/**
* Cancels sharing (if any) by making an independent copy of data.
* This operation also resets this object's peer to NULL.
*
* @note Locks this object for writing, together with the peer object
* represented by @a aThat (locked for reading).
*/
void USBDeviceFilter::unshare()
{
/* sanity */
AutoCaller autoCaller(this);
AssertComRCReturnVoid(autoCaller.rc());
/* sanity too */
AutoCaller peerCaller(mPeer);
AssertComRCReturnVoid(peerCaller.rc());
/* peer is not modified, lock it for reading (mPeer is "master" so locked
* first) */
AutoReadLock rl(mPeer COMMA_LOCKVAL_SRC_POS);
AutoWriteLock wl(this COMMA_LOCKVAL_SRC_POS);
if (bd.isShared())
{
if (!bd.isBackedUp())
bd.backup();
bd.commit();
}
unconst(mPeer) = NULL;
}
void NATEngine::commit()
{
AutoCaller autoCaller(this);
AssertComRCReturnVoid(autoCaller.rc());
/* sanity too */
AutoCaller peerCaller(mPeer);
AssertComRCReturnVoid(peerCaller.rc());
/* lock both for writing since we modify both (mPeer is "master" so locked
* first) */
AutoMultiWriteLock2 alock(mPeer, this COMMA_LOCKVAL_SRC_POS);
if (m_fModified)
{
mData.commit();
if (mPeer)
{
mPeer->mData.attach(mData);
mPeer->mNATRules.clear();
NATRuleMap::iterator it;
for (it = mNATRules.begin(); it != mNATRules.end(); ++it)
{
mPeer->mNATRules.insert(std::make_pair(it->first, it->second));
}
}
}
m_fModified = false;
}
/**
* @note Locks this object for writing, together with the peer object (also
* for writing) if there is one.
*/
void USBController::i_commit()
{
/* sanity */
AutoCaller autoCaller(this);
AssertComRCReturnVoid(autoCaller.rc());
/* sanity too */
AutoCaller peerCaller(m->pPeer);
AssertComRCReturnVoid(peerCaller.rc());
/* lock both for writing since we modify both (mPeer is "master" so locked
* first) */
AutoMultiWriteLock2 alock(m->pPeer, this COMMA_LOCKVAL_SRC_POS);
if (m->bd.isBackedUp())
{
m->bd.commit();
if (m->pPeer)
{
/* attach new data to the peer and reshare it */
AutoWriteLock peerlock(m->pPeer COMMA_LOCKVAL_SRC_POS);
m->pPeer->m->bd.attach(m->bd);
}
}
}
/**
* Initializes the USB controller object given another USB controller object
* (a kind of copy constructor). This object shares data with
* the object passed as an argument.
*
* @returns COM result indicator.
* @param aParent Pointer to our parent object.
* @param aPeer The object to share.
* @param aReshare
* When false, the original object will remain a data owner.
* Otherwise, data ownership will be transferred from the original
* object to this one.
*
* @note This object must be destroyed before the original object
* it shares data with is destroyed.
*
* @note Locks @a aThat object for writing if @a aReshare is @c true, or for
* reading if @a aReshare is false.
*/
HRESULT USBController::init(Machine *aParent, USBController *aPeer,
bool fReshare /* = false */)
{
LogFlowThisFunc(("aParent=%p, aPeer=%p, fReshare=%RTbool\n",
aParent, aPeer, fReshare));
ComAssertRet(aParent && aPeer, E_INVALIDARG);
/* Enclose the state transition NotReady->InInit->Ready */
AutoInitSpan autoInitSpan(this);
AssertReturn(autoInitSpan.isOk(), E_FAIL);
m = new Data(aParent);
/* sanity */
AutoCaller peerCaller(aPeer);
AssertComRCReturnRC(peerCaller.rc());
if (fReshare)
{
AutoWriteLock peerLock(aPeer COMMA_LOCKVAL_SRC_POS);
unconst(aPeer->m->pPeer) = this;
m->bd.attach(aPeer->m->bd);
}
else
{
unconst(m->pPeer) = aPeer;
AutoReadLock peerLock(aPeer COMMA_LOCKVAL_SRC_POS);
m->bd.share(aPeer->m->bd);
}
/* Confirm a successful initialization */
autoInitSpan.setSucceeded();
return S_OK;
}
/**
* @note Locks this object for writing, together with the peer object (also
* for writing) if there is one.
