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authorLioncash <mathew1800@gmail.com>2020-09-15 09:10:55 -0400
committerLioncash <mathew1800@gmail.com>2020-09-15 09:10:58 -0400
commit66fc037ef2181cdddc1588032be18cb368fb3e97 (patch)
treedd29407fa8cb9e61683e3f0250a3d88b55910fdf
parent99b372a6c5c6d42e1c2e36e710e191901973f449 (diff)
nca_patch: Significantly reduce the stack usage size within SearchBucketEntry()
Previously this function was using ~16KB of stack (16528 bytes), which was caused by the function arguments being taken by value rather than by reference. We can make this significantly lighter on the stack by taking them by reference.
-rw-r--r--src/core/file_sys/nca_patch.cpp8
1 files changed, 4 insertions, 4 deletions
diff --git a/src/core/file_sys/nca_patch.cpp b/src/core/file_sys/nca_patch.cpp
index fd7b69e11..5990a2fd5 100644
--- a/src/core/file_sys/nca_patch.cpp
+++ b/src/core/file_sys/nca_patch.cpp
@@ -14,10 +14,10 @@
namespace FileSys {
namespace {
template <bool Subsection, typename BlockType, typename BucketType>
-std::pair<std::size_t, std::size_t> SearchBucketEntry(u64 offset, BlockType block,
- BucketType buckets) {
+std::pair<std::size_t, std::size_t> SearchBucketEntry(u64 offset, const BlockType& block,
+ const BucketType& buckets) {
if constexpr (Subsection) {
- const auto last_bucket = buckets[block.number_buckets - 1];
+ const auto& last_bucket = buckets[block.number_buckets - 1];
if (offset >= last_bucket.entries[last_bucket.number_entries].address_patch) {
return {block.number_buckets - 1, last_bucket.number_entries};
}
@@ -29,7 +29,7 @@ std::pair<std::size_t, std::size_t> SearchBucketEntry(u64 offset, BlockType bloc
block.base_offsets.begin() + 1, block.base_offsets.begin() + block.number_buckets,
[&offset](u64 base_offset) { return base_offset <= offset; });
- const auto bucket = buckets[bucket_id];
+ const auto& bucket = buckets[bucket_id];
if (bucket.number_entries == 1) {
return {bucket_id, 0};