private static void HandleAsyncCall(Thread target, VBinderMessage msg)
{
var entry = target.VBinderState.Completion;
var length = msg.Length;
entry.ptr_label.Write(target.Parent, msg.label);
entry.userBuf.Write(target, new Pointer(msg.payload.Location), length);
msg.Recycle();
target.VBinderState.Completion = null;
target.ReturnFromCompletion(length);
}
private static void HandleAsyncCall(Thread target, VBinderMessage msg)
{
var entry = target.VBinderState.Completion;
var length = msg.Length;
entry.ptr_label.Write(target.Parent, msg.label);
entry.userBuf.Write(target, new Pointer(msg.payload.Location), length);
msg.Recycle();
target.VBinderState.Completion = null;
target.ReturnFromCompletion(length);
}
public void Enqueue(VBinderMessage x)
{
Contract.Requires(x != null && x.GhostTarget == GhostOwner);
if (len == data.Length)
{
Arch.Console.WriteLine("VBinderMessage overflow");
Utils.Panic();
return;
}
var nextEmpty = first + len < data.Length ? first + len : first + len - data.Length;
data[nextEmpty] = x;
++len;
}
public void Enqueue(VBinderMessage x)
{
Contract.Requires(x != null && x.GhostTarget == GhostOwner);
if (len == data.Length)
{
Arch.Console.WriteLine("VBinderMessage overflow");
Utils.Panic();
return;
}
var nextEmpty = first + len < data.Length ? first + len : first + len - data.Length;
data[nextEmpty] = x;
++len;
}
private static int Send(Thread current, int cap_idx, UserPtr userBuf, uint size)
{
if (!current.Parent.Space.VerifyRead(userBuf, size))
{
return(-ErrorCode.EFAULT);
}
var cap_ref = current.VBinderState.Find(current, cap_idx);
if (cap_ref == null)
{
return(-ErrorCode.EINVAL);
}
var blob = Globals.AllocateAlignedCompletionBuffer((int)size);
if (!blob.isValid)
{
return(-ErrorCode.ENOMEM);
}
if (userBuf.Read(current, blob, (int)size) != 0)
{
return(-ErrorCode.EFAULT);
}
var targetThread = cap_ref.def.parent;
// Object invariant of thread
Contract.Assume(targetThread.VBinderState.Owner == targetThread);
var msg = new VBinderMessage(current, targetThread, cap_ref.def.label, blob, (int)size);
if (targetThread.VBinderState.Completion != null)
{
HandleAsyncCall(targetThread, msg);
}
else
{
Contract.Assert(msg.GhostTarget == targetThread);
targetThread.VBinderState.Enqueue(msg);
}
return((int)size);
}
public void Enqueue(VBinderMessage msg)
{
Contract.Requires(msg != null && msg.GhostTarget == Owner);
MessageQueue.Enqueue(msg);
}
private static int Send(Thread current, int cap_idx, UserPtr userBuf, uint size)
{
if (!current.Parent.Space.VerifyRead(userBuf, size))
return -ErrorCode.EFAULT;
var cap_ref = current.VBinderState.Find(current, cap_idx);
if (cap_ref == null)
return -ErrorCode.EINVAL;
var blob = Globals.AllocateAlignedCompletionBuffer((int)size);
if (!blob.isValid)
return -ErrorCode.ENOMEM;
if (userBuf.Read(current, blob, (int)size) != 0)
return -ErrorCode.EFAULT;
var targetThread = cap_ref.def.parent;
// Object invariant of thread
Contract.Assume(targetThread.VBinderState.Owner == targetThread);
var msg = new VBinderMessage(current, targetThread, cap_ref.def.label, blob, (int)size);
if (targetThread.VBinderState.Completion != null)
{
HandleAsyncCall(targetThread, msg);
}
else
{
Contract.Assert(msg.GhostTarget == targetThread);
targetThread.VBinderState.Enqueue(msg);
}
return (int)size;
}
public void Enqueue(VBinderMessage msg)
{
Contract.Requires(msg != null && msg.GhostTarget == Owner);
MessageQueue.Enqueue(msg);
}