weston/tests/weston-test.c

881 lines
23 KiB
C

/*
* Copyright © 2012 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "config.h"
#include <stdint.h>
#include <stdlib.h>
#include <assert.h>
#include <signal.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
#include <semaphore.h>
#include <libweston/libweston.h>
#include <libweston/weston-log.h>
#include "backend.h"
#include "libweston-internal.h"
#include "compositor/weston.h"
#include "weston-test-server-protocol.h"
#include "weston.h"
#include "weston-testsuite-data.h"
#include "shared/helpers.h"
#include "shared/timespec-util.h"
#include "shared/xalloc.h"
#define MAX_TOUCH_DEVICES 32
struct weston_test {
struct weston_compositor *compositor;
struct wl_listener destroy_listener;
struct weston_log_scope *log;
struct weston_layer layer;
struct weston_seat seat;
struct weston_touch_device *touch_device[MAX_TOUCH_DEVICES];
int nr_touch_devices;
bool is_seat_initialized;
pthread_t client_thread;
struct wl_event_source *client_source;
struct wl_list output_list;
struct wl_listener output_created_listener;
struct wl_listener output_destroyed_listener;
};
struct weston_test_surface {
struct weston_surface *surface;
struct wl_listener surface_destroy_listener;
struct weston_view *view;
int32_t x, y;
struct weston_test *test;
};
struct weston_test_output {
struct weston_test *test;
struct weston_output *output;
struct wl_listener repaint_listener;
struct wl_list link;
};
static void
maybe_breakpoint(struct weston_test *test,
enum weston_test_breakpoint breakpoint,
void *resource)
{
struct wet_test_pending_breakpoint *bp, *tmp;
struct wet_testsuite_data *tsd = weston_compositor_get_test_data(test->compositor);
wl_list_for_each_safe(bp, tmp, &tsd->breakpoints.list, link) {
struct wet_test_active_breakpoint *active_bp;
if (breakpoint != bp->breakpoint)
continue;
if (bp->resource && resource != bp->resource)
continue;
/* Remove this breakpoint from the list; ownership passes to
* the active breakpoint */
wl_list_remove(&bp->link);
/* The active breakpoint and the pending one which triggered it
* are now owned by the client */
active_bp = xzalloc(sizeof(*active_bp));
active_bp->compositor = test->compositor;
active_bp->resource = resource;
active_bp->template_ = bp;
/* Wake the client with the active breakpoint, and wait for it
* to return control */
tsd->breakpoints.active_bp = active_bp;
wet_test_post_sem(&tsd->breakpoints.client_break);
wet_test_wait_sem(&tsd->breakpoints.server_release);
/* Only ever trigger a single breakpoint at a time */
return;
}
}
static void
output_repaint_listener(struct wl_listener *listener, void *data)
{
struct weston_test_output *to =
container_of(listener, struct weston_test_output,
repaint_listener);
struct weston_head *head;
wl_list_for_each(head, &to->output->head_list, output_link) {
maybe_breakpoint(to->test, WESTON_TEST_BREAKPOINT_POST_REPAINT,
head);
}
}
static void
output_created_listener(struct wl_listener *listener, void *data)
{
struct weston_output *output = data;
struct weston_test_output *to = xzalloc(sizeof(*to));
struct weston_test *test =
container_of(listener, struct weston_test,
output_created_listener);
to->test = test;
to->output = output;
to->repaint_listener.notify = output_repaint_listener;
wl_signal_add(&output->frame_signal, &to->repaint_listener);
wl_list_insert(&test->output_list, &to->link);
}
static void
output_destroyed_listener(struct wl_listener *listener, void *data)
{
struct weston_output *output = data;
struct weston_test_output *to, *tmp;
struct weston_test *test =
container_of(listener, struct weston_test,
output_destroyed_listener);
wl_list_for_each_safe(to, tmp, &test->output_list, link) {
