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add chrono misc

master
zcy 2023-05-26 16:31:26 +08:00
parent e7a1982170
commit 71185ab318
4 changed files with 278 additions and 0 deletions
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105
general/src/function/glotime.cpp Normal file
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#include <stdlib.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <functional>
#include <thread>
#include <iostream>
#include <Windows.h>
#include <chrono>
#include <string>
#include <sstream>
#include <iosfwd>
#include <iomanip>
using namespace std;
constexpr int64_t SEC = 1000000;
constexpr int64_t MIN = SEC * 60;
constexpr int64_t HOUR = MIN * 60;
constexpr int64_t DAY = HOUR * 24;
// 返回当前时间作为 格林威治(GMT)时间 距离 GMT时间 1970-1-1 00:00:00 的微秒数
int64_t get_time(){
chrono::system_clock clock;
return chrono::duration_cast<chrono::microseconds>(
clock.now().time_since_epoch()).count();
}
int64_t get_time_us_greenwich()
{
chrono::system_clock clock;
return chrono::duration_cast<chrono::microseconds>(
clock.now().time_since_epoch()).count();
}
// 返回当前时间作为 本地（北京）时间 距离 GMT时间 1970-1-1 00:00:00 的微秒数，等于get_gmtime_us加8小时
int64_t get_localtime_us()
{
return get_time_us_greenwich() + HOUR * 8;
}
// 格林威治时间的微秒数格式化成本地时间字符串
string gmtime2localstr(int64_t time_us, const string& fmt="%Y-%m-%d %H:%M:%S")
{
stringstream ss;
time_t t = time_us / SEC;
auto tm = std::localtime(&t);
ss << std::put_time(tm, fmt.c_str());
return ss.str();
}
// 本地时间字符串解析成格林威治时间的微秒数
int64_t localstr2gmtime(const std::string& s, const std::string& fmt="%Y-%m-%d %H:%M:%S")
{
stringstream ss;
ss << s;
struct tm tm;
ss >> std::get_time(&tm, fmt.c_str());
return (int64_t)mktime(&tm) * SEC;
}
// 字符串转微秒数，不考虑时区
std::string time2strgm(int64_t time_us, const std::string& fmt="%Y-%m-%d %H:%M:%S")
{
stringstream ss;
time_t t = time_us / SEC;
auto tm = std::gmtime(&t);
ss << std::put_time(tm, fmt.c_str());
return ss.str();
}
std::string time2strlocal(int64_t time_us,const std::string &fmt="%Y-%m-%d %H:%M:%S"){
stringstream ss;
time_t t = time_us / SEC;
auto tm = std::localtime(&t);
ss << std::put_time(tm, fmt.c_str());
return ss.str();
}
// 微秒数转字符串，不考虑时区
int64_t str2time(const std::string& s, const std::string& fmt="%Y-%m-%d %H:%M:%S")
{
stringstream ss;
ss << s;
struct tm tm;
ss >> std::get_time(&tm, fmt.c_str());
return (int64_t)mktime(&tm) * SEC + HOUR * 8; // 这里 + 8 HOURs是因为mktime内部考虑了时区，我期望有一个gmmktime函数，但是标准库似乎并没有
}
void time_add(){
using std::chrono::system_clock;
std::chrono::duration<int,std::ratio<60*60*24> > one_day (1);
system_clock::time_point today = system_clock::now();
system_clock::time_point tomorrow = today + one_day;
std::time_t tt;
tt = system_clock::to_time_t ( today );
std::cout << "today is: " << ctime(&tt);
tt = system_clock::to_time_t ( tomorrow );
std::cout << "tomorrow will be: " << ctime(&tt);
}

41
general/src/function/glotime.h Normal file
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#include <stdlib.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <functional>
#include <thread>
#include <iostream>
#include <Windows.h>
#include <chrono>
#include <string>
#include <sstream>
#include <iosfwd>
#include <iomanip>
using namespace std;
constexpr int64_t SEC = 1000000;
constexpr int64_t MIN = SEC * 60;
constexpr int64_t HOUR = MIN * 60;
constexpr int64_t DAY = HOUR * 24;
// 返回当前时间作为 格林威治(GMT)时间 距离 GMT时间 1970-1-1 00:00:00 的微秒数
int64_t get_time();
int64_t get_time_us_greenwich();
// 返回当前时间作为 本地（北京）时间 距离 GMT时间 1970-1-1 00:00:00 的微秒数，等于get_gmtime_us加8小时
int64_t get_localtime_us();
// 格林威治时间的微秒数格式化成本地时间字符串
string gmtime2localstr(int64_t time_us, const string& fmt="%Y-%m-%d %H:%M:%S");
// 本地时间字符串解析成格林威治时间的微秒数
int64_t localstr2gmtime(const std::string& s, const std::string& fmt="%Y-%m-%d %H:%M:%S");
// 字符串转微秒数，不考虑时区
std::string time2strgm(int64_t time_us, const std::string& fmt="%Y-%m-%d %H:%M:%S");
std::string time2strlocal(int64_t time_us,const std::string &fmt="%Y-%m-%d %H:%M:%S");
// 微秒数转字符串，不考虑时区
int64_t str2time(const std::string& s, const std::string& fmt="%Y-%m-%d %H:%M:%S");
void time_add();

