this resulted in a deadlock in https://github.com/pmmp/PocketMine-MP/runs/1831812620?check_suite_focus=true because the notify() arrived while writeLogStream() was executing.
This ensures that either:
- the notification will occur before the sleep, and therefore no sleeping will occur (this->shutdown = true before the wait)
- the notification will arrive during the sleep.
variadics are a bad fit for this because what we really need is to accept callable with any number of arguments. LSP requires that the provided number of arguments must be >= than the required number of arguments.
clickPos is relative to the base block position, so if you keep aiming at the same spot on the block and jump, it thinks you're still spamming.
closes#2730
we don't need to scan the parent classes for anything other than private properties, because protected and public properties will appear on the main reflection as if they were declared directly as such.
this provides some performance improvement (although it's difficult to measure because of cache).
this does mean that we read some garbage data during chunk reads, but it's less costly than hitting the disk twice.
I was unaware that fseek actually makes a syscall which is rather costly, which became painfully obvious during large world conversions on PM4.
On average this problem appeared to be adding about 5ms to the load time for a newly loaded region, which is insanely expensive.
In the old days, we used to try to correct this problem by adjusting the region header to match the
length found at the start of the chunk payload. However, this has a very good chance to cause corruption
of other chunks, since we can't do any fast overlap checks (an upsize might cause the chunk's alloocated
area to overlap into another one, causing corruption when either chunk's space gets written to).
This corruption risk has become more problematic since the
introduction of region garbage sector reuse, since a broken location
header could cause chunks to trash each others' saved data.
In addition, if there is a length mismatch, there's a good chance that the oversized chunk itself will
already be corrupted, so we'd just fail trying to decompress it later on.
So, instead of trying to fix this automatically, we bail and hope this doesn't occur often enough for
users to get upset, and allow external offline tools to attempt to repair the mess instead.
