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fs_user: Add a delay for each file open

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This commit is contained in:
fearlessTobi
2018-11-02 18:11:22 +01:00
parent d0de727a97
commit fc7e6c9cc9
14 changed files with 153 additions and 11 deletions
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27
src/core/file_sys/archive_sdmcwriteonly.cpp
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@ -15,6 +15,28 @@
namespace FileSys {
class SDMCWriteOnlyDelayGenerator : public DelayGenerator {
public:
u64 GetReadDelayNs(std::size_t length) override {
// This is the delay 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;
}
u64 GetOpenDelayNs() override {
// This is the delay measured on O3DS and O2DS with
// https://gist.github.com/FearlessTobi/c37e143c314789251f98f2c45cd706d2
// from the results the average of each length was taken.
static constexpr u64 IPCDelayNanoseconds(269082);
return IPCDelayNanoseconds;
}
};
ResultVal<std::unique_ptr<FileBackend>> SDMCWriteOnlyArchive::OpenFile(const Path& path,
const Mode& mode) const {
if (mode.read_flag) {
@ -51,7 +73,10 @@ bool ArchiveFactory_SDMCWriteOnly::Initialize() {
ResultVal<std::unique_ptr<ArchiveBackend>> ArchiveFactory_SDMCWriteOnly::Open(const Path& path,
u64 program_id) {
auto archive = std::make_unique<SDMCWriteOnlyArchive>(sdmc_directory);
std::unique_ptr<DelayGenerator> delay_generator =
std::make_unique<SDMCWriteOnlyDelayGenerator>();
auto archive =
std::make_unique<SDMCWriteOnlyArchive>(sdmc_directory, std::move(delay_generator));
return MakeResult<std::unique_ptr<ArchiveBackend>>(std::move(archive));
}