mirror of
https://sourceware.org/git/glibc.git
synced 2025-10-30 10:45:40 +03:00
59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
/* Copyright (C) 2002-2015 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 <limits.h>
|
|
#include <signal.h>
|
|
#include <sysdep.h>
|
|
#include <nptl/pthreadP.h>
|
|
|
|
|
|
int
|
|
raise (sig)
|
|
int sig;
|
|
{
|
|
struct pthread *pd = THREAD_SELF;
|
|
pid_t pid = THREAD_GETMEM (pd, pid);
|
|
pid_t selftid = THREAD_GETMEM (pd, tid);
|
|
if (selftid == 0)
|
|
{
|
|
/* This system call is not supposed to fail. */
|
|
#ifdef INTERNAL_SYSCALL
|
|
INTERNAL_SYSCALL_DECL (err);
|
|
selftid = INTERNAL_SYSCALL (gettid, err, 0);
|
|
#else
|
|
selftid = INLINE_SYSCALL (gettid, 0);
|
|
#endif
|
|
THREAD_SETMEM (pd, tid, selftid);
|
|
|
|
/* We do not set the PID field in the TID here since we might be
|
|
called from a signal handler while the thread executes fork. */
|
|
pid = selftid;
|
|
}
|
|
else
|
|
/* raise is an async-safe function. It could be called while the
|
|
fork/vfork function temporarily invalidated the PID field. Adjust for
|
|
that. */
|
|
if (__glibc_unlikely (pid <= 0))
|
|
pid = (pid & INT_MAX) == 0 ? selftid : -pid;
|
|
|
|
return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
|
|
}
|
|
libc_hidden_def (raise)
|
|
weak_alias (raise, gsignal)
|