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Merge pull request #11774 from liamwhite/refcount-issue 

fsmitm_romfsbuild: avoid unnecessary copies of vfs pointers
master
liamwhite 2023-10-17 11:49:11 +07:00 committed by GitHub
parent fa56518f20 053a16799e
commit bd05ace08d
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GPG Key ID: 4AEE18F83AFDEB23
10 changed files with 80 additions and 88 deletions
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7
src/core/core.cpp
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@ -116,11 +116,8 @@ FileSys::VirtualFile GetGameFileFromPath(const FileSys::VirtualFilesystem& vfs,
}
}
if (concat.empty()) {
return nullptr;
}
return FileSys::ConcatenatedVfsFile::MakeConcatenatedFile(concat, dir->GetName());
return FileSys::ConcatenatedVfsFile::MakeConcatenatedFile(dir->GetName(),
std::move(concat));
}
if (Common::FS::IsDir(path)) {

90
src/core/file_sys/fsmitm_romfsbuild.cpp
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@ -107,62 +107,56 @@ static u64 romfs_get_hash_table_count(u64 num_entries) {
void RomFSBuildContext::VisitDirectory(VirtualDir romfs_dir, VirtualDir ext_dir,
std::shared_ptr<RomFSBuildDirectoryContext> parent) {
std::vector<std::shared_ptr<RomFSBuildDirectoryContext>> child_dirs;
for (auto& child_romfs_file : romfs_dir->GetFiles()) {
const auto name = child_romfs_file->GetName();
const auto child = std::make_shared<RomFSBuildFileContext>();
// Set child's path.
child->cur_path_ofs = parent->path_len + 1;
child->path_len = child->cur_path_ofs + static_cast<u32>(name.size());
child->path = parent->path + "/" + name;
const auto entries = romfs_dir->GetEntries();
if (ext_dir != nullptr && ext_dir->GetFile(name + ".stub") != nullptr) {
continue;
}
for (const auto& kv : entries) {
if (kv.second == VfsEntryType::Directory) {
const auto child = std::make_shared<RomFSBuildDirectoryContext>();
// Set child's path.
child->cur_path_ofs = parent->path_len + 1;
child->path_len = child->cur_path_ofs + static_cast<u32>(kv.first.size());
child->path = parent->path + "/" + kv.first;
// Sanity check on path_len
ASSERT(child->path_len < FS_MAX_PATH);
if (ext_dir != nullptr && ext_dir->GetFile(kv.first + ".stub") != nullptr) {
continue;
}
child->source = std::move(child_romfs_file);
// Sanity check on path_len
ASSERT(child->path_len < FS_MAX_PATH);
if (AddDirectory(parent, child)) {
child_dirs.push_back(child);
}
} else {
const auto child = std::make_shared<RomFSBuildFileContext>();
// Set child's path.
child->cur_path_ofs = parent->path_len + 1;
child->path_len = child->cur_path_ofs + static_cast<u32>(kv.first.size());
child->path = parent->path + "/" + kv.first;
if (ext_dir != nullptr && ext_dir->GetFile(kv.first + ".stub") != nullptr) {
continue;
}
// Sanity check on path_len
ASSERT(child->path_len < FS_MAX_PATH);
child->source = romfs_dir->GetFile(kv.first);
if (ext_dir != nullptr) {
if (const auto ips = ext_dir->GetFile(kv.first + ".ips")) {
if (auto patched = PatchIPS(child->source, ips)) {
child->source = std::move(patched);
}
if (ext_dir != nullptr) {
if (const auto ips = ext_dir->GetFile(name + ".ips")) {
if (auto patched = PatchIPS(child->source, ips)) {
child->source = std::move(patched);
}
}
child->size = child->source->GetSize();
AddFile(parent, child);
}
child->size = child->source->GetSize();
AddFile(parent, child);
}
for (auto& child : child_dirs) {
auto subdir_name = std::string_view(child->path).substr(child->cur_path_ofs);
auto child_romfs_dir = romfs_dir->GetSubdirectory(subdir_name);
auto child_ext_dir = ext_dir != nullptr ? ext_dir->GetSubdirectory(subdir_name) : nullptr;
for (auto& child_romfs_dir : romfs_dir->GetSubdirectories()) {
const auto name = child_romfs_dir->GetName();
const auto child = std::make_shared<RomFSBuildDirectoryContext>();
// Set child's path.
child->cur_path_ofs = parent->path_len + 1;
child->path_len = child->cur_path_ofs + static_cast<u32>(name.size());
child->path = parent->path + "/" + name;
if (ext_dir != nullptr && ext_dir->GetFile(name + ".stub") != nullptr) {
continue;
}
// Sanity check on path_len
ASSERT(child->path_len < FS_MAX_PATH);
if (!AddDirectory(parent, child)) {
continue;
}
auto child_ext_dir = ext_dir != nullptr ? ext_dir->GetSubdirectory(name) : nullptr;
this->VisitDirectory(child_romfs_dir, child_ext_dir, child);
}
}
@ -293,7 +287,7 @@ std::multimap<u64, VirtualFile> RomFSBuildContext::Build() {
cur_entry.name_size = name_size;
out.emplace(cur_file->offset + ROMFS_FILEPARTITION_OFS, cur_file->source);
out.emplace(cur_file->offset + ROMFS_FILEPARTITION_OFS, std::move(cur_file->source));
std::memcpy(file_table.data() + cur_file->entry_offset, &cur_entry, sizeof(RomFSFileEntry));
std::memset(file_table.data() + cur_file->entry_offset + sizeof(RomFSFileEntry), 0,
Common::AlignUp(cur_entry.name_size, 4));

