#include <iostream> #include <ctime> #include <uuid/uuid.h> #include <unistd.h> #include "Model/BookStruct.cpp" #include <string.h> #include <typeinfo> #include <ostream> #include <fstream> #include <sstream> using namespace std; char *uuidValue = (char *)malloc(40); char *dtValue = (char *)malloc(20); char *getUuid1() { uuid_t newUUID; uuid_generate(newUUID); uuid_unparse(newUUID, uuidValue); return uuidValue; } void readFile10() { string fileName="log.txt"; ifstream rFile; rFile.open(fileName,std::ios_base::in); if(!rFile.is_open()) { cout<<"Open log.txt failed!"<<endl; return; } string line; int num=0; while(getline(rFile,line)) { if(++num%1000000==0) { cout<<"Num="<<num<<",line="<<line<<",now is "<<getTime7()<<endl; } } rFile.close(); free(uuidValue); free(dtValue); cout<<"Finished in readFil10()"<<endl; } void logFile9() { string fileName = "log.txt"; ofstream wFile; wFile.open(fileName, std::ios_base::app); if (!wFile.is_open()) { cout << "Create log.txt failed!" << endl; return; } int loops=100,repeatedTimes=1000000; int num=0; stringstream ss; for(int i=0;i<loops;i++) { for(int j=0;j<repeatedTimes;j++) { ss<<++num<<","<<getUuid1()<<endl; } wFile<<ss.str(); ss=stringstream(); cout<<"Num="<<num<<",now is "<<getTime7()<<endl; } wFile.close(); free(uuidValue); free(dtValue); cout<<"Finished in logFile9()"<<endl; }
原文链接: https://www.cnblogs.com/Fred1987/p/15864886.html
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