gcc/ada/s-osinte-hpux.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) 1995-2008, 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 HPUX 11.0 (Native THREADS) version of this package
  36
  37 --  This package encapsulates all direct interfaces to OS services that are
  38 --  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 Ada.Unchecked_Conversion;
  44
  45 with Interfaces.C;
  46
  47 package System.OS_Interface is
  48    pragma Preelaborate;
  49
  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 := 238;
  74
  75    -------------
  76    -- Signals --
  77    -------------
  78
  79    Max_Interrupt : constant := 44;
  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    SIGVTALRM  : constant := 20; --  virtual timer alarm
 105    SIGPROF    : constant := 21; --  profiling timer alarm
 106    SIGIO      : constant := 22; --  asynchronous I/O
 107    SIGPOLL    : constant := 22; --  pollable event occurred
 108    SIGWINCH   : constant := 23; --  window size change
 109    SIGSTOP    : constant := 24; --  stop (cannot be caught or ignored)
 110    SIGTSTP    : constant := 25; --  user stop requested from tty
 111    SIGCONT    : constant := 26; --  stopped process has been continued
 112    SIGTTIN    : constant := 27; --  background tty read attempted
 113    SIGTTOU    : constant := 28; --  background tty write attempted
 114    SIGURG     : constant := 29; --  urgent condition on IO channel
 115    SIGLOST    : constant := 30; --  remote lock lost  (NFS)
 116    SIGDIL     : constant := 32; --  DIL signal
 117    SIGXCPU    : constant := 33; --  CPU time limit exceeded (setrlimit)
 118    SIGXFSZ    : constant := 34; --  file size limit exceeded (setrlimit)
 119    SIGCANCEL  : constant := 35; --  used for pthread cancellation.
 120    SIGGFAULT  : constant := 36; --  Graphics framebuffer fault
 121
 122    SIGADAABORT : constant := SIGABRT;
 123    --  Note: on other targets, we usually use SIGABRT, but on HPUX, it
 124    --  appears that SIGABRT can't be used in sigwait(), so we use SIGTERM.
 125
 126    type Signal_Set is array (Natural range <>) of Signal;
 127
 128    Unmasked    : constant Signal_Set :=
 129      (SIGABRT, SIGPIPE, SIGBUS, SIGTRAP, SIGTTIN, SIGTTOU, SIGTSTP, SIGPROF,
 130       SIGALRM, SIGVTALRM, SIGIO, SIGCHLD);
 131
 132    Reserved    : constant Signal_Set := (SIGKILL, SIGSTOP);
 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 struct_sigaction is record
 152       sa_handler : System.Address;
 153       sa_mask    : sigset_t;
 154       sa_flags   : int;
 155    end record;
 156    pragma Convention (C, struct_sigaction);
 157    type struct_sigaction_ptr is access all struct_sigaction;
 158
 159    SA_SIGINFO : constant := 16#10#;
 160    SA_ONSTACK : constant := 16#01#;
 161
 162    SIG_BLOCK   : constant := 0;
 163    SIG_UNBLOCK : constant := 1;
 164    SIG_SETMASK : constant := 2;
 165
 166    SIG_DFL : constant := 0;
 167    SIG_IGN : constant := 1;
 168
 169    function sigaction
 170      (sig  : Signal;
 171       act  : struct_sigaction_ptr;
 172       oact : struct_sigaction_ptr) return int;
 173    pragma Import (C, sigaction, "sigaction");
 174
 175    ----------
 176    -- Time --
 177    ----------
 178
 179    Time_Slice_Supported : constant Boolean := True;
 180    --  Indicates whether time slicing is supported
 181
 182    type timespec is private;
 183
 184    type clockid_t is private;
 185
 186    CLOCK_REALTIME : constant clockid_t;
 187
 188    function clock_gettime
 189      (clock_id : clockid_t;
 190       tp       : access timespec) return int;
 191    pragma Import (C, clock_gettime, "clock_gettime");
 192
 193    function clock_getres
 194      (clock_id : clockid_t;
 195       res      : access timespec) return int;
 196    pragma Import (C, clock_getres, "clock_getres");
 197
 198    function To_Duration (TS : timespec) return Duration;
 199    pragma Inline (To_Duration);
 200
 201    function To_Timespec (D : Duration) return timespec;
 202    pragma Inline (To_Timespec);
 203
 204    type struct_timezone is record
 205       tz_minuteswest : int;
 206       tz_dsttime     : int;
 207    end record;
 208    pragma Convention (C, struct_timezone);
 209    type struct_timezone_ptr is access all struct_timezone;
 210
 211    type struct_timeval is private;
 212    --  This is needed on systems that do not have clock_gettime()
 213    --  but do have gettimeofday().
