java线程锁有几种 java线程的几种转态
java\u7ebf\u7a0b\u9501\u6709\u51e0\u79cd\u9501\u7684\u7ade\u4e89\u53ea\u53d1\u751f\u5728\u591a\u4e2a\u7ebf\u7a0b\u4e4b\u95f4\uff0c\u4ee3\u7801\u4e2d\u4e24\u4e2asynchronized(a)\u5728\u540c\u4e00\u4e2a\u7ebf\u7a0b\u91cc\u9762\uff08\u800c\u4e14\u662f\u4e00\u5c42\u5305\u7740\u53e6\u4e00\u5c42\uff0c\u91cc\u9762\u7684synchronized(a)\u53d8\u5f97\u6beb\u65e0\u610f\u4e49\uff09\uff0c\u6240\u4ee5\u80fd\u6267\u884c
public enum State {
/**
* Thread state for a thread which has not yet started.
*/
NEW,
/**
* Thread state for a runnable thread. A thread in the runnable
* state is executing in the Java virtual machine but it may
* be waiting for other resources from the operating system
* such as processor.
*/
RUNNABLE,
/**
* Thread state for a thread blocked waiting for a monitor lock.
* A thread in the blocked state is waiting for a monitor lock
* to enter a synchronized block/method or
* reenter a synchronized block/method after calling
* {@link Object#wait() Object.wait}.
*/
BLOCKED,
2、自旋锁的其他种类
3、阻塞锁
4、可重入锁
5、读写锁
6、互斥锁
7、悲观锁
8、乐观锁
9、公平锁
10、非公平锁
11、偏向锁
12、对象锁
13、线程锁
14、锁粗化
15、轻量级锁
16、锁消除
17、锁膨胀
18、信号量
对象锁，方法锁，类锁
绛旓細Java涓殑閿佷富瑕佸寘鎷瑂ynchronized閿佸拰JUC鍖呬腑鐨勯攣锛岃繖浜涢攣閮芥槸閽堝鍗曚釜JVM瀹炰緥涓婄殑閿侊紝瀵逛簬鍒嗗竷寮忕幆澧冨鏋滄垜浠渶瑕佸姞閿佸氨鏄惧緱鏃犺兘涓哄姏銆傚湪鍗曚釜JVM瀹炰緥涓婏紝閿佺殑绔炰簤鑰呴氬父鏄竴浜涗笉鍚岀殑绾跨▼锛岃屽湪鍒嗗竷寮忕幆澧冧腑锛岄攣鐨勭珵浜夎呴氬父鏄竴浜涗笉鍚岀殑绾跨▼鎴栬呰繘绋嬨傚浣曞疄鐜板湪鍒嗗竷寮忕幆澧冧腑瀵逛竴涓璞¤繘琛屽姞閿佸憿锛熺瓟妗堝氨...
绛旓細c)tryLock(long timeout,TimeUnit unit)锛 濡傛灉鑾峰彇浜嗛攣瀹氱珛鍗宠繑鍥瀟rue锛屽鏋滃埆鐨绾跨▼姝ｆ寔鏈夐攣锛屼細绛夊緟鍙傛暟缁欏畾鐨勬椂闂达紝鍦ㄧ瓑寰呯殑杩囩▼涓紝濡傛灉鑾峰彇浜嗛攣瀹氾紝灏辫繑鍥瀟rue锛屽鏋滅瓑寰呰秴鏃讹紝杩斿洖false锛沝) lockInterruptibly:濡傛灉鑾峰彇浜嗛攣瀹氱珛鍗宠繑鍥烇紝濡傛灉娌℃湁鑾峰彇閿佸畾锛屽綋鍓嶇嚎绋嬪浜庝紤鐪犵姸鎬侊紝鐩村埌鎴栬呴攣瀹氾紝鎴栬...
绛旓細鍏堕棿灏辩畻澶栭儴璋冪敤浜唅nterrupt()锛屽惊鐜篃浼氱户缁蛋涓嬪幓銆備竴鐩村埌褰撳墠绾跨▼鑾峰彇鍒颁簡杩欎釜閿侊紝姝ゆ椂鎵嶅鐞唅nterrupt鏍囧織锛岃嫢鏈夛紝鍒欐墽琛 Thread.currentThread().interrupt()锛岀粨鏋滃浣曞彇鍐充簬澶栧眰鐨勫鐞嗐俵ock()鏈缁堟墽琛岀殑鏂规硶濡備笅:[java] view plain copyfinal boolean acquireQueued(final Node node, int arg) { ...
