static int unbuffered_chan_init(chan_t* chan)
{
if (pthread_mutex_init(&chan->w_mu, NULL) != 0)
{
return -1;
}
if (pthread_mutex_init(&chan->r_mu, NULL) != 0)
{
pthread_mutex_destroy(&chan->w_mu);
return -1;
}
if (pthread_mutex_init(&chan->m_mu, NULL) != 0)
{
pthread_mutex_destroy(&chan->w_mu);
pthread_mutex_destroy(&chan->r_mu);
return -1;
}
if (pthread_cond_init(&chan->m_cond, NULL) != 0)
{
pthread_mutex_destroy(&chan->m_mu);
pthread_mutex_destroy(&chan->w_mu);
pthread_mutex_destroy(&chan->r_mu);
return -1;
}
blocking_pipe_t* pipe = blocking_pipe_init();
if (!pipe)
{
pthread_mutex_destroy(&chan->m_mu);
pthread_mutex_destroy(&chan->w_mu);
pthread_mutex_destroy(&chan->r_mu);
pthread_cond_destroy(&chan->m_cond);
return -1;
}
chan->readers = 0;
chan->closed = 0;
chan->pipe = pipe;
return 0;
}
static int unbuffered_chan_init(chan_t* chan)
{
pthread_mutex_t* w_mu = (pthread_mutex_t*) malloc(sizeof(pthread_mutex_t));
if (!w_mu)
{
errno = ENOMEM;
return -1;
}
if (pthread_mutex_init(w_mu, NULL) != 0)
{
free(w_mu);
}
pthread_mutex_t* r_mu = (pthread_mutex_t*) malloc(sizeof(pthread_mutex_t));
if (!r_mu)
{
errno = ENOMEM;
pthread_mutex_destroy(w_mu);
return -1;
}
if (pthread_mutex_init(r_mu, NULL) != 0)
{
free(r_mu);
pthread_mutex_destroy(w_mu);
return -1;
}
pthread_mutex_t* mu = (pthread_mutex_t*) malloc(sizeof(pthread_mutex_t));
if (!mu)
{
errno = ENOMEM;
pthread_mutex_destroy(w_mu);
pthread_mutex_destroy(r_mu);
return -1;
}
if (pthread_mutex_init(mu, NULL) != 0)
{
free(mu);
pthread_mutex_destroy(w_mu);
pthread_mutex_destroy(r_mu);
return -1;
}
pthread_cond_t* cond = (pthread_cond_t*) malloc(sizeof(pthread_cond_t));
if (!cond)
{
errno = ENOMEM;
pthread_mutex_destroy(mu);
pthread_mutex_destroy(w_mu);
pthread_mutex_destroy(r_mu);
return -1;
}
if (pthread_cond_init(cond, NULL) != 0)
{
free(cond);
pthread_mutex_destroy(mu);
pthread_mutex_destroy(w_mu);
pthread_mutex_destroy(r_mu);
return -1;
}
blocking_pipe_t* pipe = blocking_pipe_init();
if (pipe == NULL)
{
free(cond);
pthread_mutex_destroy(mu);
pthread_mutex_destroy(w_mu);
pthread_mutex_destroy(r_mu);
return -1;
}
chan->m_mu = mu;
chan->m_cond = cond;
chan->w_mu = w_mu;
chan->r_mu = r_mu;
chan->readers = 0;
chan->closed = 0;
chan->pipe = pipe;
return 0;
}
