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) 1995-2015, Free Software Foundation, Inc. --
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. --
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. --
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/>. --
28 -- GNARL was developed by the GNARL team at Florida State University. --
29 -- Extensive contributions were provided by Ada Core Technologies, Inc. --
31 ------------------------------------------------------------------------------
33 -- This is a GNU/Linux (GNU/LinuxThreads) version of this package
35 -- This package encapsulates all direct interfaces to OS services
36 -- that are needed by the tasking run-time (libgnarl).
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.
41 with Ada
.Unchecked_Conversion
;
44 with System
.OS_Constants
;
46 package System
.OS_Interface
is
49 pragma Linker_Options
("-lpthread");
50 pragma Linker_Options
("-lrt");
51 -- Needed for clock_getres with glibc versions prior to 2.17
53 subtype int
is Interfaces
.C
.int
;
54 subtype char
is Interfaces
.C
.char
;
55 subtype short
is Interfaces
.C
.short
;
56 subtype long
is Interfaces
.C
.long
;
57 subtype unsigned
is Interfaces
.C
.unsigned
;
58 subtype unsigned_short
is Interfaces
.C
.unsigned_short
;
59 subtype unsigned_long
is Interfaces
.C
.unsigned_long
;
60 subtype unsigned_char
is Interfaces
.C
.unsigned_char
;
61 subtype plain_char
is Interfaces
.C
.plain_char
;
62 subtype size_t
is Interfaces
.C
.size_t
;
68 function errno
return int
;
69 pragma Import
(C
, errno
, "__get_errno");
71 EAGAIN
: constant := System
.Linux
.EAGAIN
;
72 EINTR
: constant := System
.Linux
.EINTR
;
73 EINVAL
: constant := System
.Linux
.EINVAL
;
74 ENOMEM
: constant := System
.Linux
.ENOMEM
;
75 EPERM
: constant := System
.Linux
.EPERM
;
76 ETIMEDOUT
: constant := System
.Linux
.ETIMEDOUT
;
82 Max_Interrupt
: constant := 63;
83 type Signal
is new int
range 0 .. Max_Interrupt
;
84 for Signal
'Size use int
'Size;
86 SIGHUP
: constant := System
.Linux
.SIGHUP
;
87 SIGINT
: constant := System
.Linux
.SIGINT
;
88 SIGQUIT
: constant := System
.Linux
.SIGQUIT
;
89 SIGILL
: constant := System
.Linux
.SIGILL
;
90 SIGTRAP
: constant := System
.Linux
.SIGTRAP
;
91 SIGIOT
: constant := System
.Linux
.SIGIOT
;
92 SIGABRT
: constant := System
.Linux
.SIGABRT
;
93 SIGFPE
: constant := System
.Linux
.SIGFPE
;
94 SIGKILL
: constant := System
.Linux
.SIGKILL
;
95 SIGBUS
: constant := System
.Linux
.SIGBUS
;
96 SIGSEGV
: constant := System
.Linux
.SIGSEGV
;
97 SIGPIPE
: constant := System
.Linux
.SIGPIPE
;
98 SIGALRM
: constant := System
.Linux
.SIGALRM
;
99 SIGTERM
: constant := System
.Linux
.SIGTERM
;
100 SIGUSR1
: constant := System
.Linux
.SIGUSR1
;
101 SIGUSR2
: constant := System
.Linux
.SIGUSR2
;
102 SIGCLD
: constant := System
.Linux
.SIGCLD
;
103 SIGCHLD
: constant := System
.Linux
.SIGCHLD
;
104 SIGPWR
: constant := System
.Linux
.SIGPWR
;
105 SIGWINCH
: constant := System
.Linux
.SIGWINCH
;
106 SIGURG
: constant := System
.Linux
.SIGURG
;
107 SIGPOLL
: constant := System
.Linux
.SIGPOLL
;
108 SIGIO
: constant := System
.Linux
.SIGIO
;
109 SIGLOST
: constant := System
.Linux
.SIGLOST
;
110 SIGSTOP
: constant := System
.Linux
.SIGSTOP
;
111 SIGTSTP
: constant := System
.Linux
.SIGTSTP
;
112 SIGCONT
: constant := System
.Linux
.SIGCONT
;
113 SIGTTIN
: constant := System
.Linux
.SIGTTIN
;
114 SIGTTOU
: constant := System
.Linux
.SIGTTOU
;
115 SIGVTALRM
: constant := System
.Linux
.SIGVTALRM
;
116 SIGPROF
: constant := System
.Linux
.SIGPROF
;
117 SIGXCPU
: constant := System
.Linux
.SIGXCPU
;
118 SIGXFSZ
: constant := System
.Linux
.SIGXFSZ
;
119 SIGUNUSED
: constant := System
.Linux
.SIGUNUSED
;
120 SIGSTKFLT
: constant := System
.Linux
