qq_41484228的博客

介绍了std::future, std::promise, std::async和std::packaged_task的用法。

C++虚函数表

C++ new 和 operator new的区别

#ifndef THREADPOOL_H#define THREADPOOL_H#include <list>#include <cstdio>#include <exception>#include <pthread.h>#include "locker.h"// 线程池类，定义为模板类是为了代码复用，模板参数T是任务类template< typename T >class threadpool{public:

#ifndef PROCESSPOOL_H#define PROCESSPOOL_H#include <sys/types.h>#include <sys/socket.h>#include <netinet/in.h>#include <arpa/inet.h>#include <assert.h>#include <stdio.h>#include <unistd.h>#include <err

#include <sys/socket.h>#include <fcntl.h>#include <stdio.h>#include <unistd.h>#include <stdlib.h>#include <assert.h>#include <string.h>static const int CONTROL_LEN = CMSG_LEN(sizeof(int));// 发送文件描述符，fd参数适用

服务器代码如下：#include <sys/socket.h>#include <netinet/in.h>#include <arpa/inet.h>#include <assert.h>#include <stdio.h>#include <unistd.h>#include <errno.h>#include <string.h>#include <fcntl.h>#incl

#include <sys/sem.h>#include <stdio.h>#include <stdlib.h>#include <unistd.h>#include <sys/wait.h>union semun { // 此结构体为semctl系统调用的第四个参数的推荐格式，由sys/sem.h给出 int val; // 用于SETVAL命令

#ifndef MIN_HEAP#define MIN_HEAP#include <iostream>#include <netinet/in.h>#include <time.h>using std::exception;#define BUFFER_SIZE 64class heap_timer;struct client_data { sockaddr_in address; int sockfd; char buf[B

其中依赖的lst_timer.h见上篇文章#include <sys/types.h>#include <sys/socket.h>#include <netinet/in.h>#include <arpa/inet.h>#include <assert.h>#include <stdio.h>#include <signal.h>#include <unistd.h>#include <

#include <iostream>using namespace std;class parent1{ public: int c; virtual void funcA() { cout << "parent1 funcA"; }; protected: int f; private: int a; int b;};clas

priority_queue是C++的一种STL容器，实现为堆。在leetcode刷题中非常常用。有些时候我们需要塞入自定义的数据结构。这样就需要对其的排序方式做一个重新定义。假设有以下数据结构struct node { int x; int y;};对比方式为只看x的大小。则对比函数cmp写法如下：#include<iostream>#include<queue>using namespace std;//函数对象类template <typenam