Gradle Plugin Run/Debug Configuration - Where are the debug options defined?

Hello There,

i have Spring Boot Java application which can be build with gradle. I have imported my project in IntelliJ as gradle project.

I have defined in my build.gradle some applicationDefaultJvmArgs which are used when i start my gradle task via Run configuration

project.gradle.projectsEvaluated {
    // Read spring profile from command line, Debug options
    applicationDefaultJvmArgs = ["-Dspring.profiles.active=${project.gradle.startParameter.systemPropertiesArgs['spring.profiles.active']}", "-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=9090"]

}

My Run/Debug Configuration has the following setup...

Name: runFoo
Single instance only: checked

Taks: run
VM options:
Script parameters: -Dspring.profiles.active=local

---

If i start the application in run mode...

/Library/Java/JavaVirtualMachines/jdk1.8.0_25.jdk/Contents/Home/bin/java
-Dspring.profiles.active=local
-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=9090
-Dfile.encoding=UTF-8 -Duser.country=US -Duser.language=en -Duser.variant

is executed.

---

if i start in debug mode....
/Library/Java/JavaVirtualMachines/jdk1.8.0_25.jdk/Contents/Home/bin/java
-agentlib:jdwp=transport=dt_socket,server=n,suspend=y,address=51378
-Dfile.encoding=UTF-8 -Duser.country=US -Duser.language=en -Duser.variant

is executed.

Where are these "-agentlib:jdwp=transport=dt_socket,server=n,suspend=y,address=51378" options defined? Is it coming as default from the gradle plugin? The address port change on every start. Where is the port defined? Where can I configure the options for debug mode?

Any help? Thanks for every hint.
Daniel