if (to->output != output)
continue;
wl_list_remove(&to->repaint_listener.link);
wl_list_remove(&to->link);
free(to);
}
}
static void
touch_device_add(struct weston_test *test)
{
char buf[128];
int i = test->nr_touch_devices;
assert(i < MAX_TOUCH_DEVICES);
assert(!test->touch_device[i]);
snprintf(buf, sizeof buf, "test-touch-device-%d", i);
test->touch_device[i] = weston_touch_create_touch_device(
test->seat.touch_state, buf, NULL, NULL);
test->nr_touch_devices++;
}
static void
touch_device_remove(struct weston_test *test)
{
int i = test->nr_touch_devices - 1;
assert(i >= 0);
assert(test->touch_device[i]);
weston_touch_device_destroy(test->touch_device[i]);
test->touch_device[i] = NULL;
--test->nr_touch_devices;
}
static int
test_seat_init(struct weston_test *test)
{
assert(!test->is_seat_initialized &&
"Trying to add already added test seat");
/* create our own seat */
weston_seat_init(&test->seat, test->compositor, "test-seat");
test->is_seat_initialized = true;
/* add devices */
weston_seat_init_pointer(&test->seat);
if (weston_seat_init_keyboard(&test->seat, NULL) < 0)
return -1;
weston_seat_init_touch(&test->seat);
touch_device_add(test);
return 0;
}
static void
test_seat_release(struct weston_test *test)
{
while (test->nr_touch_devices > 0)
touch_device_remove(test);
assert(test->is_seat_initialized &&
"Trying to release already released test seat");
test->is_seat_initialized = false;
weston_seat_release(&test->seat);
memset(&test->seat, 0, sizeof test->seat);
}
static struct weston_seat *
get_seat(struct weston_test *test)
{
return &test->seat;
}
static void
notify_pointer_position(struct weston_test *test, struct wl_resource *resource)
{
struct weston_seat *seat = get_seat(test);
struct weston_pointer *pointer = weston_seat_get_pointer(seat);
weston_test_send_pointer_position(resource,
wl_fixed_from_double(pointer->pos.c.x),
wl_fixed_from_double(pointer->pos.c.y));
}
static void
test_surface_committed(struct weston_surface *surface,
struct weston_coord_surface new_origin)
{
struct weston_test_surface *test_surface = surface->committed_private;
struct weston_test *test = test_surface->test;
struct weston_coord_global pos;
if (!weston_surface_has_content(surface))
return;
weston_surface_map(test_surface->surface);
pos.c = weston_coord(test_surface->x, test_surface->y);
weston_view_set_position(test_surface->view, pos);
if (wl_list_empty(&test_surface->view->layer_link.link)) {
weston_view_move_to_layer(test_surface->view,
&test->layer.view_list);
}
weston_view_update_transform(test_surface->view);
}
static int
test_surface_get_label(struct weston_surface *surface, char *buf, size_t len)
{
return snprintf(buf, len, "test suite surface");
}
static void
test_surface_destroy(struct weston_test_surface *test_surface)
{
weston_view_destroy(test_surface->view);
test_surface->surface->committed = NULL;
test_surface->surface->committed_private = NULL;
weston_surface_set_label_func(test_surface->surface, NULL);
wl_list_remove(&test_surface->surface_destroy_listener.link);
free(test_surface);
}
static void
test_surface_handle_surface_destroy(struct wl_listener *l, void *data)
{
struct weston_test_surface *test_surface =
wl_container_of(l, test_surface, surface_destroy_listener);
assert(test_surface->surface == data);
test_surface_destroy(test_surface);
}
static struct weston_test_surface *
weston_test_surface_create(struct wl_resource *test_resource,
struct weston_surface *surface)
{
struct wl_client *client = wl_resource_get_client(test_resource);
struct wl_resource *display_resource;
struct weston_test_surface *test_surface;
test_surface = zalloc(sizeof *test_surface);
if (!test_surface)
