import{_ as l}from"./plugin-vue_export-helper.21dcd24c.js";import{r as n,o as h,c as t,a as e,b as r,e as o,d as a}from"./app.36bfa2ec.js";const d={},c=o('<h1 id="java-\u5E76\u53D1\u7F16\u7A0B\u516B\u80A1\u6587-\u80CC\u8BF5\u7248-\u5FC5\u770B" tabindex="-1"><a class="header-anchor" href="#java-\u5E76\u53D1\u7F16\u7A0B\u516B\u80A1\u6587-\u80CC\u8BF5\u7248-\u5FC5\u770B" aria-hidden="true">#</a> Java \u5E76\u53D1\u7F16\u7A0B\u516B\u80A1\u6587\uFF08\u80CC\u8BF5\u7248\uFF09\u5FC5\u770B\u{1F44D}</h1><h3 id="\u7B80\u8FF0java\u5185\u5B58\u6A21\u578B-jmm" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0java\u5185\u5B58\u6A21\u578B-jmm" aria-hidden="true">#</a> \u7B80\u8FF0Java\u5185\u5B58\u6A21\u578B\uFF08JMM\uFF09</h3><p>Java\u5185\u5B58\u6A21\u578B\u5B9A\u4E49\u4E86\u7A0B\u5E8F\u4E2D\u5404\u79CD\u53D8\u91CF\u7684\u8BBF\u95EE\u89C4\u5219\uFF1A</p><ul><li>\u6240\u6709\u53D8\u91CF\u90FD\u5B58\u50A8\u5728\u4E3B\u5B58\uFF0C\u6BCF\u4E2A\u7EBF\u7A0B\u90FD\u6709\u81EA\u5DF1\u7684\u5DE5\u4F5C\u5185\u5B58\u3002</li><li>\u5DE5\u4F5C\u5185\u5B58\u4E2D\u4FDD\u5B58\u4E86\u88AB\u8BE5\u7EBF\u7A0B\u4F7F\u7528\u7684\u53D8\u91CF\u7684\u4E3B\u5B58\u526F\u672C\uFF0C\u7EBF\u7A0B\u5BF9\u53D8\u91CF\u7684\u6240\u6709\u64CD\u4F5C\u90FD\u5FC5\u987B\u5728\u5DE5\u4F5C\u7A7A\u95F4\u8FDB\u884C\uFF0C\u4E0D\u80FD\u76F4\u63A5\u8BFB\u5199\u4E3B\u5185\u5B58\u6570\u636E\u3002</li><li>\u64CD\u4F5C\u5B8C\u6210\u540E\uFF0C\u7EBF\u7A0B\u7684\u5DE5\u4F5C\u5185\u5B58\u901A\u8FC7\u7F13\u5B58\u4E00\u81F4\u6027\u534F\u8BAE\u5C06\u64CD\u4F5C\u5B8C\u7684\u6570\u636E\u5237\u56DE\u4E3B\u5B58\u3002</li></ul><h3 id="\u7B80\u8FF0as-if-serial" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0as-if-serial" aria-hidden="true">#</a> \u7B80\u8FF0as-if-serial</h3><p>\u7F16\u8BD1\u5668\u4F1A\u5BF9\u539F\u59CB\u7684\u7A0B\u5E8F\u8FDB\u884C\u6307\u4EE4\u91CD\u6392\u5E8F\u548C\u4F18\u5316\u3002\u4F46\u4E0D\u7BA1\u600E\u4E48\u91CD\u6392\u5E8F\uFF0C\u5176\u7ED3\u679C\u90FD\u5FC5\u987B\u548C\u7528\u6237\u539F\u59CB\u7A0B\u5E8F\u8F93\u51FA\u7684\u9884\u5B9A\u7ED3\u679C\u4FDD\u6301\u4E00\u81F4\u3002</p><h3 id="\u7B80\u8FF0happens-before\u516B\u5927\u89C4\u5219" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0happens-before\u516B\u5927\u89C4\u5219" aria-hidden="true">#</a> \u7B80\u8FF0happens-before\u516B\u5927\u89C4\u5219</h3><ul><li>\u7A0B\u5E8F\u6B21\u5E8F\u89C4\u5219\uFF1A\u4E00\u4E2A\u7EBF\u7A0B\u5185\uFF0C\u6309\u7167\u4EE3\u7801\u987A\u5E8F\uFF0C\u4E66\u5199\u5728\u524D\u9762\u7684\u64CD\u4F5C\u5148\u884C\u53D1\u751F\u4E8E\u4E66\u5199\u5728\u540E\u9762\u7684\u64CD\u4F5C\uFF1B</li><li>\u9501\u5B9A\u89C4\u5219\uFF1A\u4E00\u4E2AunLock\u64CD\u4F5C\u5148\u884C\u53D1\u751F\u4E8E\u540E\u9762\u5BF9\u540C\u4E00\u4E2A\u9501\u7684lock\u64CD\u4F5C\uFF1B</li><li>volatile\u53D8\u91CF\u89C4\u5219\uFF1A\u5BF9\u4E00\u4E2A\u53D8\u91CF\u7684\u5199\u64CD\u4F5C\u5148\u884C\u53D1\u751F\u4E8E\u540E\u9762\u5BF9\u8FD9\u4E2A\u53D8\u91CF\u7684\u8BFB\u64CD\u4F5C\uFF1B</li><li>\u4F20\u9012\u89C4\u5219\uFF1A\u5982\u679C\u64CD\u4F5CA\u5148\u884C\u53D1\u751F\u4E8E\u64CD\u4F5CB\uFF0C\u800C\u64CD\u4F5CB\u53C8\u5148\u884C\u53D1\u751F\u4E8E\u64CD\u4F5CC\uFF0C\u5219\u53EF\u4EE5\u5F97\u51FA\u64CD\u4F5CA\u5148\u884C\u53D1\u751F\u4E8E\u64CD\u4F5CC\uFF1B</li><li>\u7EBF\u7A0B\u542F\u52A8\u89C4\u5219\uFF1AThread\u5BF9\u8C61\u7684start()\u65B9\u6CD5\u5148\u884C\u53D1\u751F\u4E8E\u6B64\u7EBF\u7A0B\u7684\u6BCF\u4E2A\u4E00\u4E2A\u52A8\u4F5C\uFF1B</li><li>\u7EBF\u7A0B\u4E2D\u65AD\u89C4\u5219\uFF1A\u5BF9\u7EBF\u7A0Binterrupt()\u65B9\u6CD5\u7684\u8C03\u7528\u5148\u884C\u53D1\u751F\u4E8E\u88AB\u4E2D\u65AD\u7EBF\u7A0B\u7684\u4EE3\u7801\u68C0\u6D4B\u5230\u4E2D\u65AD\u4E8B\u4EF6\u7684\u53D1\u751F\uFF1B</li><li>\u7EBF\u7A0B\u7EC8\u7ED3\u89C4\u5219\uFF1A\u7EBF\u7A0B\u4E2D\u6240\u6709\u7684\u64CD\u4F5C\u90FD\u5148\u884C\u53D1\u751F\u4E8E\u7EBF\u7A0B\u7684\u7EC8\u6B62\u68C0\u6D4B\uFF0C\u6211\u4EEC\u53EF\u4EE5\u901A\u8FC7Thread.join()\u65B9\u6CD5\u7ED3\u675F\u3001Thread.isAlive()\u7684\u8FD4\u56DE\u503C\u624B\u6BB5\u68C0\u6D4B\u5230\u7EBF\u7A0B\u5DF2\u7ECF\u7EC8\u6B62\u6267\u884C\uFF1B</li><li>\u5BF9\u8C61\u7EC8\u7ED3\u89C4\u5219\uFF1A\u4E00\u4E2A\u5BF9\u8C61\u7684\u521D\u59CB\u5316\u5B8C\u6210\u5148\u884C\u53D1\u751F\u4E8E\u4ED6\u7684finalize()\u65B9\u6CD5\u7684\u5F00\u59CB\uFF1B</li></ul><h3 id="as-if-serial-\u548C-happens-before-\u7684\u533A\u522B" tabindex="-1"><a class="header-anchor" href="#as-if-serial-\u548C-happens-before-\u7684\u533A\u522B" aria-hidden="true">#</a> as-if-serial \u548C happens-before \u7684\u533A\u522B</h3><p>as-if-serial \u4FDD\u8BC1\u5355\u7EBF\u7A0B\u7A0B\u5E8F\u7684\u6267\u884C\u7ED3\u679C\u4E0D\u53D8\uFF0Chappens-before \u4FDD\u8BC1\u6B63\u786E\u540C\u6B65\u7684\u591A\u7EBF\u7A0B\u7A0B\u5E8F\u7684\u6267\u884C\u7ED3\u679C\u4E0D\u53D8\u3002</p><h3 id="\u7B80\u8FF0\u539F\u5B50\u6027\u64CD\u4F5C" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0\u539F\u5B50\u6027\u64CD\u4F5C" aria-hidden="true">#</a> \u7B80\u8FF0\u539F\u5B50\u6027\u64CD\u4F5C</h3><p>\u4E00\u4E2A\u64CD\u4F5C\u6216\u8005\u591A\u4E2A\u64CD\u4F5C\uFF0C\u8981\u4E48\u5168\u90E8\u6267\u884C\u5E76\u4E14\u6267\u884C\u7684\u8FC7\u7A0B\u4E0D\u4F1A\u88AB\u4EFB\u4F55\u56E0\u7D20\u6253\u65AD\uFF0C\u8981\u4E48\u5C31\u90FD\u4E0D\u6267\u884C\uFF0C\u8FD9\u5C31\u662F\u539F\u5B50\u6027\u64CD\u4F5C\u3002</p><h3 id="\u7B80\u8FF0\u7EBF\u7A0B\u7684\u53EF\u89C1\u6027" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0\u7EBF\u7A0B\u7684\u53EF\u89C1\u6027" aria-hidden="true">#</a> \u7B80\u8FF0\u7EBF\u7A0B\u7684\u53EF\u89C1\u6027</h3><p>\u53EF\u89C1\u6027\u6307\u5F53\u4E00\u4E2A\u7EBF\u7A0B\u4FEE\u6539\u4E86\u5171\u4EAB\u53D8\u91CF\u65F6\uFF0C\u5176\u4ED6\u7EBF\u7A0B\u80FD\u591F\u7ACB\u5373\u5F97\u77E5\u4FEE\u6539\u3002volatile\u3001synchronized\u3001final \u5173\u952E\u5B57\u90FD\u80FD\u4FDD\u8BC1\u53EF\u89C1\u6027\u3002</p><h3 