/* delete (all) matching item(s) from list */
int skiplist_delete(skiplist *list, void *data){
return skiplist_delete_all(list,data);
}
static int test_stable_sort()
{
#define RECORDS 32
int i;
int result;
int index1;
int index2;
int delete_count;
int total_delete_count;
Skiplist sl;
SkiplistIterator iterator;
Record records[RECORDS];
Record *record;
Record target;
void *value;
instance_count = 0;
result = skiplist_init_ex(&sl, 12, compare_record,
free_test_func, 128, skiplist_type);
if (result != 0) {
return result;
}
for (i=0; i<RECORDS; i++) {
records[i].line = i + 1;
records[i].key = i + 1;
}
for (i=0; i<RECORDS/4; i++) {
index1 = (RECORDS - 1) * (int64_t)rand() / (int64_t)RAND_MAX;
index2 = RECORDS - 1 - index1;
if (index1 != index2) {
records[index1].key = records[index2].key;
}
}
for (i=0; i<RECORDS; i++) {
if ((result=skiplist_insert(&sl, records + i)) != 0) {
return result;
}
instance_count++;
}
assert(instance_count == RECORDS);
for (i=0; i<RECORDS; i++) {
value = skiplist_find(&sl, records + i);
assert(value != NULL && ((Record *)value)->key == records[i].key);
}
i = 0;
skiplist_iterator(&sl, &iterator);
while ((value=skiplist_next(&iterator)) != NULL) {
i++;
record = (Record *)value;
printf("%d => #%d\n", record->key, record->line);
}
assert(i==RECORDS);
target.key = 10;
target.line = 0;
if (skiplist_find_all(&sl, &target, &iterator) == 0) {
printf("found key: %d\n", target.key);
}
i = 0;
while ((value=skiplist_next(&iterator)) != NULL) {
i++;
record = (Record *)value;
printf("%d => #%d\n", record->key, record->line);
}
printf("found record count: %d\n", i);
total_delete_count = 0;
for (i=0; i<RECORDS; i++) {
if ((result=skiplist_delete_all(&sl, records + i,
&delete_count)) == 0)
{
total_delete_count += delete_count;
}
assert((result == 0 && delete_count > 0) ||
(result != 0 && delete_count == 0));
}
assert(total_delete_count == RECORDS);
assert(instance_count == 0);
i = 0;
skiplist_iterator(&sl, &iterator);
while ((value=skiplist_next(&iterator)) != NULL) {
i++;
}
assert(i == 0);
skiplist_destroy(&sl);
assert(instance_count == 0);
return 0;
}
