Gecko [ bestcars.gr ]

Name	Size	Permission
aes.h	1015 B	-rw-r--r--
align.h	569 B	-rw-r--r--
app.h	6.97 KB	-rw-r--r--
assertions.h	2.17 KB	-rw-r--r--
astack.h	1.11 KB	-rw-r--r--
atomic.h	3.01 KB	-rw-r--r--
backtrace.h	3.8 KB	-rw-r--r--
barrier.h	1.03 KB	-rw-r--r--
base32.h	4.35 KB	-rw-r--r--
base64.h	2.8 KB	-rw-r--r--
bind9.h	829 B	-rw-r--r--
buffer.h	29.91 KB	-rw-r--r--
bufferlist.h	1.42 KB	-rw-r--r--
cmocka.h	1.35 KB	-rw-r--r--
commandline.h	1.67 KB	-rw-r--r--
condition.h	1.87 KB	-rw-r--r--
counter.h	1.88 KB	-rw-r--r--
crc64.h	998 B	-rw-r--r--
deprecated.h	662 B	-rw-r--r--
dir.h	1.51 KB	-rw-r--r--
endian.h	4.75 KB	-rw-r--r--
errno.h	659 B	-rw-r--r--
errno2result.h	901 B	-rw-r--r--
error.h	1.4 KB	-rw-r--r--
event.h	3.36 KB	-rw-r--r--
eventclass.h	1.41 KB	-rw-r--r--
file.h	11.4 KB	-rw-r--r--
formatcheck.h	940 B	-rw-r--r--
fsaccess.h	7.28 KB	-rw-r--r--
fuzz.h	593 B	-rw-r--r--
hash.h	1.61 KB	-rw-r--r--
heap.h	5.14 KB	-rw-r--r--
hex.h	2.74 KB	-rw-r--r--
hmac.h	3.88 KB	-rw-r--r--
hp.h	4.48 KB	-rw-r--r--
ht.h	4.38 KB	-rw-r--r--
httpd.h	2.24 KB	-rw-r--r--
interfaceiter.h	3.07 KB	-rw-r--r--
iterated_hash.h	933 B	-rw-r--r--
lang.h	686 B	-rw-r--r--
lex.h	9.77 KB	-rw-r--r--
lfsr.h	2.89 KB	-rw-r--r--
lib.h	1.13 KB	-rw-r--r--
likely.h	868 B	-rw-r--r--
list.h	7.9 KB	-rw-r--r--
log.h	25.88 KB	-rw-r--r--
magic.h	999 B	-rw-r--r--
managers.h	776 B	-rw-r--r--
md.h	5.63 KB	-rw-r--r--
mem.h	17.66 KB	-rw-r--r--
meminfo.h	710 B	-rw-r--r--
mutex.h	4.08 KB	-rw-r--r--
mutexatomic.h	9.56 KB	-rw-r--r--
mutexblock.h	1.13 KB	-rw-r--r--
net.h	8.36 KB	-rw-r--r--
netaddr.h	4.67 KB	-rw-r--r--
netdb.h	860 B	-rw-r--r--
netmgr.h	15.36 KB	-rw-r--r--
netscope.h	966 B	-rw-r--r--
nonce.h	743 B	-rw-r--r--
offset.h	687 B	-rw-r--r--
once.h	767 B	-rw-r--r--
os.h	765 B	-rw-r--r--
parseint.h	1.5 KB	-rw-r--r--
platform.h	1.82 KB	-rw-r--r--
pool.h	3.41 KB	-rw-r--r--
portset.h	3.22 KB	-rw-r--r--
print.h	680 B	-rw-r--r--
queue.h	1.31 KB	-rw-r--r--
quota.h	3.48 KB	-rw-r--r--
radix.h	6.85 KB	-rw-r--r--
random.h	1.45 KB	-rw-r--r--
ratelimiter.h	3.41 KB	-rw-r--r--
refcount.h	4.98 KB	-rw-r--r--
regex.h	767 B	-rw-r--r--
region.h	2.18 KB	-rw-r--r--
resource.h	2.79 KB	-rw-r--r--
result.h	5.45 KB	-rw-r--r--
resultclass.h	1.56 KB	-rw-r--r--
rwlock.h	2.48 KB	-rw-r--r--
safe.h	1.12 KB	-rw-r--r--
serial.h	1.33 KB	-rw-r--r--
siphash.h	916 B	-rw-r--r--
sockaddr.h	6.13 KB	-rw-r--r--
socket.h	23.55 KB	-rw-r--r--
stat.h	803 B	-rw-r--r--
stats.h	6.53 KB	-rw-r--r--
stdatomic.h	8.9 KB	-rw-r--r--
stdio.h	1.69 KB	-rw-r--r--
stdtime.h	1.36 KB	-rw-r--r--
strerr.h	575 B	-rw-r--r--
string.h	851 B	-rw-r--r--
symtab.h	4.22 KB	-rw-r--r--
syslog.h	843 B	-rw-r--r--
task.h	16.72 KB	-rw-r--r--
taskpool.h	3.2 KB	-rw-r--r--
thread.h	1.86 KB	-rw-r--r--
time.h	10.85 KB	-rw-r--r--
timer.h	7.77 KB	-rw-r--r--
tm.h	894 B	-rw-r--r--
types.h	5.72 KB	-rw-r--r--
url.h	2.62 KB	-rw-r--r--
utf8.h	928 B	-rw-r--r--
util.h	13.96 KB	-rw-r--r--
version.h	499 B	-rw-r--r--

