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/* Copyright (C) 2003-2023 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 <signal.h>
#include <unistd.h>
#include <support/xthread.h>
#include <support/xsignal.h>
#include <support/xthread.h>
static int the_sig;
static void
eintr_handler (int sig)
{
if (sig != the_sig)
{
/* empty if statement avoids warn unused result */
if (write (STDOUT_FILENO,
"eintr_handler: signal number wrong\n", 35) < 35) {};
_exit (1);
}
if (write (STDOUT_FILENO, ".", 1)) {/* Avoid warn unused result */};
}
static void *
eintr_source (void *arg)
{
struct timespec ts = { .tv_sec = 0, .tv_nsec = 500000 };
if (arg == NULL)
{
sigset_t ss;
sigemptyset (&ss);
sigaddset (&ss, the_sig);
xpthread_sigmask (SIG_BLOCK, &ss, NULL);
}
while (1)
{
if (arg != NULL)
pthread_kill (*(pthread_t *) arg, the_sig);
else
kill (getpid (), the_sig);
nanosleep (&ts, NULL);
}
/* NOTREACHED */
return NULL;
}
static void
setup_eintr (int sig, pthread_t *thp)
{
struct sigaction sa;
sigemptyset (&sa.sa_mask);
sa.sa_flags = 0;
sa.sa_handler = eintr_handler;
if (sigaction (sig, &sa, NULL) != 0)
{
puts ("setup_eintr: sigaction failed");
exit (1);
}
the_sig = sig;
/* Create the thread which will fire off the signals. */
xpthread_create (NULL, eintr_source, thp);
}
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