Collaboration diagram for Fatal Implementation.:

Files
file	fatal-impl.cc
	ns3::FatalImpl::RegisterStream(), ns3::FatalImpl::UnregisterStream(), and ns3::FatalImpl::FlushStreams() implementations; see Implementation note!

file	fatal-impl.h
	ns3::FatalImpl::RegisterStream(), ns3::FatalImpl::UnregisterStream(), and ns3::FatalImpl::FlushStreams() declarations.

Namespaces
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

Function Documentation

◆ FlushStreams()

void ns3::FatalImpl::FlushStreams ( )

Flush all currently registered streams.

This function iterates through each registered stream and unregisters them. The default SIGSEGV handler is overridden when this function is being executed, and will be restored when this function returns.

If a SIGSEGV is encountered (most likely due to a bad ostream* being registered, or a registered osteam* pointing to an ostream that had already been destroyed), this function will skip the bad ostream* and continue to flush the next stream. The function will then terminate raising SIGIOT (aka SIGABRT)

DO NOT call this function until the program is ready to crash.

Definition at line 187 of file fatal-impl.cc.

References NS_LOG_FUNCTION_NOARGS.

Referenced by ns3::FatalImpl::anonymous_namespace{fatal-impl.cc}::sigHandler().

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◆ GetStreamList()

std::list< std::ostream * > * ns3::FatalImpl::anonymous_namespace{fatal-impl.cc}::GetStreamList ( )

Get the stream list, initializing it if necessary.

Returns: The stream list.

Definition at line 122 of file fatal-impl.cc.

References ns3::FatalImpl::anonymous_namespace{fatal-impl.cc}::GetStreamList(), NS_LOG_FUNCTION_NOARGS, and ns3::FatalImpl::anonymous_namespace{fatal-impl.cc}::PeekStreamList().

Referenced by ns3::FatalImpl::anonymous_namespace{fatal-impl.cc}::GetStreamList().

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◆ PeekStreamList()

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.

Returns: The address of the static pointer.

Definition at line 108 of file fatal-impl.cc.

References NS_LOG_FUNCTION_NOARGS, and ns3::FatalImpl::anonymous_namespace{fatal-impl.cc}::PeekStreamList().

Referenced by ns3::FatalImpl::anonymous_namespace{fatal-impl.cc}::GetStreamList(), and ns3::FatalImpl::anonymous_namespace{fatal-impl.cc}::PeekStreamList().

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◆ RegisterStream()

void ns3::FatalImpl::RegisterStream ( std::ostream * stream )

Register a stream to be flushed on abnormal exit.

If a std::terminate() call is encountered after the stream had been registered and before it has been unregistered, stream->flush() will be called. Users of this function should ensure the stream remains valid until it had been unregistered.

Parameters

[in] stream The stream to be flushed on abnormal exit.

Definition at line 136 of file fatal-impl.cc.

References NS_LOG_FUNCTION.

Referenced by ns3::AsciiFile::AsciiFile(), ns3::OutputStreamWrapper::OutputStreamWrapper(), and ns3::PcapFile::PcapFile().

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