goto err_post_no_mem;
test_surface->surface = surface;
test_surface->test = wl_resource_get_user_data(test_resource);
test_surface->view = weston_view_create(surface);
if (!test_surface->view)
goto err_free_surface;
/* Protocol does not define this error so abuse wl_display */
display_resource = wl_client_get_object(client, 1);
if (weston_surface_set_role(surface, "weston_test_surface",
display_resource,
WL_DISPLAY_ERROR_INVALID_OBJECT) < 0)
goto err_free_view;
surface->committed_private = test_surface;
surface->committed = test_surface_committed;
weston_surface_set_label_func(surface, test_surface_get_label);
test_surface->surface_destroy_listener.notify =
test_surface_handle_surface_destroy;
wl_signal_add(&surface->destroy_signal,
&test_surface->surface_destroy_listener);
return test_surface;
err_free_view:
weston_view_destroy(test_surface->view);
err_free_surface:
free(test_surface);
err_post_no_mem:
wl_resource_post_no_memory(test_resource);
return NULL;
}
static void
move_surface(struct wl_client *client, struct wl_resource *resource,
struct wl_resource *surface_resource,
int32_t x, int32_t y)
{
struct weston_surface *surface =
wl_resource_get_user_data(surface_resource);
struct weston_test_surface *test_surface;
struct wl_resource *display_resource;
if (surface->committed &&
surface->committed != test_surface_committed) {
display_resource = wl_client_get_object(client, 1);
wl_resource_post_error(display_resource,
WL_DISPLAY_ERROR_INVALID_OBJECT,
"weston_test.move_surface: wl_surface@%u has a role.",
wl_resource_get_id(surface_resource));
return;
}
test_surface = surface->committed_private;
if (!test_surface)
test_surface = weston_test_surface_create(resource, surface);
if (!test_surface)
return;
test_surface->x = x;
test_surface->y = y;
}
static void
move_pointer(struct wl_client *client, struct wl_resource *resource,
uint32_t tv_sec_hi, uint32_t tv_sec_lo, uint32_t tv_nsec,
int32_t x, int32_t y)
{
struct weston_test *test = wl_resource_get_user_data(resource);
struct weston_seat *seat = get_seat(test);
struct weston_pointer *pointer = weston_seat_get_pointer(seat);
struct weston_pointer_motion_event event = { 0 };
struct weston_coord_global pos;
struct timespec time;
pos.c = weston_coord(x, y);
event = (struct weston_pointer_motion_event) {
.mask = WESTON_POINTER_MOTION_REL,
.rel = weston_coord_global_sub(pos, pointer->pos).c,
};
timespec_from_proto(&time, tv_sec_hi, tv_sec_lo, tv_nsec);
notify_motion(seat, &time, &event);
notify_pointer_position(test, resource);
}
static void
send_button(struct wl_client *client, struct wl_resource *resource,
uint32_t tv_sec_hi, uint32_t tv_sec_lo, uint32_t tv_nsec,
int32_t button, uint32_t state)
{
struct timespec time;
struct weston_test *test = wl_resource_get_user_data(resource);
struct weston_seat *seat = get_seat(test);
timespec_from_proto(&time, tv_sec_hi, tv_sec_lo, tv_nsec);
notify_button(seat, &time, button, state);
}
static void
send_axis(struct wl_client *client, struct wl_resource *resource,
uint32_t tv_sec_hi, uint32_t tv_sec_lo, uint32_t tv_nsec,
uint32_t axis, wl_fixed_t value)
{
struct weston_test *test = wl_resource_get_user_data(resource);
struct weston_seat *seat = get_seat(test);
struct timespec time;
struct weston_pointer_axis_event axis_event;
timespec_from_proto(&time, tv_sec_hi, tv_sec_lo, tv_nsec);
axis_event.axis = axis;
axis_event.value = wl_fixed_to_double(value);
axis_event.has_discrete = false;
axis_event.discrete = 0;
notify_axis(seat, &time, &axis_event);
}
static void
activate_surface(struct wl_client *client, struct wl_resource *resource,
struct wl_resource *surface_resource)
{
struct weston_surface *surface = surface_resource ?
