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patch_manager: Return a std::unique_ptr from ParseControlNCA() and GetControlMetadata() instead of a std::shared_ptr 

Neither of these functions require the use of shared ownership of the
returned pointer. This makes it more difficult to create reference
cycles with, and makes the interface more generic, as std::shared_ptr
instances can be created from a std::unique_ptr, but the vice-versa
isn't possible. This also alters relevant functions to take NCA
arguments by const reference rather than a const reference to a
std::shared_ptr. These functions don't alter the ownership of the memory
used by the NCA instance, so we can make the interface more generic by
not assuming anything about the type of smart pointer the NCA is
contained within and make it the caller's responsibility to ensure the
supplied NCA is valid.
This commit is contained in:
Lioncash 2018-10-09 14:22:31 -04:00
parent 561d79e034
commit 6636f3ff47
7 changed files with 18 additions and 21 deletions
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15
src/core/file_sys/patch_manager.cpp
View File

@ -345,23 +345,22 @@ std::map<std::string, std::string, std::less<>> PatchManager::GetPatchVersionNam
return out;
}
std::pair<std::shared_ptr<NACP>, VirtualFile> PatchManager::GetControlMetadata() const {
std::pair<std::unique_ptr<NACP>, VirtualFile> PatchManager::GetControlMetadata() const {
const auto& installed{Service::FileSystem::GetUnionContents()};
const auto base_control_nca = installed->GetEntry(title_id, ContentRecordType::Control);
if (base_control_nca == nullptr)
return {};
return ParseControlNCA(base_control_nca);
return ParseControlNCA(*base_control_nca);
}
std::pair<std::shared_ptr<NACP>, VirtualFile> PatchManager::ParseControlNCA(
const std::shared_ptr<NCA>& nca) const {
const auto base_romfs = nca->GetRomFS();
std::pair<std::unique_ptr<NACP>, VirtualFile> PatchManager::ParseControlNCA(const NCA& nca) const {
const auto base_romfs = nca.GetRomFS();
if (base_romfs == nullptr)
return {};
const auto romfs = PatchRomFS(base_romfs, nca->GetBaseIVFCOffset(), ContentRecordType::Control);
const auto romfs = PatchRomFS(base_romfs, nca.GetBaseIVFCOffset(), ContentRecordType::Control);
if (romfs == nullptr)
return {};
@ -373,7 +372,7 @@ std::pair<std::shared_ptr<NACP>, VirtualFile> PatchManager::ParseControlNCA(
if (nacp_file == nullptr)
nacp_file = extracted->GetFile("Control.nacp");
const auto nacp = nacp_file == nullptr ? nullptr : std::make_shared<NACP>(nacp_file);
auto nacp = nacp_file == nullptr ? nullptr : std::make_unique<NACP>(nacp_file);
VirtualFile icon_file;
for (const auto& language : FileSys::LANGUAGE_NAMES) {
@ -382,6 +381,6 @@ std::pair<std::shared_ptr<NACP>, VirtualFile> PatchManager::ParseControlNCA(
break;
}
return {nacp, icon_file};
return {std::move(nacp), icon_file};
}
} // namespace FileSys

5
src/core/file_sys/patch_manager.h
View File

@ -57,11 +57,10 @@ public:
// Given title_id of the program, attempts to get the control data of the update and parse it,
// falling back to the base control data.
std::pair<std::shared_ptr<NACP>, VirtualFile> GetControlMetadata() const;
std::pair<std::unique_ptr<NACP>, VirtualFile> GetControlMetadata() const;
// Version of GetControlMetadata that takes an arbitrary NCA
std::pair<std::shared_ptr<NACP>, VirtualFile> ParseControlNCA(
const std::shared_ptr<NCA>& nca) const;
std::pair<std::unique_ptr<NACP>, VirtualFile> ParseControlNCA(const NCA& nca) const;
private:
u64 title_id;

2
src/core/loader/nsp.cpp
View File

@ -35,7 +35,7 @@ AppLoader_NSP::AppLoader_NSP(FileSys::VirtualFile file)
return;
std::tie(nacp_file, icon_file) =
FileSys::PatchManager(nsp->GetProgramTitleID()).ParseControlNCA(control_nca);
FileSys::PatchManager(nsp->GetProgramTitleID()).ParseControlNCA(*control_nca);
}
AppLoader_NSP::~AppLoader_NSP() = default;

2
src/core/loader/nsp.h
View File

@ -49,7 +49,7 @@ private:
std::unique_ptr<AppLoader> secondary_loader;
FileSys::VirtualFile icon_file;
std::shared_ptr<FileSys::NACP> nacp_file;
std::unique_ptr<FileSys::NACP> nacp_file;
u64 title_id;
};

2
src/core/loader/xci.cpp
View File

@ -30,7 +30,7 @@ AppLoader_XCI::AppLoader_XCI(FileSys::VirtualFile file)
return;
std::tie(nacp_file, icon_file) =
FileSys::PatchManager(xci->GetProgramTitleID()).ParseControlNCA(control_nca);
FileSys::PatchManager(xci->GetProgramTitleID()).ParseControlNCA(*control_nca);
}
AppLoader_XCI::~AppLoader_XCI() = default;

2
src/core/loader/xci.h
View File

@ -49,7 +49,7 @@ private:
std::unique_ptr<AppLoader_NCA> nca_loader;
FileSys::VirtualFile icon_file;
std::shared_ptr<FileSys::NACP> nacp_file;
std::unique_ptr<FileSys::NACP> nacp_file;
};
} // namespace Loader

11
src/yuzu/game_list_worker.cpp
View File

@ -27,9 +27,8 @@
#include "yuzu/ui_settings.h"
namespace {
void GetMetadataFromControlNCA(const FileSys::PatchManager& patch_manager,
const std::shared_ptr<FileSys::NCA>& nca, std::vector<u8>& icon,
std::string& name) {
void GetMetadataFromControlNCA(const FileSys::PatchManager& patch_manager, const FileSys::NCA& nca,
std::vector<u8>& icon, std::string& name) {
auto [nacp, icon_file] = patch_manager.ParseControlNCA(nca);
if (icon_file != nullptr)
icon = icon_file->ReadAllBytes();
@ -110,7 +109,7 @@ void GameListWorker::AddInstalledTitlesToGameList() {
const FileSys::PatchManager patch{program_id};
const auto& control = cache->GetEntry(game.title_id, FileSys::ContentRecordType::Control);
if (control != nullptr)
GetMetadataFromControlNCA(patch, control, icon, name);
GetMetadataFromControlNCA(patch, *control, icon, name);
auto it = FindMatchingCompatibilityEntry(compatibility_list, program_id);
@ -197,8 +196,8 @@ void GameListWorker::AddFstEntriesToGameList(const std::string& dir_path, unsign
res2 == Loader::ResultStatus::Success) {
// Use from metadata pool.
if (nca_control_map.find(program_id) != nca_control_map.end()) {
const auto nca = nca_control_map[program_id];
GetMetadataFromControlNCA(patch, nca, icon, name);
const auto& nca = nca_control_map[program_id];
GetMetadataFromControlNCA(patch, *nca, icon, name);
}
}