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) 1995-2014, Free Software Foundation, Inc. --
11 -- GNAT 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 3, or (at your option) any later ver- --
14 -- sion. GNAT 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. --
18 -- As a special exception under Section 7 of GPL version 3, you are granted --
19 -- additional permissions described in the GCC Runtime Library Exception, --
20 -- version 3.1, as published by the Free Software Foundation. --
22 -- You should have received a copy of the GNU General Public License and --
23 -- a copy of the GCC Runtime Library Exception along with this program; --
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
25 -- <http://www.gnu.org/licenses/>. --
27 -- GNARL was developed by the GNARL team at Florida State University. --
28 -- Extensive contributions were provided by Ada Core Technologies, Inc. --
30 ------------------------------------------------------------------------------
32 -- This is an Android version of this package which is based on the
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 subtype int
is Interfaces
.C
.int
;
50 subtype char
is Interfaces
.C
.char
;
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
;
64 function errno
return int
;
65 pragma Import
(C
, errno
, "__get_errno");
67 EAGAIN
: constant := System
.Linux
.EAGAIN
;
68 EINTR
: constant := System
.Linux
.EINTR
;
69 EINVAL
: constant := System
.Linux
.EINVAL
;
70 ENOMEM
: constant := System
.Linux
.ENOMEM
;
71 EPERM
: constant := System
.Linux
.EPERM
;
72 ETIMEDOUT
: constant := System
.Linux
.ETIMEDOUT
;
78 Max_Interrupt
: constant := 31;
79 type Signal
is new int
range 0 .. Max_Interrupt
;
80 for Signal
'Size use int
'Size;
82 SIGHUP
: constant := System
.Linux
.SIGHUP
;
83 SIGINT
: constant := System
.Linux
.SIGINT
;
84 SIGQUIT
: constant := System
.Linux
.SIGQUIT
;
85 SIGILL
: constant := System
.Linux
.SIGILL
;
86 SIGTRAP
: constant := System
.Linux
.SIGTRAP
;
87 SIGIOT
: constant := System
.Linux
.SIGIOT
;
88 SIGABRT
: constant := System
.Linux
.SIGABRT
;
89 SIGFPE
: constant := System
.Linux
.SIGFPE
;
90 SIGKILL
: constant := System
.Linux
.SIGKILL
;
91 SIGBUS
: constant := System
.Linux
.SIGBUS
;
92 SIGSEGV
: constant := System
.Linux
.SIGSEGV
;
93 SIGPIPE
: constant := System
.Linux
.SIGPIPE
;
94 SIGALRM
: constant := System
.Linux
.SIGALRM
;
95 SIGTERM
: constant := System
.Linux
.SIGTERM
;
96 SIGUSR1
: constant := System
.Linux
.SIGUSR1
;
97 SIGUSR2
: constant := System
.Linux
.SIGUSR2
;
98 SIGCLD
: constant := System
.Linux
.SIGCLD
;
99 SIGCHLD
: constant := System
.Linux
.SIGCHLD
;
100 SIGPWR
: constant := System
.Linux
.SIGPWR
;
101 SIGWINCH
: constant := System
.Linux
.SIGWINCH
;
102 SIGURG
: constant := System
.Linux
.SIGURG
;
103 SIGPOLL
: constant := System
.Linux
.SIGPOLL
;
104 SIGIO
: constant := System
.Linux
.SIGIO
;
105 SIGLOST
: constant := System
.Linux
.SIGLOST
;
106 SIGSTOP
: constant := System
.Linux
.SIGSTOP
;
107 SIGTSTP
: constant := System
.Linux
.SIGTSTP
;
108 SIGCONT
: constant := System
.Linux
.SIGCONT
;
109 SIGTTIN
: constant := System
.Linux
.SIGTTIN
;
110 SIGTTOU
: constant := System
.Linux
.SIGTTOU
;
111 SIGVTALRM
: constant := System
.Linux
.SIGVTALRM
;
112 SIGPROF
: constant := System
.Linux
.SIGPROF
;
113 SIGXCPU
: constant := System
.Linux
.SIGXCPU
;
114 SIGXFSZ
: constant := System
.Linux
.SIGXFSZ
;
115 SIGUNUSED
: constant := System
.Linux
.SIGUNUSED
;
116 SIGSTKFLT
: constant := System
.Linux
.SIGSTKFLT
;
118 SIGADAABORT
: constant := SIGABRT
;
119 -- Change this to use another signal for task abort. SIGTERM might be a
122 type Signal_Set
is array (Natural range <>) of Signal
;
124 Unmasked
: constant Signal_Set
:= (
126 -- To enable debugging on multithreaded applications, mark SIGTRAP to
131 SIGTTIN
, SIGTTOU
, SIGTSTP
,
132 -- Keep these three signals unmasked so that background processes and IO
133 -- behaves as normal "C" applications
136 -- To avoid confusing the profiler
139 -- These two signals actually can't be masked (POSIX won't allow it)
141 Reserved
: constant Signal_Set
:= (SIGVTALRM
, SIGUNUSED
);
142 -- Not clear why these two signals are reserved. Perhaps they are not
143 -- supported by this version of GNU/Linux ???
