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) 1997-2016 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 3, or (at your option) any later ver- -- 14-- sion. GNAT 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. -- 17-- -- 18-- As a special exception under Section 7 of GPL version 3, you are granted -- 19-- additional permissions described in the GCC Runtime Library Exception, -- 20-- version 3.1, as published by the Free Software Foundation. -- 21-- -- 22-- You should have received a copy of the GNU General Public License and -- 23-- a copy of the GCC Runtime Library Exception along with this program; -- 24-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- 25-- <http://www.gnu.org/licenses/>. -- 26-- -- 27-- GNARL was developed by the GNARL team at Florida State University. -- 28-- Extensive contributions were provided by Ada Core Technologies Inc. -- 29-- -- 30-- The GNARL files that were developed for RTEMS are maintained by On-Line -- 31-- Applications Research Corporation (http://www.oarcorp.com) in coopera- -- 32-- tion with Ada Core Technologies Inc. and Florida State University. -- 33-- -- 34------------------------------------------------------------------------------ 35 36-- This is the RTEMS version of this package. 37-- 38-- RTEMS target names are of the form CPU-rtems. 39-- This implementation is designed to work on ALL RTEMS targets. 40-- The RTEMS implementation is primarily based upon the POSIX threads 41-- API but there are also bindings to GNAT/RTEMS support routines 42-- to insulate this code from C API specific details and, in some 43-- cases, obtain target architecture and BSP specific information 44-- that is unavailable at the time this package is built. 45 46-- This package encapsulates all direct interfaces to OS services 47-- that are needed by children of System. 48 49-- PLEASE DO NOT add any with-clauses to this package 50-- or remove the pragma Preelaborate. 51-- It is designed to be a bottom-level (leaf) package. 52 53with Interfaces.C; 54with System.OS_Constants; 55 56package 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 char is Interfaces.C.char; 66 subtype short is Interfaces.C.short; 67 subtype long is Interfaces.C.long; 68 subtype unsigned is Interfaces.C.unsigned; 69 subtype unsigned_short is Interfaces.C.unsigned_short; 70 subtype unsigned_long is Interfaces.C.unsigned_long; 71 subtype unsigned_char is Interfaces.C.unsigned_char; 72 subtype plain_char is Interfaces.C.plain_char; 73 subtype size_t is Interfaces.C.size_t; 74 ----------- 75 -- Errno -- 76 ----------- 77 78 function errno return int; 79 pragma Import (C, errno, "__get_errno"); 80 81 EAGAIN : constant := System.OS_Constants.EAGAIN; 82 EINTR : constant := System.OS_Constants.EINTR; 83 EINVAL : constant := System.OS_Constants.EINVAL; 84 ENOMEM : constant := System.OS_Constants.ENOMEM; 85 ETIMEDOUT : constant := System.OS_Constants.ETIMEDOUT; 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 new int; 182 183 CLOCK_REALTIME : constant clockid_t; 184 CLOCK_MONOTONIC : constant clockid_t; 185 186 function clock_gettime 187 (clock_id : clockid_t; 188 tp : access timespec) return int; 189 pragma Import (C, clock_gettime, "clock_gettime"); 190 191 function clock_getres 192 (clock_id : clockid_t; 193 res : access timespec) return int; 194 pragma Import (C, clock_getres, "clock_getres"); 195 196 function To_Duration (TS : timespec) return Duration; 197 pragma Inline (To_Duration); 198 199 function To_Timespec (D : Duration) return timespec; 200 pragma Inline (To_Timespec); 201 202 ------------------------- 203 -- Priority Scheduling -- 204 ------------------------- 205 206 