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LibJS+Clients: Add JS::VM object, separate Heap from Interpreter
Taking a big step towards a world of multiple global object, this patch adds a new JS::VM object that houses the JS::Heap. This means that the Heap moves out of Interpreter, and the same Heap can now be used by multiple Interpreters, and can also outlive them. The VM keeps a stack of Interpreter pointers. We push/pop on this stack when entering/exiting execution with a given Interpreter. This allows us to make this change without disturbing too much of the existing code. There is still a 1-to-1 relationship between Interpreter and the global object. This will change in the future. Ultimately, the goal here is to make Interpreter a transient object that only needs to exist while you execute some code. Getting there will take a lot more work though. :^) Note that in LibWeb, the global JS::VM is called main_thread_vm(), to distinguish it from future worker VM's.
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13 changed files with 218 additions and 27 deletions
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@ -119,6 +119,7 @@ class Statement;
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class Symbol;
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class Token;
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class Uint8ClampedArray;
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class VM;
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class Value;
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enum class DeclarationKind;
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