id="\u7B80\u8FF0\u6709\u5E8F\u6027" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0\u6709\u5E8F\u6027" aria-hidden="true">#</a> \u7B80\u8FF0\u6709\u5E8F\u6027</h3><p>\u867D\u7136\u591A\u7EBF\u7A0B\u5B58\u5728\u5E76\u53D1\u548C\u6307\u4EE4\u4F18\u5316\u7B49\u64CD\u4F5C\uFF0C\u4F46\u5728\u672C\u7EBF\u7A0B\u5185\u89C2\u5BDF\u8BE5\u7EBF\u7A0B\u7684\u6240\u6709\u6267\u884C\u64CD\u4F5C\u662F\u6709\u5E8F\u7684\u3002</p><h3 id="\u7B80\u8FF0java\u4E2Dvolatile\u5173\u952E\u5B57\u4F5C\u7528" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0java\u4E2Dvolatile\u5173\u952E\u5B57\u4F5C\u7528" aria-hidden="true">#</a> \u7B80\u8FF0Java\u4E2Dvolatile\u5173\u952E\u5B57\u4F5C\u7528</h3><ul><li>\u4FDD\u8BC1\u53D8\u91CF\u5BF9\u6240\u6709\u7EBF\u7A0B\u7684\u53EF\u89C1\u6027\u3002\u5F53\u4E00\u4E2A\u7EBF\u7A0B\u4FEE\u6539\u4E86\u53D8\u91CF\u503C\uFF0C\u65B0\u503C\u5BF9\u4E8E\u5176\u4ED6\u7EBF\u7A0B\u6765\u8BF4\u662F\u7ACB\u5373\u53EF\u4EE5\u5F97\u77E5\u7684\u3002</li><li>\u7981\u6B62\u6307\u4EE4\u91CD\u6392\u3002\u4F7F\u7528 volatile \u53D8\u91CF\u8FDB\u884C\u5199\u64CD\u4F5C\uFF0C\u7F16\u8BD1\u5668\u5728\u751F\u6210\u5B57\u8282\u7801\u65F6\uFF0C\u4F1A\u5728\u6307\u4EE4\u5E8F\u5217\u4E2D\u63D2\u5165\u5185\u5B58\u5C4F\u969C\u6765\u7981\u6B62\u7279\u5B9A\u7C7B\u578B\u7684\u5904\u7406\u5668\u8FDB\u884C\u91CD\u6392\u5E8F\u3002</li></ul><h3 id="java\u7EBF\u7A0B\u7684\u5B9E\u73B0\u65B9\u5F0F" tabindex="-1"><a class="header-anchor" href="#java\u7EBF\u7A0B\u7684\u5B9E\u73B0\u65B9\u5F0F" aria-hidden="true">#</a> Java\u7EBF\u7A0B\u7684\u5B9E\u73B0\u65B9\u5F0F</h3><ul><li>\u5B9E\u73B0Runnable\u63A5\u53E3</li><li>\u7EE7\u627FThread\u7C7B</li><li>\u5B9E\u73B0Callable\u63A5\u53E3</li></ul><h3 id="\u7B80\u8FF0java\u7EBF\u7A0B\u7684\u72B6\u6001" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0java\u7EBF\u7A0B\u7684\u72B6\u6001" aria-hidden="true">#</a> \u7B80\u8FF0Java\u7EBF\u7A0B\u7684\u72B6\u6001</h3><p>\u7EBF\u7A0B\u72B6\u6001\u6709 NEW\u3001RUNNABLE\u3001BLOCK\u3001WAITING\u3001TIMED_WAITING\u3001THERMINATED</p><ul><li>NEW\uFF1A\u65B0\u5EFA\u72B6\u6001\uFF0C\u7EBF\u7A0B\u88AB\u521B\u5EFA\u4E14\u672A\u542F\u52A8\uFF0C\u6B64\u65F6\u8FD8\u672A\u8C03\u7528 start \u65B9\u6CD5\u3002</li><li>RUNNABLE\uFF1A\u8FD0\u884C\u72B6\u6001\u3002\u8868\u793A\u7EBF\u7A0B\u6B63\u5728JVM\u4E2D\u6267\u884C\uFF0C\u4F46\u662F\u8FD9\u4E2A\u6267\u884C\uFF0C\u4E0D\u4E00\u5B9A\u771F\u7684\u5728\u8DD1\uFF0C\u4E5F\u53EF\u80FD\u5728\u6392\u961F\u7B49CPU\u3002</li><li>BLOCKED\uFF1A\u963B\u585E\u72B6\u6001\u3002\u7EBF\u7A0B\u7B49\u5F85\u83B7\u53D6\u9501\uFF0C\u9501\u8FD8\u6CA1\u83B7\u5F97\u3002</li><li>WAITING\uFF1A\u7B49\u5F85\u72B6\u6001\u3002\u7EBF\u7A0B\u5185run\u65B9\u6CD5\u6267\u884C\u5B8CObject.wait()/Thread.join()\u8FDB\u5165\u8BE5\u72B6\u6001\u3002</li><li>TIMED_WAITING\uFF1A\u9650\u671F\u7B49\u5F85\u3002\u5728\u4E00\u5B9A\u65F6\u95F4\u4E4B\u540E\u8DF3\u51FA\u72B6\u6001\u3002\u8C03\u7528Thread.sleep(long) Object.wait(long) Thread.join(long)\u8FDB\u5165\u72B6\u6001\u3002\u5176\u4E2D\u8FD9\u4E9B\u53C2\u6570\u4EE3\u8868\u7B49\u5F85\u7684\u65F6\u95F4\u3002</li><li>TERMINATED\uFF1A\u7ED3\u675F\u72B6\u6001\u3002\u7EBF\u7A0B\u8C03\u7528\u5B8Crun\u65B9\u6CD5\u8FDB\u5165\u8BE5\u72B6\u6001\u3002</li></ul><h3 id="\u7B80\u8FF0\u7EBF\u7A0B\u901A\u4FE1\u7684\u65B9\u5F0F" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0\u7EBF\u7A0B\u901A\u4FE1\u7684\u65B9\u5F0F" aria-hidden="true">#</a> \u7B80\u8FF0\u7EBF\u7A0B\u901A\u4FE1\u7684\u65B9\u5F0F</h3><ul><li>volatile \u5173\u952E\u8BCD\u4FEE\u9970\u53D8\u91CF\uFF0C\u4FDD\u8BC1\u6240\u6709\u7EBF\u7A0B\u5BF9\u53D8\u91CF\u8BBF\u95EE\u7684\u53EF\u89C1\u6027\u3002</li><li>synchronized\u5173\u952E\u8BCD\u3002\u786E\u4FDD\u591A\u4E2A\u7EBF\u7A0B\u5728\u540C\u4E00\u65F6\u523B\u53EA\u80FD\u6709\u4E00\u4E2A\u5904\u4E8E\u65B9\u6CD5\u6216\u540C\u6B65\u5757\u4E2D\u3002</li><li>wait/notify\u65B9\u6CD5</li><li>IO\u901A\u4FE1</li></ul><h3 id="\u7B80\u8FF0\u7EBF\u7A0B\u6C60" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0\u7EBF\u7A0B\u6C60" aria-hidden="true">#</a> \u7B80\u8FF0\u7EBF\u7A0B\u6C60</h3><p>\u6CA1\u6709\u7EBF\u7A0B\u6C60\u7684\u60C5\u51B5\u4E0B\uFF0C\u591A\u6B21\u521B\u5EFA\uFF0C\u9500\u6BC1\u7EBF\u7A0B\u5F00\u9500\u6BD4\u8F83\u5927\u3002\u5982\u679C\u5728\u5F00\u8F9F\u7684\u7EBF\u7A0B\u6267\u884C\u5B8C\u5F53\u524D\u4EFB\u52A1\u540E\u590D\u7528\u5DF2\u521B\u5EFA\u7684\u7EBF\u7A0B\uFF0C\u53EF\u4EE5\u964D\u4F4E\u5F00\u9500\u3001\u63A7\u5236\u6700\u5927\u5E76\u53D1\u6570\u3002</p><p>\u7EBF\u7A0B\u6C60\u521B\u5EFA\u7EBF\u7A0B\u65F6\uFF0C\u4F1A\u5C06\u7EBF\u7A0B\u5C01\u88C5\u6210\u5DE5\u4F5C\u7EBF\u7A0B Worker\uFF0CWorker \u5728\u6267\u884C\u5B8C\u4EFB\u52A1\u540E\u8FD8\u4F1A\u5FAA\u73AF\u83B7\u53D6\u5DE5\u4F5C\u961F\u5217\u4E2D\u7684\u4EFB\u52A1\u6765\u6267\u884C\u3002</p><p>\u5C06\u4EFB\u52A1\u6D3E\u53D1\u7ED9\u7EBF\u7A0B\u6C60\u65F6\uFF0C\u4F1A\u51FA\u73B0\u4EE5\u4E0B\u51E0\u79CD\u60C5\u51B5</p><ul><li>\u6838\u5FC3\u7EBF\u7A0B\u6C60\u672A\u6EE1\uFF0C\u521B\u5EFA\u4E00\u4E2A\u65B0\u7684\u7EBF\u7A0B\u6267\u884C\u4EFB\u52A1\u3002</li><li>\u5982\u679C\u6838\u5FC3\u7EBF\u7A0B\u6C60\u5DF2\u6EE1\uFF0C\u5DE5\u4F5C\u961F\u5217\u672A\u6EE1\uFF0C\u5C06\u7EBF\u7A0B\u5B58\u50A8\u5728\u5DE5\u4F5C\u961F\u5217\u3002</li><li>\u5982\u679C\u5DE5\u4F5C\u961F\u5217\u5DF2\u6EE1\uFF0C\u7EBF\u7A0B\u6570\u5C0F\u4E8E\u6700\u5927\u7EBF\u7A0B\u6570\u5C31\u521B\u5EFA\u4E00\u4E2A\u65B0\u7EBF\u7A0B\u5904\u7406\u4EFB\u52A1\u3002</li><li>\u5982\u679C\u8D85\u8FC7\u5927\u5C0F\u7EBF\u7A0B\u6570\uFF0C\u6309\u7167\u62D2\u7EDD\u7B56\u7565\u6765\u5904\u7406\u4EFB\u52A1\u3002</li></ul><p>\u7EBF\u7A0B\u6C60\u53C2\u6570\uFF1A</p><ul><li>corePoolSize\uFF1A\u5E38\u9A7B\u6838\u5FC3\u7EBF\u7A0B\u6570\u3002\u8D85\u8FC7\u8BE5\u503C\u540E\u5982\u679C\u7EBF\u7A0B\u7A7A\u95F2\u4F1A\u88AB\u9500\u6BC1\u3002</li><li>maximumPoolSize\uFF1A\u7EBF\u7A0B\u6C60\u80FD\u591F\u5BB9\u7EB3\u540C\u65F6\u6267\u884C\u7684\u7EBF\u7A0B\u6700\u5927\u6570\u3002</li><li>keepAliveTime\uFF1A\u7EBF\u7A0B\u7A7A\u95F2\u65F6\u95F4\uFF0C\u7EBF\u7A0B\u7A7A\u95F2\u65F6\u95F4\u8FBE\u5230\u8BE5\u503C\u540E\u4F1A\u88AB\u9500\u6BC1\uFF0C\u76F4\u5230\u53EA\u5269\u4E0B