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) 1997-2020, 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 -------------------------- 430 -- POSIX.1c Section 13 -- 431 -------------------------- 432 433 PTHREAD_PRIO_NONE : constant := 0; 434 PTHREAD_PRIO_PROTECT : constant := 2; 435 PTHREAD_PRIO_INHERIT : constant := 1; 436 437 function pthread_mutexattr_setprotocol 438 (attr : access pthread_mutexattr_t; 439 protocol : int) return int; 440 pragma Import (C, pthread_mutexattr_setprotocol); 441 442 function pthread_mutexattr_setprioceiling 443 (attr : access pthread_mutexattr_t; 444 prioceiling : int) return int; 445 pragma Import 446 (C, pthread_mutexattr_setprioceiling, 447 "pthread_mutexattr_setprioceiling"); 448 449 type struct_sched_param is record 450 sched_priority : int; 451 ss_low_priority : int; 452 ss_replenish_period : timespec; 453 ss_initial_budget : timespec; 454 sched_ss_max_repl : int; 455 end record; 456 pragma Convention (C, struct_sched_param); 457 458 function pthread_setschedparam 459 (thread : pthread_t; 460 policy : int; 461 param : access struct_sched_param) return int; 462 pragma Import (C, pthread_setschedparam, "pthread_setschedparam"); 463 464 function pthread_attr_setscope 465 (attr : access pthread_attr_t; 466 contentionscope : int) return int; 467 pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope"); 468 469 function pthread_attr_setinheritsched 470 (attr : access pthread_attr_t; 471 inheritsched : int) return int; 472 pragma Import (C, pthread_attr_setinheritsched); 473 474 function pthread_attr_setschedpolicy 475 (attr : access pthread_attr_t; 476 policy : int) return int; 477 pragma Import (C, pthread_attr_setschedpolicy); 478 479 function pthread_attr_setschedparam 480 (attr : access pthread_attr_t; 481 sched_param : int) return int; 482 pragma Import (C, pthread_attr_setschedparam); 483 484 function sched_yield return int; 485 pragma Import (C, sched_yield, "sched_yield"); 486 487 --------------------------- 488 -- P1003.1c - Section 16 -- 489 --------------------------- 490 491 function pthread_attr_init (attributes : access pthread_attr_t) return int; 492 pragma Import (C, pthread_attr_init, "pthread_attr_init"); 493 494 function pthread_attr_destroy 495 (attributes : access pthread_attr_t) return int; 496 pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy"); 497 498 function pthread_attr_setdetachstate 499 (attr : access pthread_attr_t; 500 detachstate : int) return int; 501 pragma Import (C, pthread_attr_setdetachstate); 502 503 function pthread_attr_setstacksize 504 (attr : access pthread_attr_t; 505 stacksize : size_t) return int; 506 pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize"); 507 508 function pthread_create 509 (thread : access pthread_t; 510 attributes : access pthread_attr_t; 511 start_routine : Thread_Body; 512 arg : System.Address) return int; 513 pragma Import (C, pthread_create, "pthread_create"); 514 515 procedure pthread_exit (status : System.Address); 516 pragma Import (C, pthread_exit, "pthread_exit"); 517 518 function pthread_self return pthread_t; 519 pragma Import (C, pthread_self, "pthread_self"); 520 521 -------------------------- 522 -- POSIX.1c Section 17 -- 523 -------------------------- 524 525 function pthread_setspecific 526 (key : pthread_key_t; 527 value : System.Address) return int; 528 pragma Import (C, pthread_setspecific, "pthread_setspecific"); 529 530 function pthread_getspecific (key : pthread_key_t) return System.Address; 531 pragma Import (C, pthread_getspecific, "pthread_getspecific"); 532 533 type destructor_pointer is access procedure (arg : System.Address); 534 pragma Convention (C, destructor_pointer); 535 536 function pthread_key_create 537 (key : access pthread_key_t; 538 destructor : destructor_pointer) return int; 539 pragma Import (C, pthread_key_create, "pthread_key_create"); 540 541 ------------------------------------------------------------ 542 -- Binary Semaphore Wrapper to Support Interrupt Tasks -- 543 ------------------------------------------------------------ 544 545 type Binary_Semaphore_Id is new rtems_id; 546 547 function Binary_Semaphore_Create return Binary_Semaphore_Id; 548 pragma Import ( 549 C, 550 Binary_Semaphore_Create, 551 "__gnat_binary_semaphore_create"); 552 553 function Binary_Semaphore_Delete (ID : Binary_Semaphore_Id) return int; 554 pragma Import ( 555 C, 556 Binary_Semaphore_Delete, 557 "__gnat_binary_semaphore_delete"); 558 559 function Binary_Semaphore_Obtain (ID : Binary_Semaphore_Id) return int; 560 pragma Import ( 561 C, 562 Binary_Semaphore_Obtain, 563 "__gnat_binary_semaphore_obtain"); 564 565 function Binary_Semaphore_Release (ID : Binary_Semaphore_Id) return int; 566 pragma Import ( 567 C, 568 Binary_Semaphore_Release, 569 "__gnat_binary_semaphore_release"); 570 571 function Binary_Semaphore_Flush (ID : Binary_Semaphore_Id) return int; 572 pragma Import ( 573 C, 574 Binary_Semaphore_Flush, 575 "__gnat_binary_semaphore_flush"); 576 577 ------------------------------------------------------------ 578 -- Hardware Interrupt Wrappers to Support Interrupt Tasks -- 579 ------------------------------------------------------------ 580 581 type Interrupt_Handler is access procedure (parameter : System.Address); 582 pragma Convention (C, Interrupt_Handler); 583 type Interrupt_Vector is new System.Address; 584 585 function Interrupt_Connect 586 (vector : Interrupt_Vector; 587 handler : Interrupt_Handler; 588 parameter : System.Address := System.Null_Address) return int; 589 pragma Import (C, Interrupt_Connect, "__gnat_interrupt_connect"); 590 -- Use this to set up an user handler. The routine installs a 591 -- a user handler which is invoked after RTEMS has saved enough 592 -- context for a high-level language routine to be safely invoked. 593 594 function Interrupt_Vector_Get 595 (Vector : Interrupt_Vector) return Interrupt_Handler; 596 pragma Import (C, Interrupt_Vector_Get, "__gnat_interrupt_get"); 597 -- Use this to get the existing handler for later restoral. 598 599 procedure Interrupt_Vector_Set 600 (Vector : Interrupt_Vector; 601 Handler : Interrupt_Handler); 602 pragma Import (C, Interrupt_Vector_Set, "__gnat_interrupt_set"); 603 -- Use this to restore a handler obtained using Interrupt_Vector_Get. 604 605 function Interrupt_Number_To_Vector (intNum : int) return Interrupt_Vector; 606 -- Convert a logical interrupt number to the hardware interrupt vector 607 -- number used to connect the interrupt. 608 pragma Import ( 609 C, 610 Interrupt_Number_To_Vector, 611 "__gnat_interrupt_number_to_vector" 612 ); 613 614private 615 616 type sigset_t is new int; 617 618 type pid_t is new int; 619 620 type time_t is new Long_Long_Integer; 621 622 type timespec is record 623 tv_sec : time_t; 624 tv_nsec : long; 625 end record; 626 pragma Convention (C, timespec); 627 628 CLOCK_REALTIME : constant clockid_t := System.OS_Constants.CLOCK_REALTIME; 629 CLOCK_MONOTONIC : constant clockid_t := System.OS_Constants.CLOCK_MONOTONIC; 630 631 subtype char_array is Interfaces.C.char_array; 632 633 type pthread_attr_t is record 634 Data : char_array (1 .. OS_Constants.PTHREAD_ATTR_SIZE); 635 end record; 636 pragma Convention (C, pthread_attr_t); 637 for pthread_attr_t'Alignment use Interfaces.C.double'Alignment; 638 639 type pthread_condattr_t is record 640 Data : char_array (1 .. OS_Constants.PTHREAD_CONDATTR_SIZE); 641 end record; 642 pragma Convention (C, pthread_condattr_t); 643 for pthread_condattr_t'Alignment use Interfaces.C.double'Alignment; 644 645 type pthread_mutexattr_t is record 646 Data : char_array (1 .. OS_Constants.PTHREAD_MUTEXATTR_SIZE); 647 end record; 648 pragma Convention (C, pthread_mutexattr_t); 649 for pthread_mutexattr_t'Alignment use Interfaces.C.int'Alignment; 650 651 type pthread_rwlockattr_t is record 652 Data : char_array (1 .. OS_Constants.PTHREAD_RWLOCKATTR_SIZE); 653 end record; 654 pragma Convention (C, pthread_rwlockattr_t); 655 for pthread_rwlockattr_t'Alignment use Interfaces.C.int'Alignment; 656 657 type pthread_t is new rtems_id; 658 659 type pthread_mutex_t is record 660 Data : char_array (1 .. OS_Constants.PTHREAD_MUTEX_SIZE); 661 end record; 662 pragma Convention (C, pthread_mutex_t); 663 for pthread_mutex_t'Alignment use Interfaces.C.double'Alignment; 664 665 type pthread_rwlock_t is record 666 Data : char_array (1 .. OS_Constants.PTHREAD_RWLOCK_SIZE); 667 end record; 668 pragma Convention (C, pthread_rwlock_t); 669 for pthread_rwlock_t'Alignment use Interfaces.C.size_t'Alignment; 670 671 type pthread_cond_t is record 672 Data : char_array (1 .. OS_Constants.PTHREAD_COND_SIZE); 673 end record; 674 pragma Convention (C, pthread_cond_t); 675 for pthread_cond_t'Alignment use Interfaces.C.size_t'Alignment; 676 677 type pthread_key_t is new rtems_id; 678 679 No_Key : constant pthread_key_t := 0; 680 681end System.OS_Interface; 682