.SIGSTKFLT
;
121 SIGLTHRRES
: constant := System
.Linux
.SIGLTHRRES
;
122 SIGLTHRCAN
: constant := System
.Linux
.SIGLTHRCAN
;
123 SIGLTHRDBG
: constant := System
.Linux
.SIGLTHRDBG
;
125 SIGADAABORT
: constant := SIGABRT
;
126 -- Change this to use another signal for task abort. SIGTERM might be a
129 type Signal_Set
is array (Natural range <>) of Signal
;
131 Unmasked
: constant Signal_Set
:= (
133 -- To enable debugging on multithreaded applications, mark SIGTRAP to
138 SIGTTIN
, SIGTTOU
, SIGTSTP
,
139 -- Keep these three signals unmasked so that background processes and IO
140 -- behaves as normal "C" applications
143 -- To avoid confusing the profiler
146 -- These two signals actually can't be masked (POSIX won't allow it)
148 SIGLTHRRES
, SIGLTHRCAN
, SIGLTHRDBG
);
149 -- These three signals are used by GNU/LinuxThreads starting from glibc
152 Reserved
: constant Signal_Set
:= (SIGVTALRM
, SIGUNUSED
);
153 -- Not clear why these two signals are reserved. Perhaps they are not
154 -- supported by this version of GNU/Linux ???
156 type sigset_t
is private;
158 function sigaddset
(set
: access sigset_t
; sig
: Signal
) return int
;
159 pragma Import
(C
, sigaddset
, "sigaddset");
161 function sigdelset
(set
: access sigset_t
; sig
: Signal
) return int
;
162 pragma Import
(C
, sigdelset
, "sigdelset");
164 function sigfillset
(set
: access sigset_t
) return int
;
165 pragma Import
(C
, sigfillset
, "sigfillset");
167 function sigismember
(set
: access sigset_t
; sig
: Signal
) return int
;
168 pragma Import
(C
, sigismember
, "sigismember");
170 function sigemptyset
(set
: access sigset_t
) return int
;
171 pragma Import
(C
, sigemptyset
, "sigemptyset");
173 type union_type_3
is new String (1 .. 116);
174 type siginfo_t
is record
178 X_data
: union_type_3
;
180 pragma Convention
(C
, siginfo_t
);
182 type struct_sigaction
is record
183 sa_handler
: System
.Address
;
185 sa_flags
: Interfaces
.C
.unsigned_long
;
186 sa_restorer
: System
.Address
;
188 pragma Convention
(C
, struct_sigaction
);
190 type struct_sigaction_ptr
is access all struct_sigaction
;
192 type Machine_State
is record
200 type Machine_State_Ptr
is access all Machine_State
;
202 SA_SIGINFO
: constant := System
.Linux
.SA_SIGINFO
;
203 SA_ONSTACK
: constant := System
.Linux
.SA_ONSTACK
;
205 SIG_BLOCK
: constant := 0;
206 SIG_UNBLOCK
: constant := 1;
207 SIG_SETMASK
: constant := 2;
209 SIG_DFL
: constant := 0;
210 SIG_IGN
: constant := 1;
214 act
: struct_sigaction_ptr
;
215 oact
: struct_sigaction_ptr
) return int
;
216 pragma Import
(C
, sigaction
, "sigaction");
222 subtype time_t
is System
.Linux
.time_t
;
223 subtype timespec
is System
.Linux
.timespec
;
224 subtype timeval
is System
.Linux
.timeval
;
225 subtype clockid_t
is System
.Linux
.clockid_t
;
227 function clock_gettime
228 (clock_id
: clockid_t
; tp
: access timespec
) return int
;
229 pragma Import
(C
, clock_gettime
, "clock_gettime");
231 function clock_getres
232 (clock_id
: clockid_t
;
233 res
: access timespec
) return int
;
234 pragma Import
(C
, clock_getres
, "clock_getres");
236 function To_Duration
(TS
: timespec
) return Duration;
237 pragma Inline
(To_Duration
);
239 function To_Timespec
(D
: Duration) return timespec
;
240 pragma Inline
(To_Timespec
);
242 function sysconf
(name
: int
) return long
;
243 pragma Import
(C
, sysconf
);
245 SC_CLK_TCK
: constant := 2;
246 SC_NPROCESSORS_ONLN
: constant := 84;
248 -------------------------
249 -- Priority Scheduling --
250 -------------------------
252 SCHED_OTHER
: constant := 0;
253 SCHED_FIFO
: constant := 1;
254 SCHED_RR
: constant := 2;
256 function To_Target_Priority
257 (Prio
: System
.Any_Priority
) return Interfaces
.C
.int
;
258 -- Maps System.Any_Priority to a POSIX priority
