{"id":614,"date":"2013-12-09T15:45:00","date_gmt":"2013-12-09T07:45:00","guid":{"rendered":"http:\/\/coderbee.net\/?p=614"},"modified":"2013-12-20T17:50:32","modified_gmt":"2013-12-20T09:50:32","slug":"juc-%e6%ba%90%e7%a0%81%e5%88%86%e6%9e%90-%e4%b8%80-abstractqueuedsynchronizer","status":"publish","type":"post","link":"https:\/\/coderbee.net\/index.php\/concurrent\/20131209\/614","title":{"rendered":"JUC \u6e90\u7801\u5206\u6790 \u4e00 AbstractQueuedSynchronizer"},"content":{"rendered":"<h3>\u961f\u5217\u7ed3\u70b9<\/h3>\n<p>Node\u7c7b\u578b\u7684waitStatus\u3001prev\u3001next \u5b57\u6bb5\u90fd\u7528volatile \u4fee\u9970\uff0c\u8fd9\u6837\u76f4\u63a5\u7684\u8bfb\u5199\u64cd\u4f5c\u5c31\u5177\u6709\u5185\u5b58\u53ef\u89c6\u6027\u3002\u8868\u793aNode\u72b6\u6001\u7684waitStatus\u5b57\u6bb5\u662f\u4e2aint\u7c7b\u578b\uff0c\u8fd9\u6837\u901a\u8fc7\u6570\u503c\u6bd4\u8f83\u5c31\u53ef\u4ee5\u5224\u65adNode\u7684\u72b6\u6001\uff0c\u800c\u4e0d\u9700\u8981\u5f88\u591a\u7684\u5206\u652f\u8bed\u53e5\u3002<\/p>\n<p>\u5b83\u7684\u6784\u9020\u51fd\u6570\u4e5f\u662f\u6bd4\u8f83\u6709\u610f\u601d\u7684\uff0c\u6709\u4e09\u4e2a\uff0c\u5206\u522b\u7528\u4e8e\u6784\u5efa\u540c\u6b65\u961f\u5217\u7684\u521d\u59cb\u5934\u7ed3\u70b9\u6216\u5171\u4eab\u6807\u8bc6\u3001\u6784\u9020\u540c\u6b65\u961f\u5217\u7684\u6709\u6548\u7ed3\u70b9\u3001\u6784\u9020\u6761\u4ef6\u961f\u5217\u7684\u7ed3\u70b9\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u540c\u6b65\u961f\u5217\u548c\u6761\u4ef6\u961f\u5217\u7684\u7ed3\u70b9\u662f\u76f8\u540c\u7684\u7c7b\u578b\uff0c\u6240\u4ee5\u53ef\u4ee5\u4ece\u6761\u4ef6\u961f\u5217\u8f6c\u79fb\u5230\u540c\u6b65\u961f\u5217\u53bb\u83b7\u53d6\u8bb8\u53ef\u3002<\/p>\n<pre><code class=\"java\">static final class Node {\n       \/\/ \u8868\u660e\u8282\u70b9\u662f\u5426\u4ee5\u5171\u4eab\u6a21\u5f0f\u7b49\u5f85\u7684\u6807\u8bb0\n    static final Node SHARED = new Node();\n\n    \/\/ \u8868\u660e\u8282\u70b9\u662f\u5426\u4ee5\u72ec\u5360\u6a21\u5f0f\u7b49\u5f85\u7684\u6807\u8bb0\n    static final Node EXCLUSIVE = null;\n\n    \/\/ \u8868\u660e\u7ebf\u7a0b\u5df2\u88ab\u53d6\u6d88\n    static final int CANCELLED =  1;\n\n    \/\/ \u8868\u660e\u540e\u7eed\u8282\u70b9\u7684\u7ebf\u7a0b\u9700\u8981unparking\n    static final int SIGNAL    = -1;\n\n    \/\/ \u8868\u660e\u7ebf\u7a0b\u6b63\u5728\u7b49\u5f85\u4e00\u4e2a\u6761\u4ef6\n    static final int CONDITION = -2;\n\n    \/\/ \u8868\u660e\u4e0b\u4e00\u6b21acquireShared\u5e94\u8be5\u65e0\u6761\u4ef6\u4f20\u64ad\n    static final int PROPAGATE = -3;\n\n    \/*\n     * \u72b6\u6001\u5b57\u6bb5\uff0c\u53ea\u80fd\u53d6\u4e0b\u9762\u7684\u503c\uff1a\n     * SIGNAL(-1)\uff1a    \u8fd9\u4e2a\u7ed3\u70b9\u7684\u540e\u7ee7\u662f\uff08\u6216\u5f88\u5feb\u662f\uff09\u963b\u585e\u7684\uff08\u901a\u8fc7park\uff09\uff0c\u6240\u4ee5\u5f53\u524d\u7ed3\u70b9\n     *              \u5fc5\u987bunpark\u5b83\u7684\u540e\u7ee7\uff0c\u5f53\u5b83\u91ca\u653e\u6216\u53d6\u6d88\u65f6\u3002\u4e3a\u4e86\u907f\u514d\u7ade\u4e89\uff0cacquire\u65b9\u6cd5\u5fc5\u987b\n     *              \u9996\u5148\u8868\u660e\u5b83\u4eec\u9700\u8981\u4e00\u4e2a\u4fe1\u53f7\uff0c\u7136\u540e\u518d\u6b21\u5c1d\u8bd5\u539f\u5b50\u6027acquire\uff0c\u5982\u679c\u5931\u8d25\u4e86\u5c31\u963b\u585e\u3002\n     *               \n     * CANCELLED(1)\uff1a  \u8fd9\u4e2a\u7ed3\u70b9\u7531\u4e8e\u8d85\u65f6\u6216\u4e2d\u65ad\u5df2\u88ab\u53d6\u6d88\u3002\u7ed3\u70b9\u4ece\u4e0d\u79bb\u5f00\u8fd9\u79cd\u72b6\u6001\u3002\u5c24\u5176\u662f\uff0c\n     *                 \u8fd9\u79cd\u72b6\u6001\u7684\u7ebf\u7a0b\u4ece\u4e0d\u518d\u6b21\u963b\u585e\u3002\n     *\n     * CONDITION(-2)\uff1a \u8fd9\u4e2a\u7ed3\u70b9\u5f53\u524d\u5728\u4e00\u4e2a\u6761\u4ef6\u961f\u5217\u4e0a\u3002\u5b83\u5c06\u4e0d\u4f1a\u7528\u4e8esync\u961f\u5217\u7684\u7ed3\u70b9\uff0c\n     *               \u76f4\u5230\u88ab\u8f6c\u79fb\uff0c\u5728\u90a3\u65f6\uff0c\u7ed3\u70b9\u7684\u72b6\u6001\u5c06\u88ab\u8bbe\u4e3a0.