8
src/core/file_sys/patch_manager.cpp
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@ -377,16 +377,16 @@ static void ApplyLayeredFS(VirtualFile& romfs, u64 title_id, ContentRecordType t
auto romfs_dir = FindSubdirectoryCaseless(subdir, "romfs");
if (romfs_dir != nullptr)
layers.push_back(std::make_shared<CachedVfsDirectory>(romfs_dir));
layers.emplace_back(std::make_shared<CachedVfsDirectory>(std::move(romfs_dir)));
auto ext_dir = FindSubdirectoryCaseless(subdir, "romfs_ext");
if (ext_dir != nullptr)
layers_ext.push_back(std::make_shared<CachedVfsDirectory>(ext_dir));
layers_ext.emplace_back(std::make_shared<CachedVfsDirectory>(std::move(ext_dir)));
if (type == ContentRecordType::HtmlDocument) {
auto manual_dir = FindSubdirectoryCaseless(subdir, "manual_html");
if (manual_dir != nullptr)
layers.push_back(std::make_shared<CachedVfsDirectory>(manual_dir));
layers.emplace_back(std::make_shared<CachedVfsDirectory>(std::move(manual_dir)));
}
}
@ -400,7 +400,7 @@ static void ApplyLayeredFS(VirtualFile& romfs, u64 title_id, ContentRecordType t
return;
}
layers.push_back(std::move(extracted));
layers.emplace_back(std::move(extracted));
auto layered = LayeredVfsDirectory::MakeLayeredDirectory(std::move(layers));
if (layered == nullptr) {

3
src/core/file_sys/registered_cache.cpp
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@ -322,7 +322,8 @@ VirtualFile RegisteredCache::OpenFileOrDirectoryConcat(const VirtualDir& open_di
return nullptr;
}
return ConcatenatedVfsFile::MakeConcatenatedFile(concat, concat.front()->GetName());
auto name = concat.front()->GetName();
return ConcatenatedVfsFile::MakeConcatenatedFile(std::move(name), std::move(concat));
}
VirtualFile RegisteredCache::GetFileAtID(NcaID id) const {

