From ef2e26c91b80556af033d3335e55f5dfa6fff31d Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <tridge@samba.org>
Date: Wed, 13 Aug 2003 01:53:07 +0000
Subject: first public release of samba4 code

(This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
---
 source4/utils/tdb/tdbtorture.c | 226 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 226 insertions(+)
 create mode 100644 source4/utils/tdb/tdbtorture.c

(limited to 'source4/utils/tdb/tdbtorture.c')

diff --git a/source4/utils/tdb/tdbtorture.c b/source4/utils/tdb/tdbtorture.c
new file mode 100644
index 0000000000..e27bbff990
--- /dev/null
+++ b/source4/utils/tdb/tdbtorture.c
@@ -0,0 +1,226 @@
+#include <stdlib.h>
+#include <time.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include "tdb.h"
+
+/* this tests tdb by doing lots of ops from several simultaneous
+   writers - that stresses the locking code. Build with TDB_DEBUG=1
+   for best effect */
+
+
+
+#define REOPEN_PROB 30
+#define DELETE_PROB 8
+#define STORE_PROB 4
+#define APPEND_PROB 6
+#define LOCKSTORE_PROB 0
+#define TRAVERSE_PROB 20
+#define CULL_PROB 100
+#define KEYLEN 3
+#define DATALEN 100
+#define LOCKLEN 20
+
+static TDB_CONTEXT *db;
+
+static void tdb_log(TDB_CONTEXT *tdb, int level, const char *format, ...)
+{
+	va_list ap;
+    
+	va_start(ap, format);
+	vfprintf(stdout, format, ap);
+	va_end(ap);
+	fflush(stdout);
+#if 0
+	{
+		char *ptr;
+		asprintf(&ptr,"xterm -e gdb /proc/%d/exe %d", getpid(), getpid());
+		system(ptr);
+		free(ptr);
+	}
+#endif	
+}
+
+static void fatal(char *why)
+{
+	perror(why);
+	exit(1);
+}
+
+static char *randbuf(int len)
+{
+	char *buf;
+	int i;
+	buf = (char *)malloc(len+1);
+
+	for (i=0;i<len;i++) {
+		buf[i] = 'a' + (rand() % 26);
+	}
+	buf[i] = 0;
+	return buf;
+}
+
+static int cull_traverse(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf,
+			 void *state)
+{
+	if (random() % CULL_PROB == 0) {
+		tdb_delete(tdb, key);
+	}
+	return 0;
+}
+
+static void addrec_db(void)
+{
+	int klen, dlen, slen;
+	char *k, *d, *s;
+	TDB_DATA key, data, lockkey;
+
+	klen = 1 + (rand() % KEYLEN);
+	dlen = 1 + (rand() % DATALEN);
+	slen = 1 + (rand() % LOCKLEN);
+
+	k = randbuf(klen);
+	d = randbuf(dlen);
+	s = randbuf(slen);
+
+	key.dptr = k;
+	key.dsize = klen+1;
+
+	data.dptr = d;
+	data.dsize = dlen+1;
+
+	lockkey.dptr = s;
+	lockkey.dsize = slen+1;
+
+#if REOPEN_PROB
+	if (random() % REOPEN_PROB == 0) {
+		tdb_reopen_all();
+		goto next;
+	} 
+#endif
+
+#if DELETE_PROB
+	if (random() % DELETE_PROB == 0) {
+		tdb_delete(db, key);
+		goto next;
+	}
+#endif
+
+#if STORE_PROB
+	if (random() % STORE_PROB == 0) {
+		if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
+			fatal("tdb_store failed");
+		}
+		goto next;
+	}
+#endif
+
+#if APPEND_PROB
+	if (random() % APPEND_PROB == 0) {
+		if (tdb_append(db, key, data) != 0) {
+			fatal("tdb_append failed");
+		}
+		goto next;
+	}
+#endif
+
+#if LOCKSTORE_PROB
+	if (random() % LOCKSTORE_PROB == 0) {
+		tdb_chainlock(db, lockkey);
+		data = tdb_fetch(db, key);
+		if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
+			fatal("tdb_store failed");
+		}
+		if (data.dptr) free(data.dptr);
+		tdb_chainunlock(db, lockkey);
+		goto next;
+	} 
+#endif
+
+#if TRAVERSE_PROB
+	if (random() % TRAVERSE_PROB == 0) {
+		tdb_traverse(db, cull_traverse, NULL);
+		goto next;
+	}
+#endif
+
+	data = tdb_fetch(db, key);
+	if (data.dptr) free(data.dptr);
+
+next:
+	free(k);
+	free(d);
+	free(s);
+}
+
+static int traverse_fn(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf,
+                       void *state)
+{
+	tdb_delete(tdb, key);
+	return 0;
+}
+
+#ifndef NPROC
+#define NPROC 6
+#endif
+
+#ifndef NLOOPS
+#define NLOOPS 200000
+#endif
+
+int main(int argc, char *argv[])
+{
+	int i, seed=0;
+	int loops = NLOOPS;
+	pid_t pids[NPROC];
+
+	pids[0] = getpid();
+
+	for (i=0;i<NPROC-1;i++) {
+		if ((pids[i+1]=fork()) == 0) break;
+	}
+
+	db = tdb_open("torture.tdb", 2, TDB_CLEAR_IF_FIRST, 
+		      O_RDWR | O_CREAT, 0600);
+	if (!db) {
+		fatal("db open failed");
+	}
+	tdb_logging_function(db, tdb_log);
+
+	srand(seed + getpid());
+	srandom(seed + getpid() + time(NULL));
+	for (i=0;i<loops;i++) addrec_db();
+
+	tdb_traverse(db, NULL, NULL);
+	tdb_traverse(db, traverse_fn, NULL);
+	tdb_traverse(db, traverse_fn, NULL);
+
+	tdb_close(db);
+
+	if (getpid() == pids[0]) {
+		for (i=0;i<NPROC-1;i++) {
+			int status;
+			if (waitpid(pids[i+1], &status, 0) != pids[i+1]) {
+				printf("failed to wait for %d\n",
+				       (int)pids[i+1]);
+				exit(1);
+			}
+			if (WEXITSTATUS(status) != 0) {
+				printf("child %d exited with status %d\n",
+				       (int)pids[i+1], WEXITSTATUS(status));
+				exit(1);
+			}
+		}
+		printf("OK\n");
+	}
+
+	return 0;
+}
-- 
cgit