Go4Log
Class TGo4Log

class TGo4Log

derived from TObject

This class handles all logging messages inside Go4.
Should replace the previous Trace mechanism.

Author:

J. Adamczewski

Since: 17-jun-2003

private static Bool_t fgbAutoMode

User boolean to write log on demand or not

private static Bool_t fgbLogfileEnabled

General switch on/off log file output

private static Bool_t fgbOutputEnabled

General switch on/off log output

public const static const Text_t[] fgcDEBUG

System debug message indicator

public const static const Text_t[] fgcDEFAULTLOG

Name of default logfile

public const static const Text_t[] fgcERR

Error message indicator

public const static const Text_t[] fgcINFO

Info message indicator

public const static const Text_t[] fgcLEFT

Prompt character left side

private static Text_t[1024] fgcMessagetext

Keeps latest message with all format indicators

public const static const Text_t[] fgcRIGHT

Prompt character right side

public const static const Text_t[] fgcWARN

Warning message indicator

private static Int_t fgiIgnoreLevel

all Messages with lower level are suppressed

public const static const UInt_t fguMESLEN

Maximum message length allowd

private static TGo4Log* fgxInstance

private static std::ofstream* fgxLogfile

optional logfile to store messages with time

private static TString fgxLogName

Name of last logfile set

private static TMutex* fgxMutex

we use own mutex to protect the logging instance

private TGo4Log()

public virtual synchronized ~TGo4Log()

public static void AutoEnable(Bool_t on)

set boolean for user action

public static void CloseLogfile()

Close logfile if existing

public static void Debug(const Text_t* text, ... )

User shortcut for message with prio 0

public static void Error(const Text_t* text, ... )

User shortcut for message with prio 3

public static Int_t GetIgnoreLevel()

Get threshold for output

public const static const Text_t* GetLogname()

get name of last opened logfile

public static void Info(const Text_t* text, ... )

User shortcut for message with prio 1

public static TGo4Log* Instance()

public static Bool_t IsAutoEnabled()

get current user boolean

public static Bool_t IsLogfileEnabled()

get current logfile state

public static Bool_t IsOutputEnabled()

get current output state

public static void LogfileEnable(Bool_t on)

switch writing to logfile on or off

public const static const Text_t* Message(Int_t prio, const Text_t* text, ... )

Display a message. Argument pri defines message priority:
0: debug / trace output
1: info message
2: warning message
>=3: error message
Method returns formatted message string as printed out for further use

public static void OpenLogfile(const Text_t* name, const Text_t* headercomment, Bool_t appendmode)

Open file of name for logmessage output. If name=0, use
defaultname containing pid. Optionally, headercomment text
is set at beginning of file. If appendmode is true, existing
file of same name is reused and extended by new messages.

public static void OutputEnable(Bool_t on)

switch output on or off

public static void set_trace_level(int )

dummy for compatibility

public static void SetIgnoreLevel(Int_t level)

Define threshold for output

public static void SetTracePriority(int )

dummy for compatibility

public static void StartTracing()

For backward compatibility

public static void StopTracing()

For backward compatibility

public static void Warn(const Text_t* text, ... )

User shortcut for message with prio 2

public static void WriteLogfile(const Text_t* text, Bool_t withtime)

Write text to current logfile if this is open. Prefix current
datime in each line if "withtime" is true

Association Links

to Class TGo4Log

to Class TMutex

we use own mutex to protect the logging instance