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 Solaris (POSIX Threads) 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 Interfaces.C; 42 43with Ada.Unchecked_Conversion; 44 45package System.OS_Interface is 46 pragma Preelaborate; 47 48 pragma Linker_Options ("-lposix4"); 49 pragma Linker_Options ("-lpthread"); 50 51 -- The following is needed to allow --enable-threads=solaris 52 53 pragma Linker_Options ("-lthread"); 54 55 subtype int is Interfaces.C.int; 56 subtype short is Interfaces.C.short; 57 subtype long is Interfaces.C.long; 58 subtype unsigned is Interfaces.C.unsigned; 59 subtype unsigned_short is Interfaces.C.unsigned_short; 60 subtype unsigned_long is Interfaces.C.unsigned_long; 61 subtype unsigned_char is Interfaces.C.unsigned_char; 62 subtype plain_char is Interfaces.C.plain_char; 63 subtype size_t is Interfaces.C.size_t; 64 65 ----------- 66 -- Errno -- 67 ----------- 68 69 function errno return int; 70 pragma Import (C, errno, "__get_errno"); 71 72 EAGAIN : constant := 11; 73 EINTR : constant := 4; 74 EINVAL : constant := 22; 75 ENOMEM : constant := 12; 76 ETIMEDOUT : constant := 145; 77 78 ------------- 79 -- Signals -- 80 ------------- 81 82 Max_Interrupt : constant := 45; 83 type Signal is new int range 0 .. Max_Interrupt; 84 for Signal'Size use int'Size; 85 86 SIGHUP : constant := 1; -- hangup 87 SIGINT : constant := 2; -- interrupt (rubout) 88 SIGQUIT : constant := 3; -- quit (ASCD FS) 89 SIGILL : constant := 4; -- illegal instruction (not reset) 90 SIGTRAP : constant := 5; -- trace trap (not reset) 91 SIGIOT : constant := 6; -- IOT instruction 92 SIGABRT : constant := 6; -- used by abort, replace SIGIOT in the future 93 SIGEMT : constant := 7; -- EMT instruction 94 SIGFPE : constant := 8; -- floating point exception 95 SIGKILL : constant := 9; -- kill (cannot be caught or ignored) 96 SIGBUS : constant := 10; -- bus error 97 SIGSEGV : constant := 11; -- segmentation violation 98 SIGSYS : constant := 12; -- bad argument to system call 99 SIGPIPE : constant := 13; -- write on a pipe with no one to read it 100 SIGALRM : constant := 14; -- alarm clock 101 SIGTERM : constant := 15; -- software termination signal from kill 102 SIGUSR1 : constant := 16; -- user defined signal 1 103 SIGUSR2 : constant := 17; -- user defined signal 2 104 SIGCLD : constant := 18; -- alias for SIGCHLD 105 SIGCHLD : constant := 18; -- child status change 106 SIGPWR : constant := 19; -- power-fail restart 107 SIGWINCH : constant := 20; -- window size change 108 SIGURG : constant := 21; -- urgent condition on IO channel 109 SIGPOLL : constant := 22; -- pollable event occurred 110 SIGIO : constant := 22; -- I/O possible (Solaris SIGPOLL alias) 111 SIGSTOP : constant := 23; -- stop (cannot be caught or ignored) 112 SIGTSTP : constant := 24; -- user stop requested from tty 113 SIGCONT : constant := 25; -- stopped process has been continued 114 SIGTTIN : constant := 26; -- background tty read attempted 115 SIGTTOU : constant := 27; -- background tty write attempted 116 SIGVTALRM : constant := 28; -- virtual timer expired 117 SIGPROF : constant := 29; -- profiling timer expired 118 SIGXCPU : constant := 30; -- CPU time limit exceeded 119 SIGXFSZ : constant := 31; -- filesize limit exceeded 120 SIGWAITING : constant := 32; -- process's lwps blocked (Solaris) 121 SIGLWP : constant := 33; -- used by thread library (Solaris) 122 SIGFREEZE : constant := 34; -- used by CPR (Solaris) 123 SIGTHAW : constant := 35; -- used by CPR (Solaris) 124 SIGCANCEL : constant := 36; -- thread cancellation signal (libthread) 125 126 SIGADAABORT : constant := SIGABRT; 127 128 type Signal_Set is array (Natural range <>) of Signal; 129 130 Unmasked : constant Signal_Set := (SIGTRAP, SIGLWP, SIGPROF); 131 132 -- Following signals should not be disturbed. 