264 type pid_t
is private;
266 function kill
(pid
: pid_t
; sig
: Signal
) return int
;
267 pragma Import
(C
, kill
, "kill");
269 function getpid
return pid_t
;
270 pragma Import
(C
, getpid
, "getpid");
272 PR_SET_NAME
: constant := 15;
276 arg2
, arg3
, arg4
, arg5
: unsigned_long
:= 0) return int
;
277 pragma Import
(C
, prctl
);
283 type Thread_Body
is access
284 function (arg
: System
.Address
) return System
.Address
;
285 pragma Convention
(C
, Thread_Body
);
287 function Thread_Body_Access
is new
288 Ada
.Unchecked_Conversion
(System
.Address
, Thread_Body
);
290 type pthread_t
is new unsigned_long
;
291 subtype Thread_Id
is pthread_t
;
293 function To_pthread_t
is
294 new Ada
.Unchecked_Conversion
(unsigned_long
, pthread_t
);
296 type pthread_mutex_t
is limited private;
297 type pthread_rwlock_t
is limited private;
298 type pthread_cond_t
is limited private;
299 type pthread_attr_t
is limited private;
300 type pthread_mutexattr_t
is limited private;
301 type pthread_rwlockattr_t
is limited private;
302 type pthread_condattr_t
is limited private;
303 type pthread_key_t
is private;
305 PTHREAD_CREATE_DETACHED
: constant := 1;
311 type stack_t
is record
312 ss_sp
: System
.Address
;
316 pragma Convention
(C
, stack_t
);
319 (ss
: not null access stack_t
;
320 oss
: access stack_t
) return int
;
321 pragma Import
(C
, sigaltstack
, "sigaltstack");
323 Alternate_Stack
: aliased System
.Address
;
324 pragma Import
(C
, Alternate_Stack
, "__gnat_alternate_stack");
325 -- The alternate signal stack for stack overflows
327 Alternate_Stack_Size
: constant := 16 * 1024;
328 -- This must be in keeping with init.c:__gnat_alternate_stack
330 function Get_Stack_Base
(thread
: pthread_t
) return Address
;
331 pragma Inline
(Get_Stack_Base
);
332 -- This is a dummy procedure to share some GNULLI files
334 ---------------------------------------
335 -- Nonstandard Thread Initialization --
336 ---------------------------------------
338 procedure pthread_init
;
339 pragma Inline
(pthread_init
);
340 -- This is a dummy procedure to share some GNULLI files
342 -------------------------
343 -- POSIX.1c Section 3 --
344 -------------------------
346 function sigwait
(set
: access sigset_t
; sig
: access Signal
) return int
;
347 pragma Import
(C
, sigwait
, "sigwait");
349 function pthread_kill
(thread
: pthread_t
; sig
: Signal
) return int
;
350 pragma Import
(C
, pthread_kill
, "pthread_kill");
352 function pthread_sigmask
354 set
: access sigset_t
;
355 oset
: access sigset_t
) return int
;
356 pragma Import
(C
, pthread_sigmask
, "pthread_sigmask");
358 --------------------------
359 -- POSIX.1c Section 11 --
360 --------------------------
362 function pthread_mutexattr_init
363 (attr
: access pthread_mutexattr_t
) return int
;
364 pragma Import
(C
, pthread_mutexattr_init
, "pthread_mutexattr_init");
366 function pthread_mutexattr_destroy
367 (attr
: access pthread_mutexattr_t
) return int
;
368 pragma Import
(C
, pthread_mutexattr_destroy
, "pthread_mutexattr_destroy");
370 function pthread_mutex_init
371 (mutex
: access pthread_mutex_t
;
372 attr
: access pthread_mutexattr_t
) return int
;
373 pragma Import
(C
, pthread_mutex_init
, "pthread_mutex_init");
375 function pthread_mutex_destroy
(mutex
: access pthread_mutex_t
) return int
;
376 pragma Import
(C
, pthread_mutex_destroy
, "pthread_mutex_destroy");
378 function pthread_mutex_lock
(mutex
: access pthread_mutex_t
) return int
;
379 pragma Import
(C
, pthread_mutex_lock
, "pthread_mutex_lock");
381 function pthread_mutex_unlock
(mutex
: access pthread_mutex_t
) return int
;
382 pragma Import
(C
, pthread_mutex_unlock
, "pthread_mutex_unlock");
384 function pthread_rwlockattr_init
385 (attr
: access pthread_rwlockattr_t
