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Merge pull request #10710 from liamwhite/romfs2 

fsmitm_romfsbuild: avoid full path lookups
This commit is contained in:
liamwhite 2023-07-02 11:28:55 -04:00 committed by GitHub
parent b7c7768e0a edd54abee4
commit 87080e71c5
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 17 additions and 21 deletions
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38
src/core/file_sys/fsmitm_romfsbuild.cpp
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@ -105,19 +105,11 @@ static u64 romfs_get_hash_table_count(u64 num_entries) {
return count; return count;
} }
void RomFSBuildContext::VisitDirectory(VirtualDir root_romfs, VirtualDir ext_dir, void RomFSBuildContext::VisitDirectory(VirtualDir romfs_dir, VirtualDir ext_dir,
std::shared_ptr<RomFSBuildDirectoryContext> parent) { std::shared_ptr<RomFSBuildDirectoryContext> parent) {
std::vector<std::shared_ptr<RomFSBuildDirectoryContext>> child_dirs; std::vector<std::shared_ptr<RomFSBuildDirectoryContext>> child_dirs;
VirtualDir dir; const auto entries = romfs_dir->GetEntries();
if (parent->path_len == 0) {
dir = root_romfs;
} else {
dir = root_romfs->GetDirectoryRelative(parent->path);
}
const auto entries = dir->GetEntries();
for (const auto& kv : entries) { for (const auto& kv : entries) {
if (kv.second == VfsEntryType::Directory) { if (kv.second == VfsEntryType::Directory) {
@ -127,7 +119,7 @@ void RomFSBuildContext::VisitDirectory(VirtualDir root_romfs, VirtualDir ext_dir
child->path_len = child->cur_path_ofs + static_cast<u32>(kv.first.size()); child->path_len = child->cur_path_ofs + static_cast<u32>(kv.first.size());
child->path = parent->path + "/" + kv.first; child->path = parent->path + "/" + kv.first;
if (ext_dir != nullptr && ext_dir->GetFileRelative(child->path + ".stub") != nullptr) { if (ext_dir != nullptr && ext_dir->GetFile(kv.first + ".stub") != nullptr) {
continue; continue;
} }
@ -144,17 +136,17 @@ void RomFSBuildContext::VisitDirectory(VirtualDir root_romfs, VirtualDir ext_dir
child->path_len = child->cur_path_ofs + static_cast<u32>(kv.first.size()); child->path_len = child->cur_path_ofs + static_cast<u32>(kv.first.size());
child->path = parent->path + "/" + kv.first; child->path = parent->path + "/" + kv.first;
if (ext_dir != nullptr && ext_dir->GetFileRelative(child->path + ".stub") != nullptr) { if (ext_dir != nullptr && ext_dir->GetFile(kv.first + ".stub") != nullptr) {
continue; continue;
} }
// Sanity check on path_len // Sanity check on path_len
ASSERT(child->path_len < FS_MAX_PATH); ASSERT(child->path_len < FS_MAX_PATH);
child->source = root_romfs->GetFileRelative(child->path); child->source = romfs_dir->GetFile(kv.first);
if (ext_dir != nullptr) { if (ext_dir != nullptr) {
if (const auto ips = ext_dir->GetFileRelative(child->path + ".ips")) { if (const auto ips = ext_dir->GetFile(kv.first + ".ips")) {
if (auto patched = PatchIPS(child->source, ips)) { if (auto patched = PatchIPS(child->source, ips)) {
child->source = std::move(patched); child->source = std::move(patched);
} }
@ -168,23 +160,27 @@ void RomFSBuildContext::VisitDirectory(VirtualDir root_romfs, VirtualDir ext_dir
} }
for (auto& child : child_dirs) { for (auto& child : child_dirs) {
this->VisitDirectory(root_romfs, ext_dir, child); 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;
this->VisitDirectory(child_romfs_dir, child_ext_dir, child);
} }
} }
bool RomFSBuildContext::AddDirectory(std::shared_ptr<RomFSBuildDirectoryContext> parent_dir_ctx, bool RomFSBuildContext::AddDirectory(std::shared_ptr<RomFSBuildDirectoryContext> parent_dir_ctx,
std::shared_ptr<RomFSBuildDirectoryContext> dir_ctx) { std::shared_ptr<RomFSBuildDirectoryContext> dir_ctx) {
// Check whether it's already in the known directories. // Check whether it's already in the known directories.
const auto existing = directories.find(dir_ctx->path); const auto [it, is_new] = directories.emplace(dir_ctx->path, nullptr);
if (existing != directories.end()) if (!is_new) {
return false; return false;
}
// Add a new directory. // Add a new directory.
num_dirs++; num_dirs++;
dir_table_size += dir_table_size +=
sizeof(RomFSDirectoryEntry) + Common::AlignUp(dir_ctx->path_len - dir_ctx->cur_path_ofs, 4); sizeof(RomFSDirectoryEntry) + Common::AlignUp(dir_ctx->path_len - dir_ctx->cur_path_ofs, 4);
dir_ctx->parent = parent_dir_ctx; dir_ctx->parent = parent_dir_ctx;
directories.emplace(dir_ctx->path, dir_ctx); it->second = dir_ctx;
return true; return true;
} }
@ -192,8 +188,8 @@ bool RomFSBuildContext::AddDirectory(std::shared_ptr<RomFSBuildDirectoryContext>
bool RomFSBuildContext::AddFile(std::shared_ptr<RomFSBuildDirectoryContext> parent_dir_ctx, bool RomFSBuildContext::AddFile(std::shared_ptr<RomFSBuildDirectoryContext> parent_dir_ctx,
std::shared_ptr<RomFSBuildFileContext> file_ctx) { std::shared_ptr<RomFSBuildFileContext> file_ctx) {
// Check whether it's already in the known files. // Check whether it's already in the known files.
const auto existing = files.find(file_ctx->path); const auto [it, is_new] = files.emplace(file_ctx->path, nullptr);
if (existing != files.end()) { if (!is_new) {
return false; return false;
} }
@ -202,7 +198,7 @@ bool RomFSBuildContext::AddFile(std::shared_ptr<RomFSBuildDirectoryContext> pare
file_table_size += file_table_size +=
sizeof(RomFSFileEntry) + Common::AlignUp(file_ctx->path_len - file_ctx->cur_path_ofs, 4); sizeof(RomFSFileEntry) + Common::AlignUp(file_ctx->path_len - file_ctx->cur_path_ofs, 4);
file_ctx->parent = parent_dir_ctx; file_ctx->parent = parent_dir_ctx;
files.emplace(file_ctx->path, file_ctx); it->second = file_ctx;
return true; return true;
} }