wl_resource_get_user_data(surface_resource) : NULL;
struct weston_test *test = wl_resource_get_user_data(resource);
struct weston_seat *seat;
struct weston_keyboard *keyboard;
seat = get_seat(test);
keyboard = weston_seat_get_keyboard(seat);
if (surface) {
weston_seat_set_keyboard_focus(seat, surface);
notify_keyboard_focus_in(seat, &keyboard->keys,
STATE_UPDATE_AUTOMATIC);
}
else {
notify_keyboard_focus_out(seat);
weston_seat_set_keyboard_focus(seat, surface);
}
}
static void
send_key(struct wl_client *client, struct wl_resource *resource,
uint32_t tv_sec_hi, uint32_t tv_sec_lo, uint32_t tv_nsec,
uint32_t key, enum wl_keyboard_key_state state)
{
struct weston_test *test = wl_resource_get_user_data(resource);
struct weston_seat *seat = get_seat(test);
struct timespec time;
timespec_from_proto(&time, tv_sec_hi, tv_sec_lo, tv_nsec);
notify_key(seat, &time, key, state, STATE_UPDATE_AUTOMATIC);
}
static void
device_release(struct wl_client *client,
struct wl_resource *resource, const char *device)
{
struct weston_test *test = wl_resource_get_user_data(resource);
struct weston_seat *seat = get_seat(test);
if (strcmp(device, "pointer") == 0) {
weston_seat_release_pointer(seat);
} else if (strcmp(device, "keyboard") == 0) {
weston_seat_release_keyboard(seat);
} else if (strcmp(device, "touch") == 0) {
touch_device_remove(test);
weston_seat_release_touch(seat);
} else if (strcmp(device, "seat") == 0) {
test_seat_release(test);
} else {
assert(0 && "Unsupported device");
}
}
static void
device_add(struct wl_client *client,
struct wl_resource *resource, const char *device)
{
struct weston_test *test = wl_resource_get_user_data(resource);
struct weston_seat *seat = get_seat(test);
if (strcmp(device, "pointer") == 0) {
weston_seat_init_pointer(seat);
} else if (strcmp(device, "keyboard") == 0) {
weston_seat_init_keyboard(seat, NULL);
} else if (strcmp(device, "touch") == 0) {
weston_seat_init_touch(seat);
touch_device_add(test);
} else if (strcmp(device, "seat") == 0) {
test_seat_init(test);
} else {
assert(0 && "Unsupported device");
}
}
static void
send_touch(struct wl_client *client, struct wl_resource *resource,
uint32_t tv_sec_hi, uint32_t tv_sec_lo, uint32_t tv_nsec,
int32_t touch_id, wl_fixed_t x, wl_fixed_t y, uint32_t touch_type)
{
struct weston_test *test = wl_resource_get_user_data(resource);
struct weston_touch_device *device = test->touch_device[0];
struct timespec time;
struct weston_coord_global pos;
assert(device);
timespec_from_proto(&time, tv_sec_hi, tv_sec_lo, tv_nsec);
if (touch_type == WL_TOUCH_UP) {
if (x != 0 || y != 0) {
wl_resource_post_error(resource,
WESTON_TEST_ERROR_TOUCH_UP_WITH_COORDINATE,
"Test protocol sent valid "
"coordinates with WL_TOUCH_UP");
return;
}
notify_touch(device, &time, touch_id, NULL, touch_type);
} else {
pos.c = weston_coord_from_fixed(x, y);
notify_touch(device, &time, touch_id, &pos, touch_type);
}
}
static void
client_break(struct wl_client *client, struct wl_resource *resource,
uint32_t _breakpoint, uint32_t resource_id)
{
struct weston_test *test = wl_resource_get_user_data(resource);
struct wet_testsuite_data *tsd = weston_compositor_get_test_data(test->compositor);
struct wet_test_pending_breakpoint *bp;
enum weston_test_breakpoint breakpoint = _breakpoint;
bp = calloc(1, sizeof(*bp));
bp->breakpoint = breakpoint;
if (resource_id != 0) {
struct wl_resource *resource =
wl_client_get_object(client, resource_id);
assert(resource);
bp->resource = wl_resource_get_user_data(resource);
}
wl_list_insert(&tsd->breakpoints.list, &bp->link);
}
