AlarmHandler Class Reference

#include <AlarmHandler.h>

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List of all members.

Public Member Functions

 AlarmHandler (FILE *s)
virtual void handle_signal (int signum)
virtual ~AlarmHandler ()

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 <jgallagher@opendap.org>

Definition at line 42 of file AlarmHandler.h.


Constructor & Destructor Documentation

AlarmHandler::AlarmHandler ( FILE *  s  )  [inline]

Store information to be used by the handler.

Parameters:
s Write to this stream.

Definition at line 55 of file AlarmHandler.h.

virtual AlarmHandler::~AlarmHandler (  )  [inline, virtual]

Definition at line 58 of file AlarmHandler.h.


Member Function Documentation

virtual void AlarmHandler::handle_signal ( int  signum  )  [inline, virtual]

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 re-entrant system services, functions, et cetera. Generally that eliminates stdio functions but I'm using them anyway. 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 EventHandler.

Definition at line 75 of file AlarmHandler.h.

References Error::print().

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The documentation for this class was generated from the following file:
Generated on Wed Jun 27 12:57:21 2007 for libdap++ by  doxygen 1.4.7