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Added queued transmitter.

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This is a normal transmitter than doesn't act synchronously and instead queues messages for future processing.

Can be useful to implement thread safe receive/transmit logic where a sub thread is requiring property changes that can be sent to a queued transmitter that is then processed in the main thread.
This commit is contained in:
Richard Harrison 2020-06-05 11:12:30 +02:00
parent fee5276ae6
commit 8b03cb4e60
1 changed files with 28 additions and 1 deletions
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29
Nasal/emesary.nas
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@ -196,6 +196,32 @@ var Transmitter =
}
};
var QueuedTransmitter =
{
new: func(_ident){
var new_class = { parents:[QueuedTransmitter], base:emesary.Transmitter};
new_class = emesary.Transmitter.new(_ident);
new_class.baseNotifyAll = new_class.NotifyAll;
new_class.Q = [];
new_class.NotifyAll = func(message){
append(me.Q, message);
return emesary.Transmitter.ReceiptStatus_Pending;
};
new_class.Process = func {
foreach (var m ; me.Q)
me.baseNotifyAll(m);
me.Q = [];
return emesary.Transmitter.ReceiptStatus_PendingFinished;
};
new_class.size = func {
return size(me.Q);
}
return new_class;
}
};
#
#
# Base class for Notifications. By convention a Notification has a type and a value.
@ -270,6 +296,7 @@ var Recipient =
# use this transmitters, however other transmitters can be created and merely use the global transmitter to discover each other
var GlobalTransmitter = Transmitter.new("GlobalTransmitter");
#
#
# This is basically a base64 like encode except we just use alphanumerics which gives us a base62 encode.
@ -506,4 +533,4 @@ var TransferCoord =
#print ("i ",i, " --> ", (TransferNorm.decode(TransferNorm.encode(i,2), 2,0)).value);
#debug.dump(TransferNorm.decode(TransferNorm.encode(-1,2), 2,0));
#debug.dump(TransferNorm.decode(TransferNorm.encode(0,2), 2,0));
#debug.dump(TransferNorm.decode(TransferNorm.encode(1,2), 2,0));
#debug.dump(TransferNorm.decode(TransferNorm.encode(1,2), 2,0));