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Merge pull request #4396 from FearlessTobi/open-delays

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fs_user: Add a delay for each file open
This commit is contained in:
Weiyi Wang 2019-03-23 12:21:12 -04:00 committed by GitHub
commit 21bda754b3
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16 changed files with 164 additions and 27 deletions
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13
src/core/file_sys/archive_backend.h
View file

@ -11,6 +11,7 @@
#include "common/bit_field.h"
#include "common/common_types.h"
#include "common/swap.h"
#include "core/file_sys/delay_generator.h"
#include "core/hle/result.h"
namespace FileSys {
@ -153,6 +154,18 @@ public:
* @return The number of free bytes in the archive
*/
virtual u64 GetFreeBytes() const = 0;
u64 GetOpenDelayNs() {
if (delay_generator != nullptr) {
return delay_generator->GetOpenDelayNs();
}
LOG_ERROR(Service_FS, "Delay generator was not initalized. Using default");
delay_generator = std::make_unique<DefaultDelayGenerator>();
return delay_generator->GetOpenDelayNs();
}
protected:
std::unique_ptr<DelayGenerator> delay_generator;
};
class ArchiveFactory : NonCopyable {

19
src/core/file_sys/archive_extsavedata.cpp
View file

@ -59,7 +59,7 @@ private:
class ExtSaveDataDelayGenerator : public DelayGenerator {
public:
u64 GetReadDelayNs(std::size_t length) override {
// This is the delay measured for a savedate read,
// This is the delay measured for a savedata read,
// not for extsaveData
// For now we will take that
static constexpr u64 slope(183);
@ -69,6 +69,14 @@ public:
std::max<u64>(static_cast<u64>(length) * slope + offset, minimum);
return ipc_delay_nanoseconds;
}
u64 GetOpenDelayNs() override {
// This is the delay measured on N3DS with
// https://gist.github.com/FearlessTobi/929b68489f4abb2c6cf81d56970a20b4
// from the results the average of each length was taken.
static constexpr u64 IPCDelayNanoseconds(3085068);
return IPCDelayNanoseconds;
}
};
/**
@ -80,7 +88,11 @@ public:
*/
class ExtSaveDataArchive : public SaveDataArchive {
public:
explicit ExtSaveDataArchive(const std::string& mount_point) : SaveDataArchive(mount_point) {}
explicit ExtSaveDataArchive(const std::string& mount_point,
std::unique_ptr<DelayGenerator> delay_generator_)
: SaveDataArchive(mount_point) {
delay_generator = std::move(delay_generator_);
}
std::string GetName() const override {
return "ExtSaveDataArchive: " + mount_point;
@ -232,7 +244,8 @@ ResultVal<std::unique_ptr<ArchiveBackend>> ArchiveFactory_ExtSaveData::Open(cons
return ERR_NOT_FORMATTED;
}
}
auto archive = std::make_unique<ExtSaveDataArchive>(fullpath);
std::unique_ptr<DelayGenerator> delay_generator = std::make_unique<ExtSaveDataDelayGenerator>();
auto archive = std::make_unique<ExtSaveDataArchive>(fullpath, std::move(delay_generator));
return MakeResult<std::unique_ptr<ArchiveBackend>>(std::move(archive));
}

11
src/core/file_sys/archive_sdmc.cpp
View file

@ -29,6 +29,14 @@ public:
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>> SDMCArchive::OpenFile(const Path& path,
@ -378,7 +386,8 @@ bool ArchiveFactory_SDMC::Initialize() {
ResultVal<std::unique_ptr<ArchiveBackend>> ArchiveFactory_SDMC::Open(const Path& path,
u64 program_id) {
auto archive = std::make_unique<SDMCArchive>(sdmc_directory);
std::unique_ptr<DelayGenerator> delay_generator = std::make_unique<SDMCDelayGenerator>();
auto archive = std::make_unique<SDMCArchive>(sdmc_directory, std::move(delay_generator));
return MakeResult<std::unique_ptr<ArchiveBackend>>(std::move(archive));
}

6
src/core/file_sys/archive_sdmc.h
View file

@ -17,7 +17,11 @@ namespace FileSys {
/// Archive backend for SDMC archive
class SDMCArchive : public ArchiveBackend {
public:
explicit SDMCArchive(const std::string& mount_point_) : mount_point(mount_point_) {}
explicit SDMCArchive(const std::string& mount_point_,
std::unique_ptr<DelayGenerator> delay_generator_)
: mount_point(mount_point_) {
delay_generator = std::move(delay_generator_);
}
std::string GetName() const override {
return "SDMCArchive: " + mount_point;

27
src/core/file_sys/archive_sdmcwriteonly.cpp
View file

@ -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));
}

4
src/core/file_sys/archive_sdmcwriteonly.h
View file

@ -19,7 +19,9 @@ namespace FileSys {
*/
class SDMCWriteOnlyArchive : public SDMCArchive {
public:
explicit SDMCWriteOnlyArchive(const std::string& mount_point) : SDMCArchive(mount_point) {}
explicit SDMCWriteOnlyArchive(const std::string& mount_point,
std::unique_ptr<DelayGenerator> delay_generator_)
: SDMCArchive(mount_point, std::move(delay_generator_)) {}
std::string GetName() const override {
return "SDMCWriteOnlyArchive: " + mount_point;

