s3: Add two notify benchmark tests

1 files changed, 720 insertions, 0 deletions

diff --git a/source3/torture/test_notify.c b/source3/torture/test_notify.c
new file mode 100644
index 0000000000..8d1e969588
--- /dev/null
+++ b/source3/torture/test_notify.c
@@ -0,0 +1,720 @@
+/*
+   Unix SMB/CIFS implementation.
+   Scalability test for notifies
+   Copyright (C) Volker Lendecke 2012
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "torture/proto.h"
+#include "libsmb/libsmb.h"
+#include "lib/util/tevent_ntstatus.h"
+#include "libcli/security/security.h"
+#include "lib/tevent_barrier.h"
+
+extern int torture_nprocs, torture_numops;
+
+struct wait_for_one_notify_state {
+	struct tevent_context *ev;
+	struct cli_state *cli;
+	uint16_t dnum;
+	uint32_t filter;
+	bool recursive;
+	unsigned *num_notifies;
+};
+
+static void wait_for_one_notify_opened(struct tevent_req *subreq);
+static void wait_for_one_notify_chkpath_done(struct tevent_req *subreq);
+static void wait_for_one_notify_done(struct tevent_req *subreq);
+static void wait_for_one_notify_closed(struct tevent_req *subreq);
+
+static struct tevent_req *wait_for_one_notify_send(TALLOC_CTX *mem_ctx,
+						   struct tevent_context *ev,
+						   struct cli_state *cli,
+						   const char *path,
+						   uint32_t filter,
+						   bool recursive,
+						   unsigned *num_notifies)
+{
+	struct tevent_req *req, *subreq;
+	struct wait_for_one_notify_state *state;
+
+	req = tevent_req_create(mem_ctx, &state,
+				struct wait_for_one_notify_state);
+	if (req == NULL) {
+		return NULL;
+	}
+	state->ev = ev;
+	state->cli = cli;
+	state->filter = filter;
+	state->recursive = recursive;
+	state->num_notifies = num_notifies;
+
+	subreq = cli_ntcreate_send(
+		state, state->ev, state->cli, path, 0,
+		MAXIMUM_ALLOWED_ACCESS,
+		0, FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
+		FILE_OPEN, FILE_DIRECTORY_FILE, 0);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, wait_for_one_notify_opened, req);
+	return req;
+}
+
+static void wait_for_one_notify_opened(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct wait_for_one_notify_state *state = tevent_req_data(
+		req, struct wait_for_one_notify_state);
+	NTSTATUS status;
+
+	status = cli_ntcreate_recv(subreq, &state->dnum);
+	TALLOC_FREE(subreq);
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+	subreq = cli_notify_send(state, state->ev, state->cli, state->dnum,
+				 0xffff, state->filter, state->recursive);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, wait_for_one_notify_done, req);
+
+	/*
+	 * To make sure the notify received at the server, we do another no-op
+	 * that is replied to.
