├── .gradle
├── 4.8
│ ├── fileChanges
│ │ └── last-build.bin
│ ├── fileHashes
│ │ ├── fileHashes.bin
│ │ └── fileHashes.lock
│ └── taskHistory
│ │ ├── taskHistory.bin
│ │ └── taskHistory.lock
├── buildOutputCleanup
│ ├── buildOutputCleanup.lock
│ ├── cache.properties
│ └── outputFiles.bin
└── vcsWorkingDirs
│ └── gc.properties
├── .idea
├── gradle.xml
├── kotlinc.xml
├── misc.xml
└── workspace.xml
├── build.gradle
├── gradle.properties
├── gradle
└── wrapper
│ ├── gradle-wrapper.jar
│ └── gradle-wrapper.properties
├── gradlew
├── gradlew.bat
├── out
└── production
│ └── classes
│ ├── META-INF
│ └── Coroutines_main.kotlin_module
│ ├── MainKt$calculateHardThings$1.class
│ ├── MainKt$exampleAsyncAwait$1$deferred1$1.class
│ ├── MainKt$exampleAsyncAwait$1$deferred2$1.class
│ ├── MainKt$exampleAsyncAwait$1$deferred3$1.class
│ ├── MainKt$exampleAsyncAwait$1.class
│ ├── MainKt$exampleBlocking$1.class
│ ├── MainKt$exampleBlockingDispatcher$1.class
│ ├── MainKt$exampleLaunchCoroutineScope$1$1.class
│ ├── MainKt$exampleLaunchCoroutineScope$1.class
│ ├── MainKt$exampleLaunchGlobal$1$1.class
│ ├── MainKt$exampleLaunchGlobal$1.class
│ ├── MainKt$exampleLaunchGlobalWaiting$1$job$1.class
│ ├── MainKt$exampleLaunchGlobalWaiting$1.class
│ ├── MainKt$exampleWithContext$1$result1$1.class
│ ├── MainKt$exampleWithContext$1$result2$1.class
│ ├── MainKt$exampleWithContext$1$result3$1.class
│ ├── MainKt$exampleWithContext$1.class
│ ├── MainKt$printlnDelayed$1.class
│ └── MainKt.class
├── settings.gradle
└── src
└── main
└── kotlin
└── main.kt
/.gradle/4.8/fileChanges/last-build.bin:
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/.gradle/4.8/fileHashes/fileHashes.bin:
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/.gradle/buildOutputCleanup/cache.properties:
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1 | #Fri Oct 05 17:52:21 CEST 2018
2 | gradle.version=4.8
3 |
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/.gradle/buildOutputCleanup/outputFiles.bin:
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/.gradle/vcsWorkingDirs/gc.properties:
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/build.gradle:
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1 | plugins {
2 | id 'org.jetbrains.kotlin.jvm' version '1.3.0-rc-146'
3 | }
4 |
5 | group 'Coroutines'
6 | version '1.0-SNAPSHOT'
7 |
8 | repositories {
9 | maven { url 'http://dl.bintray.com/kotlin/kotlin-eap' }
10 | mavenCentral()
11 | }
12 |
13 | dependencies {
14 | compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
15 | // https://mvnrepository.com/artifact/org.jetbrains.kotlinx/kotlinx-coroutines-core
16 | compile group: 'org.jetbrains.kotlinx', name: 'kotlinx-coroutines-core', version: '0.30.1-eap13'
17 | }
18 |
19 | compileKotlin {
20 | kotlinOptions.jvmTarget = "1.8"
21 | }
22 | compileTestKotlin {
23 | kotlinOptions.jvmTarget = "1.8"
24 | }
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/gradle.properties:
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1 | kotlin.code.style=official
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/gradle/wrapper/gradle-wrapper.jar:
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/gradle/wrapper/gradle-wrapper.properties:
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1 | distributionBase=GRADLE_USER_HOME
2 | distributionPath=wrapper/dists
3 | distributionUrl=https\://services.gradle.org/distributions/gradle-4.8-bin.zip
4 | zipStoreBase=GRADLE_USER_HOME
5 | zipStorePath=wrapper/dists
6 |
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/gradlew:
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1 | #!/usr/bin/env sh
2 |
3 | ##############################################################################
4 | ##
5 | ## Gradle start up script for UN*X
6 | ##
7 | ##############################################################################
8 |
9 | # Attempt to set APP_HOME
10 | # Resolve links: $0 may be a link
11 | PRG="$0"
12 | # Need this for relative symlinks.
