ib::info Class Reference

The class info is used to emit informational log messages. More...

#include <ut0log.h>

Inheritance diagram for ib::info:

Public Member Functions
	info ()
	Default constructor uses ER_IB_MSG_0. More...
template<class... Args>
	info (int err, Args &&...args)
	Constructor. More...
Public Member Functions inherited from ib::logger
virtual	~logger ()
	Destructor. More...
template<class... Args>
logger &	log (int err, Args &&...args)
	Format an error message. More...
template<typename T >
logger &	operator<< (const T &rhs)
std::ostream &	write (const char *buf, std::streamsize count)
	Write the given buffer to the internal string stream object. More...
std::ostream &	write (const unsigned char *buf, std::streamsize count)
	Write the given buffer to the internal string stream object. More...

Additional Inherited Members
Public Attributes inherited from ib::logger
std::ostringstream	m_oss
	For converting the message into a string. More...
int	m_err {}
	Error code in errmsg-*.txt. More...
loglevel	m_level {INFORMATION_LEVEL}
	Error logging level. More...
Protected Member Functions inherited from ib::logger
void	log_event (std::string msg)
	Uses LogEvent to report the log entry, using provided message. More...
	logger (loglevel level, int err)
	Constructor. More...
template<class... Args>
	logger (loglevel level, int err, Args &&...args)
	Constructor. More...
	logger (loglevel level)
	Constructor. More...
Static Protected Member Functions inherited from ib::logger
template<class... Args>
static std::string	msg (int err, Args &&...args)
	Format an error message. More...

Detailed Description

The class info is used to emit informational log messages.

It is to be used similar to std::cout. But the log messages will be emitted only when the dtor is called. The preferred usage of this class is to make use of unnamed temporaries as follows:

info() << "The server started successfully.";

In the above usage, the temporary object will be destroyed at the end of the statement and hence the log message will be emitted at the end of the statement. If a named object is created, then the log message will be emitted only when it goes out of scope or destroyed.

Constructor & Destructor Documentation

info() [1/2]

ib::info::info ( )

inline

Default constructor uses ER_IB_MSG_0.

info() [2/2]

template<class... Args>

ib::info::info ( int  err, Args &&...  args  )

inlineexplicit

Constructor.

Parameters

[in]	err	Error code from errmsg-*.txt.
[in]	args	Variable length argument list

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The documentation for this class was generated from the following file:

• storage/innobase/include/ut0log.h