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#13: use concurrentDictionaries to allow access from multiple threads

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master
Simon G. 1 year ago
parent 45125eb926
commit eab71214f4
Signed by: SimonG
GPG Key ID: 0B82B964BA536523
3 changed files with 37 additions and 26 deletions
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  1. 1
      LightweightIocContainer.Validation/LightweightIocContainer.Validation.xml
  2. 52
      LightweightIocContainer/IocContainer.cs
  3. 10
      LightweightIocContainer/LightweightIocContainer.xml

1
LightweightIocContainer.Validation/LightweightIocContainer.Validation.xml
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@ -13,7 +13,6 @@
<summary>
Validator for your <see cref="T:LightweightIocContainer.IocContainer"/> to check if everything can be resolved with your current setup
</summary>
<param name="iocContainer">The <see cref="T:LightweightIocContainer.IocContainer"/></param>
</member>
<member name="M:LightweightIocContainer.Validation.IocValidator.AddParameter``2(``1)">
<summary>

52
LightweightIocContainer/IocContainer.cs
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@ -2,6 +2,7 @@
// Created: 2019-05-20
// Copyright(c) 2019 SimonG. All Rights Reserved.
using System.Collections.Concurrent;
using System.Reflection;
using LightweightIocContainer.Exceptions;
using LightweightIocContainer.Interfaces;
@ -21,8 +22,8 @@ public class IocContainer : IIocContainer, IIocResolver
{
private readonly RegistrationFactory _registrationFactory;
private readonly List<(Type type, object? instance)> _singletons = [];
private readonly List<(Type type, Type scope, Dictionary<object, object?> instances)> _multitons = [];
private readonly ConcurrentDictionary<Type, object?> _singletons = [];
private readonly ConcurrentDictionary<(Type type, Type scope), ConcurrentDictionary<object, object?>> _multitons = [];
private readonly List<Type> _ignoreConstructorAttributes = [];
@ -390,8 +391,8 @@ public class IocContainer : IIocContainer, IIocResolver
else
throw new UnknownRegistrationException($"There is no registration of type {registration.GetType().Name}.");
if (registration is ILifestyleProvider { Lifestyle: Lifestyle.Singleton })
_singletons.Add((GetType<T>(registration), instance));
if (registration is ILifestyleProvider { Lifestyle: Lifestyle.Singleton })
_singletons.TryAdd(GetType<T>(registration), instance);
if (registration is IOnCreate onCreateRegistration && instance is not null)
onCreateRegistration.OnCreateAction?.Invoke(instance);
@ -429,8 +430,11 @@ public class IocContainer : IIocContainer, IIocResolver
/// </summary>
/// <param name="registration">The <see cref="IRegistration"/></param>
/// <returns>A singleton instance if existing for the given <see cref="IRegistration"/>, null if not</returns>
private object? TryGetSingletonInstance<T>(IRegistration registration) =>
_singletons.FirstOrDefault(s => s.type == GetType<T>(registration)).instance; //if a singleton instance exists return it
private object? TryGetSingletonInstance<T>(IRegistration registration)
{
_singletons.TryGetValue(GetType<T>(registration), out object? value); //if a singleton instance exists return it
return value;
}
/// <summary>
/// Try to get an existing multiton instance for a given <see cref="IMultitonRegistration"/>
@ -447,11 +451,11 @@ public class IocContainer : IIocContainer, IIocResolver
object scopeArgument = TryGetMultitonScopeArgument(registration, arguments);
//if a multiton for the given scope exists return it
var matchingMultitons = _multitons.FirstOrDefault(m => m.type == registration.ImplementationType && m.scope == registration.Scope); //get instances for the given type and scope (use implementation type to resolve the correct instance for multiple multiton registrations as well)
if (matchingMultitons == default)
bool foundMatchingMultitons = _multitons.TryGetValue((registration.ImplementationType, registration.Scope), out var matchingMultitons); //get instances for the given type and scope (use implementation type to resolve the correct instance for multiple multiton registrations as well)
if (!foundMatchingMultitons || matchingMultitons is null)
return null;
return matchingMultitons.instances.TryGetValue(scopeArgument, out object? instance) && instance != null ? instance : null;
return matchingMultitons.TryGetValue(scopeArgument, out object? instance) && instance != null ? instance : null;
}
/// <summary>
@ -487,17 +491,21 @@ public class IocContainer : IIocContainer, IIocResolver
object scopeArgument = TryGetMultitonScopeArgument(registration, arguments);
//if a multiton for the given scope exists return it
var matchingMultitons = _multitons.FirstOrDefault(m => m.type == registration.ImplementationType && m.scope == registration.Scope); //get instances for the given type and scope (use implementation type to resolve the correct instance for multiple multiton registrations as well)
if (matchingMultitons != default)
bool foundMatchingMultitons = _multitons.TryGetValue((registration.ImplementationType, registration.Scope), out var matchingMultitons);
if (foundMatchingMultitons && matchingMultitons is not null)
{
T createdInstance = Creator.CreateInstance<T>(registration.ImplementationType, arguments[1..]);
matchingMultitons.instances.Add(scopeArgument, createdInstance);
matchingMultitons.TryAdd(scopeArgument, createdInstance);
return createdInstance;
}
T newInstance = Creator.CreateInstance<T>(registration.ImplementationType, arguments[1..]);
_multitons.Add((registration.ImplementationType, registration.Scope, new Dictionary<object, object?> { { scopeArgument, newInstance } }));
ConcurrentDictionary<object,object?> concurrentDictionary = new();
concurrentDictionary.TryAdd(scopeArgument, newInstance);
_multitons.TryAdd((registration.ImplementationType, registration.Scope), concurrentDictionary);
return newInstance;
}
@ -758,14 +766,8 @@ public class IocContainer : IIocContainer, IIocResolver
IRegistration? registration = FindRegistration<T>();
if (registration is not IMultitonRegistration multitonRegistration)
return;
var multitonInstance = _multitons.FirstOrDefault(m => m.type == multitonRegistration.ImplementationType);
//it is allowed to clear a non existing multiton instance (don't throw an exception)
if (multitonInstance == default)
return;
_multitons.Remove(multitonInstance);
_multitons.Remove((multitonRegistration.ImplementationType, multitonRegistration.Scope), out _);
}
/// <summary>
@ -794,13 +796,13 @@ public class IocContainer : IIocContainer, IIocResolver
/// </summary>
public void Dispose()
{
_singletons.Where(s => FindRegistration(s.type) is IWithDisposeStrategyInternal {DisposeStrategy: DisposeStrategy.Container})
.Select(s => s.instance)
_singletons.Where(s => FindRegistration(s.Key) is IWithDisposeStrategyInternal {DisposeStrategy: DisposeStrategy.Container})
.Select(s => s.Value)
.OfType<IDisposable>()
.ForEach(d => d.Dispose());
_multitons.Where(m => FindRegistration(m.type) is IWithDisposeStrategyInternal {DisposeStrategy: DisposeStrategy.Container})
.SelectMany(m => m.instances)
_multitons.Where(m => FindRegistration(m.Key.type) is IWithDisposeStrategyInternal {DisposeStrategy: DisposeStrategy.Container})
.SelectMany(m => m.Value)
.Select(i => i.Value)
.OfType<IDisposable>()
.ForEach(d => d.Dispose());