绛旓細2銆佽繍琛屼腑(Running)锛氳繘绋嬫鍦ㄦ墽琛绾跨▼鐨勪唬鐮併3銆佺瓑寰呬腑(Waiting):绾跨▼澶勪簬闃诲鐨勭姸鎬侊紝绛夊緟澶栭儴鐨勫鐞嗙粨鏉熴4銆佺潯鐪犱腑(Sleeping)锛氱嚎绋嬭寮哄埗鐫＄湢銆5銆両/O闃诲(BlockedonI/O)锛氱瓑寰匢/O鎿嶄綔瀹屾垚銆6銆佸悓姝ラ樆濉(BlockedonSynchronization)锛氱瓑寰呰幏鍙栭攣銆7銆佹浜(Dead)锛氱嚎绋嬪畬鎴愪簡鎵ц銆
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绛旓細閫氳繃鏌ョ湅婧愪唬鐮侊紝浼氬彂鐜版湁杩欐牱鐨勪竴涓柟娉曪細涓婇潰鐨勬柟娉曪紝瀹炵幇浜嗕竴涓柊鐨勮绾跨▼鑾峰彇閿佺殑涓柇锛屽畠浼氳鍙栫瓑寰呴槦鍒椾腑涓嬩竴涓瓑寰呴攣鐨勭嚎绋嬶紝濡傛灉瀹冩槸鑾峰彇鍐欓攣鐨勭嚎绋嬶紝閭ｄ箞姝ゆ柟娉曡繑鍥炰负鐪燂紝璋冪敤瀹冪殑绋嬪簭浼氭妸杩欎釜璇曞浘鑾峰彇璇婚攣鐨勭嚎绋嬪姞鍏ュ埌绛夊緟闃熷垪锛屼粠鑰岀粓姝簡璇荤嚎绋嬩竴鐩撮兘鍦ㄥ崰鏈夐攣鐨勬儏鍐点
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绛旓細Jstack鐨勮緭鍑轰腑锛Java绾跨▼鐘舵佷富瑕佹槸浠ヤ笅鍑犵锛歊UNNABLE 绾跨▼杩愯涓垨I/O绛夊緟 BLOCKED 绾跨▼鍦ㄧ瓑寰卪onitor閿(synchronized鍏抽敭瀛)TIMED_WAITING 绾跨▼鍦ㄧ瓑寰呭敜閱掞紝浣嗚缃簡鏃堕檺 WAITING 绾跨▼鍦ㄦ棤闄愮瓑寰呭敜閱 1锛 璁╃嚎绋嬩竴鐩村浜嶳UNNABLE public static void runnable() { long i = 0; while (true) {...
绛旓細BLOCKED鏄寚绾跨▼姝ｅ湪绛夊緟鑾峰彇閿侊紱WAITING鏄寚绾跨▼姝ｅ湪绛夊緟鍏朵粬绾跨▼鍙戞潵鐨勯氱煡锛坣otify锛夛紝鏀跺埌閫氱煡鍚庯紝鍙兘浼氶『搴忓悜鍚庢墽琛岋紙RUNNABLE锛夛紝涔熷彲鑳戒細鍐嶆鑾峰彇閿侊紝杩涜岃闃诲浣忥紙BLOCKED锛
绛旓細Java绾跨▼姝婚攣闇瑕佸浣曡В鍐筹紝杩欎釜闂涓鐩村湪鎴戜滑涓嶆柇鐨勪娇鐢ㄤ腑闇瑕佸彧鏈変笉鏂殑鍏抽敭銆備笉骞哥殑鏄紝浣跨敤涓婇攣浼氬甫鏉ュ叾浠栭棶棰樸傝鎴戜滑鏉ョ湅涓浜涘父瑙侀棶棰樹互鍙婄浉搴旂殑瑙ｅ喅鏂规硶锛 Java绾跨▼姝婚攣 Java绾跨▼姝婚攣鏄竴涓粡鍏哥殑澶氱嚎绋嬮棶棰橈紝鍥犱负涓嶅悓鐨勭嚎绋嬮兘鍦ㄧ瓑寰呴偅浜涙牴鏈笉鍙兘琚噴鏀剧殑閿侊紝浠庤屽鑷存墍鏈夌殑宸ヤ綔閮芥棤娉曞畬鎴愩傚亣璁炬湁...
