gcc/ada/s-osinte-rtems.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 --          Copyright (C) 1997-2008 Free Software Foundation, Inc.          --
  10 --                                                                          --
  11 -- GNARL is free software; you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  14 -- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNARL; see file COPYING.  If not, write --
  19 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- As a special exception,  if other files  instantiate  generics from this --
  23 -- unit, or you link  this unit with other files  to produce an executable, --
  24 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  25 -- covered  by the  GNU  General  Public  License.  This exception does not --
  26 -- however invalidate  any other reasons why  the executable file  might be --
  27 -- covered by the  GNU Public License.                                      --
  28 --                                                                          --
  29 -- GNARL was developed by the GNARL team at Florida State University.       --
  30 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  31 --                                                                          --
  32 -- The GNARL files that were developed for RTEMS are maintained by  On-Line --
  33 -- Applications Research Corporation (http://www.oarcorp.com)  in  coopera- --
  34 -- tion with Ada Core Technologies Inc. and Florida State University.       --
  35 --                                                                          --
  36 ------------------------------------------------------------------------------
  37
  38 --  This is the RTEMS version of this package.
  39 --
  40 --  RTEMS target names are of the form CPU-rtems.
  41 --  This implementation is designed to work on ALL RTEMS targets.
  42 --  The RTEMS implementation is primarily based upon the POSIX threads
  43 --  API but there are also bindings to GNAT/RTEMS support routines
  44 --  to insulate this code from C API specific details and, in some
  45 --  cases, obtain target architecture and BSP specific information
  46 --  that is unavailable at the time this package is built.
  47
  48 --  This package encapsulates all direct interfaces to OS services
  49 --  that are needed by children of System.
  50
  51 --  PLEASE DO NOT add any with-clauses to this package
  52 --  or remove the pragma Preelaborate.
  53 --  It is designed to be a bottom-level (leaf) package.
  54
  55 with Interfaces.C;
  56 package System.OS_Interface is
  57    pragma Preelaborate;
  58
  59    --  This interface assumes that "unsigned" is a 32-bit entity.  This
  60    --  will correspond to RTEMS object ids.
  61
  62    subtype rtems_id       is Interfaces.C.unsigned;
  63
  64    subtype int            is Interfaces.C.int;
  65    subtype short          is Interfaces.C.short;
  66    subtype long           is Interfaces.C.long;
  67    subtype unsigned       is Interfaces.C.unsigned;
  68    subtype unsigned_short is Interfaces.C.unsigned_short;
  69    subtype unsigned_long  is Interfaces.C.unsigned_long;
  70    subtype unsigned_char  is Interfaces.C.unsigned_char;
  71    subtype plain_char     is Interfaces.C.plain_char;
  72    subtype size_t         is Interfaces.C.size_t;
  73
  74    -----------
  75    -- Errno --
  76    -----------
  77