SCHED_FIFO : constant := 1; 207 SCHED_RR : constant := 2; 208 SCHED_OTHER : constant := 0; 209 210 function To_Target_Priority 211 (Prio : System.Any_Priority) return Interfaces.C.int; 212 -- Maps System.Any_Priority to a POSIX priority 213 214 ------------- 215 -- Process -- 216 ------------- 217 218 type pid_t is private; 219 220 function kill (pid : pid_t; sig : Signal) return int; 221 pragma Import (C, kill, "kill"); 222 223 function getpid return pid_t; 224 pragma Import (C, getpid, "getpid"); 225 226 --------- 227 -- LWP -- 228 --------- 229 230 function lwp_self return System.Address; 231 -- lwp_self does not exist on this thread library, revert to pthread_self 232 -- which is the closest approximation (with getpid). This function is 233 -- needed to share 7staprop.adb across POSIX-like targets. 234 pragma Import (C, lwp_self, "pthread_self"); 235 236 ------------- 237 -- Threads -- 238 ------------- 239 240 type Thread_Body is access 241 function (arg : System.Address) return System.Address; 242 pragma Convention (C, Thread_Body); 243 244 type pthread_t is private; 245 subtype Thread_Id is pthread_t; 246 247 type pthread_mutex_t is limited private; 248 type pthread_rwlock_t is limited private; 249 type pthread_cond_t is limited private; 250 type pthread_attr_t is limited private; 251 type pthread_mutexattr_t is limited private; 252 type pthread_rwlockattr_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 int; 300 pragma Import (C, Get_Page_Size, "getpagesize"); 301 -- Returns the size of a page 302 303 PROT_ON : constant := 0; 304 PROT_OFF : constant := 0; 305 306 function mprotect (addr : Address; len : size_t; prot : int) return int; 307 pragma Import (C, mprotect); 308 309 ----------------------------------------- 310 -- Nonstandard Thread Initialization -- 311 ----------------------------------------- 312 313 procedure pthread_init; 314 -- FSU_THREADS requires pthread_init, which is nonstandard 315 -- and this should be invoked during the elaboration of s-taprop.adb 316 -- 317 -- RTEMS does not require this so we provide an empty Ada body. 318 319 ------------------------- 320 -- POSIX.1c Section 3 -- 321 ------------------------- 322 323 function sigwait 324 (set : access sigset_t; 325 sig : access Signal) return int; 326 pragma Import (C, sigwait, "sigwait"); 327 328 function pthread_kill 329 (thread : pthread_t; 330 sig : Signal) return int; 331 pragma Import (C, pthread_kill, "pthread_kill"); 332 333 function pthread_sigmask 334 (how : int; 335 set : access sigset_t; 336 oset : access sigset_t) return int; 337 pragma Import (C, pthread_sigmask, "pthread_sigmask"); 338 339 ---------------------------- 340 -- POSIX.1c Section 11 -- 341 ---------------------------- 342 343 function pthread_mutexattr_init 344 (attr : access pthread_mutexattr_t) return int; 345 pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init"); 346 347 function pthread_mutexattr_destroy 348 (attr : access pthread_mutexattr_t) return int; 349 pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy"); 350 351 function pthread_mutex_init 352 (mutex : access pthread_mutex_t; 353 attr : access pthread_mutexattr_t) return int; 354 pragma Import (C, pthread_mutex_init, "pthread_mutex_init"); 355 356 function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int; 357 pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy"); 358 359 function pthread_mutex_lock (mutex : access pthread_mutex_t) return int; 360 pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock"); 361 362 function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int; 363 pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock"); 