It's broken by design. There can be multiple DisplayChangeListener
instances, so they simply can't store state in the (single) DisplayState
struct. Try 'qemu -display gtk -vnc :0', watch it crash & burn.
With DisplayChangeListenerOps having a more sane interface now we can
simply use the DisplayChangeListener pointer to get access to our
private data instead.
Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
---
include/ui/console.h | 1 -
ui/gtk.c | 5 ++---
ui/vnc.c | 38 +++++++++++++++++---------------------
ui/vnc.h | 1 +
4 files changed, 20 insertions(+), 25 deletions(-)
diff --git a/include/ui/console.h b/include/ui/console.h
index 695eabb..0fe9e50 100644
--- a/include/ui/console.h
+++ b/include/ui/console.h
@@ -193,7 +193,6 @@ struct DisplayChangeListener {
struct DisplayState {
struct DisplaySurface *surface;
- void *opaque;
struct QEMUTimer *gui_timer;
bool have_gfx;
bool have_text;
diff --git a/ui/gtk.c b/ui/gtk.c
index e89d4b1..fe58494 100644
--- a/ui/gtk.c
+++ b/ui/gtk.c
@@ -230,7 +230,7 @@ static void gd_update_caption(GtkDisplayState *s)
static void gd_update(DisplayChangeListener *dcl,
DisplayState *ds, int x, int y, int w, int h)
{
- GtkDisplayState *s = ds->opaque;
+ GtkDisplayState *s = container_of(dcl, GtkDisplayState, dcl);
int x1, x2, y1, y2;
int mx, my;
int fbw, fbh;
@@ -269,7 +269,7 @@ static void gd_refresh(DisplayChangeListener *dcl,
static void gd_resize(DisplayChangeListener *dcl,
DisplayState *ds)
{
- GtkDisplayState *s = ds->opaque;
+ GtkDisplayState *s = container_of(dcl, GtkDisplayState, dcl);
cairo_format_t kind;
int stride;
@@ -1297,7 +1297,6 @@ void gtk_display_init(DisplayState *ds)
gtk_init(NULL, NULL);
- ds->opaque = s;
s->ds = ds;
s->dcl.ops = &dcl_ops;
diff --git a/ui/vnc.c b/ui/vnc.c
index bdc3cd8..a6111d6 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -44,7 +44,6 @@ static const struct timeval VNC_REFRESH_LOSSY = { 2, 0 };
#include "d3des.h"
static VncDisplay *vnc_display; /* needed for info vnc */
-static DisplayChangeListener *dcl;
static int vnc_cursor_define(VncState *vs);
static void vnc_release_modifiers(VncState *vs);
@@ -435,7 +434,7 @@ static void vnc_dpy_update(DisplayChangeListener *dcl,
int x, int y, int w, int h)
{
int i;
- VncDisplay *vd = ds->opaque;
+ VncDisplay *vd = container_of(dcl, VncDisplay, dcl);
struct VncSurface *s = &vd->guest;
int width = ds_get_width(ds);
int height = ds_get_height(ds);
@@ -578,7 +577,7 @@ void *vnc_server_fb_ptr(VncDisplay *vd, int x, int y)
static void vnc_dpy_resize(DisplayChangeListener *dcl,
DisplayState *ds)
{
- VncDisplay *vd = ds->opaque;
+ VncDisplay *vd = container_of(dcl, VncDisplay, dcl);
VncState *vs;
vnc_abort_display_jobs(vd);
@@ -743,7 +742,7 @@ static void vnc_dpy_copy(DisplayChangeListener *dcl,
int src_x, int src_y,
int dst_x, int dst_y, int w, int h)
{
- VncDisplay *vd = ds->opaque;
+ VncDisplay *vd = container_of(dcl, VncDisplay, dcl);
VncState *vs, *vn;
uint8_t *src_row;
uint8_t *dst_row;
@@ -1069,7 +1068,7 @@ void vnc_disconnect_finish(VncState *vs)
}
if (QTAILQ_EMPTY(&vs->vd->clients)) {
- dcl->idle = 1;
+ vs->vd->dcl.idle = 1;
}
vnc_remove_timer(vs->vd);
@@ -1985,7 +1984,7 @@ static void pixel_format_message (VncState *vs) {
static void vnc_dpy_setdata(DisplayChangeListener *dcl,
