static jlog_line *
jlog_asynch_pop(jlog_asynch_ctx *actx, jlog_line **iter) {
jlog_line *h = NULL, *rev = NULL;
if(*iter) { /* we have more on the previous list */
h = *iter;
*iter = h->next;
return h;
}
while(1) {
h = (void *)(volatile void *)actx->head;
if(noit_atomic_casptr((volatile void **)&actx->head, NULL, h) == h) break;
/* TODO: load-load */
}
while(h) {
/* which unshifted things into the queue -- it's backwards, reverse it */
jlog_line *tmp = h;
h = h->next;
tmp->next = rev;
rev = tmp;
}
if(rev) *iter = rev->next;
else *iter = NULL;
return rev;
}
void
jlog_asynch_push(jlog_asynch_ctx *actx, jlog_line *n) {
while(1) {
n->next = (void *)(volatile void *)actx->head;
if(noit_atomic_casptr((volatile void **)&actx->head, n, n->next) == n->next) return;
/* TODO: load-load */
}
}
void
stratcon_datastore_register_onlooker(void (*f)(stratcon_datastore_op_t,
struct sockaddr *,
const char *, void *)) {
struct datastore_onlooker_list *nnode;
volatile void **vonlookers = (void *)&onlookers;
nnode = calloc(1, sizeof(*nnode));
nnode->dispatch = f;
nnode->next = onlookers;
while(noit_atomic_casptr(vonlookers,
nnode, nnode->next) != (void *)nnode->next)
nnode->next = onlookers;
}
