From: Rusty Russell <rusty@rustcorp.com.au>
Date: Wed, 21 Oct 2009 13:40:54 +0000 (+1030)
Subject: lib/tdb: add -t (always use transactions) option to tdbtorture
X-Git-Tag: ctdb-1.0.109~3^2~66
X-Git-Url: http://git.samba.org/?a=commitdiff_plain;h=f7278a277ed91587cae5b5e3660dad7124bdb73f;p=sahlberg%2Fctdb.git

lib/tdb: add -t (always use transactions) option to tdbtorture

This means you can kill it at any time and expect no corruption.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

(cherry picked from samba commit 0fc6800005ffb532a5e5699c97f13f1de138d51f)

Signed-off-by: Stefan Metzmacher <metze@samba.org>
---

diff --git a/lib/tdb/tools/tdbtorture.c b/lib/tdb/tools/tdbtorture.c
index 4e73fdd3..3eb22d78 100644
--- a/lib/tdb/tools/tdbtorture.c
+++ b/lib/tdb/tools/tdbtorture.c
@@ -28,6 +28,7 @@
 static struct tdb_context *db;
 static int in_transaction;
 static int error_count;
+static int always_transaction = 0;
 
 #ifdef PRINTF_ATTRIBUTE
 static void tdb_log(struct tdb_context *tdb, enum tdb_debug_level level, const char *format, ...) PRINTF_ATTRIBUTE(3,4);
@@ -103,8 +104,16 @@ static void addrec_db(void)
 	data.dptr = (unsigned char *)d;
 	data.dsize = dlen+1;
 
+#if REOPEN_PROB
+	if (in_transaction == 0 && random() % REOPEN_PROB == 0) {
+		tdb_reopen_all(0);
+		goto next;
+	}
+#endif
+
 #if TRANSACTION_PROB
-	if (in_transaction == 0 && random() % TRANSACTION_PROB == 0) {
+	if (in_transaction == 0 &&
+	    (always_transaction || random() % TRANSACTION_PROB == 0)) {
 		if (tdb_transaction_start(db) != 0) {
 			fatal("tdb_transaction_start failed");
 		}
@@ -127,13 +136,6 @@ static void addrec_db(void)
 	}
 #endif
 
-#if REOPEN_PROB
-	if (in_transaction == 0 && random() % REOPEN_PROB == 0) {
-		tdb_reopen_all(0);
-		goto next;
-	} 
-#endif
-
 #if DELETE_PROB
 	if (random() % DELETE_PROB == 0) {
 		tdb_delete(db, key);
@@ -203,7 +205,7 @@ static int traverse_fn(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf,
 
 static void usage(void)
 {
-	printf("Usage: tdbtorture [-n NUM_PROCS] [-l NUM_LOOPS] [-s SEED] [-H HASH_SIZE]\n");
+	printf("Usage: tdbtorture [-t] [-n NUM_PROCS] [-l NUM_LOOPS] [-s SEED] [-H HASH_SIZE]\n");
 	exit(0);
 }
 
@@ -220,7 +222,7 @@ static void usage(void)
 	struct tdb_logging_context log_ctx;
 	log_ctx.log_fn = tdb_log;
 
-	while ((c = getopt(argc, argv, "n:l:s:H:h")) != -1) {
+	while ((c = getopt(argc, argv, "n:l:s:H:th")) != -1) {
 		switch (c) {
 		case 'n':
 			num_procs = strtol(optarg, NULL, 0);
@@ -234,6 +236,9 @@ static void usage(void)
 		case 's':
 			seed = strtol(optarg, NULL, 0);
 			break;
+		case 't':
+			always_transaction = 1;
+			break;
 		default:
 			usage();
 		}
@@ -259,8 +264,8 @@ static void usage(void)
 	}
 
 	if (i == 0) {
-		printf("testing with %d processes, %d loops, %d hash_size, seed=%d\n", 
-		       num_procs, num_loops, hash_size, seed);
+		printf("testing with %d processes, %d loops, %d hash_size, seed=%d%s\n",
+		       num_procs, num_loops, hash_size, seed, always_transaction ? " (all within transactions)" : "");
 	}
 
 	srand(seed + i);
@@ -272,8 +277,20 @@ static void usage(void)
 
 	if (error_count == 0) {
 		tdb_traverse_read(db, NULL, NULL);
+		if (always_transaction) {
+			while (in_transaction) {
+				tdb_transaction_cancel(db);
+				in_transaction--;
+			}
+			if (tdb_transaction_start(db) != 0)
+				fatal("tdb_transaction_start failed");
+		}
 		tdb_traverse(db, traverse_fn, NULL);
 		tdb_traverse(db, traverse_fn, NULL);
+		if (always_transaction) {
+			if (tdb_transaction_commit(db) != 0)
+				fatal("tdb_transaction_commit failed");
+		}
 	}
 
 	tdb_close(db);