5
src/core/file_sys/romfs.cpp
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@ -133,7 +133,7 @@ VirtualDir ExtractRomFS(VirtualFile file, RomFSExtractionType type) {
out = out->GetSubdirectories().front();
}
return std::make_shared<CachedVfsDirectory>(out);
return std::make_shared<CachedVfsDirectory>(std::move(out));
}
VirtualFile CreateRomFS(VirtualDir dir, VirtualDir ext) {
@ -141,8 +141,7 @@ VirtualFile CreateRomFS(VirtualDir dir, VirtualDir ext) {
return nullptr;
RomFSBuildContext ctx{dir, ext};
auto file_map = ctx.Build();
return ConcatenatedVfsFile::MakeConcatenatedFile(0, file_map, dir->GetName());
return ConcatenatedVfsFile::MakeConcatenatedFile(0, dir->GetName(), ctx.Build());
}
} // namespace FileSys

6
src/core/file_sys/vfs_cached.cpp
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@ -6,13 +6,13 @@
namespace FileSys {
CachedVfsDirectory::CachedVfsDirectory(VirtualDir& source_dir)
CachedVfsDirectory::CachedVfsDirectory(VirtualDir&& source_dir)
: name(source_dir->GetName()), parent(source_dir->GetParentDirectory()) {
for (auto& dir : source_dir->GetSubdirectories()) {
dirs.emplace(dir->GetName(), std::make_shared<CachedVfsDirectory>(dir));
dirs.emplace(dir->GetName(), std::make_shared<CachedVfsDirectory>(std::move(dir)));
}
for (auto& file : source_dir->GetFiles()) {
files.emplace(file->GetName(), file);
files.emplace(file->GetName(), std::move(file));
}
}

2
src/core/file_sys/vfs_cached.h
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@ -11,7 +11,7 @@ namespace FileSys {
class CachedVfsDirectory : public ReadOnlyVfsDirectory {
public:
CachedVfsDirectory(VirtualDir& source_directory);
CachedVfsDirectory(VirtualDir&& source_directory);
~CachedVfsDirectory() override;
VirtualFile GetFile(std::string_view file_name) const override;

27
src/core/file_sys/vfs_concat.cpp
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@ -10,7 +10,7 @@
namespace FileSys {
ConcatenatedVfsFile::ConcatenatedVfsFile(ConcatenationMap&& concatenation_map_, std::string&& name_)
ConcatenatedVfsFile::ConcatenatedVfsFile(std::string&& name_, ConcatenationMap&& concatenation_map_)
: concatenation_map(std::move(concatenation_map_)), name(std::move(name_)) {
DEBUG_ASSERT(this->VerifyContinuity());
}
@ -30,8 +30,8 @@ bool ConcatenatedVfsFile::VerifyContinuity() const {
ConcatenatedVfsFile::~ConcatenatedVfsFile() = default;
VirtualFile ConcatenatedVfsFile::MakeConcatenatedFile(const std::vector<VirtualFile>& files,
std::string&& name) {
VirtualFile ConcatenatedVfsFile::MakeConcatenatedFile(std::string&& name,
std::vector<VirtualFile>&& files) {
// Fold trivial cases.
if (files.empty()) {
return nullptr;
@ -46,20 +46,21 @@ VirtualFile ConcatenatedVfsFile::MakeConcatenatedFile(const std::vector<VirtualF
u64 last_offset = 0;
for (auto& file : files) {
const auto size = file->GetSize();
concatenation_map.emplace_back(ConcatenationEntry{
.offset = last_offset,
.file = file,
.file = std::move(file),
});
last_offset += file->GetSize();
last_offset += size;
}
return VirtualFile(new ConcatenatedVfsFile(std::move(concatenation_map), std::move(name)));
return VirtualFile(new ConcatenatedVfsFile(std::move(name), std::move(concatenation_map)));
}
VirtualFile ConcatenatedVfsFile::MakeConcatenatedFile(u8 filler_byte,
const std::multimap<u64, VirtualFile>& files,
std::string&& name) {
VirtualFile ConcatenatedVfsFile::MakeConcatenatedFile(u8 filler_byte, std::string&& name,
std::multimap<u64, VirtualFile>&& files) {
// Fold trivial cases.
if (files.empty()) {
return nullptr;
@ -76,6 +77,8 @@ VirtualFile ConcatenatedVfsFile::MakeConcatenatedFile(u8 filler_byte,
// Iteration of a multimap is ordered, so offset will be strictly non-decreasing.
for (auto& [offset, file] : files) {
const auto size = file->GetSize();
if (offset > last_offset) {
concatenation_map.emplace_back(ConcatenationEntry{
.offset = last_offset,
@ -85,13 +88,13 @@ VirtualFile ConcatenatedVfsFile::MakeConcatenatedFile(u8 filler_byte,
concatenation_map.emplace_back(ConcatenationEntry{
.offset = offset,
.file = file,
.file = std::move(file),
});
last_offset = offset + file->GetSize();
last_offset = offset + size;
}
return VirtualFile(new ConcatenatedVfsFile(std::move(concatenation_map), std::move(name)));
return VirtualFile(new ConcatenatedVfsFile(std::move(name), std::move(concatenation_map)));
}
std::string ConcatenatedVfsFile::GetName() const {

