BlackBerry - Get the current process ID

Question

I am reading Blackberry - How to get the process id of a background application , but I'm not sure I understand it correctly. The following code gets the identifier of the foreground process;

ApplicationManager.getApplicationManager().getForegroundProcessId()

I have two processes that execute the same code for the connection, I want to register a process that made calls along with all my usual registration data in order to better understand how the thread works.

Is it possible to get an identifier for the process that is currently running the code? One process is in the foreground (user interface process), and the other is in the background, but both use the same connection library shared by the runtime repository.

Thanks in advance!

Woof

Answer 1

So, you have three modules: application, library and service.
You need to get the descriptor by the name of the module, and then get the process ID.

UPDATE1

String moduleName = "application";
int handle = CodeModuleManager.getModuleHandle(moduleName);
ApplicationDescriptor[] descriptors = CodeModuleManager
.getApplicationDescriptors(handle);
if (descriptors.length > 0 && descriptors[0] != null) {
    ApplicationManager.getApplicationManager().getProcessId(descriptors[0]);
}

Then, to record which module uses the library, use

Application.getApplication().getProcessId();

inside library methods. I think it is better to implement registration inside the library.
When you get the application process identifier from the library code, you can compare it with the identifier found by the name of the module, and then you will find out which module uses the library code.
UPDATE2
alt text http://img138.imageshack.us/img138/23/eventlog.jpg
library module code:

package library;

import net.rim.device.api.system.Application;
import net.rim.device.api.system.ApplicationDescriptor;
import net.rim.device.api.system.ApplicationManager;
import net.rim.device.api.system.CodeModuleManager;
import net.rim.device.api.system.EventLogger;

public class Logger {
    // "AppLibSrvc" converted to long
    long guid = 0xd4b6b5eeea339daL;

    public Logger() {
        EventLogger.register(guid, "AppLibSrvc", EventLogger.VIEWER_STRING);
    }

    public void log(String message) {
        EventLogger.logEvent(guid, message.getBytes());
    }

    public void call() {
        log("Library is used by " + getModuleName());
    }

    private String getModuleName() {
        String moduleName = "";
        String appModuleName = "application";
        int appProcessId = getProcessIdByName(appModuleName);

        String srvcModuleName = "service";
        int srvcProcessId = getProcessIdByName(srvcModuleName);

        int processId = Application.getApplication().getProcessId();

        if (appProcessId == processId)
            moduleName = appModuleName;
        else if (srvcProcessId == processId)
            moduleName = srvcModuleName;
        return moduleName;
    }

    protected int getProcessIdByName(String moduleName) {
        int processId = -1;
        int handle = CodeModuleManager.getModuleHandle(moduleName);
        ApplicationDescriptor[] descriptors = CodeModuleManager
                .getApplicationDescriptors(handle);
        if (descriptors.length > 0 && descriptors[0] != null) {
            processId = ApplicationManager.getApplicationManager()
                    .getProcessId(descriptors[0]);
        }
        return processId;
    }
}

:

package application;

import java.util.Timer;
import java.util.TimerTask;

import library.Logger;

import net.rim.device.api.ui.UiApplication;
import net.rim.device.api.ui.container.MainScreen;

public class App extends UiApplication {

    public App() {
        pushScreen(new Scr());
    }

    public static void main(String[] args) {
        App app = new App();
        app.enterEventDispatcher();
    }
}

class Scr extends MainScreen {
    public Scr() {
        Timer timer = new Timer();
        TimerTask task = new TimerTask() {
            public void run() {
                Logger logger = new Logger();
                logger.call();
            }
        };
        timer.schedule(task, 3000, 3000);
    }
}

:

package service;

import java.util.Timer;
import java.util.TimerTask;

import library.Logger;
import net.rim.device.api.system.Application;

public class App extends Application {

    public App() {
        Timer timer = new Timer();
        TimerTask task = new TimerTask() {
            public void run() {
                Logger logger = new Logger();
                logger.call();
            }
        };
        timer.schedule(task, 3000, 3000);
    }

    public static void main(String[] args) {
        App app = new App();
        app.enterEventDispatcher();
    }
}