 214
 215    function To_Duration (TV : struct_timeval) return Duration;
 216    pragma Inline (To_Duration);
 217
 218    function To_Timeval (D : Duration) return struct_timeval;
 219    pragma Inline (To_Timeval);
 220
 221    -------------------------
 222    -- Priority Scheduling --
 223    -------------------------
 224
 225    SCHED_FIFO  : constant := 0;
 226    SCHED_RR    : constant := 1;
 227    SCHED_OTHER : constant := 2;
 228
 229    function To_Target_Priority
 230      (Prio : System.Any_Priority) return Interfaces.C.int;
 231    --  Maps System.Any_Priority to a POSIX priority
 232
 233    -------------
 234    -- Process --
 235    -------------
 236
 237    type pid_t is private;
 238
 239    function kill (pid : pid_t; sig : Signal) return int;
 240    pragma Import (C, kill, "kill");
 241
 242    function getpid return pid_t;
 243    pragma Import (C, getpid, "getpid");
 244
 245    ---------
 246    -- LWP --
 247    ---------
 248
 249    function lwp_self return System.Address;
 250    pragma Import (C, lwp_self, "_lwp_self");
 251
 252    -------------
 253    -- Threads --
 254    -------------
 255
 256    type Thread_Body is access
 257      function (arg : System.Address) return System.Address;
 258    pragma Convention (C, Thread_Body);
 259
 260    function Thread_Body_Access is new
 261      Ada.Unchecked_Conversion (System.Address, Thread_Body);
 262
 263    type pthread_t           is private;
 264    subtype Thread_Id        is pthread_t;
 265
 266    type pthread_mutex_t     is limited private;
 267    type pthread_cond_t      is limited private;
 268    type pthread_attr_t      is limited private;
 269    type pthread_mutexattr_t is limited private;
 270    type pthread_condattr_t  is limited private;
 271    type pthread_key_t       is private;
 272
 273    PTHREAD_CREATE_DETACHED : constant := 16#de#;
 274
 275    PTHREAD_SCOPE_PROCESS : constant := 2;
 276    PTHREAD_SCOPE_SYSTEM  : constant := 1;
 277
 278    -----------
 279    -- Stack --
 280    -----------
 281
 282    type stack_t is record
 283       ss_sp    : System.Address;
 284       ss_flags : int;
 285       ss_size  : size_t;
 286    end record;
 287    pragma Convention (C, stack_t);
 288
 289    function sigaltstack
 290      (ss  : not null access stack_t;
 291       oss : access stack_t) return int;
 292    pragma Import (C, sigaltstack, "sigaltstack");
 293
 294    Alternate_Stack : aliased System.Address;
 295    pragma Import (C, Alternate_Stack, "__gnat_alternate_stack");
 296    --  The alternate signal stack for stack overflows
 297
 298    Alternate_Stack_Size : constant := 16 * 1024;
 299    --  This must be in keeping with init.c:__gnat_alternate_stack
 300
 301    Stack_Base_Available : constant Boolean := False;
 302    --  Indicates whether the stack base is available on this target
 303
 304    function Get_Stack_Base (thread : pthread_t) return Address;
 305    pragma Inline (Get_Stack_Base);
 306    --  Returns the stack base of the specified thread. Only call this function
 307    --  when Stack_Base_Available is True.
