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) 1995-2012, Free Software Foundation, Inc. -- 11-- -- 12-- GNAT 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 3, or (at your option) any later ver- -- 15-- sion. GNAT 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. -- 18-- -- 19-- As a special exception under Section 7 of GPL version 3, you are granted -- 20-- additional permissions described in the GCC Runtime Library Exception, -- 21-- version 3.1, as published by the Free Software Foundation. -- 22-- -- 23-- You should have received a copy of the GNU General Public License and -- 24-- a copy of the GCC Runtime Library Exception along with this program; -- 25-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- 26-- <http://www.gnu.org/licenses/>. -- 27-- -- 28-- GNARL was developed by the GNARL team at Florida State University. -- 29-- Extensive contributions were provided by Ada Core Technologies, Inc. -- 30-- -- 31------------------------------------------------------------------------------ 32 33-- This is a GNU/Linux (GNU/LinuxThreads) version of this package 34 35-- This package encapsulates all direct interfaces to OS services 36-- that are needed by the tasking run-time (libgnarl). 37 38-- PLEASE DO NOT add any with-clauses to this package or remove the pragma 39-- Preelaborate. This package is designed to be a bottom-level (leaf) package. 40 41with Ada.Unchecked_Conversion; 42with Interfaces.C; 43with System.Linux; 44with System.OS_Constants; 45 46package System.OS_Interface is 47 pragma Preelaborate; 48 49 pragma Linker_Options ("-lpthread"); 50 51 subtype int is Interfaces.C.int; 52 subtype char is Interfaces.C.char; 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 := System.Linux.EAGAIN; 70 EINTR : constant := System.Linux.EINTR; 71 EINVAL : constant := System.Linux.EINVAL; 72 ENOMEM : constant := System.Linux.ENOMEM; 73 EPERM : constant := System.Linux.EPERM; 74 ETIMEDOUT : constant := System.Linux.ETIMEDOUT; 75 76 ------------- 77 -- Signals -- 78 ------------- 79 80 Max_Interrupt : constant := 63; 81 type Signal is new int range 0 .. Max_Interrupt; 82 for Signal'Size use int'Size; 83 84 SIGHUP : constant := System.Linux.SIGHUP; 85 SIGINT : constant := System.Linux.SIGINT; 86 SIGQUIT : constant := System.Linux.SIGQUIT; 87 SIGILL : constant := System.Linux.SIGILL; 88 SIGTRAP : constant := System.Linux.SIGTRAP; 89 SIGIOT : constant := System.Linux.SIGIOT; 90 SIGABRT : constant := System.Linux.SIGABRT; 91 SIGFPE : constant := System.Linux.SIGFPE; 92 SIGKILL : constant := System.Linux.SIGKILL; 93 SIGBUS : constant := System.Linux.SIGBUS; 94 SIGSEGV : constant := System.Linux.SIGSEGV; 95 SIGPIPE : constant := System.Linux.SIGPIPE; 96 SIGALRM : constant := System.Linux.SIGALRM; 97 SIGTERM : constant := System.Linux.SIGTERM; 98 SIGUSR1 : constant := System.Linux.SIGUSR1; 99 SIGUSR2 : constant := System.Linux.SIGUSR2; 100 SIGCLD : constant := System.Linux.SIGCLD; 101 SIGCHLD : constant := System.Linux.SIGCHLD; 102 SIGPWR : constant := System.Linux.SIGPWR; 103 SIGWINCH : constant := System.Linux.SIGWINCH; 104 SIGURG : constant := System.Linux.SIGURG; 105 SIGPOLL : constant := System.Linux.SIGPOLL; 106 SIGIO : constant := System.Linux.SIGIO; 107 SIGLOST : constant := System.Linux.SIGLOST; 108 SIGSTOP : constant := System.Linux.SIGSTOP; 109 SIGTSTP : constant := System.Linux.SIGTSTP; 110 SIGCONT : constant := System.Linux.SIGCONT; 111 SIGTTIN : constant := System.Linux.SIGTTIN; 112 SIGTTOU : constant := System.Linux.SIGTTOU; 113 SIGVTALRM : constant := System.Linux.SIGVTALRM; 114 SIGPROF : constant := System.Linux.SIGPROF; 115 SIGXCPU : constant := System.Linux.SIGXCPU; 116 SIGXFSZ : constant := System.Linux.SIGXFSZ; 117 SIGUNUSED : constant := System.Linux.SIGUNUSED; 118 SIGSTKFLT : constant := System.Linux.SIGSTKFLT; 119 SIGLTHRRES : constant := System.Linux.SIGLTHRRES; 120 SIGLTHRCAN : constant := System.Linux.SIGLTHRCAN; 121 SIGLTHRDBG : constant := System.Linux.SIGLTHRDBG; 122 123 SIGADAABORT : constant := SIGABRT; 124 -- Change this to use another signal for task abort. SIGTERM might be a 125 -- good one. 126 127 type Signal_Set is array (Natural range <>) of Signal; 128 129 Unmasked : constant Signal_Set := ( 130 SIGTRAP, 131 -- To enable debugging on multithreaded applications, mark SIGTRAP to 132 -- be kept unmasked. 133 134 SIGBUS, 135 136 SIGTTIN, SIGTTOU, SIGTSTP, 137 -- Keep these three signals unmasked so that background processes and IO 138 -- behaves as normal "C" applications 139 140 SIGPROF, 141 -- To avoid confusing the profiler 142 143 SIGKILL, SIGSTOP, 144 -- These two signals actually can't be masked (POSIX won't allow it) 145 146 SIGLTHRRES, SIGLTHRCAN, SIGLTHRDBG); 147 -- These three signals are used by GNU/LinuxThreads starting from glibc 148 -- 2.1 (future 2.2). 149 150 Reserved : constant Signal_Set := (SIGVTALRM, SIGUNUSED); 151 -- Not clear why these two signals are reserved. Perhaps they are not 152 -- supported by this version of GNU/Linux ??? 153 154 type sigset_t is private; 155 156 function sigaddset (set : access sigset_t; sig : Signal) return int; 157 pragma Import (C, sigaddset, "sigaddset"); 158 159 function sigdelset (set : access sigset_t; sig : Signal) return int; 160 pragma Import (C, sigdelset, "sigdelset"); 161 162 function sigfillset (set : access sigset_t) return int; 163 pragma Import (C, sigfillset, "sigfillset"); 164 165 function sigismember (set : access sigset_t; sig : Signal) return int; 166 pragma Import (C, sigismember, "sigismember"); 167 168 function sigemptyset (set : access sigset_t) return int; 169 pragma Import (C, sigemptyset, "sigemptyset"); 170 171 type union_type_3 is new String (1 .. 116); 172 type siginfo_t is record 173 si_signo : int; 174 si_code : int; 175 si_errno : int; 176 X_data : union_type_3; 177 end record; 178 pragma Convention (C, siginfo_t); 179 180 type struct_sigaction is record 181 sa_handler : System.Address; 182 sa_mask : sigset_t; 183 sa_flags : Interfaces.C.unsigned_long; 184 sa_restorer : System.Address; 185 end record; 186 pragma Convention (C, struct_sigaction); 187 188 type struct_sigaction_ptr is access all struct_sigaction; 189 190 type Machine_State is record 191 eip : unsigned_long; 192 ebx : unsigned_long; 193 esp : unsigned_long; 194 ebp : unsigned_long; 195 esi : unsigned_long; 196 edi : unsigned_long; 197 end record; 198 type Machine_State_Ptr is access all Machine_State; 199 200 SA_SIGINFO : constant := System.Linux.SA_SIGINFO; 201 SA_ONSTACK : constant := System.Linux.SA_ONSTACK; 202 203 SIG_BLOCK : constant := 0; 204 SIG_UNBLOCK : constant := 1; 205 SIG_SETMASK : constant := 2; 206 207 SIG_DFL : constant := 0; 208 SIG_IGN : constant := 1; 209 210 function sigaction 211 (sig : Signal; 212 act : struct_sigaction_ptr; 213 oact : struct_sigaction_ptr) return int; 214 pragma Import (C, sigaction, "sigaction"); 215 216 ---------- 217 -- Time -- 218 ---------- 219 220 type timespec is private; 221 222 function To_Duration (TS : timespec) return Duration; 223 pragma Inline (To_Duration); 224 225 function To_Timespec (D : Duration) return timespec; 226 pragma Inline (To_Timespec); 227 228 function sysconf (name : int) return long; 229 pragma Import (C, sysconf); 230 231 SC_CLK_TCK : constant := 2; 232 SC_NPROCESSORS_ONLN : constant := 84; 233 234 ------------------------- 235 -- Priority Scheduling -- 236 ------------------------- 237 238 SCHED_OTHER : constant := 0; 239 SCHED_FIFO : constant := 1; 240 SCHED_RR : constant := 2; 241 242 function To_Target_Priority 243 (Prio : System.Any_Priority) return Interfaces.C.int; 244 -- Maps System.Any_Priority to a POSIX priority 245 246 ------------- 247 -- Process -- 248 ------------- 249 250 type pid_t is private; 251 252 function kill (pid : pid_t; sig : Signal) return int; 253 pragma Import (C, kill, "kill"); 254 255 function getpid return pid_t; 256 pragma Import (C, getpid, "getpid"); 257 258 PR_SET_NAME : constant := 15; 259 260 function prctl 261 (option : int; 262 arg2, arg3, arg4, arg5 : unsigned_long := 0) return int; 263 pragma Import (C, prctl); 264 265 ------------- 266 -- Threads -- 267 ------------- 268 269 type Thread_Body is access 270 function (arg : System.Address) return System.Address; 271 pragma Convention (C, Thread_Body); 272 273 function Thread_Body_Access is new 274 Ada.Unchecked_Conversion (System.Address, Thread_Body); 275 276 type pthread_t is new unsigned_long; 277 subtype Thread_Id is pthread_t; 278 279 function To_pthread_t is 280 new Ada.Unchecked_Conversion (unsigned_long, pthread_t); 281 282 type pthread_mutex_t is limited private; 283 type pthread_rwlock_t is limited private; 284 type pthread_cond_t is limited private; 285 type pthread_attr_t is limited private; 286 type pthread_mutexattr_t is limited private; 287 type pthread_rwlockattr_t is limited private; 288 type pthread_condattr_t is limited private; 289 type pthread_key_t is private; 290 291 PTHREAD_CREATE_DETACHED : constant := 1; 292 293 ----------- 294 -- Stack -- 295 ----------- 296 297 type stack_t is record 298 ss_sp : System.Address; 299 ss_flags : int; 300 ss_size : size_t; 301 end record; 302 pragma Convention (C, stack_t); 303 304 function sigaltstack 305 (ss : not null access stack_t; 306 oss : access stack_t) return int; 307 pragma Import (C, sigaltstack, "sigaltstack"); 308 309 Alternate_Stack : aliased System.Address; 310 pragma Import (C, Alternate_Stack, "__gnat_alternate_stack"); 311 -- The alternate signal stack for stack overflows 312 313 Alternate_Stack_Size : constant := 16 * 1024; 314 -- This must be in keeping with init.c:__gnat_alternate_stack 315 316 function Get_Stack_Base (thread : pthread_t) return Address; 317 pragma Inline (Get_Stack_Base); 318 -- This is a dummy procedure to share some GNULLI files 319 320 --------------------------------------- 321 -- Nonstandard Thread Initialization -- 322 --------------------------------------- 323 324 procedure pthread_init; 325 pragma Inline (pthread_init); 326 -- This is a dummy procedure to share some GNULLI files 327 328 ------------------------- 329 -- POSIX.1c Section 3 -- 330 ------------------------- 331 332 function sigwait (set : access sigset_t; sig : access Signal) return int; 333 pragma Import (C, sigwait, "sigwait"); 334 335 function pthread_kill (thread : pthread_t; sig : Signal) return int; 336 pragma Import (C, pthread_kill, "pthread_kill"); 337 338 function pthread_sigmask 339 (how : int; 340 set : access sigset_t; 341 oset : access sigset_t) return int; 342 pragma Import (C, pthread_sigmask, "pthread_sigmask"); 343 344 -------------------------- 345 -- POSIX.1c Section 11 -- 346 -------------------------- 347 348 function pthread_mutexattr_init 349 (attr : access pthread_mutexattr_t) return int; 350 pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init"); 351 352 function pthread_mutexattr_destroy 353 (attr : access pthread_mutexattr_t) return int; 354 pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy"); 