DisplayState *ds)
{
- VncDisplay *vd = ds->opaque;
+ VncDisplay *vd = container_of(dcl, VncDisplay, dcl);
qemu_pixman_image_unref(vd->guest.fb);
vd->guest.fb = pixman_image_ref(ds->surface->image);
@@ -2697,7 +2696,7 @@ static void vnc_init_timer(VncDisplay *vd)
vd->timer_interval = VNC_REFRESH_INTERVAL_BASE;
if (vd->timer == NULL && !QTAILQ_EMPTY(&vd->clients)) {
vd->timer = qemu_new_timer_ms(rt_clock, vnc_refresh, vd);
- vnc_dpy_resize(dcl, vd->ds);
+ vnc_dpy_resize(&vd->dcl, vd->ds);
vnc_refresh(vd);
}
}
@@ -2736,7 +2735,7 @@ static void vnc_connect(VncDisplay *vd, int csock, int
skipauth, bool websocket)
}
VNC_DEBUG("New client on socket %d\n", csock);
- dcl->idle = 0;
+ vd->dcl.idle = 0;
socket_set_nonblock(vs->csock);
#ifdef CONFIG_VNC_WS
if (websocket) {
@@ -2847,10 +2846,7 @@ void vnc_display_init(DisplayState *ds)
{
VncDisplay *vs = g_malloc0(sizeof(*vs));
- dcl = g_malloc0(sizeof(DisplayChangeListener));
-
- ds->opaque = vs;
- dcl->idle = 1;
+ vs->dcl.idle = 1;
vnc_display = vs;
vs->lsock = -1;
@@ -2873,14 +2869,14 @@ void vnc_display_init(DisplayState *ds)
qemu_mutex_init(&vs->mutex);
vnc_start_worker_thread();
- dcl->ops = &dcl_ops;
- register_displaychangelistener(ds, dcl);
+ vs->dcl.ops = &dcl_ops;
+ register_displaychangelistener(ds, &vs->dcl);
}
static void vnc_display_close(DisplayState *ds)
{
- VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
+ VncDisplay *vs = vnc_display;
if (!vs)
return;
@@ -2911,7 +2907,7 @@ static void vnc_display_close(DisplayState *ds)
static int vnc_display_disable_login(DisplayState *ds)
{
- VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
+ VncDisplay *vs = vnc_display;
if (!vs) {
return -1;
@@ -2931,7 +2927,7 @@ static int vnc_display_disable_login(DisplayState *ds)
int vnc_display_password(DisplayState *ds, const char *password)
{
- VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
+ VncDisplay *vs = vnc_display;
if (!vs) {
return -EINVAL;
@@ -2957,7 +2953,7 @@ int vnc_display_password(DisplayState *ds, const char
*password)
int vnc_display_pw_expire(DisplayState *ds, time_t expires)
{
- VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
+ VncDisplay *vs = vnc_display;
if (!vs) {
return -EINVAL;
@@ -2969,14 +2965,14 @@ int vnc_display_pw_expire(DisplayState *ds, time_t
expires)
char *vnc_display_local_addr(DisplayState *ds)
{
- VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
+ VncDisplay *vs = vnc_display;
return vnc_socket_local_addr("%s:%s", vs->lsock);
}
void vnc_display_open(DisplayState *ds, const char *display, Error **errp)
{
- VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
+ VncDisplay *vs = vnc_display;
const char *options;
int password = 0;
int reverse = 0;
@@ -3282,7 +3278,7 @@ fail:
void vnc_display_add_client(DisplayState *ds, int csock, int skipauth)
{
- VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
+ VncDisplay *vs = vnc_display;
vnc_connect(vs, csock, skipauth, 0);
}
diff --git a/ui/vnc.h b/ui/vnc.h
index 45d7686..a96485b 100644
--- a/ui/vnc.h
+++ b/ui/vnc.h
@@ -151,6 +151,7 @@ struct VncDisplay
char *ws_display;
#endif
DisplayState *ds;
+ DisplayChangeListener dcl;
kbd_layout_t *kbd_layout;
int lock_key_sync;
QemuMutex mutex;
--
1.7.9.7
