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) 1995-2014, 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 subtype time_t is System.Linux.time_t; 221 subtype timespec is System.Linux.timespec; 222 subtype timeval is System.Linux.timeval; 223 224 function To_Duration (TS : timespec) return Duration; 225 pragma Inline (To_Duration); 226 227 function To_Timespec (D : Duration) return timespec; 228 pragma Inline (To_Timespec); 229 230 function sysconf (name : int) return long; 231 pragma Import (C, sysconf); 232 233 SC_CLK_TCK : constant := 2; 234 SC_NPROCESSORS_ONLN : constant := 84; 235 236 ------------------------- 237 -- Priority Scheduling -- 238 ------------------------- 239 240 SCHED_OTHER : constant := 0; 241 SCHED_FIFO : constant := 1; 242 SCHED_RR : constant := 2; 243 244 function To_Target_Priority 245 (Prio : System.Any_Priority) return Interfaces.C.int; 246 -- Maps System.Any_Priority to a POSIX priority 247 248 ------------- 249 -- Process -- 250 ------------- 251 252 type pid_t is private; 253 254 function kill (pid : pid_t; sig : Signal) return int; 255 pragma Import (C, kill, "kill"); 256 257 function getpid return pid_t; 258 pragma Import (C, getpid, "getpid"); 259 260 PR_SET_NAME : constant := 15; 261 262 function prctl 263 (option : int; 264 arg2, arg3, arg4, arg5 : unsigned_long := 0) return int; 265 pragma Import (C, prctl); 266 267 ------------- 268 -- Threads -- 269 ------------- 270 271 type Thread_Body is access 272 function (arg : System.Address) return System.Address; 273 pragma Convention (C, Thread_Body); 274 275 function Thread_Body_Access is new 276 Ada.Unchecked_Conversion (System.Address, Thread_Body); 277 278 type pthread_t is new unsigned_long; 279 subtype Thread_Id is pthread_t; 280 281 function To_pthread_t is 282 new Ada.Unchecked_Conversion (unsigned_long, pthread_t); 283 284 type pthread_mutex_t is limited private; 285 type pthread_rwlock_t is limited private; 286 type pthread_cond_t is limited private; 287 type pthread_attr_t is limited private; 288 type pthread_mutexattr_t is limited private; 289 type pthread_rwlockattr_t is limited private; 290 type pthread_condattr_t is limited private; 291 type pthread_key_t is private; 292 293 PTHREAD_CREATE_DETACHED : constant := 1; 294 295 ----------- 296 -- Stack -- 297 ----------- 298 299 type stack_t is record 300 ss_sp : System.Address; 301 ss_flags : int; 302 ss_size : size_t; 303 end record; 304 pragma Convention (C, stack_t); 305 306 function sigaltstack 307 (ss : not null access stack_t; 308 oss : access stack_t) return int; 309 pragma Import (C, sigaltstack, "sigaltstack"); 310 311 Alternate_Stack : aliased System.Address; 312 pragma Import (C, Alternate_Stack, "__gnat_alternate_stack"); 313 -- The alternate signal stack for stack overflows 314 315 Alternate_Stack_Size : constant := 16 * 1024; 316 -- This must be in keeping with init.c:__gnat_alternate_stack 317 318 function Get_Stack_Base (thread : pthread_t) return Address; 319 pragma Inline (Get_Stack_Base); 320 -- This is a dummy procedure to share some GNULLI files 321 322 --------------------------------------- 323 -- Nonstandard Thread Initialization -- 324 --------------------------------------- 325 326 procedure pthread_init; 327 pragma Inline (pthread_init); 328 -- This is a dummy procedure to share some GNULLI files 329 330 ------------------------- 331 -- POSIX.1c Section 3 -- 332 ------------------------- 333 334 function sigwait (set : access sigset_t; sig : access Signal) return int; 335 pragma Import (C, sigwait, "sigwait"); 336 337 function pthread_kill (thread : pthread_t; sig : Signal) return int; 338 pragma Import (C, pthread_kill, "pthread_kill"); 339 340 function pthread_sigmask 341 (how : int; 342 set : access sigset_t; 343 oset : access sigset_t) return int; 344 pragma Import (C, pthread_sigmask, "pthread_sigmask"); 345 346 -------------------------- 347 -- POSIX.1c