Function hb_fifo_push_head

libhb/fifo.c:1473–1513

Prepends the specified packet list to the start of the specified FIFO.

// Prepends the specified packet list to the start of the specified FIFO.
void hb_fifo_push_head( hb_fifo_t * f, hb_buffer_t * b )
{
    hb_buffer_t * tmp;
    uint32_t      size = 0;

    if( !b )
    {
        return;
    }

    hb_lock( f->lock );
    if (f->size >= f->capacity &&
        f->cond_alert_full != NULL)
    {
        hb_cond_broadcast( f->cond_alert_full );
    }

    /*
     * If there are a chain of buffers prepend the lot
     */
    tmp = b;
    while( tmp->next )
    {
        tmp = tmp->next;
        size += 1;
    }

    if( f->size > 0 )
    {
        tmp->next = f->first;
    }
    else
    {
        f->last = tmp;
    }

    f->first = b;
    f->size += ( size + 1 );

    hb_unlock( f->lock );
}

void hb_fifo_close( hb_fifo_t ** _f )
{