Vsevolod Tolstopyatov | 1dbc25e | 2018-04-18 14:50:26 +0300 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016-2017 JetBrains s.r.o. |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | // This file was automatically generated from coroutines-guide.md by Knit tool. Do not edit. |
Roman Elizarov | a9687a3 | 2018-06-29 17:28:38 +0300 | [diff] [blame] | 18 | package kotlinx.coroutines.experimental.guide.channel10 |
Vsevolod Tolstopyatov | 1dbc25e | 2018-04-18 14:50:26 +0300 | [diff] [blame] | 19 | |
| 20 | import kotlinx.coroutines.experimental.* |
| 21 | import kotlinx.coroutines.experimental.channels.* |
Vsevolod Tolstopyatov | 1dbc25e | 2018-04-18 14:50:26 +0300 | [diff] [blame] | 22 | |
| 23 | fun main(args: Array<String>) = runBlocking<Unit> { |
Roman Elizarov | b5328a7 | 2018-06-06 18:31:21 +0300 | [diff] [blame] | 24 | val tickerChannel = ticker(delay = 100, initialDelay = 0) // create ticker channel |
Vsevolod Tolstopyatov | 03d2ff7 | 2018-05-29 17:28:20 +0300 | [diff] [blame] | 25 | var nextElement = withTimeoutOrNull(1) { tickerChannel.receive() } |
| 26 | println("Initial element is available immediately: $nextElement") // Initial delay hasn't passed yet |
Vsevolod Tolstopyatov | 1dbc25e | 2018-04-18 14:50:26 +0300 | [diff] [blame] | 27 | |
Vsevolod Tolstopyatov | 03d2ff7 | 2018-05-29 17:28:20 +0300 | [diff] [blame] | 28 | nextElement = withTimeoutOrNull(50) { tickerChannel.receive() } // All subsequent elements has 100ms delay |
Vsevolod Tolstopyatov | 1dbc25e | 2018-04-18 14:50:26 +0300 | [diff] [blame] | 29 | println("Next element is not ready in 50 ms: $nextElement") |
| 30 | |
Roman Elizarov | b5328a7 | 2018-06-06 18:31:21 +0300 | [diff] [blame] | 31 | nextElement = withTimeoutOrNull(60) { tickerChannel.receive() } |
Vsevolod Tolstopyatov | 1dbc25e | 2018-04-18 14:50:26 +0300 | [diff] [blame] | 32 | println("Next element is ready in 100 ms: $nextElement") |
| 33 | |
| 34 | // Emulate large consumption delays |
Roman Elizarov | b5328a7 | 2018-06-06 18:31:21 +0300 | [diff] [blame] | 35 | println("Consumer pauses for 150ms") |
Vsevolod Tolstopyatov | 1dbc25e | 2018-04-18 14:50:26 +0300 | [diff] [blame] | 36 | delay(150) |
| 37 | // Next element is available immediately |
Vsevolod Tolstopyatov | 03d2ff7 | 2018-05-29 17:28:20 +0300 | [diff] [blame] | 38 | nextElement = withTimeoutOrNull(1) { tickerChannel.receive() } |
Vsevolod Tolstopyatov | 1dbc25e | 2018-04-18 14:50:26 +0300 | [diff] [blame] | 39 | println("Next element is available immediately after large consumer delay: $nextElement") |
| 40 | // Note that the pause between `receive` calls is taken into account and next element arrives faster |
Roman Elizarov | b5328a7 | 2018-06-06 18:31:21 +0300 | [diff] [blame] | 41 | nextElement = withTimeoutOrNull(60) { tickerChannel.receive() } |
Vsevolod Tolstopyatov | 1dbc25e | 2018-04-18 14:50:26 +0300 | [diff] [blame] | 42 | println("Next element is ready in 50ms after consumer pause in 150ms: $nextElement") |
| 43 | |
Vsevolod Tolstopyatov | 03d2ff7 | 2018-05-29 17:28:20 +0300 | [diff] [blame] | 44 | tickerChannel.cancel() // indicate that no more elements are needed |
Vsevolod Tolstopyatov | 1dbc25e | 2018-04-18 14:50:26 +0300 | [diff] [blame] | 45 | } |