10
LightweightIocContainer/LightweightIocContainer.xml
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@ -1946,6 +1946,11 @@
An internal placeholder that is used to hold factory methods for types that need to be resolved during the resolve process
</summary>
</member>
<member name="M:LightweightIocContainer.ResolvePlaceholders.InternalFactoryMethodPlaceholder`1.#ctor(LightweightIocContainer.Interfaces.Registrations.ISingleTypeRegistration{`0})">
<summary>
An internal placeholder that is used to hold factory methods for types that need to be resolved during the resolve process
</summary>
</member>
<member name="P:LightweightIocContainer.ResolvePlaceholders.InternalFactoryMethodPlaceholder`1.ResolvedType">
<summary>
The <see cref="T:System.Type"/> to be resolved
@ -1966,6 +1971,11 @@
An internal placeholder that is used to hold types that need to be resolved during the resolving process
</summary>
</member>
<member name="M:LightweightIocContainer.ResolvePlaceholders.InternalToBeResolvedPlaceholder.#ctor(System.Type,LightweightIocContainer.Interfaces.Registrations.IRegistration,System.Collections.Generic.List{System.Object})">
<summary>
An internal placeholder that is used to hold types that need to be resolved during the resolving process
</summary>
</member>
<member name="P:LightweightIocContainer.ResolvePlaceholders.InternalToBeResolvedPlaceholder.ResolvedType">
<summary>
The <see cref="T:System.Type"/> to be resolved

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