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) 1998-2001, Free Software Foundation, 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 the SGI Pthreads 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 46 pragma Preelaborate; 47 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 EINTR : constant := 4; -- interrupted system call 68 EAGAIN : constant := 11; -- No more processes 69 ENOMEM : constant := 12; -- Not enough core 70 EINVAL : constant := 22; -- Invalid argument 71 ETIMEDOUT : constant := 145; -- Connection timed out 72 73 ------------- 74 -- Signals -- 75 ------------- 76 77 Max_Interrupt : constant := 64; 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 88 -- future 89 SIGEMT : constant := 7; -- EMT instruction 90 SIGFPE : constant := 8; -- floating point exception 91 SIGKILL : constant := 9; -- kill (cannot be caught or ignored) 92 SIGBUS : constant := 10; -- bus error 93 SIGSEGV : constant := 11; -- segmentation violation 94 SIGSYS : constant := 12; -- bad argument to system call 95 SIGPIPE : constant := 13; -- write on a pipe with no one to read it 96 SIGALRM : constant := 14; -- alarm clock 97 SIGTERM : constant := 15; -- software termination signal from kill 98 SIGUSR1 : constant := 16; -- user defined signal 1 99 SIGUSR2 : constant := 17; -- user defined signal 2 100 SIGCLD : constant := 18; -- alias for SIGCHLD 101 SIGCHLD : constant := 18; -- child status change 102 SIGPWR : constant := 19; -- power-fail restart 103 SIGWINCH : constant := 20; -- window size change 104 SIGURG : constant := 21; -- urgent condition on IO channel 105 SIGPOLL : constant := 22; -- pollable event occurred 106 SIGIO : constant := 22; -- I/O possible (Solaris SIGPOLL alias) 107 SIGSTOP : constant := 23; -- stop (cannot be caught or ignored) 108 SIGTSTP : constant := 24; -- user stop requested from tty 109 SIGCONT : constant := 25; -- stopped process has been continued 110 SIGTTIN : constant := 26; -- background tty read attempted 111 SIGTTOU : constant := 27; -- background tty write attempted 112 SIGVTALRM : constant := 28; -- virtual timer expired 113 SIGPROF : constant := 29; -- profiling timer expired 114 SIGXCPU : constant := 30; -- CPU time limit exceeded 115 SIGXFSZ : constant := 31; -- filesize limit exceeded 116 SIGK32 : constant := 32; -- reserved for kernel (IRIX) 117 SIGCKPT : constant := 33; -- Checkpoint warning 118 SIGRESTART : constant := 34; -- Restart warning 119 SIGUME : constant := 35; -- Uncorrectable memory error 120 -- Signals defined for Posix 1003.1c. 121 SIGPTINTR : constant := 47; 122 SIGPTRESCHED : constant := 48; 123 -- Posix 1003.1b signals 124 SIGRTMIN : constant := 49; -- Posix 1003.1b signals 125 SIGRTMAX : constant := 64; -- Posix 1003.1b signals 126 127 type sigset_t is private; 128 type sigset_t_ptr is access all sigset_t; 129 130 function sigaddset (set : access sigset_t; sig : Signal) return int; 131 pragma Import (C, sigaddset, "sigaddset"); 132 133 function sigdelset (set : access sigset_t; sig : Signal) return int; 134 pragma Import (C, sigdelset, "sigdelset"); 135 136 function sigfillset (set : access sigset_t) return int; 137 pragma Import (C, sigfillset, "sigfillset"); 138 139 function sigismember (set : access sigset_t; sig : Signal) return int; 140 pragma Import (C, sigismember, "sigismember"); 141 142 function sigemptyset (set : access sigset_t) return int; 143 pragma Import (C, sigemptyset, "sigemptyset"); 144 145 type array_type_2 is array (Integer range 0 .. 