internal override Allocation *MoveEndpoint(SharedHeap fromHeap,
SharedHeap toHeap,
Process newOwner)
{
DebugStub.Assert(fromHeap == toHeap);
// Careful about the order.
// Since we don't know if this is a release (current process owns it)
// or an acquire (current process does not necessarily own it), we
// have to bypass the owner check here.
int processId = newOwner.ProcessId;
this.ProcessId = processId;
this.OwnerPrincipalHandle = new PrincipalHandle(newOwner.Principal.Val);
// Don't check for delegation here since this is for kernel calls on
// moving endpoints to SIPs. Delegation should not be involved.
// The following should not be necessary, but just in case:
this.OwnerDelegationState = DelegationState.None;
Allocation.SetOwnerProcessId(this.endpointAlloc, processId);
Allocation.SetOwnerProcessId(this.peerEp, processId);
Monitoring.Log(Monitoring.Provider.EndpointCore,
(ushort)EndpointCoreEvent.TransferToProcess, 0,
(uint)ChannelId, (uint)processId, 0, 0, 0);
return(this.endpointAlloc);
}
/// <summary>
/// The peer thread might try this too, so we use the ref count of the
/// underlying memory to allow only the last freeer to also free the
/// associated auto-reset event handle. Make sure to grab the handle
/// before freeing the endpoint.
/// </summary>
unsafe private static bool TryFreeResources(
Allocation * /*EndpointCore*/ endpoint,
SharedHeap.AllocationOwnerId ownerId)
{
EndpointCore *epData =
(EndpointCore *)Allocation.GetDataUnchecked(endpoint);
AutoResetEventHandle areHandle = epData->GetAreHandle();
DeliveryHandle dh = epData->dImpHandle;
int channelId = epData->ChannelId;
bool lastRefGone = SharedHeap.KernelSharedHeap.Free(endpoint,
ownerId);
if (lastRefGone)
{
if (dh != DeliveryHandle.Zero)
{
DeliveryHandle.Dispose(dh);
}
if (areHandle.id != UIntPtr.Zero)
{
Process.kernelProcess.ReleaseHandle(areHandle.id);
}
}
return(lastRefGone);
}
internal override void Initialize(DeliveryImpl peerDi)
{
peerEp = SharedHeap.CurrentProcessSharedHeap.Share(peerDi.EndpointAlloc,
SharedHeap.CurrentProcessSharedHeap.EndpointPeerOwnerId,
(UIntPtr)0,
Allocation.GetSize(peerDi.EndpointAlloc));
this.endpoint->SetCachedPeer(peerEp);
this.endpoint->SetPeerStateValid(true);
}