133 -- See c-posix-signals.c in FLORIST 134 135 Reserved : constant Signal_Set := 136 (SIGKILL, SIGSTOP, SIGWAITING, SIGCANCEL); 137 138 type sigset_t is private; 139 140 function sigaddset (set : access sigset_t; sig : Signal) return int; 141 pragma Import (C, sigaddset, "sigaddset"); 142 143 function sigdelset (set : access sigset_t; sig : Signal) return int; 144 pragma Import (C, sigdelset, "sigdelset"); 145 146 function sigfillset (set : access sigset_t) return int; 147 pragma Import (C, sigfillset, "sigfillset"); 148 149 function sigismember (set : access sigset_t; sig : Signal) return int; 150 pragma Import (C, sigismember, "sigismember"); 151 152 function sigemptyset (set : access sigset_t) return int; 153 pragma Import (C, sigemptyset, "sigemptyset"); 154 155 type struct_sigaction is record 156 sa_flags : int; 157 sa_handler : System.Address; 158 sa_mask : sigset_t; 159 sa_resv1 : int; 160 sa_resv2 : int; 161 end record; 162 pragma Convention (C, struct_sigaction); 163 type struct_sigaction_ptr is access all struct_sigaction; 164 165 SA_SIGINFO : constant := 16#0008#; 166 SA_ONSTACK : constant := 16#0001#; 167 168 SIG_BLOCK : constant := 1; 169 SIG_UNBLOCK : constant := 2; 170 SIG_SETMASK : constant := 3; 171 172 SIG_DFL : constant := 0; 173 SIG_IGN : constant := 1; 174 175 function sigaction 176 (sig : Signal; 177 act : struct_sigaction_ptr; 178 oact : struct_sigaction_ptr) return int; 179 pragma Import (C, sigaction, "sigaction"); 180 181 ---------- 182 -- Time -- 183 ---------- 184 185 Time_Slice_Supported : constant Boolean := True; 186 -- Indicates whether time slicing is supported 187 188 type timespec is private; 189 190 type clockid_t is new int; 191 192 function clock_getres 193 (clock_id : clockid_t; 194 res : access timespec) return int; 195 pragma Import (C, clock_getres, "clock_getres"); 196 197 function clock_gettime 198 (clock_id : clockid_t; 199 tp : access timespec) return int; 200 pragma Import (C, clock_gettime, "clock_gettime"); 201 202 function To_Duration (TS : timespec) return Duration; 203 pragma Inline (To_Duration); 204 205 function To_Timespec (D : Duration) return timespec; 206 pragma Inline (To_Timespec); 207 208 ------------------------- 209 -- Priority Scheduling -- 210 ------------------------- 211 212 SCHED_FIFO : constant := 1; 213 SCHED_RR : constant := 2; 214 SCHED_OTHER : constant := 0; 215 216 function To_Target_Priority 217 (Prio : System.Any_Priority) return Interfaces.C.int; 218 -- Maps System.Any_Priority to a POSIX priority 219 220 ------------- 221 -- Process -- 222 ------------- 223 224 type pid_t is private; 225 226 function kill (pid : pid_t; sig : Signal) return int; 227 pragma Import (C, kill, "kill"); 228 229 function getpid return pid_t; 230 pragma Import (C, getpid, "getpid"); 231 232 --------- 233 -- LWP -- 234 --------- 235 236 function lwp_self return System.Address; 237 pragma Import (C, lwp_self, "_lwp_self"); 238 239 ------------- 240 -- Threads -- 241 ------------- 242 243 type Thread_Body is access 244 function (arg : System.Address) return System.Address; 245 pragma Convention (C, Thread_Body); 246 247 function Thread_Body_Access is new 248 Ada.Unchecked_Conversion (System.Address, Thread_Body); 249 250 type pthread_t is private; 251 subtype Thread_Id is pthread_t; 252 253 type pthread_mutex_t is limited private; 254 type pthread_cond_t is limited private; 255 type pthread_attr_t is limited private; 256 type pthread_mutexattr_t is limited private; 257 type pthread_condattr_t is limited private; 258 type pthread_key_t is private; 259 260 -- Read/Write lock not supported on Solaris. To add support both types 261 -- pthread_rwlock_t and pthread_rwlockattr_t must properly be defined 262 -- with the associated routines pthread_rwlock_[init/destroy] and 263 -- pthread_rwlock_[rdlock/wrlock/unlock]. 