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/* Time-triggered process termination.
Copyright (C) 2016-2023 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 <support/xthread.h>
#include <support/xsignal.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <support/check.h>
#include <support/support.h>
#include <time.h>
#include <unistd.h>
struct delayed_exit_request
{
void (*exitfunc) (int);
int seconds;
};
static void *
delayed_exit_thread (void *closure)
{
struct delayed_exit_request *request = closure;
void (*exitfunc) (int) = request->exitfunc;
struct timespec delay = { request->seconds, 0 };
struct timespec remaining = { 0 };
free (request);
if (nanosleep (&delay, &remaining) != 0)
FAIL_EXIT1 ("nanosleep: %m");
/* Exit the process successfully. */
exitfunc (0);
return NULL;
}
static void
delayed_exit_1 (int seconds, void (*exitfunc) (int))
{
/* Create the new thread with all signals blocked. */
sigset_t all_blocked;
sigfillset (&all_blocked);
sigset_t old_set;
xpthread_sigmask (SIG_SETMASK, &all_blocked, &old_set);
struct delayed_exit_request *request = xmalloc (sizeof (*request));
request->seconds = seconds;
request->exitfunc = exitfunc;
/* Create a detached thread. */
pthread_t thr = xpthread_create (NULL, delayed_exit_thread, request);
xpthread_detach (thr);
/* Restore the original signal mask. */
xpthread_sigmask (SIG_SETMASK, &old_set, NULL);
}
void
delayed_exit (int seconds)
{
delayed_exit_1 (seconds, exit);
}
void
delayed__exit (int seconds)
{
delayed_exit_1 (seconds, _exit);
}
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