using System;
using System.Collections.Generic;
using System.Threading;
using UnityEngine.Scripting;

namespace UnityEngine
{
	// Token: 0x0200048C RID: 1164
	internal sealed class UnitySynchronizationContext : SynchronizationContext
	{
		// Token: 0x06003A17 RID: 14871 RVA: 0x00065634 File Offset: 0x00063834
		public override void Send(SendOrPostCallback callback, object state)
		{
			callback(state);
		}

		// Token: 0x06003A18 RID: 14872 RVA: 0x00065640 File Offset: 0x00063840
		public override void Post(SendOrPostCallback callback, object state)
		{
			object asyncWorkQueue = this.m_AsyncWorkQueue;
			lock (asyncWorkQueue)
			{
				this.m_AsyncWorkQueue.Enqueue(new UnitySynchronizationContext.WorkRequest(callback, state));
			}
		}

		// Token: 0x06003A19 RID: 14873 RVA: 0x0006568C File Offset: 0x0006388C
		private void Exec()
		{
			object asyncWorkQueue = this.m_AsyncWorkQueue;
			lock (asyncWorkQueue)
			{
				while (this.m_AsyncWorkQueue.Count > 0)
				{
					this.m_AsyncWorkQueue.Dequeue().Invoke();
				}
			}
		}

		// Token: 0x06003A1A RID: 14874 RVA: 0x000656F0 File Offset: 0x000638F0
		[RequiredByNativeCode]
		private static void InitializeSynchronizationContext()
		{
			if (SynchronizationContext.Current == null)
			{
				SynchronizationContext.SetSynchronizationContext(new UnitySynchronizationContext());
			}
		}

		// Token: 0x06003A1B RID: 14875 RVA: 0x00065708 File Offset: 0x00063908
		[RequiredByNativeCode]
		private static void ExecuteTasks()
		{
			UnitySynchronizationContext unitySynchronizationContext = SynchronizationContext.Current as UnitySynchronizationContext;
			if (unitySynchronizationContext != null)
			{
				unitySynchronizationContext.Exec();
			}
		}

		// Token: 0x04001197 RID: 4503
		private const int kAwqInitialCapacity = 20;

		// Token: 0x04001198 RID: 4504
		private readonly Queue<UnitySynchronizationContext.WorkRequest> m_AsyncWorkQueue = new Queue<UnitySynchronizationContext.WorkRequest>(20);

		// Token: 0x0200048D RID: 1165
		private struct WorkRequest
		{
			// Token: 0x06003A1C RID: 14876 RVA: 0x00065730 File Offset: 0x00063930
			public WorkRequest(SendOrPostCallback callback, object state)
			{
				this.m_DelagateCallback = callback;
				this.m_DelagateState = state;
			}

			// Token: 0x06003A1D RID: 14877 RVA: 0x00065744 File Offset: 0x00063944
			public void Invoke()
			{
				this.m_DelagateCallback(this.m_DelagateState);
			}

			// Token: 0x04001199 RID: 4505
			private readonly SendOrPostCallback m_DelagateCallback;

			// Token: 0x0400119A RID: 4506
			private readonly object m_DelagateState;
		}
	}
}