In this manner the portion of the memory space between the 'discard' pointer and the read pointer denotes data which has been in said memory space for at least two of said intervals. The system thereby defines ageing by means of pointers and avoids the ambiguities or inconvenience of known ...
QueuePointers_t xQueue;/*<队列指针,包含队列尾指针和队列读指针*/ SemaphoreData_t xSemaphore;/*<信号量,包含互斥量持有者和递归次数*/ } u; List_t xTasksWaitingToSend;/*等待发送任务列表。因为队列满,等待发送任务列表*/ List_t xTasksWaitingToReceive;/*<等待接收任务列表。因为队列空,等待接收的任务...
template <typename T> typename LockFreeStack<T>::HazardPointer LockFreeStack<T>::hazard_pointers_[kMaxHazardPointerNum]; 是定义静态成员数组hazard_pointers_[kMaxHazardPointerNum],也就是我们通常所说的静态成员数组初始化。语法相当丑陋,但是只能这么写。使用风险指针的方法实现内存回收虽然很简单,也的确安全地...
In the above screenshot, we are using the trim excess method to reduce the unused data from the queue. When we use the Dequeue() method at that time, it will peek the data from the queue and remove it from the queue as well, but at that time, it will not reduce the actual size ...
Now, therefore, we land in a situation of using queue and now we will go through the proper working: For implementing queue, we need to get two pointers which will continuously keep a track on both the ends and will get incremented when we need to enqueue an element from the front and...
// This class encapsulates several atomic operations on pointers.template<typenameT>classatomic_ptr_t{public:inlinevoidset(T*ptr_);//非原子操作inlineT*xchg(T*val_);//原子操作,设置一个新的值,然后返回旧的值inlineT*cas(T*cmp_,T*val_);//原子操作private:volatileT*ptr;} ...
[Using pointers]1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 class Solution { public: vector<int> smallestRange(vector<vector<int>>& nums) { int size = nums.size(); vector<int> next(size, 0);...
you open the file, seek a particular location, and read from or write to that file. RandomAccessFiles can be seen as "large" C-type byte arrays that you can access at any random index "directly" using pointers. File portions can be used as ByteBuffers if the portion is mapped into ...
two pointers FRONT and REAR FRONT track the first element of the queue REAR track the last element of the queue initially, set value of FRONT and REAR to -1 Enqueue Operation check if the queue is full for the first element, set the value of FRONT to 0 increase the REAR index by 1 ...
// FIXME: use unique_ptr<Timer>instead of raw pointers. typedef std::pair<Timestamp, Timer*>Entry;typedef std::set<Entry>TimerList;typedef std::pair<Timer*, int64_t>ActiveTimer;typedef std::set<ActiveTimer>ActiveTimerSet;void addTimerInLoop(Timer* timer);void cancelInLoop(TimerId timerId...