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java常见锁Reentrantlock，synchronized，SpinLock，ReadWriteLock

java公平锁和非公平锁（Reentrantlock）公平锁―是指多个线程按照申请锁的顺序来获取锁，类似排队打饭，先来后到。非公平锁是指多个线程获取锁的顺序并不是按照申请锁的顺序，有可能后中请的线程比先中请的线程优先获取锁。在高并发的情况下，有可能会造成优先级反转或者饥饿现象并发包中Reentran...

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Java中的ReentrantLock和synchronized两种锁机制的对比

原文：http://www.ibm.com/developerworks/cn/java/j-jtp10264/index.html 多线程和并发性并不是什么新内容，但是 Java 语言设计中的创新之一就是，它是第一个直接把跨平台线程模型和正规的内存模型集成到语言中的主流语言。核心类库包含一个&nb...

Java中的ReentrantLock和synchronized两种锁定机制的对比

问题：多个访问线程将需要写入到文件中的数据先保存到一个队列里面，然后由专门的写出线程负责从队列中取出数据并写入到文件中。 http://blog.csdn.net/top_code/article/details/8896047 Java中的ReentrantLock和synchron...

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