the timeout was entirely useless, because:
- when shorter than 25.6 seconds (512 ticks) it would cause caches to be needlessly destroyed and regenerated
- when longer than 25.6 seconds, just made outdated caches persist for longer, even after the query info was regenerated.
This now uses a mark-dirty model to deal with caches, which means that plugin modifications to the query data will be reflected immediately, regardless of when they are made. Previously, modifying the result of Server->getQueryInformation() would have inconsistent results.
This is better for performance because these then don't need to be reevaluated every time they are called.
When encountering an unqualified function or constant reference, PHP will first try to locate a symbol in the current namespace by that name, and then fall back to the global namespace.
This short-circuits the check, which has substantial performance effects in some cases - in particular, ord(), chr() and strlen() show ~1500x faster calls when they are fully qualified.
However, this doesn't mean that PM is getting a massive amount faster. In real world terms, this translates to about 10-15% performance improvement.
But before anyone gets excited, you should know that the CodeOptimizer in the PreProcessor repo has been applying fully-qualified symbol optimizations to Jenkins builds for years, which is one of the reasons why Jenkins builds have better performance than home-built or source installations.
We're choosing to do this for the sake of future SafePHP integration and also to be able to get rid of the buggy CodeOptimizer, so that phar and source are more consistent.
This was observed in a recent crashdump where a plugin triggered a recursion error, but the stack trace did not contain any sign of a recursive event call. I conclude that this must have been caused by previous event handlers triggering errors 50 times in order to make the recursion detection break, because the recursion detection did not decrement the counter in cases where an exception was thrown.
This check is completely unnecessary since handlers get unregistered when a plugin is disabled. Additionally, this is an extremely hot path and this change produces a modest 5% performance improvement to event calls.
This is dependent on the changes made in b1e0f82cbf2f585ed729245a6883d713effd1793. This now makes it possible to call events without fetching a Server reference, allowing to eliminate a vast array of Server dependencies.
* Added a new PermissionManager, remove ridiculous cyclic dependencies of Permissions on Server
Aside from all the other ridiculous design problems with the permission system, the biggest problems are its API. This is, once again, a result of poor API design copied from Bukkit.
This pull request removes all permission-related functionality from `PluginManager` and moves it to the `pocketmine\permission\PermissionManager` class.
As can be observed from the removed code in the diff, the permissions system was previously entirely dependent on the Server, because it needed to get the PluginManager for registering permissions. This is utterly ridiculous. This refactor isolates _most_ permission-related functionality within the `permission` namespace.
As mentioned above, this stupid API is a direct result of copying from Bukkit. If you look at the API documentation for Bukkit for `PluginManager` you will see that the methods I'm deprecating here are also in there.
## Changes
- Added a new `PermissionManager` class. This can be accessed via its singleton `getInstance()` static method.
- Deprecated the following `PluginManager` methods - these will be removed no later than 4.0.0:
- `getPermission()`
- `addPermission()`
- `removePermission()`
- `getDefaultPermissions()`
- `recalculatePermissionDefaults()`
- `subscribeToPermission()`
- `unsubscribeFromPermission()`
- `getPermissionSubscriptions()`
- `subscribeToDefaultPerms()`
- `unsubscribeFromDefaultPerms()`
- `getDefaultPermSubscriptions()`
- `getPermissions()`
PhpStorm can't see these or understand how they are being called, which is very annoying for bug hunting. Additionally, we already have the CodeOptimizer for this.