) return int
;
386 pragma Import
(C
, pthread_rwlockattr_init
, "pthread_rwlockattr_init");
388 function pthread_rwlockattr_destroy
389 (attr
: access pthread_rwlockattr_t
) return int
;
390 pragma Import
(C
, pthread_rwlockattr_destroy
, "pthread_rwlockattr_destroy");
392 PTHREAD_RWLOCK_PREFER_READER_NP
: constant := 0;
393 PTHREAD_RWLOCK_PREFER_WRITER_NP
: constant := 1;
394 PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP
: constant := 2;
396 function pthread_rwlockattr_setkind_np
397 (attr
: access pthread_rwlockattr_t
;
398 pref
: int
) return int
;
400 (C
, pthread_rwlockattr_setkind_np
, "pthread_rwlockattr_setkind_np");
402 function pthread_rwlock_init
403 (mutex
: access pthread_rwlock_t
;
404 attr
: access pthread_rwlockattr_t
) return int
;
405 pragma Import
(C
, pthread_rwlock_init
, "pthread_rwlock_init");
407 function pthread_rwlock_destroy
408 (mutex
: access pthread_rwlock_t
) return int
;
409 pragma Import
(C
, pthread_rwlock_destroy
, "pthread_rwlock_destroy");
411 function pthread_rwlock_rdlock
(mutex
: access pthread_rwlock_t
) return int
;
412 pragma Import
(C
, pthread_rwlock_rdlock
, "pthread_rwlock_rdlock");
414 function pthread_rwlock_wrlock
(mutex
: access pthread_rwlock_t
) return int
;
415 pragma Import
(C
, pthread_rwlock_wrlock
, "pthread_rwlock_wrlock");
417 function pthread_rwlock_unlock
(mutex
: access pthread_rwlock_t
) return int
;
418 pragma Import
(C
, pthread_rwlock_unlock
, "pthread_rwlock_unlock");
420 function pthread_condattr_init
421 (attr
: access pthread_condattr_t
) return int
;
422 pragma Import
(C
, pthread_condattr_init
, "pthread_condattr_init");
424 function pthread_condattr_destroy
425 (attr
: access pthread_condattr_t
) return int
;
426 pragma Import
(C
, pthread_condattr_destroy
, "pthread_condattr_destroy");
428 function pthread_cond_init
429 (cond
: access pthread_cond_t
;
430 attr
: access pthread_condattr_t
) return int
;
431 pragma Import
(C
, pthread_cond_init
, "pthread_cond_init");
433 function pthread_cond_destroy
(cond
: access pthread_cond_t
) return int
;
434 pragma Import
(C
, pthread_cond_destroy
, "pthread_cond_destroy");
436 function pthread_cond_signal
(cond
: access pthread_cond_t
) return int
;
437 pragma Import
(C
, pthread_cond_signal
, "pthread_cond_signal");
439 function pthread_cond_wait
440 (cond
: access pthread_cond_t
;
441 mutex
: access pthread_mutex_t
) return int
;
442 pragma Import
(C
, pthread_cond_wait
, "pthread_cond_wait");
444 function pthread_cond_timedwait
445 (cond
: access pthread_cond_t
;
446 mutex
: access pthread_mutex_t
;
447 abstime
: access timespec
) return int
;
448 pragma Import
(C
, pthread_cond_timedwait
, "pthread_cond_timedwait");
450 --------------------------
451 -- POSIX.1c Section 13 --
452 --------------------------
454 type struct_sched_param
is record
455 sched_priority
: int
; -- scheduling priority
457 pragma Convention
(C
, struct_sched_param
);
459 function pthread_setschedparam
462 param
: access struct_sched_param
) return int
;
463 pragma Import
(C
, pthread_setschedparam
, "pthread_setschedparam");
465 function pthread_attr_setschedpolicy
466 (attr
: access pthread_attr_t
;
467 policy
: int
) return int
;
469 (C
, pthread_attr_setschedpolicy
, "pthread_attr_setschedpolicy");
471 function sched_yield
return int
;
472 pragma Import
(C
, sched_yield
, "sched_yield");
474 ---------------------------
475 -- P1003.1c - Section 16 --
476 ---------------------------
478 function pthread_attr_init
479 (attributes
: access pthread_attr_t
) return int
;
480 pragma Import
(C
, pthread_attr_init
, "pthread_attr_init");
482 function pthread_attr_destroy
483 (attributes
: access pthread_attr_t
) return int
;
484 pragma Import
(C
, pthread_attr_destroy
