Icons are greyed out.

[roberterdin]

The VisualVM icons are greyed out. I specified the executable (/usr/lib/jvm/java-8-oracle/bin/jvisualvm, that is on Ubuntu) but nothing happens.
I can run the VisualVM from the terminal without problems.

Any ideas where to start troubleshooting?

IDEA version: 14.1

[krasa]

there is only this condition:

    public boolean canRun(@NotNull String executorId, @NotNull RunProfile profile) {
        return executorId.equals(RunVisualVMExecutor.RUN_WITH_VISUAL_VM)
                && profile instanceof ModuleRunProfile
                && !(profile instanceof RemoteConfiguration);
    }

What kind of Run Configuration are you using?

[roberterdin]

I execute a gradle task as Run Configuration:
cleanTest test --tests SomeTest

I guess I need a JAR Applicatoin?

[krasa]

Yep, JUnit/TestNG/Application...

I will look into it, but not even YourKit buttons are enabled for gradle...

[roberterdin]

Ok thank you. Don't worry too much about Gradle support... if somebedy wants to profile something he will manage to make an according Run Configuration :)

[krasa]

I just tried it, and it does not seem possible without some heavy hacks, since Gradle uses deamons.

[roberterdin]

At least for Unit Tests, yes. AFAIK (have not veryfied this) it starts the application without a daemon.

[krasa]

task execute(type:JavaExec) {
    main = mainClass
    classpath = sourceSets.main.runtimeClasspath
}

this uses the deamon too.

It is possible to run it as a Groovy task, then it will run in its own process with the visualvm.id correctly set and with working buttons, however that is a wrapper too (org.gradle.launcher.GradleMain) and forks another process in which the app is running, and it cannot be debugged this way - Maven does something similar and the process forking can be disabled, so perhaps this too can be configured...

There must be some way how to pass a VM parameter via the deamon to the forked processes...

[roberterdin]

The gradle run task from the Application Plugin runs my application in a seperate process. It sais it uses the JavaExec function. This function also takes VM args.

Example:

// File: build.gradle
apply plugin: 'java'

task(runSimple, dependsOn: 'classes', type: JavaExec) {
    main = 'com.mrhaki.java.Simple'
    classpath = sourceSets.main.runtimeClasspath
    args 'mrhaki'
    jvmArgs "-DsomeArg=xx", "-Danother=yy"
    systemProperty 'simple.message', 'Hello '
}

Source: http://mrhaki.blogspot.com/2010/09/gradle-goodness-run-java-application.html

edit: did not read your answer correctly, discard what I just wrote

[IngeniousTom]

I have the same issue!
After I installed and configured Visual VM Launcher and restarted the Intellij IDEA 2021.3.3 I can see that icons are greyed out as shown on the screenshot below.

Icons are also greyed out even in "Run" menu as you can see on the screenshot below:

-My project uses the same jdk as shown in the plugin configuration;
-My project starts with gradle task (look at the screenshot below).

Can you help me with this problem?

[igorwojda]

@krasa I think I have found the root cause of this problem - it is all about configuration type:

Icons are grayed out for Gradle configurations:

Icons are active for JUnit configurations:

You can also observe similar behavior when launching tests from IntelliJ IDEA

No Icons for Gradle configurations:

Icons are visible for JUnit configurations:

Action
It looks like this Plugin needs some changes because the Gradle configuration is the default way of running tests nowadays:

Changing Default test configuration
This option allows us to determine which configuration will be created while running tests from the IntelliJ IDEA.