 308
 309    function Get_Page_Size return size_t;
 310    function Get_Page_Size return Address;
 311    pragma Import (C, Get_Page_Size, "getpagesize");
 312    --  Returns the size of a page, or 0 if this is not relevant on this target
 313
 314    PROT_NONE  : constant := 0;
 315    PROT_READ  : constant := 1;
 316    PROT_WRITE : constant := 2;
 317    PROT_EXEC  : constant := 4;
 318    PROT_ALL   : constant := PROT_READ + PROT_WRITE + PROT_EXEC;
 319    PROT_ON    : constant := PROT_READ;
 320    PROT_OFF   : constant := PROT_ALL;
 321
 322    function mprotect (addr : Address; len : size_t; prot : int) return int;
 323    pragma Import (C, mprotect);
 324
 325    ---------------------------------------
 326    -- Nonstandard Thread Initialization --
 327    ---------------------------------------
 328
 329    procedure pthread_init;
 330    pragma Inline (pthread_init);
 331    --  This is a dummy procedure to share some GNULLI files
 332
 333    -------------------------
 334    -- POSIX.1c  Section 3 --
 335    -------------------------
 336
 337    function sigwait
 338      (set : access sigset_t;
 339       sig : access Signal) return int;
 340    pragma Import (C, sigwait, "sigwait");
 341
 342    function pthread_kill
 343      (thread : pthread_t;
 344       sig    : Signal) return int;
 345    pragma Import (C, pthread_kill, "pthread_kill");
 346
 347    function pthread_sigmask
 348      (how  : int;
 349       set  : access sigset_t;
 350       oset : access sigset_t) return int;
 351    pragma Import (C, pthread_sigmask, "pthread_sigmask");
 352
 353    --------------------------
 354    -- POSIX.1c  Section 11 --
 355    --------------------------
 356
 357    function pthread_mutexattr_init
 358      (attr : access pthread_mutexattr_t) return int;
 359    pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
 360
 361    function pthread_mutexattr_destroy
 362      (attr : access pthread_mutexattr_t) return int;
 363    pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
 364
 365    function pthread_mutex_init
 366      (mutex : access pthread_mutex_t;
 367       attr  : access pthread_mutexattr_t) return int;
 368    pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
 369
 370    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 371    pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
 372
 373    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 374    pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
 375
 376    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 377    pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
 378
 379    function pthread_condattr_init
 380      (attr : access pthread_condattr_t) return int;
 381    pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
 382
 383    function pthread_condattr_destroy
 384      (attr : access pthread_condattr_t) return int;
 385    pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
 386
 387    function pthread_cond_init
 388      (cond : access pthread_cond_t;
 389       attr : access pthread_condattr_t) return int;
 390    pragma Import (C, pthread_cond_init, "pthread_cond_init");
 391
 392    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 393    pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
 394
 395    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 396    pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
 397
 398    function pthread_cond_wait
 399      (cond  : access pthread_cond_t;
 400       mutex : access pthread_mutex_t) return int;
 401    pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
 402
 403    function pthread_cond_timedwait
 404      (cond    : access pthread_cond_t;
 405       mutex   : access pthread_mutex_t;
 406       abstime : access timespec) return int;
 407    pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
 408
 409    Relative_Timed_Wait : constant Boolean := False;
 410    --  pthread_cond_timedwait requires an absolute delay time
 411
 412    --------------------------
 413    -- POSIX.1c  Section 13 --
 414    --------------------------
 415
 416    PTHREAD_PRIO_NONE    : constant := 16#100#;
 417    PTHREAD_PRIO_PROTECT : constant := 16#200#;
 418    PTHREAD_PRIO_INHERIT : constant := 16#400#;
 419
 420    function pthread_mutexattr_setprotocol
 421      (attr     : access pthread_mutexattr_t;
 422       protocol : int) return int;
 423    pragma Import (C, pthread_mutexattr_setprotocol);
 424
 425    function pthread_mutexattr_setprioceiling
 426      (attr     : access pthread_mutexattr_t;
 427       prioceiling : int) return int;
 428    pragma Import (C, pthread_mutexattr_setprioceiling);
 429
 430    type Array_7_Int is array (0 .. 6) of int;
 431    type struct_sched_param is record
 432       sched_priority : int;
 433       sched_reserved : Array_7_Int;
 434    end record;
 435
 436    function pthread_setschedparam
 437      (thread : pthread_t;
 438       policy : int;
 439       param  : access struct_sched_param)
 440      return int;
 441    pragma Import (C, pthread_setschedparam, "pthread_setschedparam");
 442
 443    function pthread_attr_setscope
 444      (attr            : access pthread_attr_t;