Section 11 -- 348 -------------------------- 349 350 function pthread_mutexattr_init 351 (attr : access pthread_mutexattr_t) return int; 352 pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init"); 353 354 function pthread_mutexattr_destroy 355 (attr : access pthread_mutexattr_t) return int; 356 pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy"); 357 358 function pthread_mutex_init 359 (mutex : access pthread_mutex_t; 360 attr : access pthread_mutexattr_t) return int; 361 pragma Import (C, pthread_mutex_init, "pthread_mutex_init"); 362 363 function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int; 364 pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy"); 365 366 function pthread_mutex_lock (mutex : access pthread_mutex_t) return int; 367 pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock"); 368 369 function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int; 370 pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock"); 371 372 function pthread_rwlockattr_init 373 (attr : access pthread_rwlockattr_t) return int; 374 pragma Import (C, pthread_rwlockattr_init, "pthread_rwlockattr_init"); 375 376 function pthread_rwlockattr_destroy 377 (attr : access pthread_rwlockattr_t) return int; 378 pragma Import (C, pthread_rwlockattr_destroy, "pthread_rwlockattr_destroy"); 379 380 PTHREAD_RWLOCK_PREFER_READER_NP : constant := 0; 381 PTHREAD_RWLOCK_PREFER_WRITER_NP : constant := 1; 382 PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP : constant := 2; 383 384 function pthread_rwlockattr_setkind_np 385 (attr : access pthread_rwlockattr_t; 386 pref : int) return int; 387 pragma Import 388 (C, pthread_rwlockattr_setkind_np, "pthread_rwlockattr_setkind_np"); 389 390 function pthread_rwlock_init 391 (mutex : access pthread_rwlock_t; 392 attr : access pthread_rwlockattr_t) return int; 393 pragma Import (C, pthread_rwlock_init, "pthread_rwlock_init"); 394 395 function pthread_rwlock_destroy 396 (mutex : access pthread_rwlock_t) return int; 397 pragma Import (C, pthread_rwlock_destroy, "pthread_rwlock_destroy"); 398 399 function pthread_rwlock_rdlock (mutex : access pthread_rwlock_t) return int; 400 pragma Import (C, pthread_rwlock_rdlock, "pthread_rwlock_rdlock"); 401 402 function pthread_rwlock_wrlock (mutex : access pthread_rwlock_t) return int; 403 pragma Import (C, pthread_rwlock_wrlock, "pthread_rwlock_wrlock"); 404 405 function pthread_rwlock_unlock (mutex : access pthread_rwlock_t) return int; 406 pragma Import (C, pthread_rwlock_unlock, "pthread_rwlock_unlock"); 407 408 function pthread_condattr_init 409 (attr : access pthread_condattr_t) return int; 410 pragma Import (C, pthread_condattr_init, "pthread_condattr_init"); 411 412 function pthread_condattr_destroy 413 (attr : access pthread_condattr_t) return int; 414 pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy"); 415 416 function pthread_cond_init 417 (cond : access pthread_cond_t; 418 attr : access pthread_condattr_t) return int; 419 pragma Import (C, pthread_cond_init, "pthread_cond_init"); 420 421 function pthread_cond_destroy (cond : access pthread_cond_t) return int; 422 pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy"); 423 424 function pthread_cond_signal (cond : access pthread_cond_t) return int; 425 pragma Import (C, pthread_cond_signal, "pthread_cond_signal"); 426 427 function pthread_cond_wait 428 (cond : access pthread_cond_t; 429 mutex : access pthread_mutex_t) return int; 430 pragma Import (C, pthread_cond_wait, "pthread_cond_wait"); 431 432 function pthread_cond_timedwait 433 (cond : access pthread_cond_t; 434 mutex : access pthread_mutex_t; 435 abstime : access timespec) return int; 436 pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait"); 437 438 -------------------------- 439 -- POSIX.1c Section 13 -- 440 -------------------------- 441 442 type struct_sched_param is record 443 sched_priority : int; -- scheduling