+	 */
+	subreq = cli_chkpath_send(state, state->ev, state->cli, "\\");
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, wait_for_one_notify_chkpath_done, req);
+}
+
+static void wait_for_one_notify_chkpath_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct wait_for_one_notify_state *state = tevent_req_data(
+		req, struct wait_for_one_notify_state);
+	NTSTATUS status;
+
+	status = cli_chkpath_recv(subreq);
+	TALLOC_FREE(subreq);
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+	*state->num_notifies += 1;
+}
+
+static void wait_for_one_notify_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct wait_for_one_notify_state *state = tevent_req_data(
+		req, struct wait_for_one_notify_state);
+	uint32_t num_changes;
+	struct notify_change *changes;
+	NTSTATUS status;
+
+	status = cli_notify_recv(subreq, state, &num_changes, &changes);
+	TALLOC_FREE(subreq);
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+	subreq = cli_close_send(state, state->ev, state->cli, state->dnum);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, wait_for_one_notify_closed, req);
+}
+
+static void wait_for_one_notify_closed(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct wait_for_one_notify_state *state = tevent_req_data(
+		req, struct wait_for_one_notify_state);
+	NTSTATUS status;
+
+	status = cli_close_recv(subreq);
+	TALLOC_FREE(subreq);
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+	*state->num_notifies -= 1;
+	tevent_req_done(req);
+}
+
+static NTSTATUS wait_for_one_notify_recv(struct tevent_req *req)
+{
+	return tevent_req_simple_recv_ntstatus(req);
+}
+
+static void notify_bench2_done(struct tevent_req *req);
+
+bool run_notify_bench2(int dummy)
+{
+	struct cli_state *cli;
+	struct cli_state **clis;
+	struct tevent_context *ev;
+	unsigned num_notifies = 0;
+	NTSTATUS status;
+	int i;
+
+	if (!torture_open_connection(&cli, 0)) {
+		return false;
+	}
+
+	printf("starting notify bench 2 test\n");
+
+	cli_rmdir(cli, "\\notify.dir\\subdir");
+	cli_rmdir(cli, "\\notify.dir");
+
+	status = cli_mkdir(cli, "\\notify.dir");
+	if (!NT_STATUS_IS_OK(status)) {
+		printf("mkdir failed : %s\n", nt_errstr(status));
+		return false;
+	}
+
+	clis = talloc_array(talloc_tos(), struct cli_state *, torture_nprocs);
+	if (clis == NULL) {
+		printf("talloc failed\n");
+		return false;
+	}
+
+	ev = tevent_context_init(talloc_tos());
+	if (ev == NULL) {
+		printf("tevent_context_create failed\n");
+		return false;
+	}
+
+	for (i=0; i<torture_nprocs; i++) {
+		int j;
+		if (!torture_open_connection(&clis[i], i)) {
+			return false;
+		}
+
+		for (j=0; j<torture_numops; j++) {
+			struct tevent_req *req;
+			req = wait_for_one_notify_send(
+				talloc_tos(), ev, clis[i], "\\notify.dir",
+				FILE_NOTIFY_CHANGE_ALL, true,
+				&num_notifies);
+			if (req == NULL) {
+				printf("wait_for_one_notify_send failed\n");
+				return false;
+			}
+			tevent_req_set_callback(req, notify_bench2_done, NULL);
+		}
+	}
+
+	while (num_notifies < torture_nprocs * torture_numops) {
+		int ret;
+		ret = tevent_loop_once(ev);
+		if (ret != 0) {
+			printf("tevent_loop_once failed: %s\n",
+			       strerror(errno));
+			return false;
+		}
+	}
+
+	cli_mkdir(cli, "\\notify.dir\\subdir");
+
+	while (num_notifies > 0) {
+		int ret;
+		ret = tevent_loop_once(ev);
+		if (ret != 0) {
+			printf("tevent_loop_once failed: %s\n",
+			       strerror(errno));
+			return false;
+		}
+	}
+
+	return true;
+}
+
+static void notify_bench2_done(struct tevent_req *req)
+{
+	NTSTATUS status;
+
+	status = wait_for_one_notify_recv(req);
+	TALLOC_FREE(req);
+	if (!NT_STATUS_IS_OK(status)) {
+		printf("wait_for_one_notify returned %s\n",
+		       nt_errstr(status));
+	}
+}
+
+/*
+ * This test creates a subdirectory. It then waits on a barrier before the
+ * notify is sent. Then it creates the notify. It then waits for another
+ * barrier, so that all of the notifies have gone through. It then creates
+ * another subdirectory, which will trigger notifications to be sent. When the
+ * notifies have been received, it waits once more before everything is
+ * cleaned up.