13
test/src/chrono/CMakeLists.txt Normal file
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cmake_minimum_required(VERSION 3.12)
project(cpp11)
add_definitions(-std=c++11)
message("current dir" ${CMAKE_CURRENT_SOURCE_DIR})
# set(CMAKE_CXX_FLAGS "-fno-elide-constructors")
message(info ${SOURCE})
link_directories("./third/lib")
add_executable(chrono_test test.cpp )
include_directories("./third/include")

119
test/src/chrono/test.cpp Normal file
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#include <stdlib.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <functional>
#include <thread>
#include <iostream>
#include <Windows.h>
#include <chrono>
#include <string>
#include <sstream>
#include <iosfwd>
#include <iomanip>
using namespace std;
constexpr int64_t SEC = 1000000;
constexpr int64_t MIN = SEC * 60;
constexpr int64_t HOUR = MIN * 60;
constexpr int64_t DAY = HOUR * 24;
// 返回当前时间作为 格林威治(GMT)时间 距离 GMT时间 1970-1-1 00:00:00 的微秒数
int64_t get_time(){
chrono::system_clock clock;
return chrono::duration_cast<chrono::microseconds>(
clock.now().time_since_epoch()).count();
}
int64_t get_time_us_greenwich()
{
chrono::system_clock clock;
return chrono::duration_cast<chrono::microseconds>(
clock.now().time_since_epoch()).count();
}
// 返回当前时间作为 本地（北京）时间 距离 GMT时间 1970-1-1 00:00:00 的微秒数，等于get_gmtime_us加8小时
int64_t get_localtime_us()
{
return get_time_us_greenwich() + HOUR * 8;
}
// 格林威治时间的微秒数格式化成本地时间字符串
string gmtime2localstr(int64_t time_us, const string& fmt="%Y-%m-%d %H:%M:%S")
{
stringstream ss;
time_t t = time_us / SEC;
auto tm = std::localtime(&t);
ss << std::put_time(tm, fmt.c_str());
return ss.str();
}
// 本地时间字符串解析成格林威治时间的微秒数
int64_t localstr2gmtime(const std::string& s, const std::string& fmt="%Y-%m-%d %H:%M:%S")
{
stringstream ss;
ss << s;
struct tm tm;
ss >> std::get_time(&tm, fmt.c_str());
return (int64_t)mktime(&tm) * SEC;
}
// 字符串转微秒数，不考虑时区
std::string time2strgm(int64_t time_us, const std::string& fmt="%Y-%m-%d %H:%M:%S")
{
stringstream ss;
time_t t = time_us / SEC;
auto tm = std::gmtime(&t);
ss << std::put_time(tm, fmt.c_str());
return ss.str();
}
std::string time2strlocal(int64_t time_us,const std::string &fmt="%Y-%m-%d %H:%M:%S"){
stringstream ss;
time_t t = time_us / SEC;
auto tm = std::localtime(&t);
ss << std::put_time(tm, fmt.c_str());
return ss.str();
}
// 微秒数转字符串，不考虑时区
int64_t str2time(const std::string& s, const std::string& fmt="%Y-%m-%d %H:%M:%S")
{
stringstream ss;
ss << s;
struct tm tm;
ss >> std::get_time(&tm, fmt.c_str());
return (int64_t)mktime(&tm) * SEC + HOUR * 8; // 这里 + 8 HOURs是因为mktime内部考虑了时区，我期望有一个gmmktime函数，但是标准库似乎并没有
}
void time_add(){
using std::chrono::system_clock;
std::chrono::duration<int,std::ratio<60*60*24> > one_day (1);
system_clock::time_point today = system_clock::now();
system_clock::time_point tomorrow = today + one_day;
std::time_t tt;
tt = system_clock::to_time_t ( today );
std::cout << "today is: " << ctime(&tt);
tt = system_clock::to_time_t ( tomorrow );
std::cout << "tomorrow will be: " << ctime(&tt);
}
void time_format(){
}
int main()
{
std::cout<<"greenwill time: "<<get_time_us_greenwich()<<std::endl;
std::cout<<"time format greenwich is "<<time2strgm(get_time_us_greenwich())<<std::endl;
std::cout<<"time format is "<<time2strlocal(get_time_us_greenwich())<<std::endl;
return 0;
}