+++ /dev/null
-/*
- * 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.
- */
-
-#pragma once
-
-#include <inttypes.h>
-#include <stdbool.h>
-#if HAVE_UCHAR_H
-#include <uchar.h>
-#endif /* HAVE_UCHAR_H */
-
-#include <isc/mutex.h>
-#include <isc/util.h>
-
-#if !defined(__has_feature)
-#define __has_feature(x) 0
-#endif /* if !defined(__has_feature) */
-
-#if !defined(__has_extension)
-#define __has_extension(x) __has_feature(x)
-#endif /* if !defined(__has_extension) */
-
-#if !defined(__GNUC_PREREQ__)
-#if defined(__GNUC__) && defined(__GNUC_MINOR__)
-#define __GNUC_PREREQ__(maj, min) \
- ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
-#else /* if defined(__GNUC__) && defined(__GNUC_MINOR__) */
-#define __GNUC_PREREQ__(maj, min) 0
-#endif /* if defined(__GNUC__) && defined(__GNUC_MINOR__) */
-#endif /* if !defined(__GNUC_PREREQ__) */
-
-#if !defined(__CLANG_ATOMICS) && !defined(__GNUC_ATOMICS)
-#if __has_extension(c_atomic) || __has_extension(cxx_atomic)
-#define __CLANG_ATOMICS
-#elif __GNUC_PREREQ__(4, 7)
-#define __GNUC_ATOMICS
-#elif !defined(__GNUC__)
-#error "isc/stdatomic.h does not support your compiler"
-#endif /* if __has_extension(c_atomic) || __has_extension(cxx_atomic) */
-#endif /* if !defined(__CLANG_ATOMICS) && !defined(__GNUC_ATOMICS) */
-
-#ifndef __ATOMIC_RELAXED
-#define __ATOMIC_RELAXED 0
-#endif /* ifndef __ATOMIC_RELAXED */
-#ifndef __ATOMIC_CONSUME
-#define __ATOMIC_CONSUME 1
-#endif /* ifndef __ATOMIC_CONSUME */
-#ifndef __ATOMIC_ACQUIRE
-#define __ATOMIC_ACQUIRE 2
-#endif /* ifndef __ATOMIC_ACQUIRE */
-#ifndef __ATOMIC_RELEASE
-#define __ATOMIC_RELEASE 3
-#endif /* ifndef __ATOMIC_RELEASE */
-#ifndef __ATOMIC_ACQ_REL
-#define __ATOMIC_ACQ_REL 4
-#endif /* ifndef __ATOMIC_ACQ_REL */
-#ifndef __ATOMIC_SEQ_CST
-#define __ATOMIC_SEQ_CST 5
-#endif /* ifndef __ATOMIC_SEQ_CST */
-
-enum memory_order {
- memory_order_relaxed = __ATOMIC_RELAXED,
- memory_order_consume = __ATOMIC_CONSUME,
- memory_order_acquire = __ATOMIC_ACQUIRE,
- memory_order_release = __ATOMIC_RELEASE,
- memory_order_acq_rel = __ATOMIC_ACQ_REL,
- memory_order_seq_cst = __ATOMIC_SEQ_CST
-};
-
-typedef enum memory_order memory_order;
-
-#define ___TYPEDEF(type, name, orig) \
- typedef struct name { \
- isc_mutex_t m; \
- orig v; \
- } type;
-
-#define _TYPEDEF_S(type) ___TYPEDEF(atomic_##type, atomic_##type##_s, type)
-#define _TYPEDEF_O(type, orig) \
- ___TYPEDEF(atomic_##type, atomic_##type##_s, orig)
-#define _TYPEDEF_T(type) \
- ___TYPEDEF(atomic_##type##_t, atomic_##type##_s, type##_t)
-
-#ifndef HAVE_UCHAR_H
-typedef uint_least16_t char16_t;
-typedef uint_least32_t char32_t;
-#endif /* HAVE_UCHAR_H */
-
-_TYPEDEF_S(bool);
-_TYPEDEF_S(char);
-_TYPEDEF_O(schar, signed char);
-_TYPEDEF_O(uchar, unsigned char);
-_TYPEDEF_S(short);
-_TYPEDEF_O(ushort, unsigned short);
-_TYPEDEF_S(int);
-_TYPEDEF_O(uint, unsigned int);
-_TYPEDEF_S(long);
-_TYPEDEF_O(ulong, unsigned long);
-_TYPEDEF_O(llong, long long);
-_TYPEDEF_O(ullong, unsigned long long);
-_TYPEDEF_T(char16);
-_TYPEDEF_T(char32);
-_TYPEDEF_T(wchar);
-_TYPEDEF_T(int_least8);
-_TYPEDEF_T(uint_least8);
-_TYPEDEF_T(int_least16);
-_TYPEDEF_T(uint_least16);
-_TYPEDEF_T(int_least32);
-_TYPEDEF_T(uint_least32);
-_TYPEDEF_T(int_least64);
-_TYPEDEF_T(uint_least64);
-_TYPEDEF_T(int_fast8);
-_TYPEDEF_T(uint_fast8);
-_TYPEDEF_T(int_fast16);
-_TYPEDEF_T(uint_fast16);
-_TYPEDEF_T(int_fast32);
-_TYPEDEF_T(uint_fast32);
-_TYPEDEF_T(int_fast64);
-_TYPEDEF_T(uint_fast64);
-_TYPEDEF_T(intptr);
-_TYPEDEF_T(uintptr);
-_TYPEDEF_T(size);
-_TYPEDEF_T(ptrdiff);
-_TYPEDEF_T(intmax);
-_TYPEDEF_T(uintmax);
-
-#undef ___TYPEDEF
-#undef _TYPEDEF_S
-#undef _TYPEDEF_T
-#undef _TYPEDEF_O
-