+ */
+
+struct notify_bench3_state {
+	struct tevent_context *ev;
+	struct cli_state *cli;
+	const char *dir;
+	uint16_t dnum;
+	const char *subdir_path;
+	uint16_t subdir_dnum;
+	int wait_timeout;
+	struct tevent_barrier *small;
+	struct tevent_barrier *large;
+};
+
+static void notify_bench3_mkdir1_done(struct tevent_req *subreq);
+static void notify_bench3_before_notify(struct tevent_req *subreq);
+static void notify_bench3_chkpath_done(struct tevent_req *subreq);
+static void notify_bench3_before_mkdir2(struct tevent_req *subreq);
+static void notify_bench3_notify_done(struct tevent_req *subreq);
+static void notify_bench3_notifies_done(struct tevent_req *subreq);
+static void notify_bench3_mksubdir_done(struct tevent_req *subreq);
+static void notify_bench3_before_close_subdir(struct tevent_req *subreq);
+static void notify_bench3_close_subdir_done(struct tevent_req *subreq);
+static void notify_bench3_deleted_subdir(struct tevent_req *subreq);
+static void notify_bench3_deleted_subdirs(struct tevent_req *subreq);
+static void notify_bench3_del_on_close_set(struct tevent_req *subreq);
+static void notify_bench3_closed(struct tevent_req *subreq);
+
+static struct tevent_req *notify_bench3_send(
+	TALLOC_CTX *mem_ctx, struct tevent_context *ev, struct cli_state *cli,
+	const char *dir, const char *subdir_path,
+	struct tevent_barrier *small, struct tevent_barrier *large)
+{
+	struct tevent_req *req, *subreq;
+	struct notify_bench3_state *state;
+
+	req = tevent_req_create(mem_ctx, &state, struct notify_bench3_state);
+	if (req == NULL) {
+		return NULL;
+	}
+	state->ev = ev;
+	state->cli = cli;
+	state->dir = dir;
+	state->subdir_path = subdir_path;
+	state->small = small;
+	state->large = large;
+
+	subreq = cli_ntcreate_send(
+		state, state->ev, state->cli, state->dir, 0,
+		MAXIMUM_ALLOWED_ACCESS, 0,
+		FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
+		FILE_OPEN_IF, FILE_DIRECTORY_FILE, 0);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, notify_bench3_mkdir1_done, req);
+	return req;
+}
+
+static void notify_bench3_mkdir1_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct notify_bench3_state *state = tevent_req_data(
+		req, struct notify_bench3_state);
+	NTSTATUS status;
+
+	status = cli_ntcreate_recv(subreq, &state->dnum);
+	TALLOC_FREE(subreq);
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+	subreq = tevent_barrier_wait_send(state, state->ev, state->small);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, notify_bench3_before_notify, req);
+}
+
+static void notify_bench3_before_notify(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct notify_bench3_state *state = tevent_req_data(
+		req, struct notify_bench3_state);
+	int ret;
+
+	ret = tevent_barrier_wait_recv(subreq);
+	TALLOC_FREE(subreq);
+	if (ret != 0) {
+		tevent_req_nterror(req, map_nt_error_from_unix(ret));
+		return;
+	}
+	subreq = cli_notify_send(state, state->ev, state->cli, state->dnum,
+				 0xffff, FILE_NOTIFY_CHANGE_ALL, true);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, notify_bench3_notify_done, req);
+
+	/*
+	 * To make sure the notify received at the server, we do another no-op
+	 * that is replied to.
