* {@code (group, target, gname)} ,where {@code gname} is a newly generated * name. Automatically generated names are of the form * {@code "Thread-"+}<i>n</i>, where <i>n</i> is an integer. * * @param group * the
4、使用所谓的非对称Dekker同步技术,通过与Java线程握手来消除一些内存障碍。 例如,G1和CMS里使用的“条件卡标记码”(conditional card mark code),将不再需要“内存屏障”这个东东。这样的话,G1发送的“写屏障(write barrier)”就可以被优化, 并且那些尝试要规避“内存屏障”的分支也可以被删除了。 note:以上只是...
1packagejava.lang;2/**3* Represents a command that can be executed. Often used to run code in a4* different {@linkThread}.5*/6publicinterfaceRunnable {7publicvoidrun();8} Thread Class View Code Thread Local View Code Thead Group View Code VMThread View Code http://docjar.com/docs/ap...
Waiting for Monitor Entry 和 in Object.wait():The thread is waiting to get the lock for an object (some other thread may be holding the lock). This happens if two or more threads try to execute synchronized code. Note that the lock is always for an object and not for individual method...
potentially resulting in arbitrary behavior. Many uses ofstopshould be replaced by code that simply modifies some variable to indicate that the target thread should stop running. The target thread should check this variable regularly, and return from its run method in an orderly fashion if the var...
It is also possible to synchronize any arbitrary block of code on any given object: for more details, see the section on the Java synchronized keyword. Explicit locksThe built-in synchronization mechanism has some limitations. For example, a thread will potentially block forever waiting to acquire...
Returns the approximate accumulated elapsed time (in milliseconds) that the thread associated with this ThreadInfo has waited for notification since thread contention monitoring is enabled. booleanisInNative() Tests if the thread associated with this ThreadInfo is executing native code via the Java Nati...
(J=compiled Java code, j=interpreted, Vv=VM code, C=native code) V [libjvm.so+0xa333a6] ShenandoahUpdateRefsClosure::do_oop(oopDesc**)+0x26 V [libjvm.so+0x91ddd5] nmethod::oops_do(OopClosure*, bool)+0x135 V [libjvm.so+0x6aa3f2] CodeBlobToOopClosure::do_code_blob(CodeBlob...
(J=compiled Java code, j=interpreted, Vv=VM code, C=native code) V [libjvm.so+0xa2e12d] void ShenandoahConcurrentMark::mark_loop_work<ShenandoahMarkRefsClosure, true>(ShenandoahMarkRefsClosure*, unsigned short*, unsigned int, ShenandoahTaskTerminator*)+0x19d V [libjvm.so+0xa36c59] void...
-javaagent:/path/to/transmittable-thread-local-2.x.x.jar 注意: Agent修改是JDK的类,类中加入了引用TTL的代码,所以TTL Agent的Jar要加到bootclasspath上。 Java命令行示例如下: java -Xbootclasspath/a:transmittable-thread-local-2.0.0.jar \ -javaagent:transmittable-thread-local-2.0.0.jar \ -cp cl...