  78    function errno return int;
  79    pragma Import (C, errno, "__get_errno");
  80
  81    EAGAIN    : constant := 11;
  82    EINTR     : constant := 4;
  83    EINVAL    : constant := 22;
  84    ENOMEM    : constant := 12;
  85    ETIMEDOUT : constant := 116;
  86
  87    -------------
  88    -- Signals --
  89    -------------
  90
  91    Num_HW_Interrupts : constant := 256;
  92
  93    Max_HW_Interrupt : constant := Num_HW_Interrupts - 1;
  94    type HW_Interrupt is new int range 0 .. Max_HW_Interrupt;
  95
  96    Max_Interrupt : constant := Max_HW_Interrupt;
  97
  98    type Signal is new int range 0 .. Max_Interrupt;
  99
 100    SIGXCPU     : constant := 0; --  XCPU
 101    SIGHUP      : constant := 1; --  hangup
 102    SIGINT      : constant := 2; --  interrupt (rubout)
 103    SIGQUIT     : constant := 3; --  quit (ASCD FS)
 104    SIGILL      : constant := 4; --  illegal instruction (not reset)
 105    SIGTRAP     : constant := 5; --  trace trap (not reset)
 106    SIGIOT      : constant := 6; --  IOT instruction
 107    SIGABRT     : constant := 6; --  used by abort, replace SIGIOT in the future
 108    SIGEMT      : constant := 7; --  EMT instruction
 109    SIGFPE      : constant := 8; --  floating point exception
 110    SIGKILL     : constant := 9; --  kill (cannot be caught or ignored)
 111    SIGBUS      : constant := 10; --  bus error
 112    SIGSEGV     : constant := 11; --  segmentation violation
 113    SIGSYS      : constant := 12; --  bad argument to system call
 114    SIGPIPE     : constant := 13; --  write on a pipe with no one to read it
 115    SIGALRM     : constant := 14; --  alarm clock
 116    SIGTERM     : constant := 15; --  software termination signal from kill
 117    SIGUSR1     : constant := 16; --  user defined signal 1
 118    SIGUSR2     : constant := 17; --  user defined signal 2
 119
 120    SIGADAABORT : constant := SIGABRT;
 121
 122    type Signal_Set is array (Natural range <>) of Signal;
 123
 124    Unmasked    : constant Signal_Set := (SIGTRAP, SIGALRM, SIGEMT);
 125    Reserved    : constant Signal_Set := (1 .. 1 => SIGKILL);
 126
 127    type sigset_t is private;
 128
 129    function sigaddset (set : access sigset_t; sig : Signal) return int;
 130    pragma Import (C, sigaddset, "sigaddset");
 131
 132    function sigdelset (set : access sigset_t; sig : Signal) return int;
 133    pragma Import (C, sigdelset, "sigdelset");
 134
 135    function sigfillset (set : access sigset_t) return int;
 136    pragma Import (C, sigfillset, "sigfillset");
 137
 138    function sigismember (set : access sigset_t; sig : Signal) return int;
 139    pragma Import (C, sigismember, "sigismember");
 140
 141    function sigemptyset (set : access sigset_t) return int;
 142    pragma Import (C, sigemptyset, "sigemptyset");
 143
 144    type struct_sigaction is record
 145       sa_flags   : int;
 146       sa_mask    : sigset_t;
 147       sa_handler : System.Address;
 148    end record;
 149    pragma Convention (C, struct_sigaction);
 150    type struct_sigaction_ptr is access all struct_sigaction;
 151
 152    SA_SIGINFO  : constant := 16#02#;
 153
 154    SA_ONSTACK : constant := 16#00#;
 155    --  SA_ONSTACK is not defined on RTEMS, but it is referred to in the POSIX
 156    --  implementation of System.Interrupt_Management. Therefore we define a
 157    --  dummy value of zero here so that setting this flag is a nop.