+	 */
+	subreq = cli_chkpath_send(state, state->ev, state->cli, "\\");
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, notify_bench3_chkpath_done, req);
+}
+
+static void notify_bench3_notify_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct notify_bench3_state *state = tevent_req_data(
+		req, struct notify_bench3_state);
+	uint32_t num_changes;
+	struct notify_change *changes;
+	NTSTATUS status;
+
+	status = cli_notify_recv(subreq, state, &num_changes, &changes);
+	TALLOC_FREE(subreq);
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+	subreq = tevent_barrier_wait_send(state, state->ev, state->large);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, notify_bench3_notifies_done, req);
+}
+
+static void notify_bench3_notifies_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	int ret;
+
+	ret = tevent_barrier_wait_recv(subreq);
+	TALLOC_FREE(subreq);
+	if (ret != 0) {
+		tevent_req_nterror(req, map_nt_error_from_unix(ret));
+		return;
+	}
+}
+
+static void notify_bench3_chkpath_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct notify_bench3_state *state = tevent_req_data(
+		req, struct notify_bench3_state);
+	NTSTATUS status;
+
+	status = cli_chkpath_recv(subreq);
+	TALLOC_FREE(subreq);
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+	if (state->subdir_path == NULL) {
+		return;
+	}
+	subreq = tevent_barrier_wait_send(state, state->ev, state->small);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, notify_bench3_before_mkdir2, req);
+}
+
+static void notify_bench3_before_mkdir2(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct notify_bench3_state *state = tevent_req_data(
+		req, struct notify_bench3_state);
+	int ret;
+
+	ret = tevent_barrier_wait_recv(subreq);
+	TALLOC_FREE(subreq);
+	if (ret != 0) {
+		tevent_req_nterror(req, map_nt_error_from_unix(ret));
+		return;
+	}
+	subreq =  cli_ntcreate_send(
+		state, state->ev, state->cli, state->subdir_path, 0,
+		MAXIMUM_ALLOWED_ACCESS,	0,
+		FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
+		FILE_CREATE,
+		FILE_DIRECTORY_FILE, 0);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, notify_bench3_mksubdir_done, req);
+}
+
+static void notify_bench3_mksubdir_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct notify_bench3_state *state = tevent_req_data(
+		req, struct notify_bench3_state);
+	NTSTATUS status;
+
+	status = cli_ntcreate_recv(subreq, &state->subdir_dnum);
+	TALLOC_FREE(subreq);
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+	subreq = tevent_barrier_wait_send(state, state->ev, state->large);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, notify_bench3_before_close_subdir,
+				req);
+}
+
+static void notify_bench3_before_close_subdir(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct notify_bench3_state *state = tevent_req_data(
+		req, struct notify_bench3_state);
+	int ret;
+
+	ret = tevent_barrier_wait_recv(subreq);
+	TALLOC_FREE(subreq);
+	if (ret != 0) {
+		tevent_req_nterror(req, map_nt_error_from_unix(ret));
+		return;
+	}
+	subreq = cli_close_send(state, state->ev, state->cli,
+				state->subdir_dnum);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, notify_bench3_close_subdir_done, req);
+}
+
+static void notify_bench3_close_subdir_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct notify_bench3_state *state = tevent_req_data(
+		req, struct notify_bench3_state);
+	NTSTATUS status;
+
+	status = cli_close_recv(subreq);
+	TALLOC_FREE(subreq);
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+	subreq = cli_rmdir_send(state, state->ev, state->cli,
+				state->subdir_path);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, notify_bench3_deleted_subdir, req);
+}
+
+static void notify_bench3_deleted_subdir(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct notify_bench3_state *state = tevent_req_data(
+		req, struct notify_bench3_state);
+	NTSTATUS status;
+
+	status = cli_rmdir_recv(subreq);
+	TALLOC_FREE(subreq);
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+	subreq = tevent_barrier_wait_send(state, state->ev, state->small);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, notify_bench3_deleted_subdirs, req);
