tdb2: use counters to decide when to coalesce records.

[ccan] / ccan / tdb2 / test / run-03-coalesce.c

diff --git a/ccan/tdb2/test/run-03-coalesce.c b/ccan/tdb2/test/run-03-coalesce.c
index 621ed01bd401679c51e388f88b022def7f3d3ba1..3fdd11c07706127d2f8d60857efaddfcdbd38dac 100644 (file)
--- a/ccan/tdb2/test/run-03-coalesce.c
+++ b/ccan/tdb2/test/run-03-coalesce.c
@@ -1,4 +1,5 @@
 #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>
@@ -12,32 +13,33 @@
 static tdb_len_t free_record_length(struct tdb_context *tdb, tdb_off_t off)
 {
        struct tdb_free_record f;
+       enum TDB_ERROR ecode;
 
-       if (tdb_read_convert(tdb, off, &f, sizeof(f)) != 0)
-               return TDB_OFF_ERR;
+       ecode = tdb_read_convert(tdb, off, &f, sizeof(f));
+       if (ecode != TDB_SUCCESS)
+               return ecode;
        if (frec_magic(&f) != TDB_FREE_MAGIC)
-               return TDB_OFF_ERR;
+               return TDB_ERR_CORRUPT;
        return frec_len(&f);
 }
 
 int main(int argc, char *argv[])
 {
-       tdb_off_t b_off;
+       tdb_off_t b_off, test;
        struct tdb_context *tdb;
        struct tdb_layout *layout;
        struct tdb_data data, key;
        tdb_len_t len;
 
        /* FIXME: Test TDB_CONVERT */
+       /* FIXME: Test lock order fail. */
 
-       plan_tests(38);
-       data.dptr = (void *)"world";
-       data.dsize = 5;
-       key.dptr = (void *)"hello";
-       key.dsize = 5;
+       plan_tests(42);
+       data = tdb_mkdata("world", 5);
+       key = tdb_mkdata("hello", 5);
 
        /* No coalescing can be done due to EOF */
-       layout = new_tdb_layout(NULL);
+       layout = new_tdb_layout("run-03-coalesce.tdb");
        tdb_layout_add_freetable(layout);
        len = 1024;
        tdb_layout_add_free(layout, len, 0);
@@ -49,15 +51,18 @@ int main(int argc, char *argv[])
        b_off = bucket_off(tdb->ftable_off, size_to_bucket(len));
        /* Lock and fail to coalesce. */
        ok1(tdb_lock_free_bucket(tdb, b_off, TDB_LOCK_WAIT) == 0);
-       ok1(coalesce(tdb, layout->elem[1].base.off, b_off, len) == 0);
+       test = layout->elem[1].base.off;
+       ok1(coalesce(tdb, layout->elem[1].base.off, b_off, len, &test)
+           == 0);
        tdb_unlock_free_bucket(tdb, b_off);
        ok1(free_record_length(tdb, layout->elem[1].base.off) == len);
+       ok1(test == layout->elem[1].base.off);
        ok1(tdb_check(tdb, NULL, NULL) == 0);
        tdb_close(tdb);
        tdb_layout_free(layout);
 
        /* No coalescing can be done due to used record */
-       layout = new_tdb_layout(NULL);
+       layout = new_tdb_layout("run-03-coalesce.tdb");
        tdb_layout_add_freetable(layout);
        tdb_layout_add_free(layout, 1024, 0);
        tdb_layout_add_used(layout, key, data, 6);
@@ -69,15 +74,18 @@ int main(int argc, char *argv[])
        b_off = bucket_off(tdb->ftable_off, size_to_bucket(1024));
        /* Lock and fail to coalesce. */
        ok1(tdb_lock_free_bucket(tdb, b_off, TDB_LOCK_WAIT) == 0);
-       ok1(coalesce(tdb, layout->elem[1].base.off, b_off, 1024) == 0);
+       test = layout->elem[1].base.off;
+       ok1(coalesce(tdb, layout->elem[1].base.off, b_off, 1024, &test)
+           == 0);
        tdb_unlock_free_bucket(tdb, b_off);
        ok1(free_record_length(tdb, layout->elem[1].base.off) == 1024);
+       ok1(test == layout->elem[1].base.off);
        ok1(tdb_check(tdb, NULL, NULL) == 0);
        tdb_close(tdb);
        tdb_layout_free(layout);
 
