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• RendezvousChannel.kt

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commonMain.channels.RendezvousChannel.kt Maven / Gradle / Ivy

/*
 * Copyright 2016-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
 */

package kotlinx.coroutines.channels

import kotlinx.coroutines.internal.*

/**
 * Rendezvous channel. This channel does not have any buffer at all. An element is transferred from sender
 * to receiver only when [send] and [receive] invocations meet in time (rendezvous), so [send] suspends
 * until another coroutine invokes [receive] and [receive] suspends until another coroutine invokes [send].
 *
 * Use `Channel()` factory function to conveniently create an instance of rendezvous channel.
 *
 * This implementation is fully lock-free.
 **/
internal open class RendezvousChannel(onUndeliveredElement: OnUndeliveredElement?) : AbstractChannel(onUndeliveredElement) {
    protected final override val isBufferAlwaysEmpty: Boolean get() = true
    protected final override val isBufferEmpty: Boolean get() = true
    protected final override val isBufferAlwaysFull: Boolean get() = true
    protected final override val isBufferFull: Boolean get() = true
}