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LibJS: Replace Cell live bit with a cell state

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So far we only have two states: Live and Dead. In the future, we can
add additional states to support incremental sweeping and/or multi-
stage cell destruction.
This commit is contained in:
Andreas Kling 2021-05-25 18:35:27 +02:00
parent 91656d63c7
commit 789d20ebb7
4 changed files with 32 additions and 20 deletions
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13
Userland/Libraries/LibJS/Heap/Cell.h
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@ -26,8 +26,13 @@ public:
bool is_marked() const { return m_mark; }
void set_marked(bool b) { m_mark = b; }
bool is_live() const { return m_live; }
void set_live(bool b) { m_live = b; }
enum class State {
Live,
Dead,
};
State state() const { return m_state; }
void set_state(State state) { m_state = state; }
virtual const char* class_name() const = 0;
@ -54,8 +59,8 @@ protected:
Cell() { }
private:
bool m_mark { false };
bool m_live { true };
bool m_mark : 1 { false };
State m_state : 7 { State::Live };
};
}