priority 444 end record; 445 pragma Convention (C, struct_sched_param); 446 447 function pthread_setschedparam 448 (thread : pthread_t; 449 policy : int; 450 param : access struct_sched_param) return int; 451 pragma Import (C, pthread_setschedparam, "pthread_setschedparam"); 452 453 function pthread_attr_setschedpolicy 454 (attr : access pthread_attr_t; 455 policy : int) return int; 456 pragma Import 457 (C, pthread_attr_setschedpolicy, "pthread_attr_setschedpolicy"); 458 459 function sched_yield return int; 460 pragma Import (C, sched_yield, "sched_yield"); 461 462 --------------------------- 463 -- P1003.1c - Section 16 -- 464 --------------------------- 465 466 function pthread_attr_init 467 (attributes : access pthread_attr_t) return int; 468 pragma Import (C, pthread_attr_init, "pthread_attr_init"); 469 470 function pthread_attr_destroy 471 (attributes : access pthread_attr_t) return int; 472 pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy"); 473 474 function pthread_attr_setdetachstate 475 (attr : access pthread_attr_t; 476 detachstate : int) return int; 477 pragma Import 478 (C, pthread_attr_setdetachstate, "pthread_attr_setdetachstate"); 479 480 function pthread_attr_setstacksize 481 (attr : access pthread_attr_t; 482 stacksize : size_t) return int; 483 pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize"); 484 485 function pthread_create 486 (thread : access pthread_t; 487 attributes : access pthread_attr_t; 488 start_routine : Thread_Body; 489 arg : System.Address) return int; 490 pragma Import (C, pthread_create, "pthread_create"); 491 492 procedure pthread_exit (status : System.Address); 493 pragma Import (C, pthread_exit, "pthread_exit"); 494 495 function pthread_self return pthread_t; 496 pragma Import (C, pthread_self, "pthread_self"); 497 498 function lwp_self return System.Address; 499 pragma Import (C, lwp_self, "__gnat_lwp_self"); 500 501 -------------------------- 502 -- POSIX.1c Section 17 -- 503 -------------------------- 504 505 function pthread_setspecific 506 (key : pthread_key_t; 507 value : System.Address) return int; 508 pragma Import (C, pthread_setspecific, "pthread_setspecific"); 509 510 function pthread_getspecific (key : pthread_key_t) return System.Address; 511 pragma Import (C, pthread_getspecific, "pthread_getspecific"); 512 513 type destructor_pointer is access procedure (arg : System.Address); 514 pragma Convention (C, destructor_pointer); 515 516 function pthread_key_create 517 (key : access pthread_key_t; 518 destructor : destructor_pointer) return int; 519 pragma Import (C, pthread_key_create, "pthread_key_create"); 520 521 CPU_SETSIZE : constant := 1_024; 522 -- Size of the cpu_set_t mask on most linux systems (SUSE 11 uses 4_096). 523 -- This is kept for backward compatibility (System.Task_Info uses it), but 524 -- the run-time library does no longer rely on static masks, using 525 -- dynamically allocated masks instead. 526 527 type bit_field is array (1 .. CPU_SETSIZE) of Boolean; 528 for bit_field'Size use CPU_SETSIZE; 529 pragma Pack (bit_field); 530 pragma Convention (C, bit_field); 531 532 type cpu_set_t is record 533 bits : bit_field; 534 end record; 535 pragma Convention (C, cpu_set_t); 536 537 type cpu_set_t_ptr is access all cpu_set_t; 538 -- In the run-time library we use this pointer because the size of type 539 -- cpu_set_t varies depending on the glibc version. Hence, objects of type 540 -- cpu_set_t are allocated dynamically using the number of processors 541 -- available in the target machine (value obtained at execution time). 