145 type sigset_t
is private;
147 function sigaddset
(set
: access sigset_t
; sig
: Signal
) return int
;
148 pragma Import
(C
, sigaddset
, "_sigaddset");
150 function sigdelset
(set
: access sigset_t
; sig
: Signal
) return int
;
151 pragma Import
(C
, sigdelset
, "_sigdelset");
153 function sigfillset
(set
: access sigset_t
) return int
;
154 pragma Import
(C
, sigfillset
, "_sigfillset");
156 function sigismember
(set
: access sigset_t
; sig
: Signal
) return int
;
157 pragma Import
(C
, sigismember
, "_sigismember");
159 function sigemptyset
(set
: access sigset_t
) return int
;
160 pragma Import
(C
, sigemptyset
, "_sigemptyset");
162 type union_type_3
is new String (1 .. 116);
163 type siginfo_t
is record
167 X_data
: union_type_3
;
169 pragma Convention
(C
, siginfo_t
);
171 type struct_sigaction
is record
172 sa_handler
: System
.Address
;
174 sa_flags
: Interfaces
.C
.unsigned_long
;
175 sa_restorer
: System
.Address
;
177 pragma Convention
(C
, struct_sigaction
);
179 type struct_sigaction_ptr
is access all struct_sigaction
;
181 SA_SIGINFO
: constant := System
.Linux
.SA_SIGINFO
;
182 SA_ONSTACK
: constant := System
.Linux
.SA_ONSTACK
;
183 SA_NODEFER
: constant := System
.Linux
.SA_NODEFER
;
184 SA_RESTART
: constant := System
.Linux
.SA_RESTART
;
186 SIG_BLOCK
: constant := 0;
187 SIG_UNBLOCK
: constant := 1;
188 SIG_SETMASK
: constant := 2;
190 SIG_DFL
: constant := 0;
191 SIG_IGN
: constant := 1;
195 act
: struct_sigaction_ptr
;
196 oact
: struct_sigaction_ptr
) return int
;
197 pragma Import
(C
, sigaction
, "sigaction");
203 Time_Slice_Supported
: constant Boolean := True;
204 -- Indicates whether time slicing is supported
206 type timespec
is private;
208 type clockid_t
is new int
;
210 function clock_gettime
211 (clock_id
: clockid_t
;
212 tp
: access timespec
) return int
;
214 function To_Duration
(TS
: timespec
) return Duration;
215 pragma Inline
(To_Duration
);
217 function To_Timespec
(D
: Duration) return timespec
;
218 pragma Inline
(To_Timespec
);
220 function sysconf
(name
: int
) return long
;
221 pragma Import
(C
, sysconf
);
223 SC_CLK_TCK
: constant := 2;
224 SC_NPROCESSORS_ONLN
: constant := 84;
226 -------------------------
227 -- Priority Scheduling --
228 -------------------------
230 SCHED_OTHER
: constant := 0;
231 SCHED_FIFO
: constant := 1;
232 SCHED_RR
: constant := 2;
234 function To_Target_Priority
235 (Prio
: System
.Any_Priority
)
236 return Interfaces
.C
.int
is (Interfaces
.C
.int
(Prio
));
237 -- Maps System.Any_Priority to a POSIX priority
243 type pid_t
is private;
245 function kill
(pid
: pid_t
; sig
: Signal
) return int
;
246 pragma Import
(C
, kill
, "kill");
248 function getpid
return pid_t
;
249 pragma Import
(C
, getpid
, "getpid");
255 type Thread_Body
is access
256 function (arg
: System
.Address
) return System
.Address
;
257 pragma Convention
(C
, Thread_Body
);
259 function Thread_Body_Access
is new
260 Ada
.Unchecked_Conversion
(System
