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) 2000-2003 Ada Core Technologies, 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 2, or (at your option) any later ver- -- 14-- sion. GNARL 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. See the GNU General Public License -- 17-- for more details. You should have received a copy of the GNU General -- 18-- Public License distributed with GNARL; see file COPYING. If not, write -- 19-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- 20-- MA 02111-1307, USA. -- 21-- -- 22-- As a special exception, if other files instantiate generics from this -- 23-- unit, or you link this unit with other files to produce an executable, -- 24-- this unit does not by itself cause the resulting executable to be -- 25-- covered by the GNU General Public License. This exception does not -- 26-- however invalidate any other reasons why the executable file might be -- 27-- covered by the GNU Public License. -- 28-- -- 29-- GNARL was developed by the GNARL team at Florida State University. -- 30-- Extensive contributions were provided by Ada Core Technologies, Inc. -- 31-- -- 32------------------------------------------------------------------------------ 33 34-- This is a Solaris (POSIX Threads) version of this package. 35 36-- This package encapsulates all direct interfaces to OS services 37-- that are needed by children of System. 38 39-- PLEASE DO NOT add any with-clauses to this package 40-- or remove the pragma Elaborate_Body. 41-- It is designed to be a bottom-level (leaf) package. 42 43with Interfaces.C; 44package System.OS_Interface is 45 pragma Preelaborate; 46 47 pragma Linker_Options ("-lposix4"); 48 pragma Linker_Options ("-lpthread"); 49 50 subtype int is Interfaces.C.int; 51 subtype short is Interfaces.C.short; 52 subtype long is Interfaces.C.long; 53 subtype unsigned is Interfaces.C.unsigned; 54 subtype unsigned_short is Interfaces.C.unsigned_short; 55 subtype unsigned_long is Interfaces.C.unsigned_long; 56 subtype unsigned_char is Interfaces.C.unsigned_char; 57 subtype plain_char is Interfaces.C.plain_char; 58 subtype size_t is Interfaces.C.size_t; 59 60 ----------- 61 -- Errno -- 62 ----------- 63 64 function errno return int; 65 pragma Import (C, errno, "__get_errno"); 66 67 EAGAIN : constant := 11; 68 EINTR : constant := 4; 69 EINVAL : constant := 22; 70 ENOMEM : constant := 12; 71 ETIMEDOUT : constant := 145; 72 73 ------------- 74 -- Signals -- 75 ------------- 76 77 Max_Interrupt : constant := 45; 78 type Signal is new int range 0 .. Max_Interrupt; 79 for Signal'Size use int'Size; 80 81 SIGHUP : constant := 1; -- hangup 82 SIGINT : constant := 2; -- interrupt (rubout) 83 SIGQUIT : constant := 3; -- quit (ASCD FS) 84 SIGILL : constant := 4; -- illegal instruction (not reset) 85 SIGTRAP : constant := 5; -- trace trap (not reset) 86 SIGIOT : constant := 6; -- IOT instruction 87 SIGABRT : constant := 6; -- used by abort, replace SIGIOT in the future 88 SIGEMT : constant := 7; -- EMT instruction 89 SIGFPE : constant := 8; -- floating point exception 90 SIGKILL : constant := 9; -- kill (cannot be caught or ignored) 91 SIGBUS : constant := 10; -- bus error 92 SIGSEGV : constant := 11; -- segmentation violation 93 SIGSYS : constant := 12; -- bad argument to system call 94 SIGPIPE : constant := 13; -- write on a pipe with no one to read it 95 SIGALRM : constant := 14; -- alarm clock 96 SIGTERM : constant := 15; -- software termination signal from kill 97 SIGUSR1 : constant := 16; -- user defined signal 1 98 SIGUSR2 : constant := 17; -- user defined signal 2 99 SIGCLD : constant := 18; -- alias for SIGCHLD 100 SIGCHLD : constant := 18; -- child status change 101 SIGPWR : constant := 19; -- power-fail restart 102 SIGWINCH : constant := 20; -- window size change 103 SIGURG : constant := 21; -- urgent condition on IO channel 104 SIGPOLL : constant := 22; -- pollable event occurred 105 SIGIO : constant := 22; -- I/O possible (Solaris SIGPOLL alias) 106 SIGSTOP : constant := 23; -- stop (cannot be caught or ignored) 107 SIGTSTP : constant := 24; -- user stop requested from tty 108 SIGCONT : constant := 25; -- stopped process has been continued 109 SIGTTIN : constant := 26; -- background tty read attempted 110 SIGTTOU : constant := 27; -- background tty write attempted 