fix: adapt Linux support to new architecture

README.md

@@ -25,7 +25,7 @@ power consumption, currently:
 - /sys/class/powercap/intel-rapl/intel-rapl:0/intel-rapl:0:2/energy_uj
 
 For the extension to work properly, these files need to be readable by the current user, which you can accomplish by
-running `sudo chmod +r` on these files. Note that this change will only persist until the next restart.
+running the provided `make_power_readable.sh` script. Note that this change will only persist until the next restart.
 
 ## Usage
 

make_power_readable.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+sudo find /sys/class/powercap/**/energy_uj -exec chmod +r {} \;
+

runtime/src/main/java/io/quarkiverse/power/runtime/PowerMeasurer.java

@@ -40,6 +40,7 @@ public static PowerMeasurer<? extends SensorMeasure> instance() {
 
     public PowerMeasurer(PowerSensor<M> sensor) {
         this.sensor = sensor;
+        this.onError(null);
     }
 
     public double cpuShareOfJVMProcess() {

runtime/src/main/java/io/quarkiverse/power/runtime/sensors/OngoingPowerMeasure.java

@@ -26,10 +26,16 @@ public void startNewMeasure() {
     }
 
     public void setComponent(int index, double value) {
+        if (current == null) {
+            throw new IllegalStateException("A new measure must be started before recording components");
+        }
         current[index] = value;
     }
 
     public double[] stopMeasure() {
+        if (current == null) {
+            throw new IllegalStateException("Measure was not started so cannot be stopped");
+        }
         final var recorded = new double[current.length];
         System.arraycopy(current, 0, recorded, 0, current.length);
         measures.add(recorded);

runtime/src/main/java/io/quarkiverse/power/runtime/sensors/linux/rapl/IntelRAPLSensor.java

@@ -96,13 +96,15 @@ private double computeNewComponentValue(int componentIndex, long sensorValue, do
 
     @Override
     public void update(OngoingPowerMeasure ongoingMeasure) {
+        ongoingMeasure.startNewMeasure();
         double cpuShare = PowerMeasurer.instance().cpuShareOfJVMProcess();
         for (int i = 0; i < raplFiles.length; i++) {
             final var value = raplFiles[i].extractPowerMeasure();
             final var newComponentValue = computeNewComponentValue(i, value, cpuShare);
             ongoingMeasure.setComponent(i, newComponentValue);
             lastMeasuredSensorValues[i] = newComponentValue;
         }
+        ongoingMeasure.stopMeasure();
     }
 
     @Override