 369    pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
 370
 371    function pthread_cond_init
 372      (cond : access pthread_cond_t;
 373       attr : access pthread_condattr_t) return int;
 374    pragma Import (C, pthread_cond_init, "pthread_cond_init");
 375
 376    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 377    pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
 378
 379    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 380    pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
 381
 382    function pthread_cond_wait
 383      (cond  : access pthread_cond_t;
 384       mutex : access pthread_mutex_t) return int;
 385    pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
 386
 387    function pthread_cond_timedwait
 388      (cond    : access pthread_cond_t;
 389       mutex   : access pthread_mutex_t;
 390       abstime : access timespec) return int;
 391    pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
 392
 393    Relative_Timed_Wait : constant Boolean := False;
 394    --  pthread_cond_timedwait requires an absolute delay time
 395
 396    --------------------------
 397    -- POSIX.1c  Section 13 --
 398    --------------------------
 399
 400    PTHREAD_PRIO_NONE    : constant := 0;
 401    PTHREAD_PRIO_INHERIT : constant := 16#10#;
 402    PTHREAD_PRIO_PROTECT : constant := 16#20#;
 403
 404    function pthread_mutexattr_setprotocol
 405      (attr     : access pthread_mutexattr_t;
 406       protocol : int) return int;
 407    pragma Import (C, pthread_mutexattr_setprotocol);
 408
 409    function pthread_mutexattr_setprioceiling
 410      (attr        : access pthread_mutexattr_t;
 411       prioceiling : int) return int;
 412    pragma Import (C, pthread_mutexattr_setprioceiling);
 413
 414    type Array_8_Int is array (0 .. 7) of int;
 415    type struct_sched_param is record
 416       sched_priority : int;
 417       sched_pad      : Array_8_Int;
 418    end record;
 419
 420    function pthread_setschedparam
 421      (thread : pthread_t;
 422       policy : int;
 423       param  : access struct_sched_param) return int;
 424    pragma Import (C, pthread_setschedparam, "pthread_setschedparam");
 425
 426    function pthread_attr_setscope
 427      (attr            : access pthread_attr_t;
 428       contentionscope : int) return int;
 429    pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
 430
 431    function pthread_attr_setinheritsched
 432      (attr         : access pthread_attr_t;
 433       inheritsched : int) return int;
 434    pragma Import (C, pthread_attr_setinheritsched);
 435
 436    function pthread_attr_setschedpolicy
 437      (attr   : access pthread_attr_t;
 438       policy : int) return int;
 439    pragma Import (C, pthread_attr_setschedpolicy);
 440
 441    function sched_yield return int;
 442    pragma Import (C, sched_yield, "sched_yield");
 443
 444    ---------------------------
 445    -- P1003.1c - Section 16 --
 446    ---------------------------
 447
 448    function pthread_attr_init (attributes : access pthread_attr_t) return int;
 449    pragma Import (C, pthread_attr_init, "pthread_attr_init");
 450
 451    function pthread_attr_destroy
 452      (attributes : access pthread_attr_t) return int;
 453    pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
 454
 455    function pthread_attr_setdetachstate
 456      (attr        : access pthread_attr_t;
 457       detachstate : int) return int;
 458    pragma Import (C, pthread_attr_setdetachstate);
 459
 460    function pthread_attr_setstacksize
 461      (attr      : access pthread_attr_t;
 462       stacksize : size_t) return int;
 463    pragma Import (C, pthread_attr_setstacksize);
 464
 465    function pthread_create
 466      (thread        : access pthread_t;
 467       attributes    : access pthread_attr_t;
 468       start_routine : Thread_Body;
 469       arg           : System.Address) return int;
 470    pragma Import (C, pthread_create, "pthread_create");
 471
 472    procedure pthread_exit (status : System.Address);
 473    pragma Import (C, pthread_exit, "pthread_exit");
 474
 475    function pthread_self return pthread_t;
 476    pragma Import (C, pthread_self, "pthread_self");
 477
 478    --------------------------
 479    -- POSIX.1c  Section 17 --
 480    --------------------------
 481
 482    function pthread_setspecific
 483      (key   : pthread_key_t;
 484       value : System.Address) return int;
 485    pragma Import (C, pthread_setspecific, "pthread_setspecific");
 486
 487    function pthread_getspecific (key : pthread_key_t) return System.Address;
 488    pragma Import (C, pthread_getspecific, "pthread_getspecific");
 489
 490    type destructor_pointer is access procedure (arg : System.Address);
 491    pragma Convention (C, destructor_pointer);
 492
 493    function pthread_key_create
 494      (key        : access pthread_key_t;
 495       destructor : destructor_pointer) return int;
 496    pragma Import (C, pthread_key_create, "pthread_key_create");
 497
 498 private
 499
 500    type array_type_1 is array (Integer range 0 .. 3) of unsigned_long;
 501    type sigset_t is record
 502       X_X_sigbits  : array_type_1;
 503    end record;
 504    pragma Convention (C, sigset_t);
 505
 506    type pid_t is new long;
 507
 508    type time_t is new long;
 509
 510    type timespec is record
 511       tv_sec  : time_t;
 512       tv_nsec : long;
 513    end record;
 514    pragma Convention (C, timespec);
 515
 516    type clockid_t is new int;
 517    CLOCK_REALTIME : constant clockid_t := 0;
 518
 519    type pthread_attr_t is record
 520       pthread_attrp : System.Address;
 521    end record;
 522    pragma Convention (C, pthread_attr_t);
 523
 524    type pthread_condattr_t is record
 525       pthread_condattrp : System.Address;
 526    end record;
 527    pragma Convention (C, pthread_condattr_t);
 528
 529    type pthread_mutexattr_t is record
 530       pthread_mutexattrp : System.Address;
 531    end record;
 532    pragma Convention (C, pthread_mutexattr_t);
 533
 534    type pthread_t is new unsigned;
 535
 536    type uint64_t is mod 2 ** 64;
 537
 538    type pthread_mutex_t is record
 539       pthread_mutex_flags   : uint64_t;
 540       pthread_mutex_owner64 : uint64_t;
 541       pthread_mutex_data    : uint64_t;
 542    end record;
 543    pragma Convention (C, pthread_mutex_t);
 544    type pthread_mutex_t_ptr is access pthread_mutex_t;
 545
 546    type pthread_cond_t is record
 547       pthread_cond_flags : uint64_t;
 548       pthread_cond_data  : uint64_t;
 549    end record;
 550    pragma Convention (C, pthread_cond_t);
 551
 552    type pthread_key_t is new unsigned;
 553
 554 end System.OS_Interface;