.Address
, Thread_Body
);
262 type pthread_t
is new unsigned_long
;
263 subtype Thread_Id
is pthread_t
;
265 function To_pthread_t
is
266 new Ada
.Unchecked_Conversion
(unsigned_long
, pthread_t
);
268 type pthread_mutex_t
is limited private;
269 type pthread_cond_t
is limited private;
270 type pthread_attr_t
is limited private;
271 type pthread_mutexattr_t
is limited private;
272 type pthread_condattr_t
is limited private;
273 type pthread_key_t
is private;
275 PTHREAD_CREATE_DETACHED
: constant := 1;
277 PTHREAD_SCOPE_PROCESS
: constant := 1;
278 PTHREAD_SCOPE_SYSTEM
: constant := 0;
280 -- Read/Write lock not supported on Android.
282 subtype pthread_rwlock_t
is pthread_mutex_t
;
283 subtype pthread_rwlockattr_t
is pthread_mutexattr_t
;
289 type stack_t
is record
290 ss_sp
: System
.Address
;
294 pragma Convention
(C
, stack_t
);
297 (ss
: not null access stack_t
;
298 oss
: access stack_t
) return int
;
299 pragma Import
(C
, sigaltstack
, "sigaltstack");
301 Alternate_Stack
: aliased System
.Address
;
302 pragma Import
(C
, Alternate_Stack
, "__gnat_alternate_stack");
303 -- The alternate signal stack for stack overflows
305 Alternate_Stack_Size
: constant := 16 * 1024;
306 -- This must be in keeping with init.c:__gnat_alternate_stack
308 Stack_Base_Available
: constant Boolean := False;
309 -- Indicates whether the stack base is available on this target
311 function Get_Stack_Base
(thread
: pthread_t
)
312 return Address
is (Null_Address
);
313 -- This is a dummy procedure to share some GNULLI files
315 function Get_Page_Size
return size_t
;
316 function Get_Page_Size
return Address
;
317 pragma Import
(C
, Get_Page_Size
, "_getpagesize");
318 -- Returns the size of a page
320 PROT_NONE
: constant := 0;
321 PROT_READ
: constant := 1;
322 PROT_WRITE
: constant := 2;
323 PROT_EXEC
: constant := 4;
324 PROT_ALL
: constant := PROT_READ
+ PROT_WRITE
+ PROT_EXEC
;
325 PROT_ON
: constant := PROT_READ
;
326 PROT_OFF
: constant := PROT_ALL
;
328 function mprotect
(addr
: Address
; len
: size_t
; prot
: int
) return int
;
329 pragma Import
(C
, mprotect
);
331 ---------------------------------------
332 -- Nonstandard Thread Initialization --
333 ---------------------------------------
335 procedure pthread_init
is null;
336 -- This is a dummy procedure to share some GNULLI files
338 -------------------------
339 -- POSIX.1c Section 3 --
340 -------------------------
342 function sigwait
(set
: access sigset_t
; sig
: access Signal
) return int
;
343 pragma Import
(C
, sigwait
, "sigwait");
345 function pthread_kill
(thread
: pthread_t
; sig
: Signal
) return int
;
346 pragma Import
(C
, pthread_kill
, "pthread_kill");
348 function pthread_sigmask
350 set
: access sigset_t
;
351 oset
: access sigset_t
) return int
;
352 pragma Import
(C
, pthread_sigmask
, "sigprocmask");
353 -- pthread_sigmask maybe be broken due to mismatch between sigset_t and
354 -- kernel_sigset_t, substitute sigprocmask temporarily. ???
