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