static const struct weston_test_interface test_implementation = {
move_surface,
move_pointer,
send_button,
send_axis,
activate_surface,
send_key,
device_release,
device_add,
send_touch,
client_break,
};
static void
destroy_test(struct wl_resource *resource)
{
struct weston_test *test = wl_resource_get_user_data(resource);
struct wet_testsuite_data *tsd = weston_compositor_get_test_data(test->compositor);
assert(tsd->wl_client);
tsd->wl_client = NULL;
}
static void
bind_test(struct wl_client *client, void *data, uint32_t version, uint32_t id)
{
struct weston_test *test = data;
struct wet_testsuite_data *tsd = weston_compositor_get_test_data(test->compositor);
struct wl_resource *resource;
resource = wl_resource_create(client, &weston_test_interface, 1, id);
if (!resource) {
wl_client_post_no_memory(client);
return;
}
wl_resource_set_implementation(resource,
&test_implementation, test,
destroy_test);
/* There can only be one wl_client bound */
assert(!tsd->wl_client);
tsd->wl_client = client;
notify_pointer_position(test, resource);
}
static void
client_thread_cleanup(void *data_)
{
struct wet_testsuite_data *data = data_;
close(data->thread_event_pipe);
data->thread_event_pipe = -1;
}
static void *
client_thread_routine(void *data_)
{
struct wet_testsuite_data *data = data_;
pthread_setname_np(pthread_self(), "client");
pthread_cleanup_push(client_thread_cleanup, data);
data->run(data);
pthread_cleanup_pop(true);
return NULL;
}
static void
client_thread_join(struct weston_test *test)
{
assert(test->client_source);
pthread_join(test->client_thread, NULL);
wl_event_source_remove(test->client_source);
test->client_source = NULL;
weston_log_scope_printf(test->log, "Test thread reaped.\n");
}
static int
handle_client_thread_event(int fd, uint32_t mask, void *data_)
{
struct weston_test *test = data_;
weston_log_scope_printf(test->log,
"Received thread event mask 0x%x\n", mask);
if (mask != WL_EVENT_HANGUP)
weston_log("%s: unexpected event %u\n", __func__, mask);
client_thread_join(test);
weston_compositor_exit(test->compositor);
return 0;
}
static int
create_client_thread(struct weston_test *test, struct wet_testsuite_data *data)
{
struct wl_event_loop *loop;
int pipefd[2] = { -1, -1 };
sigset_t saved;
sigset_t blocked;
int ret;
weston_log_scope_printf(test->log, "Creating a thread for running tests...\n");
if (pipe2(pipefd, O_CLOEXEC | O_NONBLOCK) < 0) {
weston_log("Creating pipe for a client thread failed: %s\n",
strerror(errno));
return -1;
}
loop = wl_display_get_event_loop(test->compositor->wl_display);
test->client_source = wl_event_loop_add_fd(loop, pipefd[0],
WL_EVENT_READABLE,
handle_client_thread_event,
test);
close(pipefd[0]);
if (!test->client_source) {
weston_log("Adding client thread fd to event loop failed.\n");
goto out_pipe;
}
data->thread_event_pipe = pipefd[1];
ret = sem_init(&data->breakpoints.client_break, 0, 0);
if (ret != 0) {
weston_log("Creating breakpoint semaphore failed: %s (%d)\n",
strerror(errno), errno);
goto out_source;
}
ret = sem_init(&data->breakpoints.server_release, 0, 0);
if (ret != 0) {
weston_log("Creating release semaphore failed: %s (%d)\n",
strerror(errno), errno);
goto out_source;
}
/* Ensure we don't accidentally get signals to the thread. */
sigfillset(&blocked);
sigdelset(&blocked, SIGSEGV);
sigdelset(&blocked, SIGFPE);
sigdelset(&blocked, SIGILL);
sigdelset(&blocked, SIGCONT);
sigdelset(&blocked, SIGSYS);
if (pthread_sigmask(SIG_BLOCK, &blocked, &saved) != 0)
goto out_source;
ret = pthread_create(&test->client_thread, NULL,
client_thread_routine, data);
