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Code Issues Releases Activity

Call syncpoint expiration callback outside of the lock (#1349)

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gdkchan 2020-07-03 19:22:06 -03:00 committed by GitHub
parent c70056bc76
commit 302d0f830c
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1 changed files with 37 additions and 8 deletions
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45
Ryujinx.Graphics.Gpu/Synchronization/Syncpoint.cs
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@ -13,16 +13,13 @@ namespace Ryujinx.Graphics.Gpu.Synchronization
public readonly uint Id;
// TODO: get rid of this lock
private object _listLock = new object();
/// <summary>
/// The value of the syncpoint.
/// </summary>
public uint Value => (uint)_storedValue;
// TODO: switch to something handling concurrency?
private List<SyncpointWaiterHandle> _waiters;
private readonly List<SyncpointWaiterHandle> _waiters;
public Syncpoint(uint id)
{
@ -39,7 +36,7 @@ namespace Ryujinx.Graphics.Gpu.Synchronization
/// <returns>The created SyncpointWaiterHandle object or null if already past threshold</returns>
public SyncpointWaiterHandle RegisterCallback(uint threshold, Action callback)
{
lock (_listLock)
lock (_waiters)
{
if (Value >= threshold)
{
@ -64,7 +61,7 @@ namespace Ryujinx.Graphics.Gpu.Synchronization
public void UnregisterCallback(SyncpointWaiterHandle waiterInformation)
{
lock (_listLock)
lock (_waiters)
{
_waiters.Remove(waiterInformation);
}
@ -78,7 +75,10 @@ namespace Ryujinx.Graphics.Gpu.Synchronization
{
uint currentValue = (uint)Interlocked.Increment(ref _storedValue);
lock (_listLock)
SyncpointWaiterHandle expired = null;
List<SyncpointWaiterHandle> expiredList = null;
lock (_waiters)
{
_waiters.RemoveAll(item =>
{
@ -86,13 +86,42 @@ namespace Ryujinx.Graphics.Gpu.Synchronization
if (isPastThreshold)
{
item.Callback();
if (expired == null)
{
expired = item;
}
else
{
if (expiredList == null)
{
expiredList = new List<SyncpointWaiterHandle>();
}
expiredList.Add(item);
}
}
return isPastThreshold;
});
}
// Call the callbacks as a separate step.
// As we don't know what the callback will be doing,
// and it could block execution for a indefinite amount of time,
// we can't call it inside the lock.
if (expired != null)
{
expired.Callback();
if (expiredList != null)
{
for (int i = 0; i < expiredList.Count; i++)
{
expiredList[i].Callback();
}
}
}
return currentValue;
}
}