\n     *              \u8fd9\u4e2a\u503c\u5728\u8fd9\u91cc\u7684\u4f7f\u7528\u4e0e\u5176\u4ed6\u5b57\u6bb5\u7684\u4f7f\u7528\u6ca1\u6709\u5173\u7cfb\uff0c\u4ec5\u4ec5\u662f\u7b80\u5316\u7ed3\u6784\u3002\n     *               \n     * PROPAGATE(-3)\uff1a releaseShared\u5e94\u8be5\u4f20\u9012\u7ed9\u5176\u4ed6\u7ed3\u70b9\u3002\u8fd9\u662f\u5728doReleaseShared\u91cc\u8bbe\u7f6e\n     *                 \uff08\u4ec5\u4ec5\u662f\u5934\u7ed3\u70b9\uff09\u4ee5\u786e\u4fdd\u4f20\u9012\u7ee7\u7eed\uff0c\u5373\u4f7f\u5176\u4ed6\u64cd\u4f5c\u6709\u5e72\u6d89\u3002\n     *\n     * 0\uff1a             \u975e\u4ee5\u4e0a\u4efb\u4f55\u503c\u3002\n     *\n     * \u503c\u662f\u7ec4\u7ec7\u4e3a\u6570\u5b57\u7684\u7528\u4ee5\u7b80\u5316\u4f7f\u7528\u3002\u975e\u8d1f\u503c\u8868\u793a\u7ed3\u70b9\u4e0d\u9700\u8981\u4fe1\u53f7\u3002\u8fd9\u6837\uff0c\u5927\u90e8\u5206\u4ee3\u7801\u4e0d\u9700\u8981\n     * \u68c0\u67e5\u7279\u5b9a\u7684\u503c\uff0c\u53ea\u9700\u8981(\u68c0\u67e5)\u7b26\u53f7\u3002\n     *\n     * \u5bf9\u4e8e\u666e\u901a\u540c\u6b65\u7ed3\u70b9\uff0c\u5b57\u6bb5\u521d\u59cb\u5316\u4e3a0\uff1b\u5bf9\u4e8e\u6761\u4ef6\u7ed3\u70b9\u521d\u59cb\u5316\u4e3aCONDITION(-2)\u3002\n     * \u901a\u8fc7CAS\u64cd\u4f5c\u4fee\u6539(\u6216\u8005\uff0c\u5f53\u5141\u8bb8\u65f6\uff0c\u7528\u65e0\u6761\u4ef6volatile\u5199\u3002)\n     *\/\n    volatile int waitStatus;\n\n    \/*\n     * \u8fde\u63a5\u5230\u5f53\u524d\u7ed3\u70b9\/\u7ebf\u7a0b\u4f9d\u8d56\u7684\u7528\u6765\u68c0\u67e5\u7b49\u5f85\u72b6\u6001\u7684\u524d\u9a71\u7ed3\u70b9\u3002\n     * \u5728\u8fdb\u5165\u961f\u5217\u65f6\u8d4b\u503c\uff0c\u53ea\u5728\u51fa\u961f\u5217\u65f6\u7f6e\u4e3a\u7a7a\uff08\u4e3a\u4e86GC\u8003\u8651\uff09\u3002\n     * \u6839\u636e\u524d\u9a71\u7ed3\u70b9\u7684\u53d6\u6d88\uff0c\u6211\u4eec\u4f7f\u67e5\u627e\u4e00\u4e2a\u975e\u53d6\u6d88\u7ed3\u70b9\u7684while\u5faa\u73af\u77ed\u8def\uff0c\u8fd9\u4e2a\u603b\u662f\u4f1a\u9000\u51fa\uff0c\n     * \u56e0\u4e3a\u5934\u7ed3\u70b9\u4ece\u4e0d\u4f1a\u662f\u53d6\u6d88\u4e86\u7684\uff1a\u4e00\u4e2a\u7ed3\u70b9\u6210\u4e3a\u5934\u53ea\u80fd\u662f\u4e00\u6b21\u6210\u529f\u7684acquire\u64cd\u4f5c\u7ed3\u679c\u3002\n     *\n     * \u4e00\u4e2a\u53d6\u6d88\u4e86\u7684\u7ebf\u7a0b\u4ece\u4e0d\u4f1a\u5728\u83b7\u53d6\u64cd\u4f5c\u6210\u529f\uff0c\u7ebf\u7a0b\u53ea\u80fd\u53d6\u6d88\u81ea\u5df1\uff0c\u4e0d\u80fd\u662f\u5176\u4ed6\u7ed3\u70b9\u3002\n     *\/\n    volatile Node prev;\n\n    \/*\n     * \u8fde\u63a5\u5230\u5f53\u524d\u7ed3\u70b9\/\u7ebf\u7a0b\u91ca\u653e\u65f6\u89e3\u9664\u963b\u585e\u7684\u540e\u7eed\u7ed3\u70b9\u3002\n     * \u5728\u5165\u961f\u5217\u65f6\u8d4b\u503c\uff0c\u5728\u7ed5\u8fc7\u5df2\u53d6\u6d88\u524d\u9a71\u8282\u70b9\u65f6\u8c03\u6574\uff0c\u51fa\u961f\u5217\u65f6\u7f6e\u4e3a\u7a7a\uff08for GC\uff09\u3002\n     * \u5165\u961f\u64cd\u4f5c\u4e0d\u4f1a\u7ed9\u524d\u9a71\u7ed3\u70b9\u7684next\u5b57\u6bb5\u8d4b\u503c\uff0c\u76f4\u5230\u9644\u4ef6\u540e\uff08\u628a\u65b0\u8282\u70b9\u8d4b\u503c\u7ed9\u961f\u5217\u7684tail\u5c5e\u6027\uff1f\uff09\uff0c\n     * \u6240\u4ee5\u770b\u5230next\u5b57\u6bb5\u4e3a\u7a7a\u4e0d\u4e00\u5b9a\u8868\u793a\u5b83\u5c31\u662f\u961f\u5217\u7684\u5c3e\u7ed3\u70b9\u3002\u7136\u800c\uff0c\u5982\u679cnext\u5b57\u6bb5\u770b\u8d77\u6765\u662f\u7a7a\uff0c\n     * \u6211\u4eec\u53ef\u4ee5\u4ecetail\u5411\u524d\u904d\u5386\u8fdb\u884c\u53cc\u91cd\u68c0\u67e5\u3002\n     * \u88ab\u53d6\u6d88\u4e86\u7684\u7ed3\u70b9\u7684next\u5b57\u6bb5\u88ab\u8bbe\u7f6e\u4e3a\u6307\u5411\u5b83\u81ea\u5df1\u800c\u4e0d\u662f\u7a7a\uff0c\u8fd9\u8ba9isOnSyncQueue\u53d8\u5f97\u5bb9\u6613\u3002\n     *\/\n    volatile Node next;\n\n    \/*\n     * \u5217\u961f\u5728\u8fd9\u4e2a\u7ed3\u70b9\u7684\u7ebf\u7a0b\uff0c\u5728\u6784\u9020\u65f6\u521d\u59cb\u5316\uff0c\u7528\u5b8c\u540e\u7f6e\u7a7a\u3002\n     *\/\n    volatile Thread thread;\n\n    \/*\n     * \u8fde\u63a5\u5230\u4e0b\u4e00\u4e2a\u5728\u6761\u4ef6\u4e0a\u7b49\u5f85\u7684\u7ed3\u70b9\u6216\u662f\u7279\u6b8a\u7684\u503cSHARED\u3002\n     * \u56e0\u4e3a\u6761\u4ef6\u961f\u5217\u53ea\u5728\u72ec\u5360\u6a21\u5f0f\u4e0b\u6301\u6709\u65f6\u8bbf\u95ee\uff0c\u6211\u4eec\u53ea\u9700\u8981\u4e00\u4e2a\u7b80\u5355\u7684\u94fe\u8868\u961f\u5217\u6765\u6301\u6709\u5728\u6761\u4ef6\u4e0a\u7b49\u5f85\u7684\u7ed3\u70b9\u3002\n     * \u4ed6\u4eec\u7136\u540e\u88ab\u8f6c\u79fb\u5230\u961f\u5217\u53bbre-acquire\u3002\n     * \u56e0\u4e3a\u6761\u4ef6\u53ea\u80fd\u662f\u72ec\u5360\u7684\uff0c\u6211\u4eec\u901a\u8fc7\u7528\u4e00\u4e2a\u7279\u6b8a\u7684\u503c\u6765\u8868\u660e\u5171\u4eab\u6a21\u5f0f \u6765\u8282\u7701\u4e00\u4e2a\u5b57\u6bb5\u3002\n     *\/\n    Node nextWaiter;\n\n    Node() {    \/\/ Used to establish initial head or SHARED marker\n    }\n\n    Node(Thread thread, Node mode) {     \/\/ Used by addWaiter\n        this.nextWaiter = mode;\n        this.thread = thread;\n    }\n\n    Node(Thread thread, int waitStatus) { \/\/ Used by Condition\n        this.waitStatus = waitStatus;\n        this.thread = thread;\n    }\n}\n<\/code><\/pre>\n<h3>\u6dfb\u52a0\u7ed3\u70b9\u5230\u7b49\u5f85\u961f\u5217<\/h3>\n<p>\u5bf9\u4e8e\u6dfb\u52a0\u7ed3\u70b9\u5230\u961f\u5217\u7684\u64cd\u4f5c\u6700\u91cd\u8981\u7684\u662f\u8981\u4fdd\u8bc1\uff1a\u5373\u4f7f\u6dfb\u52a0\u7684CAS\u64cd\u4f5c\u5931\u8d25\u4e86\uff0c\u4e5f\u4e0d\u80fd\u5f71\u54cd\u961f\u5217\u7ed3\u70b9\u73b0\u6709\u7684\u8fde\u63a5\u5173\u7cfb\u3002<\/p>\n<p>\u5bf9\u4e8e\u65b0\u7ed3\u70b9\uff0c\u5b83\u5728CAS\u4e4b\u524d\u6307\u5411\u5b83\u7684\u9884\u671f\u524d\u9a71\uff0cCAS\u6210\u529f\u4e4b\u540e\u518d\u66f4\u65b0\u9884\u671f\u524d\u9a71\u7684\u540e\u7ee7\u6307\u9488\u3002<\/p>\n<p>\u5728\u6b65\u9aa41\u6210\u529f\u4e4b\u540e\u3001\u6b65\u9aa42\u5b8c\u6210\u4e4b\u524d\uff0c\u5176\u4ed6\u7ebf\u7a0b\u901a\u8fc7\u7ed3\u70b9\u7684 &#8220;next&#8221; \u8fde\u63a5\u53ef\u80fd\u770b\u5230\u201c\u5c3e\u7ed3\u70b9\u201d\uff08\u5373\u4ee3\u7801\u91cc\u7684 pred\uff09\u7684 &#8220;next&#8221; \u4e3a\u7a7a\uff0c\u4f46\u5176\u5b9e\u961f\u5217\u91cc\u5df2\u7ecf\u52a0\u5165\u65b0\u7684\u7ed3\u70b9\uff0c\u8fd9\u4e5f\u662f\u4e3a\u4ec0\u4e48\u901a\u8fc7 &#8220;next&#8221; \u8fde\u63a5\u904d\u5386\u961f\u5217\u65f6\u78b0\u5230\u540e\u7ee7\u4e3a\u7a7a\u7684\uff0c\u5fc5\u987b\u4ece\u539f\u5b50\u5730\u66f4\u65b0\u7684 &#8220;tail&#8221; \u7ed3\u70b9\u5411\u540e\u904d\u5386\u3002<br \/>\n<!--more--><\/p>\n<pre><code class=\"java\">private Node addWaiter(Node mode) {\n    Node node = new Node(Thread.currentThread(), mode);\n   \/\/ \u5c1d\u8bd5enq\u7684\u5feb\u901f\u8def\u5f84\uff1b\u5931\u8d25\u540e\u56de\u9000\u5230\u5b8c\u6574\u7684enq\u3002\n    Node pred = tail;\n    if (pred != null) {\n      \/\/ \u628a\u65b0\u7ed3\u70b9\u7684\u524d\u9a71\u6307\u5411pred\uff0c\u5fc5\u987b\u5728\u4e0b\u9762\u7684CAS\u5b8c\u6210\u4e4b\u524d\u8bbe\u7f6e\uff0c\n      \/\/ \u8fd9\u6837\u786e\u4fdd\u4e00\u65e6CAS\u6210\u529f\u540e\uff0c\u4ecetail\u5411\u540e\u904d\u5386\u662fok\u7684\u3002\n        node.prev = pred;\n        if (compareAndSetTail(pred, node)) {  \/\/ \u6b65\u9aa4 1\n             \/\/ \u65b0\u8282\u70b9\u6210\u529f\u8fdb\u5165\u961f\u5217\n             \/\/ \u524d\u9a71\u7ed3\u70b9\u7684next\u5b57\u6bb5\u6307\u5411\u65b0\u7ed3\u70b9\uff0c\u5efa\u7acb\u5b8c\u6574\u7684\u8fde\u63a5\u3002\n            pred.next = node; \/\/ \u6b65\u9aa4 2\n            return node;\n        }\n    }\n    enq(node);\n    return node;\n}\n\nprivate Node enq(final Node node) {\n    for (;;) {\n        Node t = tail;\n        if (t == null) { \/\/ \u961f\u5217\u662f\u7a7a\uff0c\u5fc5\u987b\u521d\u59cb\u5316\u3002\n            if (compareAndSetHead(new Node())) \/\/ \u539f\u5b50\u5730\u8bbe\u7f6e\u5934\u7ed3\u70b9\n                tail = head; \/\/ \u5c3e\u7ed3\u70b9\u4e5f\u6307\u5411\u5934\u7ed3\u70b9\n        } else {\n            node.prev = t;\n            if (compareAndSetTail(t, node)) {  \/\/ \u6b65\u9aa4 1\n                t.next = node; \/\/ \u6b65\u9aa4 2\n \/\/ \u5728\u628a\u65b0\u7ed3\u70b9\u8bbe\u7f6e\u4e3atail\u540e\u624d\u80fd\u66f4\u65b0\u524d\u9a71\u7684next\u5b57\u6bb5\uff0c\u8fd9\u6837\uff0c\u5373\u4f7fCAS\u5931\u8d25\u4e86\u4e5f\u4e0d\u4f1a\u5f71\u54cd\u539f\u6765\u7684\u8fde\u63a5\u5173\u7cfb\u3002\n                return t;\n            }\n        }\n    }\n}\n<\/code><\/pre>\n<h3>acquire\u64cd\u4f5c<\/h3>\n<p>acquire\u65b9\u6cd5\u4e0d\u63d0\u4f9b\u7edd\u5bf9\u516c\u5e73\u7684\u4fdd\u8bc1\uff0c\u56e0\u4e3a\u73b0\u5728\u5728\u52a0\u5165\u961f\u5217\u4e4b\u524d\u5148\u8fdb\u884ctryAcquire\u64cd\u4f5c\uff0c\u5982\u679c\u8fd9\u4e2a\u7ebf\u7a0b\u5148\u4e8e\u5934\u7ed3\u70b9\u9501\u5b9a\uff0c\u90a3\u4e48\u5934\u7ed3\u70b9\u5c31\u53ea\u80fd\u7ee7\u7eed\u7b49\u5f85\u4e86\u3002\u8fd9\u79cd\u60c5\u5f62\u79f0\u4e3a\u95ef\u5165\u3002<\/p>\n<p>\u8fd9\u4e2aacquire\u4e4b\u6240\u4ee5\u5148\u5c1d\u8bd5\u83b7\u53d6\u662f\u4e3a\u4e86\u5728\u65e0\u7ade\u4e89\u7684\u60c5\u51b5\u4e0b\u63d0\u9ad8\u6027\u80fd\uff0c\u5e76\u53ef\u4ee5\u5b9e\u73b0\u975e\u516c\u5e73\u7684\u83b7\u53d6\u3002\u5982\u679c\u8981\u4fdd\u8bc1\u7edd\u5bf9\u7684\u516c\u5e73\u6027\uff0c\u5219\u53ef\u4ee5\u5728\u5b50\u7c7b\u5b9e\u73b0\u7684tryAcquire\u65b9\u6cd5\u91cc\u5224\u65ad\u5f53\u524d\u7ebf\u7a0b\u662f\u5426\u662f\u5934\u7ed3\u70b9\uff0c\u662f\u5219\u5c1d\u8bd5\u83b7\u53d6\uff0c\u4e0d\u662f\u5219\u76f4\u63a5\u8fd4\u56defalse\u3002<\/p>\n<pre><code class=\"java\">\/\/ \u4ee5\u72ec\u5360\u6a21\u5f0f\u83b7\u53d6\npublic final void acquire(int arg) {\n    if (!tryAcquire(arg) &amp;&amp; \/\/ \u9996\u5148\u5c1d\u8bd5\u83b7\u53d6\n        acquireQueued(addWaiter(Node.EXCLUSIVE), arg))\n      \/\/ \u5931\u8d25\u540e\u52a0\u5165\u7b49\u5f85\u961f\u5217\uff0c\u518d\u4ece\u961f\u5217\u91cc\u518d\u6b21\u5c1d\u8bd5\u83b7\u53d6\uff1b\u6210\u529f\u83b7\u53d6\u540e\u624d\u8fd4\u56de\uff0c\n      \/\/ \u8fd4\u56de\u7684boolean\u8868\u793a\u7ebf\u7a0b\u662f\u5426\u66fe\u7ecf\u88ab\u4e2d\u65ad\u3002\n\n      \/\/ \u5728acquireQueued\u65b9\u6cd5\u91cc\uff0c\u7ebf\u7a0b\u53ef\u80fd\u88ab\u53cd\u590dpark\u3001unpark\uff0c\u76f4\u5230\u83b7\u53d6\u9501\u3002\n      selfInterrupt(); \/\/ \u91cd\u65b0\u8bbe\u7f6e\u4e2d\u65ad\u72b6\u6001\u4f4d\uff0c\u662f\u5426\u6267\u884c\u53d6\u51b3\u4e8eacquireQueued\u7684\u8fd4\u56de\u503c\n}\n\nfinal boolean acquireQueued(final Node node, int arg) {\n    boolean failed = true;\n    try {\n        boolean interrupted = false; \/\/ \u7ebf\u7a0b\u662f\u5426\u66fe\u88ab\u4e2d\u65ad\u662f\u7531\u8fd9\u4e2a\u53d8\u91cf\u8bb0\u5f55\u7684\u3002\n        for (;;) { \/\/ \u6b7b\u5faa\u73af\uff0c\u7528\u4e8eacquire\u5931\u8d25\u540e\u91cd\u8bd5\n            final Node p = node.predecessor();\n            if (p == head &amp;&amp; tryAcquire(arg)) {\/\/ \u524d\u9a71\u662f\u5934\u7ed3\u70b9\uff0c\u7ee7\u7eed\u5c1d\u8bd5\u83b7\u53d6\n                setHead(node);\n                p.next = null; \/\/ help GC\n                failed = false;\n                return interrupted;\n            }\n            \/\/ \u68c0\u6d4b\u662f\u5426\u9700\u8981\u7b49\u5f85\uff0c\u5982\u679c\u9700\u8981\uff0c\u5219park\u5f53\u524d\u7ebf\u7a0b\n            \/\/ \u53ea\u6709\u524d\u9a71\u5728\u7b49\u5f85\u65f6\u624d\u8fdb\u5165\u7b49\u5f85\uff0c\u5426\u5219\u7ee7\u7eed\u91cd\u8bd5\n            if (shouldParkAfterFailedAcquire(p, node) &amp;&amp;\n                