Today, when I read the source code of
org.apache.derby.impl.store.raw.data.CachedPage.java,
I found some synchronized code like:
public boolean isDirty() {
synchronized (this) {
return isDirty || preDirty;
}
}
public boolean isActuallyDirty() {
synchronized (this) {
return isDirty;
}
}
I have two questions about them, hope someone can answer me:
1. Is it necessary to synchronize the code in these places?
2. I saw someone else commented on some code (in derby) said it's not
good to return from inside of a synchronized block. What potential
problem
it will cause if return from inside of a synchronized block?
Raymond
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