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Merge pull request #7221 from stevemegson/v8/pr/ensure-application-url

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Thread safety in RuntimeState.EnsureApplicationUrl
This commit is contained in:
Shannon Deminick
2019-11-27 10:10:44 +11:00
committed by GitHub
parent 4b8ea94991 311e2afde0
commit 8f7615bc61
2 changed files with 33 additions and 9 deletions
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38
src/Umbraco.Core/Collections/ConcurrentHashSet.cs
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@@ -70,7 +70,23 @@ namespace Umbraco.Core.Collections
/// The number of elements contained in the <see cref="T:System.Collections.ICollection"/>.
/// </returns>
/// <filterpriority>2</filterpriority>
public int Count => GetThreadSafeClone().Count;
public int Count
{
get
{
try
{
_instanceLocker.EnterReadLock();
return _innerSet.Count;
}
finally
{
if (_instanceLocker.IsReadLockHeld)
_instanceLocker.ExitReadLock();
}
}
}
/// <summary>
/// Gets a value indicating whether the <see cref="T:System.Collections.Generic.ICollection`1"/> is read-only.
@@ -105,8 +121,7 @@ namespace Umbraco.Core.Collections
/// <returns></returns>
public bool TryAdd(T item)
{
var clone = GetThreadSafeClone();
if (clone.Contains(item)) return false;
if (Contains(item)) return false;
try
{
_instanceLocker.EnterWriteLock();
@@ -150,7 +165,16 @@ namespace Umbraco.Core.Collections
/// <param name="item">The object to locate in the <see cref="T:System.Collections.Generic.ICollection`1"/>.</param>
public bool Contains(T item)
{
return GetThreadSafeClone().Contains(item);
try
{
_instanceLocker.EnterReadLock();
return _innerSet.Contains(item);
}
finally
{
if (_instanceLocker.IsReadLockHeld)
_instanceLocker.ExitReadLock();
}
}
/// <summary>
@@ -168,13 +192,13 @@ namespace Umbraco.Core.Collections
HashSet<T> clone = null;
try
{
_instanceLocker.EnterWriteLock();
_instanceLocker.EnterReadLock();
clone = new HashSet<T>(_innerSet, _innerSet.Comparer);
}
finally
{
if (_instanceLocker.IsWriteLockHeld)
_instanceLocker.ExitWriteLock();
if (_instanceLocker.IsReadLockHeld)
_instanceLocker.ExitReadLock();
}
return clone;
}