atomic integer

/*************************************************************************    > File Name: AtomicInteger.h    > Author: wangzhicheng    > Mail: 2363702560@QQ.com    > Created Time: 2017-02-20    > statement: PRovide atomic integer and Operation for multithread ************************************************************************/#ifndef _ATOMIC_INTEGER_H_#define _ATMOIC_INTEGER_H_#include <stdio.h>#include <stdint.h>#include <stdlib.h>#include <unistd.h>#include <string.h>#include <pthread.h>#include <iostream>using namespace std;/** *@brief provide atomic integer and operation for multithread */template<class T>class AtomicInteger {	private:		volatile T value;	// prevent g++ to optimize the value	public:		AtomicInteger():value(0) {		}		/* 		 *@brief get the original value  		 * */		T GetValue() {			// if value == 0 then value = 0 and return the original value			return __sync_val_compare_and_swap(&value, 0, 0);		}		/* 		 *@brief suffix ++ such as a++ 		* */		T operator ++ (int) {			return __sync_fetch_and_add(&value, 1);		}		/* 		 *@brief prefix ++ such as ++a 		* */		T operator ++ () {			return __sync_add_and_fetch(&value, 1);		}		/* 		 *@brief 加某个数 		* */		T operator + (int num) {			return __sync_add_and_fetch(&value, num);		}		/* 		 *@brief 减某个数 		* */		T operator - (int num) {			return __sync_add_and_fetch(&value, -num);		}		/* 		 *@brief suffix -- such as a-- 		* */		T operator -- (int) {			return __sync_fetch_and_add(&value, -1);		}		/* 		 *@brief prefix -- such as --a 		* */		T operator -- () {			return __sync_add_and_fetch(&value, -1);		}		/* 		 *@brief add operation 		* */		T operator + (const T &other) {			return __sync_add_and_fetch(&value, other);		}		/* 		 *@brief = operation 		* */		T operator = (const T &newValue) {			return __sync_lock_test_and_set(&value, newValue);		}		};//nstypedef AtomicInteger<uint64_t>AtomicInt64;typedef AtomicInteger<uint32_t>AtomicInt32;#endif