nptl: Add C11 threads tss_* functions

This patch adds the tss_* definitions from C11 threads (ISO/IEC 9899:2011),
more specifically tss_create, tss_delete, tss_get, tss_set, and required
types.

Mostly of the definitions are composed based on POSIX conterparts, including
tss_t (pthread_key_t).

Checked with a build for all major ABI (aarch64-linux-gnu, alpha-linux-gnu,
arm-linux-gnueabi, i386-linux-gnu, ia64-linux-gnu, m68k-linux-gnu,
microblaze-linux-gnu [1], mips{64}-linux-gnu, nios2-linux-gnu,
powerpc{64le}-linux-gnu, s390{x}-linux-gnu, sparc{64}-linux-gnu,
and x86_64-linux-gnu).

Also ran a full check on aarch64-linux-gnu, x86_64-linux-gnu, i686-linux-gnu,
arm-linux-gnueabhf, and powerpc64le-linux-gnu.

	[BZ #14092]
	* conform/data/threads.h-data (thread_local): New macro.
	(TSS_DTOR_ITERATIONS): Likewise.
	(tss_t): New type.
	(tss_dtor_t): Likewise.
	(tss_create): New function.
	(tss_get): Likewise.
	(tss_set): Likewise.
	(tss_delete): Likewise.
	* nptl/Makefile (libpthread-routines): Add tss_create, tss_delete,
	tss_get, and tss_set objects.
	* nptl/Versions (libpthread) [GLIBC_2.28]: Likewise.
	* nptl/tss_create.c: New file.
	* nptl/tss_delete.c: Likewise.
	* nptl/tss_get.c: Likewise.
	* nptl/tss_set.c: Likewise.
	* sysdeps/nptl/threads.h (thread_local): New define.
	(TSS_DTOR_ITERATIONS): Likewise.
	(tss_t): New typedef.
	(tss_dtor_t): Likewise.
	(tss_create): New prototype.
	(tss_get): Likewise.
	(tss_set): Likewise.
	(tss_delete): Likewise.
This commit is contained in:
Adhemerval Zanella 2017-06-27 11:00:05 -03:00
parent 918311a3a3
commit 78d401327f
9 changed files with 172 additions and 2 deletions

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@ -1,5 +1,30 @@
2018-07-24 Adhemerval Zanella <adhemerval.zanella@linaro.org>
[BZ #14092]
* conform/data/threads.h-data (thread_local): New macro.
(TSS_DTOR_ITERATIONS): Likewise.
(tss_t): New type.
(tss_dtor_t): Likewise.
(tss_create): New function.
(tss_get): Likewise.
(tss_set): Likewise.
(tss_delete): Likewise.
* nptl/Makefile (libpthread-routines): Add tss_create, tss_delete,
tss_get, and tss_set objects.
* nptl/Versions (libpthread) [GLIBC_2.28]: Likewise.
* nptl/tss_create.c: New file.
* nptl/tss_delete.c: Likewise.
* nptl/tss_get.c: Likewise.
* nptl/tss_set.c: Likewise.
* sysdeps/nptl/threads.h (thread_local): New define.
(TSS_DTOR_ITERATIONS): Likewise.
(tss_t): New typedef.
(tss_dtor_t): Likewise.
(tss_create): New prototype.
(tss_get): Likewise.
(tss_set): Likewise.
(tss_delete): Likewise.
[BZ #14092]
* conform/data/threads.h-data (cnd_t): New type.
(cnd_init): New function.

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@ -1,6 +1,8 @@
#if defined ISO11
macro ONCE_FLAG_INIT
macro thread_local
macro-int-constant TSS_DTOR_ITERATIONS
constant thrd_success
constant thrd_busy
@ -17,6 +19,8 @@ type thrd_start_t
type mtx_t
type once_flag
type cnd_t
type tss_t
type tss_dtor_t
function int thrd_create (thrd_t*, thrd_start_t, void*)
function int thrd_equal (thrd_t, thrd_t)
@ -43,6 +47,11 @@ function int cnd_wait (cnd_t*, mtx_t*)
function int cnd_timedwait (cnd_t*, mtx_t*, const struct timespec*)
function void cnd_destroy (cnd_t*)
function int tss_create (tss_t*, tss_dtor_t)
function {void*} tss_get (tss_t)
function int tss_set (tss_t, void*)
function void tss_delete (tss_t)
#include "time.h-data"
#endif

