59 lines
1.6 KiB
Kotlin
59 lines
1.6 KiB
Kotlin
/*
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* Copyright 2022 dorkbox, llc
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package dorkbox.objectPool.suspending
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import kotlinx.coroutines.channels.Channel
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/**
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* Wraps a Kotlin channel into a LIMITED queue implementations
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*/
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class ChannelQueue<E>(size: Int): SuspendingQueue<E> {
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private val channel = Channel<E>(size)
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override fun offer(element: E): Boolean {
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val result = channel.trySend(element)
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return result.isSuccess
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}
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override fun remove(): E {
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val tryReceive = channel.tryReceive()
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return tryReceive.getOrNull() ?: throw NoSuchElementException("Channel is empty")
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}
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override fun poll(): E? {
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val tryReceive = channel.tryReceive()
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return tryReceive.getOrNull()
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}
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override fun add(element: E): Boolean {
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val result = channel.trySend(element)
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if (result.isSuccess) {
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return true
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} else {
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throw IllegalStateException("Channel is full.")
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}
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}
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override suspend fun put(element: E) {
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channel.send(element)
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}
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override suspend fun take(): E {
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return channel.receive()
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}
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}
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