这可能是一个愚蠢的问题,但在 aeron (agrona) 中有一个 OneToOneRingBuffer 和一个 ManyToOneRingBuffer 可用。我有一个生产者和许多消费者我想知道如何实现OneToManyRingBuffer的等效效果?
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BroadcastTransmitter
在 Agrona中BroadcastReceiver
是一种可以为您提供一对多语义的方法。
值得注意的是,缓慢的消费者可能会看到消息被丢弃。如果不希望这样做,那么您还可以查看 Aeron IPC,它会在这种情况下对发布者施加背压。
例子
顶级,这里是如何使用它:
// Create broadcast buffer
int capacity = 1 << 10; // Must be power of two
int bufferSize = capacity + BroadcastBufferDescriptor.TRAILER_LENGTH;
UnsafeBuffer broadcastBuffer = new UnsafeBuffer(new byte[bufferSize]);
// Create transmitter
BroadcastTransmitter transmitter = new BroadcastTransmitter(broadcastBuffer);
// Create receiver (can create many of these)
BroadcastReceiver broadcastReceiver = new BroadcastReceiver(broadcastBuffer);
CopyBroadcastReceiver copyBroadcastReceiver = new CopyBroadcastReceiver(broadcastReceiver);
// Send message
int msgTypeId = 1;
MutableDirectBuffer msgBuffer = new ExpandableArrayBuffer();
int msgLength = msgBuffer.putStringWithoutLengthAscii(0, "Hello World!");
transmitter.transmit(msgTypeId, msgBuffer, 0, msgLength);
// Receive message
copyBroadcastReceiver.receive(
(msgType, buffer, offset, length) -> System.out.println(buffer.getStringWithoutLengthAscii(offset, length)));
于 2020-06-14T21:00:00.560 回答