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wlr_xwayland: preserve end of struct on restart 

This is more robust than trying to recopy a few fields.
Note: wlr_xwayland->events.ready now resets after each trigger, so one can
hook on it again and be called when restart is ready
This commit is contained in:
Dominique Martinet 2017-12-29 20:50:50 +01:00
parent a477e5d302
commit ec952931a1
2 changed files with 15 additions and 25 deletions
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6
include/wlr/xwayland.h
View File

@ -22,16 +22,18 @@ struct wlr_xwayland {
struct wl_client *client; struct wl_client *client;
struct wl_display *wl_display; struct wl_display *wl_display;
struct wlr_compositor *compositor; struct wlr_compositor *compositor;
struct wlr_seat *seat;
time_t server_start; time_t server_start;
struct wl_event_source *sigusr1_source; struct wl_event_source *sigusr1_source;
struct wl_listener client_destroy; struct wl_listener client_destroy;
struct wl_listener display_destroy; struct wl_listener display_destroy;
struct wl_listener seat_destroy;
struct wlr_xwm *xwm; struct wlr_xwm *xwm;
struct wlr_xwayland_cursor *cursor; struct wlr_xwayland_cursor *cursor;
/* Anything above seat is reset on Xwayland restart, rest is conserved */
struct wlr_seat *seat;
struct wl_listener seat_destroy;
struct { struct {
struct wl_signal ready; struct wl_signal ready;
struct wl_signal new_surface; struct wl_signal new_surface;

