LockFreeQueue(const LockFreeQueue& other) = delete; LockFreeQueue& operator=(const LockFreeQueue& other) = delete; LockFreeQueue(LockFreeQueue&& other) = delete; LockFreeQueue& operator=(LockFreeQueue&& other) = delete; bool IsEmpty() const { return head_.load(std::memory_order_relaxed)....
bool LockFreeQueue::Init(void){flags_array_=new(std::nothrow)char[size_];if(flags_array_==NULL)returnfalse;memset(flags_array_,0,size_);ring_array_=reinterpret_cast(new(std::nothrow)char[size_*sizeof(ElementT)]);if(ring_array_==NULL)returnfalse;memset(ring_array_,0,size_*sizeof(El...
lockFreeQueue[tail]=data;//注意编译器或者CPU可能会为了提升性能将代码乱序,为了上下两句代码不颠倒顺序,这里需要加上内存屏障tail++;returntrue; }boolpop(T &data) {if(ifEmpty()) {//head == tailreturnfalse; } data=lockFreeQueue[head];//内存屏障head++;returntrue; } 多生产者单消费者/单生成者...
lockFreeQueue[tail]=data;//注意编译器或者CPU可能会为了提升性能将代码乱序,为了上下两句代码不颠倒顺序,这里需要加上内存屏障tail++;returntrue; }boolpop(T &data) {if(ifEmpty()) {//head == tailreturnfalse; } data=lockFreeQueue[head];//内存屏障head++;returntrue; } 多生产者单消费者/单生成者...
C++ lock free queue CAS(compare and swap ),是一条原子指令,用于多线程中实现同步。它将一个内存位置的内容与一个给定值进行比较,只有当它们相同时,才将该内存位置的内容修改为一个新的给定值。这是作为一个单一的原子操作完成的。原子性保证了新值是根据最新的信息计算出来的;如果在此期间该值被另一个线程...
class lock_free_queue { static_assert(is_move_constructible<T>::value, "should be a movable type"); public: lock_free_queue(size_t size = 1024) : buffer_(size), buffer_mask_(size - 1), enqueue_pos_(0), dequeue_pos_(0) { ...
boost lockfree queue-boost无锁队列「建议收藏」 大家好,又见面了,我是你们的朋友全栈君。 例子如下: 代码语言:javascript 复制 #include<iostream>#include<boost/lockfree/queue.hpp>intmain(){boost::lockfree::queue<int,boost::lockfree::fixed_sized<false>>queue(128);for(int i=0;i<10000;i++)...
To do this, you can push data into a queue using one thread and process it using a different thread-a good utilization of resources on multicore processors. One thread inserts data into the queue, and the other reads/deletes elements from the queue. Your main requirement is that a high-...
boost::lockfree::queue: 支持多个生产者和多个消费者线程的无锁队列。 boost::lockfree::stack: 支持多个生产者和多个消费者线程的无锁栈。 boost::lockfree::spsc_queue: 仅支持单个生产者和单个消费者线程的无锁队列。相比boost::lockfree::queue,其效率更高。
lockfreequeues Lock-free queues for Nim, implemented as ring buffers. Three implementations are provided: Sipsic is a single-producer, single-consumer bounded queue. Pushing and popping are wait-free. Mupsic is a multi-producer, single-consumer bounded queue. Popping is wait-free. Mupmuc is ...