{

log_prefix_ = util::string::Strip(log_prefix);

log_path_ = util::string::Strip(log_path);

//! 如果最后一个字符是/，就弹出

if (log_path_.at(log_path_.length() - 1) == '/')

log_path_.pop_back();

if (log_prefix_.empty() || log_path_.empty())

return false;

AsyncChannel::Config cfg;

cfg.buff_size = 1024;

cfg.buff_min_num = 2;

cfg.buff_max_num = 20;

cfg.interval = 100;

bool ok = AsyncChannel::initialize(cfg);

if (ok) {

pid_ = ::getpid();

return true;

}

return false;

{

AsyncChannel::cleanup();

pid_ = 0;

{

if (pid_ == 0 || !checkAndCreateLogFile())

return;

ofs_ << log_text << endl << flush;

if (ofs_.tellp() >= file_max_size_)

ofs_.close();

{

if (ofs_.is_open())

return true;

//!检查并创建路径

if (!util::fs::MakeDirectory(log_path_, false)) {

cerr << "Err: create director " << log_path_ << " fail." << endl;

return false;

}

char timestamp[16]; //! 固定长度16B，"20220414_071023"

{

time_t ts_sec = time(nullptr);

struct tm tm;

localtime_r(&ts_sec, &tm);

strftime(timestamp, sizeof(timestamp), "%Y%m%d_%H%M%S", &tm);

}

std::string filename;

int postfix = 0;

do {

ostringstream filename_oss;

filename_oss << log_path_ << '/' << log_prefix_ << '_' << pid_ << '.' << timestamp << ".log";

if (postfix != 0)

filename_oss << "." << postfix;

filename = filename_oss.str();

++postfix;

} while (util::fs::IsFileExist(filename)); //! 避免在同一秒多次创建日志文件，都指向同一日志名

ofs_.open(filename, ofstream::out | ofstream::app);

return ofs_.is_open();