{"id":1361,"date":"2016-03-03T11:56:53","date_gmt":"2016-03-03T03:56:53","guid":{"rendered":"https:\/\/ai.zhousir.top\/?p=1361"},"modified":"2026-08-18T12:58:49","modified_gmt":"2026-08-18T04:58:49","slug":"android%e5%86%85%e5%ad%98%e6%b3%84%e6%bc%8f%e6%9f%a5%e6%89%be%e5%8f%8a%e8%a7%a3%e5%86%b3%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=1361","title":{"rendered":"\u5185\u5b58\u6cc4\u6f0f\u63a2\u8ba8\u4e0b(\u89e3\u51b3\u65b9\u6cd5)"},"content":{"rendered":"
\n
\n

\u53d1\u751f\u5185\u5b58\u6cc4\u6f0f\uff0c\u5148\u67e5\u518d\u89e3\u3002\u68c0\u67e5\u7528 DDMS \u91cc\u7684 Heap<\/strong>\uff0c\u5206\u6790\u7528 MAT<\/strong>\uff1b\u65e5\u5e38\u5f00\u53d1\u8fd8\u53ef\u4ee5\u63a5 LeakCanary<\/strong>\uff0c\u5728 debug \u5305\u91cc\u628a dump \u548c\u8def\u5f84\u7b97\u597d\u3002<\/p>\n<\/blockquote>\n

<\/p>\n

\n

\u4e00\u3001\u5185\u5b58\u6cc4\u6f0f\u7684\u68c0\u67e5\u5de5\u5177 Heap<\/span><\/h2>\n

\u5de5\u6b32\u5584\u5176\u4e8b\u5fc5\u5148\u5229\u5176\u5668\u3002Heap \u7528\u6765\u5927\u81f4\u5224\u65ad\u6709\u6ca1\u6709\u6cc4\u6f0f\uff0cMAT \u7528\u6765\u5206\u6790\u6cc4\u6f0f\u53d1\u751f\u5728\u54ea\u91cc\u3002\u5f00\u53d1\u73af\u5883 DDMS \u80fd\u627e\u5230\u8fd9\u4e24\u4e2a\u3002<\/p>\n

\"201601120923191\"<\/a><\/p>\n

\u5177\u4f53\u64cd\u4f5c\uff1a<\/p>\n

    \n
  1. \n
    \u5728 Devices \u8bbe\u5907\u5217\u8868\u91cc\u627e\u5230\u8bbe\u5907\uff0c\u70b9\u8981\u76d1\u63a7\u7684\u8fdb\u7a0b\u3002<\/section>\n<\/li>\n
  2. \n
    \u70b9 \u201cUpdate Heap\u201d \u66f4\u65b0\u5806\u5185\u5b58\u3002<\/section>\n<\/li>\n
  3. \n
    \u70b9 \u201cHeap\u201d \u89c6\u56fe\u770b\u5185\u5b58\u3002<\/section>\n<\/li>\n
  4. \n
    \u6bcf\u6b21 Activity \u9000\u51fa\u548c\u8fdb\u5165\u65f6\u70b9 \u201cCause GC\u201d\uff0c\u624b\u52a8\u8c03\u7528 GC\u3002<\/section>\n<\/li>\n
  5. \n
    \u89c2\u5bdf data object \u90a3\u4e00\u884c\u3002\u6bcf\u6b21\u70b9 Cause GC \u770b Total Size\uff0c\u5982\u679c\u4e0d\u65ad\u589e\u5927\uff0c\u8bf4\u660e\u5b58\u5728\u6cc4\u6f0f\u3002<\/section>\n<\/li>\n<\/ol>\n

    \u5148\u6a21\u62df\u6cc4\u6f0f\uff0c\u518d\u7528 Heap \u5224\u65ad\u3002\u6cc4\u6f0f\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n