corePoolSize \u4E2A\u7EBF\u7A0B\u4E3A\u6B62\uFF0C\u907F\u514D\u6D6A\u8D39\u5185\u5B58\u8D44\u6E90\u3002</li><li>workQueue\uFF1A\u5DE5\u4F5C\u961F\u5217\u3002</li><li>threadFactory\uFF1A\u7EBF\u7A0B\u5DE5\u5382\uFF0C\u7528\u6765\u751F\u4EA7\u4E00\u7EC4\u76F8\u540C\u4EFB\u52A1\u7684\u7EBF\u7A0B\u3002</li><li>handler\uFF1A\u62D2\u7EDD\u7B56\u7565\u3002</li></ul><p>\u62D2\u7EDD\u7B56\u7565\u6709\u4EE5\u4E0B\u51E0\u79CD\uFF1A</p><ul><li>AbortPolicy\uFF1A\u4E22\u5F03\u4EFB\u52A1\u5E76\u629B\u51FA\u5F02\u5E38</li><li>CallerRunsPolicy\uFF1A\u91CD\u65B0\u5C1D\u8BD5\u63D0\u4EA4\u8BE5\u4EFB\u52A1</li><li>DiscardOldestPolicy \u629B\u5F03\u961F\u5217\u91CC\u7B49\u5F85\u6700\u4E45\u7684\u4EFB\u52A1\u5E76\u628A\u5F53\u524D\u4EFB\u52A1\u52A0\u5165\u961F\u5217</li><li>DiscardPolicy \u8868\u793A\u76F4\u63A5\u629B\u5F03\u5F53\u524D\u4EFB\u52A1\u4F46\u4E0D\u629B\u51FA\u5F02\u5E38\u3002</li></ul><h3 id="\u7B80\u8FF0executor\u6846\u67B6" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0executor\u6846\u67B6" aria-hidden="true">#</a> \u7B80\u8FF0Executor\u6846\u67B6</h3><p>Executor\u6846\u67B6\u76EE\u7684\u662F\u5C06\u4EFB\u52A1\u63D0\u4EA4\u548C\u4EFB\u52A1\u5982\u4F55\u8FD0\u884C\u5206\u79BB\u5F00\u6765\u7684\u673A\u5236\u3002\u7528\u6237\u4E0D\u518D\u9700\u8981\u4ECE\u4EE3\u7801\u5C42\u8003\u8651\u8BBE\u8BA1\u4EFB\u52A1\u7684\u63D0\u4EA4\u8FD0\u884C\uFF0C\u53EA\u9700\u8981\u8C03\u7528Executor\u6846\u67B6\u5B9E\u73B0\u7C7B\u7684Execute\u65B9\u6CD5\u5C31\u53EF\u4EE5\u63D0\u4EA4\u4EFB\u52A1\u3002</p><h3 id="\u7B80\u8FF0executor\u7684\u7EE7\u627F\u5173\u7CFB" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0executor\u7684\u7EE7\u627F\u5173\u7CFB" aria-hidden="true">#</a> \u7B80\u8FF0Executor\u7684\u7EE7\u627F\u5173\u7CFB</h3><ul><li>Executor\uFF1A\u4E00\u4E2A\u63A5\u53E3\uFF0C\u5176\u5B9A\u4E49\u4E86\u4E00\u4E2A\u63A5\u6536Runnable\u5BF9\u8C61\u7684\u65B9\u6CD5executor\uFF0C\u8BE5\u65B9\u6CD5\u63A5\u6536\u4E00\u4E2ARunable\u5B9E\u4F8B\u6267\u884C\u8FD9\u4E2A\u4EFB\u52A1\u3002</li><li>ExecutorService\uFF1AExecutor\u7684\u5B50\u7C7B\u63A5\u53E3\uFF0C\u5176\u5B9A\u4E49\u4E86\u4E00\u4E2A\u63A5\u6536Callable\u5BF9\u8C61\u7684\u65B9\u6CD5\uFF0C\u8FD4\u56DE Future \u5BF9\u8C61\uFF0C\u540C\u65F6\u63D0\u4F9Bexecute\u65B9\u6CD5\u3002</li><li>ScheduledExecutorService\uFF1AExecutorService\u7684\u5B50\u7C7B\u63A5\u53E3\uFF0C\u652F\u6301\u5B9A\u671F\u6267\u884C\u4EFB\u52A1\u3002</li><li>AbstractExecutorService\uFF1A\u62BD\u8C61\u7C7B\uFF0C\u63D0\u4F9B ExecutorService \u6267\u884C\u65B9\u6CD5\u7684\u9ED8\u8BA4\u5B9E\u73B0\u3002</li><li>Executors\uFF1A\u5B9E\u73B0ExecutorService\u63A5\u53E3\u7684\u9759\u6001\u5DE5\u5382\u7C7B\uFF0C\u63D0\u4F9B\u4E86\u4E00\u7CFB\u5217\u5DE5\u5382\u65B9\u6CD5\u7528\u4E8E\u521B\u5EFA\u7EBF\u7A0B\u6C60\u3002</li><li>ThreadPoolExecutor\uFF1A\u7EE7\u627FAbstractExecutorService\uFF0C\u7528\u4E8E\u521B\u5EFA\u7EBF\u7A0B\u6C60\u3002</li><li>ForkJoinPool: \u7EE7\u627FAbstractExecutorService\uFF0CFork \u5C06\u5927\u4EFB\u52A1\u5206\u53C9\u4E3A\u591A\u4E2A\u5C0F\u4EFB\u52A1\uFF0C\u7136\u540E\u8BA9\u5C0F\u4EFB\u52A1\u6267\u884C\uFF0CJoin \u662F\u83B7\u5F97\u5C0F\u4EFB\u52A1\u7684\u7ED3\u679C\uFF0C\u7C7B\u4F3C\u4E8Emap reduce\u3002</li><li>ThreadPoolExecutor\uFF1A\u7EE7\u627FThreadPoolExecutor\uFF0C\u5B9E\u73B0ScheduledExecutorService\uFF0C\u7528\u4E8E\u521B\u5EFA\u5E26\u5B9A\u65F6\u4EFB\u52A1\u7684\u7EBF\u7A0B\u6C60\u3002</li></ul><h3 id="\u7B80\u8FF0\u7EBF\u7A0B\u6C60\u7684\u72B6\u6001" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0\u7EBF\u7A0B\u6C60\u7684\u72B6\u6001" aria-hidden="true">#</a> \u7B80\u8FF0\u7EBF\u7A0B\u6C60\u7684\u72B6\u6001</h3><ul><li>Running\uFF1A\u80FD\u63A5\u53D7\u65B0\u63D0\u4EA4\u7684\u4EFB\u52A1\uFF0C\u4E5F\u53EF\u4EE5\u5904\u7406\u963B\u585E\u961F\u5217\u7684\u4EFB\u52A1\u3002</li><li>Shutdown\uFF1A\u4E0D\u518D\u63A5\u53D7\u65B0\u63D0\u4EA4\u7684\u4EFB\u52A1\uFF0C\u4F46\u53EF\u4EE5\u5904\u7406\u5B58\u91CF\u4EFB\u52A1\uFF0C\u7EBF\u7A0B\u6C60\u5904\u4E8Erunning\u65F6\u8C03\u7528shutdown\u65B9\u6CD5\uFF0C\u4F1A\u8FDB\u5165\u8BE5\u72B6\u6001\u3002</li><li>Stop\uFF1A\u4E0D\u63A5\u53D7\u65B0\u4EFB\u52A1\uFF0C\u4E0D\u5904\u7406\u5B58\u91CF\u4EFB\u52A1\uFF0C\u8C03\u7528shutdownnow\u8FDB\u5165\u8BE5\u72B6\u6001\u3002</li><li>Tidying\uFF1A\u6240\u6709\u4EFB\u52A1\u5DF2\u7ECF\u7EC8\u6B62\u4E86\uFF0Cworker_count\uFF08\u6709\u6548\u7EBF\u7A0B\u6570\uFF09\u4E3A0\u3002</li><li>Terminated\uFF1A\u7EBF\u7A0B\u6C60\u5F7B\u5E95\u7EC8\u6B62\u3002\u5728tidying\u6A21\u5F0F\u4E0B\u8C03\u7528terminated\u65B9\u6CD5\u4F1A\u8FDB\u5165\u8BE5\u72B6\u6001\u3002</li></ul><h3 id="\u7B80\u8FF0\u7EBF\u7A0B\u6C60\u7C7B\u578B" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0\u7EBF\u7A0B\u6C60\u7C7B\u578B" aria-hidden="true">#</a> \u7B80\u8FF0\u7EBF\u7A0B\u6C60\u7C7B\u578B</h3><ul><li>newCachedThreadPool \u53EF\u7F13\u5B58\u7EBF\u7A0B\u6C60\uFF0C\u53EF\u8BBE\u7F6E\u6700\u5C0F\u7EBF\u7A0B\u6570\u548C\u6700\u5927\u7EBF\u7A0B\u6570\uFF0C\u7EBF\u7A0B\u7A7A\u95F21\u5206\u949F\u540E\u81EA\u52A8\u9500\u6BC1\u3002</li><li>newFixedThreadPool \u6307\u5B9A\u5DE5\u4F5C\u7EBF\u7A0B\u6570\u91CF\u7EBF\u7A0B\u6C60\u3002</li><li>newSingleThreadExecutor \u5355\u7EBF\u7A0BExecutor\u3002</li><li>newScheduleThreadPool \u652F\u6301\u5B9A\u65F6\u4EFB\u52A1\u7684\u6307\u5B9A\u5DE5\u4F5C\u7EBF\u7A0B\u6570\u91CF\u7EBF\u7A0B\u6C60\u3002</li><li>newSingleThreadScheduledExecutor \u652F\u6301\u5B9A\u65F6\u4EFB\u52A1\u7684\u5355\u7EBF\u7A0BExecutor\u3002</li></ul><h3 