111 SIGVTALRM : constant := 28; -- virtual timer expired 112 SIGPROF : constant := 29; -- profiling timer expired 113 SIGXCPU : constant := 30; -- CPU time limit exceeded 114 SIGXFSZ : constant := 31; -- filesize limit exceeded 115 SIGWAITING : constant := 32; -- process's lwps blocked (Solaris) 116 SIGLWP : constant := 33; -- used by thread library (Solaris) 117 SIGFREEZE : constant := 34; -- used by CPR (Solaris) 118 SIGTHAW : constant := 35; -- used by CPR (Solaris) 119 SIGCANCEL : constant := 36; -- thread cancellation signal (libthread) 120 121 SIGADAABORT : constant := SIGABRT; 122 123 type Signal_Set is array (Natural range <>) of Signal; 124 125 Unmasked : constant Signal_Set := (SIGTRAP, SIGLWP, SIGPROF); 126 127 -- Following signals should not be disturbed. 128 -- See c-posix-signals.c in FLORIST 129 130 Reserved : constant Signal_Set := 131 (SIGKILL, SIGSTOP, SIGWAITING, SIGCANCEL); 132 133 type sigset_t is private; 134 135 function sigaddset (set : access sigset_t; sig : Signal) return int; 136 pragma Import (C, sigaddset, "sigaddset"); 137 138 function sigdelset (set : access sigset_t; sig : Signal) return int; 139 pragma Import (C, sigdelset, "sigdelset"); 140 141 function sigfillset (set : access sigset_t) return int; 142 pragma Import (C, sigfillset, "sigfillset"); 143 144 function sigismember (set : access sigset_t; sig : Signal) return int; 145 pragma Import (C, sigismember, "sigismember"); 146 147 function sigemptyset (set : access sigset_t) return int; 148 pragma Import (C, sigemptyset, "sigemptyset"); 149 150 type struct_sigaction is record 151 sa_flags : int; 152 sa_handler : System.Address; 153 sa_mask : sigset_t; 154 sa_resv1 : int; 155 sa_resv2 : int; 156 end record; 157 pragma Convention (C, struct_sigaction); 158 type struct_sigaction_ptr is access all struct_sigaction; 159 160 SA_SIGINFO : constant := 16#0008#; 161 162 SIG_BLOCK : constant := 1; 163 SIG_UNBLOCK : constant := 2; 164 SIG_SETMASK : constant := 3; 165 166 SIG_DFL : constant := 0; 167 SIG_IGN : constant := 1; 168 169 function sigaction 170 (sig : Signal; 171 act : struct_sigaction_ptr; 172 oact : struct_sigaction_ptr) return int; 173 pragma Import (C, sigaction, "sigaction"); 174 175 ---------- 176 -- Time -- 177 ---------- 178 179 Time_Slice_Supported : constant Boolean := True; 180 -- Indicates wether time slicing is supported 181 182 type timespec is private; 183 184 type clockid_t is private; 185 186 CLOCK_REALTIME : constant clockid_t; 187 188 function clock_gettime 189 (clock_id : clockid_t; 190 tp : access timespec) return int; 191 pragma Import (C, clock_gettime, "clock_gettime"); 192 193 function To_Duration (TS : timespec) return Duration; 194 pragma Inline (To_Duration); 195 196 function To_Timespec (D : Duration) return timespec; 197 pragma Inline (To_Timespec); 198 199 type struct_timeval is private; 200 201 function To_Duration (TV : struct_timeval) return Duration; 202 pragma Inline (To_Duration); 203 204 function To_Timeval (D : Duration) return struct_timeval; 205 pragma Inline (To_Timeval); 206 207 ------------------------- 208 -- Priority Scheduling -- 209 ------------------------- 210 211 SCHED_FIFO : constant := 1; 212 SCHED_RR : constant := 2; 213 SCHED_OTHER : constant := 0; 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 type pthread_t is private; 241 subtype Thread_Id is pthread_t; 242 243 type pthread_mutex_t is limited private; 244 type pthread_cond_t is limited private; 245 type pthread_attr_t is limited private; 246 type pthread_mutexattr_t is limited private; 247 type pthread_condattr_t is limited private; 248 type pthread_key_t is private; 249 250 PTHREAD_CREATE_DETACHED : constant := 16#40#; 251 252 ----------- 253 -- Stack -- 254 ----------- 255 256 Stack_Base_Available : constant Boolean := False; 257 -- Indicates wether the stack base is available on this target. 258 259 function Get_Stack_Base (thread : pthread_t) return Address; 260 pragma Inline (Get_Stack_Base); 261 -- returns the stack base of the specified thread. 