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AtomicBoolean stores its value in:
private volatile int value;
Then, for example, extracting its value is done like this:
public final boolean get() {
return value != 0;
}
What is the reason behind it? Why boolean was not used?
AFAIK,
intis the smallest type CAS operations can be implemented across different machine types.Note: as object allocations are 8 byte aligned, using a smaller type wouldn’t save any memory.