Debug info: running time

app/src/main/java/eu/faircode/email/FragmentMessages.java

@@ -71,6 +71,7 @@ import android.os.Debug;
 import android.os.OperationCanceledException;
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.os.SystemClock;
 import android.print.PrintAttributes;
 import android.print.PrintDocumentAdapter;
 import android.print.PrintJob;
@@ -6190,6 +6191,9 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
                 " no=" + (tvNoEmail.getVisibility() == View.VISIBLE));
     }
 
+    private Long lastCpu = null;
+    private Long lastTime = null;
+
     private void updateDebugInfo() {
         if (!getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED))
             return;
@@ -6199,7 +6203,21 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
         long hmax = rt.maxMemory();
         long nheap = Debug.getNativeHeapAllocatedSize();
         int perc = Math.round(hused * 100f / hmax);
-        tvDebug.setText(perc + "% " + (nheap / (1024 * 1024)) + "M");
+
+        int utilization = 0;
+        long cpu = android.os.Process.getElapsedCpuTime();
+        long time = SystemClock.elapsedRealtime();
+        if (lastCpu != null) {
+            int cpuDelta = (int) (cpu - lastCpu);
+            int timeDelta = (int) (time - lastTime);
+            if (timeDelta != 0)
+                utilization = 100 * cpuDelta / timeDelta / rt.availableProcessors();
+        }
+        lastCpu = cpu;
+        lastTime = time;
+
+
+        tvDebug.setText(perc + "% " + (nheap / (1024 * 1024)) + "M" + " " + utilization + "%");
     }
 
     private boolean handleThreadActions(

app/src/main/java/eu/faircode/email/Helper.java

@@ -1677,6 +1677,14 @@ public class Helper {
             return DateUtils.getRelativeTimeSpanString(context, millis);
     }
 
+    static String formatDuration(long ms) {
+        int days = (int) (ms / (24 * 3600 * 1000L));
+        ms = ms % (24 * 3600 * 1000L);
+        long seconds = ms / 1000;
+        ms = ms % 1000;
+        return (days > 0 ? days + " " : "") + DateUtils.formatElapsedTime(seconds) + "." + ms;
+    }
+
     static String formatNumber(Integer number, long max, NumberFormat nf) {
         if (number == null)
             return null;

app/src/main/java/eu/faircode/email/Log.java

@@ -57,6 +57,7 @@ import android.os.LocaleList;
 import android.os.OperationCanceledException;
 import android.os.PowerManager;
 import android.os.RemoteException;
+import android.os.SystemClock;
 import android.os.TransactionTooLargeException;
 import android.provider.Settings;
 import android.text.SpannableStringBuilder;
@@ -1888,7 +1889,15 @@ public class Log {
 
         sb.append("\r\n");
 
-        sb.append(String.format("Processors: %d\r\n", Runtime.getRuntime().availableProcessors()));
+        int cpus = Runtime.getRuntime().availableProcessors();
+        sb.append(String.format("Processors: %d\r\n", cpus));
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+            long running = SystemClock.uptimeMillis() - android.os.Process.getStartUptimeMillis();
+            long cpu = android.os.Process.getElapsedCpuTime();
+            int util = (int) (running == 0 ? 0 : 100 * cpu / running / cpus);
+            sb.append(String.format("Uptime: %s CPU: %s %d%%\r\n",
+                    Helper.formatDuration(running), Helper.formatDuration(cpu), util));
+        }
 
         ActivityManager am = Helper.getSystemService(context, ActivityManager.class);
         ActivityManager.MemoryInfo mi = new ActivityManager.MemoryInfo();