id="\u7B80\u8FF0\u963B\u585E\u961F\u5217" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0\u963B\u585E\u961F\u5217" aria-hidden="true">#</a> \u7B80\u8FF0\u963B\u585E\u961F\u5217</h3><p>\u963B\u585E\u961F\u5217\u662F\u751F\u4EA7\u8005\u6D88\u8D39\u8005\u7684\u5B9E\u73B0\u5177\u4F53\u7EC4\u4EF6\u4E4B\u4E00\u3002\u5F53\u963B\u585E\u961F\u5217\u4E3A\u7A7A\u65F6\uFF0C\u4ECE\u961F\u5217\u4E2D\u83B7\u53D6\u5143\u7D20\u7684\u64CD\u4F5C\u5C06\u4F1A\u88AB\u963B\u585E\uFF0C\u5F53\u963B\u585E\u961F\u5217\u6EE1\u4E86\uFF0C\u5F80\u961F\u5217\u6DFB\u52A0\u5143\u7D20\u7684\u64CD\u4F5C\u5C06\u4F1A\u88AB\u963B\u585E\u3002\u5177\u4F53\u5B9E\u73B0\u6709\uFF1A</p><ul><li>ArrayBlockingQueue\uFF1A\u5E95\u5C42\u662F\u7531\u6570\u7EC4\u7EC4\u6210\u7684\u6709\u754C\u963B\u585E\u961F\u5217\u3002</li><li>LinkedBlockingQueue\uFF1A\u5E95\u5C42\u662F\u7531\u94FE\u8868\u7EC4\u6210\u7684\u6709\u754C\u963B\u585E\u961F\u5217\u3002</li><li>PriorityBlockingQueue\uFF1A\u963B\u585E\u4F18\u5148\u961F\u5217\u3002</li><li>DelayQueue\uFF1A\u521B\u5EFA\u5143\u7D20\u65F6\u53EF\u4EE5\u6307\u5B9A\u591A\u4E45\u624D\u80FD\u4ECE\u961F\u5217\u4E2D\u83B7\u53D6\u5F53\u524D\u5143\u7D20</li><li>SynchronousQueue\uFF1A\u4E0D\u5B58\u50A8\u5143\u7D20\u7684\u963B\u585E\u961F\u5217\uFF0C\u6BCF\u4E00\u4E2A\u5B58\u50A8\u5FC5\u987B\u7B49\u5F85\u4E00\u4E2A\u53D6\u51FA\u64CD\u4F5C</li><li>LinkedTransferQueue\uFF1A\u4E0ELinkedBlockingQueue\u76F8\u6BD4\u591A\u4E00\u4E2Atransfer\u65B9\u6CD5\uFF0C\u5373\u5982\u679C\u5F53\u524D\u6709\u6D88\u8D39\u8005\u6B63\u7B49\u5F85\u63A5\u6536\u5143\u7D20\uFF0C\u53EF\u4EE5\u628A\u751F\u4EA7\u8005\u4F20\u5165\u7684\u5143\u7D20\u7ACB\u523B\u4F20\u8F93\u7ED9\u6D88\u8D39\u8005\u3002</li><li>LinkedBlockingDeque\uFF1A\u53CC\u5411\u963B\u585E\u961F\u5217\u3002</li></ul><h3 id="\u8C08\u4E00\u8C08threadlocal" tabindex="-1"><a class="header-anchor" href="#\u8C08\u4E00\u8C08threadlocal" aria-hidden="true">#</a> \u8C08\u4E00\u8C08ThreadLocal</h3><p>ThreadLocal \u662F\u7EBF\u7A0B\u5171\u4EAB\u53D8\u91CF\u3002ThreadLoacl \u6709\u4E00\u4E2A\u9759\u6001\u5185\u90E8\u7C7B ThreadLocalMap\uFF0C\u5176 Key \u662F ThreadLocal \u5BF9\u8C61\uFF0C\u503C\u662F Entry \u5BF9\u8C61\uFF0CThreadLocalMap\u662F\u6BCF\u4E2A\u7EBF\u7A0B\u79C1\u6709\u7684\u3002</p><ul><li>set \u7ED9ThreadLocalMap\u8BBE\u7F6E\u503C\u3002</li><li>get \u83B7\u53D6ThreadLocalMap\u3002</li><li>remove \u5220\u9664ThreadLocalMap\u7C7B\u578B\u7684\u5BF9\u8C61\u3002</li></ul><p>\u5B58\u5728\u7684\u95EE\u9898\uFF1A\u5BF9\u4E8E\u7EBF\u7A0B\u6C60\uFF0C\u7531\u4E8E\u7EBF\u7A0B\u6C60\u4F1A\u91CD\u7528 Thread \u5BF9\u8C61\uFF0C\u56E0\u6B64\u4E0E Thread \u7ED1\u5B9A\u7684 ThreadLocal \u4E5F\u4F1A\u88AB\u91CD\u7528\uFF0C\u9020\u6210\u4E00\u7CFB\u5217\u95EE\u9898\u3002</p><p>\u6BD4\u5982\u8BF4\u5185\u5B58\u6CC4\u6F0F\u3002\u7531\u4E8E ThreadLocal \u662F\u5F31\u5F15\u7528\uFF0C\u4F46 Entry \u7684 value \u662F\u5F3A\u5F15\u7528\uFF0C\u56E0\u6B64\u5F53 ThreadLocal \u88AB\u5783\u573E\u56DE\u6536\u540E\uFF0Cvalue \u4F9D\u65E7\u4E0D\u4F1A\u88AB\u91CA\u653E\uFF0C\u4EA7\u751F\u5185\u5B58\u6CC4\u6F0F\u3002</p><h3 id="\u804A\u804A\u4F60\u5BF9java\u5E76\u53D1\u5305\u4E0Bunsafe\u7C7B\u7684\u7406\u89E3" tabindex="-1"><a class="header-anchor" href="#\u804A\u804A\u4F60\u5BF9java\u5E76\u53D1\u5305\u4E0Bunsafe\u7C7B\u7684\u7406\u89E3" aria-hidden="true">#</a> \u804A\u804A\u4F60\u5BF9Java\u5E76\u53D1\u5305\u4E0Bunsafe\u7C7B\u7684\u7406\u89E3</h3><p>\u5BF9\u4E8E Java \u8BED\u8A00\uFF0C\u6CA1\u6709\u76F4\u63A5\u7684\u6307\u9488\u7EC4\u4EF6\uFF0C\u4E00\u822C\u4E5F\u4E0D\u80FD\u4F7F\u7528\u504F\u79FB\u91CF\u5BF9\u67D0\u5757\u5185\u5B58\u8FDB\u884C\u64CD\u4F5C\u3002\u8FD9\u4E9B\u64CD\u4F5C\u76F8\u5BF9\u6765\u8BB2\u662F\u5B89\u5168\uFF08safe\uFF09\u7684\u3002</p><p>Java \u6709\u4E2A\u7C7B\u53EB Unsafe \u7C7B\uFF0C\u8FD9\u4E2A\u7C7B\u4F7F Java \u62E5\u6709\u4E86\u50CF C \u8BED\u8A00\u7684\u6307\u9488\u4E00\u6837\u64CD\u4F5C\u5185\u5B58\u7A7A\u95F4\u7684\u80FD\u529B\uFF0C\u540C\u65F6\u4E5F\u5E26\u6765\u4E86\u6307\u9488\u7684\u95EE\u9898\u3002\u8FD9\u4E2A\u7C7B\u53EF\u4EE5\u8BF4\u662F Java \u5E76\u53D1\u5F00\u53D1\u7684\u57FA\u7840\u3002</p><h3 id="java\u4E2D\u7684\u4E50\u89C2\u9501\u4E0Ecas\u7B97\u6CD5" tabindex="-1"><a class="header-anchor" href="#java\u4E2D\u7684\u4E50\u89C2\u9501\u4E0Ecas\u7B97\u6CD5" aria-hidden="true">#</a> Java\u4E2D\u7684\u4E50\u89C2\u9501\u4E0ECAS\u7B97\u6CD5</h3><p>\u4E50\u89C2\u9501\u8BA4\u4E3A\u6570\u636E\u53D1\u9001\u65F6\u53D1\u751F\u5E76\u53D1\u51B2\u7A81\u7684\u6982\u7387\u4E0D\u5927\uFF0C\u6240\u4EE5\u8BFB\u64CD\u4F5C\u524D\u4E0D\u4E0A\u9501\u3002</p><p>\u5230\u4E86\u5199\u64CD\u4F5C\u65F6\u624D\u4F1A\u8FDB\u884C\u5224\u65AD\uFF0C\u6570\u636E\u5728\u6B64\u671F\u95F4\u662F\u5426\u88AB\u5176\u4ED6\u7EBF\u7A0B\u4FEE\u6539\u3002\u5982\u679C\u53D1\u751F\u4FEE\u6539\uFF0C\u90A3\u5C31\u8FD4\u56DE\u5199\u5165\u5931\u8D25\uFF1B\u5982\u679C\u6CA1\u6709\u88AB\u4FEE\u6539\uFF0C\u90A3\u5C31\u6267\u884C\u4FEE\u6539\u64CD\u4F5C\uFF0C\u8FD4\u56DE\u4FEE\u6539\u6210\u529F\u3002</p><p>\u4E50\u89C2\u9501\u4E00\u822C\u90FD\u91C7\u7528 Compare And Swap\uFF08CAS\uFF09\u7B97\u6CD5\u8FDB\u884C\u5B9E\u73B0\u3002\u987E\u540D\u601D\u4E49\uFF0C\u8BE5\u7B97\u6CD5\u6D89\u53CA\u5230\u4E86\u4E24\u4E2A\u64CD\u4F5C\uFF0C\u6BD4\u8F83\uFF08Compare\uFF09\u548C\u4EA4\u6362\uFF08Swap\uFF09\u3002</p><p>CAS \u7B97\u6CD5\u7684\u601D\u8DEF\u5982\u4E0B\uFF1A</p><ul><li>\u8BE5\u7B97\u6CD5\u8BA4\u4E3A\u4E0D\u540C\u7EBF\u7A0B\u5BF9\u53D8\u91CF\u7684\u64CD\u4F5C\u65F6\u4EA7\u751F\u7ADE\u4E89\u7684\u60C5\u51B5\u6BD4\u8F83\u5C11\u3002</li><li>\u8BE5\u7B97\u6CD5\u7684\u6838\u5FC3\u662F\u5BF9\u5F53\u524D\u8BFB\u53D6\u53D8\u91CF\u503C E \u548C\u5185\u5B58\u4E2D\u7684\u53D8\u91CF\u65E7\u503C V \u8FDB\u884C\u6BD4\u8F83\u3002</li><li>\u5982\u679C\u76F8\u7B49\uFF0C\u5C31\u4EE3\u8868\u5176\u4ED6\u7EBF\u7A0B\u6CA1\u6709\u5BF9\u8BE5\u53D8\u91CF\u8FDB\u884C\u4FEE\u6539\uFF0C\u5C31\u5C06\u53D8\u91CF\u503C\u66F4\u65B0\u4E3A\u65B0\u503C N\u3002</li><li>\u5982\u679C\u4E0D\u7B49\uFF0C\u5C31\u8BA4\u4E3A\u5728\u8BFB\u53D6\u503C E \u5230\u6BD4\u8F83\u9636\u6BB5\uFF0C\u6709\u5176\u4ED6\u7EBF\u7A0B\u5BF9\u53D8\u91CF\u8FDB\u884C\u8FC7\u4FEE\u6539\uFF0C\u4E0D\u8FDB\u884C\u4EFB\u4F55\u64CD\u4F5C\u3002</li></ul><h3 id="aba\u95EE\u9898\u53CA\u89E3\u51B3\u65B9\u6CD5\u7B80\u8FF0" tabindex="-1"><a class="header-anchor" href="#aba\u95EE\u9898\u53CA\u89E3\u51B3\u65B9\u6CD5\u7B80\u8FF0" aria-hidden="true">#</a> ABA\u95EE\u9898\u53CA\u89E3\u51B3\u65B9\u6CD5\u7B80\u8FF0</h3><p>CAS \u7B97\u6CD5\u662F\u57FA\u4E8E\u503C\u6765\u505A\u6BD4\u8F83\u7684\uFF0C\u5982\u679C\u5F53\u524D\u6709\u4E24\u4E2A\u7EBF\u7A0B\uFF0C\u4E00\u4E2A\u7EBF\u7A0B\u5C06\u53D8\u91CF\u503C\u4ECE A \u6539\u4E3A B \uFF0C\u518D\u7531 B \u6539\u56DE\u4E3A A \uFF0C\u5F53\u524D\u7EBF\u7A0B\u5F00\u59CB\u6267\u884C CAS \u7B97\u6CD5\u65F6\uFF0C\u5C31\u5F88\u5BB9\u6613\u8BA4\u4E3A\u503C\u6CA1\u6709\u53D8\u5316\uFF0C\u8BEF\u8BA4\u4E3A\u8BFB\u53D6\u6570\u636E\u5230\u6267\u884C CAS \u7B97\u6CD5\u7684\u671F\u95F4\uFF0C\u6CA1\u6709\u7EBF\u7A0B\u4FEE\u6539\u8FC7\u6570\u636E\u3002</p><p>juc \u5305\u63D0\u4F9B\u4E86\u4E00\u4E2A AtomicStampedReference\uFF0C\u5373\u5728\u539F\u59CB\u7684\u7248\u672C\u4E0B\u52A0\u5165\u7248\u672C\u53F7\u6233\uFF0C\u89E3\u51B3 ABA \u95EE\u9898\u3002</p><h3 id="\u7B80\u8FF0\u5E38\u89C1\u7684atomic\u7C7B" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0\u5E38\u89C1\u7684atomic\u7C7B" aria-hidden="true">#</a> \u7B80\u8FF0\u5E38\u89C1\u7684Atomic\u7C7B</h3><p>\u5728\u5F88\u591A\u65F6\u5019\uFF0C\u6211\u4EEC\u9700\u8981\u7684\u4EC5\u4EC5\u662F\u4E00\u4E2A\u7B80\u5355\u7684\u3001\u9AD8\u6548\u7684\u3001\u7EBF\u7A0B\u5B89\u5168\u7684++\u6216\u8005--\u65B9\u6848\uFF0C\u4F7F\u7528synchronized\u5173\u952E\u5B57\u548Clock\u56FA\u7136\u53EF\u4EE5\u5B9E\u73B0\uFF0C\u4F46\u4EE3\u4EF7\u6BD4\u8F83\u5927\uFF0C\u6B64\u65F6\u7528\u539F\u5B50\u7C7B\u66F4\u52A0\u65B9\u4FBF\u3002\u57FA\u672C\u6570\u636E\u7C7B\u578B\u7684\u539F\u5B50\u7C7B\u6709\uFF1A</p><ul><li>AtomicInteger \u539F\u5B50\u66F4\u65B0\u6574\u578B</li><li>AtomicLong \u539F\u5B50\u66F4\u65B0\u957F\u6574\u578B</li><li>AtomicBoolean \u539F\u5B50\u66F4\u65B0\u5E03\u5C14\u7C7B\u578B</li></ul><p>Atomic\u6570\u7EC4\u7C7B\u578B\u6709\uFF1A</p><ul><li>AtomicIntegerArray \u539F\u5B50\u66F4\u65B0\u6574\u578B\u6570\u7EC4\u91CC\u7684\u5143\u7D20</li><li>AtomicLongArray \u539F\u5B50\u66F4\u65B0\u957F\u6574\u578B\u6570\u7EC4\u91CC\u7684\u5143\u7D20</li><li>AtomicReferenceArray \u539F\u5B50\u66F4\u65B0\u5F15\u7528\u7C7B\u578B\u6570\u7EC4\u91CC\u7684\u5143\u7D20\u3002</li></ul><p>Atomic\u5F15\u7528\u7C7B\u578B\u6709\uFF1A</p><ul><li>AtomicReference \u539F\u5B50\u66F4\u65B0\u5F15\u7528\u7C7B\u578B</li><li>AtomicMarkableReference \u539F\u5B50\u66F4\u65B0\u5E26\u6709\u6807\u8BB0\u4F4D\u7684\u5F15\u7528\u7C7B\u578B\uFF0C\u53EF\u4EE5\u7ED1\u5B9A\u4E00\u4E2A boolean \u6807\u8BB0</li><li>AtomicStampedReference \u539F\u5B50\u66F4\u65B0\u5E26\u6709\u7248\u672C\u53F7\u7684\u5F15\u7528\u7C7B\u578B</li></ul><p>FieldUpdater\u7C7B\u578B\uFF1A</p><ul><li>AtomicIntegerFieldUpdater \u539F\u5B50\u66F4\u65B0\u6574\u578B\u5B57\u6BB5\u7684\u66F4\u65B0\u5668</li><li>AtomicLongFieldUpdater \u539F\u5B50\u66F4\u65B0\u957F\u6574\u578B\u5B57\u6BB5\u7684\u66F4\u65B0\u5668</li><li>AtomicReferenceFieldUpdater \u539F\u5B50\u66F4\u65B0\u5F15\u7528\u7C7B\u578B\u5B57\u6BB5\u7684\u66F4\u65B0\u5668</li></ul><h3 id="\u7B80\u8FF0atomic\u7C7B\u57FA\u672C\u5B9E\u73B0\u539F\u7406" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0atomic\u7C7B\u57FA\u672C\u5B9E\u73B0\u539F\u7406" aria-hidden="true">#</a> \u7B80\u8FF0Atomic\u7C7B\u57FA\u672C\u5B9E\u73B0\u539F\u7406</h3><p>\u4EE5AtomicIntger \u4E3A\u4F8B\u3002</p><p>\u65B9\u6CD5getAndIncrement\uFF0C\u4EE5\u539F\u5B50\u65B9\u5F0F\u5C06\u5F53\u524D\u7684\u503C\u52A01\uFF0C\u5177\u4F53\u5B9E\u73B0\u4E3A\uFF1A</p><ul><li>\u5728 for \u6B7B\u5FAA\u73AF\u4E2D\u53D6\u5F97 AtomicInteger \u91CC\u5B58\u50A8\u7684\u6570\u503C</li><li>\u5BF9 AtomicInteger \u5F53\u524D\u7684\u503C\u52A0 1</li><li>\u8C03\u7528 compareAndSet \u65B9\u6CD5\u8FDB\u884C\u539F\u5B50\u66F4\u65B0</li><li>\u5148\u68C0\u67E5\u5F53\u524D\u6570\u503C\u662F\u5426\u7B49\u4E8E expect</li><li>\u5982\u679C\u7B49\u4E8E\u5219\u8BF4\u660E\u5F53\u524D\u503C\u6CA1\u6709\u88AB\u5176\u4ED6\u7EBF\u7A0B\u4FEE\u6539\uFF0C\u5219\u5C06\u503C\u66F4\u65B0\u4E3A next\uFF0C</li><li>\u5982\u679C\u4E0D\u662F\u4F1A\u66F4\u65B0\u5931\u8D25\u8FD4\u56DE false\uFF0C\u7A0B\u5E8F\u4F1A\u8FDB\u5165 for \u5FAA\u73AF\u91CD\u65B0\u8FDB\u884C compareAndSet \u64CD\u4F5C\u3002</li></ul><h3 id="\u7B80\u8FF0countdownlatch" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0countdownlatch" aria-hidden="true">#</a> \u7B80\u8FF0CountDownLatch</h3><p>CountDownLatch\u8FD9\u4E2A\u7C7B\u4F7F\u4E00\u4E2A\u7EBF\u7A0B\u7B49\u5F85\u5176\u4ED6\u7EBF\u7A0B\u5404\u81EA\u6267\u884C\u5B8C\u6BD5\u540E\u518D\u6267\u884C\u3002\u662F\u901A\u8FC7\u4E00\u4E2A\u8BA1\u6570\u5668\u6765\u5B9E\u73B0\u7684\uFF0C\u8BA1\u6570\u5668\u7684\u521D\u59CB\u503C\u662F\u7EBF\u7A0B\u7684\u6570\u91CF\u3002\u6BCF\u5F53\u4E00\u4E2A\u7EBF\u7A0B\u6267\u884C\u5B8C\u6BD5\u540E\uFF0C\u8C03\u7528countDown\u65B9\u6CD5\uFF0C\u8BA1\u6570\u5668\u7684\u503C\u5C31\u51CF1\uFF0C\u5F53\u8BA1\u6570\u5668\u7684\u503C\u4E3A0\u65F6\uFF0C\u8868\u793A\u6240\u6709\u7EBF\u7A0B\u90FD\u6267\u884C\u5B8C\u6BD5\uFF0C\u7136\u540E\u5728\u7B49\u5F85\u7684\u7EBF\u7A0B\u5C31\u53EF\u4EE5\u6062\u590D\u5DE5\u4F5C\u4E86\u3002\u53EA\u80FD\u4E00\u6B21\u6027\u4F7F\u7528\uFF0C\u4E0D\u80FDreset\u3002</p><h3 id="\u7B80\u8FF0cyclicbarrier" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0cyclicbarrier" aria-hidden="true">#</a> \u7B80\u8FF0CyclicBarrier</h3><p>CyclicBarrier \u4E3B\u8981\u529F\u80FD\u548CCountDownLatch\u7C7B\u4F3C\uFF0C\u4E5F\u662F\u901A\u8FC7\u4E00\u4E2A\u8BA1\u6570\u5668\uFF0C\u4F7F\u4E00\u4E2A\u7EBF\u7A0B\u7B49\u5F85\u5176\u4ED6\u7EBF\u7A0B\u5404\u81EA\u6267\u884C\u5B8C\u6BD5\u540E\u518D\u6267\u884C\u3002\u4F46\u662F\u5176\u53EF\u4EE5\u91CD\u590D\u4F7F\u7528\uFF08reset\uFF09\u3002</p><h3 id="\u7B80\u8FF0semaphore" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0semaphore" aria-hidden="true">#</a> \u7B80\u8FF0Semaphore</h3><p>Semaphore\u5373\u4FE1\u53F7\u91CF\u3002Semaphore \u7684\u6784\u9020\u65B9\u6CD5\u53C2\u6570\u63A5\u6536\u4E00\u4E2A int \u503C\uFF0C\u8BBE\u7F6E\u4E00\u4E2A\u8BA1\u6570\u5668\uFF0C\u8868\u793A\u53EF\u7528\u7684\u8BB8\u53EF\u6570\u91CF\u5373\u6700\u5927\u5E76\u53D1\u6570\u3002\u4F7F\u7528 