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protected class ContainerBackgroundProcessor implements Runnable {
public void run() {
while (!threadDone) {
try {
Thread.sleep(backgroundProcessorDelay * 1000L);
} catch (InterruptedException e) {
;
}
if (!threadDone) {
Container parent = (Container) getMappingObject();//得到StandardEngine
ClassLoader cl =
Thread.currentThread().getContextClassLoader();
if (parent.getLoader() != null) {
cl = parent.getLoader().getClassLoader();
}
processChildren(parent, cl);
}
}
}
protected void processChildren(Container container, ClassLoader cl) {
try {
if (container.getLoader() != null) {
Thread.currentThread().setContextClassLoader
(container.getLoader().getClassLoader());
}
container.backgroundProcess();
} catch (Throwable t) {
log.error("Exception invoking periodic operation: ", t);
} finally {
Thread.currentThread().setContextClassLoader(cl);
}
Container[] children = container.findChildren();
for (int i = 0; i < children.length; i++) {
if (children.getBackgroundProcessorDelay() |
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