#include "utils.h"
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <time.h>

void new_thread(void *(*f)(void *), void *data)
{
  pthread_t t;
  pthread_attr_t att;

  if (pthread_attr_init(&att))
    { fprintf(stderr, "pthread_attr_init err\n"); exit(1); }
  if (pthread_attr_setdetachstate(&att, PTHREAD_CREATE_DETACHED))
    { fprintf(stderr, "pthread_attr_setdetachstate err\n"); exit(1); }
  if (pthread_attr_setstacksize(&att, 10000000))
    { fprintf(stderr, "pthread_attr_setstacksize err\n"); exit(1); }
  if (pthread_create(&t, &att, f, data))
    { fprintf(stderr, "pthread_create err\n"); exit(1); }
  if (pthread_attr_destroy(&att))
    { fprintf(stderr, "pthread_attr_destroy err\n"); exit(1); }
}

void sleepms(int ms)
{
  struct timespec t;

  t.tv_sec = ms / 1000;
  t.tv_nsec = (ms % 1000) * 1000000L;

  /* TODO: deal with EINTR */
  if (nanosleep(&t, NULL)) abort();
}

/****************************************************************************/
/* list                                                                     */
/****************************************************************************/

list *list_remove_head(list *l)
{
  list *ret;
  if (l == NULL) return NULL;
  ret = l->next;
  if (ret != NULL) ret->last = l->last;
  free(l);
  return ret;
}

list *list_append(list *l, void *data)
{
  list *new = calloc(1, sizeof(list));
  if (new == NULL) abort();
  new->data = data;
  if (l == NULL) {
    new->last = new;
    return new;
  }
  l->last->next = new;
  l->last = new;
  return l;
}