264 265 subtype pthread_rwlock_t is pthread_mutex_t; 266 subtype pthread_rwlockattr_t is pthread_mutexattr_t; 267 268 PTHREAD_CREATE_DETACHED : constant := 16#40#; 269 270 PTHREAD_SCOPE_PROCESS : constant := 0; 271 PTHREAD_SCOPE_SYSTEM : constant := 1; 272 273 ----------- 274 -- Stack -- 275 ----------- 276 277 type stack_t is record 278 ss_sp : System.Address; 279 ss_size : size_t; 280 ss_flags : int; 281 end record; 282 pragma Convention (C, stack_t); 283 284 function sigaltstack 285 (ss : not null access stack_t; 286 oss : access stack_t) return int; 287 pragma Import (C, sigaltstack, "sigaltstack"); 288 289 Alternate_Stack : aliased System.Address; 290 -- This is a dummy definition, never used (Alternate_Stack_Size is null) 291 292 Alternate_Stack_Size : constant := 0; 293 -- No alternate signal stack is used on this platform 294 295 Stack_Base_Available : constant Boolean := False; 296 -- Indicates whether the stack base is available on this target 297 298 function Get_Stack_Base (thread : pthread_t) return Address; 299 pragma Inline (Get_Stack_Base); 300 -- Returns the stack base of the specified thread. Only call this function 301 -- when Stack_Base_Available is True. 302 303 function Get_Page_Size return size_t; 304 function Get_Page_Size return Address; 305 pragma Import (C, Get_Page_Size, "getpagesize"); 306 -- Returns the size of a page 307 308 PROT_NONE : constant := 0; 309 PROT_READ : constant := 1; 310 PROT_WRITE : constant := 2; 311 PROT_EXEC : constant := 4; 312 PROT_ALL : constant := PROT_READ + PROT_WRITE + PROT_EXEC; 313 PROT_ON : constant := PROT_READ; 314 PROT_OFF : constant := PROT_ALL; 315 316 function mprotect (addr : Address; len : size_t; prot : int) return int; 317 pragma Import (C, mprotect); 318 319 --------------------------------------- 320 -- Nonstandard Thread Initialization -- 321 --------------------------------------- 322 323 procedure pthread_init; 324 -- This is a dummy procedure to share some GNULLI files 325 326 ------------------------- 327 -- POSIX.1c Section 3 -- 328 ------------------------- 329 330 function sigwait 331 (set : access sigset_t; 332 sig : access Signal) return int; 333 pragma Import (C, sigwait, "__posix_sigwait"); 334 335 function pthread_kill 336 (thread : pthread_t; 337 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_condattr_init 373 (attr : access pthread_condattr_t) return int; 374 pragma Import (C, pthread_condattr_init, "pthread_condattr_init"); 375 376 function pthread_condattr_destroy 377 (attr : access pthread_condattr_t) return int; 378 pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy"); 379 380 function pthread_cond_init 381 (cond : access pthread_cond_t; 382 attr : access pthread_condattr_t) return int; 383 pragma Import (C, pthread_cond_init, "pthread_cond_init"); 384 385 function pthread_cond_destroy (cond : access pthread_cond_t) return int; 386 pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy"); 387 388 function pthread_cond_signal (cond : access pthread_cond_t) return int; 389 pragma Import (C, pthread_cond_signal, "pthread_cond_signal"); 390 391 function pthread_cond_wait 392 (cond : access pthread_cond_t; 393 mutex : access pthread_mutex_t) return int; 394 pragma Import (C, pthread_cond_wait, "pthread_cond_wait"); 395 396 function pthread_cond_timedwait 397 (cond : access pthread_cond_t; 398 mutex : access pthread_mutex_t; 399 abstime : access timespec) return int; 400 pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait"); 401 402 Relative_Timed_Wait : constant Boolean := False; 403 -- pthread_cond_timedwait requires an absolute delay time 404 405 -------------------------- 406 -- POSIX.1c Section 13 -- 407 -------------------------- 408 409 PTHREAD_PRIO_NONE : constant := 0; 410 PTHREAD_PRIO_INHERIT : constant := 16#10#; 411 PTHREAD_PRIO_PROTECT : constant := 16#20#; 412 413 function pthread_mutexattr_setprotocol 414 (attr : access pthread_mutexattr_t; 415 protocol : int) return int; 416 pragma Import (C, pthread_mutexattr_setprotocol); 417 418 function pthread_mutexattr_setprioceiling 419 (attr : access pthread_mutexattr_t; 420 prioceiling : int) return int; 421 pragma Import (C, pthread_mutexattr_setprioceiling); 422 423 type Array_8_Int is array (0 .. 