        /* Coalescing can be done due to two free records, then EOF */
-       layout = new_tdb_layout(NULL);
+       layout = new_tdb_layout("run-03-coalesce.tdb");
        tdb_layout_add_freetable(layout);
        tdb_layout_add_free(layout, 1024, 0);
        tdb_layout_add_free(layout, 2048, 0);
@@ -90,8 +98,12 @@ int main(int argc, char *argv[])
        b_off = bucket_off(tdb->ftable_off, size_to_bucket(1024));
        /* Lock and coalesce. */
        ok1(tdb_lock_free_bucket(tdb, b_off, TDB_LOCK_WAIT) == 0);
-       ok1(coalesce(tdb, layout->elem[1].base.off, b_off, 1024) == 1);
-       ok1(tdb->allrecord_lock.count == 0 && tdb->num_lockrecs == 0);
+       test = layout->elem[2].base.off;
+       ok1(coalesce(tdb, layout->elem[1].base.off, b_off, 1024, &test)
+           == 1024 + sizeof(struct tdb_used_record) + 2048);
+       /* Should tell us it's erased this one... */
+       ok1(test == TDB_ERR_NOEXIST);
+       ok1(tdb->file->allrecord_lock.count == 0 && tdb->file->num_lockrecs == 0);
        ok1(free_record_length(tdb, layout->elem[1].base.off)
            == 1024 + sizeof(struct tdb_used_record) + 2048);
        ok1(tdb_check(tdb, NULL, NULL) == 0);
@@ -99,7 +111,7 @@ int main(int argc, char *argv[])
        tdb_layout_free(layout);
 
        /* Coalescing can be done due to two free records, then data */
-       layout = new_tdb_layout(NULL);
+       layout = new_tdb_layout("run-03-coalesce.tdb");
        tdb_layout_add_freetable(layout);
        tdb_layout_add_free(layout, 1024, 0);
        tdb_layout_add_free(layout, 512, 0);
@@ -113,16 +125,19 @@ int main(int argc, char *argv[])
        b_off = bucket_off(tdb->ftable_off, size_to_bucket(1024));
        /* Lock and coalesce. */
        ok1(tdb_lock_free_bucket(tdb, b_off, TDB_LOCK_WAIT) == 0);
-       ok1(coalesce(tdb, layout->elem[1].base.off, b_off, 1024) == 1);
-       ok1(tdb->allrecord_lock.count == 0 && tdb->num_lockrecs == 0);
+       test = layout->elem[2].base.off;
+       ok1(coalesce(tdb, layout->elem[1].base.off, b_off, 1024, &test)
+           == 1024 + sizeof(struct tdb_used_record) + 512);
+       ok1(tdb->file->allrecord_lock.count == 0 && tdb->file->num_lockrecs == 0);
        ok1(free_record_length(tdb, layout->elem[1].base.off)
            == 1024 + sizeof(struct tdb_used_record) + 512);
+       ok1(test == TDB_ERR_NOEXIST);
        ok1(tdb_check(tdb, NULL, NULL) == 0);
        tdb_close(tdb);
        tdb_layout_free(layout);
 
        /* Coalescing can be done due to three free records, then EOF */
-       layout = new_tdb_layout(NULL);
+       layout = new_tdb_layout("run-03-coalesce.tdb");
        tdb_layout_add_freetable(layout);
        tdb_layout_add_free(layout, 1024, 0);
        tdb_layout_add_free(layout, 512, 0);
@@ -137,8 +152,12 @@ int main(int argc, char *argv[])
        b_off = bucket_off(tdb->ftable_off, size_to_bucket(1024));
        /* Lock and coalesce. */
        ok1(tdb_lock_free_bucket(tdb, b_off, TDB_LOCK_WAIT) == 0);
-       ok1(coalesce(tdb, layout->elem[1].base.off, b_off, 1024) == 1);
-       ok1(tdb->allrecord_lock.count == 0 && tdb->num_lockrecs == 0);
+       test = layout->elem[2].base.off;
+       ok1(coalesce(tdb, layout->elem[1].base.off, b_off, 1024, &test)
+           == 1024 + sizeof(struct tdb_used_record) + 512
+           + sizeof(struct tdb_used_record) + 256);
+       ok1(tdb->file->allrecord_lock.count == 0
+           && tdb->file->num_lockrecs == 0);
        ok1(free_record_length(tdb, layout->elem[1].base.off)
            == 1024 + sizeof(struct tdb_used_record) + 512
            + sizeof(struct tdb_used_record) + 256);