glibc/htl/pt-self.c
Samuel Thibault 70ff58ced4 htl: Let pthread_self and cancellability called early
When applications redirect some functions they might get called before
libpthread is fully initialized.  They may still expected pthread_self
and cancellable functions to work, so cope with such calls in that
situation.
2022-08-02 00:00:03 +02:00

40 lines
1.2 KiB
C

/* Get calling thread's ID.
Copyright (C) 2000-2022 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>
/* Return the thread ID of the calling thread. */
pthread_t
__pthread_self (void)
{
struct __pthread *self;
if (___pthread_self == NULL)
/* We are not initialized yet, we are the first thread. */
return 1;
self = _pthread_self ();
assert (self != NULL);
return self->thread;
}
weak_alias (__pthread_self, pthread_self);