Code Editor : hp.h

/*
 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 *
 * 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.
 */

/*
 * Hazard Pointer implementation.
 *
 * This work is based on C++ code available from:
 * https://github.com/pramalhe/ConcurrencyFreaks/
 *
 * Copyright (c) 2014-2016, Pedro Ramalhete, Andreia Correia
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Concurrency Freaks nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER>
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#include <isc/atomic.h>
#include <isc/mem.h>
#include <isc/string.h>
#include <isc/types.h>
#include <isc/util.h>

/*%
 * Hazard pointers are a mechanism for protecting objects in memory
 * from being deleted by other threads while in use. This allows
 * safe lock-free data structures.
 *
 * This is an adaptation of the ConcurrencyFreaks implementation in C.
 * More details available at https://github.com/pramalhe/ConcurrencyFreaks,
 * in the file HazardPointers.hpp.
 */

typedef void(isc_hp_deletefunc_t)(void *);

void
isc_hp_init(int max_threads);
/*%<
 * Initialize hazard pointer constants - isc__hp_max_threads. If more threads
 * will try to access hp it will assert.
 */

isc_hp_t *
isc_hp_new(isc_mem_t *mctx, size_t max_hps, isc_hp_deletefunc_t *deletefunc);
/*%<
 * Create a new hazard pointer array of size 'max_hps' (or a reasonable
 * default value if 'max_hps' is 0). The function 'deletefunc' will be
 * used to delete objects protected by hazard pointers when it becomes
 * safe to retire them.
 */

void
isc_hp_destroy(isc_hp_t *hp);
/*%<
 * Destroy a hazard pointer array and clean up all objects protected
 * by hazard pointers.
 */

void
isc_hp_clear(isc_hp_t *hp);
/*%<
 * Clear all hazard pointers in the array for the current thread.
 *
 * Progress condition: wait-free bounded (by max_hps)
 */

void
isc_hp_clear_one(isc_hp_t *hp, int ihp);
/*%<
 * Clear a specified hazard pointer in the array for the current thread.
 *
 * Progress condition: wait-free population oblivious.
 */

uintptr_t
isc_hp_protect(isc_hp_t *hp, int ihp, atomic_uintptr_t *atom);
/*%<
 * Protect an object referenced by 'atom' with a hazard pointer for the
 * current thread.
 *
 * Progress condition: lock-free.
 */

uintptr_t
isc_hp_protect_ptr(isc_hp_t *hp, int ihp, atomic_uintptr_t ptr);
/*%<
 * This returns the same value that is passed as ptr, which is sometimes
 * useful.
 *
 * Progress condition: wait-free population oblivious.
 */

uintptr_t
isc_hp_protect_release(isc_hp_t *hp, int ihp, atomic_uintptr_t ptr);
/*%<
 * Same as isc_hp_protect_ptr(), but explicitly uses memory_order_release.
 *
 * Progress condition: wait-free population oblivious.
 */

void
isc_hp_retire(isc_hp_t *hp, uintptr_t ptr);
/*%<
 * Retire an object that is no longer in use by any thread, calling
 * the delete function that was specified in isc_hp_new().
 *
 * Progress condition: wait-free bounded (by the number of threads squared)
 */

${this.title}

Code Editor : hp.h