glibc/sysdeps/htl/pt-getspecific.c
Samuel Thibault 315c9e794a htl: Make pthread_[gs]etspecific not check for key validity
Since __pthread_key_create might be concurrently reallocating the
__pthread_key_destructors array, it's not safe to access it without the
mutex held. Posix explicitly says we are allowed to prefer performance
over error detection.
2022-02-14 19:29:02 +01:00

39 lines
1.2 KiB
C

/* pthread_getspecific. Hurd version.
Copyright (C) 2002-2022 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
<https://www.gnu.org/licenses/>. */
#include <pthread.h>
#include <pt-internal.h>
void *
__pthread_getspecific (pthread_key_t key)
{
struct __pthread *self;
if (key < 0 || key >= __pthread_key_count)
return NULL;
self = _pthread_self ();
if (key >= self->thread_specifics_size)
return 0;
return self->thread_specifics[key];
}
weak_alias (__pthread_getspecific, pthread_getspecific);
hidden_def (__pthread_getspecific)