public Slot allocateSlot(int length) {
if (length <= 0) {
throw new IllegalArgumentException();
}
if (_freespaceManager != null && _freespaceManager.isStarted()) {
Slot slot = _freespaceManager.allocateSlot(length);
if (slot != null) {
if (DTrace.enabled) {
DTrace.GET_SLOT.logLength(slot.address(), slot.length());
}
return slot;
}
while (growDatabaseByConfiguredSize()) {
slot = _freespaceManager.allocateSlot(length);
if (slot != null) {
if (DTrace.enabled) {
DTrace.GET_SLOT.logLength(slot.address(), slot.length());
}
return slot;
}
}
}
Slot appendedSlot = appendBytes(length);
if (DTrace.enabled) {
DTrace.GET_SLOT.logLength(appendedSlot.address(), appendedSlot.length());
}
return appendedSlot;
}
