void
channel_write (channel_t *channel, void *msg, size_t len)
{
channel_node_t *node = store_alloc(global.store, sizeof(channel_node_t) + len);
node->next = NULL;
node->length = len;
memmove(node->payload, msg, len);
ensure(pthread_mutex_lock(&channel->mutex) == 0);
channel->writers++;
while (channel->limit > 0 && channel->backlog == channel->limit)
ensure(pthread_cond_wait(&channel->cond_write, &channel->mutex) == 0);
channel->backlog++;
if (!channel->list)
{
channel->list = node;
channel->last = node;
}
else
{
channel->last->next = node;
channel->last = node;
}
if (channel->readers)
ensure(pthread_cond_signal(&channel->cond_read) == 0);
channel->writers--;
ensure(pthread_mutex_unlock(&channel->mutex) == 0);
}
// EXTERNAL API
page_p bvec_create(struct store *s)
{
page_p page = store_alloc(s, BVEC_DEF_PAGE_SIZE);
bvec_hdr_write(s, page, 0,
BVEC_DEF_PAGE_SIZE,
0,
BVEC_HEADER_SIZE,
0);
return page;
}