 158
 159    SIG_BLOCK   : constant := 1;
 160    SIG_UNBLOCK : constant := 2;
 161    SIG_SETMASK : constant := 3;
 162
 163    SIG_DFL : constant := 0;
 164    SIG_IGN : constant := 1;
 165
 166    function sigaction
 167      (sig  : Signal;
 168       act  : struct_sigaction_ptr;
 169       oact : struct_sigaction_ptr) return int;
 170    pragma Import (C, sigaction, "sigaction");
 171
 172    ----------
 173    -- Time --
 174    ----------
 175
 176    Time_Slice_Supported : constant Boolean := True;
 177    --  Indicates whether time slicing is supported (i.e SCHED_RR is supported)
 178
 179    type timespec is private;
 180
 181    type clockid_t is private;
 182
 183    CLOCK_REALTIME : constant clockid_t;
 184
 185    function clock_gettime
 186      (clock_id : clockid_t;
 187       tp       : access timespec) return int;
 188    pragma Import (C, clock_gettime, "clock_gettime");
 189
 190    function To_Duration (TS : timespec) return Duration;
 191    pragma Inline (To_Duration);
 192
 193    function To_Timespec (D : Duration) return timespec;
 194    pragma Inline (To_Timespec);
 195
 196    type struct_timeval is private;
 197
 198    function To_Duration (TV : struct_timeval) return Duration;
 199    pragma Inline (To_Duration);
 200
 201    function To_Timeval (D : Duration) return struct_timeval;
 202    pragma Inline (To_Timeval);
 203
 204    -------------------------
 205    -- Priority Scheduling --
 206    -------------------------
 207
 208    SCHED_FIFO  : constant := 1;
 209    SCHED_RR    : constant := 2;
 210    SCHED_OTHER : constant := 0;
 211
 212    function To_Target_Priority
 213      (Prio : System.Any_Priority) return Interfaces.C.int;
 214    --  Maps System.Any_Priority to a POSIX priority
 215
 216    -------------
 217    -- Process --
 218    -------------
 219
 220    type pid_t is private;
 221
 222    function kill (pid : pid_t; sig : Signal) return int;
 223    pragma Import (C, kill, "kill");
 224
 225    function getpid return pid_t;
 226    pragma Import (C, getpid, "getpid");
 227
 228    ---------
 229    -- LWP --
 230    ---------
 231
 232    function lwp_self return System.Address;
 233    --  lwp_self does not exist on this thread library, revert to pthread_self
 234    --  which is the closest approximation (with getpid). This function is
 235    --  needed to share 7staprop.adb across POSIX-like targets.
 236    pragma Import (C, lwp_self, "pthread_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    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    No_Key : constant pthread_key_t;
 257
 258    PTHREAD_CREATE_DETACHED : constant := 0;
 259
 260    PTHREAD_SCOPE_PROCESS : constant := 0;
 261    PTHREAD_SCOPE_SYSTEM  : constant := 1;
 262
 263    -----------
 264    -- Stack --
 265    -----------
 266
 267    type stack_t is record
 268       ss_sp    : System.Address;
 269       ss_flags : int;
 270       ss_size  : size_t;
 271    end record;
 272    pragma Convention (C, stack_t);
 273
 274    function sigaltstack
 275      (ss  : not null access stack_t;
 276       oss : access stack_t) return int;
 277
 278    Alternate_Stack : aliased System.Address;
 279    --  This is a dummy definition, never used (Alternate_Stack_Size is null)
 280
 281    Alternate_Stack_Size : constant := 0;
 282    --  No alternate signal stack is used on this platform
 283
 284    Stack_Base_Available : constant Boolean := False;
 285    --  Indicates whether the stack base is available on this target.
 286    --  This allows us to share s-osinte.adb between all the FSU/RTEMS
 287    --  run time.
 288    --  Note that this value can only be true if pthread_t has a complete
 289    --  definition that corresponds exactly to the C header files.
 290
 291    function Get_Stack_Base (thread : pthread_t) return Address;
 292    pragma Inline (Get_Stack_Base);
 293    --  returns the stack base of the specified thread.
 294    --  Only call this function when Stack_Base_Available is True.
 295
 296    --  These two functions are only needed to share s-taprop.adb with
 297    --  FSU threads.
 298
 299    function Get_Page_Size return size_t;
 300    function Get_Page_Size return Address;
 301    --  returns the size of a page, or 0 if this is not relevant on this
 302    --  target (which is the case for RTEMS)
 303
 304    PROT_ON  : constant := 0;
 305    PROT_OFF : constant := 0;
 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    --  FSU_THREADS requires pthread_init, which is nonstandard
 316    --  and this should be invoked during the elaboration of s-taprop.adb
 317    --
 318    --  RTEMS does not require this so we provide an empty Ada body.