acquire \u65B9\u6CD5\u83B7\u5F97\u4E00\u4E2A\u8BB8\u53EF\u8BC1\uFF0C\u8BA1\u6570\u5668\u51CF\u4E00\uFF0C\u4F7F\u7528 release \u65B9\u6CD5\u5F52\u8FD8\u8BB8\u53EF\uFF0C\u8BA1\u6570\u5668\u52A0\u4E00\u3002\u5982\u679C\u6B64\u65F6\u8BA1\u6570\u5668\u503C\u4E3A0\uFF0C\u7EBF\u7A0B\u8FDB\u5165\u4F11\u7720\u3002</p><h3 id="\u7B80\u8FF0exchanger" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0exchanger" aria-hidden="true">#</a> \u7B80\u8FF0Exchanger</h3><p>Exchanger\u7C7B\u53EF\u7528\u4E8E\u4E24\u4E2A\u7EBF\u7A0B\u4E4B\u95F4\u4EA4\u6362\u4FE1\u606F\u3002\u53EF\u7B80\u5355\u5730\u5C06Exchanger\u5BF9\u8C61\u7406\u89E3\u4E3A\u4E00\u4E2A\u5305\u542B\u4E24\u4E2A\u683C\u5B50\u7684\u5BB9\u5668\uFF0C\u901A\u8FC7exchanger\u65B9\u6CD5\u53EF\u4EE5\u5411\u4E24\u4E2A\u683C\u5B50\u4E2D\u586B\u5145\u4FE1\u606F\u3002\u7EBF\u7A0B\u901A\u8FC7exchange \u65B9\u6CD5\u4EA4\u6362\u6570\u636E\uFF0C\u7B2C\u4E00\u4E2A\u7EBF\u7A0B\u6267\u884C exchange \u65B9\u6CD5\u540E\u4F1A\u963B\u585E\u7B49\u5F85\u7B2C\u4E8C\u4E2A\u7EBF\u7A0B\u6267\u884C\u8BE5\u65B9\u6CD5\u3002\u5F53\u4E24\u4E2A\u7EBF\u7A0B\u90FD\u5230\u8FBE\u540C\u6B65\u70B9\u65F6\u8FD9\u4E24\u4E2A\u7EBF\u7A0B\u5C31\u53EF\u4EE5\u4EA4\u6362\u6570\u636E\u5F53\u4E24\u4E2A\u683C\u5B50\u4E2D\u7684\u5747\u88AB\u586B\u5145\u65F6\uFF0C\u8BE5\u5BF9\u8C61\u4F1A\u81EA\u52A8\u5C06\u4E24\u4E2A\u683C\u5B50\u7684\u4FE1\u606F\u4EA4\u6362\uFF0C\u7136\u540E\u8FD4\u56DE\u7ED9\u7EBF\u7A0B\uFF0C\u4ECE\u800C\u5B9E\u73B0\u4E24\u4E2A\u7EBF\u7A0B\u7684\u4FE1\u606F\u4EA4\u6362\u3002</p><h3 id="\u7B80\u8FF0concurrenthashmap" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0concurrenthashmap" aria-hidden="true">#</a> \u7B80\u8FF0ConcurrentHashMap</h3><p>JDK7\u91C7\u7528\u9501\u5206\u6BB5\u6280\u672F\u3002\u9996\u5148\u5C06\u6570\u636E\u5206\u6210 Segment \u6570\u636E\u6BB5\uFF0C\u7136\u540E\u7ED9\u6BCF\u4E00\u4E2A\u6570\u636E\u6BB5\u914D\u4E00\u628A\u9501\uFF0C\u5F53\u4E00\u4E2A\u7EBF\u7A0B\u5360\u7528\u9501\u8BBF\u95EE\u5176\u4E2D\u4E00\u4E2A\u6BB5\u7684\u6570\u636E\u65F6\uFF0C\u5176\u4ED6\u6BB5\u7684\u6570\u636E\u4E5F\u80FD\u88AB\u5176\u4ED6\u7EBF\u7A0B\u8BBF\u95EE\u3002</p><p>get \u9664\u8BFB\u5230\u7A7A\u503C\u4E0D\u9700\u8981\u52A0\u9501\u3002\u8BE5\u65B9\u6CD5\u5148\u7ECF\u8FC7\u4E00\u6B21\u518D\u6563\u5217\uFF0C\u518D\u7528\u8FD9\u4E2A\u6563\u5217\u503C\u901A\u8FC7\u6563\u5217\u8FD0\u7B97\u5B9A\u4F4D\u5230 Segment\uFF0C\u6700\u540E\u901A\u8FC7\u6563\u5217\u7B97\u6CD5\u5B9A\u4F4D\u5230\u5143\u7D20\u3002put \u987B\u52A0\u9501\uFF0C\u9996\u5148\u5B9A\u4F4D\u5230 Segment\uFF0C\u7136\u540E\u8FDB\u884C\u63D2\u5165\u64CD\u4F5C\uFF0C\u7B2C\u4E00\u6B65\u5224\u65AD\u662F\u5426\u9700\u8981\u5BF9 Segment \u91CC\u7684 HashEntry \u6570\u7EC4\u8FDB\u884C\u6269\u5BB9\uFF0C\u7B2C\u4E8C\u6B65\u5B9A\u4F4D\u6DFB\u52A0\u5143\u7D20\u7684\u4F4D\u7F6E\uFF0C\u7136\u540E\u5C06\u5176\u653E\u5165\u6570\u7EC4\u3002</p><p>JDK8\u7684\u6539\u8FDB</p><ul><li>\u53D6\u6D88\u5206\u6BB5\u9501\u673A\u5236\uFF0C\u91C7\u7528CAS\u7B97\u6CD5\u8FDB\u884C\u503C\u7684\u8BBE\u7F6E\uFF0C\u5982\u679CCAS\u5931\u8D25\u518D\u4F7F\u7528 synchronized \u52A0\u9501\u6DFB\u52A0\u5143\u7D20</li><li>\u5F15\u5165\u7EA2\u9ED1\u6811\u7ED3\u6784\uFF0C\u5F53\u67D0\u4E2A\u69FD\u5185\u7684\u5143\u7D20\u4E2A\u6570\u8D85\u8FC78\u4E14 Node\u6570\u7EC4 \u5BB9\u91CF\u5927\u4E8E 64 \u65F6\uFF0C\u94FE\u8868\u8F6C\u4E3A\u7EA2\u9ED1\u6811\u3002</li><li>\u4F7F\u7528\u4E86\u66F4\u52A0\u4F18\u5316\u7684\u65B9\u5F0F\u7EDF\u8BA1\u96C6\u5408\u5185\u7684\u5143\u7D20\u6570\u91CF\u3002</li></ul><h3 id="synchronized\u5E95\u5C42\u5B9E\u73B0\u539F\u7406" tabindex="-1"><a class="header-anchor" href="#synchronized\u5E95\u5C42\u5B9E\u73B0\u539F\u7406" aria-hidden="true">#</a> synchronized\u5E95\u5C42\u5B9E\u73B0\u539F\u7406</h3><p>Java \u5BF9\u8C61\u5E95\u5C42\u90FD\u4F1A\u5173\u8054\u4E00\u4E2A monitor\uFF0C\u4F7F\u7528 synchronized \u65F6 JVM \u4F1A\u6839\u636E\u4F7F\u7528\u73AF\u5883\u627E\u5230\u5BF9\u8C61\u7684 monitor\uFF0C\u6839\u636E monitor \u7684\u72B6\u6001\u8FDB\u884C\u52A0\u89E3\u9501\u7684\u5224\u65AD\u3002\u5982\u679C\u6210\u529F\u52A0\u9501\u5C31\u6210\u4E3A\u8BE5 monitor \u7684\u552F\u4E00\u6301\u6709\u8005\uFF0Cmonitor \u5728\u88AB\u91CA\u653E\u524D\u4E0D\u80FD\u518D\u88AB\u5176\u4ED6\u7EBF\u7A0B\u83B7\u53D6\u3002</p><p>synchronized\u5728JVM\u7F16\u8BD1\u540E\u4F1A\u4EA7\u751Fmonitorenter \u548C monitorexit \u8FD9\u4E24\u4E2A\u5B57\u8282\u7801\u6307\u4EE4\uFF0C\u83B7\u53D6\u548C\u91CA\u653E monitor\u3002\u8FD9\u4E24\u4E2A\u5B57\u8282\u7801\u6307\u4EE4\u90FD\u9700\u8981\u4E00\u4E2A\u5F15\u7528\u7C7B\u578B\u7684\u53C2\u6570\u6307\u660E\u8981\u9501\u5B9A\u548C\u89E3\u9501\u7684\u5BF9\u8C61\uFF0C\u5BF9\u4E8E\u540C\u6B65\u666E\u901A\u65B9\u6CD5\uFF0C\u9501\u662F\u5F53\u524D\u5B9E\u4F8B\u5BF9\u8C61\uFF1B\u5BF9\u4E8E\u9759\u6001\u540C\u6B65\u65B9\u6CD5\uFF0C\u9501\u662F\u5F53\u524D\u7C7B\u7684 Class \u5BF9\u8C61\uFF1B\u5BF9\u4E8E\u540C\u6B65\u65B9\u6CD5\u5757\uFF0C\u9501\u662F synchronized \u62EC\u53F7\u91CC\u7684\u5BF9\u8C61\u3002</p><p>\u6267\u884C monitorenter \u6307\u4EE4\u65F6\uFF0C\u9996\u5148\u5C1D\u8BD5\u83B7\u53D6\u5BF9\u8C61\u9501\u3002\u5982\u679C\u8FD9\u4E2A\u5BF9\u8C61\u6CA1\u6709\u88AB\u9501\u5B9A\uFF0C\u6216\u5F53\u524D\u7EBF\u7A0B\u5DF2\u7ECF\u6301\u6709\u9501\uFF0C\u5C31\u628A\u9501\u7684\u8BA1\u6570\u5668\u52A0 1\uFF0C\u6267\u884C monitorexit \u6307\u4EE4\u65F6\u4F1A\u5C06\u9501\u8BA1\u6570\u5668\u51CF 1\u3002\u4E00\u65E6\u8BA1\u6570\u5668\u4E3A 0 \u9501\u968F\u5373\u5C31\u88AB\u91CA\u653E\u3002</p><h3 id="synchronized\u5173\u952E\u8BCD\u4F7F\u7528\u65B9\u6CD5" tabindex="-1"><a class="header-anchor" href="#synchronized\u5173\u952E\u8BCD\u4F7F\u7528\u65B9\u6CD5" aria-hidden="true">#</a> synchronized\u5173\u952E\u8BCD\u4F7F\u7528\u65B9\u6CD5</h3><ul><li>\u76F4\u63A5\u4FEE\u9970\u67D0\u4E2A\u5B9E\u4F8B\u65B9\u6CD5</li><li>\u76F4\u63A5\u4FEE\u9970\u67D0\u4E2A\u9759\u6001\u65B9\u6CD5</li><li>\u4FEE\u9970\u4EE3\u7801\u5757</li></ul><h3 