+}
+
+static void notify_bench3_deleted_subdirs(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct notify_bench3_state *state = tevent_req_data(
+		req, struct notify_bench3_state);
+	int ret;
+
+	ret = tevent_barrier_wait_recv(subreq);
+	TALLOC_FREE(subreq);
+	if (ret != 0) {
+		tevent_req_nterror(req, map_nt_error_from_unix(ret));
+		return;
+	}
+	subreq = cli_nt_delete_on_close_send(state, state->ev, state->cli,
+					     state->dnum, true);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, notify_bench3_del_on_close_set, req);
+}
+
+static void notify_bench3_del_on_close_set(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct notify_bench3_state *state = tevent_req_data(
+		req, struct notify_bench3_state);
+	NTSTATUS status;
+
+	status = cli_nt_delete_on_close_recv(subreq);
+	TALLOC_FREE(subreq);
+	subreq = cli_close_send(state, state->ev, state->cli, state->dnum);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, notify_bench3_closed, req);
+}
+
+static void notify_bench3_closed(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	NTSTATUS status;
+
+	status = cli_close_recv(subreq);
+	TALLOC_FREE(subreq);
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+	tevent_req_done(req);
+}
+
+static NTSTATUS notify_bench3_recv(struct tevent_req *req)
+{
+	return tevent_req_simple_recv_ntstatus(req);
+}
+
+static void notify_bench3_done(struct tevent_req *req)
+{
+	unsigned *num_done = (unsigned *)tevent_req_callback_data_void(req);
+	NTSTATUS status;
+
+	status = notify_bench3_recv(req);
+	TALLOC_FREE(req);
+	if (!NT_STATUS_IS_OK(status)) {
+		d_printf("notify_bench3 returned %s\n", nt_errstr(status));
+	}
+	*num_done += 1;
+}
+
+static void notify_bench3_barrier_cb(void *private_data)
+{
+	struct timeval *ts = (struct timeval *)private_data;
+	struct timeval now;
+
+	GetTimeOfDay(&now);
+	printf("barrier triggered: %f\n", timeval_elapsed2(ts, &now));
+	GetTimeOfDay(ts);
+}
+
+bool run_notify_bench3(int dummy)
+{
+	struct cli_state **clis;
+	struct tevent_context *ev;
+	struct tevent_barrier *small;
+	struct tevent_barrier *large;
+	unsigned i, j;
+	unsigned num_done = 0;
+	struct timeval ts, now;
+
+	clis = talloc_array(talloc_tos(), struct cli_state *, torture_nprocs);
+	if (clis == NULL) {
+		printf("talloc failed\n");
+		return false;
+	}
+
+	GetTimeOfDay(&ts);
+
+	small = tevent_barrier_init(
+		talloc_tos(), torture_nprocs * torture_numops,
+		notify_bench3_barrier_cb, &ts);
+	if (small == NULL) {
+		return false;
+	}
+
+	large = tevent_barrier_init(
+		talloc_tos(), 2 * torture_nprocs * torture_numops,
+		notify_bench3_barrier_cb, &ts);
+	if (large == NULL) {
+		return false;
+	}
+
+	ev = tevent_context_init(talloc_tos());
+	if (ev == NULL) {
+		printf("tevent_context_create failed\n");
+		return false;
+	}
+
+	for (i=0; i<torture_nprocs; i++) {
+		if (!torture_open_connection(&clis[i], i)) {
+			return false;
+		}
+	}
+
+	for (i=0; i<torture_nprocs; i++) {
+		for (j=0; j<torture_numops; j++) {
+			int idx = i * torture_numops + j;
+			struct tevent_req *req;
+			char *dirname, *subdirname;
+
+			dirname = talloc_asprintf(
+				talloc_tos(), "\\dir%.8d", idx);
+			if (dirname == NULL) {
+				return false;
+			}
+			subdirname = talloc_asprintf(
+				talloc_tos(), "\\dir%.8d\\subdir",
+				(idx + torture_numops + 1) %
+				(torture_nprocs * torture_numops));
+			if (subdirname == NULL) {
+				return false;
+			}
+
+			req = notify_bench3_send(
+				talloc_tos(), ev, clis[i], dirname,
+				subdirname, small, large);
+			if (req == NULL) {
+				return false;
+			}
+			tevent_req_set_callback(req, notify_bench3_done,
+						&num_done);
+		}
+	}
+
+	while (num_done < torture_nprocs * torture_numops) {
+		int ret;
+		ret = tevent_loop_once(ev);
+		if (ret != 0) {
+			printf("tevent_loop_once failed: %s\n",
+			       strerror(errno));
+			return false;
+		}
+	}
+
+	GetTimeOfDay(&now);
+	printf("turndow: %f\n", timeval_elapsed2(&ts, &now));
+	TALLOC_FREE(small);
+	TALLOC_FREE(large);
+	return true;
+}