262 -- Only call this function when Stack_Base_Available is True. 263 264 function Get_Page_Size return size_t; 265 function Get_Page_Size return Address; 266 pragma Import (C, Get_Page_Size, "getpagesize"); 267 -- returns the size of a page, or 0 if this is not relevant on this 268 -- target 269 270 PROT_NONE : constant := 0; 271 PROT_READ : constant := 1; 272 PROT_WRITE : constant := 2; 273 PROT_EXEC : constant := 4; 274 PROT_ALL : constant := PROT_READ + PROT_WRITE + PROT_EXEC; 275 276 PROT_ON : constant := PROT_READ; 277 PROT_OFF : constant := PROT_ALL; 278 279 function mprotect (addr : Address; len : size_t; prot : int) return int; 280 pragma Import (C, mprotect); 281 282 --------------------------------------- 283 -- Nonstandard Thread Initialization -- 284 --------------------------------------- 285 286 procedure pthread_init; 287 -- This is a dummy procedure to share some GNULLI files 288 289 ------------------------- 290 -- POSIX.1c Section 3 -- 291 ------------------------- 292 293 function sigwait 294 (set : access sigset_t; 295 sig : access Signal) return int; 296 pragma Import (C, sigwait, "__posix_sigwait"); 297 298 function pthread_kill 299 (thread : pthread_t; 300 sig : Signal) return int; 301 pragma Import (C, pthread_kill, "pthread_kill"); 302 303 type sigset_t_ptr is access all sigset_t; 304 305 function pthread_sigmask 306 (how : int; 307 set : sigset_t_ptr; 308 oset : sigset_t_ptr) return int; 309 pragma Import (C, pthread_sigmask, "pthread_sigmask"); 310 311 -------------------------- 312 -- POSIX.1c Section 11 -- 313 -------------------------- 314 315 function pthread_mutexattr_init 316 (attr : access pthread_mutexattr_t) return int; 317 pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init"); 318 319 function pthread_mutexattr_destroy 320 (attr : access pthread_mutexattr_t) return int; 321 pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy"); 322 323 function pthread_mutex_init 324 (mutex : access pthread_mutex_t; 325 attr : access pthread_mutexattr_t) return int; 326 pragma Import (C, pthread_mutex_init, "pthread_mutex_init"); 327 328 function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int; 329 pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy"); 330 331 function pthread_mutex_lock (mutex : access pthread_mutex_t) return int; 332 pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock"); 333 334 function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int; 335 pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock"); 336 337 function pthread_condattr_init 338 (attr : access pthread_condattr_t) return int; 339 pragma Import (C, pthread_condattr_init, "pthread_condattr_init"); 340 341 function pthread_condattr_destroy 342 (attr : access pthread_condattr_t) return int; 343 pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy"); 344 345 function pthread_cond_init 346 (cond : access pthread_cond_t; 347 attr : access pthread_condattr_t) return int; 348 pragma Import (C, pthread_cond_init, "pthread_cond_init"); 349 350 function pthread_cond_destroy (cond : access pthread_cond_t) return int; 351 pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy"); 352 353 function pthread_cond_signal (cond : access pthread_cond_t) return int; 354 pragma Import (C, pthread_cond_signal, "pthread_cond_signal"); 355 356 function pthread_cond_wait 357 (cond : access pthread_cond_t; 358 mutex : access pthread_mutex_t) return int; 359 pragma Import (C, pthread_cond_wait, "pthread_cond_wait"); 360 361 function pthread_cond_timedwait 362 (cond : access pthread_cond_t; 363 mutex : access pthread_mutex_t; 364 abstime : access timespec) return int; 365 pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait"); 366 367 Relative_Timed_Wait : constant Boolean := False; 368 -- pthread_cond_timedwait requires an absolute delay time 369 370 -------------------------- 371 -- POSIX.1c Section 13 -- 372 -------------------------- 373 374 PTHREAD_PRIO_NONE : constant := 0; 375 PTHREAD_PRIO_INHERIT : constant := 16#10#; 376 PTHREAD_PRIO_PROTECT : constant := 16#20#; 377 378 function pthread_mutexattr_setprotocol 379 (attr : access pthread_mutexattr_t; 380 protocol : int) return int; 381 pragma Import (C, pthread_mutexattr_setprotocol); 382 383 function pthread_mutexattr_setprioceiling 384 (attr : access pthread_mutexattr_t; 385 prioceiling : int) return int; 386 pragma Import (C, pthread_mutexattr_setprioceiling); 387 388 type Array_8_Int is array (0 .. 