foreword

glogThe function is very powerful but also very simple. It is powerful because it can logmake a process colorful, can output exceptions, and can terminate the program; single means that its function is to output logs for testers and users to see. No matter how good it is, it only realizes the function of logging. If you want to standardize your log records, you can continue to look down. If you think the format of the log records doesn’t matter, then I suggest you close the web page and don’t waste time.

1. Installation

download

Open source project, not confidential, download is still very convenient, you can download it from the link provided below, the latest version has 0.4not been updated for a while, but it does not matter, after all, it is quite perfect:
download link: google::glog

compile

Nextwin , just use CMake-guiit, because it is a relatively small library with few dependencies, so it is also very simple, as shown in the figure below, just need to gflag, gtestremove it. Click Configure
insert image description here
first , if it does not appear , click Generate again , if there is no problem, just open VS to compile, after the compilation is completed, the main files are as follows (testing below , you need to adjust the path of some files according to the following location ):errorwin

-glog:
	-include:
		-logging.h
		-glog:
			-export.h
			-log_severity.h
			-raw_logging.h
			-stl_logging.h
			-vlog_is_on.h
	-glog.dll
	-glog.lib

Two, use

configuration

Since it is a general open source library, it can be includedirectly added to VSthe default path:
···
D:\Program Files (x86)\Microsoft Visual Studio 19\VC\Tools\MSVC\14.28.29333\include
···

minimal routine

Description: Can achieve output to a specific folder

#include <glog/include/logging.h>
#include <iostream>
#include <string>
using namespace std;
int main(int argc, char** argv)
{
	google::InitGoogleLogging(argv[0]);
	google::SetLogDestination(google::GLOG_INFO, "./log/"); // 设置日志路径
	FLAGS_stop_logging_if_full_disk = true;
	FLAGS_colorlogtostderr = true; 
	FLAGS_max_log_size = 8;

	int num = 10;
	LOG(INFO) << "FOUND = " << num;
	LOG(WARNING) << "WARNIGN";
	google::ShutdownGoogleLogging();
	return 0;
}

Concern 1 : Init*It Shutdownmust be paired, otherwise it may cause memory leaks;
Concern 2 : Severity level, which can be divided into:INFO, WARNING, ERROR, FATAL

Programming tool learning articles --glog

google::glog tutorial