synchronized block -> getCrashInfo -> join -> synchronized on the same
context on the child thread -> deadlock
instead we check for isTerminated and then get the crash info outside
of the synchronized block.
this has bothered me for ages since it sorts into some absurd order by default due to the name starting with the day of the week.
this way it'll ensure that the files are always alphanumerically ordered, which means the most recent crashdump should always be
at the bottom.
MS is due to remove the non-server-auth versions of all of this stuff.
Fortunately v3 server auth movement works just fine without any changes,
although we will need to start sending player tick in some packets if
someone wants to actually use the rewind stuff.
these would previously generate a new line for every error.
since errors are often repeated for different offsets (e.g. different states of the same block),
we can save a lot of spam by deduplicating them and telling which offsets the errors occurred in.
this can happen if the old item had a lower max damage than the new one, and the new
one has a damage higher than the old one's max damage.
it can also happen if the damage was overridden to some illegal value by a custom item
as seen in https://crash.pmmp.io/view/12754811
fixes#6709
we really need a better way to reverse-engineer the chance parameter for these
as the wiki just gives a probability table, which is quite tiresome to extract
patterns from.
PlayerRespawnAnchorUseEvent is also added with options SET_SPAWN and EXPLODE, which allows plugins to customise the outcome of using the anchor in PM, which currently doesn't support dimensions. The event is also cancellable.
- `AsyncGeneratorExecutor` class added that encapsulates the logic of generating chunks using async tasks as previously
- `GeneratorExecutor` interface added that can be implemented to provide chunks in other ways
- `SyncGeneratorExecutor` which invokes the generator directly on the main thread, useful for simple generators like `Flat` where async tasks are not needed
- Some redundant APIs were removed from `World` (these will probably come back as deprecated stubs for the remainder of 5.x, but I was having too much fun deleting code)
- Removed internal `World->registerGeneratorToWorker()` (no longer useful)
- `World` now invokes generator executor instead of posting AsyncTasks directly
- Some internal classes moved to `pocketmine\world\generator\executor` (PopulationTask excluded because plugins use it in lieu of being able to regenerate chunks
- Generators can opt into main-thread execution by setting the `$fast` parameter to `true` in `GeneratorManager::register()`
closes#6669
this happens because isTerminated returns true before the thread's shutdown handler runs,
so we join with the thread to make sure that shutdown handlers are done before returning.
... hopefully we don't get servers randomly deadlocking in shutdown handlers ???
