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...
The other thing is that I was new to references in C++ as I mostly used pointers before. Originally, I allocated the output queue as I was creating the thread and I was surprised that I wasn't getting any data from the first consumer. After a lot of debugging, I finally realized...
AI代码解释 // 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;} 2.3、源...
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 ...
See here, we are using the Peek method, and when we are using, they can simply print the value of the queue but don’t remove that value from the queue. 5. Count To find out how many elements are in the queue, utilize the Count property. As an illustration, consider this. ...
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 ...
// Let all the pointers to point to the terminator. // (unless pipe is dead, in which case c is set to NULL). r = w = f = &queue.back(); //就是让r、w、f、c四个指针都指向这个end迭代器 c.set(&queue.back()); }
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 ...
// 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...
#include <stdio.h> #define MAX_SIZE 100 // Define the maximum size of the queue int queue[MAX_SIZE]; // Array to store elements of the queue int front = -1, back = -1; // Initialize front and back pointers // Function to insert an element into the queue void enqueue(int item...