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LibJS: Keep track of PrimitiveStrings and share them
VM now has a string cache which tracks all live PrimitiveStrings and reuses an existing one if possible. This drastically reduces the number of GC-allocated strings in many real-word situations.
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3 changed files with 13 additions and 1 deletions
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@ -81,6 +81,7 @@ public:
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Symbol* get_global_symbol(const String& description);
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HashMap<String, PrimitiveString*>& string_cache() { return m_string_cache; }
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PrimitiveString& empty_string() { return *m_empty_string; }
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PrimitiveString& single_ascii_character_string(u8 character)
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{
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@ -294,6 +295,8 @@ private:
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Exception* m_exception { nullptr };
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HashMap<String, PrimitiveString*> m_string_cache;
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Heap m_heap;
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Vector<Interpreter*> m_interpreters;
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