355 356 function pthread_mutex_init 357 (mutex : access pthread_mutex_t; 358 attr : access pthread_mutexattr_t) return int; 359 pragma Import (C, pthread_mutex_init, "pthread_mutex_init"); 360 361 function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int; 362 pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy"); 363 364 function pthread_mutex_lock (mutex : access pthread_mutex_t) return int; 365 pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock"); 366 367 function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int; 368 pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock"); 369 370 function pthread_rwlockattr_init 371 (attr : access pthread_rwlockattr_t) return int; 372 pragma Import (C, pthread_rwlockattr_init, "pthread_rwlockattr_init"); 373 374 function pthread_rwlockattr_destroy 375 (attr : access pthread_rwlockattr_t) return int; 376 pragma Import (C, pthread_rwlockattr_destroy, "pthread_rwlockattr_destroy"); 377 378 PTHREAD_RWLOCK_PREFER_READER_NP : constant := 0; 379 PTHREAD_RWLOCK_PREFER_WRITER_NP : constant := 1; 380 PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP : constant := 2; 381 382 function pthread_rwlockattr_setkind_np 383 (attr : access pthread_rwlockattr_t; 384 pref : int) return int; 385 pragma Import 386 (C, pthread_rwlockattr_setkind_np, "pthread_rwlockattr_setkind_np"); 387 388 function pthread_rwlock_init 389 (mutex : access pthread_rwlock_t; 390 attr : access pthread_rwlockattr_t) return int; 391 pragma Import (C, pthread_rwlock_init, "pthread_rwlock_init"); 392 393 function pthread_rwlock_destroy 394 (mutex : access pthread_rwlock_t) return int; 395 pragma Import (C, pthread_rwlock_destroy, "pthread_rwlock_destroy"); 396 397 function pthread_rwlock_rdlock (mutex : access pthread_rwlock_t) return int; 398 pragma Import (C, pthread_rwlock_rdlock, "pthread_rwlock_rdlock"); 399 400 function pthread_rwlock_wrlock (mutex : access pthread_rwlock_t) return int; 401 pragma Import (C, pthread_rwlock_wrlock, "pthread_rwlock_wrlock"); 402 403 function pthread_rwlock_unlock (mutex : access pthread_rwlock_t) return int; 404 pragma Import (C, pthread_rwlock_unlock, "pthread_rwlock_unlock"); 405 406 function pthread_condattr_init 407 (attr : access pthread_condattr_t) return int; 408 pragma Import (C, pthread_condattr_init, "pthread_condattr_init"); 409 410 function pthread_condattr_destroy 411 (attr : access pthread_condattr_t) return int; 412 pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy"); 413 414 function pthread_cond_init 415 (cond : access pthread_cond_t; 416 attr : access pthread_condattr_t) return int; 417 pragma Import (C, pthread_cond_init, "pthread_cond_init"); 418 419 function pthread_cond_destroy (cond : access pthread_cond_t) return int; 420 pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy"); 421 422 function pthread_cond_signal (cond : access pthread_cond_t) return int; 423 pragma Import (C, pthread_cond_signal, "pthread_cond_signal"); 424 425 function pthread_cond_wait 426 (cond : access pthread_cond_t; 427 mutex : access pthread_mutex_t) return int; 428 pragma Import (C, pthread_cond_wait, "pthread_cond_wait"); 429 430 function pthread_cond_timedwait 431 (cond : access pthread_cond_t; 432 mutex : access pthread_mutex_t; 433 abstime : access timespec) return int; 434 pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait"); 435 436 -------------------------- 437 -- POSIX.1c Section 13 -- 438 -------------------------- 439 440 type struct_sched_param is record 441 sched_priority : int; -- scheduling priority 442 end record; 443 pragma Convention (C, struct_sched_param); 444 445 function pthread_setschedparam 