How to create a process with vector in SimGrid?

Question

I want to create a process with data in SimGrid, so I do this:

int worker(int argc, char *argv[])
{
    vector<string> vector1;
    vector1.push_back("word");
    MSG_process_create("x", executor, &vector1, MSG_host_self());
    return 0;
}

But in executor I have a segmentation error:

int executor(int argc, char* argv[]){
    MSG_process_sleep(10);
    vector<string> *data = (vector<string>*) MSG_process_get_data(MSG_process_self());
    XBT_INFO("%s", data->front().c_str());
    return 0;
}

I know that it happened because vector1 goes out of scope when worker function ends and vector1 dissappered, so "there is no vector1 data" in executor.

How to do it properly?

Answer 1

I think you just want to use a pointer here :)

int worker(int argc, char *argv[])
{
    vector<string>* vector1 = new vector<string>();
    vector1->push_back("word");
    MSG_process_create("x", executor, vector1, MSG_host_self());
    return 0;
}

int executor(int argc, char* argv[]){
    MSG_process_sleep(10);
    vector<string> *data = (vector<string>*) MSG_process_get_data(MSG_process_self());
    XBT_INFO("%s", data->front().c_str());
    delete data;
    return 0;
}