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Add a new HashMap implementation

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Adds a new, cleaned up, HashMap implementation.

* Uses Robin Hood Hashing (https://en.wikipedia.org/wiki/Hash_table#Robin_Hood_hashing).
* Keeps elements in a double linked list for simpler, ordered, iteration.
* Allows keeping iterators for later use in removal (Unlike Map<>, it does not do much
  for performance vs keeping the key, but helps replace old code).
* Uses a more modern C++ iterator API, deprecates the old one.
* Supports custom allocator (in case there is a wish to use a paged one).

This class aims to unify all the associative template usage and replace it by this one:
* Map<> (whereas key order does not matter, which is 99% of cases)
* HashMap<>
* OrderedHashMap<>
* OAHashMap<>
This commit is contained in:
reduz
2022-05-08 10:09:19 +02:00
committed by Rémi Verschelde
parent 9b7e16a6b8
commit 8b7c7f5a75
95 changed files with 1434 additions and 1874 deletions
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4
main/performance.h
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@ -32,7 +32,7 @@
#define PERFORMANCE_H
#include "core/object/class_db.h"
#include "core/templates/ordered_hash_map.h"
#include "core/templates/hash_map.h"
#define PERF_WARN_OFFLINE_FUNCTION
#define PERF_WARN_PROCESS_SYNC
@ -58,7 +58,7 @@ class Performance : public Object {
Variant call(bool &r_error, String &r_error_message);
};
OrderedHashMap<StringName, MonitorCall> _monitor_map;
HashMap<StringName, MonitorCall> _monitor_map;
uint64_t _monitor_modification_time;
public: