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Code Issues Releases Wiki Activity

* allow running with restricted permissions

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This commit is contained in:
Reinhard Pointner 2011-12-31 10:45:22 +00:00
parent bd64b0303b
commit 6874f44b86
1 changed files with 19 additions and 7 deletions
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26
source/net/sourceforge/tuned/Timer.java
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@ -6,6 +6,8 @@ import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;
import java.util.logging.Level;
import java.util.logging.Logger;
public abstract class Timer implements Runnable {
@ -16,7 +18,7 @@ public abstract class Timer implements Runnable {
private ScheduledFuture<?> scheduledFuture;
private Thread shutdownHook;
public synchronized void set(long delay, TimeUnit unit, boolean runBeforeShutdown) {
// create executor if necessary
if (executor == null) {
@ -31,7 +33,12 @@ public abstract class Timer implements Runnable {
Runnable runnable = this;
if (runBeforeShutdown) {
addShutdownHook();
try {
addShutdownHook();
} catch (Exception e) {
// may fail if running with restricted permissions
Logger.getLogger(getClass().getName()).log(Level.WARNING, e.getClass().getName() + ": " + e.getMessage());
}
// remove shutdown hook after execution
runnable = new Runnable() {
@ -46,14 +53,19 @@ public abstract class Timer implements Runnable {
}
};
} else {
// remove existing shutdown hook, if any
removeShutdownHook();
try {
// remove existing shutdown hook, if any
removeShutdownHook();
} catch (Exception e) {
// may fail if running with restricted permissions
Logger.getLogger(getClass().getName()).log(Level.WARNING, e.getClass().getName() + ": " + e.getMessage());
}
}
scheduledFuture = executor.schedule(runnable, delay, unit);
}
public synchronized void cancel() {
removeShutdownHook();
@ -64,7 +76,7 @@ public abstract class Timer implements Runnable {
executor = null;
}
private synchronized void addShutdownHook() {
if (shutdownHook == null) {
shutdownHook = new Thread(this);
@ -72,7 +84,7 @@ public abstract class Timer implements Runnable {
}
}
private synchronized void removeShutdownHook() {
if (shutdownHook != null) {
try {