, "pthread_attr_destroy");
486 function pthread_attr_setdetachstate
487 (attr
: access pthread_attr_t
;
488 detachstate
: int
) return int
;
490 (C
, pthread_attr_setdetachstate
, "pthread_attr_setdetachstate");
492 function pthread_attr_setstacksize
493 (attr
: access pthread_attr_t
;
494 stacksize
: size_t
) return int
;
495 pragma Import
(C
, pthread_attr_setstacksize
, "pthread_attr_setstacksize");
497 function pthread_create
498 (thread
: access pthread_t
;
499 attributes
: access pthread_attr_t
;
500 start_routine
: Thread_Body
;
501 arg
: System
.Address
) return int
;
502 pragma Import
(C
, pthread_create
, "pthread_create");
504 procedure pthread_exit
(status
: System
.Address
);
505 pragma Import
(C
, pthread_exit
, "pthread_exit");
507 function pthread_self
return pthread_t
;
508 pragma Import
(C
, pthread_self
, "pthread_self");
510 function lwp_self
return System
.Address
;
511 pragma Import
(C
, lwp_self
, "__gnat_lwp_self");
513 --------------------------
514 -- POSIX.1c Section 17 --
515 --------------------------
517 function pthread_setspecific
518 (key
: pthread_key_t
;
519 value
: System
.Address
) return int
;
520 pragma Import
(C
, pthread_setspecific
, "pthread_setspecific");
522 function pthread_getspecific
(key
: pthread_key_t
) return System
.Address
;
523 pragma Import
(C
, pthread_getspecific
, "pthread_getspecific");
525 type destructor_pointer
is access procedure (arg
: System
.Address
);
526 pragma Convention
(C
, destructor_pointer
);
528 function pthread_key_create
529 (key
: access pthread_key_t
;
530 destructor
: destructor_pointer
) return int
;
531 pragma Import
(C
, pthread_key_create
, "pthread_key_create");
537 CPU_SETSIZE
: constant := 1_024
;
538 -- Size of the cpu_set_t mask on most linux systems (SUSE 11 uses 4_096).
539 -- This is kept for backward compatibility (System.Task_Info uses it), but
540 -- the run-time library does no longer rely on static masks, using
541 -- dynamically allocated masks instead.
543 type bit_field
is array (1 .. CPU_SETSIZE
) of Boolean;
544 for bit_field
'Size use CPU_SETSIZE
;
545 pragma Pack
(bit_field
);
546 pragma Convention
(C
, bit_field
);
548 type cpu_set_t
is record
551 pragma Convention
(C
, cpu_set_t
);
553 type cpu_set_t_ptr
is access all cpu_set_t
;
554 -- In the run-time library we use this pointer because the size of type
555 -- cpu_set_t varies depending on the glibc version. Hence, objects of type
556 -- cpu_set_t are allocated dynamically using the number of processors
557 -- available in the target machine (value obtained at execution time).
559 function CPU_ALLOC
(count
: size_t
) return cpu_set_t_ptr
;
560 pragma Import
(C
, CPU_ALLOC
, "__gnat_cpu_alloc");
561 -- Wrapper around the CPU_ALLOC C macro
563 function CPU_ALLOC_SIZE
(count
: size_t
) return size_t
;
564 pragma Import
(C
, CPU_ALLOC_SIZE
, "__gnat_cpu_alloc_size");
565 -- Wrapper around the CPU_ALLOC_SIZE C macro
567 procedure CPU_FREE
(cpuset
: cpu_set_t_ptr
);
568 pragma Import
(C
, CPU_FREE
, "__gnat_cpu_free");
569 -- Wrapper around the CPU_FREE C macro
571 procedure CPU_ZERO
(count
: size_t
; cpuset
: cpu_set_t_ptr
);
572 pragma Import
(C
, CPU_ZERO
, "__gnat_cpu_zero");
573 -- Wrapper around the CPU_ZERO_S C macro
575 procedure CPU_SET
(cpu
: int
; count
: size_t
; cpuset
: cpu_set_t_ptr
);
576 pragma Import
(C
, CPU_SET
, "__gnat_cpu_set");
577 -- Wrapper around the CPU_SET_S C macro
579 function pthread_setaffinity_np
582 cpuset
: cpu_set_t_ptr
) return int
;
583 pragma Import
(C
, pthread_setaffinity_np
, "pthread_setaffinity_np");
584 pragma Weak_External
(pthread_setaffinity_np
);
585 -- Use a weak symbol because this function may be available or not,
586 -- depending on the version of the system.