7
src/core/file_sys/delay_generator.cpp
View file

@ -19,4 +19,11 @@ u64 DefaultDelayGenerator::GetReadDelayNs(std::size_t length) {
return IPCDelayNanoseconds;
}
u64 DefaultDelayGenerator::GetOpenDelayNs() {
// This is the delay measured for a romfs open.
// For now we will take that as a default
static constexpr u64 IPCDelayNanoseconds(9438006);
return IPCDelayNanoseconds;
}
} // namespace FileSys

2
src/core/file_sys/delay_generator.h
View file

@ -13,6 +13,7 @@ class DelayGenerator {
public:
virtual ~DelayGenerator();
virtual u64 GetReadDelayNs(std::size_t length) = 0;
virtual u64 GetOpenDelayNs() = 0;
// TODO (B3N30): Add getter for all other file/directory io operations
};
@ -20,6 +21,7 @@ public:
class DefaultDelayGenerator : public DelayGenerator {
public:
u64 GetReadDelayNs(std::size_t length) override;
u64 GetOpenDelayNs() override;
};
} // namespace FileSys

9
src/core/file_sys/file_backend.h
View file

@ -55,6 +55,15 @@ public:
return delay_generator->GetReadDelayNs(length);
}
u64 GetOpenDelayNs() {
if (delay_generator != nullptr) {
return delay_generator->GetOpenDelayNs();
}
LOG_ERROR(Service_FS, "Delay generator was not initalized. Using default");
delay_generator = std::make_unique<DefaultDelayGenerator>();
return delay_generator->GetOpenDelayNs();
}
/**
* Get the size of the file in bytes
* @return Size of the file in bytes

6
src/core/file_sys/ivfc_archive.cpp
View file

@ -14,7 +14,11 @@
namespace FileSys {
IVFCArchive::IVFCArchive(std::shared_ptr<RomFSReader> file) : romfs_file(std::move(file)) {}
IVFCArchive::IVFCArchive(std::shared_ptr<RomFSReader> file,
std::unique_ptr<DelayGenerator> delay_generator_)
: romfs_file(std::move(file)) {
delay_generator = std::move(delay_generator_);
}
std::string IVFCArchive::GetName() const {
return "IVFC";

26
src/core/file_sys/ivfc_archive.h
View file

@ -31,6 +31,13 @@ class IVFCDelayGenerator : public DelayGenerator {
u64 IPCDelayNanoseconds = std::max<u64>(static_cast<u64>(length) * slope + offset, minimum);
return IPCDelayNanoseconds;
}
u64 GetOpenDelayNs() override {
// This is the delay measured for a romfs open.
// For now we will take that as a default
static constexpr u64 IPCDelayNanoseconds(9438006);
return IPCDelayNanoseconds;
}
};
class RomFSDelayGenerator : public DelayGenerator {
@ -45,6 +52,14 @@ public:
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/eb1d70619c65c7e6f02141d71e79a36e
// from the results the average of each length was taken.
static constexpr u64 IPCDelayNanoseconds(9438006);
return IPCDelayNanoseconds;
}
};
class ExeFSDelayGenerator : public DelayGenerator {
@ -59,6 +74,14 @@ public:
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/eb1d70619c65c7e6f02141d71e79a36e
// from the results the average of each length was taken.
static constexpr u64 IPCDelayNanoseconds(9438006);
return IPCDelayNanoseconds;
}
};
/**
@ -68,7 +91,8 @@ public:
*/
class IVFCArchive : public ArchiveBackend {
public:
IVFCArchive(std::shared_ptr<RomFSReader> file);
IVFCArchive(std::shared_ptr<RomFSReader> file,
std::unique_ptr<DelayGenerator> delay_generator_);
std::string GetName() const override;

8
src/core/file_sys/savedata_archive.cpp
View file

@ -25,6 +25,14 @@ public:
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>> SaveDataArchive::OpenFile(const Path& path,

14
src/core/hle/service/fs/archive.cpp
View file

@ -77,19 +77,21 @@ ResultCode ArchiveManager::RegisterArchiveType(std::unique_ptr<FileSys::ArchiveF
return RESULT_SUCCESS;
}
ResultVal<std::shared_ptr<File>> ArchiveManager::OpenFileFromArchive(ArchiveHandle archive_handle,
const FileSys::Path& path,
const FileSys::Mode mode) {
std::tuple<ResultVal<std::shared_ptr<File>>, std::chrono::nanoseconds>
ArchiveManager::OpenFileFromArchive(ArchiveHandle archive_handle, const FileSys::Path& path,
const FileSys::Mode mode) {
ArchiveBackend* archive = GetArchive(archive_handle);
if (archive == nullptr)
return FileSys::ERR_INVALID_ARCHIVE_HANDLE;
return std::make_tuple(FileSys::ERR_INVALID_ARCHIVE_HANDLE,
static_cast<std::chrono::nanoseconds>(0));
std::chrono::nanoseconds open_timeout_ns{archive->GetOpenDelayNs()};
auto backend = archive->OpenFile(path, mode);
if (backend.Failed())
return backend.Code();
return std::make_tuple(backend.Code(), open_timeout_ns);
auto file = std::shared_ptr<File>(new File(system, std::move(backend).Unwrap(), path));
return MakeResult<std::shared_ptr<File>>(std::move(file));
return std::make_tuple(MakeResult<std::shared_ptr<File>>(std::move(file)), open_timeout_ns);
}
ResultCode ArchiveManager::DeleteFileFromArchive(ArchiveHandle archive_handle,

