mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 04:50:07 +00:00
fa872e1b62
This patch adds internal definition (through {libc_}hidden_{proto,def}) and
also change some strong to weak alias for symbols that might be used by C11
threads implementations.
The patchset should not change libc/libpthread functional, although object
changes are expected (since now internal symbols are used instead) and final
exported symbols through GLIBC_PRIVATE is also expanded (to cover libpthread
usage of __mmap{64}, __munmap, __mprotect).
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,
tile{pro,gx}-linux-gnu, and x86_64-linux-gnu).
* include/sched.h (__sched_get_priority_max): Add libc hidden proto.
(__sched_get_prioriry_min): Likewise.
* include/sys/mman.h (__mmap): Likewise.
(__mmap64): Likewise.
(__munmap): Likewise.
(__mprotect): Likewise.
* include/termios.h (__tcsetattr): Likewise.
* include/time.h (__nanosleep): Use hidden_proto instead of
libc_hidden_proto.
* posix/nanosleep.c (__nanosleep): Likewise.
* misc/Versions (libc): Export __mmap, __munmap, __mprotect,
__sched_get_priority_min, and __sched_get_priority_max under
GLIBC_PRIVATE.
* nptl/allocatestack.c (__free_stacks): Use internal definition for
libc symbols.
(change_stack_perm): Likewise.
(allocate_stack): Likewise.
* sysdeps/posix/gethostname.c: Likewise.
* nptl/tpp.c (__init_sched_fifo_prio): Likewise.
* sysdeps/unix/sysv/linux/i386/smp.h (is_smp_system): Likewise.
* sysdeps/unix/sysv/linux/powerpc/ioctl.c (__ioctl): Likewise.
* nptl/pthreadP.h (__pthread_mutex_timedlock): Add definition.
(__pthread_key_delete): Likewise.
(__pthread_detach): Likewise.
(__pthread_cancel): Likewise.
(__pthread_mutex_trylock): Likewise.
(__pthread_mutexattr_init): Likewise.
(__pthread_mutexattr_settype): Likewise.
* nptl/pthread_cancel.c (pthread_cancel): Change to internal name and
create alias for exported one.
* nptl/pthread_join.c (pthread_join): Likewise.
* nptl/pthread_detach.c (pthread_detach): Likewise.
* nptl/pthread_key_delete.c (pthread_key_delete): Likewise.
* nptl/pthread_mutex_timedlock.c (pthread_mutex_timedlock): Likewise.
* nptl/pthread_create.c: Change static requirements for pthread
symbols.
* nptl/pthread_equal.c (__pthread_equal): Change strong alias to weak
for internal definition.
* nptl/pthread_exit.c (__pthread_exit): Likewise.
* nptl/pthread_getspecific.c (__pthread_getspecific): Likewise.
* nptl/pthread_key_create.c (__pthread_key_create): Likewise.
* nptl/pthread_mutex_destroy.c (__pthread_mutex_destroy): Likewise.
* nptl/pthread_mutex_init.c (__pthread_mutex_init): Likewise.
* nptl/pthread_mutex_lock.c (__pthread_mutex_lock): Likewise.
* nptl/pthread_mutex_trylock.c (__pthread_mutex_trylock): Likewise.
* nptl/pthread_mutex_unlock.c (__pthread_mutex_unlock): Likewise.
* nptl/pthread_mutexattr_init.c (__pthread_mutexattr_init): Likwise.
* nptl/pthread_mutexattr_settype.c (__pthread_mutexattr_settype):
Likewise.
* nptl/pthread_self.c (__pthread_self): Likewise.
* nptl/pthread_setspecific.c (__pthread_setspecific): Likewise.
* sysdeps/unix/sysv/linux/tcsetattr.c (tcsetattr): Likewise.
* misc/mmap.c (__mmap): Add internal symbol definition.
* misc/mmap.c (__mmap64): Likewise.
* sysdeps/unix/sysv/linux/mmap.c (__mmap): Likewise.
* sysdeps/unix/sysv/linux/mmap64.c (__mmap): Likewise.
(__mmap64): Likewise.
* sysdeps/unix/sysv/linux/i386/Versions (libc) [GLIBC_PRIVATE):
Add __uname.
94 lines
2.7 KiB
C
94 lines
2.7 KiB
C
/* Copyright (C) 2002-2017 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
|
|
|
|
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 <errno.h>
|
|
#include <stdlib.h>
|
|
#include "pthreadP.h"
|
|
|
|
|
|
int
|
|
__pthread_setspecific (pthread_key_t key, const void *value)
|
|
{
|
|
struct pthread *self;
|
|
unsigned int idx1st;
|
|
unsigned int idx2nd;
|
|
struct pthread_key_data *level2;
|
|
unsigned int seq;
|
|
|
|
self = THREAD_SELF;
|
|
|
|
/* Special case access to the first 2nd-level block. This is the
|
|
usual case. */
|
|
if (__glibc_likely (key < PTHREAD_KEY_2NDLEVEL_SIZE))
|
|
{
|
|
/* Verify the key is sane. */
|
|
if (KEY_UNUSED ((seq = __pthread_keys[key].seq)))
|
|
/* Not valid. */
|
|
return EINVAL;
|
|
|
|
level2 = &self->specific_1stblock[key];
|
|
|
|
/* Remember that we stored at least one set of data. */
|
|
if (value != NULL)
|
|
THREAD_SETMEM (self, specific_used, true);
|
|
}
|
|
else
|
|
{
|
|
if (key >= PTHREAD_KEYS_MAX
|
|
|| KEY_UNUSED ((seq = __pthread_keys[key].seq)))
|
|
/* Not valid. */
|
|
return EINVAL;
|
|
|
|
idx1st = key / PTHREAD_KEY_2NDLEVEL_SIZE;
|
|
idx2nd = key % PTHREAD_KEY_2NDLEVEL_SIZE;
|
|
|
|
/* This is the second level array. Allocate it if necessary. */
|
|
level2 = THREAD_GETMEM_NC (self, specific, idx1st);
|
|
if (level2 == NULL)
|
|
{
|
|
if (value == NULL)
|
|
/* We don't have to do anything. The value would in any case
|
|
be NULL. We can save the memory allocation. */
|
|
return 0;
|
|
|
|
level2
|
|
= (struct pthread_key_data *) calloc (PTHREAD_KEY_2NDLEVEL_SIZE,
|
|
sizeof (*level2));
|
|
if (level2 == NULL)
|
|
return ENOMEM;
|
|
|
|
THREAD_SETMEM_NC (self, specific, idx1st, level2);
|
|
}
|
|
|
|
/* Pointer to the right array element. */
|
|
level2 = &level2[idx2nd];
|
|
|
|
/* Remember that we stored at least one set of data. */
|
|
THREAD_SETMEM (self, specific_used, true);
|
|
}
|
|
|
|
/* Store the data and the sequence number so that we can recognize
|
|
stale data. */
|
|
level2->seq = seq;
|
|
level2->data = (void *) value;
|
|
|
|
return 0;
|
|
}
|
|
weak_alias (__pthread_setspecific, pthread_setspecific)
|
|
hidden_def (__pthread_setspecific)
|