From 0727bfd98ca31b0d93298de27a0c15fa5cdbadde Mon Sep 17 00:00:00 2001
From: Matthias Jaros <jarlucmat@mailbox.org>
Date: Sat, 4 Jul 2026 12:29:15 +0200
Subject: Fix memory hole in quiet mode at ProgressBar

---
 src/main/java/com/it_jaros/jscanner/ProgressBar.java | 17 ++++++++++-------
 src/main/java/com/it_jaros/jscanner/Scanner.java     |  1 -
 2 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/src/main/java/com/it_jaros/jscanner/ProgressBar.java b/src/main/java/com/it_jaros/jscanner/ProgressBar.java
index 3300b73..fb22c4c 100644
--- a/src/main/java/com/it_jaros/jscanner/ProgressBar.java
+++ b/src/main/java/com/it_jaros/jscanner/ProgressBar.java
@@ -47,10 +47,12 @@ public class ProgressBar {
     }
 
     public void start() {
-        if (quiet) {
-            return;
+        if (!quiet) {
+            System.out.print("Scanning targets...\n\n");
         }
-        System.out.print("Scanning targets...\n\n");
+
+        // although we don't print anything, we still need to
+        // gc all the done hosts
         ui.scheduleAtFixedRate(() -> {
             lock.lock();
             drawProgress(false);
@@ -76,7 +78,9 @@ public class ProgressBar {
 
         if (!last) {
             // move cursor up again
-            System.out.print("\u001b[" + hosts.size() + "A");
+            if (!quiet) {
+                System.out.print("\u001b[" + hosts.size() + "A");
+            }
         }
     }
 
@@ -87,6 +91,7 @@ public class ProgressBar {
     }
 
     private void drawBar(Progress progress) {
+        if (quiet) return;
         System.out.print("\u001b[2K\r"); // clear whole line
         System.out.println(createBar(
                 progress.host(),
@@ -116,9 +121,7 @@ public class ProgressBar {
         try {
             ui.awaitTermination(1, TimeUnit.SECONDS);
             // we need to draw one last time for the 100% to appear
-            if (!quiet) {
-                drawProgress(true);
-            }
+            drawProgress(true);
         } catch (InterruptedException ignored) {
             Thread.currentThread().interrupt();
         }
diff --git a/src/main/java/com/it_jaros/jscanner/Scanner.java b/src/main/java/com/it_jaros/jscanner/Scanner.java
index bfb7ac6..fc4755e 100644
--- a/src/main/java/com/it_jaros/jscanner/Scanner.java
+++ b/src/main/java/com/it_jaros/jscanner/Scanner.java
@@ -7,7 +7,6 @@ import java.nio.charset.StandardCharsets;
 import java.time.Duration;
 import java.util.*;
 import java.util.concurrent.*;
-import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicLong;
 import java.util.concurrent.locks.LockSupport;
-- 
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