Rewrite chunk system (#8177)

Patch documentation to come

Issues with the old system that are fixed now:
- World generation does not scale with cpu cores effectively.
- Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps.
- Unreliable prioritisation of chunk gen/load calls that block the main thread.
- Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved.
- Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal.
- Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles.

The above list is not complete. The patch documentation will complete it.

New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil.

Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft.

The old legacy chunk system patches have been moved to the removed folder in case we need them again.

1 files changed, 47 insertions, 0 deletions

diff --git a/patches/server/0415-Add-option-for-console-having-all-permissions.patch b/patches/server/0415-Add-option-for-console-having-all-permissions.patch
new file mode 100644
index 0000000000..d1e3317d94
--- /dev/null
+++ b/patches/server/0415-Add-option-for-console-having-all-permissions.patch
@@ -0,0 +1,47 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Mariell Hoversholm <[email protected]>
+Date: Sat, 16 May 2020 10:12:15 +0200
+Subject: [PATCH] Add option for console having all permissions
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/command/CraftConsoleCommandSender.java b/src/main/java/org/bukkit/craftbukkit/command/CraftConsoleCommandSender.java
+index 324e6d1a4fadd3e557e4ba05f04e6a5891cc54df..4e56018b64d11f76c8da43fd8f85c6de72204e36 100644
+--- a/src/main/java/org/bukkit/craftbukkit/command/CraftConsoleCommandSender.java
++++ b/src/main/java/org/bukkit/craftbukkit/command/CraftConsoleCommandSender.java
+@@ -93,5 +93,15 @@ public class CraftConsoleCommandSender extends ServerCommandSender implements Co
+     public void sendMessage(final net.kyori.adventure.identity.Identity identity, final net.kyori.adventure.text.Component message, final net.kyori.adventure.audience.MessageType type) {
+         this.sendRawMessage(net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.legacySection().serialize(message));
+     }
++
++    @Override
++    public boolean hasPermission(String name) {
++        return io.papermc.paper.configuration.GlobalConfiguration.get().console.hasAllPermissions || super.hasPermission(name);
++    }
++
++    @Override
++    public boolean hasPermission(org.bukkit.permissions.Permission perm) {
++        return io.papermc.paper.configuration.GlobalConfiguration.get().console.hasAllPermissions || super.hasPermission(perm);
++    }
+     // Paper end
+ }
+diff --git a/src/main/java/org/bukkit/craftbukkit/command/CraftRemoteConsoleCommandSender.java b/src/main/java/org/bukkit/craftbukkit/command/CraftRemoteConsoleCommandSender.java
+index a6612cc0ea87aeb8e87521ff7b5fe58c7b06b9ef..dfc15cfd897316f64a063b8ae93a0882ab5b3993 100644
+--- a/src/main/java/org/bukkit/craftbukkit/command/CraftRemoteConsoleCommandSender.java
++++ b/src/main/java/org/bukkit/craftbukkit/command/CraftRemoteConsoleCommandSender.java
+@@ -45,4 +45,16 @@ public class CraftRemoteConsoleCommandSender extends ServerCommandSender impleme
+     public void setOp(boolean value) {
+         throw new UnsupportedOperationException("Cannot change operator status of remote controller.");
+     }
++
++    // Paper start
++    @Override
++    public boolean hasPermission(String name) {
++        return io.papermc.paper.configuration.GlobalConfiguration.get().console.hasAllPermissions || super.hasPermission(name);
++    }
++
++    @Override
++    public boolean hasPermission(org.bukkit.permissions.Permission perm) {
++        return io.papermc.paper.configuration.GlobalConfiguration.get().console.hasAllPermissions || super.hasPermission(perm);
++    }
++    // Paper end
+ }