spdlog_sample.cpp
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#include "spdlog/spdlogwarp.hh"
#include <thread>
#include <iostream>
#include "spdlog/fmt/fmt.h"
#include "spdlog/fmt/bin_to_hex.h"
#define SLP_MS 1000
void thd()
{
// trace日志会缓存在内存
while (1) {
auto tr = SLog::get_trace("trace1");
tr->trace("1");
std::this_thread::sleep_for(std::chrono::milliseconds(SLP_MS));
tr->trace("2");
std::this_thread::sleep_for(std::chrono::milliseconds(SLP_MS));
tr->trace("3");
std::this_thread::sleep_for(std::chrono::milliseconds(SLP_MS));
tr->trace("4");
std::this_thread::sleep_for(std::chrono::milliseconds(SLP_MS));
tr->trace("5");
std::this_thread::sleep_for(std::chrono::milliseconds(SLP_MS));
tr->trace("6");
std::this_thread::sleep_for(std::chrono::milliseconds(SLP_MS));
tr->trace("7");
std::this_thread::sleep_for(std::chrono::milliseconds(SLP_MS));
}
}
void thd2()
{
while (1) {
auto tr = SLog::get("error_info");
tr->error("th2 1");
std::this_thread::sleep_for(std::chrono::milliseconds(SLP_MS));
tr->error("th2 2");
std::this_thread::sleep_for(std::chrono::milliseconds(SLP_MS));
tr->info("th2 1");
std::this_thread::sleep_for(std::chrono::milliseconds(SLP_MS));
tr->info("th2 2");
std::this_thread::sleep_for(std::chrono::milliseconds(SLP_MS));
}
}
void thd3()
{
while (1) {
SLog::get("debuglog")->debug("th3 1");
std::this_thread::sleep_for(std::chrono::milliseconds(SLP_MS));
SLog::get("debuglog")->debug("th3 2");
std::this_thread::sleep_for(std::chrono::milliseconds(SLP_MS));
SLog::get("debuglog")->debug("th3 3");
std::this_thread::sleep_for(std::chrono::milliseconds(SLP_MS));
}
}
void thd4()
{
while (1) {
SLog::global()->info("th4 1");
std::this_thread::sleep_for(std::chrono::milliseconds(SLP_MS));
SLog::global()->debug("th4 2");
std::this_thread::sleep_for(std::chrono::milliseconds(SLP_MS));
SLog::global()->error("th4 3");
std::this_thread::sleep_for(std::chrono::milliseconds(SLP_MS));
}
}
int main()
{
//初始化前确认是否已经初始化过了。避免主程序已经初始化过了。子模块建议使用专属日志
if (!SLog::has_inited()) {
SLog::init("./", "sample");
}
// 公共日志
SLog::global()->info("I'm global {} {}", 1, "string");
// 此函数是为了方便替换原有代码中的printf。会输出日志到[appname].log中
cslog("I'm global log too %d %s", 1, "string");
// 专属日志，输出到subject.log
SLog::get("subject")->error("I'm {}", "subject");
auto sublog = SLog::get("subject");
sublog->error("I'm {}", "subject");
// 与sublog->info相比，写出的日志带行号文件名
SPDLOG_LOGGER_INFO(sublog, "with line filename");
SPDLOG_LOGGER_DEBUG(sublog, "with line filename");
// 专属日志，输出到./2222/subject.log
SLog::get("./2222/subject")->error("I'm {}", "2222");
// 额外赠送功能，string的format，fmtlib库
std::string fmtstr;
fmt::format(fmtstr, "format {} {} {}", 2, 2.9, "string");
std::cout << fmtstr;
// 打印二进制数据方法
unsigned char buffer[1024];
sublog->info("binary: {}", spdlog::to_hex(std::begin(buffer), std::begin(buffer)+1024));
//反初始化
SLog::cleanup();
//创建多个线程同时写日志，SLP_MS改小增加日志量，测试性能
auto th = std::thread(thd);
th.detach();
auto th2 = std::thread(thd2);
th2.detach();
auto th3 = std::thread(thd3);
th3.detach();
auto th4 = std::thread(thd4);
th4.detach();
SLog::global()->info("输入dump回车，将trace日志打印到文件中，输入debug、info、error动态更改日志等级");
while (1) {
std::string input;
std::cin >> input;
if (input == "dump") {
SLog::dump_trace();
} else if(input == "info") {
//动态变更日志等级至info
SLog::change_level(spdlog::level::info);
SLog::global()->critical("input:info");
} else if(input == "debug") {
//动态变更日志等级至debug
SLog::change_level(spdlog::level::debug);
SLog::global()->critical("input:debug");
} else if(input == "error") {
//动态变更日志等级至error
SLog::change_level(spdlog::level::err);
SLog::global()->critical("input:error");
}
}
}