{"id":9,"date":"2026-06-24T09:23:40","date_gmt":"2026-06-24T01:23:40","guid":{"rendered":"https:\/\/blog.aics.online\/?p=9"},"modified":"2026-06-24T09:23:40","modified_gmt":"2026-06-24T01:23:40","slug":"net-gc-%e5%85%a8%e7%bb%b4%e5%ba%a6%e4%bc%98%e5%8c%96%e6%8a%80%e6%9c%af%e6%b8%85%e5%8d%95","status":"publish","type":"post","link":"https:\/\/blog.aics.online\/?p=9","title":{"rendered":".NET GC \u5168\u7ef4\u5ea6\u4f18\u5316\u6280\u672f\u6e05\u5355"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\" id=\"%e4%b8%80%e3%80%81%e5%bc%b1%e5%bc%95%e7%94%a8%e4%bd%93%e7%b3%bb\">\u4e00\u3001\u5f31\u5f15\u7528\u4f53\u7cfb<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-%e5%9f%ba%e7%a1%80%e5%bc%b1%e5%bc%95%e7%94%a8\">1. \u57fa\u7840\u5f31\u5f15\u7528<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><code>WeakReference<\/code> \/ <code>WeakReference&lt;T&gt;<\/code>\n<ul class=\"wp-block-list\">\n<li>\u77ed\u5f31\u5f15\u7528 (trackResurrection=false)\uff1a\u63a8\u8350\uff0cFinalize \u6267\u884c\u540e\u76f4\u63a5\u5931\u6548\uff1b\u957f\u5f31\u5f15\u7528\u6781\u5c11\u7528\uff0c\u5bb9\u6613\u590d\u6d3b\u6cc4\u6f0f<\/li>\n\n\n\n<li>\u7528\u9014\uff1a\u5b9e\u73b0\u5f31\u4e8b\u4ef6\u8f6c\u53d1\u5668\u3001\u4e34\u65f6\u7f13\u5b58\u3001\u4e0d\u963b\u788d GC \u7684\u5bf9\u8c61\u8ddf\u8e2a<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><code>SoftReference&lt;T&gt;<\/code> (.NET5+) \u8f6f\u5f15\u7528\n<ul class=\"wp-block-list\">\n<li>GC \u5185\u5b58\u5145\u8db3\u65f6\u4fdd\u7559\u5bf9\u8c61\uff0c\u5185\u5b58\u538b\u529b\u5927\u81ea\u52a8\u56de\u6536\uff1b\u9002\u5408\u5927\u56fe\u3001\u5927\u96c6\u5408\u7f13\u5b58<\/li>\n\n\n\n<li>\u4e0d\u9002\u5408\u4e8b\u4ef6\u76d1\u542c\uff0c\u9002\u5408\u8d44\u6e90\u7f13\u5b58\u5c42<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-clr-%e5%86%85%e7%bd%ae%e5%bc%b1%e9%99%84%e5%8a%a0%e5%ae%b9%e5%99%a8%ef%bc%88%e9%87%8d%e7%82%b9%e4%bc%98%e5%8c%96%e4%bd%a0-watcher-%e7%9a%84-hashset%ef%bc%89\">2. CLR \u5185\u7f6e\u5f31\u9644\u52a0\u5bb9\u5668\uff08\u91cd\u70b9\u4f18\u5316\u4f60 Watcher \u7684 HashSet\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>ConditionalWeakTable&lt;TKey,TValue&gt;<\/code><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Key \u662f<strong>\u5f31\u5f15\u7528<\/strong>\uff0cKey \u65e0\u5176\u4ed6\u5f15\u7528\u65f6\uff0c\u6761\u76ee\u81ea\u52a8\u88ab\u6e05\u7406\uff0c\u4e0d\u4f1a\u50cf HashSet \u5f3a\u6301\u6709\u5bf9\u8c61\u9020\u6210 GC \u6ede\u7559<\/li>\n\n\n\n<li>\u4f60\u7684\u573a\u666f\u4f18\u5316\uff1a\u66ff\u6362 <code>HashSet&lt;object&gt; _trackedObjects<\/code> \u8bb0\u5f55\u5df2\u7ed1\u5b9a\u6a21\u578b\uff0c\u6a21\u578b\u91ca\u653e\u540e\u81ea\u52a8\u6e05\u9664\u7ed1\u5b9a\u6807\u8bb0\uff0c\u65e0\u5185\u5b58\u6ede\u7559<\/li>\n\n\n\n<li>\u7ebf\u7a0b\u5b89\u5168\u3001\u65e0\u5185\u5b58\u6cc4\u6f0f\u3001\u6027\u80fd\u6781\u9ad8\uff0cCLR \u539f\u751f\u5b9e\u73b0<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-%e7%ac%ac%e4%b8%89%e6%96%b9%e5%bc%b1%e9%9b%86%e5%90%88\">3. \u7b2c\u4e09\u65b9\u5f31\u96c6\u5408<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f31 Key \u5b57\u5178\u3001\u5f31 Value \u7f13\u5b58\uff08\u5982 <code>WeakDictionary<\/code>\uff09<\/li>\n\n\n\n<li>CommunityToolkit \u5f31\u4e8b\u4ef6\u76d1\u542c <code>WeakEventListener<\/code>\uff1a\u5c01\u88c5 WeakReference\uff0c\u81ea\u52a8\u7ba1\u7406\u4e8b\u4ef6\u8ba2\u9605\u751f\u547d\u5468\u671f<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"%e4%ba%8c%e3%80%81%e7%bb%88%e7%bb%93%e5%99%a8-finalizer-idisposable-%e8%b5%84%e6%ba%90%e9%87%8a%e6%94%be%e4%bc%98%e5%8c%96%ef%bc%88%e5%87%8f%e5%b0%91-gc-%e5%8e%8b%e5%8a%9b%ef%bc%89\">\u4e8c\u3001\u7ec8\u7ed3\u5668 (Finalizer)\/IDisposable \u8d44\u6e90\u91ca\u653e\u4f18\u5316\uff08\u51cf\u5c11 GC \u538b\u529b\uff09<\/h3>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-%e6%a0%87%e5%87%86%e9%87%8a%e6%94%be%e6%a8%a1%e5%bc%8f%ef%bc%88idisposable-finalizer%ef%bc%89\">1. \u6807\u51c6\u91ca\u653e\u6a21\u5f0f\uff08IDisposable + ~Finalizer\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class Watcher : IDisposable\n{\n    private bool _disposed;\n    public void Dispose()\n    {\n        Dispose(true);\n        GC.SuppressFinalize(this); \/\/ \u5173\u952e\uff1a\u544a\u77e5GC\u4e0d\u7528\u6267\u884c\u7ec8\u7ed3\u5668\uff0c\u51cf\u5c11\u4e00\u6b21GC\u626b\u63cf\n    }\n    protected virtual void Dispose(bool disposing)\n    {\n        if(_disposed) return;\n        if(disposing)\n        {\n            \/\/ \u6258\u7ba1\u8d44\u6e90\uff1a\u89e3\u7ed1\u6240\u6709\u5f31\u4e8b\u4ef6\u3001\u6e05\u7a7a\u8ddf\u8e2a\u8868\n        }\n        \/\/ \u975e\u6258\u7ba1\u8d44\u6e90\u91ca\u653e\n        _disposed = true;\n    }\n    ~Watcher() =&gt; Dispose(false);\n}\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f18\u5316\u70b9\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>GC.SuppressFinalize(this)<\/code>\uff1a\u8df3\u8fc7\u7ec8\u7ed3\u961f\u5217\uff0c\u51cf\u5c11 GC \u6807\u8bb0\u9636\u6bb5\u5f00\u9500<\/li>\n\n\n\n<li>\u533a\u5206\u6258\u7ba1 \/ \u975e\u6258\u7ba1\u8d44\u6e90\uff0c\u975e\u6258\u7ba1\u624d\u4fdd\u7559\u7ec8\u7ed3\u5668\uff1b\u7eaf\u6258\u7ba1\u5bf9\u8c61\u76f4\u63a5\u5220\u9664\uff5eFinalizer<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-%e7%bb%88%e7%bb%93%e5%99%a8%e9%81%bf%e5%9d%91%e4%bc%98%e5%8c%96\">2. \u7ec8\u7ed3\u5668\u907f\u5751\u4f18\u5316<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u7ec8\u7ed3\u5668\u5185<strong>\u4e0d\u8981\u8bbf\u95ee\u5176\u4ed6\u6258\u7ba1\u5bf9\u8c61<\/strong>\uff08\u987a\u5e8f\u4e0d\u786e\u5b9a\uff0c\u53ef\u80fd\u5df2\u56de\u6536\uff09<\/li>\n\n\n\n<li>\u7981\u6b62\u5728 Finalizer \u4e2d\u521b\u5efa\u65b0\u5bf9\u8c61\u3001\u8ba2\u9605\u4e8b\u4ef6<\/li>\n\n\n\n<li>\u5c3d\u91cf\u5c11\u5199\u7ec8\u7ed3\u5668\uff0c\u4f18\u5148\u624b\u52a8 Dispose \u91ca\u653e\u8d44\u6e90<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-%e4%ba%8b%e4%bb%b6%e6%89%8b%e5%8a%a8%e8%a7%a3%e7%bb%91%e5%85%9c%e5%ba%95\">3. \u4e8b\u4ef6\u624b\u52a8\u89e3\u7ed1\u515c\u5e95<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5373\u4f7f\u4f7f\u7528\u5f31\u4e8b\u4ef6\uff0cViewModel\/Watcher \u9500\u6bc1\u65f6\u624b\u52a8 <code>RemoveHandler<\/code> \u4e3b\u52a8\u89e3\u7ed1\uff0c\u51cf\u5c11 GC \u626b\u63cf\u5de5\u4f5c\u91cf\uff0c\u53cc\u91cd\u4fdd\u9669\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%e4%b8%89%e3%80%81%e5%87%8f%e5%b0%91-gc-%e5%88%86%e9%85%8d%ef%bc%88%e6%9c%80%e6%a0%b8%e5%bf%83%e4%bc%98%e5%8c%96%ef%bc%9a%e5%b0%91%e4%ba%a7%e7%94%9f%e5%9e%83%e5%9c%be%ef%bc%8cgc-%e8%87%aa%e7%84%b6\">\u4e09\u3001\u51cf\u5c11 GC \u5206\u914d\uff08\u6700\u6838\u5fc3\u4f18\u5316\uff1a\u5c11\u4ea7\u751f\u5783\u573e\uff0cGC \u81ea\u7136\u4e0d\u7528\u9891\u7e41\u56de\u6536\uff09<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-%e9%81%bf%e5%85%8d%e9%ab%98%e9%a2%91%e4%b8%b4%e6%97%b6%e5%af%b9%e8%b1%a1%e5%88%86%e9%85%8d\">1. \u907f\u514d\u9ad8\u9891\u4e34\u65f6\u5bf9\u8c61\u5206\u914d<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u503c\u7c7b\u578b\u4f18\u5148<\/strong>\uff1a\u5c0f\u6570\u636e\u7528 struct\uff0c\u4e0d\u4ea7\u751f\u5806\u5206\u914d\uff1b\u907f\u514d\u9891\u7e41\u88c5\u7bb1\u62c6\u7bb1\n<ul class=\"wp-block-list\">\n<li>\u4f8b\uff1a\u53d8\u66f4\u8def\u5f84\u53c2\u6570\u3001\u5c0f\u578b ChangeArgs \u7ed3\u6784\u4f53\u6539\u7528 struct\uff0c\u51cf\u5c11\u5806 GC<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5bf9\u8c61\u6c60 ObjectPool&lt;T&gt;<\/strong> \u9ad8\u9891\u521b\u5efa\u9500\u6bc1\u7684\u5bf9\u8c61\uff08\u53d8\u66f4\u53c2\u6570\u3001\u8f6c\u53d1\u5668\u3001DTO\uff09\u590d\u7528\uff0c\u5f7b\u5e95\u6d88\u9664 GC \u5206\u914d csharp\u8fd0\u884c<code>var pool = ObjectPool&lt;ChangeArgs&gt;.Create(); var args = pool.Get(); \/\/ \u4e1a\u52a1\u903b\u8f91 pool.Return(args);<\/code><\/li>\n\n\n\n<li>\u5b57\u7b26\u4e32\u4f18\u5316\n<ul class=\"wp-block-list\">\n<li>\u9ad8\u9891\u62fc\u63a5\u7528 <code>StringBuilder<\/code>\uff1b\u56fa\u5b9a\u5b57\u7b26\u4e32 <code>string.Intern<\/code> \u9a7b\u7559<\/li>\n\n\n\n<li>\u907f\u514d\u6bcf\u6b21\u53d8\u66f4\u62fc\u63a5\u957f\u8def\u5f84\u5b57\u7b26\u4e32\uff08\u7f13\u5b58\u8def\u5f84\u3001\u5206\u6bb5\u590d\u7528\uff09<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u6570\u7ec4 \/ \u96c6\u5408\u590d\u7528 \u4e0d\u8981\u9891\u7e41 new List&lt;T&gt;\u3001\u6570\u7ec4\uff1b\u63d0\u524d\u6269\u5bb9\u3001Clear \u590d\u7528\uff0c\u51cf\u5c11\u5806\u788e\u7247<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-%e9%81%bf%e5%85%8d%e9%97%ad%e5%8c%85%e6%8d%95%e8%8e%b7%e5%bc%ba%e5%bc%95%e7%94%a8%ef%bc%88%e9%ab%98%e9%a2%91%e5%86%85%e5%ad%98%e6%b3%84%e6%bc%8f%e6%ba%90%ef%bc%89\">2. \u907f\u514d\u95ed\u5305\u6355\u83b7\u5f3a\u5f15\u7528\uff08\u9ad8\u9891\u5185\u5b58\u6cc4\u6f0f\u6e90\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u574f\uff1alambda\u6355\u83b7this\uff0c\u4e8b\u4ef6\u6e90\u5f3a\u6301\u6709Watcher\uff0cGC\u65e0\u6cd5\u56de\u6536\nmodel.PropertyChanged += (s,e)=&gt; OnChange();\n\n\/\/ \u597d\uff1a\u7528\u5f31\u4e8b\u4ef6\u8f6c\u53d1\u5668\u5207\u65ad\u5f3a\u5f15\u7528\u94fe\uff0c\u5c31\u662f\u6211\u4eec\u81ea\u5236WeakEventManager\u7684\u6838\u5fc3\u4ef7\u503c\nWeakEventManager.AddHandler(model, OnChange);\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-%e7%a6%81%e7%94%a8%e4%b8%8d%e5%bf%85%e8%a6%81%e7%9a%84%e9%9a%90%e5%bc%8f%e8%a3%85%e7%ae%b1\">3. \u7981\u7528\u4e0d\u5fc5\u8981\u7684\u9690\u5f0f\u88c5\u7bb1<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u53cd\u5c04\u3001\u52a8\u6001\u8c03\u7528\u3001object \u4f20\u53c2\u6781\u6613\u88c5\u7bb1\uff1b\u80fd\u7528\u6cdb\u578b\u5c31\u4e0d\u7528 object\uff0c\u51cf\u5c11\u4e34\u65f6\u5806\u5bf9\u8c61\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%e5%9b%9b%e3%80%81gc-%e6%89%8b%e5%8a%a8%e6%8e%a7%e5%88%b6-api%ef%bc%88%e7%b2%be%e7%bb%86%e8%b0%83%e6%8e%a7%e5%9b%9e%e6%94%b6%e6%97%b6%e6%9c%ba%ef%bc%8c%e8%b0%a8%e6%85%8e%e4%bd%bf%e7%94%a8%ef%bc%89\">\u56db\u3001GC \u624b\u52a8\u63a7\u5236 API\uff08\u7cbe\u7ec6\u8c03\u63a7\u56de\u6536\u65f6\u673a\uff0c\u8c28\u614e\u4f7f\u7528\uff09<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><code>GC.SuppressFinalize(obj)<\/code> \u91ca\u653e\u6258\u7ba1\u8d44\u6e90\u540e\u8c03\u7528\uff0c\u8df3\u8fc7\u7ec8\u7ed3\u961f\u5217\uff0c\u964d\u4f4e GC \u6807\u8bb0\u6210\u672c<\/li>\n\n\n\n<li><code>GC.ReRegisterForFinalize(obj)<\/code> \u6781\u5c11\u7528\uff0c\u8d44\u6e90\u6062\u590d\u573a\u666f\u91cd\u65b0\u542f\u7528\u7ec8\u7ed3\u5668<\/li>\n\n\n\n<li><code>GC.Collect(int generation, GCCollectionMode)<\/code> \u5f3a\u5236 GC \u56de\u6536\uff0c\u4ec5\u7528\u4e8e\u6279\u91cf\u91ca\u653e\u5927\u91cf\u5bf9\u8c61\u540e\uff0c<strong>\u4e1a\u52a1\u4e3b\u7ebf\u7a0b\u7981\u6b62\u9891\u7e41\u8c03\u7528<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u6a21\u5f0f\uff1a<code>GCCollectionMode.Optimized<\/code> \u6309\u9700\u56de\u6536\uff1b<code>Forced<\/code> \u5f3a\u5236\u5b8c\u6574\u56de\u6536<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><code>GC.WaitForPendingFinalizers()<\/code> \u7b49\u5f85\u7ec8\u7ed3\u5668\u5168\u90e8\u6267\u884c\u5b8c\u6210\uff0c\u914d\u5408 Collect \u6279\u91cf\u6e05\u7406\u8d44\u6e90<\/li>\n\n\n\n<li><code>GC.TryStartNoGCRegion(long totalBytes)<\/code> \/ <code>GC.EndNoGCRegion()<\/code><strong>\u65e0 GC \u533a\u57df<\/strong>\uff1a\u9ad8\u9891\u5b9e\u65f6\u903b\u8f91\uff08\u4e0a\u4f4d\u673a\u91c7\u96c6\u3001\u5de5\u4e1a\u76d1\u63a7\uff09\u5185\u7981\u6b62 GC \u6682\u505c\uff0c\u9002\u5408\u4f60\u7684 Server \u573a\u666f\n<ul class=\"wp-block-list\">\n<li>\u9884\u5148\u9884\u7559\u5185\u5b58\uff0c\u4ee3\u7801\u5757\u5185\u4e0d\u89e6\u53d1 GC \u505c\u987f\uff0c\u63d0\u5347\u5b9e\u65f6\u6027<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%e4%ba%94%e3%80%81%e5%88%86%e4%bb%a3-gc-%e4%b8%8e%e5%86%85%e5%ad%98%e5%b8%83%e5%b1%80%e4%bc%98%e5%8c%96%ef%bc%88%e5%87%8f%e5%b0%91-full-gc%ef%bc%89\">\u4e94\u3001\u5206\u4ee3 GC \u4e0e\u5185\u5b58\u5e03\u5c40\u4f18\u5316\uff08\u51cf\u5c11 Full GC\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">.NET GC \u5206 0\/1\/2 \u4ee3\uff0c0 \u4ee3\u56de\u6536\u6700\u5feb\uff0c2 \u4ee3 Full GC \u6700\u6162\uff08\u5361\u987f\u6839\u6e90\uff09<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u77ed\u671f\u5bf9\u8c61\u653e 0 \u4ee3<\/strong>\uff1a\u4e34\u65f6\u53c2\u6570\u3001\u5c40\u90e8\u53d8\u91cf\uff0c\u7528\u5b8c\u7acb\u523b\u5931\u6548\uff0c0 \u4ee3\u5feb\u901f\u56de\u6536<\/li>\n\n\n\n<li><strong>\u957f\u671f\u5bf9\u8c61\u63d0\u5347\u5230\u8001\u5e74\u4ee3\u4f18\u5316<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u957f\u671f\u5b58\u6d3b\u7684\u6a21\u578b\u6839\u5bf9\u8c61\uff08Root \u5b9e\u4f53\uff09\u4e00\u6b21\u6027\u521b\u5efa\uff0c\u4e0d\u9891\u7e41\u91cd\u5efa\uff0c\u907f\u514d\u9891\u7e41\u664b\u5347 2 \u4ee3<\/li>\n\n\n\n<li>\u5927\u5bf9\u8c61 (&gt;85000 \u5b57\u8282) \u76f4\u63a5\u8fdb\u5927\u5bf9\u8c61\u5806 LOH\uff0cLOH \u9ed8\u8ba4\u4e0d\u538b\u7f29\uff0c\u5bb9\u6613\u788e\u7247<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>LOH \u5927\u5bf9\u8c61\u5806\u4f18\u5316\n<ul class=\"wp-block-list\">\n<li>.NET4.6.2+\uff1a\u5f00\u542f LOH \u538b\u7f29 <code>AppContext.SetSwitch(\"System.GC.ConcurrentLargeObjectHeap\", true)<\/code><\/li>\n\n\n\n<li>\u5927\u6570\u7ec4\u3001\u5927\u96c6\u5408\u4f7f\u7528\u5bf9\u8c61\u6c60\u590d\u7528\uff0c\u907f\u514d\u9891\u7e41\u5206\u914d\u91ca\u653e LOH \u788e\u7247<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u5e76\u53d1 GC \/ \u540e\u53f0 GC \u914d\u7f6e xml<code>&lt;runtime&gt; &lt;gcConcurrent enabled=\"true\"\/&gt; &lt;!-- \u540e\u53f0GC\uff0c\u51cf\u5c11UI\/\u4e1a\u52a1\u5361\u987f --&gt; &lt;\/runtime&gt;<\/code> \u4e0a\u4f4d\u673a\u3001\u670d\u52a1\u7aef\u7a0b\u5e8f\u5fc5\u987b\u5f00\u542f\uff0cGC \u56de\u6536\u65f6\u4e0d\u963b\u585e\u5de5\u4f5c\u7ebf\u7a0b<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%e5%85%ad%e3%80%81%e5%86%85%e5%ad%98%e7%a2%8e%e7%89%87%e4%bc%98%e5%8c%96%ef%bc%88%e5%87%8f%e5%b0%91-gc-%e5%8e%8b%e7%bc%a9%e5%bc%80%e9%94%80%ef%bc%89\">\u516d\u3001\u5185\u5b58\u788e\u7247\u4f18\u5316\uff08\u51cf\u5c11 GC \u538b\u7f29\u5f00\u9500\uff09<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u907f\u514d\u9891\u7e41\u5206\u914d \/ \u91ca\u653e\u5927\u5c0f\u5dee\u5f02\u5de8\u5927\u7684\u5bf9\u8c61\uff0c\u4ea7\u751f\u7a7a\u6d1e\u788e\u7247<\/li>\n\n\n\n<li>\u8fde\u7eed\u6279\u91cf\u521b\u5efa\u540c\u5c3a\u5bf8\u5bf9\u8c61\uff0c\u65b9\u4fbf GC \u5408\u5e76\u7a7a\u95f2\u5185\u5b58<\/li>\n\n\n\n<li>\u957f\u671f\u8fd0\u884c\u670d\u52a1\u5b9a\u65f6\u6279\u91cf\u91ca\u653e\u4e34\u65f6\u8d44\u6e90\uff0c\u4e3b\u52a8\u89e6\u53d1\u4e00\u6b21\u540e\u53f0 GC \u6574\u7406\u5185\u5b58<\/li>\n\n\n\n<li>\u7ed3\u6784\u4f53\u3001\u5c0f\u578b\u7c7b\u578b\u6808\u5206\u914d\uff0c\u4e0d\u5360\u7528\u5806\u5185\u5b58<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%e4%b8%83%e3%80%81%e5%bc%b1%e4%ba%8b%e4%bb%b6-%e5%a4%9a%e5%b1%82%e6%a8%a1%e5%9e%8b%e5%9c%ba%e6%99%af%e4%b8%93%e5%b1%9e-gc-%e4%bc%98%e5%8c%96%e6%96%b9%e6%a1%88%ef%bc%88%e8%b4%b4%e5%90%88%e4%bd%a0\">\u4e03\u3001\u5f31\u4e8b\u4ef6 \/ \u591a\u5c42\u6a21\u578b\u573a\u666f\u4e13\u5c5e GC \u4f18\u5316\u65b9\u6848\uff08\u8d34\u5408\u4f60\u7684\u4ee3\u7801\uff09<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-%e8%b7%9f%e8%b8%aa%e5%ae%b9%e5%99%a8%e6%9b%bf%e6%8d%a2\">1. \u8ddf\u8e2a\u5bb9\u5668\u66ff\u6362<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e9f\u5f03 <code>HashSet&lt;object&gt;<\/code> \u2192 <code>ConditionalWeakTable&lt;object, bool&gt;<\/code><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>HashSet \u5f3a\u6301\u6709\u6a21\u578b\u5bf9\u8c61\uff0c\u6a21\u578b\u65e0\u4e1a\u52a1\u5f15\u7528\u65f6\u4f9d\u7136\u5361\u5728 2 \u4ee3\uff0c\u65e0\u6cd5 GC<\/li>\n\n\n\n<li>ConditionalWeakTable \u5f31\u6301\u6709\uff0c\u6a21\u578b\u91ca\u653e\u81ea\u52a8\u6e05\u9664\u8bb0\u5f55\uff0c\u65e0\u6ede\u7559<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-%e5%bc%b1%e4%ba%8b%e4%bb%b6%e4%bb%a3%e6%9b%bf%e5%8e%9f%e7%94%9f-%e5%bc%ba%e8%ae%a2%e9%98%85\">2. \u5f31\u4e8b\u4ef6\u4ee3\u66ff\u539f\u751f += \u5f3a\u8ba2\u9605<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5207\u65ad \u6570\u636e Model \u2192 Watcher \u7684\u5f3a\u5f15\u7528\u94fe\uff0cWatcher \u53ef\u6b63\u5e38 GC<\/li>\n\n\n\n<li>\u914d\u5957\uff1a\u8f6c\u53d1\u5668\u5185\u90e8\u4f7f\u7528<code>WeakReference&lt;T&gt;<\/code>\uff0c\u4e0d\u5ef6\u957f\u76d1\u542c\u5bf9\u8c61\u751f\u547d\u5468\u671f<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-%e5%8f%98%e6%9b%b4%e5%8f%82%e6%95%b0%e7%bb%93%e6%9e%84%e4%bd%93%e5%8c%96\">3. \u53d8\u66f4\u53c2\u6570\u7ed3\u6784\u4f53\u5316<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u628a <code>ChangeArgs<\/code> class \u6539\u4e3a <code>readonly struct<\/code>\uff0c\u5b8c\u5168\u6d88\u9664\u5806\u5206\u914d\uff0c\u96f6 GC<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public readonly struct ChangeArgs\n{\n    public string FullPath { get; }\n    public object Source { get; }\n    public string PropertyName { get; }\n    public ChangeArgs(string path, object src, string prop)\n    {\n        FullPath = path;\n        Source = src;\n        PropertyName = prop;\n    }\n}\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"4-%e9%9b%86%e5%90%88%e5%85%83%e7%b4%a0%e7%9b%91%e5%90%ac%e8%87%aa%e5%8a%a8%e6%b8%85%e7%90%86\">4. \u96c6\u5408\u5143\u7d20\u76d1\u542c\u81ea\u52a8\u6e05\u7406<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u96c6\u5408\u5143\u7d20\u79fb\u9664\u65f6\uff0c\u65e0\u9700\u624b\u52a8\u89e3\u7ed1\uff0c\u5f31\u8f6c\u53d1\u5668\u5728 GC \u65f6\u81ea\u52a8\u5931\u6548\uff1b\u914d\u5408 ConditionalWeakTable \u81ea\u52a8\u6e05\u7406\u7ed1\u5b9a\u6807\u8bb0\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%e5%85%ab%e3%80%81%e5%86%85%e5%ad%98%e8%af%8a%e6%96%ad-gc-%e7%9b%91%e6%8e%a7%e5%b7%a5%e5%85%b7%ef%bc%88%e5%ae%9a%e4%bd%8d-gc-%e7%93%b6%e9%a2%88%ef%bc%89\">\u516b\u3001\u5185\u5b58\u8bca\u65ad &amp; GC \u76d1\u63a7\u5de5\u5177\uff08\u5b9a\u4f4d GC \u74f6\u9888\uff09<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8fd0\u884c\u65f6\u76d1\u63a7 API csharp\u8fd0\u884c<code>GC.GetGeneration(obj); \/\/ \u83b7\u53d6\u5bf9\u8c61\u5206\u4ee3 GC.GetTotalMemory(false); \/\/ \u5f53\u524d\u5806\u5185\u5b58<\/code><\/li>\n\n\n\n<li>\u8bca\u65ad\u5de5\u5177\n<ul class=\"wp-block-list\">\n<li>Visual Studio \u5185\u5b58\u63a2\u67e5\u5668\u3001GC \u8ddf\u8e2a<\/li>\n\n\n\n<li>PerfView\uff1a\u5206\u6790 GC \u505c\u987f\u3001\u5206\u914d\u3001FullGC \u9891\u7387<\/li>\n\n\n\n<li>dotnet-counters\uff1a\u547d\u4ee4\u884c\u5b9e\u65f6\u76d1\u63a7 GC \u901f\u7387\u3001\u4ee3\u56de\u6536\u6b21\u6570<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u65e5\u5fd7\u57cb\u70b9\uff1a\u8bb0\u5f55 GC \u56de\u6536\u6b21\u6570\u3001\u505c\u987f\u65f6\u95f4\uff0c\u7ebf\u4e0a\u5b9a\u4f4d\u5361\u987f<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%e4%b9%9d%e3%80%81%e9%ab%98%e7%ba%a7%ef%bc%9a%e5%8e%9f%e7%94%9f%e4%ba%92%e6%93%8d%e4%bd%9c-%e9%9d%9e%e6%89%98%e7%ae%a1%e5%86%85%e5%ad%98-gc-%e4%bc%98%e5%8c%96\">\u4e5d\u3001\u9ad8\u7ea7\uff1a\u539f\u751f\u4e92\u64cd\u4f5c \/ \u975e\u6258\u7ba1\u5185\u5b58 GC \u4f18\u5316<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><code>System.Buffers.UnmanagedMemoryAllocator<\/code> \u975e\u6258\u7ba1\u5185\u5b58\u624b\u52a8\u7ba1\u7406\uff0c\u4e0d\u5360\u7528 GC \u5806<\/li>\n\n\n\n<li><code>SafeHandle<\/code> \u5c01\u88c5\u975e\u6258\u7ba1\u53e5\u67c4\uff0c\u81ea\u52a8\u7ec8\u7ed3\u91ca\u653e\uff0c\u907f\u514d\u5185\u5b58\u6cc4\u6f0f<\/li>\n\n\n\n<li>\u4e92\u64cd\u4f5c Marshal \u5206\u914d\u7684\u5185\u5b58\uff0c\u5fc5\u987b\u624b\u52a8 Free\uff0cGC \u4e0d\u4f1a\u81ea\u52a8\u56de\u6536<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%e5%8d%81%e3%80%81%e6%a0%b8%e5%bf%83%e9%81%bf%e5%9d%91%ef%bc%88%e6%9e%81%e6%98%93%e9%80%a0%e6%88%90-gc-%e5%8e%8b%e5%8a%9b-%e5%86%85%e5%ad%98%e6%b3%84%e6%bc%8f%ef%bc%89\">\u5341\u3001\u6838\u5fc3\u907f\u5751\uff08\u6781\u6613\u9020\u6210 GC \u538b\u529b \/ \u5185\u5b58\u6cc4\u6f0f\uff09<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4e0d\u8981\u7528\u9759\u6001\u96c6\u5408\uff08List\/Dictionary\/HashSet\uff09\u7f13\u5b58\u4e1a\u52a1\u6a21\u578b\uff0c\u5f3a\u6301\u6709\u6c38\u4e45 GC \u4e0d\u6389\uff0c\u5fc5\u987b\u7528 ConditionalWeakTable<\/li>\n\n\n\n<li>\u4e8b\u4ef6\u5f3a\u8ba2\u9605\u4e0d\u52a0\u5f31\u8f6c\u53d1\u5668\uff0cViewModel\/Window \u5173\u95ed\u540e\u65e0\u6cd5 GC\uff0c\u5185\u5b58\u6301\u7eed\u4e0a\u6da8<\/li>\n\n\n\n<li>\u9ad8\u9891\u5faa\u73af\u5185 new class\u3001\u5b57\u7b26\u4e32\u62fc\u63a5\uff0c\u75af\u72c2\u4ea7\u751f 