java线程中的线程状态
green thread scheduling
Not all operating systems, the ancient Microsoft Windows 3.1 perating system, for example, support threads. For such systems, Sun Microsystems can design a JVM that divides its sole thread of execution into multiple threads. The JVM (not the underlying platform's operating system) supplies the threading logic and contains the thread scheduler. JVM threads are green threads
priority inheritance
The thread scheduler silently raises the priority of the thread holding the lock when a higher-priority thread requests the lock
native thread scheduling
Most JVMs rely on the underlying operating system (such as Linux or Microsoft Windows XP) to provide a thread scheduler. When an operating system handles thread scheduling, the threads are native threads
time-slicing
prevent processor starvation of equal-priority threads.
yield()
the thread scheduler keeps the currently running thread in the runnable state, but (usually) picks another thread of equal priority to be the currently running thread, unless a higher-priority thread has just been made runnable, in which case the higher-priority thread becomes the currently running thread.If you have no higher-priority thread and no other equal-priority threads, the thread scheduler immediately reschedules the thread calling yield() as the currently running thread.
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