1) of int; 146 type struct_sigaction is record 147 sa_flags : int; 148 sa_handler : System.Address; 149 sa_mask : sigset_t; 150 sa_resv : array_type_2; 151 end record; 152 pragma Convention (C, struct_sigaction); 153 154 type struct_sigaction_ptr is access all struct_sigaction; 155 156 SIG_BLOCK : constant := 1; 157 SIG_UNBLOCK : constant := 2; 158 SIG_SETMASK : constant := 3; 159 160 SIG_DFL : constant := 0; 161 SIG_IGN : constant := 1; 162 163 function sigaction 164 (sig : Signal; 165 act : struct_sigaction_ptr; 166 oact : struct_sigaction_ptr := null) return int; 167 pragma Import (C, sigaction, "sigaction"); 168 169 ---------- 170 -- Time -- 171 ---------- 172 173 type timespec is private; 174 type timespec_ptr is access all timespec; 175 176 type clockid_t is private; 177 178 CLOCK_REALTIME : constant clockid_t; 179 CLOCK_SGI_FAST : constant clockid_t; 180 CLOCK_SGI_CYCLE : constant clockid_t; 181 182 SGI_CYCLECNTR_SIZE : constant := 165; 183 184 function syssgi (request : Interfaces.C.int) return Interfaces.C.ptrdiff_t; 185 pragma Import (C, syssgi, "syssgi"); 186 187 function clock_gettime 188 (clock_id : clockid_t; 189 tp : access timespec) return int; 190 pragma Import (C, clock_gettime, "clock_gettime"); 191 192 function clock_getres 193 (clock_id : clockid_t; 194 tp : access timespec) return int; 195 pragma Import (C, clock_getres, "clock_getres"); 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 type struct_timeval is private; 204 205 function To_Duration (TV : struct_timeval) return Duration; 206 pragma Inline (To_Duration); 207 208 function To_Timeval (D : Duration) return struct_timeval; 209 pragma Inline (To_Timeval); 210 211 ------------------------- 212 -- Priority Scheduling -- 213 ------------------------- 214 215 SCHED_FIFO : constant := 1; 216 SCHED_RR : constant := 2; 217 SCHED_TS : constant := 3; 218 SCHED_OTHER : constant := 3; 219 SCHED_NP : constant := 4; 220 221 function sched_get_priority_min (Policy : int) return int; 222 pragma Import (C, sched_get_priority_min, "sched_get_priority_min"); 223 224 function sched_get_priority_max (Policy : int) return int; 225 pragma Import (C, sched_get_priority_max, "sched_get_priority_max"); 226 227 ------------- 228 -- Process -- 229 ------------- 230 231 type pid_t is private; 232 233 function kill (pid : pid_t; sig : Signal) return int; 234 pragma Import (C, kill, "kill"); 235 236 function getpid return pid_t; 237 pragma Import (C, getpid, "getpid"); 238 239 ------------- 240 -- Threads -- 241 ------------- 242 243 type Thread_Body is access 244 function (arg : System.Address) return System.Address; 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 PTHREAD_CREATE_DETACHED : constant := 1; 256 257 --------------------------------------- 258 -- Nonstandard Thread Initialization -- 259 --------------------------------------- 260 261 procedure pthread_init; 262 pragma Inline (pthread_init); 263 -- This is a dummy procedure to share some GNULLI files 264 265 ------------------------- 266 -- POSIX.1c Section 3 -- 267 ------------------------- 268 269 function sigwait 270 (set : access sigset_t; 271 sig : access Signal) return int; 272 pragma Import (C, sigwait, "sigwait"); 273 274 function pthread_kill 275 (thread : pthread_t; 276 sig : Signal) return int; 277 pragma Import (C, pthread_kill, "pthread_kill"); 278 279 function pthread_sigmask 280 (how : int; 281 set : sigset_t_ptr; 282 oset : sigset_t_ptr) return int; 283 pragma Import (C, pthread_sigmask, "pthread_sigmask"); 284 285 -------------------------- 286 -- POSIX.1c Section 11 -- 287 -------------------------- 288 289 function pthread_mutexattr_init 290 (attr : access pthread_mutexattr_t) return int; 291 pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init"); 292 293 function pthread_mutexattr_destroy 294 (attr : access pthread_mutexattr_t) return int; 295 pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy"); 296 297 function pthread_mutex_init 298 (mutex : access pthread_mutex_t; 299 attr : access pthread_mutexattr_t) return