0 \u4ee3\u5783\u573e\uff0c\u9891\u7e41 GC \u5361\u987f<\/li>\n\n\n\n<li>\u5927\u91cf\u5927\u5bf9\u8c61\u9891\u7e41\u521b\u5efa\uff0cLOH \u788e\u7247\u5806\u79ef\uff0c\u89e6\u53d1\u8017\u65f6 Full GC<\/li>\n\n\n\n<li>Finalizer \u5185\u6301\u6709\u6258\u7ba1\u5bf9\u8c61\u5f15\u7528\uff0c\u5bf9\u8c61\u65e0\u6cd5\u56de\u6536\uff0c\u7ec8\u7ed3\u961f\u5217\u5835\u585e<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%e6%8c%89%e4%bc%98%e5%85%88%e7%ba%a7%e6%80%bb%e7%bb%93%e8%90%bd%e5%9c%b0%e9%a1%ba%e5%ba%8f\">\u6309\u4f18\u5148\u7ea7\u603b\u7ed3\u843d\u5730\u987a\u5e8f<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u57fa\u7840\uff1a\u5168\u90e8\u4e8b\u4ef6\u6539\u7528\u81ea\u5236<code>WeakEventManager<\/code>\u5f31\u8ba2\u9605\uff0c\u5207\u65ad\u5f3a\u5f15\u7528\u94fe<\/li>\n\n\n\n<li>\u8ddf\u8e2a\u5bb9\u5668\uff1aHashSet \u2192 ConditionalWeakTable\uff0c\u6d88\u9664\u5bf9\u8c61\u5f3a\u6ede\u7559<\/li>\n\n\n\n<li>\u51cf\u5c11\u5206\u914d\uff1a\u53d8\u66f4\u53c2\u6570 struct\u3001\u9ad8\u9891\u5bf9\u8c61 ObjectPool \u590d\u7528\u3001\u4f18\u5316\u5b57\u7b26\u4e32\u62fc\u63a5<\/li>\n\n\n\n<li>\u8d44\u6e90\u91ca\u653e\uff1aWatcher \u5b9e\u73b0 IDisposable\uff0cDispose \u4e3b\u52a8\u89e3\u7ed1 + SuppressFinalize<\/li>\n\n\n\n<li>GC \u914d\u7f6e\uff1a\u5f00\u542f\u5e76\u53d1\u540e\u53f0 GC\uff0c\u957f\u670d\u52a1\u542f\u7528 LOH \u538b\u7f29<\/li>\n\n\n\n<li>\u5b9e\u65f6\u573a\u666f\uff1a\u9ad8\u9891\u91c7\u96c6\u903b\u8f91\u5957 NoGCRegion \u51cf\u5c11\u505c\u987f<\/li>\n\n\n\n<li>\u76d1\u63a7\uff1a\u63a5\u5165 GC \u5185\u5b58\u6307\u6807\uff0c\u5b9a\u4f4d\u9891\u7e41\u56de\u6536\u3001FullGC \u74f6\u9888<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001\u5f31\u5f15\u7528\u4f53\u7cfb 1. \u57fa\u7840\u5f31\u5f15\u7528 2. CLR \u5185\u7f6e\u5f31\u9644\u52a0\u5bb9\u5668\uff08\u91cd\u70b9\u4f18\u5316\u4f60 Watcher \u7684 HashSet [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-9","post","type-post","status-publish","format-standard","hentry","category-daily"],"_links":{"self":[{"href":"https:\/\/blog.aics.online\/index.php?rest_route=\/wp\/v2\/posts\/9","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.aics.online\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.aics.online\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.aics.online\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.aics.online\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9"}],"version-history":[{"count":2,"href":"https:\/\/blog.aics.online\/index.php?rest_route=\/wp\/v2\/posts\/9\/revisions"}],"predecessor-version":[{"id":11,"href":"https:\/\/blog.aics.online\/index.php?rest_route=\/wp\/v2\/posts\/9\/revisions\/11"}],"wp:attachment":[{"href":"https:\/\/blog.aics.online\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.aics.online\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.aics.online\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}