/**
* Try to reserve more bytes.
*
* @param count The number of bytes to add. We will round this up to the page size.
* @return The new number of usedBytes if we succeeded; -1 if we failed.
*/
long reserve(long count) {
count = rounder.round(count);
while (true) {
long cur = usedBytes.get();
long next = cur + count;
if (next > maxBytes) {
return -1;
}
if (usedBytes.compareAndSet(cur, next)) {
return next;
}
}
}
/**
* Release some bytes that we're using.
*
* @param count The number of bytes to release. We will round this up to the page size.
* @return The new number of usedBytes.
*/
long release(long count) {
count = rounder.round(count);
return usedBytes.addAndGet(-count);
}