CommandBuffer Warnings Spamming the Console after upgrading to SystemBase

Hello Everyone,

i updated my JobComponentSystem to SystemBase and changed related Code.

Code (CSharp):

1. #if ECS_CODE
2. using CWBR.Client.Systems;
3. using CWBR.ClientAndServer.Components;
4. using CWBR.ClientAndServer.Constants;
5. using Unity.Burst;
6. using Unity.Collections;
7. using Unity.Entities;
8. using Unity.Jobs;
9. using Unity.Mathematics;
10. using UnityEngine;
11. using Utils._Math;
12.  
13. namespace CWBR.ClientAndServer.Systems
14. {
15.  
16.  
17.     [UpdateInGroup(typeof(InitializationSystemGroup))]
18.     [UpdateBefore(typeof(ProjectileSpawnerSystem))]
19.     [UpdateAfter(typeof(LocalPlayerInputTesting))] //TODO: Remove this line for Production (LocalPlayerInputTesting is just for testing)
20.     public class FiringSystem : SystemBase
21.     {
22.         EndSimulationEntityCommandBufferSystem m_EntityCommandBufferSystem;
23.         protected override void OnCreate()
24.         {
25.             m_EntityCommandBufferSystem = World.GetOrCreateSystem<EndSimulationEntityCommandBufferSystem>();
26.         }
27.        
28.         protected override void OnUpdate()
29.         {
30.             var commandBuffer = m_EntityCommandBufferSystem.CreateCommandBuffer();
31.  
32.            
33.             // Remove Firing Tag From Non Shooting Players
34.             Entities
35.                .WithAll<FiringTag>()
36.                .ForEach((Entity entity, in AimInput aimInput) => {
37.                    // Player is pushing Joystick enought to shoot
38.                    if (math.distance(float2.zero, aimInput.Value) - GameParams.PlayerDefaultMinimumJoystickPushToShoot < _MathUtils.Epsilon)
39.                        commandBuffer.RemoveComponent<FiringTag>(entity);
40.                }).Run();
41.  
42.  
43.  
44.             var deltaTime = Time.DeltaTime;
45.             // Manage CoolDown for Non Shooting Players
46.             // Add Firing Tag To Shooting players
47.             Entities
48.                 .WithAll<AliveTag>()
49.                 .WithAll<PlayerId>()
50.                 .WithNone<FiringTag>()
51.                 .ForEach((Entity entity, ref FiringCooldown firingCooldown, in AimInput aimInput) => {
52.  
53.                     // Player is pushing Joystick enought to shoot
54.                     if (math.distance(float2.zero, aimInput.Value) - GameParams.PlayerDefaultMinimumJoystickPushToShoot > _MathUtils.Epsilon)
55.                         commandBuffer.AddComponent(entity, new FiringTag { });
56.  
57.                     // Reset CoolDown in case user started shooting again and his not already waiting for another cooldown to complete
58.                     if (firingCooldown.CoolDown - GameParams.PlayerDefaultFiringCoolDown < _MathUtils.Epsilon)
59.                         firingCooldown.CoolDown = GameParams.PlayerDefaultFiringCoolDown;
60.                     else
61.                         firingCooldown.CoolDown -= deltaTime;
62.                 }).Run();
63.  
64.            
65.         }
66.     }
67. }
68. #endif

the Console is spammed by this Warining:

Code (CSharp):

1. Internal: deleting an allocation that is older than its permitted lifetime of 4 frames (age = 8)
2. Unity.Collections.LowLevel.Unsafe.UnsafeUtility:Free(Void*, Allocator)
3. Unity.Entities.EntityCommandBuffer:Dispose() (at Packages/com.unity.entities@0.10.0-preview.6/Unity.Entities/EntityCommandBuffer.cs:1017)
4. Unity.Entities.EntityCommandBufferSystem:FlushPendingBuffers(Boolean) (at Packages/com.unity.entities@0.10.0-preview.6/Unity.Entities/EntityCommandBufferSystem.cs:249)
5. Unity.Entities.EntityCommandBufferSystem:OnUpdate() (at Packages/com.unity.entities@0.10.0-preview.6/Unity.Entities/EntityCommandBufferSystem.cs:188)
6. Unity.Entities.ComponentSystem:Update() (at Packages/com.unity.entities@0.10.0-preview.6/Unity.Entities/ComponentSystem.cs:109)
7. Unity.Entities.ComponentSystemGroup:UpdateAllSystems() (at Packages/com.unity.entities@0.10.0-preview.6/Unity.Entities/ComponentSystemGroup.cs:240)
8. Unity.Entities.ComponentSystemGroup:OnUpdate() (at Packages/com.unity.entities@0.10.0-preview.6/Unity.Entities/ComponentSystemGroup.cs:219)
9. Unity.Entities.ComponentSystem:Update() (at Packages/com.unity.entities@0.10.0-preview.6/Unity.Entities/ComponentSystem.cs:109)
10. Unity.Entities.DummyDelegateWrapper:TriggerUpdate() (at Packages/com.unity.entities@0.10.0-preview.6/Unity.Entities/ScriptBehaviourUpdateOrder.cs:196)
11.  

 

I'm not 100% sure, but try using separate ECBs for different jobs.

 

this is not working :/

 

Don't you have to setup up the playback of the command buffer after running your foreach ?
Like we did befor with the ecbSystem.addJobHandleForProducer() method ?

 

I'm not sure but I think the PlayBack() function has a different utility than the addJobHandleForProducer().
From what I know, PlayBack() will use the EntityManager to execute all commands at the end of the system instead of using the existing barriers. this way Extra Sync points will be created.

 

Note: the command buffer is working correctly (Removing/Adding components)
but the spamming warnings are slowing the Game.

 

i found it!
i was using the EndSimulationEntityCommandBufferSystem inside a System running within the InitializationSystemGroup.