parkAndCheckInterrupt()) \/\/ \u7ebf\u7a0b\u8fdb\u5165\u7b49\u5f85\uff0c\u9700\u8981\u5176\u4ed6\u7ebf\u7a0b\u6765\u5524\u9192\u8fd9\u4e2a\u7ebf\u7a0b\u4ee5\u7ee7\u7eed\u6267\u884c\n                interrupted = true;   \/\/ \u53ea\u8981\u7ebf\u7a0b\u5728\u7b49\u5f85\u8fc7\u7a0b\u4e2d\u88ab\u4e2d\u65ad\u8fc7\u4e00\u6b21\u5c31\u4f1a\u8bb0\u5f55\u4e0b\u6765\n        }\n    } finally {\n        if (failed)\n             \/\/ acquire\u5931\u8d25\uff0c\u53d6\u6d88acquire\n            cancelAcquire(node);\n    }\n}\n\n\/*\n * \u8fd9\u4e2a\u65b9\u6cd5\u662f\u4fe1\u53f7\u63a7\u5236\u7684\u6838\u5fc3\u3002\u68c0\u67e5\u548c\u66f4\u65b0\u6ca1\u6709\u6210\u529f\u83b7\u53d6\u7684\u7ed3\u70b9\u7684\u72b6\u6001\u3002\n *\/\nprivate static boolean shouldParkAfterFailedAcquire(Node pred, Node node) {\n    int ws = pred.waitStatus;\n    if (ws == Node.SIGNAL)\n      \/\/ \u524d\u9a71\u7ed3\u70b9\u4e5f\u5728\u7b49\u5f85\uff0c\u8bf4\u660e\u8fd9\u662f\u4e00\u4e2a\u7a33\u5b9a\u7684\u7b49\u5f85\u72b6\u6001\u3002\n        return true ;\n    if (ws &gt; 0) {\n      \/\/ \u524d\u9a71\u7ed3\u70b9\u5df2\u53d6\u6d88\uff0c\u5411\u524d\u904d\u5386\u76f4\u5230\u627e\u5230\u4e00\u4e2a\u975e\u53d6\u6d88\u7ed3\u70b9\u3002\n        do {\n            node.prev = pred = pred.prev;\n        } while (pred.waitStatus &gt; 0);\n        \/\/ \u628a\u627e\u5230\u7684\u7ed3\u70b9\u7684\u540e\u7ee7\u6307\u5411node\uff0c\u90a3\u4e48\u5f53\u524dpred\u4e0enode\u4e4b\u95f4\u7684\u5df2\u53d6\u6d88\u7ed3\u70b9\u5c31\u4e0d\u518d\u88ab\u5f15\u7528\u4e86\uff0c\u53ef\u4ee5\u88ab\u5783\u573e\u56de\u6536\u3002\n        pred.next = node;\n    } else {\n      \/\/ \u524d\u9a71\u7684\u72b6\u6001\u5fc5\u662f 0 \u6216 PROPAGATE\u4e4b\u4e00\u3002\u8868\u660e\u9700\u8981\u4e00\u4e2a\u4fe1\u53f7\uff0c\u4f46\u4e0dpark\u5148\u3002\n      \/\/ \u8c03\u7528\u8005\u9700\u8981\u91cd\u8bd5\u6765\u786e\u4fdd\u5b83\u5728park\u4e4b\u524d\u6ca1\u6cd5\u83b7\u53d6\u3002\n        compareAndSetWaitStatus(pred, ws, Node.SIGNAL);\n    }\n    return false;\n}\n\nprivate final boolean parkAndCheckInterrupt() {\n       \/\/ park\u5f53\u524d\u6267\u884c\u7ebf\u7a0b\uff0c \u5176\u4ed6\u7ebf\u7a0bunpark\u8fd9\u4e2a\u7ebf\u7a0b\u540e\u7ee7\u7eed\u6267\u884c\n    LockSupport.park( this);\n    return Thread.interrupted();\n}\n<\/code><\/pre>\n<h3>\u7ed3\u70b9\u53d6\u6d88acquire<\/h3>\n<p>\u5f53\u524d\u7ed3\u70b9CN\u53d6\u6d88acquire\u7684\u5904\u7406\u903b\u8f91\u662f\uff1a\u9996\u5148\u83b7\u53d6\u5230CN\u4e4b\u524d\u7684\u6700\u540e\u4e00\u4e2a\u975e\u53d6\u6d88\u7ed3\u70b9PN\uff0cif  CN\u5904\u4e8e\u961f\u5217\u672b\u5c3e \u4e14 \u6210\u529f\u5730\u628aPN\u8bbe\u4e3a\u5c3e\u7ed3\u70b9\u540e\uff0c\u518d\u628aPN\u7684\u540e\u7ee7\u7f6e\u4e3a\u7a7a\u5373\u53ef\uff1b\u5982\u679c\u524d\u9762\u7684if\u8bed\u53e5\u5931\u8d25\u8bf4\u660eCN\u540e\u9762\u8fd8\u6709\u7ed3\u70b9SN\uff0c\u5982\u679cPN\u5904\u4e8e\u9700\u8981\u901a\u77e5\u72b6\u6001\uff0c\u90a3\u4e48\u9700\u8981\u628aPN\u6307\u5411SN\uff0c\u5426\u5219\u5524\u9192CN\u7684\u540e\u7ee7\u3002<\/p>\n<pre><code class=\"java\">private void cancelAcquire(Node node) {\n    \/\/ \u5982\u679c\u7ed3\u70b9\u662fnull\u5219\u5ffd\u7565\n    if (node == null)\n        return;\n\n    node.thread = null;\n\n    \/\/ \u8df3\u8fc7\u5df2\u53d6\u6d88\u7684\u524d\u9a71\n    Node pred = node.prev;\n    while (pred.waitStatus &gt; 0)\n        node.prev = pred = pred.prev;\n\n    \/\/ predNext\u662f\u9700\u8981\u79fb\u9664\u7684\u7ed3\u70b9\u3002\u5982\u679c\u4e0d\u662f\uff0cCAS\u5c06\u5931\u8d25\uff0c\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\n    \/\/ \u6211\u4eec\u4e0e\u5176\u4ed6\u7684\u53d6\u6d88\u6216\u4fe1\u53f7\u7ade\u4e89\u5931\u8d25\uff0c\u4e0d\u9700\u8981\u66f4\u591a\u7684\u64cd\u4f5c\u3002\n    \/\/ \uff08\u4e5f\u5c31\u662f\u8bf4\uff0c\u901a\u8fc7predNext\u6765\u611f\u77e5\u5176\u4ed6\u7684\u53d6\u6d88\u6216\u4fe1\u53f7\u64cd\u4f5c\uff09\n    Node predNext = pred.next;\n\n    \/\/ \u7528\u65e0\u6761\u4ef6\u7684\u5199\u66ff\u4ee3CAS\u64cd\u4f5c\uff0c\u5728\u8fd9\u4e2a\u539f\u5b50\u64cd\u4f5c\u540e\uff0c\u5176\u4ed6\u7684\u7ed3\u70b9\u53ef\u4ee5\u8df3\u8fc7\u8fd9\u4e2a\u7ed3\u70b9\u3002\n    \/\/ \u5728\u8fd9\u4e4b\u524d\uff0c\u6211\u4eec\u4e0d\u53d7\u5176\u4ed6\u7ebf\u7a0b\u7684\u5e72\u6270\u3002\n    node.waitStatus = Node.CANCELLED;\n\n    if (node == tail &amp;&amp; compareAndSetTail(node, pred)) {\n      \/\/ \u5982\u679c\u5904\u4e8e\u94fe\u5c3e\uff0c\u76f4\u63a5\u79fb\u9664\uff0c\u518d\u4fee\u590d\u524d\u9a71\u7684\u8fde\u63a5\u5173\u7cfb\n        compareAndSetNext(pred, predNext, null);\n               \/\/ \u5982\u679c\u5931\u8d25\u4e86\uff0c\u8bf4\u660e\u6709\u5176\u4ed6\u7ebf\u7a0b\u7684\u53d6\u6d88\/\u4fe1\u53f7\u64cd\u4f5c\u79fb\u9664\u4e86predNext\n    } else {\n        \/\/ \u8bf4\u660e\u6709node\u6709\u540e\u7ee7\u3002\u7528\u524d\u9a71\u7684next\u6307\u9488\u6307\u5411\u5b83\uff0c\u8fd9\u6837\u5b83\u4f1a\u5f97\u5230\uff08signal\uff09\u3002\n        \/\/ \u5426\u5219\u5524\u9192\u5b83\u6765\u4f20\u64ad\u3002\n        int ws;\n        if (pred != head &amp;&amp;\n            ((ws = pred.waitStatus) == Node.SIGNAL ||\n             (ws &lt;= 0 &amp;&amp; compareAndSetWaitStatus(pred, ws, Node.SIGNAL))) &amp;&amp;\n            pred.thread != null) {\n \/\/ if\u6761\u4ef6\u6210\u7acb\uff0c\u8bf4\u660enode\u6709\u4e00\u4e2a\u9700\u8981signal\u7684\u524d\u9a71\uff0c\u8ba9\u8fd9\u4e2a\u524d\u9a71\u6307\u5411node\u7684\u540e\u7ee7\uff0c\u8fd9\u6837\u4f20\u64ad\u7684\u94fe\u662f\u5b8c\u6574\u7684\u3002\n            Node next = node.next;\n            if (next != null &amp;&amp; next.waitStatus &lt;= 0)\n                compareAndSetNext(pred, predNext, next); \/\/ \u540c\u4e0a\n        } else {\n             \/\/ node\u6ca1\u6709\u9700\u8981signal\u7684\u524d\u9a71\uff0c\u901a\u77e5\u540e\u7ee7\u7ed3\u70b9\n            unparkSuccessor(node);\n        }\n\n        node.next = node; \/\/ help GC\n    }\n}\n<\/code><\/pre>\n<h3>\u5524\u9192\u540e\u7ee7<\/h3>\n<pre><code class=\"java\">private void unparkSuccessor(Node node) {\n    \/*\n     * \u5982\u679cstatus\u662f\u8d1f\u7684\uff08\u6bd4\u5982\uff0c\u53ef\u80fd\u9700\u8981\u4fe1\u53f7\uff09\u5c1d\u8bd5\u6e05\u9664\u9884\u671f\u7684\u4fe1\u53f7\u3002\n     * \u5982\u679c\u8fd9\u5931\u8d25\u4e86\u6216status\u88ab\u5176\u4ed6\u7b49\u5f85\u7ebf\u7a0b\u4fee\u6539\u4e5f\u662f\u6ca1\u5173\u7cfb\u7684\u3002\n     *\/\n    int ws = node.waitStatus;\n    if (ws &lt; 0)\n        compareAndSetWaitStatus(node, ws, 0);\n\n    \/*\n     * \u51c6\u5907unpark\u7684\u7ebf\u7a0b\u5728\u540e\u7ee7\u91cc\u6301\u6709\uff0c\u4e00\u822c\u5c31\u662f\u4e0b\u4e00\u4e2a\u7ed3\u70b9\u3002\n     * \u4f46\u5982\u679c\u88ab\u53d6\u6d88\u6216\u662f\u7a7a\uff0c\u4ecetail\u5411\u540e\u904d\u5386\u6765\u627e\u5230\u5b9e\u9645\u7684\u975e\u53d6\u6d88\u540e\u7ee7\u3002\n     *\/\n    Node s = node.next;\n    if (s == null || s.waitStatus &gt; 0) {\n      \/\/ \u6ca1\u6709\u76f4\u63a5\u540e\u7ee7\u6216\u76f4\u63a5\u540e\u7ee7\u4e0d\u9700\u8981\u901a\u77e5\n        s = null;\n\n        \/\/ \u4ecetail\u5411\u540e\u904d\u5386\uff0c\u67e5\u627e\u9700\u8981\u901a\u77e5\u7684\u7ed3\u70b9\n        for (Node t = tail; t != null &amp;&amp; t != node; t = t.prev)\n             \/\/ \u627e\u5230\u4e00\u4e2a\u540e\u4e0d\u8df3\u51fa\u5faa\u73af\u662f\u4e3a\u4e86\u627e\u5230\u6700\u8001\u7684\u9700\u8981\u901a\u77e5\u7684\u7ed3\u70b9\u3002\n            if (t.waitStatus &lt;= 0)\n                s = t;\n    }\n    if (s != null) \/\/ \u7ed3\u70b9\u4e0d\u4e3anull\uff0c\u5524\u9192\u540e\u7ee7\u7684\u7b49\u5f85\u7ebf\u7a0b\n        