525
Bug:StampedLock鐨勪腑鏂梾棰桦镊碈PU鐖嗘弧-鍗氩-浜戞尔绀惧尯-阒块噷浜?
StampedLock浣滀负JAVA8涓嚭鐜扮殑鏂板瀷阌侊纴寰埚彲鑳藉湪澶у鏁板満鏅兘鍙互镟夸唬ReentrantReadWriteLock銆傚畠瀵逛簬璇?鍐欓兘鎻愪緵浜嗗洓涓帴鍙?鎹㈡垚write涓哄啓阌?锛?/p>
- readLock()
- tryReadLock()
- tryReadLock(long time, TimeUnit unit)
- readLockInterruptibly()
杩椤嚑涓柟娉曞搴旂殑璇箟涓猴细
- 銮峰彇璇婚挛锛堥樆濉烇纴涓嶅搷搴斾腑鏂级
- 銮峰彇璇婚挛锛堢珛鍗筹级
- 闄愭椂銮峰彇璇婚挛锛埚搷搴斾腑鏂级
- 銮峰彇璇婚挛锛堥樆濉烇纴鍝嶅簲涓柇锛?/li>
铹惰€屽湪readLock鏂规硶锛埚嵆涓嶅搷搴斾腑鏂级涓瓨鍦ㄩ梾棰?write鐨勭増链篃鏄?锛岃瀵烠PU浣跨敤鐜囷纴鎵ц浠ヤ笅浠ｇ爜锛?/div>
01 |
public听class听TestStampedLock {
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02 |
听听听听public听static听void听main(String[] args)听throws听InterruptedException{
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03 |
听听听听final听StampedLock lock =听new听StampedLock();
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04 |
听听听听new听Thread(){
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05 |
听听听听听听听public听void听run(){
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06 |
听听听听听听听long听readLong = lock.writeLock();
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07 |
听听听听听听听LockSupport.parkNanos(6100000000L);
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08 |
听听听听听听听lock.unlockWrite(readLong);
|
09 |
听听听听听}
|
10 |
听听听听}.start();
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11 |
听听听听Thread.sleep(100);
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12 |
听听听听for(听int听i =听0; i <听3; ++i)
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13 |
听听听听听听听new听Thread(new听OccupiedCPUReadThread(lock)).start();
|
14 |
听听听听}
|
15 |
听听听听private听static听class听OccupiedCPUReadThread听implements听Runnable{
|
16 |
听听听听听听听听private听StampedLock lock;
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17 |
听听听听听听听听public听OccupiedCPUReadThread(StampedLock lock){
|
18 |
听听听听听听听听听听听听this.lock = lock;
|
19 |
听听听听听听听听}
|
20 |
听听听听听听听听public听void听run(){
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21 |
听听听听听听听听听听听听Thread.currentThread().interrupt();
|
22 |
听听听听听听听听听听听听long听lockr = lock.readLock();
|
23 |
听听听听听听听听听听听听System.out.println(Thread.currentThread().getName() +听" get read lock");
|
24 |
听听听听听听听听听听听听lock.unlockRead(lockr);
|
25 |
听听听听听听听听}
|
26 |
听听听听}
|
27 |
} |
鍏埚紑钖竴涓嚎绋嬭幏鍙栧啓阌佸苟淇濇寔6绉掞纴鍐嶅紑钖笁涓甫镌€涓柇钟舵€佺殑绾跨▼铡昏幏鍙栬阌侊纸readLock鏂规硶锛夛纴缁撴灉鏄?涓牳蹇冭鍗犳嵁浜呜繎6绉掋€?/div>
铡熷洜鍦ㄤ簬娌℃湁浣跨敤淇濆瓨/澶嶅师涓柇钟舵€?/strong>鐨勬満鍒讹纴阃氲绷hack婧愮爜锛屾彃鍏ヤ缭瀛树腑鏂拰杩斿洖鍓嶆仮澶崭腑鏂殑鐩稿叧浠ｇ爜鍗冲彲淇锛?/div>
1 |
boolean听interrupted听=听false;
|
1 |
if(interrupted)
|
2 |
听听听听Thread.currentThread().interrupt();
|
3 |
return听ns;
|
1 |
if(Thread.interrupted()){
|
2 |
听听听听if(interruptible)
|
3 |
听听听听听听听听return听cancelWaiter(node, p,听true);
|
4 |
听听听听else
|
5 |
听听听听听听听听interrupted =听true;
|
6 |
} |
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最后更新：2017-05-23 18:02:56