You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 

187 lines
8.0 KiB

#nullable enable
using IPA.Logging;
using System;
using System.Collections.Generic;
using System.Reflection;
using System.Threading;
using System.Runtime.CompilerServices;
using System.ComponentModel;
using IPA.Config.Data;
#if NET3
using Net3_Proxy;
using Array = Net3_Proxy.Array;
#endif
[assembly: InternalsVisibleTo(IPA.Config.Stores.GeneratedStore.AssemblyVisibilityTarget)]
namespace IPA.Config.Stores
{
internal static partial class GeneratedStoreImpl
{
internal interface IGeneratedStore
{
Type Type { get; }
IGeneratedStore Parent { get; }
Impl Impl { get; }
void OnReload();
void Changed();
IDisposable ChangeTransaction();
Value Serialize();
void Deserialize(Value val);
}
internal interface IGeneratedStore<T> : IGeneratedStore where T : class
{
void CopyFrom(T source, bool useLock);
}
internal interface IGeneratedPropertyChanged : INotifyPropertyChanged
{
PropertyChangedEventHandler PropertyChangedEvent { get; }
}
internal class Impl : IConfigStore
{
private readonly IGeneratedStore generated;
private long enteredTransactions;
internal static ConstructorInfo Ctor = typeof(Impl).GetConstructor(new[] { typeof(IGeneratedStore) });
public Impl(IGeneratedStore store) => generated = store;
public WaitHandle? SyncObject => null;
public static WaitHandle? ImplGetSyncObject(IGeneratedStore s) => FindImpl(s)?.SyncObject;
internal static MethodInfo ImplGetSyncObjectMethod = typeof(Impl).GetMethod(nameof(ImplGetSyncObject));
public ReaderWriterLockSlim WriteSyncObject { get; } = new();
public static ReaderWriterLockSlim? ImplGetWriteSyncObject(IGeneratedStore s) => FindImpl(s)?.WriteSyncObject;
internal static MethodInfo ImplGetWriteSyncObjectMethod = typeof(Impl).GetMethod(nameof(ImplGetWriteSyncObject));
internal static MethodInfo ImplSignalChangedMethod = typeof(Impl).GetMethod(nameof(ImplSignalChanged));
public static void ImplSignalChanged(IGeneratedStore s) => FindImpl(s)?.SignalChanged();
public void SignalChanged()
{
ConfigRuntime.AddRequiresSave(this);
}
internal static MethodInfo ImplInvokeChangedMethod = typeof(Impl).GetMethod(nameof(ImplInvokeChanged));
public static void ImplInvokeChanged(IGeneratedStore s) => FindImpl(s)?.InvokeChanged();
public void InvokeChanged() => generated.Changed();
internal static MethodInfo ImplTakeReadMethod = typeof(Impl).GetMethod(nameof(ImplTakeRead));
public static void ImplTakeRead(IGeneratedStore s) => FindImpl(s)?.TakeRead();
public void TakeRead()
{
if (!WriteSyncObject.IsWriteLockHeld)
WriteSyncObject.EnterReadLock();
}
internal static MethodInfo ImplReleaseReadMethod = typeof(Impl).GetMethod(nameof(ImplReleaseRead));
public static void ImplReleaseRead(IGeneratedStore s) => FindImpl(s)?.ReleaseRead();
public void ReleaseRead()
{
if (!WriteSyncObject.IsWriteLockHeld)
WriteSyncObject.ExitReadLock();
}
internal static MethodInfo ImplTakeWriteMethod = typeof(Impl).GetMethod(nameof(ImplTakeWrite));
public static void ImplTakeWrite(IGeneratedStore s) => FindImpl(s)?.TakeWrite();
public void TakeWrite() => WriteSyncObject.EnterWriteLock();
internal static MethodInfo ImplReleaseWriteMethod = typeof(Impl).GetMethod(nameof(ImplReleaseWrite));
public static void ImplReleaseWrite(IGeneratedStore s) => FindImpl(s)?.ReleaseWrite();
public void ReleaseWrite() => WriteSyncObject.ExitWriteLock();
internal static MethodInfo ImplChangeTransactionMethod = typeof(Impl).GetMethod(nameof(ImplChangeTransaction));
public static IDisposable? ImplChangeTransaction(IGeneratedStore s, IDisposable nest) => FindImpl(s)?.ChangeTransaction(nest);
// TODO: improve trasactionals so they don't always save in every case
public IDisposable ChangeTransaction(IDisposable nest, bool takeWrite = true)
=> GetFreeTransaction().InitWith(this, nest, takeWrite && !WriteSyncObject.IsWriteLockHeld);
private static ChangeTransactionObj GetFreeTransaction()
=> freeTransactionObjs.Count > 0 ? freeTransactionObjs.Pop()
: new ChangeTransactionObj();
// TODO: maybe sometimes clean this?
private static readonly Stack<ChangeTransactionObj> freeTransactionObjs = new();
private sealed class ChangeTransactionObj : IDisposable
{
private struct Data
{
public readonly Impl impl;
public readonly bool ownsWrite;
public readonly IDisposable nested;
public Data(Impl impl, bool takeWrite, IDisposable nest)
{
this.impl = impl; ownsWrite = takeWrite; nested = nest;
}
}
private Data data;
public ChangeTransactionObj InitWith(Impl impl, IDisposable nest, bool takeWrite)
{
data = new Data(impl, takeWrite, nest);
_ = Interlocked.Increment(ref impl.enteredTransactions);
if (data.ownsWrite)
impl.TakeWrite();
return this;
}
public void Dispose() => Dispose(true);
private void Dispose(bool addToStore)
{
if (data.impl != null && Interlocked.Decrement(ref data.impl.enteredTransactions) == 0)
{
data.impl.InvokeChanged();
}
data.nested?.Dispose();
try
{
if (data.ownsWrite)
data.impl?.ReleaseWrite();
}
catch
{
}
data = default;
if (addToStore)
freeTransactionObjs.Push(this);
}
~ChangeTransactionObj() => Dispose(false);
}
public static Impl? FindImpl(IGeneratedStore store)
{
while (store?.Parent != null) store = store.Parent; // walk to the top of the tree
return store?.Impl;
}
internal static MethodInfo ImplReadFromMethod = typeof(Impl).GetMethod(nameof(ImplReadFrom));
public static void ImplReadFrom(IGeneratedStore s, ConfigProvider provider) => FindImpl(s)?.ReadFrom(provider);
public void ReadFrom(ConfigProvider provider)
{
Logger.Config.Debug($"Generated impl ReadFrom {generated.GetType()}");
var values = provider.Load();
//Logger.config.Debug($"Read {values}");
generated.Deserialize(values);
using var transaction = generated.ChangeTransaction();
generated.OnReload();
}
internal static MethodInfo ImplWriteToMethod = typeof(Impl).GetMethod(nameof(ImplWriteTo));
public static void ImplWriteTo(IGeneratedStore s, ConfigProvider provider) => FindImpl(s)?.WriteTo(provider);
public void WriteTo(ConfigProvider provider)
{
Logger.Config.Debug($"Generated impl WriteTo {generated.GetType()}");
var values = generated.Serialize();
//Logger.config.Debug($"Serialized {values}");
provider.Store(values);
}
}
}
}