 319
 320    -------------------------
 321    -- POSIX.1c  Section 3 --
 322    -------------------------
 323
 324    function sigwait
 325      (set : access sigset_t;
 326       sig : access Signal) return int;
 327    pragma Import (C, sigwait, "sigwait");
 328
 329    function pthread_kill
 330      (thread : pthread_t;
 331       sig    : Signal) return int;
 332    pragma Import (C, pthread_kill, "pthread_kill");
 333
 334    function pthread_sigmask
 335      (how  : int;
 336       set  : access sigset_t;
 337       oset : access sigset_t) return int;
 338    pragma Import (C, pthread_sigmask, "pthread_sigmask");
 339
 340    ----------------------------
 341    --  POSIX.1c  Section 11  --
 342    ----------------------------
 343
 344    function pthread_mutexattr_init
 345      (attr : access pthread_mutexattr_t) return int;
 346    pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
 347
 348    function pthread_mutexattr_destroy
 349      (attr : access pthread_mutexattr_t) return int;
 350    pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
 351
 352    function pthread_mutex_init
 353      (mutex : access pthread_mutex_t;
 354       attr  : access pthread_mutexattr_t) return int;
 355    pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
 356
 357    function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
 358    pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
 359
 360    function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
 361    pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
 362
 363    function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
 364    pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
 365
 366    function pthread_condattr_init
 367      (attr : access pthread_condattr_t) return int;
 368    pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
 369
 370    function pthread_condattr_destroy
 371      (attr : access pthread_condattr_t) return int;
 372    pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
 373
 374    function pthread_cond_init
 375      (cond : access pthread_cond_t;
 376       attr : access pthread_condattr_t) return int;
 377    pragma Import (C, pthread_cond_init, "pthread_cond_init");
 378
 379    function pthread_cond_destroy (cond : access pthread_cond_t) return int;
 380    pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
 381
 382    function pthread_cond_signal (cond : access pthread_cond_t) return int;
 383    pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
 384
 385    function pthread_cond_wait
 386      (cond  : access pthread_cond_t;
 387       mutex : access pthread_mutex_t) return int;
 388    pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
 389
 390    function pthread_cond_timedwait
 391      (cond    : access pthread_cond_t;
 392       mutex   : access pthread_mutex_t;
 393       abstime : access timespec) return int;
 394    pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
 395
 396    Relative_Timed_Wait : constant Boolean := False;
 397    --  pthread_cond_timedwait requires an absolute delay time
 398
 399    --------------------------
 400    -- POSIX.1c  Section 13 --
 401    --------------------------
 402
 403    PTHREAD_PRIO_NONE    : constant := 0;
 404    PTHREAD_PRIO_PROTECT : constant := 2;
 405    PTHREAD_PRIO_INHERIT : constant := 1;
 406
 407    function pthread_mutexattr_setprotocol
 408      (attr     : access pthread_mutexattr_t;
 409       protocol : int) return int;
 410    pragma Import (C, pthread_mutexattr_setprotocol);
 411
 412    function pthread_mutexattr_setprioceiling
 413      (attr     : access pthread_mutexattr_t;
 414       prioceiling : int) return int;
 415    pragma Import
 416      (C, pthread_mutexattr_setprioceiling,
 417       "pthread_mutexattr_setprioceiling");
 418
 419    type struct_sched_param is record
 420       sched_priority      : int;
 421       ss_low_priority     : int;
 422       ss_replenish_period : timespec;
 423       ss_initial_budget   : timespec;
 424    end record;
 425    pragma Convention (C, struct_sched_param);
 426
 427    function pthread_setschedparam
 428      (thread : pthread_t;
 429       policy : int;
 430       param  : access struct_sched_param) return int;
 431    pragma Import (C, pthread_setschedparam, "pthread_setschedparam");
 432
 433    function pthread_attr_setscope
 434      (attr            : access pthread_attr_t;
 435       contentionscope : int) return int;
 436    pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
 437
 438    function pthread_attr_setinheritsched
 439      (attr         : access pthread_attr_t;
 440       inheritsched : int) return int;
 441    pragma Import (C, pthread_attr_setinheritsched);
 442
 443    function pthread_attr_setschedpolicy
