windows-nt/Source/XPSP1/NT/admin/wmi/wbem/cppunit/samples/multicaster.cpp

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2020-09-26 03:20:57 -05:00
#include "Multicaster.h"
bool Multicaster::subscribe (MulticastObserver *observer, std::string address)
{
AddressSpace::iterator it = m_addresses.find (address);
if (it == m_addresses.end ())
{
m_addresses.insert (std::pair<std::string, Subscriptions> (address, Subscriptions ()));
it = m_addresses.find (address);
if (it == m_addresses.end ())
return false;
}
(*it).second.push_back (observer);
return true;
}
bool Multicaster::unsubscribe (MulticastObserver *observer, std::string address)
{
AddressSpace::iterator it = m_addresses.find (address);
if (it == m_addresses.end ())
return false;
unsubscribe ((*it).second, observer);
return true;
}
bool Multicaster::publish (MulticastObserver *publisher, std::string address, Value value)
{
AddressSpace::iterator it = m_addresses.find (address);
if (it == m_addresses.end ())
return false;
Subscriptions& subscriptions = (*it).second;
for (Subscriptions::iterator subit = subscriptions.begin ();
subit != subscriptions.end ();
++subit) {
MulticastObserver *subscriber = *subit;
if (subscriber != publisher)
subscriber->accept (address, value);
}
return true;
}
void Multicaster::unsubscribeFromAll (MulticastObserver *observer)
{
for (AddressSpace::iterator it = m_addresses.begin ();
it != m_addresses.end ();
++it)
unsubscribe ((*it).second, observer);
}
void Multicaster::unsubscribe (Subscriptions& subscriptions, MulticastObserver *observerToRemove)
{
for (Subscriptions::iterator it = subscriptions.begin (); it != subscriptions.end (); ) {
if (*it == observerToRemove)
it = subscriptions.erase (it);
else
it++;
}
}