    public class LeakAty extends Activity {\n\n    @Override\n    protected void onCreate(Bundle savedInstanceState) {\n        super.onCreate(savedInstanceState);\n        setContentView(R.layout.aty_leak);\n        testLeak();\n    }\n\n    \/**\n     * \u6d4b\u8bd5\u5185\u5b58\u6cc4\u6f0f\u7684\u4ee3\u7801\n     *\/\n    private void testLeak() {\n        new Thread(new Runnable() {\n            @Override\n            public void run() {\n                while (true) {\n                    try {\n                        Thread.sleep(1000);\n                    } catch (InterruptedException e) {\n                        e.printStackTrace();\n                    }\n                }\n            }\n        }).start();\n    }\n}<\/code><\/pre>\n
    new Runnable(){}<\/code> \u662f\u975e\u9759\u6001\u533f\u540d\u5185\u90e8\u7c7b\uff0c\u4f1a\u5f3a\u5f15\u7528\u5916\u56f4\u5bf9\u8c61 LeakAty\u3002\u6253\u5f00\u65b9\u5411\u65cb\u8f6c\uff0c\u4e0d\u65ad\u8f6c\u5c4f\u8ba9 LeakAty \u53cd\u590d\u521b\u5efa\u3002\u6ca1\u6709\u8fd9\u6bb5\u4ee3\u7801\u65f6\uff0c\u65e7 Activity \u4f1a\u5728 onDestroy \u4e4b\u540e\u88ab\u56de\u6536\uff1b\u6709\u4e86\u5b83\uff0cRunnable \u4e00\u76f4\u8dd1\u3001\u4e0d\u4f1a\u88ab\u56de\u6536\uff0c\u5b83\u5f3a\u5f15\u7528\u7684 LeakAty \u4e5f\u4e0d\u4f1a\u88ab\u56de\u6536\u3002\u8f6c n \u6b21\uff0c\u5185\u5b58\u91cc\u5c31\u6709 n+1 \u4e2a LeakAty\u3002<\/p>\n
    Heap \u7b2c\u4e00\u6b21\u6309 Cause GC\uff1a<\/p>\n
    \"201601120923202\"<\/a><\/p>\n
    \u4e0a\u56fe data object \u7684 Total Size \u4e3a 1.031M\u3002\u591a\u6b21\u65cb\u8f6c\u540e\u518d\u770b\uff1a<\/p>\n
    \"201601120923203\"<\/a><\/p>\n
    Total Size \u53d8\u6210 2.059M\u3002\u6bcf\u6b21 GC \u540e data object \u603b\u5927\u5c0f\u6ca1\u6709\u56de\u843d\uff0c\u53ef\u4ee5\u8bc1\u5b9e\u5b58\u5728\u6cc4\u6f0f\u3002\u6cc4\u6f0f\u53d1\u751f\u5728\u54ea\uff0c\u4ea4\u7ed9 MAT\u3002<\/p>\n
    \n
    \u4e8c\u3001\u5185\u5b58\u6cc4\u6f0f\u7684\u5206\u6790\u5de5\u5177 MAT<\/span><\/h2>\n
    MAT \u9700\u8981 .hprof\u3002\u901a\u8fc7 \u201cDump HPROF file\u201d \u8f6c\u5b58\u5f53\u524d\u5806\uff0c\u4fdd\u5b58\u4e3a 1.hprof\u3002<\/p>\n
    \"201601120923204\"<\/a><\/p>\n
    \u5bfc\u51fa\u7684 1.hprof \u8981\u7528 ..\\sdk\\tools\\<\/code> \u4e0b\u7684 hprof-conv.exe \u8f6c\u6362\uff0c\u624d\u80fd\u88ab MAT \u5bfc\u5165\uff0c\u8f6c\u6210 out1.hprof\u3002<\/p>\n
    \"201601120923205\"<\/a><\/p>\n
    File \u2192 Open Heap Dump\u2026 \u5bfc\u5165 out1.hprof\u3002<\/p>\n
    \"201601120923206\"<\/a><\/p>\n
    \u70b9\u5de6\u8fb9 Overview\uff0cActions \u2192 Histogram\u3002<\/p>\n
    \"201601120923207\"<\/a><\/p>\n
    \u60f3\u77e5\u9053 Activity \u6709\u6ca1\u6709\u6cc4\u6f0f\uff0c\u8f93\u5165\u5173\u952e\u8bcd Activity\uff0c\u56de\u8f66\u3002<\/p>\n
    \"201601120923208\"<\/a><\/p>\n
    \u4e0b\u56fe\u641c\u7d22\u7ed3\u679c\u91cc Activity \u5b9e\u4f8b\u6709 7 \u4e2a\u3002\u70b9\u9009\u4e2d\u7ea2\u8272\u6846\uff0c\u53f3\u952e \u2192 Merge Shortest Paths to GC Roots \u2192 exclude all phantom\/weak\/soft etc. references\u3002\u6392\u9664\u865a\u5f15\u7528\u3001\u5f31\u5f15\u7528\u3001\u8f6f\u5f15\u7528\uff0c\u5269\u4e0b\u90fd\u662f\u5f3a\u5f15\u7528\u3002<\/p>\n
    \"201601120923209\"<\/a><\/p>\n
    \u8fc7\u6ee4\u51fa\u6765\u7684\u5f3a\u5f15\u7528\u5217\u8868\u91cc\uff0c\u8fd9\u4e03\u4e2a\u5b9e\u4f8b\u90fd\u88ab Thread \u5f15\u7528\uff0c\u8bc1\u5b9e\u4e0a\u9762\u7684\u4ee3\u7801\u786e\u5b9e\u6cc4\u6f0f\u3002<\/p>\n