364 365 function pthread_rwlockattr_init 366 (attr : access pthread_rwlockattr_t) return int; 367 pragma Import (C, pthread_rwlockattr_init, "pthread_rwlockattr_init"); 368 369 function pthread_rwlockattr_destroy 370 (attr : access pthread_rwlockattr_t) return int; 371 pragma Import (C, pthread_rwlockattr_destroy, "pthread_rwlockattr_destroy"); 372 373 PTHREAD_RWLOCK_PREFER_READER_NP : constant := 0; 374 PTHREAD_RWLOCK_PREFER_WRITER_NP : constant := 1; 375 PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP : constant := 2; 376 377 function pthread_rwlockattr_setkind_np 378 (attr : access pthread_rwlockattr_t; 379 pref : int) return int; 380 381 function pthread_rwlock_init 382 (mutex : access pthread_rwlock_t; 383 attr : access pthread_rwlockattr_t) return int; 384 pragma Import (C, pthread_rwlock_init, "pthread_rwlock_init"); 385 386 function pthread_rwlock_destroy 387 (mutex : access pthread_rwlock_t) return int; 388 pragma Import (C, pthread_rwlock_destroy, "pthread_rwlock_destroy"); 389 390 function pthread_rwlock_rdlock (mutex : access pthread_rwlock_t) return int; 391 pragma Import (C, pthread_rwlock_rdlock, "pthread_rwlock_rdlock"); 392 393 function pthread_rwlock_wrlock (mutex : access pthread_rwlock_t) return int; 394 pragma Import (C, pthread_rwlock_wrlock, "pthread_rwlock_wrlock"); 395 396 function pthread_rwlock_unlock (mutex : access pthread_rwlock_t) return int; 397 pragma Import (C, pthread_rwlock_unlock, "pthread_rwlock_unlock"); 398 399 function pthread_condattr_init 400 (attr : access pthread_condattr_t) return int; 401 pragma Import (C, pthread_condattr_init, "pthread_condattr_init"); 402 403 function pthread_condattr_destroy 404 (attr : access pthread_condattr_t) return int; 405 pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy"); 406 407 function pthread_cond_init 408 (cond : access pthread_cond_t; 409 attr : access pthread_condattr_t) return int; 410 pragma Import (C, pthread_cond_init, "pthread_cond_init"); 411 412 function pthread_cond_destroy (cond : access pthread_cond_t) return int; 413 pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy"); 414 415 function pthread_cond_signal (cond : access pthread_cond_t) return int; 416 pragma Import (C, pthread_cond_signal, "pthread_cond_signal"); 417 418 function pthread_cond_wait 419 (cond : access pthread_cond_t; 420 mutex : access pthread_mutex_t) return int; 421 pragma Import (C, pthread_cond_wait, "pthread_cond_wait"); 422 423 function pthread_cond_timedwait 424 (cond : access pthread_cond_t; 425 mutex : access pthread_mutex_t; 426 abstime : access timespec) return int; 427 pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait"); 428 429 Relative_Timed_Wait : constant Boolean := False; 430 -- pthread_cond_timedwait requires an absolute delay time 431 432 -------------------------- 433 -- POSIX.1c Section 13 -- 434 -------------------------- 435 436 PTHREAD_PRIO_NONE : constant := 0; 437 PTHREAD_PRIO_PROTECT : constant := 2; 438 PTHREAD_PRIO_INHERIT : constant := 1; 439 440 function pthread_mutexattr_setprotocol 441 (attr : access pthread_mutexattr_t; 442 protocol : int) return int; 443 pragma Import (C, pthread_mutexattr_setprotocol); 444 445 function pthread_mutexattr_setprioceiling 446 (attr : access pthread_mutexattr_t; 447 prioceiling : int) return int; 448 pragma Import 449 (C, pthread_mutexattr_setprioceiling, 450 "pthread_mutexattr_setprioceiling"); 451 452 type struct_sched_param is record 453 sched_priority : int; 454 ss_low_priority : int; 455 ss_replenish_period : timespec; 456 ss_initial_budget : timespec; 457 sched_ss_max_repl : int; 458 end record; 459 pragma Convention (C, struct_sched_param); 