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snapshot v2/p3; snap/restore/rm fixes, _insert underway

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Gregory Burd 2024-03-23 10:29:47 -04:00
parent 0557b6d0a1
commit d5b5599c5d
1 changed files with 14 additions and 4 deletions
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18
include/sl.h
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@ -261,7 +261,7 @@
\ \
/* Skip List structure and type */ \ /* Skip List structure and type */ \
typedef struct decl { \ typedef struct decl { \
size_t level, length, max, gen; \ size_t level, length, max, gen, max_gen; \
int (*cmp)(struct decl *, decl##_node_t *, decl##_node_t *, void *); \ int (*cmp)(struct decl *, decl##_node_t *, decl##_node_t *, void *); \
void *aux; \ void *aux; \
decl##_node_t *slh_head; \ decl##_node_t *slh_head; \
@ -461,7 +461,14 @@
return -1; \ return -1; \
} \ } \
level = __skip_toss_##decl(slist->max - 1); \ level = __skip_toss_##decl(slist->max - 1); \
n->field.sle.gen = slist->gen; \
n->field.sle.height = level; \ n->field.sle.height = level; \
/* preserve nodes for snapshots if necessary */ \
for (i = 0; i < len; i++) { \
if (path[i]->field.sle.gen >= slist->max_gen) { \
} \
} \
\
for (i = slist->slh_head->field.sle.height + 1; i < n->field.sle.height + 1; i++) { \ for (i = slist->slh_head->field.sle.height + 1; i < n->field.sle.height + 1; i++) { \
path[i + 1] = slist->slh_tail; \ path[i + 1] = slist->slh_tail; \
} \ } \
@ -827,7 +834,10 @@
if (slist == NULL) \ if (slist == NULL) \
return 0; \ return 0; \
\ \
return ++slist->gen; \ slist->gen++; \
if (slist->gen > slist->max_gen) \
slist->max_gen = slist->gen; \
return slist->gen; \
} \ } \
\ \
/* -- skip_restore_snapshot_ \ /* -- skip_restore_snapshot_ \
@ -889,7 +899,7 @@
prev = node; \ prev = node; \
node = next; \ node = next; \
} \ } \
slist->gen = gen; \ slist->max_gen = gen; \
return slist; \ return slist; \
} \ } \
\ \
@ -921,7 +931,7 @@
prev = node; \ prev = node; \
node = next; \ node = next; \
} \ } \
slist->gen = gen - 1; \ slist->max_gen = (gen == 0 ? 0 : gen - 1); \
} \ } \
\ \
/* Archive of a Skip List */ \ /* Archive of a Skip List */ \