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Add DelayGenerator for all file backends

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This commit is contained in:
B3n30
2018-02-24 14:14:54 +01:00
parent 58b16c5459
commit 06a7676ed1
13 changed files with 172 additions and 71 deletions
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17
src/core/file_sys/savedata_archive.cpp
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@ -13,6 +13,20 @@
namespace FileSys {
class SaveDataDelayGenerator : public DelayGenerator {
public:
u64 GetReadDelayNs(size_t length) override {
// The delay was measured on O3DS and O2DS with
// https://gist.github.com/B3n30/ac40eac20603f519ff106107f4ac9182
// from the results the average of each length was taken.
static constexpr u64 slope(183);
static constexpr u64 offset(524879);
static constexpr u64 minimum(631826);
u64 IPCDelayNanoseconds = std::max<u64>(static_cast<u64>(length) * slope + offset, minimum);
return IPCDelayNanoseconds;
}
};
ResultVal<std::unique_ptr<FileBackend>> SaveDataArchive::OpenFile(const Path& path,
const Mode& mode) const {
LOG_DEBUG(Service_FS, "called path=%s mode=%01X", path.DebugStr().c_str(), mode.hex);
@ -67,7 +81,8 @@ ResultVal<std::unique_ptr<FileBackend>> SaveDataArchive::OpenFile(const Path& pa
return ERROR_FILE_NOT_FOUND;
}
auto disk_file = std::make_unique<DiskFile>(std::move(file), mode);
std::unique_ptr<DelayGenerator> delay_generator = std::make_unique<SaveDataDelayGenerator>();
auto disk_file = std::make_unique<DiskFile>(std::move(file), mode, std::move(delay_generator));
return MakeResult<std::unique_ptr<FileBackend>>(std::move(disk_file));
}