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fsmitm_romfsbuild: avoid unnecessary copies of vfs pointers

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This commit is contained in:
Liam
2023-10-13 13:34:41 -04:00
parent 1a4874e178
commit 053a16799e
10 changed files with 80 additions and 88 deletions
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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));