{"id":1022,"date":"2026-08-29T15:59:06","date_gmt":"2026-08-29T15:59:06","guid":{"rendered":"https:\/\/boochlin.com\/?p=1022"},"modified":"2026-08-29T15:59:06","modified_gmt":"2026-08-29T15:59:06","slug":"%e8%aa%aa%e5%88%b0%e5%ba%95%e6%b2%92%e6%9c%89%e5%90%90%e6%a7%bd%e4%bb%a5%e5%89%8d%e8%87%aa%e5%b7%b1%e5%af%ab%e7%9a%84-code-%e4%bb%a3%e8%a1%a8%e4%bd%a0%e6%b2%92%e9%80%b2%e6%ad%a5-threadpoolmanager","status":"publish","type":"post","link":"https:\/\/boochlin.com\/?p=1022","title":{"rendered":"\u8aaa\u5230\u5e95\u6c92\u6709\u5410\u69fd\u4ee5\u524d\u81ea\u5df1\u5beb\u7684 code \u4ee3\u8868\u4f60\u6c92\u9032\u6b65-ThreadPoolManager \u7684\u539f\u7f6a"},"content":{"rendered":"\n

<\/p>\n\n\n\n

\u6bcf\u6b21\u63a5\u624b\u820a\u5c08\u6848\uff0c\u5341\u500b\u6709\u4e5d\u500b\u6703\u770b\u5230\u4e00\u500b\u5168\u5bb6\u6876 ThreadPoolManager<\/code>\u3002\u56e0\u70ba\u9019\u662f\u6211\u7684\u8d77\u624b\u5f0f\uff0c\u672c\u8cea\u4e0a\u662f\u70ba\u4e86\u907f\u514d\u7cfb\u7d71\u8cc7\u6e90\u88ab\u62bd\u4e7e\u7684\u300c\u7bc0\u6d41\u95a5\u300d\u3002<\/p>\n\n\n\n

\u6bcf new \u4e00\u689d Thread\uff0c\u4f60\u90fd\u5728\u71d2 RAM<\/h2>\n\n\n\n

\u5728 Linux \u5e95\u5c64\uff0c\u6bcf new<\/code> \u4e00\u689d Java \u57f7\u884c\u7dd2\uff0c\u4f5c\u696d\u7cfb\u7d71\u5c31\u5f97\u5728 Kernel \u614b\u914d\u7f6e\u8cc7\u6599\u7d50\u69cb\uff0c\u4e26\u5207\u51fa\u7d04 1MB \u7684\u8a18\u61b6\u9ad4\u7576\u4f5c Thread Stack\u3002<\/p>\n\n\n\n

\u5341\u5e7e\u689d\u6c92\u4e8b\u5e79\u7684\u57f7\u884c\u7dd2\u639b\u5728\u90a3\u908a\u767c\u5446\uff0c\u5149\u7ad9\u8457\u5c31\u767d\u767d\u5674\u6389\u5e7e\u5341 MB\u3002\u800c\u7576\u5341\u5e7e\u689d\u57f7\u884c\u7dd2\u5728\u80cc\u666f\u722d\u6436 CPU \u6642\uff0c\u771f\u6b63\u81f4\u547d\u7684\u662f\u983b\u7e41\u7684 Context Switch<\/strong>\uff1aCPU \u5fc5\u9808\u4e0d\u65b7\u4fdd\u5b58\u8207\u6062\u5fa9\u66ab\u5b58\u5668\uff0c\u983b\u7e41\u89f8\u767c TLB Miss \u4e26\u628a L1\/L2 \u5feb\u53d6\u5f37\u5236\u6d17\u6389\u91cd\u8f09\u3002\u5c0e\u81f4 CPU \u7b97\u529b\u5168\u8017\u5728\u300c\u6392\u7a0b\u5207\u63db\u300d\u7684\u7121\u6548 overhead \u4e0a\uff0cUI \u57f7\u884c\u7dd2\u76f4\u63a5\u5361\u6b7b\u6389\u5e40\u3002<\/p>\n\n\n\n

