ps display thread name

Question

Is there a way for ps (or similar tool) to display the pthread's name? I wrote the following simple program:

// th_name.c
#include <stdio.h>
#include <pthread.h>

void * f1() {
    printf("f1 : Starting sleep\n");
    sleep(30);
    printf("f1 : Done sleep\n");
}

int main() {

    pthread_t  f1_thread;
    pthread_create(&f1_thread, NULL, f1, NULL);
    pthread_setname_np(f1_thread, "f1_thread");

    printf("Main : Starting sleep\n");
    sleep(40);
    printf("Main : Done sleep\n");
    return 0;

}

Is there a command/utility (like ps) that I can use to display the threads for the above program, along with their name.

$ /tmp/th_name > /dev/null &
[3] 2055
$ ps -eLf | egrep "th_name|UID"
UID        PID  PPID   LWP  C NLWP STIME TTY          TIME CMD
aal      31088 29342 31088  0    2 10:01 pts/4    00:00:00 /tmp/th_name
aal      31088 29342 31089  0    2 10:01 pts/4    00:00:00 /tmp/th_name
aal      31095 29342 31095  0    1 10:01 pts/4    00:00:00 egrep th_name|UID

I am running my program on Ubuntu 12.10.

Answer 1

With procps-ng (https://gitlab.com/procps-ng/procps) there are output option -L and -T which will print threads names:

$ ps -eL
$ ps -eT

-l long format may be used with them:

$ ps -eLl
$ ps -eTl

but -f option will replace thread name with full command line which is the same for all threads.