460 461 function pthread_setschedparam 462 (thread : pthread_t; 463 policy : int; 464 param : access struct_sched_param) return int; 465 pragma Import (C, pthread_setschedparam, "pthread_setschedparam"); 466 467 function pthread_attr_setscope 468 (attr : access pthread_attr_t; 469 contentionscope : int) return int; 470 pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope"); 471 472 function pthread_attr_setinheritsched 473 (attr : access pthread_attr_t; 474 inheritsched : int) return int; 475 pragma Import (C, pthread_attr_setinheritsched); 476 477 function pthread_attr_setschedpolicy 478 (attr : access pthread_attr_t; 479 policy : int) return int; 480 pragma Import (C, pthread_attr_setschedpolicy); 481 482 function pthread_attr_setschedparam 483 (attr : access pthread_attr_t; 484 sched_param : int) return int; 485 pragma Import (C, pthread_attr_setschedparam); 486 487 function sched_yield return int; 488 pragma Import (C, sched_yield, "sched_yield"); 489 490 --------------------------- 491 -- P1003.1c - Section 16 -- 492 --------------------------- 493 494 function pthread_attr_init (attributes : access pthread_attr_t) return int; 495 pragma Import (C, pthread_attr_init, "pthread_attr_init"); 496 497 function pthread_attr_destroy 498 (attributes : access pthread_attr_t) return int; 499 pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy"); 500 501 function pthread_attr_setdetachstate 502 (attr : access pthread_attr_t; 503 detachstate : int) return int; 504 pragma Import (C, pthread_attr_setdetachstate); 505 506 function pthread_attr_setstacksize 507 (attr : access pthread_attr_t; 508 stacksize : size_t) return int; 509 pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize"); 510 511 function pthread_create 512 (thread : access pthread_t; 513 attributes : access pthread_attr_t; 514 start_routine : Thread_Body; 515 arg : System.Address) return int; 516 pragma Import (C, pthread_create, "pthread_create"); 517 518 procedure pthread_exit (status : System.Address); 519 pragma Import (C, pthread_exit, "pthread_exit"); 520 521 function pthread_self return pthread_t; 522 pragma Import (C, pthread_self, "pthread_self"); 523 524 -------------------------- 525 -- POSIX.1c Section 17 -- 526 -------------------------- 527 528 function pthread_setspecific 529 (key : pthread_key_t; 530 value : System.Address) return int; 531 pragma Import (C, pthread_setspecific, "pthread_setspecific"); 532 533 function pthread_getspecific (key : pthread_key_t) return System.Address; 534 pragma Import (C, pthread_getspecific, "pthread_getspecific"); 535 536 type destructor_pointer is access procedure (arg : System.Address); 537 pragma Convention (C, destructor_pointer); 538 539 function pthread_key_create 540 (key : access pthread_key_t; 541 destructor : destructor_pointer) return int; 542 pragma Import (C, pthread_key_create, "pthread_key_create"); 543 544 ------------------------------------------------------------ 545 -- Binary Semaphore Wrapper to Support Interrupt Tasks -- 546 ------------------------------------------------------------ 547 548 type Binary_Semaphore_Id is new rtems_id; 549 550 function Binary_Semaphore_Create return Binary_Semaphore_Id; 551 pragma Import ( 552 C, 553 Binary_Semaphore_Create, 554 "__gnat_binary_semaphore_create"); 555 556 function Binary_Semaphore_Delete (ID : Binary_Semaphore_Id) return int; 557 pragma Import ( 558 C, 559 Binary_Semaphore_Delete, 560 "__gnat_binary_semaphore_delete"); 561 562 function Binary_Semaphore_Obtain (ID : Binary_Semaphore_Id) return int; 563 pragma Import ( 564 C, 565 Binary_Semaphore_Obtain, 566 "__gnat_binary_semaphore_obtain"); 567 568 function