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@ -144,7 +144,8 @@ libpthread-routines = nptl-init nptlfreeres vars events version pt-interp \
thrd_create thrd_detach thrd_exit thrd_join \
mtx_destroy mtx_init mtx_lock mtx_timedlock \
mtx_trylock mtx_unlock call_once cnd_broadcast \
cnd_destroy cnd_init cnd_signal cnd_timedwait cnd_wait
cnd_destroy cnd_init cnd_signal cnd_timedwait cnd_wait \
tss_create tss_delete tss_get tss_set
# pthread_setuid pthread_seteuid pthread_setreuid \
# pthread_setresuid \
# pthread_setgid pthread_setegid pthread_setregid \

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@ -274,7 +274,7 @@ libpthread {
thrd_create; thrd_detach; thrd_exit; thrd_join;
mtx_init; mtx_lock; mtx_timedlock; mtx_trylock; mtx_unlock; mtx_destroy;
call_once; cnd_broadcast; cnd_destroy; cnd_init; cnd_signal;
cnd_timedwait; cnd_wait;
cnd_timedwait; cnd_wait; tss_create; tss_delete; tss_get; tss_set;
}
GLIBC_PRIVATE {

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@ -27,6 +27,14 @@ __BEGIN_DECLS
#include <bits/pthreadtypes-arch.h>
#include <bits/types/struct_timespec.h>
#ifndef __cplusplus
# define thread_local _Thread_local
#endif
#define TSS_DTOR_ITERATIONS 4
typedef unsigned int tss_t;
typedef void (*tss_dtor_t) (void*);
typedef unsigned long int thrd_t;
typedef int (*thrd_start_t) (void*);
@ -174,6 +182,26 @@ extern int cnd_timedwait (cnd_t *__restrict __cond,
resources. */
extern void cnd_destroy (cnd_t *__COND);
/* Thread specific storage functions. */
/* Create new thread-specific storage key and stores it in the object pointed
by __TSS_ID. If __DESTRUCTOR is not NULL, the function will be called when
the thread terminates. */
extern int tss_create (tss_t *__tss_id, tss_dtor_t __destructor);
/* Return the value held in thread-specific storage for the current thread
identified by __TSS_ID. */
extern void *tss_get (tss_t __tss_id);
/* Sets the value of the thread-specific storage identified by __TSS_ID for
the current thread to __VAL. */
extern int tss_set (tss_t __tss_id, void *__val);
/* Destroys the thread-specific storage identified by __TSS_ID. The
destructor is not called until thrd_exit is called. */
extern void tss_delete (tss_t __tss_id);
__END_DECLS
#endif /* _THREADS_H */

31
nptl/tss_create.c Normal file
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@ -0,0 +1,31 @@
/* C11 threads thread-specific creation implementation.
Copyright (C) 2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include "thrd_priv.h"
int
tss_create (tss_t *tss_id, tss_dtor_t destructor)
{
_Static_assert (sizeof (tss_t) == sizeof (pthread_key_t),
"sizeof (tss_t) != sizeof (pthread_key_t)");
_Static_assert (TSS_DTOR_ITERATIONS == PTHREAD_DESTRUCTOR_ITERATIONS,
"TSS_DTOR_ITERATIONS != PTHREAD_DESTRUCTOR_ITERATIONS");
int err_code = __pthread_key_create (tss_id, destructor);
return thrd_err_map (err_code);
}

25
nptl/tss_delete.c Normal file
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@ -0,0 +1,25 @@
/* C11 threads thread-specific delete implementation.
Copyright (C) 2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include "thrd_priv.h"
void
tss_delete (tss_t tss_id)
{
__pthread_key_delete (tss_id);
}

25
nptl/tss_get.c Normal file
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@ -0,0 +1,25 @@
/* C11 threads thread-specific get implementation.
Copyright (C) 2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include "thrd_priv.h"
void *
tss_get (tss_t tss_id)
{
return __pthread_getspecific (tss_id);
}

26
nptl/tss_set.c Normal file
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@ -0,0 +1,26 @@
/* C11 threads thread-specific set implementation.
Copyright (C) 2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include "thrd_priv.h"
int
tss_set (tss_t tss_id, void *val)
{
int err_code = __pthread_setspecific (tss_id, val);
return thrd_err_map (err_code);
}