355 -- pragma Import (C, pthread_sigmask, "pthread_sigmask");
357 --------------------------
358 -- POSIX.1c Section 11 --
359 --------------------------
361 function pthread_mutexattr_init
362 (attr
: access pthread_mutexattr_t
) return int
;
363 pragma Import
(C
, pthread_mutexattr_init
, "pthread_mutexattr_init");
365 function pthread_mutexattr_destroy
366 (attr
: access pthread_mutexattr_t
) return int
;
367 pragma Import
(C
, pthread_mutexattr_destroy
, "pthread_mutexattr_destroy");
369 function pthread_mutex_init
370 (mutex
: access pthread_mutex_t
;
371 attr
: access pthread_mutexattr_t
) return int
;
372 pragma Import
(C
, pthread_mutex_init
, "pthread_mutex_init");
374 function pthread_mutex_destroy
(mutex
: access pthread_mutex_t
) return int
;
375 pragma Import
(C
, pthread_mutex_destroy
, "pthread_mutex_destroy");
377 function pthread_mutex_lock
(mutex
: access pthread_mutex_t
) return int
;
378 pragma Import
(C
, pthread_mutex_lock
, "pthread_mutex_lock");
380 function pthread_mutex_unlock
(mutex
: access pthread_mutex_t
) return int
;
381 pragma Import
(C
, pthread_mutex_unlock
, "pthread_mutex_unlock");
383 function pthread_condattr_init
384 (attr
: access pthread_condattr_t
) return int
;
385 pragma Import
(C
, pthread_condattr_init
, "pthread_condattr_init");
387 function pthread_condattr_destroy
388 (attr
: access pthread_condattr_t
) return int
;
389 pragma Import
(C
, pthread_condattr_destroy
, "pthread_condattr_destroy");
391 function pthread_cond_init
392 (cond
: access pthread_cond_t
;
393 attr
: access pthread_condattr_t
) return int
;
394 pragma Import
(C
, pthread_cond_init
, "pthread_cond_init");
396 function pthread_cond_destroy
(cond
: access pthread_cond_t
) return int
;
397 pragma Import
(C
, pthread_cond_destroy
, "pthread_cond_destroy");
399 function pthread_cond_signal
(cond
: access pthread_cond_t
) return int
;
400 pragma Import
(C
, pthread_cond_signal
, "pthread_cond_signal");
402 function pthread_cond_wait
403 (cond
: access pthread_cond_t
;
404 mutex
: access pthread_mutex_t
) return int
;
405 pragma Import
(C
, pthread_cond_wait
, "pthread_cond_wait");
407 function pthread_cond_timedwait
408 (cond
: access pthread_cond_t
;
409 mutex
: access pthread_mutex_t
;
410 abstime
: access timespec
) return int
;
411 pragma Import
(C
, pthread_cond_timedwait
, "pthread_cond_timedwait");
413 Relative_Timed_Wait
: constant Boolean := False;
414 -- pthread_cond_timedwait requires an absolute delay time
416 --------------------------
417 -- POSIX.1c Section 13 --
418 --------------------------
420 PTHREAD_PRIO_PROTECT
: constant := 0;
421 PTHREAD_PRIO_INHERIT
: constant := 1;
423 function pthread_mutexattr_setprotocol
424 (attr
: access pthread_mutexattr_t
;
425 protocol
: int
) return int
is (0);
427 function pthread_mutexattr_setprioceiling
428 (attr
: access pthread_mutexattr_t
;
429 prioceiling
: int
) return int
is (0);
431 type struct_sched_param
is record
432 sched_priority
: int
; -- scheduling priority
434 pragma Convention
(C
, struct_sched_param
);
436 function pthread_setschedparam
439 param
: access struct_sched_param
) return int
;
440 pragma Import
(C
, pthread_setschedparam
, "pthread_setschedparam");
442 function pthread_attr_setscope
443 (attr
: access pthread_attr_t
;
444 scope
: int
) return int
;
