Search code examples
javawindowsdebuggingandroid-emulatorjdb

"Failed to attach to the remote VM" connecting jdb to the android emulator on Windows

I’ve been trying to connect jdb to the android emulator for a little while, and have been met repeatedly with: 

jdb -sourcepath ./src -attach localhost:8700

java.io.IOException: shmemBase_attach failed: The system cannot find the file specified
        at com.sun.tools.jdi.SharedMemoryTransportService.attach0(Native Method)
        at com.sun.tools.jdi.SharedMemoryTransportService.attach(SharedMemoryTransportService.java:90)
        at com.sun.tools.jdi.GenericAttachingConnector.attach(GenericAttachingConnector.java:98)
        at com.sun.tools.jdi.SharedMemoryAttachingConnector.attach(SharedMemoryAttachingConnector.java:45)
        at com.sun.tools.example.debug.tty.VMConnection.attachTarget(VMConnection.java:358)
        at com.sun.tools.example.debug.tty.VMConnection.open(VMConnection.java:168)
        at com.sun.tools.example.debug.tty.Env.init(Env.java:64)
        at com.sun.tools.example.debug.tty.TTY.main(TTY.java:1010)

Fatal error:
Unable to attach to target VM.

Not so great. What's the best way of getting round this? I'm running on Windows 7 64bit.

Solution

  • Currently this is working for me -- making a socket rather than a shared memory connection.

    >jdb –sourcepath .\src -connect com.sun.jdi.SocketAttach:hostname=localhost,port=8700

    Beforehand you need to do some setup -- for example, see this set of useful details on setting up a non-eclipse debugger. It includes a good tip for setting your initial breakpoint -- create or edit a jdb.ini file in your home directory, with content like: 

    stop at com.mine.of.package.some.AClassIn:14

    and they'll get loaded and deferred until connection.

    edit: forgot to reference Herong Yang's page.