/*  Copyright (C) 2024 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#pragma once

#include <pthread.h>

/*!
 * \brief New thread using pthread_create() but with signals blocked.
 *
 * \note Some signals that are unpractical to block are still allowed.
 *
 * \param thr     Thread to be launched.
 * \param cb      Callback function to be launched in the thread.
 * \param ctx     Arbitrary context for the callback.
 *
 * \return Return value of ptherad_create().
 *
 * In order to avoid race conditions when the child thread is launched and
 * the signals are blocked within that thread afterwards, this method
 * temporarily blocks the signals in the parent thread, lets the child
 * inherit them blocked, and re-enables in the parent afterwards.
 */
int thread_create_nosignal(pthread_t *thr, void *(*cb)(void *), void *ctx);