id="\u7B80\u8FF0java\u504F\u5411\u9501" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0java\u504F\u5411\u9501" aria-hidden="true">#</a> \u7B80\u8FF0Java\u504F\u5411\u9501</h3><p>JDK 1.6 \u4E2D\u63D0\u51FA\u4E86\u504F\u5411\u9501\u7684\u6982\u5FF5\u3002\u8BE5\u9501\u63D0\u51FA\u7684\u539F\u56E0\u662F\uFF0C\u5F00\u53D1\u8005\u53D1\u73B0\u591A\u6570\u60C5\u51B5\u4E0B\u9501\u5E76\u4E0D\u5B58\u5728\u7ADE\u4E89\uFF0C\u4E00\u628A\u9501\u5F80\u5F80\u662F\u7531\u540C\u4E00\u4E2A\u7EBF\u7A0B\u83B7\u5F97\u7684\u3002\u504F\u5411\u9501\u5E76\u4E0D\u4F1A\u4E3B\u52A8\u91CA\u653E\uFF0C\u8FD9\u6837\u6BCF\u6B21\u504F\u5411\u9501\u8FDB\u5165\u7684\u65F6\u5019\u90FD\u4F1A\u5224\u65AD\u8BE5\u8D44\u6E90\u662F\u5426\u662F\u504F\u5411\u81EA\u5DF1\u7684\uFF0C\u5982\u679C\u662F\u504F\u5411\u81EA\u5DF1\u7684\u5219\u4E0D\u9700\u8981\u8FDB\u884C\u989D\u5916\u7684\u64CD\u4F5C\uFF0C\u76F4\u63A5\u53EF\u4EE5\u8FDB\u5165\u540C\u6B65\u64CD\u4F5C\u3002</p><p>\u5176\u7533\u8BF7\u6D41\u7A0B\u4E3A\uFF1A</p><ul><li>\u9996\u5148\u9700\u8981\u5224\u65AD\u5BF9\u8C61\u7684 Mark Word \u662F\u5426\u5C5E\u4E8E\u504F\u5411\u6A21\u5F0F\uFF0C\u5982\u679C\u4E0D\u5C5E\u4E8E\uFF0C\u90A3\u5C31\u8FDB\u5165\u8F7B\u91CF\u7EA7\u9501\u5224\u65AD\u903B\u8F91\u3002\u5426\u5219\u7EE7\u7EED\u4E0B\u4E00\u6B65\u5224\u65AD\uFF1B</li><li>\u5224\u65AD\u76EE\u524D\u8BF7\u6C42\u9501\u7684\u7EBF\u7A0B ID \u662F\u5426\u548C\u504F\u5411\u9501\u672C\u8EAB\u8BB0\u5F55\u7684\u7EBF\u7A0B ID \u4E00\u81F4\u3002\u5982\u679C\u4E00\u81F4\uFF0C\u7EE7\u7EED\u4E0B\u4E00\u6B65\u7684\u5224\u65AD\uFF0C\u5982\u679C\u4E0D\u4E00\u81F4\uFF0C\u8DF3\u8F6C\u5230\u6B65\u9AA44\uFF1B</li><li>\u5224\u65AD\u662F\u5426\u9700\u8981\u91CD\u504F\u5411\u3002\u5982\u679C\u4E0D\u7528\u7684\u8BDD\uFF0C\u76F4\u63A5\u83B7\u5F97\u504F\u5411\u9501\uFF1B</li><li>\u5229\u7528 CAS \u7B97\u6CD5\u5C06\u5BF9\u8C61\u7684 Mark Word \u8FDB\u884C\u66F4\u6539\uFF0C\u4F7F\u7EBF\u7A0B ID \u90E8\u5206\u6362\u6210\u672C\u7EBF\u7A0B ID\u3002\u5982\u679C\u66F4\u6362\u6210\u529F\uFF0C\u5219\u91CD\u504F\u5411\u5B8C\u6210\uFF0C\u83B7\u5F97\u504F\u5411\u9501\u3002\u5982\u679C\u5931\u8D25\uFF0C\u5219\u8BF4\u660E\u6709\u591A\u7EBF\u7A0B\u7ADE\u4E89\uFF0C\u5347\u7EA7\u4E3A\u8F7B\u91CF\u7EA7\u9501\u3002</li></ul><h3 id="\u7B80\u8FF0\u8F7B\u91CF\u7EA7\u9501" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0\u8F7B\u91CF\u7EA7\u9501" aria-hidden="true">#</a> \u7B80\u8FF0\u8F7B\u91CF\u7EA7\u9501</h3><p>\u8F7B\u91CF\u7EA7\u9501\u662F\u4E3A\u4E86\u5728\u6CA1\u6709\u7ADE\u4E89\u7684\u524D\u63D0\u4E0B\u51CF\u5C11\u91CD\u91CF\u7EA7\u9501\u51FA\u73B0\u5E76\u5BFC\u81F4\u7684\u6027\u80FD\u6D88\u8017\u3002</p><p>\u5176\u7533\u8BF7\u6D41\u7A0B\u4E3A\uFF1A</p><ul><li>\u5982\u679C\u540C\u6B65\u5BF9\u8C61\u6CA1\u6709\u88AB\u9501\u5B9A\uFF0C\u865A\u62DF\u673A\u5C06\u5728\u5F53\u524D\u7EBF\u7A0B\u7684\u6808\u5E27\u4E2D\u5EFA\u7ACB\u4E00\u4E2A\u9501\u8BB0\u5F55\u7A7A\u95F4\uFF0C\u5B58\u50A8\u9501\u5BF9\u8C61\u76EE\u524D Mark Word \u7684\u62F7\u8D1D\u3002</li><li>\u865A\u62DF\u673A\u4F7F\u7528 CAS \u5C1D\u8BD5\u628A\u5BF9\u8C61\u7684 Mark Word \u66F4\u65B0\u4E3A\u6307\u5411\u9501\u8BB0\u5F55\u7684\u6307\u9488</li><li>\u5982\u679C\u66F4\u65B0\u6210\u529F\u5373\u4EE3\u8868\u8BE5\u7EBF\u7A0B\u62E5\u6709\u4E86\u9501\uFF0C\u9501\u6807\u5FD7\u4F4D\u5C06\u8F6C\u53D8\u4E3A 00\uFF0C\u8868\u793A\u5904\u4E8E\u8F7B\u91CF\u7EA7\u9501\u5B9A\u72B6\u6001\u3002</li><li>\u5982\u679C\u66F4\u65B0\u5931\u8D25\u5C31\u610F\u5473\u7740\u81F3\u5C11\u5B58\u5728\u4E00\u6761\u7EBF\u7A0B\u4E0E\u5F53\u524D\u7EBF\u7A0B\u7ADE\u4E89\u3002\u865A\u62DF\u673A\u68C0\u67E5\u5BF9\u8C61\u7684 Mark Word \u662F\u5426\u6307\u5411\u5F53\u524D\u7EBF\u7A0B\u7684\u6808\u5E27</li><li>\u5982\u679C\u6307\u5411\u5F53\u524D\u7EBF\u7A0B\u7684\u6808\u5E27\uFF0C\u8BF4\u660E\u5F53\u524D\u7EBF\u7A0B\u5DF2\u7ECF\u62E5\u6709\u4E86\u9501\uFF0C\u76F4\u63A5\u8FDB\u5165\u540C\u6B65\u5757\u7EE7\u7EED\u6267\u884C</li><li>\u5982\u679C\u4E0D\u662F\u5219\u8BF4\u660E\u9501\u5BF9\u8C61\u5DF2\u7ECF\u88AB\u5176\u4ED6\u7EBF\u7A0B\u62A2\u5360\u3002</li><li>\u5982\u679C\u51FA\u73B0\u4E24\u6761\u4EE5\u4E0A\u7EBF\u7A0B\u4E89\u7528\u540C\u4E00\u4E2A\u9501\uFF0C\u8F7B\u91CF\u7EA7\u9501\u5C31\u4E0D\u518D\u6709\u6548\uFF0C\u5C06\u81A8\u80C0\u4E3A\u91CD\u91CF\u7EA7\u9501\uFF0C\u9501\u6807\u5FD7\u72B6\u6001\u53D8\u4E3A 10\uFF0C\u6B64\u65F6Mark Word \u5B58\u50A8\u7684\u5C31\u662F\u6307\u5411\u91CD\u91CF\u7EA7\u9501\u7684\u6307\u9488\uFF0C\u540E\u9762\u7B49\u5F85\u9501\u7684\u7EBF\u7A0B\u4E5F\u5FC5\u987B\u963B\u585E\u3002</li></ul><h3 id="\u7B80\u8FF0\u9501\u4F18\u5316\u7B56\u7565" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0\u9501\u4F18\u5316\u7B56\u7565" aria-hidden="true">#</a> \u7B80\u8FF0\u9501\u4F18\u5316\u7B56\u7565</h3><p>\u5373\u81EA\u9002\u5E94\u81EA\u65CB\u3001\u9501\u6D88\u9664\u3001\u9501\u7C97\u5316\u3001\u9501\u5347\u7EA7\u7B49\u7B56\u7565\u504F\u3002</p><h3 id="\u7B80\u8FF0java\u7684\u81EA\u65CB\u9501" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0java\u7684\u81EA\u65CB\u9501" aria-hidden="true">#</a> \u7B80\u8FF0Java\u7684\u81EA\u65CB\u9501</h3><p>\u7EBF\u7A0B\u83B7\u53D6\u9501\u5931\u8D25\u540E\uFF0C\u53EF\u4EE5\u91C7\u7528\u8FD9\u6837\u7684\u7B56\u7565\uFF0C\u53EF\u4EE5\u4E0D\u653E\u5F03 CPU \uFF0C\u4E0D\u505C\u7684\u91CD\u8BD5\u5185\u91CD\u8BD5\uFF0C\u8FD9\u79CD\u64CD\u4F5C\u4E5F\u79F0\u4E3A\u81EA\u65CB\u9501\u3002</p><h3 id="\u7B80\u8FF0\u81EA\u9002\u5E94\u81EA\u65CB\u9501" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0\u81EA\u9002\u5E94\u81EA\u65CB\u9501" aria-hidden="true">#</a> \u7B80\u8FF0\u81EA\u9002\u5E94\u81EA\u65CB\u9501</h3><p>\u81EA\u9002\u5E94\u81EA\u65CB\u9501\u81EA\u65CB\u6B21\u6570\u4E0D\u518D\u4EBA\u4E3A\u8BBE\u5B9A\uFF0C\u901A\u5E38\u7531\u524D\u4E00\u6B21\u5728\u540C\u4E00\u4E2A\u9501\u4E0A\u7684\u81EA\u65CB\u65F6\u95F4\u53CA\u9501\u7684\u62E5\u6709\u8005\u7684\u72B6\u6001\u51B3\u5B9A\u3002</p><h3 