13 | while [ -h "$PRG" ] ; do
14 | ls=`ls -ld "$PRG"`
15 | link=`expr "$ls" : '.*-> \(.*\)$'`
16 | if expr "$link" : '/.*' > /dev/null; then
17 | PRG="$link"
18 | else
19 | PRG=`dirname "$PRG"`"/$link"
20 | fi
21 | done
22 | SAVED="`pwd`"
23 | cd "`dirname \"$PRG\"`/" >/dev/null
24 | APP_HOME="`pwd -P`"
25 | cd "$SAVED" >/dev/null
26 |
27 | APP_NAME="Gradle"
28 | APP_BASE_NAME=`basename "$0"`
29 |
30 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
31 | DEFAULT_JVM_OPTS=""
32 |
33 | # Use the maximum available, or set MAX_FD != -1 to use that value.
34 | MAX_FD="maximum"
35 |
36 | warn () {
37 | echo "$*"
38 | }
39 |
40 | die () {
41 | echo
42 | echo "$*"
43 | echo
44 | exit 1
45 | }
46 |
47 | # OS specific support (must be 'true' or 'false').
48 | cygwin=false
49 | msys=false
50 | darwin=false
51 | nonstop=false
52 | case "`uname`" in
53 | CYGWIN* )
54 | cygwin=true
55 | ;;
56 | Darwin* )
57 | darwin=true
58 | ;;
59 | MINGW* )
60 | msys=true
61 | ;;
62 | NONSTOP* )
63 | nonstop=true
64 | ;;
65 | esac
66 |
67 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
68 |
69 | # Determine the Java command to use to start the JVM.
70 | if [ -n "$JAVA_HOME" ] ; then
71 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
72 | # IBM's JDK on AIX uses strange locations for the executables
73 | JAVACMD="$JAVA_HOME/jre/sh/java"
74 | else
75 | JAVACMD="$JAVA_HOME/bin/java"
76 | fi
77 | if [ ! -x "$JAVACMD" ] ; then
78 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
79 |
80 | Please set the JAVA_HOME variable in your environment to match the
81 | location of your Java installation."
82 | fi
83 | else
84 | JAVACMD="java"
85 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
86 |
87 | Please set the JAVA_HOME variable in your environment to match the
88 | location of your Java installation."
89 | fi
90 |
91 | # Increase the maximum file descriptors if we can.
92 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
93 | MAX_FD_LIMIT=`ulimit -H -n`
94 | if [ $? -eq 0 ] ; then
95 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
96 | MAX_FD="$MAX_FD_LIMIT"
97 | fi
98 | ulimit -n $MAX_FD
99 | if [ $? -ne 0 ] ; then
100 | warn "Could not set maximum file descriptor limit: $MAX_FD"
101 | fi
102 | else
103 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
104 | fi
105 | fi
106 |
107 | # For Darwin, add options to specify how the application appears in the dock
108 | if $darwin; then
109 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
110 | fi
111 |
112 | # For Cygwin, switch paths to Windows format before running java
113 | if $cygwin ; then
114 | APP_HOME=`cygpath --path --mixed "$APP_HOME"`
115 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
116 | JAVACMD=`cygpath --unix "$JAVACMD"`
117 |
118 | # We build the pattern for arguments to be converted via cygpath
119 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
120 | SEP=""
121 | for dir in $ROOTDIRSRAW ; do
122 | ROOTDIRS="$ROOTDIRS$SEP$dir"
123 | SEP="|"
124 | done
125 | OURCYGPATTERN="(^($ROOTDIRS))"
126 | # Add a user-defined pattern to the cygpath arguments
127 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then
128 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
129 | fi
130 | # Now convert the arguments - kludge to limit ourselves to /bin/sh
131 | i=0
132 | for arg in "$@" ; do
133 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
134 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
135 |
136 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
