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) 1995-2011, 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_gettime 193 (clock_id : clockid_t; 194 tp : access timespec) return int; 195 pragma Import (C, clock_gettime, "clock_gettime"); 196 197 function To_Duration (TS : timespec) return Duration; 198 pragma Inline (To_Duration); 199 200 function To_Timespec (D : Duration) return timespec; 201 pragma Inline (To_Timespec); 202 203 ------------------------- 204 -- Priority Scheduling -- 205 ------------------------- 206 207 SCHED_FIFO : constant := 1; 208 SCHED_RR : constant := 2; 209 SCHED_OTHER : constant := 0; 210 211 function To_Target_Priority 212 (Prio : System.Any_Priority) return Interfaces.C.int; 213 -- Maps System.Any_Priority to a POSIX priority 214 215 ------------- 216 -- Process -- 217 ------------- 218 219 type pid_t is private; 220 221 function kill (pid : pid_t; sig : Signal) return int; 222 pragma Import (C, kill, "kill"); 223 224 function getpid return pid_t; 225 pragma Import (C, getpid, "getpid"); 226 227 --------- 228 -- LWP -- 229 --------- 230 231 function lwp_self return System.Address; 232 pragma Import (C, lwp_self, "_lwp_self"); 233 234 ------------- 235 -- Threads -- 236 ------------- 237 238 type Thread_Body is access 239 function (arg : System.Address) return System.Address; 240 pragma Convention (C, Thread_Body); 241 242 function Thread_Body_Access is new 243 Ada.Unchecked_Conversion (System.Address, Thread_Body); 244 245 type pthread_t is private; 246 subtype Thread_Id is pthread_t; 247 248 type pthread_mutex_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_condattr_t is limited private; 253 type pthread_key_t is private; 254 255 -- Read/Write lock not supported on Solaris. To add support both types 256 -- pthread_rwlock_t and pthread_rwlockattr_t must properly be defined 257 -- with the associated routines pthread_rwlock_[init/destroy] and 258 -- pthread_rwlock_[rdlock/wrlock/unlock]. 259 260 subtype pthread_rwlock_t is pthread_mutex_t; 261 subtype pthread_rwlockattr_t is pthread_mutexattr_t; 262 263 PTHREAD_CREATE_DETACHED : constant := 16#40#; 264 265 PTHREAD_SCOPE_PROCESS : constant := 0; 266 PTHREAD_SCOPE_SYSTEM : constant := 1; 267 268 ----------- 269 -- Stack -- 270 ----------- 271 272 type stack_t is record 273 ss_sp : System.Address; 274 ss_size : size_t; 275 ss_flags : int; 276 end record; 277 pragma Convention (C, stack_t); 278 279 function sigaltstack 280 (ss : not null access stack_t; 281 oss : access stack_t) return int; 282 pragma Import (C, sigaltstack, "sigaltstack"); 283 284 Alternate_Stack : aliased System.Address; 285 -- This is a dummy definition, never used (Alternate_Stack_Size is null) 286 287 Alternate_Stack_Size : constant := 0; 288 -- No alternate signal stack is used on this platform 289 290 Stack_Base_Available : constant Boolean := False; 291 -- Indicates whether the stack base is available on this target 292 293 function Get_Stack_Base (thread : pthread_t) return Address; 294 pragma Inline (Get_Stack_Base); 295 -- Returns the stack base of the specified thread. Only call this function 296 -- when Stack_Base_Available is True. 297 298 function Get_Page_Size return size_t; 299 function Get_Page_Size return Address; 300 pragma Import (C, Get_Page_Size, "getpagesize"); 301 -- Returns the size of a page 302 303 PROT_NONE : constant := 0; 304 PROT_READ : constant := 1; 305 PROT_WRITE : constant := 2; 306 PROT_EXEC : constant := 4; 307 PROT_ALL : constant := PROT_READ + PROT_WRITE + PROT_EXEC; 308 PROT_ON : constant := PROT_READ; 309 PROT_OFF : constant := PROT_ALL; 310 311 function mprotect (addr : Address; len : size_t; prot : int) return int; 312 pragma Import (C, mprotect); 313 314 --------------------------------------- 315 -- Nonstandard Thread Initialization -- 316 --------------------------------------- 317 318 procedure pthread_init; 319 -- This