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authorheapo <heapo3@gmail.com>2018-12-05 19:30:50 +0100
committerheapo <heapo3@gmail.com>2018-12-05 23:40:56 +0100
commitca8ab1bc3b4ac200243712998b1d04c557912caa (patch)
tree49af54eeeb307b198737a7562369a676e5fd6be7
parentMerge pull request #1859 from heapo/lut_array_codegen (diff)
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-rw-r--r--src/core/memory.cpp8
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) {