1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
5 -- S Y S T E M . O S _ I N T E R F A C E --
9 -- Copyright (C) 1991-1994, Florida State University --
10 -- Copyright (C) 1995-2011, Free Software Foundation, Inc. --
12 -- GNARL 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 2, or (at your option) any later ver- --
15 -- sion. GNARL 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. See the GNU General Public License --
18 -- for more details. You should have received a copy of the GNU General --
19 -- Public License distributed with GNARL; see file COPYING. If not, write --
20 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
21 -- Boston, MA 02110-1301, USA. --
23 -- As a special exception, if other files instantiate generics from this --
24 -- unit, or you link this unit with other files to produce an executable, --
25 -- this unit does not by itself cause the resulting executable to be --
26 -- covered by the GNU General Public License. This exception does not --
27 -- however invalidate any other reasons why the executable file might be --
28 -- covered by the GNU Public License. --
30 -- GNARL was developed by the GNARL team at Florida State University. --
31 -- Extensive contributions were provided by Ada Core Technologies, Inc. --
33 ------------------------------------------------------------------------------
35 -- This is the HP-UX version of this package
37 -- This package encapsulates all direct interfaces to OS services
38 -- that are needed by the tasking run-time (libgnarl).
40 -- PLEASE DO NOT add any with-clauses to this package or remove the pragma
41 -- Preelaborate. This package is designed to be a bottom-level (leaf) package.
43 with Ada.Unchecked_Conversion;
47 package System.OS_Interface is
50 pragma Linker_Options ("-lcma");
52 subtype int is Interfaces.C.int;
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;
66 function errno return int;
67 pragma Import (C, errno, "__get_errno");
69 EAGAIN : constant := 11;
70 EINTR : constant := 4;
71 EINVAL : constant := 22;
72 ENOMEM : constant := 12;
73 ETIME : constant := 52;
74 ETIMEDOUT : constant := 238;
76 FUNC_ERR : constant := -1;
82 Max_Interrupt : constant := 44;
83 type Signal is new int range 0 .. Max_Interrupt;
84 for Signal'Size use int'Size;
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 SIGVTALRM : constant := 20; -- virtual timer alarm
108 SIGPROF : constant := 21; -- profiling timer alarm
109 SIGIO : constant := 22; -- asynchronous I/O
110 SIGPOLL : constant := 22; -- pollable event occurred
111 SIGWINCH : constant := 23; -- window size change
112 SIGSTOP : constant := 24; -- stop (cannot be caught or ignored)
113 SIGTSTP : constant := 25; -- user stop requested from tty
114 SIGCONT : constant := 26; -- stopped process has been continued
115 SIGTTIN : constant := 27; -- background tty read attempted
116 SIGTTOU : constant := 28; -- background tty write attempted
117 SIGURG : constant := 29; -- urgent condition on IO channel
118 SIGLOST : constant := 30; -- remote lock lost (NFS)
119 SIGDIL : constant := 32; -- DIL signal
120 SIGXCPU : constant := 33; -- CPU time limit exceeded (setrlimit)
121 SIGXFSZ : constant := 34; -- file size limit exceeded (setrlimit)
123 SIGADAABORT : constant := SIGABRT;
124 -- Note: on other targets, we usually use SIGABRT, but on HP/UX, it
125 -- appears that SIGABRT can't be used in sigwait(), so we use SIGTERM.
127 type Signal_Set is array (Natural range <>) of Signal;
129 Unmasked : constant Signal_Set :=
130 (SIGBUS, SIGTRAP, SIGTTIN, SIGTTOU, SIGTSTP);
132 Reserved : constant Signal_Set := (SIGKILL, SIGSTOP);
134 type sigset_t is private;
136 type isr_address is access procedure (sig : int);
137 pragma Convention (C, isr_address);
139 function intr_attach (sig : int; handler : isr_address) return long;
141 Intr_Attach_Reset : constant Boolean := True;
142 -- True if intr_attach is reset after an interrupt handler is called
144 function sigaddset (set : access sigset_t; sig : Signal) return int;
145 pragma Import (C, sigaddset, "sigaddset");
147 function sigdelset (set : access sigset_t; sig : Signal) return int;
148 pragma Import (C, sigdelset, "sigdelset");
150 function sigfillset (set : access sigset_t) return int;
151 pragma Import (C, sigfillset, "sigfillset");
153 function sigismember (set : access sigset_t; sig : Signal) return int;
154 pragma Import (C, sigismember, "sigismember");
156 function sigemptyset (set : access sigset_t) return int;
157 pragma Import (C, sigemptyset, "sigemptyset");
159 type Signal_Handler is access procedure (signo : Signal);