is a dummy procedure to share some GNULLI files 320 321 ------------------------- 322 -- POSIX.1c Section 3 -- 323 ------------------------- 324 325 function sigwait 326 (set : access sigset_t; 327 sig : access Signal) return int; 328 pragma Import (C, sigwait, "__posix_sigwait"); 329 330 function pthread_kill 331 (thread : pthread_t; 332 sig : Signal) return int; 333 pragma Import (C, pthread_kill, "pthread_kill"); 334 335 function pthread_sigmask 336 (how : int; 337 set : access sigset_t; 338 oset : access sigset_t) return int; 339 pragma Import (C, pthread_sigmask, "pthread_sigmask"); 340 341 -------------------------- 342 -- POSIX.1c Section 11 -- 343 -------------------------- 344 345 function pthread_mutexattr_init 346 (attr : access pthread_mutexattr_t) return int; 347 pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init"); 348 349 function pthread_mutexattr_destroy 350 (attr : access pthread_mutexattr_t) return int; 351 pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy"); 352 353 function pthread_mutex_init 354 (mutex : access pthread_mutex_t; 355 attr : access pthread_mutexattr_t) return int; 356 pragma Import (C, pthread_mutex_init, "pthread_mutex_init"); 357 358 function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int; 359 pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy"); 360 361 function pthread_mutex_lock (mutex : access pthread_mutex_t) return int; 362 pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock"); 363 364 function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int; 365 pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock"); 366 367 function pthread_condattr_init 368 (attr : access pthread_condattr_t) return int; 369 pragma Import (C, pthread_condattr_init, "pthread_condattr_init"); 370 371 function pthread_condattr_destroy 372 (attr : access pthread_condattr_t) return int; 373 pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy"); 374 375 function pthread_cond_init 376 (cond : access pthread_cond_t; 377 attr : access pthread_condattr_t) return int; 378 pragma Import (C, pthread_cond_init, "pthread_cond_init"); 379 380 function pthread_cond_destroy (cond : access pthread_cond_t) return int; 381 pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy"); 382 383 function pthread_cond_signal (cond : access pthread_cond_t) return int; 384 pragma Import (C, pthread_cond_signal, "pthread_cond_signal"); 385 386 function pthread_cond_wait 387 (cond : access pthread_cond_t; 388 mutex : access pthread_mutex_t) return int; 389 pragma Import (C, pthread_cond_wait, "pthread_cond_wait"); 390 391 function pthread_cond_timedwait 392 (cond : access pthread_cond_t; 393 mutex : access pthread_mutex_t; 394 abstime : access timespec) return int; 395 pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait"); 396 397 Relative_Timed_Wait : constant Boolean := False; 398 -- pthread_cond_timedwait requires an absolute delay time 399 400 -------------------------- 401 -- POSIX.1c Section 13 -- 402 -------------------------- 403 404 PTHREAD_PRIO_NONE : constant := 0; 405 PTHREAD_PRIO_INHERIT : constant := 16#10#; 406 PTHREAD_PRIO_PROTECT : constant := 16#20#; 407 408 function pthread_mutexattr_setprotocol 409 (attr : access pthread_mutexattr_t; 410 protocol : int) return int; 411 pragma Import (C, pthread_mutexattr_setprotocol); 412 413 function pthread_mutexattr_setprioceiling 414 (attr : access pthread_mutexattr_t; 415 prioceiling : int) return int; 416 pragma Import (C, pthread_mutexattr_setprioceiling); 417 418 type Array_8_Int is array (0 .. 