core: hle: kernel: k_page_group: Add KPageBufferSlabHeap.

This commit is contained in:
bunnei 2022-10-29 13:49:09 -07:00
parent d353c45f7d
commit 6257461684

View file

@ -5,6 +5,7 @@
#include <list>
#include "common/alignment.h"
#include "common/assert.h"
#include "common/common_types.h"
#include "core/hle/kernel/memory_types.h"
@ -12,6 +13,89 @@
namespace Kernel {
class KPageGroup;
class KBlockInfo {
private:
friend class KPageGroup;
public:
constexpr KBlockInfo() = default;
constexpr void Initialize(PAddr addr, size_t np) {
ASSERT(Common::IsAligned(addr, PageSize));
ASSERT(static_cast<u32>(np) == np);
m_page_index = static_cast<u32>(addr) / PageSize;
m_num_pages = static_cast<u32>(np);
}
constexpr PAddr GetAddress() const {
return m_page_index * PageSize;
}
constexpr size_t GetNumPages() const {
return m_num_pages;
}
constexpr size_t GetSize() const {
return this->GetNumPages() * PageSize;
}
constexpr PAddr GetEndAddress() const {
return (m_page_index + m_num_pages) * PageSize;
}
constexpr PAddr GetLastAddress() const {
return this->GetEndAddress() - 1;
}
constexpr KBlockInfo* GetNext() const {
return m_next;
}
constexpr bool IsEquivalentTo(const KBlockInfo& rhs) const {
return m_page_index == rhs.m_page_index && m_num_pages == rhs.m_num_pages;
}
constexpr bool operator==(const KBlockInfo& rhs) const {
return this->IsEquivalentTo(rhs);
}
constexpr bool operator!=(const KBlockInfo& rhs) const {
return !(*this == rhs);
}
constexpr bool IsStrictlyBefore(PAddr addr) const {
const PAddr end = this->GetEndAddress();
if (m_page_index != 0 && end == 0) {
return false;
}
return end < addr;
}
constexpr bool operator<(PAddr addr) const {
return this->IsStrictlyBefore(addr);
}
constexpr bool TryConcatenate(PAddr addr, size_t np) {
if (addr != 0 && addr == this->GetEndAddress()) {
m_num_pages += static_cast<u32>(np);
return true;
}
return false;
}
private:
constexpr void SetNext(KBlockInfo* next) {
m_next = next;
}
private:
KBlockInfo* m_next{};
u32 m_page_index{};
u32 m_num_pages{};
};
static_assert(sizeof(KBlockInfo) <= 0x10);
class KPageGroup final {
public:
class Node final {
@ -92,6 +176,8 @@ public:
return nodes.empty();
}
void Finalize() {}
private:
std::list<Node> nodes;
};