161 type struct_sigaction is record
162 sa_handler : System.Address;
166 pragma Convention (C, struct_sigaction);
167 type struct_sigaction_ptr is access all struct_sigaction;
169 SA_RESTART : constant := 16#40#;
170 SA_SIGINFO : constant := 16#10#;
171 SA_ONSTACK : constant := 16#01#;
173 SIG_BLOCK : constant := 0;
174 SIG_UNBLOCK : constant := 1;
175 SIG_SETMASK : constant := 2;
177 SIG_DFL : constant := 0;
178 SIG_IGN : constant := 1;
179 SIG_ERR : constant := -1;
183 act : struct_sigaction_ptr;
184 oact : struct_sigaction_ptr) return int;
185 pragma Import (C, sigaction, "sigaction");
191 type timespec is private;
193 function nanosleep (rqtp, rmtp : access timespec) return int;
194 pragma Import (C, nanosleep);
196 type clockid_t is new int;
198 function Clock_Gettime
199 (Clock_Id : clockid_t; Tp : access timespec) return int;
200 pragma Import (C, Clock_Gettime);
202 function To_Duration (TS : timespec) return Duration;
203 pragma Inline (To_Duration);
205 function To_Timespec (D : Duration) return timespec;
206 pragma Inline (To_Timespec);
208 -------------------------
209 -- Priority Scheduling --
210 -------------------------
212 SCHED_FIFO : constant := 0;
213 SCHED_RR : constant := 1;
214 SCHED_OTHER : constant := 2;
220 type pid_t is private;
222 function kill (pid : pid_t; sig : Signal) return int;
223 pragma Import (C, kill, "kill");
225 function getpid return pid_t;
226 pragma Import (C, getpid, "getpid");
232 type Thread_Body is access
233 function (arg : System.Address) return System.Address;
234 pragma Convention (C, Thread_Body);
236 function Thread_Body_Access is new
237 Ada.Unchecked_Conversion (System.Address, Thread_Body);
239 type pthread_t is private;
240 subtype Thread_Id is pthread_t;
242 type pthread_mutex_t is limited private;
243 type pthread_cond_t is limited private;
244 type pthread_attr_t is limited private;
245 type pthread_mutexattr_t is limited private;
246 type pthread_condattr_t is limited private;
247 type pthread_key_t is private;
253 function Get_Stack_Base (thread : pthread_t) return Address;
254 pragma Inline (Get_Stack_Base);
255 -- This is a dummy procedure to share some GNULLI files
257 ---------------------------------------
258 -- Nonstandard Thread Initialization --
259 ---------------------------------------
261 procedure pthread_init;
262 pragma Inline (pthread_init);
263 -- This is a dummy procedure to share some GNULLI files
265 -------------------------
266 -- POSIX.1c Section 3 --
267 -------------------------
269 function sigwait (set : access sigset_t) return int;
270 pragma Import (C, sigwait, "cma_sigwait");
273 (set : access sigset_t;
274 sig : access Signal) return int;
275 pragma Inline (sigwait);
276 -- DCE_THREADS has a nonstandard sigwait
278 function pthread_kill
280 sig : Signal) return int;
281 pragma Inline (pthread_kill);
282 -- DCE_THREADS doesn't have pthread_kill
284 function pthread_sigmask
286 set : access sigset_t;
287 oset : access sigset_t) return int;
288 -- DCE THREADS does not have pthread_sigmask. Instead, it uses sigprocmask
289 -- to do the signal handling when the thread library is sucked in.
290 pragma Import (C, pthread_sigmask, "sigprocmask");
292 --------------------------
293 -- POSIX.1c Section 11 --
294 --------------------------
296 function pthread_mutexattr_init
297 (attr : access pthread_mutexattr_t) return int;
298 -- DCE_THREADS has a nonstandard pthread_mutexattr_init
300 function pthread_mutexattr_destroy
301 (attr : access pthread_mutexattr_t) return int;
302 -- DCE_THREADS has a nonstandard pthread_mutexattr_destroy
304 function pthread_mutex_init
305 (mutex : access pthread_mutex_t;
306 attr : access pthread_mutexattr_t) return int;
307 -- DCE_THREADS has a nonstandard pthread_mutex_init
309 function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
310 -- DCE_THREADS has a nonstandard pthread_mutex_destroy
312 function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
313 pragma Inline (pthread_mutex_lock);
314 -- DCE_THREADS has nonstandard pthread_mutex_lock
316 function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
317 pragma Inline (pthread_mutex_unlock);
318 -- DCE_THREADS has nonstandard pthread_mutex_lock
320 function pthread_condattr_init
321 (attr : access pthread_condattr_t) return int;
322 -- DCE_THREADS has nonstandard pthread_condattr_init
324 function pthread_condattr_destroy
325 (attr : access pthread_condattr_t) return int;
326 -- DCE_THREADS has nonstandard pthread_condattr_destroy
328 function pthread_cond_init
329 (cond : access pthread_cond_t;
330 attr : access pthread_condattr_t) return int;