7) of int; 419 type struct_sched_param is record 420 sched_priority : int; 421 sched_pad : Array_8_Int; 422 end record; 423 424 function pthread_setschedparam 425 (thread : pthread_t; 426 policy : int; 427 param : access struct_sched_param) return int; 428 pragma Import (C, pthread_setschedparam, "pthread_setschedparam"); 429 430 function pthread_attr_setscope 431 (attr : access pthread_attr_t; 432 contentionscope : int) return int; 433 pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope"); 434 435 function pthread_attr_setinheritsched 436 (attr : access pthread_attr_t; 437 inheritsched : int) return int; 438 pragma Import (C, pthread_attr_setinheritsched); 439 440 function pthread_attr_setschedpolicy 441 (attr : access pthread_attr_t; 442 policy : int) return int; 443 pragma Import (C, pthread_attr_setschedpolicy); 444 445 function sched_yield return int; 446 pragma Import (C, sched_yield, "sched_yield"); 447 448 --------------------------- 449 -- P1003.1c - Section 16 -- 450 --------------------------- 451 452 function pthread_attr_init (attributes : access pthread_attr_t) return int; 453 pragma Import (C, pthread_attr_init, "pthread_attr_init"); 454 455 function pthread_attr_destroy 456 (attributes : access pthread_attr_t) return int; 457 pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy"); 458 459 function pthread_attr_setdetachstate 460 (attr : access pthread_attr_t; 461 detachstate : int) return int; 462 pragma Import (C, pthread_attr_setdetachstate); 463 464 function pthread_attr_setstacksize 465 (attr : access pthread_attr_t; 466 stacksize : size_t) return int; 467 pragma Import (C, pthread_attr_setstacksize); 468 469 function pthread_create 470 (thread : access pthread_t; 471 attributes : access pthread_attr_t; 472 start_routine : Thread_Body; 473 arg : System.Address) return int; 474 pragma Import (C, pthread_create, "pthread_create"); 475 476 procedure pthread_exit (status : System.Address); 477 pragma Import (C, pthread_exit, "pthread_exit"); 478 479 function pthread_self return pthread_t; 480 pragma Import (C, pthread_self, "pthread_self"); 481 482 -------------------------- 483 -- POSIX.1c Section 17 -- 484 -------------------------- 485 486 function pthread_setspecific 487 (key : pthread_key_t; 488 value : System.Address) return int; 489 pragma Import (C, pthread_setspecific, "pthread_setspecific"); 490 491 function pthread_getspecific (key : pthread_key_t) return System.Address; 492 pragma Import (C, pthread_getspecific, "pthread_getspecific"); 493 494 type destructor_pointer is access procedure (arg : System.Address); 495 pragma Convention (C, destructor_pointer); 496 497 function pthread_key_create 498 (key : access pthread_key_t; 499 destructor : destructor_pointer) return int; 500 pragma Import (C, pthread_key_create, "pthread_key_create"); 501 502private 503 504 type array_type_1 is array (Integer range 0 .. 3) of unsigned_long; 505 type sigset_t is record 506 X_X_sigbits : array_type_1; 507 end record; 508 pragma Convention (C, sigset_t); 509 510 type pid_t is new long; 511 512 type time_t is new long; 513 514 type timespec is record 515 tv_sec : time_t; 516 tv_nsec : long; 517 end record; 518 pragma Convention (C, timespec); 519 520 type pthread_attr_t is record 521 pthread_attrp : System.Address; 522 end record; 523 pragma Convention (C, pthread_attr_t); 524 525 type pthread_condattr_t is record 526 pthread_condattrp : System.Address; 527 end record; 528 pragma Convention (C, pthread_condattr_t); 529 530 type pthread_mutexattr_t is record 531 pthread_mutexattrp : System.Address; 532 end record; 533 pragma Convention (C, pthread_mutexattr_t); 534 535 type pthread_t is new unsigned; 536 537 type uint64_t is mod 2 ** 64; 538 539 type pthread_mutex_t is record 540 pthread_mutex_flags : uint64_t; 541 pthread_mutex_owner64 : uint64_t; 542 pthread_mutex_data : uint64_t; 543 end record; 544 pragma Convention (C, pthread_mutex_t); 545 type pthread_mutex_t_ptr is access pthread_mutex_t; 546 547 type pthread_cond_t is record 548 pthread_cond_flags : uint64_t; 549 pthread_cond_data : uint64_t; 550 end record; 551 pragma Convention (C, pthread_cond_t); 552 553 type pthread_key_t is new unsigned; 554 555end System.OS_Interface; 556