SignalHandler Class Reference

#include "signalhandler.h"

Collaboration diagram for SignalHandler:

Public Member Functions
EventHandler *	registerHandler (int signum, EventHandler *eh)
void	removeHandler (int signum)

Static Public Member Functions
static SignalHandler *	instance (void)

Private Member Functions
	SignalHandler (void)

Static Private Member Functions
static void	dispatcher (int signum)

Static Private Attributes
static SignalHandler *	instance_ = NULL
static EventHandler *	signalHandlers_ [NSIG]

Detailed Description

Definition at line 70 of file signalhandler.h.

Constructor & Destructor Documentation

SignalHandler()

SignalHandler::SignalHandler ( void  )

inlineprivate

Definition at line 87 of file signalhandler.h.

{}

Referenced by instance().

Member Function Documentation

dispatcher()

void SignalHandler::dispatcher ( int  signum )

staticprivate

Definition at line 73 of file signalhandler.cpp.

                                         {
  // Perform a sanity check...
  if (SignalHandler::signalHandlers_[signum] != 0)
    // Dispatch the handler's hook method.
    SignalHandler::signalHandlers_[signum]->handleSignal(signum);
}

References EventHandler::handleSignal(), and signalHandlers_.

Referenced by registerHandler().

instance()

SignalHandler * SignalHandler::instance ( void  )

static

Definition at line 38 of file signalhandler.cpp.

                        {
  if (!instance_) instance_ = new SignalHandler;
 
  // assert(instance_ != NULL);
  return instance_;
}

References instance_, and SignalHandler().

registerHandler()

EventHandler * SignalHandler::registerHandler	(	int	signum,
		EventHandler *	eh
	)

Definition at line 47 of file signalhandler.cpp.

                                                           {
  // Copy the <old_eh> from the <signum> slot in
  // the <signalHandlers_> table.
  EventHandler *old_eh = signalHandlers_[signum];
 
  // Store <eh> into the <signum> slot in the
  // <signalHandlers_> table.
  SignalHandler::signalHandlers_[signum] = eh;
 
  // Register the <dispatcher> to handle this
  // <signum>.
  struct sigaction sa;
  sa.sa_handler = SignalHandler::dispatcher;
  sigemptyset(&sa.sa_mask);
  sa.sa_flags = 0;
  sigaction(signum, &sa, 0);
 
  return old_eh;
}

References dispatcher(), and signalHandlers_.

removeHandler()

void SignalHandler::removeHandler

(

int

signum

)

Definition at line 67 of file signalhandler.cpp.

                                            {
  // EventHandler *old_eh = signalHandlers_[signum];
  signalHandlers_[signum] = static_cast<EventHandler *>(0);
}

References signalHandlers_.

Member Data Documentation

instance_

SignalHandler * SignalHandler::instance_ = NULL

staticprivate

Definition at line 90 of file signalhandler.h.

Referenced by instance().

signalHandlers_

EventHandler * SignalHandler::signalHandlers_

staticprivate

Definition at line 100 of file signalhandler.h.

Referenced by dispatcher(), registerHandler(), and removeHandler().

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

• signalhandler.h
• signalhandler.cpp