int; 300 pragma Import (C, pthread_mutex_init, "pthread_mutex_init"); 301 302 function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int; 303 pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy"); 304 305 function pthread_mutex_lock (mutex : access pthread_mutex_t) return int; 306 pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock"); 307 308 function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int; 309 pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock"); 310 311 function pthread_condattr_init 312 (attr : access pthread_condattr_t) return int; 313 pragma Import (C, pthread_condattr_init, "pthread_condattr_init"); 314 315 function pthread_condattr_destroy 316 (attr : access pthread_condattr_t) return int; 317 pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy"); 318 319 function pthread_cond_init 320 (cond : access pthread_cond_t; 321 attr : access pthread_condattr_t) return int; 322 pragma Import (C, pthread_cond_init, "pthread_cond_init"); 323 324 function pthread_cond_destroy (cond : access pthread_cond_t) return int; 325 pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy"); 326 327 function pthread_cond_signal (cond : access pthread_cond_t) return int; 328 pragma Import (C, pthread_cond_signal, "pthread_cond_signal"); 329 330 function pthread_cond_wait 331 (cond : access pthread_cond_t; 332 mutex : access pthread_mutex_t) return int; 333 pragma Import (C, pthread_cond_wait, "pthread_cond_wait"); 334 335 function pthread_cond_timedwait 336 (cond : access pthread_cond_t; 337 mutex : access pthread_mutex_t; 338 abstime : access timespec) return int; 339 pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait"); 340 341 -------------------------- 342 -- POSIX.1c Section 13 -- 343 -------------------------- 344 345 PTHREAD_PRIO_NONE : constant := 0; 346 PTHREAD_PRIO_PROTECT : constant := 2; 347 PTHREAD_PRIO_INHERIT : constant := 1; 348 349 function pthread_mutexattr_setprotocol 350 (attr : access pthread_mutexattr_t; 351 protocol : int) return int; 352 pragma Import (C, pthread_mutexattr_setprotocol); 353 354 function pthread_mutexattr_setprioceiling 355 (attr : access pthread_mutexattr_t; 356 prioceiling : int) return int; 357 pragma Import (C, pthread_mutexattr_setprioceiling); 358 359 type struct_sched_param is record 360 sched_priority : int; 361 end record; 362 pragma Convention (C, struct_sched_param); 363 364 function pthread_setschedparam 365 (thread : pthread_t; 366 policy : int; 367 param : access struct_sched_param) 368 return int; 369 pragma Import (C, pthread_setschedparam, "pthread_setschedparam"); 370 371 function pthread_attr_setscope 372 (attr : access pthread_attr_t; 373 contentionscope : int) return int; 374 pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope"); 375 376 function pthread_attr_setinheritsched 377 (attr : access pthread_attr_t; 378 inheritsched : int) return int; 379 pragma Import 380 (C, pthread_attr_setinheritsched, "pthread_attr_setinheritsched"); 381 382 function pthread_attr_setschedpolicy 383 (attr : access pthread_attr_t; 384 policy : int) return int; 385 pragma Import (C, pthread_attr_setschedpolicy); 386 387 function pthread_attr_setschedparam 388 (attr : access pthread_attr_t; 389 sched_param : access struct_sched_param) 390 return int; 391 pragma Import (C, pthread_attr_setschedparam, "pthread_attr_setschedparam"); 392 393 function sched_yield return int; 394 pragma Import (C, sched_yield, "sched_yield"); 395 396 --------------------------- 397 -- P1003.1c - Section 16 -- 398 --------------------------- 399 400 function pthread_attr_init (attributes : access pthread_attr_t) return int; 401 pragma Import (C, pthread_attr_init, "pthread_attr_init"); 402 403 function pthread_attr_destroy 404 (attributes : access pthread_attr_t) return int; 405 pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy"); 406 407 function pthread_attr_setdetachstate 408 (attr : access pthread_attr_t; 409 detachstate : int) return int; 410 pragma Import (C, pthread_attr_setdetachstate); 411 412 function pthread_attr_setstacksize 413 (attr : access pthread_attr_t; 414 stacksize : size_t) return int; 415 pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize"); 416 417 function pthread_create 418 (thread : access pthread_t; 419 attributes : access pthread_attr_t; 420 start_routine : Thread_Body; 421 arg : System.Address) return int; 422 pragma Import (C, pthread_create, "pthread_create"); 423 424 procedure pthread_exit (status : System.Address); 425 pragma Import (C, pthread_exit, "pthread_exit"); 426 427 function pthread_self return pthread_t; 428 pragma Import (C, pthread_self, "pthread_self"); 429 430 -------------------------- 431 -- POSIX.1c Section 17 -- 432 -------------------------- 433 434 function pthread_setspecific 435 (key : pthread_key_t; 436 value : System.Address) return int; 437 pragma Import (C, pthread_setspecific, "pthread_setspecific"); 438 439 function pthread_getspecific (key : pthread_key_t) return System.Address; 440 pragma Import (C, pthread_getspecific, "pthread_getspecific"); 441 442 type destructor_pointer is access procedure (arg : System.Address); 443 444 function pthread_key_create 445 (key : access pthread_key_t; 446 destructor : destructor_pointer) return int; 447 pragma Import (C, pthread_key_create, "pthread_key_create"); 448 449 --------------------------------------------------------------- 450 -- Non portable SGI 6.5 additions to the pthread interface -- 451 -- must be executed from within the context of a system -- 452 -- scope task -- 453 --------------------------------------------------------------- 454 455 function pthread_setrunon_np (cpu : int) return int; 456 pragma Import (C, pthread_setrunon_np, "pthread_setrunon_np"); 457 458private 459 460 type array_type_1 is array (Integer range 0 .. 3) of unsigned; 461 type sigset_t is record 462 X_X_sigbits : array_type_1; 463 end record; 464 pragma Convention (C, sigset_t); 465 466 type pid_t is new long; 467 468 type time_t is new long; 469 470 type timespec is record 471 tv_sec : time_t; 472 tv_nsec : long; 473 end record; 474 pragma Convention (C, timespec); 475 476 type clockid_t is new int; 477 CLOCK_REALTIME : constant clockid_t := 1; 478 CLOCK_SGI_CYCLE : constant clockid_t := 2; 479 CLOCK_SGI_FAST : constant clockid_t := 3; 480 481 type struct_timeval is record 482 tv_sec : time_t; 483 tv_usec : time_t; 484 end record; 485 pragma Convention (C, struct_timeval); 486 487 type array_type_9 is array (Integer range 0 .. 4) of long; 488 type pthread_attr_t is record 489 X_X_D : array_type_9; 490 end record; 491 pragma Convention (C, pthread_attr_t); 492 493 type array_type_8 is array (Integer range 0 .. 1) of long; 494 type pthread_condattr_t is record 495 X_X_D : array_type_8; 496 end record; 497 pragma Convention (C, pthread_condattr_t); 498 499 type array_type_7 is array (Integer range 0 .. 1) of long; 500 type pthread_mutexattr_t is record 501 X_X_D : array_type_7; 502 end record; 503 pragma Convention (C, pthread_mutexattr_t); 504 505 type pthread_t is new unsigned; 506 507 type array_type_10 is array (Integer range 0 .. 7) of long; 508 type pthread_mutex_t is record 509 X_X_D : array_type_10; 510 end record; 511 pragma Convention (C, pthread_mutex_t); 512 513 type array_type_11 is array (Integer range 0 .. 7) of long; 514 type pthread_cond_t is record 515 X_X_D : array_type_11; 516 end record; 517 pragma Convention (C, pthread_cond_t); 518 519 type pthread_key_t is new int; 520 521end System.OS_Interface; 522