445 pragma Import
(C
, pthread_attr_setscope
, "pthread_attr_setscope");
447 function pthread_attr_setschedpolicy
448 (attr
: access pthread_attr_t
;
449 policy
: int
) return int
;
451 (C
, pthread_attr_setschedpolicy
, "pthread_attr_setschedpolicy");
453 function sched_yield
return int
;
454 pragma Import
(C
, sched_yield
, "sched_yield");
456 ---------------------------
457 -- P1003.1c - Section 16 --
458 ---------------------------
460 function pthread_attr_init
461 (attributes
: access pthread_attr_t
) return int
;
462 pragma Import
(C
, pthread_attr_init
, "pthread_attr_init");
464 function pthread_attr_destroy
465 (attributes
: access pthread_attr_t
) return int
;
466 pragma Import
(C
, pthread_attr_destroy
, "pthread_attr_destroy");
468 function pthread_attr_setdetachstate
469 (attr
: access pthread_attr_t
;
470 detachstate
: int
) return int
;
472 (C
, pthread_attr_setdetachstate
, "pthread_attr_setdetachstate");
474 function pthread_attr_setstacksize
475 (attr
: access pthread_attr_t
;
476 stacksize
: size_t
) return int
;
477 pragma Import
(C
, pthread_attr_setstacksize
, "pthread_attr_setstacksize");
479 function pthread_create
480 (thread
: access pthread_t
;
481 attributes
: access pthread_attr_t
;
482 start_routine
: Thread_Body
;
483 arg
: System
.Address
) return int
;
484 pragma Import
(C
, pthread_create
, "pthread_create");
486 procedure pthread_exit
(status
: System
.Address
);
487 pragma Import
(C
, pthread_exit
, "pthread_exit");
489 function pthread_self
return pthread_t
;
490 pragma Import
(C
, pthread_self
, "pthread_self");
492 function lwp_self
return System
.Address
;
493 pragma Import
(C
, lwp_self
, "__gnat_lwp_self");
495 --------------------------
496 -- POSIX.1c Section 17 --
497 --------------------------
499 function pthread_setspecific
500 (key
: pthread_key_t
;
501 value
: System
.Address
) return int
;
502 pragma Import
(C
, pthread_setspecific
, "pthread_setspecific");
504 function pthread_getspecific
(key
: pthread_key_t
) return System
.Address
;
505 pragma Import
(C
, pthread_getspecific
, "pthread_getspecific");
507 type destructor_pointer
is access procedure (arg
: System
.Address
);
508 pragma Convention
(C
, destructor_pointer
);
510 function pthread_key_create
511 (key
: access pthread_key_t
;
512 destructor
: destructor_pointer
) return int
;
513 pragma Import
(C
, pthread_key_create
, "pthread_key_create");
515 CPU_SETSIZE
: constant := 1_024
;
516 -- Size of the cpu_set_t mask on most linux systems (SUSE 11 uses 4_096).
517 -- This is kept for backward compatibility (System.Task_Info uses it), but
518 -- the run-time library does no longer rely on static masks, using
519 -- dynamically allocated masks instead.
521 type bit_field
is array (1 .. CPU_SETSIZE
) of Boolean;
522 for bit_field
'Size use CPU_SETSIZE
;
523 pragma Pack
(bit_field
);
524 pragma Convention
(C
, bit_field
);
526 type cpu_set_t
is record
529 pragma Convention
(C
, cpu_set_t
);
531 type cpu_set_t_ptr
is access all cpu_set_t
;
532 -- In the run-time library we use this pointer because the size of type
533 -- cpu_set_t varies depending on the glibc version. Hence, objects of type
534 -- cpu_set_t are allocated dynamically using the number of processors
535 -- available in the target machine (value obtained at execution time).