    \"2016011209232010\"<\/a><\/p>\n
    \n
    \u4e09\u3001\u4f7f\u7528 LeakCanary \u68c0\u6d4b Android \u7684\u5185\u5b58\u6cc4\u6f0f<\/span><\/h2>\n
    \u4ec0\u4e48\u662f LeakCanary<\/a>\uff1f\u4e3a\u4ec0\u4e48\u9009\u5b83\uff1f<\/p>\n
    LeakCanary \u662f Pierre-Yves Ricau \u5f00\u53d1\u7684\u5f00\u6e90\u5e93\uff0c\u7528\u6765\u68c0\u6d4b\u5185\u5b58\u6cc4\u9732\u3002\u5bf9\u6218\u6cc4\u6f0f\u901a\u5e38\u8981\u7ecf\u8fc7\uff1a<\/p>\n
      \n
    1. \n
      \u4e86\u89e3 OutOfMemoryError \u60c5\u51b5\u3002<\/section>\n<\/li>\n
    2. \n
      \u91cd\u73b0\u95ee\u9898\u3002<\/section>\n<\/li>\n
    3. \n
      \u53d1\u751f\u6cc4\u9732\u65f6\u628a\u5185\u5b58 Dump \u51fa\u6765\u3002<\/section>\n<\/li>\n
    4. \n
      \u5206\u6790 dump\uff0c\u5b9a\u4f4d\u53ef\u7591\u5bf9\u8c61\u3002<\/section>\n<\/li>\n
    5. \n
      \u8ba1\u7b97\u8fd9\u4e2a\u5bf9\u8c61\u5230 GC roots \u7684\u6700\u77ed\u5f3a\u5f15\u7528\u8def\u5f84\u3002<\/section>\n<\/li>\n
    6. \n
      \u786e\u5b9a\u8def\u5f84\u91cc\u54ea\u4e2a\u5f15\u7528\u4e0d\u8be5\u6709\uff0c\u7136\u540e\u4fee\u590d\u3002<\/section>\n<\/li>\n<\/ol>\n
      \u5f88\u590d\u6742\u3002\u5982\u679c\u6709\u4e00\u4e2a\u5e93\u80fd\u5728 OOM \u4e4b\u524d\u628a\u8fd9\u4e9b\u4e8b\u60c5\u505a\u5b8c\uff0c\u4f60\u53ea\u8981\u4fee\u95ee\u9898\u5c31\u597d\u2014\u2014LeakCanary \u505a\u7684\u5c31\u662f\u8fd9\u4ef6\u4e8b\u3002\u53ef\u4ee5\u5728 debug \u5305\u91cc\u8f7b\u677e\u68c0\u6d4b\u5185\u5b58\u6cc4\u9732\u3002<\/p>\n\n\n\n\n\n\n\n
      \u5de5\u5177<\/th>\n\u5e72\u4ec0\u4e48<\/th>\n\u5173\u952e\u52a8\u4f5c<\/th>\n<\/tr>\n<\/thead>\n
      Heap<\/td>\n\u5224\u65ad\u6709\u6ca1\u6709\u6cc4\u6f0f<\/td>\nCause GC \u540e\u770b data object Total Size \u662f\u5426\u53ea\u589e\u4e0d\u51cf<\/td>\n<\/tr>\n
      hprof-conv + MAT<\/td>\n\u5b9a\u4f4d\u8c01\u63e1\u7740\u5bf9\u8c61<\/td>\nHistogram \u2192 Merge Shortest Paths to GC Roots\uff08\u6392\u9664\u5f31\/\u8f6f\/\u865a\u5f15\u7528\uff09<\/td>\n<\/tr>\n
      LeakCanary<\/td>\ndebug \u5305\u81ea\u52a8\u8d70\u5b8c\u4e0a\u8ff0\u6b65\u9aa4<\/td>\n\u4f60\u8d1f\u8d23\u4fee\u90a3\u6761\u4e0d\u8be5\u5b58\u5728\u7684\u5f3a\u5f15\u7528<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
      \n
      \u4e00\u53e5\u8bdd\u603b\u7ed3\uff1aHeap \u770b Total Size \u53ea\u589e\u4e0d\u51cf\uff0cMAT \u6cbf\u5f3a\u5f15\u7528\u627e\u5230 GC Root\uff0cLeakCanary \u5219\u628a dump \u548c\u8def\u5f84\u8ba1\u7b97\u63d0\u524d\u505a\u5b8c\uff0c\u4f60\u53ea\u8d1f\u8d23\u526a\u65ad\u90a3\u6761\u4e0d\u8be5\u6709\u7684\u8fb9\u3002<\/strong><\/p>\n<\/blockquote>\n<\/section>\n","protected":false},"excerpt":{"rendered":"
      \u53d1\u751f\u5185\u5b58\u6cc4\u6f0f\uff0c\u5148\u67e5\u518d\u89e3\u3002\u68c0\u67e5\u7528 DDMS \u91cc\u7684 Heap\uff0c\u5206\u6790\u7528 MAT\uff1b\u65e5\u5e38\u5f00\u53d1\u8fd8\u53ef\u4ee5\u63a5 LeakCanar […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[45],"tags":[77],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/1361"}],"collection":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1361"}],"version-history":[{"count":3,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/1361\/revisions"}],"predecessor-version":[{"id":1434,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/1361\/revisions\/1434"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1361"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1361"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1361"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}