331 -- DCE_THREADS has nonstandard pthread_cond_init
333 function pthread_cond_destroy (cond : access pthread_cond_t) return int;
334 -- DCE_THREADS has nonstandard pthread_cond_destroy
336 function pthread_cond_signal (cond : access pthread_cond_t) return int;
337 pragma Inline (pthread_cond_signal);
338 -- DCE_THREADS has nonstandard pthread_cond_signal
340 function pthread_cond_wait
341 (cond : access pthread_cond_t;
342 mutex : access pthread_mutex_t) return int;
343 pragma Inline (pthread_cond_wait);
344 -- DCE_THREADS has a nonstandard pthread_cond_wait
346 function pthread_cond_timedwait
347 (cond : access pthread_cond_t;
348 mutex : access pthread_mutex_t;
349 abstime : access timespec) return int;
350 pragma Inline (pthread_cond_timedwait);
351 -- DCE_THREADS has a nonstandard pthread_cond_timedwait
353 --------------------------
354 -- POSIX.1c Section 13 --
355 --------------------------
357 type struct_sched_param is record
358 sched_priority : int; -- scheduling priority
361 function pthread_setschedparam
364 param : access struct_sched_param) return int;
365 pragma Inline (pthread_setschedparam);
366 -- DCE_THREADS has a nonstandard pthread_setschedparam
368 function sched_yield return int;
369 pragma Inline (sched_yield);
370 -- DCE_THREADS has a nonstandard sched_yield
372 ---------------------------
373 -- P1003.1c - Section 16 --
374 ---------------------------
376 function pthread_attr_init (attributes : access pthread_attr_t) return int;
377 pragma Inline (pthread_attr_init);
378 -- DCE_THREADS has a nonstandard pthread_attr_init
380 function pthread_attr_destroy
381 (attributes : access pthread_attr_t) return int;
382 pragma Inline (pthread_attr_destroy);
383 -- DCE_THREADS has a nonstandard pthread_attr_destroy
385 function pthread_attr_setstacksize
386 (attr : access pthread_attr_t;
387 stacksize : size_t) return int;
388 pragma Inline (pthread_attr_setstacksize);
389 -- DCE_THREADS has a nonstandard pthread_attr_setstacksize
391 function pthread_create
392 (thread : access pthread_t;
393 attributes : access pthread_attr_t;
394 start_routine : Thread_Body;
395 arg : System.Address) return int;
396 pragma Inline (pthread_create);
397 -- DCE_THREADS has a nonstandard pthread_create
399 procedure pthread_detach (thread : access pthread_t);
400 pragma Import (C, pthread_detach);
402 procedure pthread_exit (status : System.Address);
403 pragma Import (C, pthread_exit, "pthread_exit");
405 function pthread_self return pthread_t;
406 pragma Import (C, pthread_self, "pthread_self");
408 --------------------------
409 -- POSIX.1c Section 17 --
410 --------------------------
412 function pthread_setspecific
413 (key : pthread_key_t;
414 value : System.Address) return int;
415 pragma Inline (pthread_setspecific);
416 -- DCE_THREADS has a nonstandard pthread_setspecific
418 function pthread_getspecific (key : pthread_key_t) return System.Address;
419 pragma Inline (pthread_getspecific);
420 -- DCE_THREADS has a nonstandard pthread_getspecific
422 type destructor_pointer is access procedure (arg : System.Address);
423 pragma Convention (C, destructor_pointer);
425 function pthread_key_create
426 (key : access pthread_key_t;
427 destructor : destructor_pointer) return int;
428 pragma Inline (pthread_key_create);
429 -- DCE_THREADS has a nonstandard pthread_key_create
433 type array_type_1 is array (Integer range 0 .. 7) of unsigned_long;
434 type sigset_t is record
435 X_X_sigbits : array_type_1;
437 pragma Convention (C, sigset_t);
439 type pid_t is new int;
441 type time_t is new long;
443 type timespec is record
447 pragma Convention (C, timespec);
449 type clockid_t is new int;
450 CLOCK_REALTIME : constant clockid_t := 1;
452 type cma_t_address is new System.Address;
454 type cma_t_handle is record
455 field1 : cma_t_address;
456 field2 : Short_Integer;
457 field3 : Short_Integer;
459 for cma_t_handle'Size use 64;
461 type pthread_attr_t is new cma_t_handle;
462 pragma Convention (C_Pass_By_Copy, pthread_attr_t);
464 type pthread_condattr_t is new cma_t_handle;
465 pragma Convention (C_Pass_By_Copy, pthread_condattr_t);
467 type pthread_mutexattr_t is new cma_t_handle;
468 pragma Convention (C_Pass_By_Copy, pthread_mutexattr_t);
470 type pthread_t is new cma_t_handle;
471 pragma Convention (C_Pass_By_Copy, pthread_t);
473 type pthread_mutex_t is new cma_t_handle;
474 pragma Convention (C_Pass_By_Copy, pthread_mutex_t);
476 type pthread_cond_t is new cma_t_handle;
477 pragma Convention (C_Pass_By_Copy, pthread_cond_t);
479 type pthread_key_t is new int;
481 end System.OS_Interface;