Debug cursor window size

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

@@ -70,6 +70,7 @@ import androidx.preference.PreferenceManager;
 
 import java.io.File;
 import java.io.IOException;
+import java.lang.reflect.Field;
 import java.nio.charset.Charset;
 import java.text.NumberFormat;
 import java.util.ArrayList;
@@ -146,6 +147,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
     private TextView tvStorageUsage;
     private TextView tvSuffixes;
     private TextView tvFingerprint;
+    private TextView tvCursorWindow;
     private Button btnGC;
     private Button btnCharsets;
     private Button btnCiphers;
@@ -266,6 +268,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
         tvStorageUsage = view.findViewById(R.id.tvStorageUsage);
         tvSuffixes = view.findViewById(R.id.tvSuffixes);
         tvFingerprint = view.findViewById(R.id.tvFingerprint);
+        tvCursorWindow = view.findViewById(R.id.tvCursorWindow);
         btnGC = view.findViewById(R.id.btnGC);
         btnCharsets = view.findViewById(R.id.btnCharsets);
         btnCiphers = view.findViewById(R.id.btnCiphers);
@@ -1172,6 +1175,17 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
 
         tvFingerprint.setText(Helper.getFingerprint(getContext()));
 
+        int cursorWindowSize = -1;
+        try {
+            Field fCursorWindowSize = io.requery.android.database.CursorWindow.class.getDeclaredField("sDefaultCursorWindowSize");
+            fCursorWindowSize.setAccessible(true);
+            cursorWindowSize = fCursorWindowSize.getInt(null);
+        } catch (Throwable ex) {
+            Log.w(ex);
+        }
+        tvCursorWindow.setText(getString(R.string.title_advanced_cursor_window,
+                Helper.humanReadableByteCount(cursorWindowSize, false)));
+
         cardDebug.setVisibility(swDebug.isChecked() || BuildConfig.DEBUG ? View.VISIBLE : View.GONE);
     }
 

app/src/main/res/layout/fragment_options_misc.xml

@@ -855,6 +855,17 @@
                     app:layout_constraintStart_toStartOf="parent"
                     app:layout_constraintTop_toBottomOf="@id/tvMemoryUsage" />
 
+                <eu.faircode.email.FixedTextView
+                    android:id="@+id/tvCursorWindow"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:text="@string/title_advanced_cursor_window"
+                    android:textAppearance="@style/TextAppearance.AppCompat.Small"
+                    android:textIsSelectable="true"
+                    app:layout_constraintEnd_toEndOf="parent"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@id/tvStorageUsage" />
+
                 <eu.faircode.email.FixedTextView
                     android:id="@+id/tvSuffixes"
                     android:layout_width="0dp"
@@ -864,7 +875,7 @@
                     android:textIsSelectable="true"
                     app:layout_constraintEnd_toEndOf="parent"
                     app:layout_constraintStart_toStartOf="parent"
-                    app:layout_constraintTop_toBottomOf="@id/tvStorageUsage" />
+                    app:layout_constraintTop_toBottomOf="@id/tvCursorWindow" />
 
                 <eu.faircode.email.FixedTextView
                     android:id="@+id/tvFingerprint"

app/src/main/res/values/strings.xml

@@ -662,6 +662,7 @@
     <string name="title_advanced_memory_class" translatable="false">Memory class: %1$s/%2$s Total: %3$s</string>
     <string name="title_advanced_memory_usage" translatable="false">Memory usage: %1$s/%2$s Native: %3$s</string>
     <string name="title_advanced_storage_usage" translatable="false">Storage space: %1$s/%2$s App: %3$s</string>
+    <string name="title_advanced_cursor_window" translatable="false">Cursor window size: %1$s</string>
     <string name="title_advanced_suffixes" translatable="false">Public suffix list: %1$d</string>
     <string name="title_advanced_gc" translatable="false">GC</string>
     <string name="title_advanced_charsets" translatable="false">Charsets</string>