c - SimGrid. Create subprocess with argument -

i have process declared in main.c:

msg_function_register("dispatcher", dispatcher); 

the dispatcher function gets arguments deployment.xml file:

int num = xbt_str_parse_int(argv[1], "invalid argument %s"); int id = xbt_str_parse_int(argv[2], "invalid argument %s"); 

then dispatcher creates subprocess:

msg_process_create_with_arguments("ts", subprocess, null, msg_host_self(), agrc, argv); 

how can pass num , id subprocess function?

int subprocess(int argc, char* argv){     return 0; } 

how can call argv inside subprocess function?

you have 2 ways pass arguments msg processes:

• either via argv;

• or via data argument.

pass data via argv

in first solution, have create new argv:

// create argv child process char** newargv = xbt_new(char*, 3); newargv[1] = xbt_strdup("ts"); newargv[2] = xbt_strdup(argv[0]); newargv[3] = xbt_strdup(argv[0]); // create process new argv: msg_process_create_with_arguments("ts", subprocess, null,     msg_host_self(), 3, newargv); 

with:

int subprocess(int argc, char* argv) {     int num = xbt_str_parse_int(argv[1], "invalid argument %s");     int id = xbt_str_parse_int(argv[2], "invalid argument %s");     return 0; } 

pass data via data

another solution pass data using data parameter:

struct ts_data {   int num;   int id; };  struct ts_data* data = xbt_new(ts_data, 1); data->num = xbt_str_parse_int(argv[1], "invalid argument %s"); data->id = xbt_str_parse_int(argv[2], "invalid argument %s"); msg_process_create_with_arguments("ts", subprocess, data,     msg_host_self(), 0, null 

with:

int subprocess(int argc, char* argv) {     struct ts_data* data = msg_process_get_data(msg_process_self());     int num = data->num;     int id = data->id;     free(data);     return 0; }