Hi,
On Windows x64 such tools as jconsole are unable to connect to 32bit JVM if
they are launched on 64bit JVM and vice versa (32bit JVM can't attach 64bit
JVM).
Trying to figure out the reason not to attach JVM of different bitness, I can
see that connection is done by injecting some native piece of code to target
JVM.
jdk/src/windows/native/sun/tools/attach/WindowsVirtualMachine.c
Why did we follow this way? Wouldn't it be simpler and better to use, for
example, named pipe with name like \\.\pipe\java_pid${pid}, which target JVM
would create during initialization and then read; and attaching JVM would just
send commands to?
Thanks,
Dmytro
