BarbotAnder

#include "lab.h"
#include <stdio.h>
#include <stdlib.h> 

// Authored by: Myself
// Thread-safe: Not Thread-safe (allocates shared structures without synchronization)
list_t *list_init(void (*destroy_data)(void *), int (*compare_to)(const void *, const void *)) {
    list_t *list = (list_t *)malloc(sizeof(list_t)); // external function: malloc (thread-safe)
    if (list == NULL) {
        return NULL;

BarbotAnder

#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#define NUM_THREADS 4

pthread_mutex_t log_mutex = PTHREAD_MUTEX_INITIALIZER;  // EXT(ernal function): mutex to protect output stream

// Authored by: Myself