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logging.h
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logging.h
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#ifndef HOROVOD_LOGGING_H
#define HOROVOD_LOGGING_H
#include <sstream>
#include <string>
namespace horovod {
namespace common {
enum class LogLevel {
TRACE, DEBUG, INFO, WARNING, ERROR, FATAL
};
#define LOG_LEVELS "TDIWEF"
class LogMessage : public std::basic_ostringstream<char> {
public:
LogMessage(const char* fname, int line, LogLevel severity);
~LogMessage();
protected:
void GenerateLogMessage(bool log_time);
private:
const char* fname_;
int line_;
LogLevel severity_;
};
// LogMessageFatal ensures the process will exit in failure after
// logging this message.
class LogMessageFatal : public LogMessage {
public:
LogMessageFatal(const char* file, int line);
~LogMessageFatal();
};
#define _HVD_LOG_TRACE \
LogMessage(__FILE__, __LINE__, LogLevel::TRACE)
#define _HVD_LOG_DEBUG \
LogMessage(__FILE__, __LINE__, LogLevel::DEBUG)
#define _HVD_LOG_INFO \
LogMessage(__FILE__, __LINE__, LogLevel::INFO)
#define _HVD_LOG_WARNING \
LogMessage(__FILE__, __LINE__, LogLevel::WARNING)
#define _HVD_LOG_ERROR \
LogMessage(__FILE__, __LINE__, LogLevel::ERROR)
#define _HVD_LOG_FATAL \
LogMessageFatal(__FILE__, __LINE__)
#define _LOG(severity) _HVD_LOG_##severity
#define _LOG_RANK(severity, rank) _HVD_LOG_##severity << "[" << rank << "]: "
#define GET_LOG(_1, _2, NAME, ...) NAME
#define LOG(...) GET_LOG(__VA_ARGS__, _LOG_RANK, _LOG)(__VA_ARGS__)
LogLevel MinLogLevelFromEnv();
bool LogTimeFromEnv();
}
}
#endif // HOROVOD_LOGGING_H