446 (thread : pthread_t; 447 policy : int; 448 param : access struct_sched_param) return int; 449 pragma Import (C, pthread_setschedparam, "pthread_setschedparam"); 450 451 function pthread_attr_setschedpolicy 452 (attr : access pthread_attr_t; 453 policy : int) return int; 454 pragma Import 455 (C, pthread_attr_setschedpolicy, "pthread_attr_setschedpolicy"); 456 457 function sched_yield return int; 458 pragma Import (C, sched_yield, "sched_yield"); 459 460 --------------------------- 461 -- P1003.1c - Section 16 -- 462 --------------------------- 463 464 function pthread_attr_init 465 (attributes : access pthread_attr_t) return int; 466 pragma Import (C, pthread_attr_init, "pthread_attr_init"); 467 468 function pthread_attr_destroy 469 (attributes : access pthread_attr_t) return int; 470 pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy"); 471 472 function pthread_attr_setdetachstate 473 (attr : access pthread_attr_t; 474 detachstate : int) return int; 475 pragma Import 476 (C, pthread_attr_setdetachstate, "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"); 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 function lwp_self return System.Address; 497 pragma Import (C, lwp_self, "__gnat_lwp_self"); 498 499 -------------------------- 500 -- POSIX.1c Section 17 -- 501 -------------------------- 502 503 function pthread_setspecific 504 (key : pthread_key_t; 505 value : System.Address) return int; 506 pragma Import (C, pthread_setspecific, "pthread_setspecific"); 507 508 function pthread_getspecific (key : pthread_key_t) return System.Address; 509 pragma Import (C, pthread_getspecific, "pthread_getspecific"); 510 511 type destructor_pointer is access procedure (arg : System.Address); 512 pragma Convention (C, destructor_pointer); 513 514 function pthread_key_create 515 (key : access pthread_key_t; 516 destructor : destructor_pointer) return int; 517 pragma Import (C, pthread_key_create, "pthread_key_create"); 518 519 CPU_SETSIZE : constant := 1_024; 520 -- Size of the cpu_set_t mask on most linux systems (SUSE 11 uses 4_096). 521 -- This is kept for backward compatibility (System.Task_Info uses it), but 522 -- the run-time library does no longer rely on static masks, using 523 -- dynamically allocated masks instead. 524 525 type bit_field is array (1 .. CPU_SETSIZE) of Boolean; 526 for bit_field'Size use CPU_SETSIZE; 527 pragma Pack (bit_field); 528 pragma Convention (C, bit_field); 529 530 type cpu_set_t is record 531 bits : bit_field; 532 end record; 533 pragma Convention (C, cpu_set_t); 534 535 type cpu_set_t_ptr is access all cpu_set_t; 536 -- In the run-time library we use this pointer because the size of type 537 -- cpu_set_t varies depending on the glibc version. Hence, objects of type 538 -- cpu_set_t are allocated dynamically using the number of processors 539 -- available in the target machine (value obtained at execution time). 540 541 function CPU_ALLOC (count : size_t) return cpu_set_t_ptr; 542 pragma Import (C, CPU_ALLOC, "__gnat_cpu_alloc"); 543 -- Wrapper around the CPU_ALLOC C macro 544 545 function CPU_ALLOC_SIZE (count : size_t) return size_t; 546 pragma Import (C, CPU_ALLOC_SIZE, "__gnat_cpu_alloc_size"); 547 -- Wrapper around the CPU_ALLOC_SIZE C macro 548 549 procedure CPU_FREE (cpuset : cpu_set_t_ptr); 550 pragma Import (C, CPU_FREE, "__gnat_cpu_free"); 551 -- Wrapper around the CPU_FREE C macro 552 553 procedure CPU_ZERO (count : size_t; cpuset : cpu_set_t_ptr); 554 pragma Import (C, CPU_ZERO, "__gnat_cpu_zero"); 555 -- Wrapper around the CPU_ZERO_S C macro 556 557 procedure CPU_SET (cpu : int; count : size_t; cpuset : cpu_set_t_ptr); 558 pragma Import (C, CPU_SET, "__gnat_cpu_set"); 559 -- Wrapper around the CPU_SET_S C macro 560 561 function pthread_setaffinity_np 562 (thread : pthread_t; 563 cpusetsize : size_t; 564 cpuset : cpu_set_t_ptr) return int; 565 pragma Import (C, pthread_setaffinity_np, "pthread_setaffinity_np"); 566 pragma Weak_External (pthread_setaffinity_np); 567 -- Use a weak symbol because this function may be available or not, 568 -- depending on the version of the system. 