升级.net8

HT.Cloud.Code/Globals/GlobalContext.cs

@@ -5,6 +5,7 @@ using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using System;
+using System.Collections.Concurrent;
 using System.Diagnostics;
 using System.Linq;
 using System.Reflection;
@@ -13,24 +14,39 @@ using HT.Cloud.Code.Model;
 
 namespace HT.Cloud.Code
 {
-	public class GlobalContext
+	public static class GlobalContext
 	{
-		/// <summary>
-		/// 服务集合
-		/// </summary>
-		public static IServiceCollection Services { get; set; }
 
-		/// <summary>
-		/// 根服务
-		/// </summary>
-		public static IServiceProvider RootServices { get; set; }
+        /// <summary>
+        /// 构造函数
+        /// </summary>
+        static GlobalContext()
+        {
+            // 未托管的对象
+            UnmanagedObjects = new ConcurrentBag<IDisposable>();
+        }
+        /// <summary>
+        /// 服务集合
+        /// </summary>
+        public static IServiceCollection Services { get; set; }
+
+        /// <summary>
+        /// 根服务
+        /// </summary>
+        public static IServiceProvider RootServices { get; set; }
 
 		public static IConfiguration Configuration { get; set; }
 
 		public static IWebHostEnvironment HostingEnvironment { get; set; }
-		public static HttpContext HttpContext => RootServices?.GetService<IHttpContextAccessor>()?.HttpContext;
 
-		public static SystemConfig SystemConfig { get; set; }
+        /// <summary>
+        /// 未托管的对象集合
+        /// </summary>
+        public static readonly ConcurrentBag<IDisposable> UnmanagedObjects;
+
+        public static HttpContext HttpContext => RootServices?.GetService<IHttpContextAccessor>()?.HttpContext;
+
+        public static SystemConfig SystemConfig { get; set; }
 
         /// <summary>
         /// 获取请求生存周期的服务(未注册返回null)
@@ -91,27 +107,70 @@ namespace HT.Cloud.Code
 			{
 				return RootServices;
 			}
-			if (HttpContext?.RequestServices != null)
-			{
-				return HttpContext.RequestServices;
-			}
+            // 第二选择是获取 HttpContext 对象的 RequestServices
+            var httpContext = HttpContext;
+            if (httpContext?.RequestServices != null) return httpContext.RequestServices;
+            // 第三选择，创建新的作用域并返回服务提供器
             else if (RootServices != null)
             {
-                using var scoped = RootServices.CreateScope();
+                var scoped = RootServices.CreateScope();
+                UnmanagedObjects.Add(scoped);
                 return scoped.ServiceProvider;
             }
+            // 第四选择，构建新的服务对象（性能最差）
             else
             {
-                using var serviceProvider = Services.BuildServiceProvider();
+                var serviceProvider = Services.BuildServiceProvider();
+                UnmanagedObjects.Add(serviceProvider);
                 return serviceProvider;
             }
         }
+
+
+        /// <summary>
+        /// GC 回收默认间隔
+        /// </summary>
+        private const int GC_COLLECT_INTERVAL_SECONDS = 5;
+
+        /// <summary>
+        /// 记录最近 GC 回收时间
+        /// </summary>
+        private static DateTime? LastGCCollectTime { get; set; }
+
+        /// <summary>
+        /// 释放所有未托管的对象
+        /// </summary>
+        public static void DisposeUnmanagedObjects()
+        {
+            foreach (var dsp in UnmanagedObjects)
+            {
+                try
+                {
+                    dsp?.Dispose();
+                }
+                finally { }
+            }
+
+            // 强制手动回收 GC 内存
+            if (UnmanagedObjects.Any())
+            {
+                var nowTime = DateTime.UtcNow;
+                if ((LastGCCollectTime == null || (nowTime - LastGCCollectTime.Value).TotalSeconds > GC_COLLECT_INTERVAL_SECONDS))
+                {
+                    LastGCCollectTime = nowTime;
+                    GC.Collect();
+                    GC.WaitForPendingFinalizers();
+                }
+            }
+
+            UnmanagedObjects.Clear();
+        }
         /// <summary>
         /// 获取版本号
         /// </summary>
         /// <returns></returns>
         public static string GetVersion()
-		{
+        {
 			Version version = Assembly.GetEntryAssembly().GetName().Version;
 			return version.ToString();
 		}
@@ -145,7 +204,7 @@ namespace HT.Cloud.Code
 		{
 			int second = 365 * 24 * 60 * 60;
 			context.Context.Response.Headers.Add("Cache-Control", new[] { "public,max-age=" + second });
-			context.Context.Response.Headers.Add("Expires", new[] { DateTime.UtcNow.AddYears(1).ToString("R") }); // Format RFC1123
-		}
+            context.Context.Response.Headers.Add("Expires", new[] { DateTime.UtcNow.AddYears(1).ToString("R") }); // Format RFC1123
+        }
     }
 }