mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-11 22:00:08 +00:00
f779b1efb3
Now that pthread_kill is provided by libc.so it is possible to implement the generic POSIX implementation as 'pthread_kill(pthread_self(), sig)'. For Linux implementation, pthread_kill read the targeting TID from the TCB. For raise, this it not possible because it would make raise fail when issue after vfork (where creates the resulting process has a different TID from the parent, but its TCB is not updated as for pthread_create). To make raise use pthread_kill, it is make usable from vfork by getting the target thread id through gettid syscall. Checked on x86_64-linux-gnu and aarch64-linux-gnu.
36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
/* Copyright (C) 1991-2021 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 <signal.h>
|
|
#include <errno.h>
|
|
#include <pthread.h>
|
|
|
|
/* Raise the signal SIG. */
|
|
int
|
|
raise (int sig)
|
|
{
|
|
int ret = __pthread_kill (__pthread_self (), sig);
|
|
if (ret != 0)
|
|
{
|
|
__set_errno (ret);
|
|
ret = -1;
|
|
}
|
|
return ret;
|
|
}
|
|
libc_hidden_def (raise)
|
|
weak_alias (raise, gsignal)
|