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| author | Mat M <mathew1800@gmail.com> | 2018-12-06 00:36:47 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-12-06 00:36:47 +0100 |
| commit | 4d3d2fcebde1cb2347b4da83471d01858da7f958 (patch) | |
| tree | 49af54eeeb307b198737a7562369a676e5fd6be7 /src/core | |
| parent | Merge pull request #1859 from heapo/lut_array_codegen (diff) | |
| parent | Call shrink_to_fit after page-table vector resizing to cause crt to actually lower vector capacity. For 36-bit titles saves 800MB of commit. (diff) | |
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Diffstat (limited to 'src/core')
| -rw-r--r-- | src/core/memory.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/core/memory.cpp b/src/core/memory.cpp index 70abd856a..41fd2a6a0 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) { |