diff options
Diffstat (limited to 'lib/tdb2/test/run-25-hashoverload.c')
| -rw-r--r-- | lib/tdb2/test/run-25-hashoverload.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/lib/tdb2/test/run-25-hashoverload.c b/lib/tdb2/test/run-25-hashoverload.c new file mode 100644 index 0000000000..83f549d6b2 --- /dev/null +++ b/lib/tdb2/test/run-25-hashoverload.c @@ -0,0 +1,121 @@ +#include <ccan/tdb2/tdb.c> +#include <ccan/tdb2/open.c> +#include <ccan/tdb2/free.c> +#include <ccan/tdb2/lock.c> +#include <ccan/tdb2/io.c> +#include <ccan/tdb2/hash.c> +#include <ccan/tdb2/transaction.c> +#include <ccan/tdb2/traverse.c> +#include <ccan/tdb2/check.c> +#include <ccan/tap/tap.h> +#include "logging.h" + +static uint64_t badhash(const void *key, size_t len, uint64_t seed, void *priv) +{ + return 0; +} + +static int trav(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf, void *p) +{ + if (p) + return tdb_delete(tdb, key); + return 0; +} + +int main(int argc, char *argv[]) +{ + unsigned int i, j; + struct tdb_context *tdb; + struct tdb_data key = { (unsigned char *)&j, sizeof(j) }; + struct tdb_data dbuf = { (unsigned char *)&j, sizeof(j) }; + union tdb_attribute hattr = { .hash = { .base = { TDB_ATTRIBUTE_HASH }, + .fn = badhash } }; + int flags[] = { TDB_INTERNAL, TDB_DEFAULT, TDB_NOMMAP, + TDB_INTERNAL|TDB_CONVERT, TDB_CONVERT, + TDB_NOMMAP|TDB_CONVERT, + }; + + hattr.base.next = &tap_log_attr; + + plan_tests(6883); + for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) { + struct tdb_data d = { NULL, 0 }; /* Bogus GCC warning */ + + tdb = tdb_open("run-25-hashoverload.tdb", flags[i], + O_RDWR|O_CREAT|O_TRUNC, 0600, &hattr); + ok1(tdb); + if (!tdb) + continue; + + /* Fill a group. */ + for (j = 0; j < (1 << TDB_HASH_GROUP_BITS); j++) { + ok1(tdb_store(tdb, key, dbuf, TDB_INSERT) == 0); + } + ok1(tdb_check(tdb, NULL, NULL) == 0); + + /* Now store one last value: should form chain. */ + ok1(tdb_store(tdb, key, dbuf, TDB_INSERT) == 0); + ok1(tdb_check(tdb, NULL, NULL) == 0); + + /* Check we can find them all. */ + for (j = 0; j < (1 << TDB_HASH_GROUP_BITS) + 1; j++) { + ok1(tdb_fetch(tdb, key, &d) == TDB_SUCCESS); + ok1(d.dsize == sizeof(j)); + ok1(d.dptr != NULL); + ok1(d.dptr && memcmp(d.dptr, &j, d.dsize) == 0); + free(d.dptr); + } + + /* Now add a *lot* more. */ + for (j = (1 << TDB_HASH_GROUP_BITS) + 1; + j < (16 << TDB_HASH_GROUP_BITS); + j++) { + ok1(tdb_store(tdb, key, dbuf, TDB_INSERT) == 0); + ok1(tdb_fetch(tdb, key, &d) == TDB_SUCCESS); + ok1(d.dsize == sizeof(j)); + ok1(d.dptr != NULL); + ok1(d.dptr && memcmp(d.dptr, &j, d.dsize) == 0); + free(d.dptr); + } + ok1(tdb_check(tdb, NULL, NULL) == 0); + + /* Traverse through them. */ + ok1(tdb_traverse(tdb, trav, NULL) == j); + + /* Empty the first chain-worth. */ + for (j = 0; j < (1 << TDB_HASH_GROUP_BITS); j++) + ok1(tdb_delete(tdb, key) == 0); + + ok1(tdb_check(tdb, NULL, NULL) == 0); + + for (j = (1 << TDB_HASH_GROUP_BITS); + j < (16 << TDB_HASH_GROUP_BITS); + j++) { + ok1(tdb_fetch(tdb, key, &d) == TDB_SUCCESS); + ok1(d.dsize == sizeof(j)); + ok1(d.dptr != NULL); + ok1(d.dptr && memcmp(d.dptr, &j, d.dsize) == 0); + free(d.dptr); + } + + /* Traverse through them. */ + ok1(tdb_traverse(tdb, trav, NULL) + == (15 << TDB_HASH_GROUP_BITS)); + + /* Re-add */ + for (j = 0; j < (1 << TDB_HASH_GROUP_BITS); j++) { + ok1(tdb_store(tdb, key, dbuf, TDB_INSERT) == 0); + } + ok1(tdb_check(tdb, NULL, NULL) == 0); + + /* Now try deleting as we go. */ + ok1(tdb_traverse(tdb, trav, trav) + == (16 << TDB_HASH_GROUP_BITS)); + ok1(tdb_check(tdb, NULL, NULL) == 0); + ok1(tdb_traverse(tdb, trav, NULL) == 0); + tdb_close(tdb); + } + + ok1(tap_log_messages == 0); + return exit_status(); +} |