{"id":2380,"date":"2024-08-27T14:54:46","date_gmt":"2024-08-27T06:54:46","guid":{"rendered":"https:\/\/sanlangcode.com\/?p=2380"},"modified":"2024-08-27T14:54:46","modified_gmt":"2024-08-27T06:54:46","slug":"c-%e7%9a%84%e5%9e%83%e5%9c%be%e5%9b%9e%e6%94%b6%e6%9c%ba%e5%88%b6%ef%bc%88garbage-collection-gc%ef%bc%89","status":"publish","type":"post","link":"https:\/\/sanlangcode.com\/index.php\/2024\/08\/27\/c-%e7%9a%84%e5%9e%83%e5%9c%be%e5%9b%9e%e6%94%b6%e6%9c%ba%e5%88%b6%ef%bc%88garbage-collection-gc%ef%bc%89\/","title":{"rendered":"C# \u7684\u5783\u573e\u56de\u6536\u673a\u5236\uff08Garbage Collection, GC\uff09"},"content":{"rendered":"\n<p>C# \u7684\u5783\u573e\u56de\u6536\u673a\u5236\uff08Garbage Collection, GC\uff09\u662f\u81ea\u52a8\u7ba1\u7406\u5185\u5b58\u7684\u4e00\u4e2a\u91cd\u8981\u529f\u80fd\u3002\u7b80\u5355\u6765\u8bf4\uff0c\u5b83\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u81ea\u52a8\u6e05\u7406\u4e0d\u518d\u4f7f\u7528\u7684\u5bf9\u8c61\uff0c\u91ca\u653e\u5185\u5b58\u7a7a\u95f4\uff0c\u4ece\u800c\u907f\u514d\u5185\u5b58\u6cc4\u6f0f\u7b49\u95ee\u9898\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e3b\u8981\u6982\u5ff5<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>\u5806\uff08Heap\uff09\u548c\u6808\uff08Stack\uff09<\/strong>\uff1a\u5728 C# \u4e2d\uff0c\u5185\u5b58\u5206\u4e3a\u6808\u5185\u5b58\u548c\u5806\u5185\u5b58\u3002\u6808\u5185\u5b58\u7528\u4e8e\u5b58\u50a8\u503c\u7c7b\u578b\u7684\u6570\u636e\uff0c\u6bd4\u5982\u6574\u6570\u3001\u6d6e\u70b9\u6570\u7b49\u3002\u5806\u5185\u5b58\u7528\u4e8e\u5b58\u50a8\u5f15\u7528\u7c7b\u578b\u7684\u6570\u636e\uff0c\u6bd4\u5982\u5bf9\u8c61\u548c\u6570\u7ec4\u3002<\/li><li><strong>\u4ee3\uff08Generations\uff09<\/strong>\uff1aC# \u7684\u5783\u573e\u56de\u6536\u673a\u5236\u5c06\u5806\u5185\u5b58\u5206\u4e3a\u4e09\u4e2a\u4ee3\uff0c\u5206\u522b\u662f\u7b2c 0 \u4ee3\u3001\u7b2c 1 \u4ee3\u548c\u7b2c 2 \u4ee3\u3002\u5bf9\u8c61\u4f1a\u6839\u636e\u5176\u751f\u547d\u5468\u671f\u5206\u914d\u5230\u4e0d\u540c\u7684\u4ee3\uff1a<ul><li><strong>\u7b2c 0 \u4ee3<\/strong>\uff1a\u521a\u521b\u5efa\u7684\u65b0\u5bf9\u8c61\u3002<\/li><li><strong>\u7b2c 1 \u4ee3<\/strong>\uff1a\u5b58\u6d3b\u65f6\u95f4\u7a0d\u957f\u7684\u5bf9\u8c61\u3002<\/li><li><strong>\u7b2c 2 \u4ee3<\/strong>\uff1a\u957f\u65f6\u95f4\u5b58\u6d3b\u7684\u5bf9\u8c61\u3002<\/li><\/ul><\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u5783\u573e\u56de\u6536\u7684\u5de5\u4f5c\u539f\u7406<\/h3>\n\n\n\n<ol class=\"wp-block-list\"><li><strong>\u5bf9\u8c61\u521b\u5efa<\/strong>\uff1a\u5f53\u4f60\u5728\u7a0b\u5e8f\u4e2d\u521b\u5efa\u4e00\u4e2a\u5bf9\u8c61\u65f6\uff0c\u5b83\u4f1a\u88ab\u5206\u914d\u5230\u5806\u5185\u5b58\u4e2d\u3002\u5982\u679c\u5806\u5185\u5b58\u7a7a\u95f4\u4e0d\u8db3\uff0cGC \u5c31\u4f1a\u5f00\u59cb\u5de5\u4f5c\u3002<\/li><li><strong>\u6807\u8bb0\uff08Marking\uff09<\/strong>\uff1aGC \u4f1a\u9996\u5148\u6807\u8bb0\u51fa\u54ea\u4e9b\u5bf9\u8c61\u4ecd\u7136\u5728\u4f7f\u7528\uff08\u88ab\u5176\u4ed6\u5bf9\u8c61\u5f15\u7528\uff09\u3002<\/li><li><strong>\u6e05\u9664\uff08Sweeping\uff09<\/strong>\uff1a\u7136\u540e\uff0cGC \u4f1a\u6e05\u9664\u90a3\u4e9b\u6ca1\u6709\u88ab\u6807\u8bb0\u7684\u3001\u4e0d\u518d\u4f7f\u7528\u7684\u5bf9\u8c61\uff0c\u4ece\u800c\u91ca\u653e\u5185\u5b58\u3002<\/li><li><strong>\u538b\u7f29\uff08Compacting\uff09<\/strong>\uff1a\u5728\u6e05\u9664\u5bf9\u8c61\u540e\uff0cGC \u4f1a\u628a\u5b58\u6d3b\u7684\u5bf9\u8c61\u79fb\u52a8\u5230\u5806\u5185\u5b58\u7684\u4e00\u7aef\uff0c\u4ee5\u51cf\u5c11\u5185\u5b58\u788e\u7247\uff0c\u4f7f\u540e\u7eed\u7684\u5185\u5b58\u5206\u914d\u66f4\u9ad8\u6548\u3002<\/li><\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u81ea\u52a8\u5316\u4e0e\u4ee3\u6570<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>\u7b2c 0 \u4ee3<\/strong> \u56de\u6536\u6700\u9891\u7e41\uff0c\u56e0\u4e3a\u5927\u591a\u6570\u5bf9\u8c61\u7684\u751f\u547d\u5468\u671f\u90fd\u5f88\u77ed\u3002\u8fd9\u79cd\u56de\u6536\u4ee3\u4ef7\u8f83\u4f4e\u3002<\/li><li><strong>\u7b2c 1 \u4ee3<\/strong> \u548c <strong>\u7b2c 2 \u4ee3<\/strong> \u7684\u56de\u6536\u9891\u7387\u76f8\u5bf9\u8f83\u4f4e\uff0c\u4e3b\u8981\u7528\u4e8e\u90a3\u4e9b\u751f\u547d\u5468\u671f\u8f83\u957f\u7684\u5bf9\u8c61\u3002<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f18\u52bf<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>\u81ea\u52a8\u5316<\/strong>\uff1a\u5f00\u53d1\u8005\u4e0d\u9700\u8981\u624b\u52a8\u7ba1\u7406\u5185\u5b58\u5206\u914d\u548c\u91ca\u653e\uff0c\u964d\u4f4e\u4e86\u7f16\u7a0b\u590d\u6742\u5ea6\u3002<\/li><li><strong>\u9ad8\u6548<\/strong>\uff1aGC \u4f18\u5316\u4e86\u5185\u5b58\u4f7f\u7528\uff0c\u901a\u8fc7\u4ee3\u6570\u7ba1\u7406\u51cf\u5c11\u4e86\u56de\u6536\u9891\u7387\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86\u6027\u80fd\u3002<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u6ce8\u610f\u4e8b\u9879<\/h3>\n\n\n\n<p>\u867d\u7136 GC \u6781\u5927\u5730\u7b80\u5316\u4e86\u5185\u5b58\u7ba1\u7406\uff0c\u4f46\u4ecd\u9700\u6ce8\u610f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>\u53ca\u65f6\u91ca\u653e\u8d44\u6e90<\/strong>\uff1a\u5bf9\u4e8e\u4f7f\u7528\u5927\u91cf\u5185\u5b58\u6216\u975e\u6258\u7ba1\u8d44\u6e90\u7684\u5bf9\u8c61\uff08\u5982\u6587\u4ef6\u53e5\u67c4\u3001\u6570\u636e\u5e93\u8fde\u63a5\uff09\uff0c\u5e94\u901a\u8fc7 <code>Dispose<\/code> \u65b9\u6cd5\u6216 <code>using<\/code> \u8bed\u53e5\u624b\u52a8\u91ca\u653e\u8d44\u6e90\u3002<\/li><li><strong>\u907f\u514d\u5185\u5b58\u6cc4\u6f0f<\/strong>\uff1a\u867d\u7136 GC \u53ef\u4ee5\u56de\u6536\u5185\u5b58\uff0c\u4f46\u5982\u679c\u5bf9\u8c61\u4e4b\u95f4\u5b58\u5728\u5faa\u73af\u5f15\u7528\uff0c\u4e14\u8fd9\u4e9b\u5bf9\u8c61\u4e0d\u518d\u88ab\u4f7f\u7528\uff0c\u4ecd\u53ef\u80fd\u5bfc\u81f4\u5185\u5b58\u6cc4\u6f0f\u3002<\/li><\/ul>\n\n\n\n<p>\u603b\u4e4b\uff0cC# \u7684\u5783\u573e\u56de\u6536\u673a\u5236\u8ba9\u5185\u5b58\u7ba1\u7406\u53d8\u5f97\u66f4\u52a0\u7b80\u5355\u548c\u9ad8\u6548\uff0c\u4f46\u5408\u7406\u4f7f\u7528\u548c\u7406\u89e3\u5176\u5de5\u4f5c\u539f\u7406\u5bf9\u4e8e\u7f16\u5199\u9ad8\u6548\u7684\u7a0b\u5e8f\u4ecd\u7136\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n\n\n\n<p>\u5728 C# \u4ee3\u7801\u4e2d\uff0c\u5783\u573e\u56de\u6536\u673a\u5236\uff08GC\uff09\u901a\u5e38\u662f\u81ea\u52a8\u5904\u7406\u7684\uff0c\u5f00\u53d1\u8005\u4e0d\u9700\u8981\u624b\u52a8\u8c03\u7528\u5783\u573e\u56de\u6536\u5668\u3002\u4e0d\u8fc7\uff0c\u5728\u67d0\u4e9b\u7279\u6b8a\u60c5\u51b5\u4e0b\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u4ee3\u7801\u76f4\u63a5\u4e0e\u5783\u573e\u56de\u6536\u5668\u8fdb\u884c\u4ea4\u4e92\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5e38\u7528\u7684\u5783\u573e\u56de\u6536\u65b9\u6cd5<\/h3>\n\n\n\n<ol class=\"wp-block-list\"><li><strong><code>GC.Collect()<\/code><\/strong>\uff1a<ul><li>\u8fd9\u4e2a\u65b9\u6cd5\u4f1a\u5f3a\u5236\u542f\u52a8\u5783\u573e\u56de\u6536\u3002\u901a\u5e38\u4e0d\u5efa\u8bae\u5728\u4ee3\u7801\u4e2d\u9891\u7e41\u4f7f\u7528\u5b83\uff0c\u56e0\u4e3a\u5783\u573e\u56de\u6536\u662f\u4e00\u4e2a\u6602\u8d35\u7684\u64cd\u4f5c\uff0c\u5f3a\u5236\u542f\u52a8\u53ef\u80fd\u4f1a\u5f71\u54cd\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u3002<\/li><li>\u4f7f\u7528\u793a\u4f8b\uff1a\/\/ \u5f3a\u5236\u8fdb\u884c\u5783\u573e\u56de\u6536<br>GC.Collect();<\/li><\/ul><\/li><li><strong><code>GC.WaitForPendingFinalizers()<\/code><\/strong>\uff1a<ul><li>\u8fd9\u4e2a\u65b9\u6cd5\u4f1a\u6682\u505c\u5f53\u524d\u7ebf\u7a0b\uff0c\u76f4\u5230\u6240\u6709\u7684\u7ec8\u7ed3\u5668\uff08finalizers\uff09\u5b8c\u6210\u6267\u884c\u3002\u901a\u5e38\u548c <code>GC.Collect()<\/code> \u4e00\u8d77\u4f7f\u7528\uff0c\u786e\u4fdd\u5728\u56de\u6536\u524d\u7ec8\u7ed3\u5668\u8fd0\u884c\u5b8c\u6bd5\u3002<\/li><li>\u4f7f\u7528\u793a\u4f8b\uff1a\/\/ \u5f3a\u5236\u8fdb\u884c\u5783\u573e\u56de\u6536\uff0c\u5e76\u7b49\u5f85\u6240\u6709\u7ec8\u7ed3\u5668\u5b8c\u6210<br>GC.Collect();<br>GC.WaitForPendingFinalizers();<\/li><\/ul><\/li><li><strong><code>GC.SuppressFinalize(object obj)<\/code><\/strong>\uff1a<ul><li>\u5982\u679c\u4f60\u4e0d\u5e0c\u671b\u5783\u573e\u56de\u6536\u5668\u8c03\u7528\u67d0\u4e2a\u5bf9\u8c61\u7684\u7ec8\u7ed3\u5668\uff0c\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e2a\u65b9\u6cd5\u3002\u8fd9\u5728\u5b9e\u73b0 <code>IDisposable<\/code> \u63a5\u53e3\u65f6\u5f88\u6709\u7528\uff0c\u5f53\u8d44\u6e90\u5df2\u7ecf\u88ab\u624b\u52a8\u91ca\u653e\u65f6\uff0c\u4e0d\u518d\u9700\u8981\u5783\u573e\u56de\u6536\u5668\u8c03\u7528\u7ec8\u7ed3\u5668\u3002<\/li><li>\u4f7f\u7528\u793a\u4f8b\uff1a<\/li><\/ul><\/li><\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>public class MyClass : IDisposable\n{\n  private bool _disposed = false;\n\u200b\n  public void Dispose()\n  {\n      if (!