\u5de5\u6b32\u5584\u5176\u4e8b\u5fc5\u5148\u5229\u5176\u5668\uff0c\u8981\u68c0\u6d4b\u201c\u5185\u5b58\u6cc4\u6f0f\u201d\u7684\u53d1\u751f\uff0c\u9700\u8981\u501f\u52a9DDMS\u4e2d\u7684Heap\u5de5\u5177\u53caMAT\u5de5\u5177\uff0cHeap\u5de5\u5177\u7528\u4e8e\u5927\u81f4\u5206\u6790\u662f\u5426\u5b58\u5728\u201c\u5185\u5b58\u6cc4\u6f0f\u201d\uff0c\u800cMAT\u5de5\u5177\u5219\u7528\u4e8e\u5206\u6790\u201c\u5185\u5b58\u6cc4\u6f0f\u201d\u53d1\u751f\u5728\u54ea\u91cc\u3002<\/p>\n
Heap\u5de5\u5177\u7684\u4f7f\u7528\u4ecb\u7ecd<\/p>\n
\u5177\u4f53\u64cd\u4f5c<\/p>\n \u6211\u4eec\u5148\u6a21\u62df\u4e00\u4e0b\u5185\u5b58\u6cc4\u6f0f\uff0c\u7136\u540e\u901a\u8fc7Heap\u5de5\u5177\u6765\u5224\u65ad\u4e00\u4e0b\u662f\u5426\u5b58\u5728\u5185\u5b58\u6cc4\u6f0f\u3002 [java]public class LeakAty extends Activity {<\/p>\n @Override }<\/p>\n \/** @Override \u4e0a\u8ff0\u7684\u4ee3\u7801\u5b58\u5728\u5185\u5b58\u6cc4\u6f0f\uff0cnew Runnable(){}\u662f\u4e00\u4e2a\u975e\u9759\u6001\u7684\u533f\u540d\u5185\u90e8\u7c7b\uff0c\u6240\u4ee5\u5b83\u4f1a\u5f3a\u5f15\u7528\u521b\u5efa\u5b83\u7684\u5916\u56f4\u5bf9\u8c61LeakAty\uff0c\u6211\u4eec\u6765\u6d4b\u8bd5\u4e00\u4e0b\u5185\u5b58\u6cc4\u6f0f\u7684\u8fc7\u7a0b\uff0c\u5f00\u542f\u624b\u673a\u7684\u65b9\u5411\u65cb\u8f6c\u529f\u80fd\uff0c\u4e0d\u65ad\u5730\u65cb\u8f6c\u624b\u673a\uff0c\u8ba9LeakAty\u4e0d\u65ad\u5730\u521b\u5efa\u65b0\u7684\u5b9e\u4f8b\u3002\u7406\u8bba\u4e0a\u5982\u679c\u4e0d\u5b58\u5728\u4e0a\u8ff0\u6cc4\u6f0f\u7684\u4ee3\u7801\uff0c\u4e4b\u524d\u7684Activity\u4f1a\u5728onDestory\u4e4b\u540e\u88ab\u56de\u6536\u5185\u5b58\u3002\u800c\u4e00\u65e6\u5b58\u5728\u4e0a\u8ff0\u6cc4\u6f0f\u7684\u4ee3\u7801\uff0c\u65b0\u521b\u5efa\u7684Ruannale\u5b9e\u4f8b\u4f1a\u4e00\u76f4\u5904\u4e8e\u8fd0\u884c\u72b6\u6001\uff0c\u5b83\u4e0d\u4f1a\u88ab\u56de\u6536\uff0c\u800c\u5b83\u5f3a\u5f15\u7528\u7684LeakAty\u5f53\u7136\u4e5f\u4e0d\u4f1a\u88ab\u56de\u6536\uff0c\u6240\u4ee5\u5728\u5c4f\u5e55\u4e0d\u65ad\u65cb\u8f6c\uff0c\u4e4b\u524d\u521b\u5efa\u7684LeakAty\u5c31\u4e0d\u4f1a\u88ab\u91ca\u653e\uff0c\u4f1a\u5bfc\u81f4\u65cb\u8f6cn\u6b21\uff0c\u5185\u5b58\u4e2d\u5c31\u5b58\u5728n+1\u4e2a\u7684LeakAty\u5b9e\u4f8b\u3002 \u4e0a\u56fe\u7684data object\u7684Total Size\u7684\u5927\u5c0f\u4e3a1.031M\u3002\u7ecf\u8fc7\u591a\u6b21\u7684\u65cb\u8f6c\u5c4f\u5e55\u4e4b\u540e\uff0c\u6211\u4eec\u518d\u770b\u4e00\u4e0b\u622a\u56fe<\/p>\n Total Size\u53d8\u6210\u4e862.059M\uff0c\u4ece1.031M\u52302.059M\uff0c\u6bcf\u6b21\u8c03\u7528GC\u7684\u8fc7\u7a0b\u4e2ddata object\u7684\u603b\u5927\u5c0f\u6ca1\u6709\u56de\u843d\uff0c\u6240\u4ee5\u53ef\u4ee5\u8bc1\u5b9e\u4e0a\u9762\u7684\u4ee3\u7801\u786e\u5b9e\u662f\u5b58\u5728\u5185\u5b58\u6cc4\u6f0f\u7684\u95ee\u9898\uff0c\u90a3\u4e48\u6cc4\u6f0f\u53d1\u751f\u5728\u54ea\u91cc\uff1f\u7b54\u6848\u53ef\u4ee5\u901a\u8fc7MAT\u5de5\u5177\u6765\u5206\u6790\u5f97\u5230\u3002<\/p>\n \u4e09\u3001\u5185\u5b58\u6cc4\u6f0f\u7684\u5206\u6790\u5de5\u5177MAT<\/strong><\/p>\n \u8981\u901a\u8fc7MAT\u5206\u6790\uff0c\u9700\u8981\u63d0\u4f9b\u4e00\u4e2a.hprof\u6587\u4ef6\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u201dDump HPROF file\u201d\u6309\u94ae\u8f6c\u5b58\u5f53\u524d\u7684\u5806\u5185\u5b58\u4fe1\u606f\u3002\u6211\u4eec\u5c06\u5176\u4fdd\u5b58\u4e3a1.hprof\u3002<\/p>\n \u5bfc\u51fa\u76841.hprof\u7684\u683c\u5f0f\u9700\u8981\u901a\u8fc7..\\sdk\\tools\\\u76ee\u5f55\u4e0b\u7684hprof-conv.exe\u5de5\u5177\u8fdb\u884c\u8f6c\u6362\u624d\u80fd\u88abMAT\u6210\u529f\u5bfc\u5165\uff0c\u6211\u4eec\u5c06\u5176\u8f6c\u6362\u6210out1.hprof \u5c06out1.hprof\u5bfc\u5165\u5230MAT\u5de5\u5177\u4e2d,File->Open Heap Dump\u2026<\/p>\n \u70b9\u51fb\u5de6\u8fb9\u7684\u6807\u7b7eOverview,Actions->Histogram<\/p>\n \u5728Histogram\u754c\u9762\u4e2d\uff0c\u56e0\u4e3a\u6211\u4eec\u60f3\u8981\u77e5\u9053Activity\u662f\u5426\u6cc4\u6f0f\u4e86\uff0c\u6240\u4ee5\u8f93\u5165\u5173\u952e\u8bcdActivity,\u7136\u540e\u6309\u4e0b\u56de\u8f66\u952e\u3002<\/p>\n \u4e4b\u540e\u4fbf\u53ef\u4ee5\u5f97\u5230Activity\u7684\u76f8\u5173\u7684\u641c\u7d22\u7ed3\u679c,\u4e0b\u56fe\u7684\u641c\u7d22\u7ed3\u679c\u4e2dActivity\u7684\u5b9e\u4f8b\u67097\u4e2a\u3002\u70b9\u51fb\u9009\u4e2d\u4e0b\u56fe\u6807\u7ea2\u8272\u6846\u6846\u7684\u5730\u65b9\uff0c\u53f3\u952e->Merge Shortest Paths to GC Roots->exclude all phantom\/weak\/soft etc. references\u3002\u6392\u9664\u865a\u5f15\u7528\u3001\u5f31\u5f15\u7528\u3001\u8f6f\u5f15\u7528\u7684\u5b9e\u4f8b\uff0c\u5269\u4e0b\u7684\u90fd\u662f\u5f3a\u5f15\u7528\u5b9e\u4f8b\u3002<\/p>\n \u4ece\u8fc7\u6ee4\u51fa\u6765\u7684\u5f3a\u5f15\u7528\u7684\u5217\u8868\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u8fd9\u4e03\u4e2a\u5b9e\u4f8b\u90fd\u662f\u88abThread\u6240\u5f15\u7528\u4e86\u3002\u6240\u4ee5\u8bc1\u5b9e\u4e0a\u9762\u7684\u4ee3\u7801\u786e\u5b9e\u5b58\u5728\u5185\u5b58\u6cc4\u6f0f\u3002<\/p>\n![\"201601120923191\"](\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2016\/03\/201601120923191.jpg\")
<\/a><\/p>\n\n
\n\u4e0a\u4e00\u6bb5\u5b58\u5728\u5185\u5b58\u6cc4\u6f0f\u7684\u4ee3\u7801\uff1a<\/p>\n
\n protected void onCreate(Bundle savedInstanceState) {
\n super.onCreate(savedInstanceState);
\n setContentView(R.layout.aty_leak);
\n testLeak();<\/p>\n
\n * \u6d4b\u8bd5\u5185\u5b58\u6cc4\u6f0f\u7684\u4ee3\u7801
\n *\/
\n private void testLeak() {
\n new Thread(new Runnable() {<\/p>\n
\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[\/java]<\/p>\n
\nHeap\u5de5\u5177\u7b2c\u4e00\u6b21\u6309\u4e0bCause GC\u6309\u94ae\u7684\u622a\u56fe:<\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n
\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n