C/C++ 编程小工具
编写了 tools.h 和 tools.cpp，用于 Debug、性能测试、打印日志。
tools.h
#ifndef TOOLS_H
#define TOOLS_H#include <time.h>
#include <fstream>
#include <iostream>
#include <random>
#include <chrono>
#include <vector>
#include <algorithm>using namespace std;// 换行
#define pn puts("")// 代码位置
#define where printf("File: %s, Line: %d, Function: %s. ", __FILE__, __LINE__, __FUNCTION__)// 打印错误
#define ErrorInfo(format, ...) \{ \printf("[Error] "); \where; \printf(format, ##__VA_ARGS__); \pn; \}// 捕获异常
#define Try(code) \try \{ \code; \} \catch (const std::exception &e) \{ \std::cerr << "Catch exception: " << e.what() << std::endl; \where; \return -1; \}// 日志文件
#define LOGFILE "Log.txt"// 写日志
#define Log(str) PrintLog(str, __FILE__, __LINE__, __FUNCTION__);/*** @brief 打印日志文件*/
void PrintLog(char *str, const char *FILE, const int LINE, const char *FUNCTION);// #######################################################################################################extern std::chrono::steady_clock::time_point TM_start, TM_end; // 记录时钟周期
extern std::vector<int64_t> TM_mem; // 存储循环测试结果#define To_ns(dur) std::chrono::duration_cast<std::chrono::nanoseconds>(dur).count() // clock -> ns
#define To_us(dur) std::chrono::duration_cast<std::chrono::microseconds>(dur).count() // clock -> us
#define To_ms(dur) std::chrono::duration_cast<std::chrono::milliseconds>(dur).count() // clock -> ms// 计时器
#define Timer(str, code) \TM_start = std::chrono::steady_clock::now(); \code; \TM_end = std::chrono::steady_clock::now(); \printf("Running Time of <%s>:\t%15.6f ms\n", \str, double(To_ns(TM_end - TM_start)) / 1000000);// 循环测试
#define Loop(loop, str, code) \TM_mem.resize(loop, 0); \for (int __i = 0; __i < loop; __i++) \{ \TM_start = std::chrono::steady_clock::now(); \{ \code; \} \TM_end = std::chrono::steady_clock::now(); \TM_mem[__i] = To_ns(TM_end - TM_start); \} \Analyis_TM(loop, str);void Analyis_TM(int loop, const char *str); // 分析代码性能// #######################################################################################################/*** @brief 自定义分配器，确保内存块是 32 字节对齐的*/
template <typename T>
class AlignedAllocator
{
public:using value_type = T;using pointer = T *;using const_pointer = const T *;using reference = T &;using const_reference = const T &;using size_type = std::size_t;using difference_type = std::ptrdiff_t;template <typename U>struct rebind{using other = AlignedAllocator<U>;};pointer allocate(size_type n){return static_cast<pointer>(std::aligned_alloc(32, n * sizeof(T)));}void deallocate(pointer p, size_type) noexcept{std::free(p);}
};/*** @brief 具有 32-Btyes 对齐的内存*/
typedef vector<int32_t, AlignedAllocator<int32_t>> AlignedVcetor;#endif // TOOLS_Htools.cpp
#include "tools.h"void PrintLog(char *str, const char *FILE, const int LINE, const char *FUNCTION)
{fstream fout;fout.open(LOGFILE, ios::out | ios::app); // 追加if (fout.is_open()){time_t timep;time(&timep); // 获取从1970至今过了多少秒string t(ctime(&timep)); // 秒数转化成字符串格式，格式：Tue Oct 8 16:15:42 2024fout << t; // 记录时间fout << "File: " << FILE << ", Line: " << LINE<< ", Function: " << FUNCTION << ". "; // 记录位置fout << str << endl; // 记录日志信息fout.flush(); // 立即写fout.close();}else{ErrorInfo("Failed to open the file %s.", LOGFILE);}
}//########################################################################################################std::chrono::steady_clock::time_point TM_start{}, TM_end{};
std::vector<int64_t> TM_mem{};void Analyis_TM(int loop, const char *str)
{int64_t min, max, med, aver = 0;auto lt = [](int64_t a, int64_t b){ return (a < b); };std::sort(TM_mem.data(), TM_mem.data() + loop, lt);min = TM_mem[0];max = TM_mem[loop - 1];med = TM_mem[loop >> 1];for (int i = 0; i < loop; i++){aver += TM_mem[i];}aver /= loop;printf("Running Time of <%s>:\n\tLoop\t%10d times\n""\tMinimum\t%15.6f ms\n""\tMaximum\t%15.6f ms\n""\tMedian\t%15.6f ms\n""\tAverage\t%15.6f ms\n",str, loop,double(min) / 1000000, double(max) / 1000000,double(med) / 1000000, double(aver) / 1000000);
}