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utils::logging::ostream_listener Struct Reference

a listener writing on a ostream. More...

#include <log.h>

Inheritance diagram for utils::logging::ostream_listener::

List of all members.

Public Methods
	ostream_listener (ostream &o=cerr)
	~ostream_listener ()
bool	onMsg (const msg &msg)
	handles a individual message. More...
Public Attributes
ostream &	out

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Detailed Description

a listener writing on a ostream.

This class provides an implementation that writes the message onto an ostream.

Note that using this class is just a quick and dirty solution. It is not thread-safe in that if you use it with std::cerr or std::cout there is no way to synchronize accesses with other threads. On the other hand you cannot use it like these:

 int main()
 {
     ...
     // will crash!! after destruction of out
     ofstream out(filename);
     new ostream_listener(out);
     ...
     // will never close the outfile.
     new ostream_listener(new ofstream(filename));
     ...
 }

If you want to log into a file you should use a file_listener instead.

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Constructor & Destructor Documentation

utils::logging::ostream_listener::ostream_listener (  ostream &    o = cerr )

utils::logging::ostream_listener::~ostream_listener (    )

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Member Function Documentation

bool utils::logging::ostream_listener::onMsg (  const msg &    msg )  [virtual]

handles a individual message. If this method returns false the message won't be handled any longer. As listener base objects are called in the order of creation you might use this to create simple message filters. Reimplemented from utils::logging::listener.

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Member Data Documentation

ostream& utils::logging::ostream_listener::out

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

• log.h

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