bind9/lib/isc/lib.c
Ondřej Surý 4917ffa61b
Explicitly create and shutdown the call_rcu_thread
As the default_call_rcu_thread can't be forced to flush all the work
during the executable shutdown, create one call_rcu_thread explicitly
and assign it to the all created threads.

This allows this explicit call_rcu_thread to be unassociated from the
main thread and freed before the executable destructor exits.
2025-02-22 16:19:01 +01:00

82 lines
1.7 KiB
C

/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
/*! \file */
#include <isc/crypto.h>
#include <isc/hash.h>
#include <isc/iterated_hash.h>
#include <isc/md.h>
#include <isc/mem.h>
#include <isc/os.h>
#include <isc/refcount.h>
#include <isc/tls.h>
#include <isc/urcu.h>
#include <isc/util.h>
#include <isc/uv.h>
#include <isc/xml.h>
#include "mem_p.h"
#include "mutex_p.h"
#include "os_p.h"
#include "thread_p.h"
/***
*** Functions
***/
static isc_refcount_t isc__lib_references = 0;
void
isc__lib_initialize(void);
void
isc__lib_shutdown(void);
void
isc__lib_initialize(void) {
if (isc_refcount_increment0(&isc__lib_references) > 0) {
return;
}
rcu_register_thread();
isc__thread_initialize();
isc__os_initialize();
isc__mutex_initialize();
isc__mem_initialize();
isc__log_initialize();
isc__crypto_initialize();
isc__uv_initialize();
isc__xml_initialize();
isc__hash_initialize();
isc__iterated_hash_initialize();
(void)isc_os_ncpus();
}
void
isc__lib_shutdown(void) {
if (isc_refcount_decrement(&isc__lib_references) > 1) {
return;
}
isc__iterated_hash_shutdown();
isc__xml_shutdown();
isc__uv_shutdown();
isc__crypto_shutdown();
isc__log_shutdown();
isc__mem_shutdown();
isc__mutex_shutdown();
isc__os_shutdown();
isc__thread_shutdown();
/* should be after isc__mem_shutdown() which calls rcu_barrier() */
rcu_unregister_thread();
}