*/
void NetworkAdapter::commit()
{
/* sanity */
AutoCaller autoCaller(this);
AssertComRCReturnVoid(autoCaller.rc());
/* sanity too */
AutoCaller peerCaller(mPeer);
AssertComRCReturnVoid(peerCaller.rc());
/* lock both for writing since we modify both (mPeer is "master" so locked
* first) */
AutoMultiWriteLock2 alock(mPeer, this COMMA_LOCKVAL_SRC_POS);
if (mData.isBackedUp())
{
mData.commit();
if (mPeer)
{
/* attach new data to the peer and reshare it */
mPeer->mData.attach(mData);
}
}
}
/**
* @note Locks this object for writing, together with the peer object (also
* for writing) if there is one.
*/
void USBController::commit()
{
/* sanity */
AutoCaller autoCaller(this);
AssertComRCReturnVoid (autoCaller.rc());
/* sanity too */
AutoCaller peerCaller(m->pPeer);
AssertComRCReturnVoid (peerCaller.rc());
/* lock both for writing since we modify both (mPeer is "master" so locked
* first) */
AutoMultiWriteLock2 alock(m->pPeer, this COMMA_LOCKVAL_SRC_POS);
if (m->bd.isBackedUp())
{
m->bd.commit();
if (m->pPeer)
{
/* attach new data to the peer and reshare it */
AutoWriteLock peerlock(m->pPeer COMMA_LOCKVAL_SRC_POS);
m->pPeer->m->bd.attach(m->bd);
}
}
#ifdef VBOX_WITH_USB
bool commitFilters = false;
if (m->llDeviceFilters.isBackedUp())
{
m->llDeviceFilters.commit();
/* apply changes to peer */
if (m->pPeer)
{
AutoWriteLock peerlock(m->pPeer COMMA_LOCKVAL_SRC_POS);
/* commit all changes to new filters (this will reshare data with
* peers for those who have peers) */
DeviceFilterList *newList = new DeviceFilterList();
DeviceFilterList::const_iterator it = m->llDeviceFilters->begin();
while (it != m->llDeviceFilters->end())
{
(*it)->commit();
/* look if this filter has a peer filter */
ComObjPtr<USBDeviceFilter> peer = (*it)->peer();
if (!peer)
{
/* no peer means the filter is a newly created one;
* create a peer owning data this filter share it with */
peer.createObject();
peer->init(m->pPeer, *it, true /* aReshare */);
}
else
{
/* remove peer from the old list */
m->pPeer->m->llDeviceFilters->remove(peer);
}
/* and add it to the new list */
newList->push_back (peer);
++ it;
}
/* uninit old peer's filters that are left */
it = m->pPeer->m->llDeviceFilters->begin();
while (it != m->pPeer->m->llDeviceFilters->end())
{
(*it)->uninit();
++ it;
}
/* attach new list of filters to our peer */
m->pPeer->m->llDeviceFilters.attach(newList);
}
else
{
/* we have no peer (our parent is the newly created machine);
* just commit changes to filters */
commitFilters = true;
}
}
else
{
/* the list of filters itself is not changed,
* just commit changes to filters themselves */
commitFilters = true;
}
if (commitFilters)
{
DeviceFilterList::const_iterator it = m->llDeviceFilters->begin();
while (it != m->llDeviceFilters->end())
{
(*it)->commit();
++ it;
}
}
#endif /* VBOX_WITH_USB */
}