Binary_Semaphore_Release (ID : Binary_Semaphore_Id) return int; 569 pragma Import ( 570 C, 571 Binary_Semaphore_Release, 572 "__gnat_binary_semaphore_release"); 573 574 function Binary_Semaphore_Flush (ID : Binary_Semaphore_Id) return int; 575 pragma Import ( 576 C, 577 Binary_Semaphore_Flush, 578 "__gnat_binary_semaphore_flush"); 579 580 ------------------------------------------------------------ 581 -- Hardware Interrupt Wrappers to Support Interrupt Tasks -- 582 ------------------------------------------------------------ 583 584 type Interrupt_Handler is access procedure (parameter : System.Address); 585 pragma Convention (C, Interrupt_Handler); 586 type Interrupt_Vector is new System.Address; 587 588 function Interrupt_Connect 589 (vector : Interrupt_Vector; 590 handler : Interrupt_Handler; 591 parameter : System.Address := System.Null_Address) return int; 592 pragma Import (C, Interrupt_Connect, "__gnat_interrupt_connect"); 593 -- Use this to set up an user handler. The routine installs a 594 -- a user handler which is invoked after RTEMS has saved enough 595 -- context for a high-level language routine to be safely invoked. 596 597 function Interrupt_Vector_Get 598 (Vector : Interrupt_Vector) return Interrupt_Handler; 599 pragma Import (C, Interrupt_Vector_Get, "__gnat_interrupt_get"); 600 -- Use this to get the existing handler for later restoral. 601 602 procedure Interrupt_Vector_Set 603 (Vector : Interrupt_Vector; 604 Handler : Interrupt_Handler); 605 pragma Import (C, Interrupt_Vector_Set, "__gnat_interrupt_set"); 606 -- Use this to restore a handler obtained using Interrupt_Vector_Get. 607 608 function Interrupt_Number_To_Vector (intNum : int) return Interrupt_Vector; 609 -- Convert a logical interrupt number to the hardware interrupt vector 610 -- number used to connect the interrupt. 611 pragma Import ( 612 C, 613 Interrupt_Number_To_Vector, 614 "__gnat_interrupt_number_to_vector" 615 ); 616 617private 618 619 type sigset_t is new int; 620 621 type pid_t is new int; 622 623 type time_t is new long; 624 625 type timespec is record 626 tv_sec : time_t; 627 tv_nsec : long; 628 end record; 629 pragma Convention (C, timespec); 630 631 CLOCK_REALTIME : constant clockid_t := System.OS_Constants.CLOCK_REALTIME; 632 CLOCK_MONOTONIC : constant clockid_t := System.OS_Constants.CLOCK_MONOTONIC; 633 634 subtype char_array is Interfaces.C.char_array; 635 636 type pthread_attr_t is record 637 Data : char_array (1 .. OS_Constants.PTHREAD_ATTR_SIZE); 638 end record; 639 pragma Convention (C, pthread_attr_t); 640 for pthread_attr_t'Alignment use Interfaces.C.double'Alignment; 641 642 type pthread_condattr_t is record 643 Data : char_array (1 .. OS_Constants.PTHREAD_CONDATTR_SIZE); 644 end record; 645 pragma Convention (C, pthread_condattr_t); 646 for pthread_condattr_t'Alignment use Interfaces.C.double'Alignment; 647 648 type pthread_mutexattr_t is record 649 Data : char_array (1 .. OS_Constants.PTHREAD_MUTEXATTR_SIZE); 650 end record; 651 pragma Convention (C, pthread_mutexattr_t); 652 for pthread_mutexattr_t'Alignment use Interfaces.C.double'Alignment; 653 654 type pthread_rwlockattr_t is record 655 Data : char_array (1 .. OS_Constants.PTHREAD_RWLOCKATTR_SIZE); 656 end record; 657 pragma Convention (C, pthread_rwlockattr_t); 658 for pthread_rwlockattr_t'Alignment use Interfaces.C.double'Alignment; 659 660 type pthread_t is new rtems_id; 661 662 type pthread_mutex_t is new rtems_id; 663 664 type pthread_rwlock_t is new rtems_id; 665 666 type pthread_cond_t is new rtems_id; 667 668 type pthread_key_t is new rtems_id; 669 670 No_Key : constant pthread_key_t := 0; 671 672end System.OS_Interface; 673