 444      (attr   : access pthread_attr_t;
 445       policy : int) return int;
 446    pragma Import (C, pthread_attr_setschedpolicy);
 447
 448    function pthread_attr_setschedparam
 449      (attr        : access pthread_attr_t;
 450       sched_param : int) return int;
 451    pragma Import (C, pthread_attr_setschedparam);
 452
 453    function sched_yield return int;
 454    pragma Import (C, sched_yield, "sched_yield");
 455
 456    ---------------------------
 457    -- P1003.1c - Section 16 --
 458    ---------------------------
 459
 460    function pthread_attr_init (attributes : access pthread_attr_t) return int;
 461    pragma Import (C, pthread_attr_init, "pthread_attr_init");
 462
 463    function pthread_attr_destroy
 464      (attributes : access pthread_attr_t) return int;
 465    pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
 466
 467    function pthread_attr_setdetachstate
 468      (attr        : access pthread_attr_t;
 469       detachstate : int) return int;
 470    pragma Import (C, pthread_attr_setdetachstate);
 471
 472    function pthread_attr_setstacksize
 473      (attr      : access pthread_attr_t;
 474       stacksize : size_t) return int;
 475    pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize");
 476
 477    function pthread_create
 478      (thread        : access pthread_t;
 479       attributes    : access pthread_attr_t;
 480       start_routine : Thread_Body;
 481       arg           : System.Address) return int;
 482    pragma Import (C, pthread_create, "pthread_create");
 483
 484    procedure pthread_exit (status : System.Address);
 485    pragma Import (C, pthread_exit, "pthread_exit");
 486
 487    function pthread_self return pthread_t;
 488    pragma Import (C, pthread_self, "pthread_self");
 489
 490    --------------------------
 491    -- POSIX.1c  Section 17 --
 492    --------------------------
 493
 494    function pthread_setspecific
 495      (key   : pthread_key_t;
 496       value : System.Address) return int;
 497    pragma Import (C, pthread_setspecific, "pthread_setspecific");
 498
 499    function pthread_getspecific (key : pthread_key_t) return System.Address;
 500    pragma Import (C, pthread_getspecific, "pthread_getspecific");
 501
 502    type destructor_pointer is access procedure (arg : System.Address);
 503    pragma Convention (C, destructor_pointer);
 504
 505    function pthread_key_create
 506      (key        : access pthread_key_t;
 507       destructor : destructor_pointer) return int;
 508    pragma Import (C, pthread_key_create, "pthread_key_create");
 509
 510    ------------------------------------------------------------
 511    --   Binary Semaphore Wrapper to Support Interrupt Tasks  --
 512    ------------------------------------------------------------
 513
 514    type Binary_Semaphore_Id is new rtems_id;
 515
 516    function Binary_Semaphore_Create return Binary_Semaphore_Id;
 517    pragma Import (
 518       C,
 519       Binary_Semaphore_Create,
 520       "__gnat_binary_semaphore_create");
 521
 522    function Binary_Semaphore_Delete (ID : Binary_Semaphore_Id) return int;
 523    pragma Import (
 524       C,
 525       Binary_Semaphore_Delete,
 526       "__gnat_binary_semaphore_delete");
 527
 528    function Binary_Semaphore_Obtain (ID : Binary_Semaphore_Id) return int;
 529    pragma Import (
 530       C,
 531       Binary_Semaphore_Obtain,
 532       "__gnat_binary_semaphore_obtain");
 533
 534    function Binary_Semaphore_Release (ID : Binary_Semaphore_Id) return int;
 535    pragma Import (
 536       C,
 537       Binary_Semaphore_Release,
 538       "__gnat_binary_semaphore_release");
 539
 540    function Binary_Semaphore_Flush (ID : Binary_Semaphore_Id) return int;
 541    pragma Import (
 542       C,
 543       Binary_Semaphore_Flush,
 544       "__gnat_binary_semaphore_flush");
 545
 546    ------------------------------------------------------------
 547    -- Hardware Interrupt Wrappers to Support Interrupt Tasks --
 548    ------------------------------------------------------------
 549
 550    type Interrupt_Handler is access procedure (parameter : System.Address);
 551    pragma Convention (C, Interrupt_Handler);
 552    type Interrupt_Vector is new System.Address;
 553
 554    function Interrupt_Connect
 555      (vector    : Interrupt_Vector;
 556       handler   : Interrupt_Handler;
 557       parameter : System.Address := System.Null_Address) return int;
 558    pragma Import (C, Interrupt_Connect, "__gnat_interrupt_connect");
 559    --  Use this to set up an user handler. The routine installs a
 560    --  a user handler which is invoked after RTEMS has saved enough
 561    --  context for a high-level language routine to be safely invoked.