537 function CPU_ALLOC
(count
: size_t
) return cpu_set_t_ptr
;
538 pragma Import
(C
, CPU_ALLOC
, "__gnat_cpu_alloc");
539 -- Wrapper around the CPU_ALLOC C macro
541 function CPU_ALLOC_SIZE
(count
: size_t
) return size_t
;
542 pragma Import
(C
, CPU_ALLOC_SIZE
, "__gnat_cpu_alloc_size");
543 -- Wrapper around the CPU_ALLOC_SIZE C macro
545 procedure CPU_FREE
(cpuset
: cpu_set_t_ptr
);
546 pragma Import
(C
, CPU_FREE
, "__gnat_cpu_free");
547 -- Wrapper around the CPU_FREE C macro
549 procedure CPU_ZERO
(count
: size_t
; cpuset
: cpu_set_t_ptr
);
550 pragma Import
(C
, CPU_ZERO
, "__gnat_cpu_zero");
551 -- Wrapper around the CPU_ZERO_S C macro
553 procedure CPU_SET
(cpu
: int
; count
: size_t
; cpuset
: cpu_set_t_ptr
);
554 pragma Import
(C
, CPU_SET
, "__gnat_cpu_set");
555 -- Wrapper around the CPU_SET_S C macro
557 function pthread_setaffinity_np
560 cpuset
: cpu_set_t_ptr
) return int
;
561 pragma Import
(C
, pthread_setaffinity_np
, "pthread_setaffinity_np");
562 pragma Weak_External
(pthread_setaffinity_np
);
563 -- Use a weak symbol because this function may be available or not,
564 -- depending on the version of the system.
566 function pthread_attr_setaffinity_np
567 (attr
: access pthread_attr_t
;
569 cpuset
: cpu_set_t_ptr
) return int
;
570 pragma Import
(C
, pthread_attr_setaffinity_np
,
571 "pthread_attr_setaffinity_np");
572 pragma Weak_External
(pthread_attr_setaffinity_np
);
573 -- Use a weak symbol because this function may be available or not,
574 -- depending on the version of the system.
578 type sigset_t
is new Interfaces
.C
.unsigned_long
;
579 pragma Convention
(C
, sigset_t
);
580 for sigset_t
'Alignment use Interfaces
.C
.unsigned_long
'Alignment;
582 pragma Warnings
(Off
);
583 for struct_sigaction
use record
584 sa_handler
at Linux
.sa_handler_pos
range 0 .. Standard
'Address_Size - 1;
585 sa_mask
at Linux
.sa_mask_pos
range 0 .. sigset_t
'Size - 1;
586 sa_flags
at Linux
.sa_flags_pos
587 range 0 .. Interfaces
.C
.unsigned_long
'Size - 1;
589 -- We intentionally leave sa_restorer unspecified and let the compiler
590 -- append it after the last field, so disable corresponding warning.
591 pragma Warnings
(On
);
593 type pid_t
is new int
;
595 type time_t
is new long
;
597 type timespec
is record
601 pragma Convention
(C
, timespec
);
603 type unsigned_long_long_t
is mod 2 ** 64;
604 -- Local type only used to get the alignment of this type below
606 subtype char_array
is Interfaces
.C
.char_array
;
608 type pthread_attr_t
is record
609 Data
: char_array
(1 .. OS_Constants
.PTHREAD_ATTR_SIZE
);
611 pragma Convention
(C
, pthread_attr_t
);
612 for pthread_attr_t
'Alignment use Interfaces
.C
.unsigned_long
'Alignment;
614 type pthread_condattr_t
is record
615 Data
: char_array
(1 .. OS_Constants
.PTHREAD_CONDATTR_SIZE
);
617 pragma Convention
(C
, pthread_condattr_t
);
618 for pthread_condattr_t
'Alignment use Interfaces
.C
.int
'Alignment;
620 type pthread_mutexattr_t
is record
621 Data
: char_array
(1 .. OS_Constants
.PTHREAD_MUTEXATTR_SIZE
);
623 pragma Convention
(C
, pthread_mutexattr_t
);
624 for pthread_mutexattr_t
'Alignment use Interfaces
.C
.int
'Alignment;
626 type pthread_mutex_t
is record
627 Data
: char_array
(1 .. OS_Constants
.PTHREAD_MUTEX_SIZE
);
629 pragma Convention
(C
, pthread_mutex_t
);
630 for pthread_mutex_t
'Alignment use Interfaces
.C
.unsigned_long
'Alignment;
632 type pthread_cond_t
is record
633 Data
: char_array
(1 .. OS_Constants
.PTHREAD_COND_SIZE
);
635 pragma Convention
(C
, pthread_cond_t
);
636 for pthread_cond_t
'Alignment use unsigned_long_long_t
'Alignment;
638 type pthread_key_t
is new unsigned
;
640 end System
.OS_Interface
;