Google \u7576\u5e74\u7684 AsyncTask \u5230\u5e95\u6709\u591a\u641e\u7b11<\/h2>\n\n\n\n
    \n
  • \u5168 App \u6392\u540c\u4e00\u500b\u968a\u5217<\/strong>\uff1aAndroid 3.0 \u5f8c\u9810\u8a2d\u5171\u7528\u5168\u57df SERIAL_EXECUTOR<\/code>\u3002\u6a21\u7d44 A \u5361\u4f4f 30 \u79d2\uff0c\u6a21\u7d44 B \u5728\u53e6\u4e00\u500b\u756b\u9762\u53ea\u60f3\u8b80 2KB \u672c\u5730\u5feb\u53d6\uff0c\u4e5f\u5f97\u5728\u5f8c\u9762\u4e56\u4e56\u6392\u968a\u7f70\u7ad9 30 \u79d2\uff1b<\/li>\n\n\n\n
  • \u65cb\u8f49\u87a2\u5e55\u8207\u751f\u547d\u9031\u671f\u812b\u7bc0<\/strong>\uff1a\u5beb\u6210\u5167\u90e8\u985e\u5225\u6703\u5f37\u5f15\u7528 Activity \u5c0e\u81f4 Memory Leak\u3002\u66f4\u6158\u7684\u662f Fragment \u5df2\u7d93\u88ab Detach\uff0c\u80cc\u666f\u4efb\u52d9\u8dd1\u5b8c\u5728\u4e3b\u7dda\u7a0b\u547c\u53eb requireActivity()<\/code>\uff0c\u76f4\u63a5\u5674\u51fa IllegalStateException: Fragment not attached<\/code> \u7576\u5834\u9583\u9000\uff1b<\/li>\n\n\n\n
  • \u8de8\u7248\u672c\u7cbe\u795e\u5206\u88c2\u8207 Reject \u5d29\u6f70<\/strong>\uff1aAndroid 1.5 \u662f\u55ae\u57f7\u884c\u7dd2\uff1b1.6~2.3 \u9810\u8a2d\u6c60\u914d\u7f6e\u70ba Core=5, Queue=10, Max=128<\/code>\uff0c\u53ea\u8981\u77ac\u9593\u767c\u51fa\u8d85\u904e 138 \u500b\u4efb\u52d9\uff0c\u7b2c 139 \u500b\u76f4\u63a5\u5674\u51fa RejectedExecutionException<\/code> \u9583\u9000\uff1b\u5230\u4e86 3.0 \u6eff\u5730\u54c0\u9d3b\u904d\u91ce\uff0cGoogle \u624d\u8a8d\u616b\u7e2e\u56de\u55ae\u57f7\u884c\u7dd2\u4e32\u5217\uff1b<\/li>\n\n\n\n
  • cancel(true)<\/code> \u53ea\u662f\u500b\u5fc3\u7406\u5b89\u6170\u5291<\/strong>\uff1a\u5e95\u5c64 Thread \u6839\u672c\u4e0d\u6703\u505c\uff0c\u8017\u96fb\u6b7b\u5faa\u74b0\u7e7c\u7e8c\u5728\u80cc\u666f\u8dd1\u5230\u5929\u8352\u5730\u8001\uff0c\u53ea\u662f\u8dd1\u5b8c\u4e0d\u56de\u547c\u800c\u5df2\u3002<\/li>\n<\/ul>\n\n\n\n

    \u771f\u5730\u96f7<\/h2>\n\n\n\n

    \u5f8c\u7aef\u9762\u8a66\u611b\u8003\u7684\u6b7b\u9396\uff0c\u5728 Android \u4e0a\u5f88\u5c11\u898b\uff0c\u56e0\u70ba 5 \u79d2\u5361\u6b7b\u7cfb\u7d71\u5c31\u76f4\u63a5\u5674 ANR \u9583\u9000\u4e86\u3002\u4e00\u822c App \u771f\u6b63\u5929\u5929\u5728 Crashlytics \u4e0a\u699c\u7684\uff0c\u5168\u662f\u4e0b\u9762\u9019\u4e09\u7a2e\u901a\u7528\u5730\u96f7\uff1a<\/p>\n\n\n\n

    1. \u641c\u5c0b\u8207\u9023\u9ede\u6642\u7684\u300c\u6642\u5e8f\u932f\u4e82\u820a\u84cb\u65b0\u300d<\/h3>\n\n\n\n

    \u4f7f\u7528\u8005\u5728\u641c\u5c0b\u6846\u8f38\u5165\u300cA\u300d\u767c\u51fa\u8acb\u6c42\uff08\u8017\u6642 2 \u79d2\uff09\uff0c\u7dca\u63a5\u8457\u8f38\u5165\u300cAB\u300d\u767c\u51fa\u8acb\u6c42\uff08\u8017\u6642 0.2 \u79d2\uff09\u3002\u7d50\u679c\u300cAB\u300d\u7684\u7d50\u679c\u5148\u8dd1\u51fa\u4f86\uff0c\u96a8\u5f8c\u300cA\u300d\u7684\u820a\u7d50\u679c\u624d\u56de\u4f86\uff0c\u76f4\u63a5\u628a\u6b63\u78ba\u7684\u65b0\u756b\u9762\u7121\u60c5\u8986\u84cb\u6389<\/strong>\u3002\u9023\u6309\u5169\u6b21\u6309\u9215\u3001\u5207\u63db Tab \u4e5f\u540c\u7406\uff0c\u52a0\u9396\u6839\u672c\u6c92\u7528\uff0c\u9396\u53ea\u7ba1\u4f75\u767c\u4e0d\u7ba1\u8ab0\u5148\u8ab0\u5f8c\u3002<\/p>\n\n\n\n

    2. \u96e2\u958b\u756b\u9762\u5f8c\u56de\u547c View \u7684<\/h3>\n\n\n\n

    \u80cc\u666f\u57f7\u884c\u7dd2\u505a\u5b8c\u5de5\u4f5c\uff0c\u8208\u9ad8\u91c7\u70c8\u5730\u7528 mainHandler.post()<\/code> \u56de\u4e3b\u7dda\u7a0b\u66f4\u65b0\u756b\u9762\u3002\u7d50\u679c\u4f7f\u7528\u8005\u65e9\u5c31\u6309\u8fd4\u56de\u9000\u51fa\u4e86\uff0cFragment \u5df2\u7d93\u88ab Detach \u6216 View \u5df2\u7d93\u92b7\u6bc0\uff0c\u76f4\u63a5\u5674\u51fa IllegalStateException<\/code> \u9583\u9000\u3002<\/p>\n\n\n\n