34
xwayland/xwayland.c
View File

@ -134,7 +134,6 @@ static void wlr_xwayland_finish(struct wlr_xwayland *wlr_xwayland) {
free(wlr_xwayland->cursor); free(wlr_xwayland->cursor);
} }
wlr_xwayland_set_seat(wlr_xwayland, NULL);
xwm_destroy(wlr_xwayland->xwm); xwm_destroy(wlr_xwayland->xwm);
if (wlr_xwayland->client) { if (wlr_xwayland->client) {
@ -163,21 +162,13 @@ static void wlr_xwayland_finish(struct wlr_xwayland *wlr_xwayland) {
*/ */
} }
static bool wlr_xwayland_init(struct wlr_xwayland *wlr_xwayland, static bool wlr_xwayland_start(struct wlr_xwayland *wlr_xwayland,
struct wl_display *wl_display, struct wlr_compositor *compositor); struct wl_display *wl_display, struct wlr_compositor *compositor);
static void handle_client_destroy(struct wl_listener *listener, void *data) { static void handle_client_destroy(struct wl_listener *listener, void *data) {
struct wlr_xwayland *wlr_xwayland = struct wlr_xwayland *wlr_xwayland =
wl_container_of(listener, wlr_xwayland, client_destroy); wl_container_of(listener, wlr_xwayland, client_destroy);
struct wlr_seat *seat = wlr_xwayland->seat;
struct wl_list new_surface_signals;
struct wl_listener *new_surface_listener, *next;
wl_list_init(&new_surface_signals);
wl_list_for_each_safe(new_surface_listener, next, &wlr_xwayland->events.new_surface.listener_list, link) {
wl_list_remove(&new_surface_listener->link);
wl_list_insert(&new_surface_signals, &new_surface_listener->link);
}
// Don't call client destroy: it's being destroyed already // Don't call client destroy: it's being destroyed already
wlr_xwayland->client = NULL; wlr_xwayland->client = NULL;
wl_list_remove(&wlr_xwayland->client_destroy.link); wl_list_remove(&wlr_xwayland->client_destroy.link);
@ -186,15 +177,8 @@ static void handle_client_destroy(struct wl_listener *listener, void *data) {
if (time(NULL) - wlr_xwayland->server_start > 5) { if (time(NULL) - wlr_xwayland->server_start > 5) {
wlr_log(L_INFO, "Restarting Xwayland"); wlr_log(L_INFO, "Restarting Xwayland");
wlr_xwayland_init(wlr_xwayland, wlr_xwayland->wl_display, wlr_xwayland_start(wlr_xwayland, wlr_xwayland->wl_display,
wlr_xwayland->compositor); wlr_xwayland->compositor);
wl_list_for_each_safe(new_surface_listener, next, &new_surface_signals, link) {
wl_list_remove(&new_surface_listener->link);
wl_signal_add(&wlr_xwayland->events.new_surface, new_surface_listener);
}
if (seat) {
wlr_xwayland_set_seat(wlr_xwayland, seat);
}
} }
} }
@ -254,20 +238,20 @@ static int xserver_handle_ready(int signal_number, void *data) {
setenv("DISPLAY", display_name, true); setenv("DISPLAY", display_name, true);
wl_signal_emit(&wlr_xwayland->events.ready, wlr_xwayland); wl_signal_emit(&wlr_xwayland->events.ready, wlr_xwayland);
/* ready is a one-shot signal, fire and forget */
wl_signal_init(&wlr_xwayland->events.ready);
return 1; /* wayland event loop dispatcher's count */ return 1; /* wayland event loop dispatcher's count */
} }
static bool wlr_xwayland_init(struct wlr_xwayland *wlr_xwayland, static bool wlr_xwayland_start(struct wlr_xwayland *wlr_xwayland,
struct wl_display *wl_display, struct wlr_compositor *compositor) { struct wl_display *wl_display, struct wlr_compositor *compositor) {
memset(wlr_xwayland, 0, sizeof(struct wlr_xwayland)); memset(wlr_xwayland, 0, offsetof(struct wlr_xwayland, seat));
wlr_xwayland->wl_display = wl_display; wlr_xwayland->wl_display = wl_display;
wlr_xwayland->compositor = compositor; wlr_xwayland->compositor = compositor;
wlr_xwayland->x_fd[0] = wlr_xwayland->x_fd[1] = -1; wlr_xwayland->x_fd[0] = wlr_xwayland->x_fd[1] = -1;
wlr_xwayland->wl_fd[0] = wlr_xwayland->wl_fd[1] = -1; wlr_xwayland->wl_fd[0] = wlr_xwayland->wl_fd[1] = -1;
wlr_xwayland->wm_fd[0] = wlr_xwayland->wm_fd[1] = -1; wlr_xwayland->wm_fd[0] = wlr_xwayland->wm_fd[1] = -1;
wl_signal_init(&wlr_xwayland->events.new_surface);
wl_signal_init(&wlr_xwayland->events.ready);
wlr_xwayland->display_destroy.notify = handle_display_destroy; wlr_xwayland->display_destroy.notify = handle_display_destroy;
wl_display_add_destroy_listener(wl_display, &wlr_xwayland->display_destroy); wl_display_add_destroy_listener(wl_display, &wlr_xwayland->display_destroy);
@ -352,6 +336,7 @@ static bool wlr_xwayland_init(struct wlr_xwayland *wlr_xwayland,
} }
void wlr_xwayland_destroy(struct wlr_xwayland *wlr_xwayland) { void wlr_xwayland_destroy(struct wlr_xwayland *wlr_xwayland) {
wlr_xwayland_set_seat(wlr_xwayland, NULL);
wlr_xwayland_finish(wlr_xwayland); wlr_xwayland_finish(wlr_xwayland);
free(wlr_xwayland); free(wlr_xwayland);
} }
@ -359,7 +344,10 @@ void wlr_xwayland_destroy(struct wlr_xwayland *wlr_xwayland) {
struct wlr_xwayland *wlr_xwayland_create(struct wl_display *wl_display, struct wlr_xwayland *wlr_xwayland_create(struct wl_display *wl_display,
struct wlr_compositor *compositor) { struct wlr_compositor *compositor) {
struct wlr_xwayland *wlr_xwayland = calloc(1, sizeof(struct wlr_xwayland)); struct wlr_xwayland *wlr_xwayland = calloc(1, sizeof(struct wlr_xwayland));
if (wlr_xwayland_init(wlr_xwayland, wl_display, compositor)) {
wl_signal_init(&wlr_xwayland->events.new_surface);
wl_signal_init(&wlr_xwayland->events.ready);
if (wlr_xwayland_start(wlr_xwayland, wl_display, compositor)) {
return wlr_xwayland; return wlr_xwayland;
} }
free(wlr_xwayland); free(wlr_xwayland);