137 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
138 | else
139 | eval `echo args$i`="\"$arg\""
140 | fi
141 | i=$((i+1))
142 | done
143 | case $i in
144 | (0) set -- ;;
145 | (1) set -- "$args0" ;;
146 | (2) set -- "$args0" "$args1" ;;
147 | (3) set -- "$args0" "$args1" "$args2" ;;
148 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
149 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
150 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
151 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
152 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
153 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
154 | esac
155 | fi
156 |
157 | # Escape application args
158 | save () {
159 | for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
160 | echo " "
161 | }
162 | APP_ARGS=$(save "$@")
163 |
164 | # Collect all arguments for the java command, following the shell quoting and substitution rules
165 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
166 |
167 | # by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
168 | if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
169 | cd "$(dirname "$0")"
170 | fi
171 |
172 | exec "$JAVACMD" "$@"
173 |
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/gradlew.bat:
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1 | @if "%DEBUG%" == "" @echo off
2 | @rem ##########################################################################
3 | @rem
4 | @rem Gradle startup script for Windows
5 | @rem
6 | @rem ##########################################################################
7 |
8 | @rem Set local scope for the variables with windows NT shell
9 | if "%OS%"=="Windows_NT" setlocal
10 |
11 | set DIRNAME=%~dp0
12 | if "%DIRNAME%" == "" set DIRNAME=.
13 | set APP_BASE_NAME=%~n0
14 | set APP_HOME=%DIRNAME%
15 |
16 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
17 | set DEFAULT_JVM_OPTS=
18 |
19 | @rem Find java.exe
20 | if defined JAVA_HOME goto findJavaFromJavaHome
21 |
22 | set JAVA_EXE=java.exe
23 | %JAVA_EXE% -version >NUL 2>&1
24 | if "%ERRORLEVEL%" == "0" goto init
25 |
26 | echo.
27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
28 | echo.
29 | echo Please set the JAVA_HOME variable in your environment to match the
30 | echo location of your Java installation.
31 |
32 | goto fail
33 |
34 | :findJavaFromJavaHome
35 | set JAVA_HOME=%JAVA_HOME:"=%
36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe
37 |
38 | if exist "%JAVA_EXE%" goto init
39 |
40 | echo.
41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
42 | echo.
43 | echo Please set the JAVA_HOME variable in your environment to match the
44 | echo location of your Java installation.
45 |
46 | goto fail
47 |
48 | :init
49 | @rem Get command-line arguments, handling Windows variants
50 |
51 | if not "%OS%" == "Windows_NT" goto win9xME_args
52 |
53 | :win9xME_args
54 | @rem Slurp the command line arguments.
55 | set CMD_LINE_ARGS=
56 | set _SKIP=2
57 |
58 | :win9xME_args_slurp
59 | if "x%~1" == "x" goto execute
60 |
61 | set CMD_LINE_ARGS=%*
62 |
63 | :execute
64 | @rem Setup the command line
65 |
66 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
67 |
68 | @rem Execute Gradle
69 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
70 |
71 | :end
72 | @rem End local scope for the variables with windows NT shell
73 | if "%ERRORLEVEL%"=="0" goto mainEnd
74 |
75 | :fail
76 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
77 | rem the _cmd.exe /c_ return code!
