Measure time for the execution of each gradle task executed

GradleTaskTimer.gradle

class TaskTimerListener implements TaskExecutionListener {

    private Clock clock

    @Override
    void beforeExecute(Task task) {
        clock = new org.gradle.util.Clock()
    }

    @Override
    void afterExecute(Task task, TaskState taskState) {
        task.project.logger.info "Execution of ${task.name} took ${clock.time}"
    }
}

gradle.addListener new TaskTimerListener()

Now, how can do this optionally? I'd like to have timings show up when you add a task. example "./gradlew timing assembleDebug"

You can add a command line flag and conditionally add the Listener. Example
./gradlew test -PtimeTest
Code example

I realize this is an old thread. I'm using a form of this, but I've noticed with multi-project builds, the Listener actually multiplies all tasks across all projects. Very strange.

@stewartbryson I'm seeing the same. Please share if you find a fix for this.