pthread_sigmask(SIG_SETMASK, &saved, NULL);
if (ret != 0) {
weston_log("Creating client thread failed: %s (%d)\n",
strerror(ret), ret);
goto out_source;
}
return 0;
out_source:
data->thread_event_pipe = -1;
wl_event_source_remove(test->client_source);
test->client_source = NULL;
out_pipe:
close(pipefd[1]);
return -1;
}
static void
idle_launch_testsuite(void *test_)
{
struct weston_test *test = test_;
struct wet_testsuite_data *data = weston_compositor_get_test_data(test->compositor);
if (!data)
return;
wl_list_init(&data->breakpoints.list);
switch (data->type) {
case TEST_TYPE_CLIENT:
if (create_client_thread(test, data) < 0) {
weston_log("Error: creating client thread for test suite failed.\n");
weston_compositor_exit_with_code(test->compositor,
RESULT_HARD_ERROR);
}
break;
case TEST_TYPE_PLUGIN:
data->compositor = test->compositor;
weston_log_scope_printf(test->log,
"Running tests from idle handler...\n");
data->run(data);
weston_compositor_exit(test->compositor);
break;
case TEST_TYPE_STANDALONE:
weston_log("Error: unknown test internal type %d.\n",
data->type);
weston_compositor_exit_with_code(test->compositor,
RESULT_HARD_ERROR);
}
}
static void
handle_compositor_destroy(struct wl_listener *listener,
void *weston_compositor)
{
struct weston_compositor *compositor = weston_compositor;
struct wet_testsuite_data *data;
struct weston_test *test;
struct weston_output *output;
test = wl_container_of(listener, test, destroy_listener);
data = weston_compositor_get_test_data(test->compositor);
wl_list_remove(&test->destroy_listener.link);
wl_list_remove(&test->output_created_listener.link);
wl_list_remove(&test->output_destroyed_listener.link);
wl_list_for_each(output, &compositor->output_list, link) {
output_destroyed_listener(&test->output_destroyed_listener,
output);
}
if (test->client_source) {
weston_log_scope_printf(test->log, "Cancelling client thread...\n");
pthread_cancel(test->client_thread);
client_thread_join(test);
}
if (test->is_seat_initialized)
test_seat_release(test);
data->wl_client = NULL;
wl_list_remove(&test->layer.view_list.link);
wl_list_remove(&test->layer.link);
weston_log_scope_destroy(test->log);
free(test);
}
WL_EXPORT int
wet_module_init(struct weston_compositor *ec,
int *argc, char *argv[])
{
struct weston_test *test;
struct weston_output *output;
struct wl_event_loop *loop;
test = zalloc(sizeof *test);
if (test == NULL)
return -1;
if (!weston_compositor_add_destroy_listener_once(ec,
&test->destroy_listener,
handle_compositor_destroy)) {
free(test);
return 0;
}
test->compositor = ec;
weston_layer_init(&test->layer, ec);
weston_layer_set_position(&test->layer, WESTON_LAYER_POSITION_CURSOR - 1);
wl_list_init(&test->output_list);
wl_list_for_each(output, &ec->output_list, link)
output_created_listener(&test->output_created_listener, output);
test->output_created_listener.notify = output_created_listener;
wl_signal_add(&ec->output_created_signal, &test->output_created_listener);
test->output_destroyed_listener.notify = output_destroyed_listener;
wl_signal_add(&ec->output_destroyed_signal,
&test->output_destroyed_listener);
test->log = weston_compositor_add_log_scope(ec, "test-harness-plugin",
"weston-test plugin's own actions",
NULL, NULL, NULL);
if (wl_global_create(ec->wl_display, &weston_test_interface, 1,
test, bind_test) == NULL)
goto out_free;
if (test_seat_init(test) == -1)
goto out_free;
loop = wl_display_get_event_loop(ec->wl_display);
wl_event_loop_add_idle(loop, idle_launch_testsuite, test);
return 0;
out_free:
wl_list_remove(&test->destroy_listener.link);
free(test);
return -1;
}