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Replace zones with individually tracked physical pages.

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It's just a simple struct { ref_count, paddr }.
This will allow me to implement lazy zeroing and COW pages.
This commit is contained in:
Andreas Kling 2018-11-05 10:23:00 +01:00
parent b5c5286ee1
commit 72cdc62155
10 changed files with 161 additions and 127 deletions
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3
AK/RetainPtr.h
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@ -32,6 +32,7 @@ public:
RetainPtr(RetainPtr& other) : m_ptr(other.copyRef().leakRef()) { }
RetainPtr(RetainPtr&& other) : m_ptr(other.leakRef()) { }
template<typename U> RetainPtr(RetainPtr<U>&& other) : m_ptr(static_cast<T*>(other.leakRef())) { }
RetainPtr(const RetainPtr& other) : m_ptr(const_cast<RetainPtr&>(other).copyRef().leakRef()) { }
~RetainPtr()
{
clear();
@ -121,6 +122,8 @@ public:
operator bool() { return !!m_ptr; }
bool is_null() const { return !m_ptr; }
private:
T* m_ptr = nullptr;
};