id="\u7B80\u8FF0\u9501\u7C97\u5316" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0\u9501\u7C97\u5316" aria-hidden="true">#</a> \u7B80\u8FF0\u9501\u7C97\u5316</h3><p>\u9501\u7C97\u5316\u7684\u601D\u60F3\u5C31\u662F\u6269\u5927\u52A0\u9501\u8303\u56F4\uFF0C\u907F\u514D\u53CD\u590D\u7684\u52A0\u9501\u548C\u89E3\u9501\u3002</p><h3 id="\u7B80\u8FF0\u9501\u6D88\u9664" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0\u9501\u6D88\u9664" aria-hidden="true">#</a> \u7B80\u8FF0\u9501\u6D88\u9664</h3><p>\u9501\u6D88\u9664\u662F\u4E00\u79CD\u66F4\u4E3A\u5F7B\u5E95\u7684\u4F18\u5316\uFF0C\u5728\u7F16\u8BD1\u65F6\uFF0CJava\u7F16\u8BD1\u5668\u5BF9\u8FD0\u884C\u4E0A\u4E0B\u6587\u8FDB\u884C\u626B\u63CF\uFF0C\u53BB\u9664\u4E0D\u53EF\u80FD\u5B58\u5728\u5171\u4EAB\u8D44\u6E90\u7ADE\u4E89\u7684\u9501\u3002</p><h3 id="\u7B80\u8FF0lock\u4E0Ereentrantlock" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0lock\u4E0Ereentrantlock" aria-hidden="true">#</a> \u7B80\u8FF0Lock\u4E0EReentrantLock</h3><p>Lock\u63A5\u53E3\u662F Java\u5E76\u53D1\u5305\u7684\u9876\u5C42\u63A5\u53E3\u3002</p><p>\u53EF\u91CD\u5165\u9501 ReentrantLock \u662F Lock \u6700\u5E38\u89C1\u7684\u5B9E\u73B0\uFF0C\u4E0E synchronized \u4E00\u6837\u53EF\u91CD\u5165\u3002ReentrantLock \u5728\u9ED8\u8BA4\u60C5\u51B5\u4E0B\u662F\u975E\u516C\u5E73\u7684\uFF0C\u53EF\u4EE5\u901A\u8FC7\u6784\u9020\u65B9\u6CD5\u6307\u5B9A\u516C\u5E73\u9501\u3002\u4E00\u65E6\u4F7F\u7528\u4E86\u516C\u5E73\u9501\uFF0C\u6027\u80FD\u4F1A\u4E0B\u964D\u3002</p><h3 id="\u7B80\u8FF0aqs" tabindex="-1"><a class="header-anchor" href="#\u7B80\u8FF0aqs" aria-hidden="true">#</a> \u7B80\u8FF0AQS</h3><p>AQS\uFF08AbstractQuenedSynchronizer\uFF09\u62BD\u8C61\u7684\u961F\u5217\u5F0F\u540C\u6B65\u5668\u3002AQS\u662F\u5C06\u6BCF\u4E00\u6761\u8BF7\u6C42\u5171\u4EAB\u8D44\u6E90\u7684\u7EBF\u7A0B\u5C01\u88C5\u6210\u4E00\u4E2A\u9501\u961F\u5217\u7684\u4E00\u4E2A\u7ED3\u70B9\uFF08Node\uFF09\uFF0C\u6765\u5B9E\u73B0\u9501\u7684\u5206\u914D\u3002AQS\u662F\u7528\u6765\u6784\u5EFA\u9501\u6216\u5176\u4ED6\u540C\u6B65\u7EC4\u4EF6\u7684\u57FA\u7840\u6846\u67B6\uFF0C\u5B83\u4F7F\u7528\u4E00\u4E2A volatile int state \u53D8\u91CF\u4F5C\u4E3A\u5171\u4EAB\u8D44\u6E90\uFF0C\u5982\u679C\u7EBF\u7A0B\u83B7\u53D6\u8D44\u6E90\u5931\u8D25\uFF0C\u5219\u8FDB\u5165\u540C\u6B65\u961F\u5217\u7B49\u5F85\uFF1B\u5982\u679C\u83B7\u53D6\u6210\u529F\u5C31\u6267\u884C\u4E34\u754C\u533A\u4EE3\u7801\uFF0C\u91CA\u653E\u8D44\u6E90\u65F6\u4F1A\u901A\u77E5\u540C\u6B65\u961F\u5217\u4E2D\u7684\u7B49\u5F85\u7EBF\u7A0B\u3002</p><p>\u5B50\u7C7B\u901A\u8FC7\u7EE7\u627F\u540C\u6B65\u5668\u5E76\u5B9E\u73B0\u5B83\u7684\u62BD\u8C61\u65B9\u6CD5getState\u3001setState \u548C compareAndSetState\u5BF9\u540C\u6B65\u72B6\u6001\u8FDB\u884C\u66F4\u6539\u3002</p><p>AQS\u83B7\u53D6\u72EC\u5360\u9501/\u91CA\u653E\u72EC\u5360\u9501\u539F\u7406\uFF1A</p><p>\u83B7\u53D6\uFF1A\uFF08acquire\uFF09</p><ul><li>\u8C03\u7528 tryAcquire \u65B9\u6CD5\u5B89\u5168\u5730\u83B7\u53D6\u7EBF\u7A0B\u540C\u6B65\u72B6\u6001\uFF0C\u83B7\u53D6\u5931\u8D25\u7684\u7EBF\u7A0B\u4F1A\u88AB\u6784\u9020\u540C\u6B65\u8282\u70B9\u5E76\u901A\u8FC7 addWaiter \u65B9\u6CD5\u52A0\u5165\u5230\u540C\u6B65\u961F\u5217\u7684\u5C3E\u90E8\uFF0C\u5728\u961F\u5217\u4E2D\u81EA\u65CB\u3002</li><li>\u8C03\u7528 acquireQueued \u65B9\u6CD5\u4F7F\u5F97\u8BE5\u8282\u70B9\u4EE5\u6B7B\u5FAA\u73AF\u7684\u65B9\u5F0F\u83B7\u53D6\u540C\u6B65\u72B6\u6001\uFF0C\u5982\u679C\u83B7\u53D6\u4E0D\u5230\u5219\u963B\u585E\u3002</li></ul><p>\u91CA\u653E\uFF1A\uFF08release\uFF09</p><ul><li>\u8C03\u7528 tryRelease \u65B9\u6CD5\u91CA\u653E\u540C\u6B65\u72B6\u6001</li><li>\u8C03\u7528 unparkSuccessor \u65B9\u6CD5\u5524\u9192\u5934\u8282\u70B9\u7684\u540E\u7EE7\u8282\u70B9\uFF0C\u4F7F\u540E\u7EE7\u8282\u70B9\u91CD\u65B0\u5C1D\u8BD5\u83B7\u53D6\u540C\u6B65\u72B6\u6001\u3002</li></ul><p>AQS\u83B7\u53D6\u5171\u4EAB\u9501/\u91CA\u653E\u5171\u4EAB\u9501\u539F\u7406</p><p>\u83B7\u53D6\u9501\uFF08acquireShared\uFF09</p><ul><li>\u8C03\u7528 tryAcquireShared \u65B9\u6CD5\u5C1D\u8BD5\u83B7\u53D6\u540C\u6B65\u72B6\u6001\uFF0C\u8FD4\u56DE\u503C\u4E0D\u5C0F\u4E8E 0 \u8868\u793A\u80FD\u83B7\u53D6\u540C\u6B65\u72B6\u6001\u3002</li><li>\u91CA\u653E\uFF08releaseShared\uFF09\uFF0C\u5E76\u5524\u9192\u540E\u7EED\u5904\u4E8E\u7B49\u5F85\u72B6\u6001\u7684\u8282\u70B9\u3002</li></ul><hr>',127),s=a("\u6295\u7A3F\u4F5C\u8005\uFF1A\u540E\u7AEF\u6280\u672F\u5C0F\u725B\u8BF4 \u8F6C\u8F7D\u94FE\u63A5\uFF1A"),u={href:"https://mp.weixin.qq.com/s/PmeH38qWVxyIhBpsAsjG7w",target:"_blank",rel:"noopener noreferrer"},p=a("https://mp.weixin.qq.com/s/PmeH38qWVxyIhBpsAsjG7w"),x=e("hr",null,null,-1),m=a("\u6700\u8FD1\u6574\u7406\u4E86\u4E00\u4EFD\u725B\u903C\u7684\u5B66\u4E60\u8D44\u6599\uFF0C\u5305\u62EC\u4F46\u4E0D\u9650\u4E8EJava\u57FA\u7840\u90E8\u5206\uFF08JVM\u3001Java\u96C6\u5408\u6846\u67B6\u3001\u591A\u7EBF\u7A0B\uFF09\uFF0C\u8FD8\u56CA\u62EC\u4E86 "),f=e("strong",null,"\u6570\u636E\u5E93\u3001\u8BA1\u7B97\u673A\u7F51\u7EDC\u3001\u7B97\u6CD5\u4E0E\u6570\u636E\u7ED3\u6784\u3001\u8BBE\u8BA1\u6A21\u5F0F\u3001\u6846\u67B6\u7C7BSpring\u3001Netty\u3001\u5FAE\u670D\u52A1\uFF08Dubbo\uFF0C\u6D88\u606F\u961F\u5217\uFF09 \u7F51\u5173",-1),b=a(" \u7B49\u7B49\u7B49\u7B49\u2026\u2026\u8BE6\u60C5\u6233\uFF1A"),A={href:"https://tobebetterjavaer.com/pdf/programmer-111.html",target:"_blank",rel:"noopener noreferrer"},v=a("\u53EF\u4EE5\u8BF4\u662F2022\u5E74\u5168\u7F51\u6700\u5168\u7684\u5B66\u4E60\u548C\u627E\u5DE5\u4F5C\u7684PDF\u8D44\u6E90\u4E86"),S=e("p",null,[a("\u5173\u6CE8\u4E8C\u54E5\u7684\u539F\u521B\u516C\u4F17\u53F7 "),e("strong",null,"\u6C89\u9ED8\u738B\u4E8C"),a("\uFF0C\u56DE\u590D"),e("strong",null,"111"),a(" \u5373\u53EF\u514D\u8D39\u9886\u53D6\u3002")],-1),g=e("p",null,[e("img",{src:"http://cdn.tobebetterjavaer.com/tobebetterjavaer/images/xingbiaogongzhonghao.png",alt:""})],-1);function E(T,y){const i=n("ExternalLinkIcon");return h(),t("div",null,[c,e("p",null,[s,e("a",u,[p,r(i)])]),x,e("p",null,[m,f,b,e("a",A,[v,r(i)])]),S,g])}var L=l(d,[["render",E],["__file","java-thread-baguwen.html.vue"]]);export{L as default};