542 543 function CPU_ALLOC (count : size_t) return cpu_set_t_ptr; 544 pragma Import (C, CPU_ALLOC, "__gnat_cpu_alloc"); 545 -- Wrapper around the CPU_ALLOC C macro 546 547 function CPU_ALLOC_SIZE (count : size_t) return size_t; 548 pragma Import (C, CPU_ALLOC_SIZE, "__gnat_cpu_alloc_size"); 549 -- Wrapper around the CPU_ALLOC_SIZE C macro 550 551 procedure CPU_FREE (cpuset : cpu_set_t_ptr); 552 pragma Import (C, CPU_FREE, "__gnat_cpu_free"); 553 -- Wrapper around the CPU_FREE C macro 554 555 procedure CPU_ZERO (count : size_t; cpuset : cpu_set_t_ptr); 556 pragma Import (C, CPU_ZERO, "__gnat_cpu_zero"); 557 -- Wrapper around the CPU_ZERO_S C macro 558 559 procedure CPU_SET (cpu : int; count : size_t; cpuset : cpu_set_t_ptr); 560 pragma Import (C, CPU_SET, "__gnat_cpu_set"); 561 -- Wrapper around the CPU_SET_S C macro 562 563 function pthread_setaffinity_np 564 (thread : pthread_t; 565 cpusetsize : size_t; 566 cpuset : cpu_set_t_ptr) return int; 567 pragma Import (C, pthread_setaffinity_np, "pthread_setaffinity_np"); 568 pragma Weak_External (pthread_setaffinity_np); 569 -- Use a weak symbol because this function may be available or not, 570 -- depending on the version of the system. 571 572 function pthread_attr_setaffinity_np 573 (attr : access pthread_attr_t; 574 cpusetsize : size_t; 575 cpuset : cpu_set_t_ptr) return int; 576 pragma Import (C, pthread_attr_setaffinity_np, 577 "pthread_attr_setaffinity_np"); 578 pragma Weak_External (pthread_attr_setaffinity_np); 579 -- Use a weak symbol because this function may be available or not, 580 -- depending on the version of the system. 581 582private 583 584 type sigset_t is 585 array (0 .. OS_Constants.SIZEOF_sigset - 1) of unsigned_char; 586 pragma Convention (C, sigset_t); 587 for sigset_t'Alignment use Interfaces.C.unsigned_long'Alignment; 588 589 pragma Warnings (Off); 590 for struct_sigaction use record 591 sa_handler at Linux.sa_handler_pos range 0 .. Standard'Address_Size - 1; 592 sa_mask at Linux.sa_mask_pos range 0 .. 1023; 593 sa_flags at Linux.sa_flags_pos 594 range 0 .. Interfaces.C.unsigned_long'Size - 1; 595 end record; 596 -- We intentionally leave sa_restorer unspecified and let the compiler 597 -- append it after the last field, so disable corresponding warning. 598 pragma Warnings (On); 599 600 type pid_t is new int; 601 602 type unsigned_long_long_t is mod 2 ** 64; 603 -- Local type only used to get the alignment of this type below 604 605 subtype char_array is Interfaces.C.char_array; 606 607 type pthread_attr_t is record 608 Data : char_array (1 .. OS_Constants.PTHREAD_ATTR_SIZE); 609 end record; 610 pragma Convention (C, pthread_attr_t); 611 for pthread_attr_t'Alignment use Interfaces.C.unsigned_long'Alignment; 612 613 type pthread_condattr_t is record 614 Data : char_array (1 .. OS_Constants.PTHREAD_CONDATTR_SIZE); 615 end record; 616 pragma Convention (C, pthread_condattr_t); 617 for pthread_condattr_t'Alignment use Interfaces.C.int'Alignment; 618 619 type pthread_mutexattr_t is record 620 Data : char_array (1 .. OS_Constants.PTHREAD_MUTEXATTR_SIZE); 621 end record; 622 pragma Convention (C, pthread_mutexattr_t); 623 for pthread_mutexattr_t'Alignment use Interfaces.C.int'Alignment; 624 625 type pthread_mutex_t is record 626 Data : char_array (1 .. OS_Constants.PTHREAD_MUTEX_SIZE); 627 end record; 628 pragma Convention (C, pthread_mutex_t); 629 for pthread_mutex_t'Alignment use Interfaces.C.unsigned_long'Alignment; 630 631 type pthread_rwlockattr_t is record 632 Data : char_array (1 .. OS_Constants.PTHREAD_RWLOCKATTR_SIZE); 633 end record; 634 pragma Convention (C, pthread_rwlockattr_t); 635 for pthread_rwlockattr_t'Alignment use Interfaces.C.unsigned_long'Alignment; 636 637 type pthread_rwlock_t is record 638 Data : char_array (1 .. OS_Constants.PTHREAD_RWLOCK_SIZE); 639 end record; 640 pragma Convention (C, pthread_rwlock_t); 641 for pthread_rwlock_t'Alignment use Interfaces.C.unsigned_long'Alignment; 642 643 type pthread_cond_t is record 644 Data : char_array (1 .. OS_Constants.PTHREAD_COND_SIZE); 645 end record; 646 pragma Convention (C, pthread_cond_t); 647 for pthread_cond_t'Alignment use unsigned_long_long_t'Alignment; 648 649 type pthread_key_t is new unsigned; 650 651end System.OS_Interface; 652