569 570 function pthread_attr_setaffinity_np 571 (attr : access pthread_attr_t; 572 cpusetsize : size_t; 573 cpuset : cpu_set_t_ptr) return int; 574 pragma Import (C, pthread_attr_setaffinity_np, 575 "pthread_attr_setaffinity_np"); 576 pragma Weak_External (pthread_attr_setaffinity_np); 577 -- Use a weak symbol because this function may be available or not, 578 -- depending on the version of the system. 579 580private 581 582 type sigset_t is 583 array (0 .. OS_Constants.SIZEOF_sigset - 1) of unsigned_char; 584 pragma Convention (C, sigset_t); 585 for sigset_t'Alignment use Interfaces.C.unsigned_long'Alignment; 586 587 pragma Warnings (Off); 588 for struct_sigaction use record 589 sa_handler at Linux.sa_handler_pos range 0 .. Standard'Address_Size - 1; 590 sa_mask at Linux.sa_mask_pos range 0 .. 1023; 591 sa_flags at Linux.sa_flags_pos range 0 .. Standard'Address_Size - 1; 592 end record; 593 -- We intentionally leave sa_restorer unspecified and let the compiler 594 -- append it after the last field, so disable corresponding warning. 595 pragma Warnings (On); 596 597 type pid_t is new int; 598 599 type time_t is new long; 600 601 type timespec is record 602 tv_sec : time_t; 603 tv_nsec : long; 604 end record; 605 pragma Convention (C, timespec); 606 607 type unsigned_long_long_t is mod 2 ** 64; 608 -- Local type only used to get the alignment of this type below 609 610 subtype char_array is Interfaces.C.char_array; 611 612 type pthread_attr_t is record 613 Data : char_array (1 .. OS_Constants.PTHREAD_ATTR_SIZE); 614 end record; 615 pragma Convention (C, pthread_attr_t); 616 for pthread_attr_t'Alignment use Interfaces.C.unsigned_long'Alignment; 617 618 type pthread_condattr_t is record 619 Data : char_array (1 .. OS_Constants.PTHREAD_CONDATTR_SIZE); 620 end record; 621 pragma Convention (C, pthread_condattr_t); 622 for pthread_condattr_t'Alignment use Interfaces.C.int'Alignment; 623 624 type pthread_mutexattr_t is record 625 Data : char_array (1 .. OS_Constants.PTHREAD_MUTEXATTR_SIZE); 626 end record; 627 pragma Convention (C, pthread_mutexattr_t); 628 for pthread_mutexattr_t'Alignment use Interfaces.C.int'Alignment; 629 630 type pthread_mutex_t is record 631 Data : char_array (1 .. OS_Constants.PTHREAD_MUTEX_SIZE); 632 end record; 633 pragma Convention (C, pthread_mutex_t); 634 for pthread_mutex_t'Alignment use Interfaces.C.unsigned_long'Alignment; 635 636 type pthread_rwlockattr_t is record 637 Data : char_array (1 .. OS_Constants.PTHREAD_RWLOCKATTR_SIZE); 638 end record; 639 pragma Convention (C, pthread_rwlockattr_t); 640 for pthread_rwlockattr_t'Alignment use Interfaces.C.unsigned_long'Alignment; 641 642 type pthread_rwlock_t is record 643 Data : char_array (1 .. OS_Constants.PTHREAD_RWLOCK_SIZE); 644 end record; 645 pragma Convention (C, pthread_rwlock_t); 646 for pthread_rwlock_t'Alignment use Interfaces.C.unsigned_long'Alignment; 647 648 type pthread_cond_t is record 649 Data : char_array (1 .. OS_Constants.PTHREAD_COND_SIZE); 650 end record; 651 pragma Convention (C, pthread_cond_t); 652 for pthread_cond_t'Alignment use unsigned_long_long_t'Alignment; 653 654 type pthread_key_t is new unsigned; 655 656end System.OS_Interface; 657