ShuriZma
/
dolphin
mirror of https://github.com/dolphin-emu/dolphin.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

IOS/FS: Emulate superblock write timing

This commit is contained in:
Léo Lam 2018-03-29 18:57:07 +02:00
parent b74577ff43
commit 42983c0bd3
1 changed files with 19 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
Source/Core/Core/IOS/FS/FileSystemProxy.cpp
View File

@ -36,6 +36,9 @@ static IPCCommandResult GetFSReply(s32 return_value, u64 extra_tb_ticks = 0)
return {return_value, true, (2700 + extra_tb_ticks) * SystemTimers::TIMER_RATIO};
}
/// Amount of TB ticks required for a superblock write to complete.
constexpr u64 SUPERBLOCK_WRITE_TICKS = 3370000;
FS::FS(Kernel& ios, const std::string& device_name) : Device(ios, device_name)
{
}
@ -80,6 +83,16 @@ static u64 EstimateFileLookupTicks(const std::string& path, FileLookupMode mode)
return 1000 + 340 * number_of_path_components;
}
/// Get a reply with the correct timing for operations that modify the superblock.
///
/// A superblock flush takes a very large amount of time, so other delays are ignored
/// to simplify the implementation as they are insignificant.
static IPCCommandResult GetReplyForSuperblockOperation(ResultCode result)
{
const u64 ticks = result == ResultCode::Success ? SUPERBLOCK_WRITE_TICKS : 0;
return GetFSReply(ConvertResult(result), ticks);
}
IPCCommandResult FS::Open(const OpenRequest& request)
{
if (m_fd_map.size() >= 16)
@ -271,7 +284,7 @@ IPCCommandResult FS::Format(const Handle& handle, const IOCtlRequest& request)
return GetFSReply(ConvertResult(ResultCode::AccessDenied));
const ResultCode result = m_ios.GetFS()->Format(handle.uid);
return GetFSReply(ConvertResult(result));
return GetReplyForSuperblockOperation(result);
}
IPCCommandResult FS::GetStats(const Handle& handle, const IOCtlRequest& request)
@ -306,7 +319,7 @@ IPCCommandResult FS::CreateDirectory(const Handle& handle, const IOCtlRequest& r
m_ios.GetFS()->CreateDirectory(handle.uid, handle.gid, params->path, params->attribute,
params->owner_mode, params->group_mode, params->other_mode);
LogResult(StringFromFormat("CreateDirectory(%s)", params->path), result);
return GetFSReply(ConvertResult(result));
return GetReplyForSuperblockOperation(result);
}
IPCCommandResult FS::ReadDirectory(const Handle& handle, const IOCtlVRequest& request)
@ -371,7 +384,7 @@ IPCCommandResult FS::SetAttribute(const Handle& handle, const IOCtlRequest& requ
handle.uid, params->path, params->uid, params->gid, params->attribute, params->owner_mode,
params->group_mode, params->other_mode);
LogResult(StringFromFormat("SetMetadata(%s)", params->path), result);
return GetFSReply(ConvertResult(result));
return GetReplyForSuperblockOperation(result);
}
IPCCommandResult FS::GetAttribute(const Handle& handle, const IOCtlRequest& request)
@ -408,7 +421,7 @@ IPCCommandResult FS::DeleteFile(const Handle& handle, const IOCtlRequest& reques
const std::string path = Memory::GetString(request.buffer_in, 64);
const ResultCode result = m_ios.GetFS()->Delete(handle.uid, handle.gid, path);
LogResult(StringFromFormat("Delete(%s)", path.c_str()), result);
return GetFSReply(ConvertResult(result));
return GetReplyForSuperblockOperation(result);
}
IPCCommandResult FS::RenameFile(const Handle& handle, const IOCtlRequest& request)
@ -420,7 +433,7 @@ IPCCommandResult FS::RenameFile(const Handle& handle, const IOCtlRequest& reques
const std::string new_path = Memory::GetString(request.buffer_in + 64, 64);
const ResultCode result = m_ios.GetFS()->Rename(handle.uid, handle.gid, old_path, new_path);
LogResult(StringFromFormat("Rename(%s, %s)", old_path.c_str(), new_path.c_str()), result);
return GetFSReply(ConvertResult(result));
return GetReplyForSuperblockOperation(result);
}
IPCCommandResult FS::CreateFile(const Handle& handle, const IOCtlRequest& request)
@ -433,7 +446,7 @@ IPCCommandResult FS::CreateFile(const Handle& handle, const IOCtlRequest& reques
m_ios.GetFS()->CreateFile(handle.uid, handle.gid, params->path, params->attribute,
params->owner_mode, params->group_mode, params->other_mode);
LogResult(StringFromFormat("CreateFile(%s)", params->path), result);
return GetFSReply(ConvertResult(result));
return GetReplyForSuperblockOperation(result);
}
IPCCommandResult FS::SetFileVersionControl(const Handle& handle, const IOCtlRequest& request)