LockSupport.unpark(s.thread);\n}\n<\/code><\/pre>\n<h3>\u91ca\u653e\u72ec\u5360\u7684\u8d44\u6e90<\/h3>\n<p>\u6b64\u65b9\u6cd5\u53ef\u4ee5\u7528\u6765\u5b9e\u73b0<code>Lock.unlock()<\/code>\u65b9\u6cd5\u3002<\/p>\n<pre><code class=\"java\">public final boolean release(int arg) {\n    if (tryRelease(arg)) {\n        Node h = head;\n        if (h != null &amp;&amp; h.waitStatus != 0) \n            unparkSuccessor(h);\n        return true ;\n    }\n    return false;\n}\n<\/code><\/pre>\n<h3>acquireInterruptibly<\/h3>\n<p>acquire\u8fc7\u7a0b\u4e2d\u68c0\u6d4b\u4e2d\u65ad\u5219\u53d6\u6d88acquire\u3002<\/p>\n<p>\u4e2d\u65ad\u5e76\u4e0d\u662f\u7acb\u5373\u7ec8\u6b62acquire\u8fc7\u7a0b\uff0c\u800c\u662f\u5728\u7ebf\u7a0b\u6062\u590d\u6267\u884c\u624d\u80fd\u68c0\u6d4b\u5230\u4e2d\u65ad\u624d\u7ec8\u6b62\u3002\u7ebf\u7a0b\u603b\u662f\u4f1a\u6062\u590d\u6267\u884c\uff0c\u56e0\u4e3a\u5b83\u7684\u524d\u9a71\u4f1a\u901a\u77e5\u5b83\u3002<\/p>\n<pre><code class=\"java\">public final void acquireInterruptibly(int arg)\n        throws InterruptedException {\n    if (Thread.interrupted())\n        throw new InterruptedException();\n    if (!tryAcquire(arg))\n        doAcquireInterruptibly(arg);\n}\n\n\/\/ \u8fd9\u4e2a\u65b9\u6cd5\u4e0eacquireQueued\u57fa\u672c\u4e00\u6837\uff0c\u53ea\u4e0d\u8fc7\u662f\u68c0\u6d4b\u5230\u4e2d\u65ad\u65f6\u5219\u629b\u51fa\u5f02\u5e38\u3002\nprivate void doAcquireInterruptibly(int arg)\n    throws InterruptedException {\n\n       \/\/ \u5148\u6dfb\u52a0\u7ed3\u70b9\u5230\u7b49\u5f85\u961f\u5217\uff0c\u8fd4\u56de\u65b0\u7ed3\u70b9\n    final Node node = addWaiter(Node.EXCLUSIVE);\n    boolean failed = true;\n    try {\n        for (;;) {\n            final Node p = node.predecessor();\n            \/\/ \u5982\u679c\u524d\u9a71\u662f\u5934\u7ed3\u70b9\uff0c\u5c1d\u8bd5\u83b7\u53d6\u3002\u8fd9\u662f\u4e3a\u4e86\u5c3d\u5feb\u83b7\u53d6\u3002\n            if (p == head &amp;&amp; tryAcquire(arg)) {\n                setHead(node);\n                p.next = null; \/\/ help GC\n                failed = false;\n                return;\n            }\n            if (shouldParkAfterFailedAcquire(p, node) &amp;&amp;\n                parkAndCheckInterrupt())\n                throw new InterruptedException();\n        }\n    } finally {\n        if (failed)\n            cancelAcquire(node);\n    }\n}\n<\/code><\/pre>\n<h3>\u5e26\u8d85\u65f6\u7684\u83b7\u53d6\uff1atryAcquireNanos<\/h3>\n<p>\u5982\u679c\u7ebf\u7a0b\u5728\u6307\u5b9a\u7684\u65f6\u95f4\u5185\u52a0\u9501\u5931\u8d25\u6216\u5728\u6307\u5b9a\u65f6\u95f4\u5185\u88ab\u4e2d\u65ad\u5219\u7ec8\u6b62\u52a0\u9501\u5c1d\u8bd5\u3002\u5b9e\u73b0\u5e26\u8d85\u65f6\u7684\u903b\u8f91\u662f\uff1a\u9996\u5148\u8fdb\u884c\u83b7\u53d6\uff0c\u6210\u529f\u5219\u76f4\u63a5\u8fd4\u56de\uff0c\u5931\u8d25\u5219park\u6307\u5b9a\u7684\u65f6\u95f4\uff0c\u5230\u671f\u540e\u518d\u6b21\u8fdb\u884c\u83b7\u53d6\uff0c<\/p>\n<pre><code class=\"java\">public final boolean tryAcquireNanos(int arg, long nanosTimeout)\n        throws InterruptedException {\n    if (Thread.interrupted())\n        throw new InterruptedException();\n    return tryAcquire(arg) || \/\/ \u9996\u5148\u5c1d\u8bd5\u83b7\u53d6\uff0c\u662f\u5426\u516c\u5e73\u53d6\u51b3\u4e8e\u5b50\u7c7b\u7684tryAcquire\u5b9e\u73b0\n        doAcquireNanos(arg, nanosTimeout);\/\/ \u7b2c\u4e00\u6b21\u5c1d\u8bd5\u5931\u8d25\uff0c\u8fdb\u5165\u5e38\u89c4\u6d41\u7a0b\n}\n\nprivate boolean doAcquireNanos(int arg, long nanosTimeout)\n    throws InterruptedException {\n    long lastTime = System.nanoTime();\n    final Node node = addWaiter(Node.EXCLUSIVE);\n    boolean failed = true;\n    try {\n        for (;;) {\n            final Node p = node.predecessor();\n            if (p == head &amp;&amp; tryAcquire(arg)) {\/\/ \u5904\u4e8e\u5bf9\u5934\uff0c\u518d\u6b21\u5c1d\u8bd5\u83b7\u53d6\n                setHead(node);\n                p.next = null; \/\/ help GC\n                failed = false;\n                return true ;\n            }\n            if (nanosTimeout &lt;= 0)\/\/ \u8d85\u65f6\u4e86\n                return false ;\n            if (shouldParkAfterFailedAcquire(p, node) &amp;&amp;\/\/ \u5224\u65ad\u662f\u5426\u9700\u8981\u7b49\u5f85\n                nanosTimeout &gt; spinForTimeoutThreshold) \/\/ \u53ef\u7528\u4e8eacquire\u7684\u5269\u4f59\u65f6\u95f4\u5927\u4e8e\u6307\u5b9a\u7684\u9600\u503c\n                \/\/ \u8fd9\u91cc\u4e4b\u6240\u4ee5\u8981\u5927\u4e8e\u4e00\u4e2a\u7ed9\u5b9a\u7684\u9600\u503c\u624dpark\u7ebf\u7a0b\uff0c\u662f\u56e0\u4e3apark\u7ebf\u7a0b\u6d89\u53ca\u4e0a\u4e0b\u6587\u5207\u6362\uff0c\n                \/\/ \u5982\u679c\u7b49\u5f85\u65f6\u95f4\u5f88\u77ed\uff0c\u90a3\u4e48\u4e0a\u4e0b\u6587\u5207\u6362\u7684\u4ee3\u4ef7\u4f1a\u5927\u4e8e\u81ea\u65cb\u7684\u4ee3\u4ef7\u3002\n                \/\/ \u6240\u4ee5\u5982\u679c\u7b49\u5f85\u65f6\u95f4\u5f88\u77ed\uff0c\u7ebf\u7a0b\u8fdb\u884c\u81ea\u65cb\u3002\n\n                \/\/ if\u7684\u4e24\u4e2a\u6761\u4ef6\u90fd\u6ee1\u8db3\uff0c\u8fdb\u5165\u7b49\u5f85\u3002\n                LockSupport.parkNanos( this, nanosTimeout);\n\n            \/\/ \u7ebf\u7a0b\u7b49\u5f85\u5230\u671f\u81ea\u52a8\u9192\u6765\uff0c\u7ee7\u7eed\n            long now = System.nanoTime();\n            nanosTimeout -= now - lastTime; \/\/ \u8ba1\u7b97\u65b0\u7684\u5269\u4f59\u65f6\u95f4\n            lastTime = now;\n            if (Thread.interrupted())\n                throw new InterruptedException();\n\n            \/\/ \u8fd9\u91cc\u4e0d\u7acb\u5373\u5224\u65ad\u5269\u4f59\u65f6\u95f4\u662f\u5426&lt;=0\u662f\u4e3a\u4e86\u5728\u7ebf\u7a0b\u9192\u6765\u540e\u518d\u6b21\u83b7\u53d6\n        }\n    } finally {\n        if (failed)\n            cancelAcquire(node);\n    }\n}\n<\/code><\/pre>\n<p>\u5230\u8fd9\u91cc\uff0c\u5df2\u5b8c\u6574\u5c55\u793a\u4e86\u7b49\u5f85\u961f\u5217\u7684\u7ba1\u7406\uff08\u6dfb\u52a0\u7ed3\u70b9\u3001\u79fb\u9664\u53d6\u6d88\u7ed3\u70b9\uff09\u3001\u72ec\u5360\u6a21\u5f0f\u4e0b\u7684acquire\u64cd\u4f5c\u3001acquire\u4e2d\u65ad\u53d6\u6d88\u3001\u524d\u9a71\u5982\u4f55\u901a\u77e5\u540e\u7ee7\u3001\u5982\u4f55\u5728\u6307\u5b9a\u65f6\u95f4\u5185acquire\u3002<\/p>\n<hr\/>\n<p>\u6b22\u8fce\u5173\u6ce8\u6211\u7684\u5fae\u4fe1\u516c\u4f17\u53f7: <strong>coderbee\u7b14\u8bb0<\/strong>\uff0c\u53ef\u4ee5\u66f4\u53ca\u65f6\u56de\u590d\u4f60\u7684\u8ba8\u8bba\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"258\" height=\"258\" src=\"https:\/\/coderbee.net\/wp-content\/uploads\/2019\/01\/coderbee-note.jpg\" class=\"alignnone size-full wp-image-1707\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u961f\u5217\u7ed3\u70b9 Node\u7c7b\u578b\u7684waitStatus\u3001prev\u3001next \u5b57\u6bb5\u90fd\u7528vol &hellip; <a href=\"https:\/\/coderbee.net\/index.php\/concurrent\/20131209\/614\">\u7ee7\u7eed\u9605\u8bfb <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[121],"tags":[125,122,231,110],"_links":{"self":[{"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/posts\/614"}],"collection":[{"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/comments?post=614"}],"version-history":[{"count":12,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/posts\/614\/revisions"}],"predecessor-version":[{"id":664,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/posts\/614\/revisions\/664"}],"wp:attachment":[{"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/media?parent=614"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/categories?post=614"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/tags?post=614"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}