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11 package psiprobe;
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13 import jakarta.servlet.ServletContextEvent;
14 import jakarta.servlet.ServletContextListener;
15 import jakarta.servlet.annotation.WebListener;
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17 import javax.imageio.ImageIO;
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19 import org.slf4j.Logger;
20 import org.slf4j.LoggerFactory;
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29 @WebListener
30 public class AwtAppContextClassloaderListener implements ServletContextListener {
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33 private static final Logger logger =
34 LoggerFactory.getLogger(AwtAppContextClassloaderListener.class);
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42 @Override
43 public void contextInitialized(ServletContextEvent sce) {
44 try {
45 final ClassLoader active = Thread.currentThread().getContextClassLoader();
46 try {
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48 ClassLoader root = active;
49 while (root.getParent() != null) {
50 root = root.getParent();
51 }
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53 Thread.currentThread().setContextClassLoader(root);
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60 ImageIO.getCacheDirectory();
61 } finally {
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63 Thread.currentThread().setContextClassLoader(active);
64 }
65 logger.info("AwtAppContextClassloaderListener Initialized");
66 } catch (Exception e) {
67 logger.error("Failed to address PermGen leak.", e);
68 }
69 }
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71 @Override
72 public void contextDestroyed(ServletContextEvent sce) {
73
74 }
75
76 }