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8024867: Enhance logging start up

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Reviewed-by: mchung, hawtin
This commit is contained in:
Daniel Fuchs 2013-10-07 12:09:22 +02:00
parent 8b89580a17
commit 61e7dbb67e
1 changed files with 18 additions and 0 deletions
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18
jdk/src/share/classes/java/util/logging/LogManager.java
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@ -241,6 +241,11 @@ public class LogManager {
* retrieved by calling LogManager.getLogManager.
*/
protected LogManager() {
this(checkSubclassPermissions());
}
private LogManager(Void checked) {
// Add a shutdown hook to close the global handlers.
try {
Runtime.getRuntime().addShutdownHook(new Cleaner());
@ -250,6 +255,19 @@ public class LogManager {
}
}
private static Void checkSubclassPermissions() {
final SecurityManager sm = System.getSecurityManager();
if (sm != null) {
// These permission will be checked in the LogManager constructor,
// in order to register the Cleaner() thread as a shutdown hook.
// Check them here to avoid the penalty of constructing the object
// etc...
sm.checkPermission(new RuntimePermission("shutdownHooks"));
sm.checkPermission(new RuntimePermission("setContextClassLoader"));
}
return null;
}
/**
* Lazy initialization: if this instance of manager is the global
* manager then this method will read the initial configuration and