_disposed)\n      {\n          \/\/ \u91ca\u653e\u6258\u7ba1\u8d44\u6e90\n          \/\/ \u91ca\u653e\u975e\u6258\u7ba1\u8d44\u6e90\n\u200b\n          \/\/ \u544a\u8bc9\u5783\u573e\u56de\u6536\u5668\u4e0d\u518d\u8c03\u7528\u7ec8\u7ed3\u5668\n          GC.SuppressFinalize(this);\n          _disposed = true;\n      }\n  }\n\u200b\n  ~MyClass()\n  {\n      \/\/ \u5728\u7ec8\u7ed3\u5668\u4e2d\u91ca\u653e\u8d44\u6e90\n      Dispose();\n  }\n}<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\"><li><strong><code>GC.GetTotalMemory(bool forceFullCollection)<\/code><\/strong>\uff1a<ul><li>\u83b7\u53d6\u5f53\u524d\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u7684\u5185\u5b58\u5927\u5c0f\u3002\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e <code>forceFullCollection<\/code> \u53c2\u6570\u4e3a <code>true<\/code>\uff0c\u5f3a\u5236\u5783\u573e\u56de\u6536\u5668\u5148\u8fd0\u884c\u4e00\u6b21\u518d\u83b7\u53d6\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\u3002<\/li><li>\u4f7f\u7528\u793a\u4f8b\uff1along memoryBefore = GC.GetTotalMemory(false);<br>\u200b<br>\/\/ \u6267\u884c\u4e00\u4e9b\u64cd\u4f5c<\/li><\/ul><\/li><\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>long memoryAfter = GC.GetTotalMemory(true);\nConsole.WriteLine($\"Memory used: {memoryAfter - memoryBefore} bytes\");<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u5178\u578b\u4f7f\u7528\u573a\u666f<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>\u4f18\u5316\u6027\u80fd<\/strong>\uff1a\u5728\u9700\u8981\u53ca\u65f6\u91ca\u653e\u5927\u91cf\u5185\u5b58\u7684\u573a\u666f\uff0c\u5982\u5927\u578b\u6570\u636e\u5904\u7406\u3001\u56fe\u50cf\u5904\u7406\u7b49\uff0c\u53ef\u80fd\u4f1a\u624b\u52a8\u8c03\u7528 <code>GC.Collect()<\/code>\uff0c\u786e\u4fdd\u5185\u5b58\u5feb\u901f\u91ca\u653e\u3002<\/li><li><strong>\u8d44\u6e90\u7ba1\u7406<\/strong>\uff1a\u5728\u4f7f\u7528\u975e\u6258\u7ba1\u8d44\u6e90\u65f6\uff0c\u5982\u6587\u4ef6\u3001\u6570\u636e\u5e93\u8fde\u63a5\u7b49\uff0c\u624b\u52a8\u8c03\u7528 <code>Dispose()<\/code> \u5e76\u4f7f\u7528 <code>GC.SuppressFinalize()<\/code>\uff0c\u786e\u4fdd\u8d44\u6e90\u6b63\u786e\u91ca\u653e\u4e14\u7ec8\u7ed3\u5668\u4e0d\u88ab\u8c03\u7528\u3002<\/li><\/ul>\n\n\n\n<p>\u5982\u679c\u4f60\u4e0d\u5e0c\u671b\u4e00\u5f20\u5927\u7167\u7247\u88ab\u5783\u573e\u56de\u6536\u5668\u56de\u6536\u548c\u91ca\u653e\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u51e0\u79cd\u65b9\u5f0f\u6765\u5b9e\u73b0\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. <strong>\u589e\u52a0\u5f15\u7528\u8ba1\u6570<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u786e\u4fdd\u7167\u7247\u5bf9\u8c61\u5728\u7a0b\u5e8f\u4e2d\u6709\u8db3\u591f\u7684\u5f15\u7528\uff0c\u8fd9\u6837\u5783\u573e\u56de\u6536\u5668\u5c31\u4e0d\u4f1a\u8ba4\u4e3a\u5b83\u662f\u65e0\u7528\u7684\uff0c\u4ece\u800c\u4e0d\u4f1a\u56de\u6536\u5b83\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>public