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Kernel: Use NonnullRefPtrVector in parts of the kernel.

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This commit is contained in:
Andreas Kling 2019-06-27 13:34:28 +02:00
parent e2b8a2315e
commit 601b0a8c68
Notes: sideshowbarker 2024-07-19 13:28:28 +09:00
5 changed files with 65 additions and 69 deletions
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50
Kernel/VM/MemoryManager.cpp
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@ -79,7 +79,7 @@ void MemoryManager::initialize_paging()
#endif
m_quickmap_addr = VirtualAddress((1 * MB) - PAGE_SIZE);
RefPtr<PhysicalRegion> region = nullptr;
RefPtr<PhysicalRegion> region;
bool region_is_super = false;
for (auto* mmap = (multiboot_memory_map_t*)multiboot_info_ptr->mmap_addr; (unsigned long)mmap < multiboot_info_ptr->mmap_addr + multiboot_info_ptr->mmap_length; mmap = (multiboot_memory_map_t*)((unsigned long)mmap + mmap->size + sizeof(mmap->size))) {
@ -118,7 +118,7 @@ void MemoryManager::initialize_paging()
} else {
if (region.is_null() || region_is_super || region->upper().offset(PAGE_SIZE) != addr) {
m_user_physical_regions.append(PhysicalRegion::create(addr, addr));
region = m_user_physical_regions.last();
region = &m_user_physical_regions.last();
region_is_super = false;
} else {
region->expand(region->lower(), addr);
@ -128,10 +128,10 @@ void MemoryManager::initialize_paging()
}
for (auto& region : m_super_physical_regions)
m_super_physical_pages += region->finalize_capacity();
m_super_physical_pages += region.finalize_capacity();
for (auto& region : m_user_physical_regions)
m_user_physical_pages += region->finalize_capacity();
m_user_physical_pages += region.finalize_capacity();
#ifdef MM_DEBUG
dbgprintf("MM: Installing page directory\n");
@ -268,8 +268,8 @@ Region* MemoryManager::region_from_vaddr(Process& process, VirtualAddress vaddr)
// FIXME: Use a binary search tree (maybe red/black?) or some other more appropriate data structure!
for (auto& region : process.m_regions) {
if (region->contains(vaddr))
return region.ptr();
if (region.contains(vaddr))
return &region;
}
dbgprintf("%s(%u) Couldn't find region for L%x (CR3=%x)\n", process.name().characters(), process.pid(), vaddr.get(), process.page_directory().cr3());
return nullptr;
@ -286,8 +286,8 @@ const Region* MemoryManager::region_from_vaddr(const Process& process, VirtualAd
// FIXME: Use a binary search tree (maybe red/black?) or some other more appropriate data structure!
for (auto& region : process.m_regions) {
if (region->contains(vaddr))
return region.ptr();
if (region.contains(vaddr))
return &region;
}
dbgprintf("%s(%u) Couldn't find region for L%x (CR3=%x)\n", process.name().characters(), process.pid(), vaddr.get(), process.page_directory().cr3());
return nullptr;
@ -467,15 +467,15 @@ RefPtr<Region> MemoryManager::allocate_kernel_region(size_t size, String&& name)
void MemoryManager::deallocate_user_physical_page(PhysicalPage&& page)
{
for (auto& region : m_user_physical_regions) {
if (!region->contains(page)) {
if (!region.contains(page)) {
kprintf(
"MM: deallocate_user_physical_page: %p not in %p -> %p\n",
page.paddr(), region->lower().get(), region->upper().get());
page.paddr(), region.lower().get(), region.upper().get());
continue;
}
region->return_page(move(page));
m_user_physical_pages_used--;
region.return_page(move(page));
--m_user_physical_pages_used;
return;
}
@ -487,11 +487,10 @@ void MemoryManager::deallocate_user_physical_page(PhysicalPage&& page)
RefPtr<PhysicalPage> MemoryManager::allocate_user_physical_page(ShouldZeroFill should_zero_fill)
{
InterruptDisabler disabler;
RefPtr<PhysicalPage> page = nullptr;
RefPtr<PhysicalPage> page;
for (auto& region : m_user_physical_regions) {
page = region->take_free_page(false);
page = region.take_free_page(false);
if (page.is_null())
continue;
}
@ -516,24 +515,22 @@ RefPtr<PhysicalPage> MemoryManager::allocate_user_physical_page(ShouldZeroFill s
unquickmap_page();
}
m_user_physical_pages_used++;
++m_user_physical_pages_used;
return page;
}
void MemoryManager::deallocate_supervisor_physical_page(PhysicalPage&& page)
{
for (auto& region : m_super_physical_regions) {
if (!region->contains(page)) {
if (!region.contains(page)) {
kprintf(
"MM: deallocate_supervisor_physical_page: %p not in %p -> %p\n",
page.paddr(), region->lower().get(), region->upper().get());
page.paddr(), region.lower().get(), region.upper().get());
continue;
}
region->return_page(move(page));
m_super_physical_pages_used--;
region.return_page(move(page));
--m_super_physical_pages_used;
return;
}
@ -544,11 +541,10 @@ void MemoryManager::deallocate_supervisor_physical_page(PhysicalPage&& page)
RefPtr<PhysicalPage> MemoryManager::allocate_supervisor_physical_page()
{
InterruptDisabler disabler;
RefPtr<PhysicalPage> page = nullptr;
RefPtr<PhysicalPage> page;
for (auto& region : m_super_physical_regions) {
page = region->take_free_page(true);
page = region.take_free_page(true);
if (page.is_null())
continue;
}
@ -568,9 +564,7 @@ RefPtr<PhysicalPage> MemoryManager::allocate_supervisor_physical_page()
#endif
fast_dword_fill((dword*)page->paddr().as_ptr(), 0, PAGE_SIZE / sizeof(dword));
m_super_physical_pages_used++;
++m_super_physical_pages_used;
return page;
}