12
src/core/file_sys/vfs_concat.h
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@ -24,22 +24,20 @@ private:
};
using ConcatenationMap = std::vector<ConcatenationEntry>;
explicit ConcatenatedVfsFile(std::vector<ConcatenationEntry>&& concatenation_map,
std::string&& name);
explicit ConcatenatedVfsFile(std::string&& name,
std::vector<ConcatenationEntry>&& concatenation_map);
bool VerifyContinuity() const;
public:
~ConcatenatedVfsFile() override;
/// Wrapper function to allow for more efficient handling of files.size() == 0, 1 cases.
static VirtualFile MakeConcatenatedFile(const std::vector<VirtualFile>& files,
std::string&& name);
static VirtualFile MakeConcatenatedFile(std::string&& name, std::vector<VirtualFile>&& files);
/// Convenience function that turns a map of offsets to files into a concatenated file, filling
/// gaps with a given filler byte.
static VirtualFile MakeConcatenatedFile(u8 filler_byte,
const std::multimap<u64, VirtualFile>& files,
std::string&& name);
static VirtualFile MakeConcatenatedFile(u8 filler_byte, std::string&& name,
std::multimap<u64, VirtualFile>&& files);
std::string GetName() const override;
std::size_t GetSize() const override;

8
src/core/file_sys/vfs_layered.cpp
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@ -38,7 +38,7 @@ VirtualDir LayeredVfsDirectory::GetDirectoryRelative(std::string_view path) cons
for (const auto& layer : dirs) {
auto dir = layer->GetDirectoryRelative(path);
if (dir != nullptr) {
out.push_back(std::move(dir));
out.emplace_back(std::move(dir));
}
}
@ -62,11 +62,11 @@ std::vector<VirtualFile> LayeredVfsDirectory::GetFiles() const {
std::set<std::string, std::less<>> out_names;
for (const auto& layer : dirs) {
for (const auto& file : layer->GetFiles()) {
for (auto& file : layer->GetFiles()) {
auto file_name = file->GetName();
if (!out_names.contains(file_name)) {
out_names.emplace(std::move(file_name));
out.push_back(file);
out.emplace_back(std::move(file));
}
}
}
@ -86,7 +86,7 @@ std::vector<VirtualDir> LayeredVfsDirectory::GetSubdirectories() const {
std::vector<VirtualDir> out;
out.reserve(names.size());
for (const auto& subdir : names)
out.push_back(GetSubdirectory(subdir));
out.emplace_back(GetSubdirectory(subdir));
return out;
}