 445       contentionscope : int) return int;
 446    pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
 447
 448    function pthread_attr_setinheritsched
 449      (attr         : access pthread_attr_t;
 450       inheritsched : int) return int;
 451    pragma Import (C, pthread_attr_setinheritsched);
 452
 453    function pthread_attr_setschedpolicy
 454      (attr   : access pthread_attr_t;
 455       policy : int) return int;
 456    pragma Import (C, pthread_attr_setschedpolicy);
 457
 458    function sched_yield return int;
 459    pragma Import (C, sched_yield, "sched_yield");
 460
 461    --------------------------
 462    -- P1003.1c  Section 16 --
 463    --------------------------
 464
 465    function pthread_attr_init
 466      (attributes : access pthread_attr_t) return int;
 467    pragma Import (C, pthread_attr_init, "__pthread_attr_init_system");
 468
 469    function pthread_attr_destroy
 470      (attributes : access pthread_attr_t) return int;
 471    pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
 472
 473    function pthread_attr_setdetachstate
 474      (attr        : access pthread_attr_t;
 475       detachstate : int) return int;
 476    pragma Import (C, pthread_attr_setdetachstate);
 477
 478    function pthread_attr_setstacksize
 479      (attr      : access pthread_attr_t;
 480       stacksize : size_t) return int;
 481    pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize");
 482
 483    function pthread_create
 484      (thread        : access pthread_t;
 485       attributes    : access pthread_attr_t;
 486       start_routine : Thread_Body;
 487       arg           : System.Address) return int;
 488    pragma Import (C, pthread_create, "__pthread_create_system");
 489
 490    procedure pthread_exit (status : System.Address);
 491    pragma Import (C, pthread_exit, "pthread_exit");
 492
 493    function pthread_self return pthread_t;
 494    pragma Import (C, pthread_self, "pthread_self");
 495
 496    --------------------------
 497    -- POSIX.1c  Section 17 --
 498    --------------------------
 499
 500    function pthread_setspecific
 501      (key   : pthread_key_t;
 502       value : System.Address) return int;
 503    pragma Import (C, pthread_setspecific, "pthread_setspecific");
 504
 505    function pthread_getspecific (key : pthread_key_t) return System.Address;
 506    pragma Import (C, pthread_getspecific, "pthread_getspecific");
 507
 508    type destructor_pointer is access procedure (arg : System.Address);
 509    pragma Convention (C, destructor_pointer);
 510
 511    function pthread_key_create
 512      (key        : access pthread_key_t;
 513       destructor : destructor_pointer) return int;
 514    pragma Import (C, pthread_key_create, "pthread_key_create");
 515
 516 private
 517
 518    type unsigned_int_array_8 is array (0 .. 7) of unsigned;
 519    type sigset_t is record
 520       sigset : unsigned_int_array_8;
 521    end record;
 522    pragma Convention (C_Pass_By_Copy, sigset_t);
 523
 524    type pid_t is new int;
 525
 526    type time_t is new long;
 527
 528    type timespec is record
 529       tv_sec  : time_t;
 530       tv_nsec : long;
 531    end record;
 532    pragma Convention (C, timespec);
 533
 534    type clockid_t is new int;
 535    CLOCK_REALTIME : constant clockid_t := 1;
 536
 537    type struct_timeval is record
 538       tv_sec  : time_t;
 539       tv_usec : time_t;
 540    end record;
 541    pragma Convention (C, struct_timeval);
 542
 543    type pthread_attr_t is new int;
 544    type pthread_condattr_t is new int;
 545    type pthread_mutexattr_t is new int;
 546    type pthread_t is new int;
 547
 548    type short_array is array (Natural range <>) of short;
 549    type int_array is array (Natural range <>) of int;
 550
 551    type pthread_mutex_t is record
 552       m_short : short_array (0 .. 1);
 553       m_int   : int;
 554       m_int1  : int_array (0 .. 3);
 555       m_pad   : int;
 556
 557       m_ptr : int;
 558       --  actually m_ptr is a void*, and on 32 bit ABI, m_pad is added so that
 559       --  this field takes 64 bits. On 64 bit ABI, m_pad is gone, and m_ptr is
 560       --  a 64 bit void*. Assume int'Size = 32.
 561
 562       m_int2   : int_array (0 .. 1);
 563       m_int3   : int_array (0 .. 3);
 564       m_short2 : short_array (0 .. 1);
 565       m_int4   : int_array (0 .. 4);
 566       m_int5   : int_array (0 .. 1);
 567    end record;
 568    for pthread_mutex_t'Alignment use System.Address'Alignment;
 569    pragma Convention (C, pthread_mutex_t);
 570
 571    type pthread_cond_t is record
 572       c_short : short_array (0 .. 1);
 573       c_int   : int;
 574       c_int1  : int_array (0 .. 3);
 575       m_pad   : int;
 576       m_ptr   : int;  --  see comment in pthread_mutex_t
 577       c_int2  : int_array (0 .. 1);
 578       c_int3  : int_array (0 .. 1);
 579       c_int4  : int_array (0 .. 1);
 580    end record;
 581    for pthread_cond_t'Alignment use System.Address'Alignment;
 582    pragma Convention (C, pthread_cond_t);
 583
 584    type pthread_key_t is new int;
 585
 586 end System.OS_Interface;