[英]IllegalStateException while attempting to enter synchronized block
What does it mean when a IllegalStateException is thrown when entering a synchronized block? 输入同步块时抛出IllegalStateException表示什么? I'm seeing this sometimes inside the run-method of a thread:
我有时在线程的运行方法中看到这种情况:
public void run() {
while (true) {
int n = 0;
synchronized (service) { // IllegalStateException
n = processPendingRequests();
}
/*
* If n > 0, we processed at least one element, in which case we
* immediately check the queue again until it was empty.
*/
if (n == 0) {
sleep();
continue;
}
}
}
Can the service
object cause the IllegalStateException
? service
对象可以引起IllegalStateException
吗? How? 怎么样?
According to the Java Language Specification , the "synchronized" statement doesn't throw an "IllegalStateException". 根据Java语言规范 ,“同步”语句不会引发“ IllegalStateException”。 Therefore, either the Language Specification is wrong, you're using a non-conforming JVM, or you've misinterpreted the behavior of your program -- as far as I can see.
因此,就我所知,语言规范是错误的,您使用的是不合格的JVM,还是您误解了程序的行为。
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