YON

• Feb 15th, 2006

 

The Java Memory Model defines how threads interact through memory.

YON

• Feb 15th, 2006

 

Well what i feel about JMM isThe JavaMemoryModel allows the compiler and cache to take significant liberties with the order in which data is moved between a processor-specific cache/ register and main memory, unless the programmer has explicitly asked for certain visibility guarantees using synchronized or volatile. This means that in the absence of synchronization, memory operations can appear to happen in different orders from the perspective of different threads.A class defined without any synchronization:final class check1{ private int a = 0; private long b = 0; void set() { a = 1; b = -1; } boolean check() { return ((b == 0) || (b == -1 && a == 1)); }}

suresh.bandlamudi

 Profile Answers by suresh.bandlamudi Questions by suresh.bandlamudi

• Mar 11th, 2006

 

tha java memory model is a model it will defines how threads interact through memory