How Eclipse / IDEA / etc works. does the debugger get information about the values ​​of local variables and watch values?

Question

I always thought that varibales map to stack places when your Java source is compiled; in addition, they may include information about variable names and their scope in class files, but this is optional AFAIK.

The question is, how do my Eclipse / IDEA IDEs allow me to set a clock expression containing the name of a local variable? It's hard for me to understand :)

Answer 1

IDE JavaTM Platform Debugger Architecture (JPDA).
, Java (JVM TI), JDK5. JVMPI ( Java).

JVMTI Watched Field SetFieldModificationWatch.

: RFE : 4228507.
, , BCI ( ) (, TPTP Eclipse ).