forked from Parallele_Programmierung/Labs
initial
parent
5aa83f1b3d
commit
f6c4ac8bcc
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# Justfile (https://just.systems/) for starting Maven standard targets
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default: clean compile package
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just exec pp.Main ""
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exec class args: compile
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mvn exec:java -Dexec.args="{{args}}" -Dexec.mainClass={{class}}
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# exec class args:
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# java -cp target/app.jar {{class}} {{args}}
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clean:
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mvn clean
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compile:
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mvn compile
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test: compile
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mvn test
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javadoc:
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mvn javadoc:javadoc
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package:
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mvn package
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>pp</groupId>
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<artifactId>pp.09.01-Fiber</artifactId>
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<version>1.0-SNAPSHOT</version>
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<packaging>jar</packaging>
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<properties>
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<maven.compiler.release>23</maven.compiler.release>
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<lombok.version>edge-SNAPSHOT</lombok.version>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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</properties>
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<dependencies>
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<dependency><!-- für Unit-Tests -->
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<groupId>org.junit.jupiter</groupId>
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<artifactId>junit-jupiter</artifactId>
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<version>5.10.0</version>
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<scope>test</scope>
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</dependency>
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<dependency><!-- für Lombok -->
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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<version>${lombok.version}</version>
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<scope>provided</scope>
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</dependency>
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<dependency><!-- für net.jcip Annotationen -->
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<groupId>net.jcip</groupId>
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<artifactId>jcip-annotations</artifactId>
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<version>1.0</version>
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<scope>provided</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin><!-- für Unit-Tests [mvn test] -->
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-surefire-plugin</artifactId>
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<version>3.0.0</version>
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</plugin>
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<plugin><!-- [mvn compile] -->
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.9.0</version>
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<configuration>
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<annotationProcessorPaths>
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<path>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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<version>${lombok.version}</version>
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</path>
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</annotationProcessorPaths>
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</configuration>
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</plugin>
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<plugin><!-- [mvn exec:java] -->
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<groupId>org.codehaus.mojo</groupId>
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<artifactId>exec-maven-plugin</artifactId>
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<version>3.1.0</version>
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</plugin>
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<plugin><!-- [mvn javadoc:javadoc] -->
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-javadoc-plugin</artifactId>
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<version>3.5.0</version>
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<configuration>
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<show>private</show>
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<locale>en_US</locale>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>
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package pp;
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public class Main {
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private final static int NUM = 100;
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public static void main(String[] args) throws InterruptedException {
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pp.fiber.Performance.main();
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pp.fiber.first.ThreadPerformance.main();
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pp.fiber.first.FiberPerformance.main();
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pp.fiber.second.ThreadPerformance.main(String.valueOf(NUM));
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pp.fiber.second.FiberPerformance.main(String.valueOf(NUM));
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pp.fiber.second.FiberPerformance.main(String.valueOf(NUM*10));
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pp.fiber.second.FiberPerformance.main(String.valueOf(NUM*100));
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pp.fiber.second.FiberPerformance.main(String.valueOf(NUM*1000));
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System.exit(0);
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}
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}
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package pp.fiber;
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public class Performance {
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static long now;
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public static void main(String... args) throws InterruptedException {
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now = System.nanoTime();
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now = System.nanoTime() - now;
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System.out.printf("Zeitdauer zwischen zwei Instruktionen (Baseline \"Minimum\"): %3.3f ms\n", now / 1000.0);
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}
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}
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package pp.fiber.first;
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public class FiberPerformance {
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static long now;
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public static void main(String... args) throws InterruptedException {
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now = System.nanoTime();
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var t = Thread.ofVirtual()
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.unstarted(() -> now = System.nanoTime() - now);
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t.start();
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t.join();
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System.out.printf("Fast leerer virtueller Thread Starten bis Ende (Baseline: \"Fiber\": %3.3f ns\n", now / 1000.0);
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}
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}
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package pp.fiber.first;
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public class ThreadPerformance {
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static long now;
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public static void main(String... args) throws InterruptedException {
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now = System.nanoTime();
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var t = new Thread(() -> now = System.nanoTime() - now);
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t.start();
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t.join();
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System.out.printf("Fast leerer Plattform-Thread Starten bis Ende (Baseline: \"Thread\": %3.3f ns\n", now / 1000.0);
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}
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}
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package pp.fiber.second;
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public class FiberPerformance {
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static long now;
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public static void main(String... args) throws InterruptedException {
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var NUM = 100;
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if (args.length == 1) {
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NUM = Integer.valueOf(args[0]);
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}
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var threads = new Thread[NUM];
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for (var i = 0; i < Integer.valueOf(NUM); i++) {
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threads[i] = Thread.ofVirtual().unstarted(() -> {
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while (true)
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Thread.yield();
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});
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threads[i].start(); // 1. virt. Thread: "Endlos-Daemon"
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}
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now = System.nanoTime();
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var t = Thread.ofVirtual()
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.unstarted(() -> now = System.nanoTime() - now);
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t.start();
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t.join();
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System.out.printf("Virtueller Thread Nr. %d starten und beenden (%d virtuelle Threads laufen bereits endlos) %3.3f ns\n", NUM+1, NUM, now / 1000.0);
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for (var i = 0; i < Integer.valueOf(NUM); i++) {
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threads[i].interrupt();
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}
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}
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}
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@ -0,0 +1,31 @@
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package pp.fiber.second;
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public class ThreadPerformance {
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static long now;
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public static void main(String... args) throws InterruptedException {
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var NUM = 100;
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if (args.length == 1) {
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NUM = Integer.valueOf(args[0]);
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}
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var threads = new Thread[NUM];
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for (var i = 0; i < Integer.valueOf(NUM); i++) {
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threads[i] = new Thread(() -> {
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while (true)
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Thread.yield();
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});
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threads[i].start(); // 1. virt. Thread: "Endlos-Daemon"
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}
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now = System.nanoTime();
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var t = new Thread(() -> now = System.nanoTime() - now);
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t.start();
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t.join();
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System.out.printf("Plattform Thread Nr. %d starten und beenden (%d Plattform-Threads laufen bereits endlos) %3.3f ns\n", NUM+1, NUM, now / 1000.0);
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for (var i = 0; i < Integer.valueOf(NUM); i++) {
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threads[i].interrupt();
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}
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}
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}
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