    <\/h3>\n\n\n\n

    \u73fe\u4ee3 Android \u600e\u9ebc\u5beb\uff1f\u5225\u518d\u624b\u5e79\u4e86<\/h2>\n\n\n\n

    \u73fe\u5728\u65e9\u5c31\u4e0d\u51c6\u4f60\u81ea\u5df1\u5beb ThreadPool \u4e86\uff0c\u5168\u9762\u8f49\u5411 Kotlin Coroutines<\/strong>\uff0c\u7cbe\u6e96\u7834\u89e3\u4e0a\u8ff0\u4e09\u5927\u5730\u96f7\uff1a<\/p>\n\n\n\n

      \n
    • \u7b97\u529b\u8207 I\/O \u56b4\u683c\u5206\u6d41<\/strong>\uff1a\u9ad8\u5bc6\u5ea6\u904b\u7b97\u4ea4\u7d66 Dispatchers.Default<\/code>\uff08\u7cbe\u6e96\u7d81\u5b9a CPU \u5be6\u9ad4\u6838\u5fc3\u6578\uff0c\u4fdd\u5e95 2 \u689d\uff09\uff0c\u7db2\u8def\u8207\u8cc7\u6599\u5eab\u7b49\u963b\u585e\u578b\u4efb\u52d9\u5207\u7d66 Dispatchers.IO<\/code>\uff1b<\/li>\n\n\n\n
    • \u751f\u547d\u9031\u671f\u81ea\u52d5\u6b62\u640d<\/strong>\uff1a\u4e1f\u7d66 viewModelScope<\/code>\uff0c\u4f7f\u7528\u8005\u9000\u51fa\u9801\u9762\u6642\u975e\u540c\u6b65\u4efb\u52d9\u5168\u9ad4\u81ea\u52d5 Cancel\uff0c\u6ec5\u7d55 Memory Leak \u8207 Detach \u9583\u9000\uff1b<\/li>\n\n\n\n
    • \u6642\u5e8f\u7cbe\u6e96\u8986\u84cb<\/strong>\uff1a\u7528 Flow.debounce(300)<\/code> \u64cb\u4f4f\u9ad8\u983b\u9023\u9ede\uff0c\u518d\u642d\u914d collectLatest()<\/code>\u2014\u2014\u53ea\u8981\u65b0\u8acb\u6c42\u4e00\u9032\u4f86\uff0c\u5e95\u5c64\u81ea\u52d5 Cancel \u6389\u524d\u4e00\u6b21\u9084\u5728\u8dd1\u7684\u820a\u8acb\u6c42\uff0c\u9023 isCancelled<\/code> \u65d7\u6a19\u90fd\u4e0d\u7528\u5beb\uff1b<\/li>\n\n\n\n
    • \u975e\u963b\u585e\u639b\u8d77\u6ec5\u7d55 OOM<\/strong>\uff1aCoroutines \u7684 suspend<\/code> \u7279\u6027\u8b93\u7db2\u8def\u8acb\u6c42\u300c\u639b\u8d77\u800c\u4e0d\u963b\u585e\u57f7\u884c\u7dd2\u300d\uff0c\u4e00\u689d Thread \u5c31\u80fd\u6297\u4e0a\u842c\u500b\u4f75\u767c\uff0c\u5fb9\u5e95\u544a\u5225 Thread \u66b4\u589e\u5f15\u767c\u7684 pthread_create failed<\/code>\u3002<\/li>\n<\/ul>\n\n\n\n

      <\/p>\n","protected":false},"excerpt":{"rendered":"

      \u6bcf\u6b21\u63a5\u624b\u820a\u5c08\u6848\uff0c\u5341\u500b\u6709\u4e5d\u500b\u6703\u770b\u5230\u4e00\u500b\u5168\u5bb6\u6876 ThreadPoolManager\u3002\u56e0\u70ba\u9019\u662f\u6211\u7684\u8d77\u624b\u5f0f\uff0c\u672c\u8cea\u4e0a\u662f\u70ba\u4e86\u907f\u514d\u7cfb\u7d71\u8cc7\u6e90\u88ab\u62bd\u4e7e\u7684\u300c\u7bc0\u6d41\u95a5\u300d\u3002<\/p>\n","protected":false},"author":1,"featured_media":1026,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[40,50,5,36,81],"tags":[],"_links":{"self":[{"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/posts\/1022"}],"collection":[{"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1022"}],"version-history":[{"count":5,"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/posts\/1022\/revisions"}],"predecessor-version":[{"id":1028,"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/posts\/1022\/revisions\/1028"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/media\/1026"}],"wp:attachment":[{"href":"https:\/\/boochlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1022"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1022"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1022"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}