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BizHawk
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thread gamedb load

This commit is contained in:
zeromus 2020-06-07 16:43:50 -05:00
parent d27128a69f
commit bd8003c725
2 changed files with 59 additions and 32 deletions
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4
src/BizHawk.Client.EmuHawk/MainForm.cs
View File

@ -275,6 +275,8 @@ namespace BizHawk.Client.EmuHawk
CloseRomContextMenuItem.Image = Properties.Resources.Close;
}
Database.InitializeDatabase(Path.Combine(PathUtils.ExeDirectoryPath, "gamedb", "gamedb.txt"));
GlobalWin.MainForm = this;
Rewinder = new Rewinder();
@ -327,8 +329,6 @@ namespace BizHawk.Client.EmuHawk
MessageBox.Show(e.Message);
}
Database.LoadDatabase(Path.Combine(PathUtils.ExeDirectoryPath, "gamedb", "gamedb.txt"));
// TODO GL - a lot of disorganized wiring-up here
// installed separately on Unix (via package manager or from https://developer.nvidia.com/cg-toolkit-download), look in $PATH
CGC.CGCBinPath = OSTailoredCode.IsUnixHost ? "cgc" : Path.Combine(PathUtils.DllDirectoryPath, "cgc.exe");

87
src/BizHawk.Emulation.Common/Database/Database.cs
View File

@ -13,7 +13,9 @@ namespace BizHawk.Emulation.Common
{
public static class Database
{
private static readonly Dictionary<string, CompactGameInfo> DB = new Dictionary<string, CompactGameInfo>();
private static Dictionary<string, CompactGameInfo> DB;
static EventWaitHandle acquire = new EventWaitHandle(false, EventResetMode.ManualReset);
private static string RemoveHashType(string hash)
{
@ -31,19 +33,6 @@ namespace BizHawk.Emulation.Common
return hash;
}
public static GameInfo CheckDatabase(string hash)
{
var hashNoType = RemoveHashType(hash);
DB.TryGetValue(hashNoType, out var cgi);
if (cgi == null)
{
Console.WriteLine($"DB: hash {hash} not in game database.");
return null;
}
return new GameInfo(cgi);
}
private static void LoadDatabase_Escape(string line, string path)
{
if (!line.ToUpperInvariant().StartsWith("#INCLUDE"))
@ -56,7 +45,7 @@ namespace BizHawk.Emulation.Common
if (File.Exists(filename))
{
Debug.WriteLine("loading external game database {0}", line);
LoadDatabase(filename);
InitializeDatabase(filename);
}
else
{
@ -97,9 +86,15 @@ namespace BizHawk.Emulation.Common
File.AppendAllText(path, sb.ToString());
}
public static void LoadDatabase(string path)
static bool initialized = false;
static void initializeWork(string path)
{
using var reader = new StreamReader(new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite));
//reminder: this COULD be done on several threads, if it takes even longer
Dictionary<string, CompactGameInfo> db = new Dictionary<string, CompactGameInfo>();
var stopwatch = Stopwatch.StartNew();
using var reader = new StreamReader(new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read));
while (reader.EndOfStream == false)
{
var line = reader.ReadLine() ?? "";
@ -129,17 +124,17 @@ namespace BizHawk.Emulation.Common
// remove a hash type identifier. well don't really need them for indexing (they're just there for human purposes)
Status = items[1].Trim()
switch
{
"B" => RomStatus.BadDump,
"V" => RomStatus.BadDump,
"T" => RomStatus.TranslatedRom,
"O" => RomStatus.Overdump,
"I" => RomStatus.Bios,
"D" => RomStatus.Homebrew,
"H" => RomStatus.Hack,
"U" => RomStatus.Unknown,
_ => RomStatus.GoodDump
},
{
"B" => RomStatus.BadDump,
"V" => RomStatus.BadDump,
"T" => RomStatus.TranslatedRom,
"O" => RomStatus.Overdump,
"I" => RomStatus.Bios,
"D" => RomStatus.Homebrew,
"H" => RomStatus.Hack,
"U" => RomStatus.Unknown,
_ => RomStatus.GoodDump
},
Name = items[2],
System = items[3],
MetaData = items.Length >= 6 ? items[5] : null,
@ -148,23 +143,55 @@ namespace BizHawk.Emulation.Common
};
#if DEBUG
if (DB.ContainsKey(game.Hash))
if (db.ContainsKey(game.Hash))
{
Console.WriteLine("gamedb: Multiple hash entries {0}, duplicate detected on \"{1}\" and \"{2}\"", game.Hash, game.Name, DB[game.Hash].Name);
}
#endif
DB[game.Hash] = game;
db[game.Hash] = game;
}
catch
{
Debug.WriteLine($"Error parsing database entry: {line}");
}
}
//commit the finished database load
//it's left as null until now to help catch mistakes in using the resource
DB = db;
acquire.Set();
Console.WriteLine("GameDB load: " + stopwatch.Elapsed + " sec");
}
public static void InitializeDatabase(string path)
{
if (initialized) throw new InvalidOperationException("Did not expect re-initialize of game Database");
initialized = true;
ThreadPool.QueueUserWorkItem(_=>initializeWork(path));
}
public static GameInfo CheckDatabase(string hash)
{
acquire.WaitOne();
var hashNoType = RemoveHashType(hash);
DB.TryGetValue(hashNoType, out var cgi);
if (cgi == null)
{
Console.WriteLine($"DB: hash {hash} not in game database.");
return null;
}
return new GameInfo(cgi);
}
public static GameInfo GetGameInfo(byte[] romData, string fileName)
{
acquire.WaitOne();
var hash = $"{CRC32.Calculate(romData):X8}";
if (DB.TryGetValue(hash, out var cgi))
{