#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include <OS.h>


static void
list_semaphores(const char* process)
{
        printf("%s (%ld) semaphores:\n", process, find_thread(NULL));

        sem_info semInfo;
        int32 cookie = 0;
        while (get_next_sem_info(B_CURRENT_TEAM, &cookie, &semInfo) == B_OK)
                printf("  %9ld  %s\n", semInfo.sem, semInfo.name);
}


int
main()
{
        pid_t child = fork();
        if (child < 0) {
                fprintf(stderr, "Error: fork() failed: %s\n", strerror(errno));
                exit(1);
        }

        if (child > 0) {
                // the parent process -- wait for the child to finish
                status_t result;
                wait_for_thread(child, &result);
        }

        list_semaphores(child == 0 ? "child" : "parent");

        return 0;