spice: don't call displaystate callbacks from spice server context.

This patch moves the displaystate callback calls for setting the cursor
and the mouse pointer from spice server to qemu (iothread) context.
This allows us to simplify locking.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

diff --git a/hw/qxl-render.c b/hw/qxl-render.c
index 58965e0179dcadfdb1b318e36bdefd6bdb99d406..1316066599b93cfe559957e065390c6d5b3d9f67 100644 (file)
--- a/hw/qxl-render.c
+++ b/hw/qxl-render.c
@@ -185,7 +185,6 @@ void qxl_render_cursor(PCIQXLDevice *qxl, QXLCommandExt *ext)
     QXLCursorCmd *cmd = qxl_phys2virt(qxl, ext->cmd.data, ext->group_id);
     QXLCursor *cursor;
     QEMUCursor *c;
-    int x = -1, y = -1;
 
     if (!qxl->ssd.ds->mouse_set || !qxl->ssd.ds->cursor_define) {
         return;
@@ -198,8 +197,6 @@ void qxl_render_cursor(PCIQXLDevice *qxl, QXLCommandExt *ext)
     }
     switch (cmd->type) {
     case QXL_CURSOR_SET:
-        x = cmd->u.set.position.x;
-        y = cmd->u.set.position.y;
         cursor = qxl_phys2virt(qxl, cmd->u.set.shape, ext->group_id);
         if (cursor->chunk.data_size != cursor->data_size) {
             fprintf(stderr, "%s: multiple chunks\n", __FUNCTION__);
@@ -209,18 +206,20 @@ void qxl_render_cursor(PCIQXLDevice *qxl, QXLCommandExt *ext)
         if (c == NULL) {
             c = cursor_builtin_left_ptr();
         }
-        qemu_mutex_lock_iothread();
-        qxl->ssd.ds->cursor_define(c);
-        qxl->ssd.ds->mouse_set(x, y, 1);
-        qemu_mutex_unlock_iothread();
-        cursor_put(c);
+        qemu_mutex_lock(&qxl->ssd.lock);
+        if (qxl->ssd.cursor) {
+            cursor_put(qxl->ssd.cursor);
+        }
+        qxl->ssd.cursor = c;
+        qxl->ssd.mouse_x = cmd->u.set.position.x;
+        qxl->ssd.mouse_y = cmd->u.set.position.y;
+        qemu_mutex_unlock(&qxl->ssd.lock);
         break;
     case QXL_CURSOR_MOVE:
-        x = cmd->u.position.x;
-        y = cmd->u.position.y;
-        qemu_mutex_lock_iothread();
-        qxl->ssd.ds->mouse_set(x, y, 1);
-        qemu_mutex_unlock_iothread();
+        qemu_mutex_lock(&qxl->ssd.lock);
+        qxl->ssd.mouse_x = cmd->u.position.x;
+        qxl->ssd.mouse_y = cmd->u.position.y;
+        qemu_mutex_unlock(&qxl->ssd.lock);
         break;
     }
 }

diff --git a/hw/qxl.c b/hw/qxl.c
index bd250db8850c42932f44423c18e4cde2840c1710..4dfddf0dceaa4f4224917dcde112ece260992a21 100644 (file)
--- a/hw/qxl.c
+++ b/hw/qxl.c
@@ -1309,6 +1309,8 @@ static int qxl_init_primary(PCIDevice *dev)
                                    qxl_hw_screen_dump, qxl_hw_text_update, qxl);
     qxl->ssd.ds = vga->ds;
     qemu_mutex_init(&qxl->ssd.lock);
+    qxl->ssd.mouse_x = -1;
+    qxl->ssd.mouse_y = -1;
     qxl->ssd.bufsize = (16 * 1024 * 1024);
     qxl->ssd.buf = qemu_malloc(qxl->ssd.bufsize);
 

diff --git a/ui/spice-display.c b/ui/spice-display.c
index d56dcfc7d3b9f4c2c21b362110e8bcffc11ec378..8579bfd5b2fa7065d5b4a4086586cfea41b19a69 100644 (file)
--- a/ui/spice-display.c
+++ b/ui/spice-display.c
@@ -254,6 +254,16 @@ void qemu_spice_display_refresh(SimpleSpiceDisplay *ssd)
         ssd->update = qemu_spice_create_update(ssd);
         ssd->notify++;
     }
+    if (ssd->cursor) {
+        ssd->ds->cursor_define(ssd->cursor);
+        cursor_put(ssd->cursor);
+        ssd->cursor = NULL;
+    }
+    if (ssd->mouse_x != -1 && ssd->mouse_y != -1) {
+        ssd->ds->mouse_set(ssd->mouse_x, ssd->mouse_y, 1);
+        ssd->mouse_x = -1;
+        ssd->mouse_y = -1;
+    }
     qemu_mutex_unlock(&ssd->lock);
 
     if (ssd->notify) {
@@ -409,6 +419,8 @@ void qemu_spice_display_init(DisplayState *ds)
     assert(sdpy.ds == NULL);
     sdpy.ds = ds;
     qemu_mutex_init(&sdpy.lock);
+    sdpy.mouse_x = -1;
+    sdpy.mouse_y = -1;
     sdpy.bufsize = (16 * 1024 * 1024);
     sdpy.buf = qemu_malloc(sdpy.bufsize);
     register_displaychangelistener(ds, &display_listener);

diff --git a/ui/spice-display.h b/ui/spice-display.h
index e0cc46ef4ccb38d3f84df20d4e598172ecabfc71..2f95f68aad77ecc22856cb8558d848556b61c13f 100644 (file)
--- a/ui/spice-display.h
+++ b/ui/spice-display.h
@@ -20,6 +20,7 @@
 #include <spice/qxl_dev.h>
 
 #include "qemu-thread.h"
+#include "console.h"
 #include "pflib.h"
 
 #define NUM_MEMSLOTS 8
@@ -55,6 +56,8 @@ struct SimpleSpiceDisplay {
      */
     QemuMutex lock;
     SimpleSpiceUpdate *update;
+    QEMUCursor *cursor;
+    int mouse_x, mouse_y;
 };
 
 struct SimpleSpiceUpdate {