class PhotoManager\n{\n    private Image _photo;\n\u200b\n    public void LoadPhoto(string path)\n    {\n        _photo = Image.FromFile(path);\n    }\n\u200b\n    public Image GetPhoto()\n    {\n        return _photo;\n    }\n}\n\u200b\n\/\/ \u5728\u4f7f\u7528\u65f6\u4fdd\u6301\u5bf9\u7167\u7247\u5bf9\u8c61\u7684\u5f15\u7528\nvar manager = new PhotoManager();\nmanager.LoadPhoto(\"path\/to\/large\/photo.jpg\");\nImage photo = manager.GetPhoto(); \/\/ \u6301\u6709\u5bf9 _photo \u7684\u5f15\u7528<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">2. <strong>\u9759\u6001\u5b57\u6bb5\uff08Static Field\uff09<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u5c06\u7167\u7247\u5b58\u50a8\u5728\u9759\u6001\u5b57\u6bb5\u4e2d\uff0c\u56e0\u4e3a\u9759\u6001\u5b57\u6bb5\u5728\u6574\u4e2a\u5e94\u7528\u7a0b\u5e8f\u751f\u547d\u5468\u671f\u5185\u90fd\u5b58\u5728\uff0c\u4e0d\u4f1a\u88ab\u5783\u573e\u56de\u6536\u5668\u56de\u6536\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">public static class PhotoCache<br>{<br> &nbsp;  public static Image LargePhoto { get; set; }<br>}<br>\u200b<br>\/\/ \u5728\u5e94\u7528\u7a0b\u5e8f\u542f\u52a8\u65f6\u52a0\u8f7d\u7167\u7247<br>PhotoCache.LargePhoto = Image.FromFile(\"path\/to\/large\/photo.jpg\");<br>\u200b<br>\/\/ \u5728\u4efb\u4f55\u5730\u65b9\u90fd\u53ef\u4ee5\u8bbf\u95ee\u8fd9\u5f20\u7167\u7247<br>Image photo = PhotoCache.LargePhoto;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">3. <strong>\u4f7f\u7528 <code>GC.KeepAlive<\/code> \u65b9\u6cd5<\/strong>\uff1a<\/h3>\n\n\n\n<p><code>GC.KeepAlive<\/code> \u65b9\u6cd5\u786e\u4fdd\u5728\u65b9\u6cd5\u7ed3\u675f\u524d\uff0c\u5bf9\u8c61\u4e0d\u4f1a\u88ab\u5783\u573e\u56de\u6536\u3002\u53ef\u4ee5\u5728\u4ee3\u7801\u7684\u6700\u540e\u4f7f\u7528 <code>GC.KeepAlive(photo)<\/code>\uff0c\u6765\u9632\u6b62\u7167\u7247\u5bf9\u8c61\u5728\u65b9\u6cd5\u6267\u884c\u8fc7\u7a0b\u4e2d\u88ab\u56de\u6536\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">public void ProcessPhoto()<br>{<br> &nbsp;  Image photo = Image.FromFile(\"path\/to\/large\/photo.jpg\");<br>\u200b<br> &nbsp;  \/\/ \u6267\u884c\u4e00\u4e9b\u64cd\u4f5c<br> &nbsp;  \/\/ ...<br>\u200b<br> &nbsp;  \/\/ \u786e\u4fdd photo \u5728\u6b64\u65b9\u6cd5\u7ed3\u675f\u524d\u4e0d\u4f1a\u88ab\u56de\u6536<br> &nbsp;  GC.KeepAlive(photo);<br>}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">4. <strong>\u4f7f\u7528 <code>Pinned<\/code> \u5185\u5b58<\/strong>\uff08\u9ad8\u7ea7\u65b9\u6cd5\uff09\uff1a<\/h3>\n\n\n\n<p>\u53ef\u4ee5\u5c06\u7167\u7247\u5bf9\u8c61\u56fa\u5b9a\u5728\u5185\u5b58\u4e2d\uff0c\u9632\u6b62\u5b83\u88ab\u79fb\u52a8\u6216\u56de\u6536\u3002\u8fd9\u79cd\u65b9\u6cd5\u901a\u5e38\u9002\u7528\u4e8e\u975e\u6258\u7ba1\u8d44\u6e90\uff0c\u4f46\u5728\u5904\u7406\u5927\u578b\u5bf9\u8c61\u65f6\u4e5f\u53ef\u4ee5\u8003\u8651\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">public void PinPhotoInMemory()<br>{<br> &nbsp;  Image photo = Image.FromFile(\"path\/to\/large\/photo.jpg\");<br>\u200b<br> &nbsp;  \/\/ \u56fa\u5b9a\u5185\u5b58\u7684\u64cd\u4f5c\uff08\u4ec5\u793a\u4f8b\uff0c\u5b9e\u9645\u4ee3\u7801\u53ef\u80fd\u590d\u6742\u5f97\u591a\uff09<br> &nbsp;  var handle = GCHandle.Alloc(photo, GCHandleType.Pinned);<br>\u200b<br> &nbsp;  \/\/ \u5728\u9700\u8981\u7684\u5730\u65b9\u4fdd\u6301\u56fa\u5b9a<br> &nbsp;  \/\/ ...<br>\u200b<br> &nbsp;  \/\/ \u91ca\u653e\u56fa\u5b9a<br> &nbsp;  handle.Free();<br>}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u6ce8\u610f\u4e8b\u9879\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>\u5185\u5b58\u7ba1\u7406<\/strong>\uff1a\u867d\u7136\u8fd9\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u9632\u6b62\u5bf9\u8c61\u88ab\u56de\u6536\uff0c\u4f46\u53ef\u80fd\u4f1a\u589e\u52a0\u5185\u5b58\u4f7f\u7528\u3002\u5982\u679c\u957f\u671f\u6301\u6709\u5927\u5bf9\u8c61\u7684\u5f15\u7528\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5185\u5b58\u6cc4\u6f0f\u6216\u7a0b\u5e8f\u5185\u5b58\u5360\u7528\u8fc7\u9ad8\u3002<\/li><li><strong>\u5408\u9002\u573a\u666f<\/strong>\uff1a\u53ea\u5728\u786e\u5b9e\u9700\u8981\u7684\u573a\u666f\u4e2d\u4f7f\u7528\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u907f\u514d\u8fc7\u5ea6\u4f7f\u7528\u9759\u6001\u5b57\u6bb5\u6216\u5f3a\u5f15\u7528\uff0c\u5f71\u54cd\u5e94\u7528\u7a0b\u5e8f\u7684\u5185\u5b58\u8868\u73b0\u3002<\/li><\/ul>\n\n\n\n<p>\u901a\u8fc7\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u4f60\u53ef\u4ee5\u6709\u6548\u5730\u9632\u6b62\u4e00\u5f20\u5927\u7167\u7247\u5728\u9700\u8981\u65f6\u88ab\u5783\u573e\u56de\u6536\u5668\u56de\u6536\uff0c\u786e\u4fdd\u5b83\u5728\u7a0b\u5e8f\u751f\u547d\u5468\u671f\u4e2d\u4fdd\u6301\u6709\u6548\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C# \u7684\u5783\u573e\u56de\u6536\u673a\u5236\uff08Garba&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-2380","post","type-post","status-publish","format-standard","hentry","category-4"],"_links":{"self":[{"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/posts\/2380","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/comments?post=2380"}],"version-history":[{"count":0,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/posts\/2380\/revisions"}],"wp:attachment":[{"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/media?parent=2380"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/categories?post=2380"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/tags?post=2380"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}