SIGSEGV problem

Question

Hi all,
I'm trying to create a program to access to a native library by JNI.
I need to use a varible among the different callings to the JNI functions (in the C++ side). This variable is a pointer to a data structure.
My problem is when the calling to the first function ends, I think that the JVM clenas the memory and cleans the data structure too.
Here is the code:
int pRobot; 
int pCon;
JNIEXPORT jint JNICALL Java_es_uji_robot_acromovi_mobile_natives_Base_connectBase (JNIEnv *env, jobject obj, jboolean sim) {
  ArRobot *rob = new ArRobot(); // Necessary to connect with ARIA
  Aria::init(Aria::SIGHANDLE_SINGLE);
  ArSimpleConnector *conn = new ArSimpleConnector(NULL,NULL);
  if (!conn->connectRobot(rob)) {
    printf("Could not connect to robot... exiting\n");
    Aria::shutdown();
  rob->runAsync(true);
  int  pRobot = (int)rob;
  pCon = (int)conn;
  return;
}  I want to mantain the reference to the ArRobot structure among the different callings to the functions of the JNI library.
How can I do this??

Answer 1

Define "rob" outside the scope of any subroutine, i.e., make it global.