/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _X86_ATOMIC_BITSET_H_
#define _X86_ATOMIC_BITSET_H_
#include <stdint.h>
#include <stdbool.h>
struct AtomicBitset {
uint32_t numBits;
uint32_t words[];
};
#define ATOMIC_BITSET_SZ(numbits) (sizeof(struct AtomicBitset) + ((numbits) + 31) / 8)
#define ATOMIC_BITSET_DECL(nam, numbits, extra_keyword) extra_keyword uint8_t _##nam##_store [ATOMIC_BITSET_SZ(numbits)] __attribute__((aligned(4))); extra_keyword struct AtomicBitset *nam = (struct AtomicBitset*)_##nam##_store
void atomicBitsetInit(struct AtomicBitset *set, uint32_t numBits);
uint32_t atomicBitsetGetNumBits(const struct AtomicBitset *set);
bool atomicBitsetGetBit(const struct AtomicBitset *set, uint32_t num);
void atomicBitsetClearBit(struct AtomicBitset *set, uint32_t num);
int32_t atomicBitsetFindClearAndSet(struct AtomicBitset *set);
#endif