 562
 563    function Interrupt_Vector_Get
 564      (Vector : Interrupt_Vector) return Interrupt_Handler;
 565    pragma Import (C, Interrupt_Vector_Get, "__gnat_interrupt_get");
 566    --  Use this to get the existing handler for later restoral.
 567
 568    procedure Interrupt_Vector_Set
 569      (Vector  : Interrupt_Vector;
 570       Handler : Interrupt_Handler);
 571    pragma Import (C, Interrupt_Vector_Set, "__gnat_interrupt_set");
 572    --  Use this to restore a handler obtained using Interrupt_Vector_Get.
 573
 574    function Interrupt_Number_To_Vector (intNum : int) return Interrupt_Vector;
 575    --  Convert a logical interrupt number to the hardware interrupt vector
 576    --  number used to connect the interrupt.
 577    pragma Import (
 578       C,
 579       Interrupt_Number_To_Vector,
 580       "__gnat_interrupt_number_to_vector"
 581    );
 582
 583 private
 584
 585    type sigset_t is new int;
 586
 587    type pid_t is new int;
 588
 589    type time_t is new long;
 590
 591    type timespec is record
 592       tv_sec  : time_t;
 593       tv_nsec : long;
 594    end record;
 595    pragma Convention (C, timespec);
 596
 597    type clockid_t is new rtems_id;
 598    CLOCK_REALTIME : constant clockid_t := 1;
 599
 600    type struct_timeval is record
 601       tv_sec  : int;
 602       tv_usec : int;
 603    end record;
 604    pragma Convention (C, struct_timeval);
 605
 606    type pthread_attr_t is record
 607       is_initialized  : int;
 608       stackaddr       : System.Address;
 609       stacksize       : int;
 610       contentionscope : int;
 611       inheritsched    : int;
 612       schedpolicy     : int;
 613       schedparam      : struct_sched_param;
 614       cputime_clocked_allowed : int;
 615       detatchstate    : int;
 616    end record;
 617    pragma Convention (C, pthread_attr_t);
 618
 619    type pthread_condattr_t is record
 620       flags           : int;
 621       process_shared  : int;
 622    end record;
 623    pragma Convention (C, pthread_condattr_t);
 624
 625    type pthread_mutexattr_t is record
 626       is_initialized  : int;
 627       process_shared  : int;
 628       prio_ceiling    : int;
 629       protocol        : int;
 630       recursive       : int;
 631    end record;
 632    pragma Convention (C, pthread_mutexattr_t);
 633
 634    type pthread_t is new rtems_id;
 635
 636    type pthread_mutex_t is new rtems_id;
 637
 638    type pthread_cond_t is new rtems_id;
 639
 640    type pthread_key_t is new rtems_id;
 641
 642    No_Key : constant pthread_key_t := 0;
 643
 644 end System.OS_Interface;