-#define arg \
- { \
- .m = PTHREAD_MUTEX_INITIALIZER, .v = arg \
- }
-
-#define atomic_init(obj, desired) \
- { \
- isc_mutex_init(&(obj)->m); \
- (obj)->v = desired; \
- }
-#define atomic_load_explicit(obj, order) \
- ({ \
- typeof((obj)->v) ___v; \
- REQUIRE(isc_mutex_lock(&(obj)->m) == ISC_R_SUCCESS); \
- ___v = (obj)->v; \
- REQUIRE(isc_mutex_unlock(&(obj)->m) == ISC_R_SUCCESS); \
- ___v; \
- })
-#define atomic_store_explicit(obj, desired, order) \
- { \
- REQUIRE(isc_mutex_lock(&(obj)->m) == ISC_R_SUCCESS); \
- (obj)->v = desired; \
- REQUIRE(isc_mutex_unlock(&(obj)->m) == ISC_R_SUCCESS); \
- }
-#define atomic_fetch_add_explicit(obj, arg, order) \
- ({ \
- typeof((obj)->v) ___v; \
- REQUIRE(isc_mutex_lock(&(obj)->m) == ISC_R_SUCCESS); \
- ___v = (obj)->v; \
- (obj)->v += arg; \
- REQUIRE(isc_mutex_unlock(&(obj)->m) == ISC_R_SUCCESS); \
- ___v; \
- })
-#define atomic_fetch_sub_explicit(obj, arg, order) \
- ({ \
- typeof((obj)->v) ___v; \
- REQUIRE(isc_mutex_lock(&(obj)->m) == ISC_R_SUCCESS); \
- ___v = (obj)->v; \
- (obj)->v -= arg; \
- REQUIRE(isc_mutex_unlock(&(obj)->m) == ISC_R_SUCCESS); \
- ___v; \
- })
-#define atomic_fetch_and_explicit(obj, arg, order) \
- ({ \
- typeof((obj)->v) ___v; \
- REQUIRE(isc_mutex_lock(&(obj)->m) == ISC_R_SUCCESS); \
- ___v = (obj)->v; \
- (obj)->v &= arg; \
- REQUIRE(isc_mutex_unlock(&(obj)->m) == ISC_R_SUCCESS); \
- ___v; \
- })
-#define atomic_fetch_or_explicit(obj, arg, order) \
- ({ \
- typeof((obj)->v) ___v; \
- REQUIRE(isc_mutex_lock(&(obj)->m) == ISC_R_SUCCESS); \
- ___v = (obj)->v; \
- (obj)->v |= arg; \
- REQUIRE(isc_mutex_unlock(&(obj)->m) == ISC_R_SUCCESS); \
- ___v; \
- })
-#define atomic_compare_exchange_strong_explicit(obj, expected, desired, succ, \
- fail) \
- ({ \
- bool ___v; \
- REQUIRE(isc_mutex_lock(&(obj)->m) == ISC_R_SUCCESS); \
- ___v = ((obj)->v == *expected); \
- *expected = (obj)->v; \
- (obj)->v = ___v ? desired : (obj)->v; \
- REQUIRE(isc_mutex_unlock(&(obj)->m) == ISC_R_SUCCESS); \
- ___v; \
- })
-#define atomic_compare_exchange_weak_explicit(obj, expected, desired, succ, \
- fail) \
- ({ \
- bool ___v; \
- REQUIRE(isc_mutex_lock(&(obj)->m) == ISC_R_SUCCESS); \
- ___v = ((obj)->v == *expected); \
- *expected = (obj)->v; \
- (obj)->v = ___v ? desired : (obj)->v; \
- REQUIRE(isc_mutex_unlock(&(obj)->m) == ISC_R_SUCCESS); \
- ___v; \
- })
-
-#define atomic_load(obj) atomic_load_explicit(obj, memory_order_seq_cst)
-#define atomic_store(obj, arg) \
- atomic_store_explicit(obj, arg, memory_order_seq_cst)
-#define atomic_fetch_add(obj, arg) \
- atomic_fetch_add_explicit(obj, arg, memory_order_seq_cst)
-#define atomic_fetch_sub(obj, arg) \
- atomic_fetch_sub_explicit(obj, arg, memory_order_seq_cst)
-#define atomic_fetch_and(obj, arg) \
- atomic_fetch_and_explicit(obj, arg, memory_order_seq_cst)
-#define atomic_fetch_or(obj, arg) \
- atomic_fetch_or_explicit(obj, arg, memory_order_seq_cst)
-#define atomic_compare_exchange_strong(obj, expected, desired) \
- atomic_compare_exchange_strong_explicit(obj, expected, desired, \
- memory_order_seq_cst, \
- memory_order_seq_cst)
-#define atomic_compare_exchange_weak(obj, expected, desired) \
- atomic_compare_exchange_weak_explicit(obj, expected, desired, \
- memory_order_seq_cst, \
- memory_order_seq_cst)
-#define atomic_exchange_explicit(obj, desired, order) \
- ({ \
- typeof((obj)->v) ___v; \
- REQUIRE(isc_mutex_lock(&(obj)->m) == ISC_R_SUCCESS); \
- ___v = (obj)->v; \
- (obj)->v = desired; \
- REQUIRE(isc_mutex_unlock(&(obj)->m) == ISC_R_SUCCESS); \
- ___v; \
- })
-#define atomic_exchange(obj, desired) \
- atomic_exchange_explicit(obj, desired, memory_order_seq_cst)
projects / thirdparty / bind9.git / commitdiff
