fatal-impl.cc File Reference

ns3::FatalImpl::RegisterStream(), ns3::FatalImpl::UnregisterStream(), and ns3::FatalImpl::FlushStreams() implementations; see Implementation note! More...

#include "fatal-impl.h"
#include "log.h"
#include <csignal>
#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <list>

Include dependency graph for fatal-impl.cc:

Go to the source code of this file.

Namespaces
namespace	ns3
	Every class exported by the ns3 library is enclosed in the ns3 namespace.
namespace	ns3::FatalImpl
	Implementation namespace for fatal error handlers.
namespace	ns3::FatalImpl::anonymous_namespace{fatal-impl.cc}
	Unnamed namespace for fatal streams memory implementation and signal handler.

Functions
void	ns3::FatalImpl::FlushStreams ()
	Flush all currently registered streams.
std::list< std::ostream * > *	ns3::FatalImpl::anonymous_namespace{fatal-impl.cc}::GetStreamList ()
	Get the stream list, initializing it if necessary.
std::list< std::ostream * > **	ns3::FatalImpl::anonymous_namespace{fatal-impl.cc}::PeekStreamList ()
	Static variable pointing to the list of output streams to be flushed on fatal errors.
void	ns3::FatalImpl::RegisterStream (std::ostream *stream)
	Register a stream to be flushed on abnormal exit.
void	ns3::FatalImpl::anonymous_namespace{fatal-impl.cc}::sigHandler (int sig)
	Overrides normal SIGSEGV handler once the HandleTerminate function is run.
void	ns3::FatalImpl::UnregisterStream (std::ostream *stream)
	Unregister a stream for flushing on abnormal exit.

Detailed Description

ns3::FatalImpl::RegisterStream(), ns3::FatalImpl::UnregisterStream(), and ns3::FatalImpl::FlushStreams() implementations; see Implementation note!

Note

Implementation.

The singleton pattern we use here is tricky because we have to ensure:

• RegisterStream() succeeds, even if called before main() enters and before any constructor run in this file.
• UnregisterStream() succeeds, whether or not FlushStreams() has been called.
• All memory allocated with new is deleted properly before program exit.

This is why we go through all the painful hoops below.

Definition in file fatal-impl.cc.