diff options
Diffstat (limited to 'src/core/memory.cpp')
| -rw-r--r-- | src/core/memory.cpp | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/src/core/memory.cpp b/src/core/memory.cpp index 70abd856a..e9166dbd9 100644 --- a/src/core/memory.cpp +++ b/src/core/memory.cpp @@ -53,6 +53,14 @@ void PageTable::Resize(std::size_t address_space_width_in_bits) { pointers.resize(num_page_table_entries); attributes.resize(num_page_table_entries); + + // The default is a 39-bit address space, which causes an initial 1GB allocation size. If the + // vector size is subsequently decreased (via resize), the vector might not automatically + // actually reallocate/resize its underlying allocation, which wastes up to ~800 MB for + // 36-bit titles. Call shrink_to_fit to reduce capacity to what's actually in use. + + pointers.shrink_to_fit(); + attributes.shrink_to_fit(); } static void MapPages(PageTable& page_table, VAddr base, u64 size, u8* memory, PageType type) { @@ -117,14 +125,13 @@ void RemoveDebugHook(PageTable& page_table, VAddr base, u64 size, MemoryHookPoin * using a VMA from the current process */ static u8* GetPointerFromVMA(const Kernel::Process& process, VAddr vaddr) { - u8* direct_pointer = nullptr; + const auto& vm_manager = process.VMManager(); - auto& vm_manager = process.VMManager(); + const auto it = vm_manager.FindVMA(vaddr); + DEBUG_ASSERT(vm_manager.IsValidHandle(it)); - auto it = vm_manager.FindVMA(vaddr); - ASSERT(it != vm_manager.vma_map.end()); - - auto& vma = it->second; + u8* direct_pointer = nullptr; + const auto& vma = it->second; switch (vma.type) { case Kernel::VMAType::AllocatedMemoryBlock: direct_pointer = vma.backing_block->data() + vma.offset; @@ -180,6 +187,7 @@ T Read(const VAddr vaddr) { default: UNREACHABLE(); } + return {}; } template <typename T> |