tdb: new test, cleanup old tests by centralizing lock tracking.

[ccan] / ccan / tdb / test / run-no-lock-during-traverse.c

diff --git a/ccan/tdb/test/run-no-lock-during-traverse.c b/ccan/tdb/test/run-no-lock-during-traverse.c
new file mode 100644 (file)
index 0000000..1eec04b
--- /dev/null
+++ b/ccan/tdb/test/run-no-lock-during-traverse.c
@@ -0,0 +1,113 @@
+#define _XOPEN_SOURCE 500
+#include <unistd.h>
+#include "lock-tracking.h"
+
+#define fcntl fcntl_with_lockcheck
+
+#include <ccan/tdb/tdb.h>
+#include <ccan/tdb/io.c>
+#include <ccan/tdb/tdb.c>
+#include <ccan/tdb/lock.c>
+#include <ccan/tdb/freelist.c>
+#include <ccan/tdb/traverse.c>
+#include <ccan/tdb/transaction.c>
+#include <ccan/tdb/error.c>
+#include <ccan/tdb/open.c>
+#include <ccan/tdb/check.c>
+#include <ccan/tap/tap.h>
+#include <stdlib.h>
+#include <err.h>
+
+#undef fcntl
+
+#define NUM_ENTRIES 10
+
+static bool prepare_entries(struct tdb_context *tdb)
+{
+       unsigned int i;
+       TDB_DATA key, data;
+       
+       for (i = 0; i < NUM_ENTRIES; i++) {
+               key.dsize = sizeof(i);
+               key.dptr = (void *)&i;
+               data.dsize = strlen("world");
+               data.dptr = (void *)"world";
+
+               if (tdb_store(tdb, key, data, 0) != 0)
+                       return false;
+       }
+       return true;
+}
+
+static void delete_entries(struct tdb_context *tdb)
+{
+       unsigned int i;
+       TDB_DATA key;
+
+       for (i = 0; i < NUM_ENTRIES; i++) {
+               key.dsize = sizeof(i);
+               key.dptr = (void *)&i;
+
+               ok1(tdb_delete(tdb, key) == 0);
+       }
+}
+
+/* We don't know how many times this will run. */
+static int delete_other(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data,
+                       void *private_data)
+{
+       unsigned int i;
+       memcpy(&i, key.dptr, 4);
+       i = (i + 1) % NUM_ENTRIES;
+       key.dptr = (void *)&i;
+       if (tdb_delete(tdb, key) != 0)
+               (*(int *)private_data)++;
+       return 0;
+}
+
+static int delete_self(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data,
+                       void *private_data)
+{
+       ok1(tdb_delete(tdb, key) == 0);
+       return 0;
+}
+
+int main(int argc, char *argv[])
+{
+       struct tdb_context *tdb;
+       int errors = 0;
+
+       plan_tests(41);
+       tdb = tdb_open("/tmp/test8.tdb", 1024, TDB_CLEAR_IF_FIRST,
+                      O_CREAT|O_TRUNC|O_RDWR, 0600);
+
+       ok1(tdb);
+       ok1(prepare_entries(tdb));
+       ok1(locking_errors == 0);
+       ok1(tdb_lockall(tdb) == 0);
+       ok1(locking_errors == 0);
+       tdb_traverse(tdb, delete_other, &errors);
+       ok1(errors == 0);
+       ok1(locking_errors == 0);
+       ok1(tdb_unlockall(tdb) == 0);
+
+       ok1(prepare_entries(tdb));
+       ok1(locking_errors == 0);
+       ok1(tdb_lockall(tdb) == 0);
+       ok1(locking_errors == 0);
+       tdb_traverse(tdb, delete_self, NULL);
+       ok1(locking_errors == 0);
+       ok1(tdb_unlockall(tdb) == 0);
+
+       ok1(prepare_entries(tdb));
+       ok1(locking_errors == 0);
+       ok1(tdb_lockall(tdb) == 0);
+       ok1(locking_errors == 0);
+       delete_entries(tdb);
+       ok1(locking_errors == 0);
+       ok1(tdb_unlockall(tdb) == 0);
+
+       ok1(tdb_close(tdb) == 0);       
+
+       return exit_status();
+}