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// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "core/hle/kernel/k_dynamic_resource_manager.h"
#include "core/hle/kernel/k_memory_manager.h"
#include "core/hle/kernel/k_page_group.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/svc_results.h"
namespace Kernel {
void KPageGroup::Finalize() {
KBlockInfo* cur = m_first_block;
while (cur != nullptr) {
KBlockInfo* next = cur->GetNext();
m_manager->Free(cur);
cur = next;
}
m_first_block = nullptr;
m_last_block = nullptr;
}
void KPageGroup::CloseAndReset() {
auto& mm = m_kernel.MemoryManager();
KBlockInfo* cur = m_first_block;
while (cur != nullptr) {
KBlockInfo* next = cur->GetNext();
mm.Close(cur->GetAddress(), cur->GetNumPages());
m_manager->Free(cur);
cur = next;
}
m_first_block = nullptr;
m_last_block = nullptr;
}
size_t KPageGroup::GetNumPages() const {
size_t num_pages = 0;
for (const auto& it : *this) {
num_pages += it.GetNumPages();
}
return num_pages;
}
Result KPageGroup::AddBlock(KPhysicalAddress addr, size_t num_pages) {
// Succeed immediately if we're adding no pages.
R_SUCCEED_IF(num_pages == 0);
// Check for overflow.
ASSERT(addr < addr + num_pages * PageSize);
// Try to just append to the last block.
if (m_last_block != nullptr) {
R_SUCCEED_IF(m_last_block->TryConcatenate(addr, num_pages));
}
// Allocate a new block.
KBlockInfo* new_block = m_manager->Allocate();
R_UNLESS(new_block != nullptr, ResultOutOfResource);
// Initialize the block.
new_block->Initialize(addr, num_pages);
// Add the block to our list.
if (m_last_block != nullptr) {
m_last_block->SetNext(new_block);
} else {
m_first_block = new_block;
}
m_last_block = new_block;
R_SUCCEED();
}
void KPageGroup::Open() const {
auto& mm = m_kernel.MemoryManager();
for (const auto& it : *this) {
mm.Open(it.GetAddress(), it.GetNumPages());
}
}
void KPageGroup::OpenFirst() const {
auto& mm = m_kernel.MemoryManager();
for (const auto& it : *this) {
mm.OpenFirst(it.GetAddress(), it.GetNumPages());
}
}
void KPageGroup::Close() const {
auto& mm = m_kernel.MemoryManager();
for (const auto& it : *this) {
mm.Close(it.GetAddress(), it.GetNumPages());
}
}
bool KPageGroup::IsEquivalentTo(const KPageGroup& rhs) const {
auto lit = this->begin();
auto rit = rhs.begin();
auto lend = this->end();
auto rend = rhs.end();
while (lit != lend && rit != rend) {
if (*lit != *rit) {
return false;
}
++lit;
++rit;
}
return lit == lend && rit == rend;
}
} // namespace Kernel
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