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#ifndef CHANGE_SRC_LOGGER_H_
#define CHANGE_SRC_LOGGER_H_
#include <mutex>
#include <ext/stdio_filebuf.h>
#include <boost/filesystem.hpp>
#include <boost/process/pistream.hpp>
namespace utility {
class Logger {
public:
Logger(const int target_fd):
buffer_(target_fd, std::ios::out),
stream_(&this->buffer_) { }
void forward(boost::process::pistream&);
template <typename... Arguments>
void append(Arguments&&... args) {
std::lock_guard<std::mutex> guard(this->write_mutex_);
this->append_to_stream(std::forward<Arguments>(args)...);
}
private:
__gnu_cxx::stdio_filebuf<char> buffer_;
std::ostream stream_;
std::mutex write_mutex_;
template <typename Head>
inline void append_to_stream(Head&& head) {
this->stream_ << head << std::endl;
}
template <typename Head, typename... Tail>
inline void append_to_stream(Head&& head, Tail&&... tail) {
this->stream_ << head;
this->append_to_stream(std::forward<Tail>(tail)...);
}
};
}
#endif // CHANGE_SRC_LOGGER_H_
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