588 function pthread_attr_setaffinity_np
589 (attr
: access pthread_attr_t
;
591 cpuset
: cpu_set_t_ptr
) return int
;
592 pragma Import
(C
, pthread_attr_setaffinity_np
,
593 "pthread_attr_setaffinity_np");
594 pragma Weak_External
(pthread_attr_setaffinity_np
);
595 -- Use a weak symbol because this function may be available or not,
596 -- depending on the version of the system.
601 array (0 .. OS_Constants
.SIZEOF_sigset
- 1) of unsigned_char
;
602 pragma Convention
(C
, sigset_t
);
603 for sigset_t
'Alignment use Interfaces
.C
.unsigned_long
'Alignment;
605 pragma Warnings
(Off
);
606 for struct_sigaction
use record
607 sa_handler
at Linux
.sa_handler_pos
range 0 .. Standard
'Address_Size - 1;
608 sa_mask
at Linux
.sa_mask_pos
range 0 .. 1023;
609 sa_flags
at Linux
.sa_flags_pos
610 range 0 .. Interfaces
.C
.unsigned_long
'Size - 1;
612 -- We intentionally leave sa_restorer unspecified and let the compiler
613 -- append it after the last field, so disable corresponding warning.
614 pragma Warnings
(On
);
616 type pid_t
is new int
;
618 subtype char_array
is Interfaces
.C
.char_array
;
620 type pthread_attr_t
is record
621 Data
: char_array
(1 .. OS_Constants
.PTHREAD_ATTR_SIZE
);
623 pragma Convention
(C
, pthread_attr_t
);
624 for pthread_attr_t
'Alignment use Interfaces
.C
.unsigned_long
'Alignment;
626 type pthread_condattr_t
is record
627 Data
: char_array
(1 .. OS_Constants
.PTHREAD_CONDATTR_SIZE
);
629 pragma Convention
(C
, pthread_condattr_t
);
630 for pthread_condattr_t
'Alignment use Interfaces
.C
.int
'Alignment;
632 type pthread_mutexattr_t
is record
633 Data
: char_array
(1 .. OS_Constants
.PTHREAD_MUTEXATTR_SIZE
);
635 pragma Convention
(C
, pthread_mutexattr_t
);
636 for pthread_mutexattr_t
'Alignment use Interfaces
.C
.int
'Alignment;
638 type pthread_mutex_t
is record
639 Data
: char_array
(1 .. OS_Constants
.PTHREAD_MUTEX_SIZE
);
641 pragma Convention
(C
, pthread_mutex_t
);
642 for pthread_mutex_t
'Alignment use Interfaces
.C
.unsigned_long
'Alignment;
644 type pthread_rwlockattr_t
is record
645 Data
: char_array
(1 .. OS_Constants
.PTHREAD_RWLOCKATTR_SIZE
);
647 pragma Convention
(C
, pthread_rwlockattr_t
);
648 for pthread_rwlockattr_t
'Alignment use Interfaces
.C
.unsigned_long
'Alignment;
650 type pthread_rwlock_t
is record
651 Data
: char_array
(1 .. OS_Constants
.PTHREAD_RWLOCK_SIZE
);
653 pragma Convention
(C
, pthread_rwlock_t
);
654 for pthread_rwlock_t
'Alignment use Interfaces
.C
.unsigned_long
'Alignment;
656 type pthread_cond_t
is record
657 Data
: char_array
(1 .. OS_Constants
.PTHREAD_COND_SIZE
);
659 pragma Convention
(C
, pthread_cond_t
);
660 for pthread_cond_t
'Alignment use Interfaces
.Unsigned_64
'Alignment;
662 type pthread_key_t
is new unsigned
;
664 end System
.OS_Interface
;