ARTICLE AD BOX
// transfer 2463line
if (i < 0 || i >= n || i + n >= nextn) { ********* here
int sc;
if (finishing) {
nextTable = null;
table = nextTab;
sizeCtl = (n << 1) - (n >>> 1);
return;
}
if (U.compareAndSetInt(this, SIZECTL, sc = sizeCtl, sc - 1)) {
if ((sc - 2) != resizeStamp(n) << RESIZE_STAMP_SHIFT)
return;
finishing = advance = true;
i = n; // recheck before commit
}
}
Condition 1, "i < 0", I can understand it.
Condition 2, "i >= n", I can't think of a special case; it feels like it can't happen.
Condition 3, "i + n >= nextn", is the same.
Are conditions 2 and 3 for defensive programming?
Thanks！！！