7) of int; 424 type struct_sched_param is record 425 sched_priority : int; 426 sched_pad : Array_8_Int; 427 end record; 428 429 function pthread_setschedparam 430 (thread : pthread_t; 431 policy : int; 432 param : access struct_sched_param) return int; 433 pragma Import (C, pthread_setschedparam, "pthread_setschedparam"); 434 435 function pthread_attr_setscope 436 (attr : access pthread_attr_t; 437 contentionscope : int) return int; 438 pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope"); 439 440 function pthread_attr_setinheritsched 441 (attr : access pthread_attr_t; 442 inheritsched : int) return int; 443 pragma Import (C, pthread_attr_setinheritsched); 444 445 function pthread_attr_setschedpolicy 446 (attr : access pthread_attr_t; 447 policy : int) return int; 448 pragma Import (C, pthread_attr_setschedpolicy); 449 450 function sched_yield return int; 451 pragma Import (C, sched_yield, "sched_yield"); 452 453 --------------------------- 454 -- P1003.1c - Section 16 -- 455 --------------------------- 456 457 function pthread_attr_init (attributes : access pthread_attr_t) return int; 458 pragma Import (C, pthread_attr_init, "pthread_attr_init"); 459 460 function pthread_attr_destroy 461 (attributes : access pthread_attr_t) return int; 462 pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy"); 463 464 function pthread_attr_setdetachstate 465 (attr : access pthread_attr_t; 466 detachstate : int) return int; 467 pragma Import (C, pthread_attr_setdetachstate); 468 469 function pthread_attr_setstacksize 470 (attr : access pthread_attr_t; 471 stacksize : size_t) return int; 472 pragma Import (C, pthread_attr_setstacksize); 473 474 function pthread_create 475 (thread : access pthread_t; 476 attributes : access pthread_attr_t; 477 start_routine : Thread_Body; 478 arg : System.Address) return int; 479 pragma Import (C, pthread_create, "pthread_create"); 480 481 procedure pthread_exit (status : System.Address); 482 pragma Import (C, pthread_exit, "pthread_exit"); 483 484 function pthread_self return pthread_t; 485 pragma Import (C, pthread_self, "pthread_self"); 486 487 -------------------------- 488 -- POSIX.1c Section 17 -- 489 -------------------------- 490 491 function pthread_setspecific 492 (key : pthread_key_t; 493 value : System.Address) return int; 494 pragma Import (C, pthread_setspecific, "pthread_setspecific"); 495 496 function pthread_getspecific (key : pthread_key_t) return System.Address; 497 pragma Import (C, pthread_getspecific, "pthread_getspecific"); 498 499 type destructor_pointer is access procedure (arg : System.Address); 500 pragma Convention (C, destructor_pointer); 501 502 function pthread_key_create 503 (key : access pthread_key_t; 504 destructor : destructor_pointer) return int; 505 pragma Import (C, pthread_key_create, "pthread_key_create"); 506 507private 508 509 type array_type_1 is array (Integer range 0 .. 3) of unsigned_long; 510 type sigset_t is record 511 X_X_sigbits : array_type_1; 512 end record; 513 pragma Convention (C, sigset_t); 514 515 type pid_t is new long; 516 517 type time_t is new long; 518 519 type timespec is record 520 tv_sec : time_t; 521 tv_nsec : long; 522 end record; 523 pragma Convention (C, timespec); 524 525 type pthread_attr_t is record 526 pthread_attrp : System.Address; 527 end record; 528 pragma Convention (C, pthread_attr_t); 529 530 type pthread_condattr_t is record 531 pthread_condattrp : System.Address; 532 end record; 533 pragma Convention (C, pthread_condattr_t); 534 535 type pthread_mutexattr_t is record 536 pthread_mutexattrp : System.Address; 537 end record; 538 pragma Convention (C, pthread_mutexattr_t); 539 540 type pthread_t is new unsigned; 541 542 type uint64_t is mod 2 ** 64; 543 544 type pthread_mutex_t is record 545 pthread_mutex_flags : uint64_t; 546 pthread_mutex_owner64 : uint64_t; 547 pthread_mutex_data : uint64_t; 548 end record; 549 pragma Convention (C, pthread_mutex_t); 550 type pthread_mutex_t_ptr is access pthread_mutex_t; 551 552 type pthread_cond_t is record 553 pthread_cond_flags : uint64_t; 554 pthread_cond_data : uint64_t; 555 end record; 556 pragma Convention (C, pthread_cond_t); 557 558 type pthread_key_t is new unsigned; 559 560end System.OS_Interface; 561