7
src/core/hle/service/fs/archive.h
View file

@ -77,11 +77,10 @@ public:
* @param archive_handle Handle to an open Archive object
* @param path Path to the File inside of the Archive
* @param mode Mode under which to open the File
* @return The opened File object
* @return Tuple of the opened File object and the open delay
*/
ResultVal<std::shared_ptr<File>> OpenFileFromArchive(ArchiveHandle archive_handle,
const FileSys::Path& path,
const FileSys::Mode mode);
std::tuple<ResultVal<std::shared_ptr<File>>, std::chrono::nanoseconds> OpenFileFromArchive(
ArchiveHandle archive_handle, const FileSys::Path& path, const FileSys::Mode mode);
/**
* Delete a File from an Archive

12
src/core/hle/service/fs/file.cpp
View file

@ -71,12 +71,12 @@ void File::Read(Kernel::HLERequestContext& ctx) {
rb.PushMappedBuffer(buffer);
std::chrono::nanoseconds read_timeout_ns{backend->GetReadDelayNs(length)};
ctx.SleepClientThread(system.Kernel().GetThreadManager().GetCurrentThread(), "file::read",
read_timeout_ns,
[](Kernel::SharedPtr<Kernel::Thread> thread,
Kernel::HLERequestContext& ctx, Kernel::ThreadWakeupReason reason) {
// Nothing to do here
});
ctx.SleepClientThread(
system.Kernel().GetThreadManager().GetCurrentThread(), "file::read", read_timeout_ns,
[](Kernel::SharedPtr<Kernel::Thread> /*thread*/, Kernel::HLERequestContext& /*ctx*/,
Kernel::ThreadWakeupReason /*reason*/) {
// Nothing to do here
});
}
void File::Write(Kernel::HLERequestContext& ctx) {

20
src/core/hle/service/fs/fs_user.cpp
View file

@ -16,6 +16,7 @@
#include "core/hle/ipc_helpers.h"
#include "core/hle/kernel/client_port.h"
#include "core/hle/kernel/client_session.h"
#include "core/hle/kernel/event.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/server_session.h"
#include "core/hle/result.h"
@ -59,7 +60,7 @@ void FS_USER::OpenFile(Kernel::HLERequestContext& ctx) {
LOG_DEBUG(Service_FS, "path={}, mode={} attrs={}", file_path.DebugStr(), mode.hex, attributes);
ResultVal<std::shared_ptr<File>> file_res =
const auto [file_res, open_timeout_ns] =
archives.OpenFileFromArchive(archive_handle, file_path, mode);
IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
rb.Push(file_res.Code());
@ -70,6 +71,13 @@ void FS_USER::OpenFile(Kernel::HLERequestContext& ctx) {
rb.PushMoveObjects<Kernel::Object>(nullptr);
LOG_ERROR(Service_FS, "failed to get a handle for file {}", file_path.DebugStr());
}
ctx.SleepClientThread(
system.Kernel().GetThreadManager().GetCurrentThread(), "fs_user::open", open_timeout_ns,
[](Kernel::SharedPtr<Kernel::Thread> /*thread*/, Kernel::HLERequestContext& /*ctx*/,
Kernel::ThreadWakeupReason /*reason*/) {
// Nothing to do here
});
}
void FS_USER::OpenFileDirectly(Kernel::HLERequestContext& ctx) {
@ -110,7 +118,7 @@ void FS_USER::OpenFileDirectly(Kernel::HLERequestContext& ctx) {
}
SCOPE_EXIT({ archives.CloseArchive(*archive_handle); });
ResultVal<std::shared_ptr<File>> file_res =
const auto [file_res, open_timeout_ns] =
archives.OpenFileFromArchive(*archive_handle, file_path, mode);
rb.Push(file_res.Code());
if (file_res.Succeeded()) {
@ -121,6 +129,14 @@ void FS_USER::OpenFileDirectly(Kernel::HLERequestContext& ctx) {
LOG_ERROR(Service_FS, "failed to get a handle for file {} mode={} attributes={}",
file_path.DebugStr(), mode.hex, attributes);
}
ctx.SleepClientThread(system.Kernel().GetThreadManager().GetCurrentThread(),
"fs_user::open_directly", open_timeout_ns,
[](Kernel::SharedPtr<Kernel::Thread> /*thread*/,
Kernel::HLERequestContext& /*ctx*/,
Kernel::ThreadWakeupReason /*reason*/) {
// Nothing to do here
});
}
void FS_USER::DeleteFile(Kernel::HLERequestContext& ctx) {