78 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
79 | exit /b 1
80 |
81 | :mainEnd
82 | if "%OS%"=="Windows_NT" endlocal
83 |
84 | :omega
85 |
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/out/production/classes/META-INF/Coroutines_main.kotlin_module:
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1 |
2 |
3 |
4 | MainKt
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/out/production/classes/MainKt$printlnDelayed$1.class:
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https://raw.githubusercontent.com/ResoCoder/coroutines-kotlin-tutorial/ec004fd5b3534a8ba296a40c5ac87b03949f6bec/out/production/classes/MainKt$printlnDelayed$1.class
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/out/production/classes/MainKt.class:
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https://raw.githubusercontent.com/ResoCoder/coroutines-kotlin-tutorial/ec004fd5b3534a8ba296a40c5ac87b03949f6bec/out/production/classes/MainKt.class
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/settings.gradle:
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1 | pluginManagement {
2 | repositories {
3 | maven { url 'http://dl.bintray.com/kotlin/kotlin-eap' }
4 |
5 | mavenCentral()
6 |
7 | maven { url 'https://plugins.gradle.org/m2/' }
8 | }
9 | }
10 | rootProject.name = 'Coroutines'
11 |
12 |
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/src/main/kotlin/main.kt:
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1 | import kotlinx.coroutines.*
2 | import java.util.concurrent.ExecutorService
3 | import java.util.concurrent.Executors
4 |
5 | fun main(args: Array) {
6 | exampleWithContext()
7 | }
8 |
9 | suspend fun printlnDelayed(message: String) {
10 | // Complex calculation
11 | delay(1000)
12 | println(message)
13 | }
14 |
15 | suspend fun calculateHardThings(startNum: Int): Int {
16 | delay(1000)
17 | return startNum * 10
18 | }
19 |
20 | fun exampleBlocking() = runBlocking {
21 | println("one")
22 | printlnDelayed("two")
23 | println("three")
24 | }
25 |
26 | // Running on another thread but still blocking the main thread
27 | fun exampleBlockingDispatcher(){
28 | runBlocking(Dispatchers.Default) {
29 | println("one - from thread ${Thread.currentThread().name}")
30 | printlnDelayed("two - from thread ${Thread.currentThread().name}")
31 | }
32 | // Outside of runBlocking to show that it's running in the blocked main thread
33 | println("three - from thread ${Thread.currentThread().name}")
34 | // It still runs only after the runBlocking is fully executed.
35 | }
36 |
37 | fun exampleLaunchGlobal() = runBlocking {
38 | println("one - from thread ${Thread.currentThread().name}")
39 |
40 | GlobalScope.launch {
41 | printlnDelayed("two - from thread ${Thread.currentThread().name}")
42 | }
43 |
44 | println("three - from thread ${Thread.currentThread().name}")
45 | delay(3000)
46 | }
47 |
48 | fun exampleLaunchGlobalWaiting() = runBlocking {
49 | println("one - from thread ${Thread.currentThread().name}")
50 |
51 | val job = GlobalScope.launch {
52 | printlnDelayed("two - from thread ${Thread.currentThread().name}")
53 | }
54 |
55 | println("three - from thread ${Thread.currentThread().name}")
56 | job.join()
57 | }
58 |
59 | fun exampleLaunchCoroutineScope() = runBlocking {
60 | println("one - from thread ${Thread.currentThread().name}")
61 |
62 | val customDispatcher = Executors.newFixedThreadPool(2).asCoroutineDispatcher()
63 |
64 | launch(customDispatcher) {
65 | printlnDelayed("two - from thread ${Thread.currentThread().name}")
66 | }
67 |
68 | println("three - from thread ${Thread.currentThread().name}")
69 |
70 | (customDispatcher.executor as ExecutorService).shutdown()
71 | }
72 |
73 | fun exampleAsyncAwait() = runBlocking {
74 | val startTime = System.currentTimeMillis()
75 |
76 | val deferred1 = async { calculateHardThings(10) }
77 | val deferred2 = async { calculateHardThings(20) }
78 | val deferred3 = async { calculateHardThings(30) }
79 |
80 | val sum = deferred1.await() + deferred2.await() + deferred3.await()
81 | println("async/await result = $sum")
82 |
83 | val endTime = System.currentTimeMillis()
84 | println("Time taken: ${endTime - startTime}")
85 | }
86 |
87 | fun exampleWithContext() = runBlocking {
88 | val startTime = System.currentTimeMillis()
89 |
90 | val result1 = withContext(Dispatchers.Default) { calculateHardThings(10) }
91 | val result2 = withContext(Dispatchers.Default) { calculateHardThings(20) }
92 | val result3 = withContext(Dispatchers.Default) { calculateHardThings(30) }
93 |
94 | val sum = result1 + result2 + result3
95 | println("async/await result = $sum")
96 |
97 | val endTime = System.currentTimeMillis()
98 | println("Time taken: ${endTime - startTime}")
99 | }
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