libdap::AlarmHandler Class Reference

#include <AlarmHandler.h>

Inheritance diagram for libdap::AlarmHandler:

Public Member Functions
	AlarmHandler (FILE *s)
	AlarmHandler (ostream &)
virtual void	handle_signal (int signum)

Detailed Description

Handle the time out alarm. When an OPeNDAP server runs until the time out alarm is triggered, this class provides the concrete implementation of EventHandler::handle_signal().

See also

EventHandler

SignalHandler

Author

James Gallagher jgall.nosp@m.aghe.nosp@m.r@ope.nosp@m.ndap.nosp@m..org

Definition at line 45 of file AlarmHandler.h.

Constructor & Destructor Documentation

AlarmHandler()

libdap::AlarmHandler::AlarmHandler ( ostream &  )

inlineexplicit

Store information to be used by the handler.

Parameters

out	Write to this stream.

Deprecated:

The stream param is ignored. Use the default constructor instead.

Definition at line 62 of file AlarmHandler.h.

Member Function Documentation

handle_signal()

virtual void libdap::AlarmHandler::handle_signal ( int  signum )

inlinevirtual

Handle an alarm signal. When one of our servers gets an alarm, that means it has hit its time out. We need to dump two CRLF pairs down the stream and then send an Error object explaining that a timeout has been reached.

Because this is a signal handler, it should call only reentrant system services, functions, et cetera. This handler never returns to the code that was running when the alarm signal was raised.

Parameters

signum

We know it is SIGALRM; here as a check

Returns

Never returns; calls exit after sending the Error object.

Implements libdap::EventHandler.

Definition at line 82 of file AlarmHandler.h.

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

• AlarmHandler.h