void CSubject::PostChanges( System::Changes::BitMask changedBits )
{
if ( !m_observerList.empty() )
{
typedef std::pair<IObserver*, u32> PostData;
PostData* aPostData = NULL;
u32 nNotificationsToPost = 0;
// Double check to avoid unnecessary lock acquisition
{
SpinWait::Lock lock(m_observerListMutex);
aPostData = (PostData*)alloca( m_observerList.size() * sizeof(PostData) );
ObserverList::iterator it = m_observerList.begin();
for ( ; it != m_observerList.end(); ++it )
{
u32 changedBitsOfInterest = GetBitsToPost( *it, changedBits );
if ( changedBitsOfInterest )
{
aPostData[nNotificationsToPost] = std::make_pair(it->m_pObserver, changedBitsOfInterest);
++nNotificationsToPost;
}
}
}
// Posting is done outside of the lock
for ( u32 i = 0; i < nNotificationsToPost; ++i )
{
aPostData[i].first->ChangeOccurred( this, aPostData[i].second );
}
}
} // CSubject::PostChanges
virtual void PostChanges( System::Changes::BitMask changedBits )
{
if ( !m_observerList.empty() )
{
typedef std::pair<IObserver*, u32> PostData;
PostData* aPostData = NULL;
u32 nNotificationsToPost = 0;
// Double check to avoid unnecessary lock acquisition
{
std::lock_guard<std::mutex> lock(m_observerListMutex);
aPostData = (PostData*)alloca( m_observerList.size() * sizeof(PostData) );
for ( auto& it : m_observerList)
{
std::uint32_t changedBitsOfInterest = GetBitsToPost( it, changedBits );
if ( changedBitsOfInterest )
{
aPostData[nNotificationsToPost] = std::make_pair(it->m_pObserver, changedBitsOfInterest);
++nNotificationsToPost;
}
}
}
// Posting is done outside of the lock
for ( u32 i = 0; i < nNotificationsToPost; ++i )
{
aPostData[i].first->ChangeOccurred( this, aPostData[i].second );
}
}
} // CSubject::PostChanges
///////////////////////////////////////////////////////////////////////////////
// PostChanges - Post a change to all observers of this subject
void CSubject::PostChanges( System::Changes::BitMask changedBits )
{
#if SUPPORT_CONCURRENT_ATTACH_DETACH_TO_SUBJECTS
SpinWait::Lock lock(m_observerListMutex);
#endif
ObserverList::iterator it = m_observerList.begin();
for ( ; it != m_observerList.end(); ++it )
{
u32 changedBitsOfInterest = GetBitsToPost( *it, changedBits );
if ( changedBitsOfInterest )
{
it->m_pObserver->ChangeOccurred( this, changedBitsOfInterest );
}
}
}
// PostChanges - Post a change to all observers of this subject
virtual void PostChanges( System::Changes::BitMask changedBits )
{
#if SUPPORT_CONCURRENT_ATTACH_DETACH_TO_SUBJECTS
std::lock_guard<std::mutex> lock(m_observerListMutex);
#endif
ObserverList::iterator it = m_observerList.begin();
for ( ; it != m_observerList.end(); ++it )
{
std::uint32_t changedBitsOfInterest = GetBitsToPost( *it, changedBits );
if ( changedBitsOfInterest )
{
it->m_pObserver->ChangeOccurred( this, changedBitsOfInterest );
}
}
}