7) of int; 389 type struct_sched_param is record 390 sched_priority : int; 391 sched_pad : Array_8_Int; 392 end record; 393 394 function pthread_setschedparam 395 (thread : pthread_t; 396 policy : int; 397 param : access struct_sched_param) return int; 398 pragma Import (C, pthread_setschedparam, "pthread_setschedparam"); 399 400 function pthread_attr_setscope 401 (attr : access pthread_attr_t; 402 contentionscope : int) return int; 403 pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope"); 404 405 function pthread_attr_setinheritsched 406 (attr : access pthread_attr_t; 407 inheritsched : int) return int; 408 pragma Import (C, pthread_attr_setinheritsched); 409 410 function pthread_attr_setschedpolicy 411 (attr : access pthread_attr_t; 412 policy : int) return int; 413 pragma Import (C, pthread_attr_setschedpolicy); 414 415 function sched_yield return int; 416 pragma Import (C, sched_yield, "sched_yield"); 417 418 --------------------------- 419 -- P1003.1c - Section 16 -- 420 --------------------------- 421 422 function pthread_attr_init (attributes : access pthread_attr_t) return int; 423 pragma Import (C, pthread_attr_init, "pthread_attr_init"); 424 425 function pthread_attr_destroy 426 (attributes : access pthread_attr_t) return int; 427 pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy"); 428 429 function pthread_attr_setdetachstate 430 (attr : access pthread_attr_t; 431 detachstate : int) return int; 432 pragma Import (C, pthread_attr_setdetachstate); 433 434 function pthread_attr_setstacksize 435 (attr : access pthread_attr_t; 436 stacksize : size_t) return int; 437 pragma Import (C, pthread_attr_setstacksize); 438 439 function pthread_create 440 (thread : access pthread_t; 441 attributes : access pthread_attr_t; 442 start_routine : Thread_Body; 443 arg : System.Address) return int; 444 pragma Import (C, pthread_create, "pthread_create"); 445 446 procedure pthread_exit (status : System.Address); 447 pragma Import (C, pthread_exit, "pthread_exit"); 448 449 function pthread_self return pthread_t; 450 pragma Import (C, pthread_self, "pthread_self"); 451 452 -------------------------- 453 -- POSIX.1c Section 17 -- 454 -------------------------- 455 456 function pthread_setspecific 457 (key : pthread_key_t; 458 value : System.Address) return int; 459 pragma Import (C, pthread_setspecific, "pthread_setspecific"); 460 461 function pthread_getspecific (key : pthread_key_t) return System.Address; 462 pragma Import (C, pthread_getspecific, "pthread_getspecific"); 463 464 type destructor_pointer is access procedure (arg : System.Address); 465 466 function pthread_key_create 467 (key : access pthread_key_t; 468 destructor : destructor_pointer) return int; 469 pragma Import (C, pthread_key_create, "pthread_key_create"); 470 471private 472 473 type array_type_1 is array (Integer range 0 .. 3) of unsigned_long; 474 type sigset_t is record 475 X_X_sigbits : array_type_1; 476 end record; 477 pragma Convention (C, sigset_t); 478 479 type pid_t is new long; 480 481 type time_t is new long; 482 483 type timespec is record 484 tv_sec : time_t; 485 tv_nsec : long; 486 end record; 487 pragma Convention (C, timespec); 488 489 type clockid_t is new int; 490 CLOCK_REALTIME : constant clockid_t := 0; 491 492 type struct_timeval is record 493 tv_sec : time_t; 494 tv_usec : time_t; 495 end record; 496 pragma Convention (C, struct_timeval); 497 498 type pthread_attr_t is record 499 pthread_attrp : System.Address; 500 end record; 501 pragma Convention (C, pthread_attr_t); 502 503 type pthread_condattr_t is record 504 pthread_condattrp : System.Address; 505 end record; 506 pragma Convention (C, pthread_condattr_t); 507 508 type pthread_mutexattr_t is record 509 pthread_mutexattrp : System.Address; 510 end record; 511 pragma Convention (C, pthread_mutexattr_t); 512 513 type pthread_t is new unsigned; 514 515 type uint64_t is mod 2 ** 64; 516 517 type pthread_mutex_t is record 518 pthread_mutex_flags : uint64_t; 519 pthread_mutex_owner64 : uint64_t; 520 pthread_mutex_data : uint64_t; 521 end record; 522 pragma Convention (C, pthread_mutex_t); 523 type pthread_mutex_t_ptr is access pthread_mutex_t; 524 525 type pthread_cond_t is record 526 pthread_cond_flags : uint64_t; 527 pthread_cond_data : uint64_t; 528 end record; 529 pragma Convention (C, pthread_cond_t); 530 531 type pthread_key_t is new unsigned; 532 533end System.OS_Interface; 534