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add active defrag support for streams

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This commit is contained in:
Oran Agra
2018-06-26 14:14:35 +03:00
parent e8099cabd1
commit 5616d4c603
6 changed files with 230 additions and 25 deletions
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7
src/rax.c
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@ -1167,6 +1167,7 @@ void raxStart(raxIterator *it, rax *rt) {
it->key = it->key_static_string;
it->key_max = RAX_ITER_STATIC_LEN;
it->data = NULL;
it->node_cb = NULL;
raxStackInit(&it->stack);
}
@ -1240,6 +1241,8 @@ int raxIteratorNextStep(raxIterator *it, int noup) {
if (!raxIteratorAddChars(it,it->node->data,
it->node->iscompr ? it->node->size : 1)) return 0;
memcpy(&it->node,cp,sizeof(it->node));
if (it->node_cb && it->node_cb(&it->node))
memcpy(cp,&it->node,sizeof(it->node));
/* For "next" step, stop every time we find a key along the
* way, since the key is lexicograhically smaller compared to
* what follows in the sub-children. */
@ -1292,6 +1295,8 @@ int raxIteratorNextStep(raxIterator *it, int noup) {
raxIteratorAddChars(it,it->node->data+i,1);
if (!raxStackPush(&it->stack,it->node)) return 0;
memcpy(&it->node,cp,sizeof(it->node));
if (it->node_cb && it->node_cb(&it->node))
memcpy(cp,&it->node,sizeof(it->node));
if (it->node->iskey) {
it->data = raxGetData(it->node);
return 1;
@ -1325,7 +1330,7 @@ int raxSeekGreatest(raxIterator *it) {
/* Like raxIteratorNextStep() but implements an iteration step moving
* to the lexicographically previous element. The 'noup' option has a similar
* effect to the one of raxIteratorPrevSte(). */
* effect to the one of raxIteratorNextStep(). */
int raxIteratorPrevStep(raxIterator *it, int noup) {
if (it->flags & RAX_ITER_EOF) {
return 1;