[PATCH v6 25/25] hmp: call the asynchronous QMP screendump to fix outdated/glitches

["Marc-André Lureau" <marcandre.lureau@redhat.com>]

In order to fix the bad screendumps (same as rhbz#1230527), call into
the asynchonous version of the QMP command.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 hmp-commands.hx      |  3 ++-
 include/ui/console.h |  5 ++---
 monitor/hmp-cmds.c   |  6 ++----
 ui/console.c         | 32 --------------------------------
 4 files changed, 6 insertions(+), 40 deletions(-)

diff --git a/hmp-commands.hx b/hmp-commands.hx
index cfcc044ce4..82b9236deb 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -278,7 +278,8 @@ ETEXI
         .params     = "filename [device [head]]",
         .help       = "save screen from head 'head' of display device 'device' "
                       "into PPM image 'filename'",
-        .cmd        = hmp_screendump,
+        .async_cmd  = hmp_screendump_async,
+        .async      = true,
     },
 
 STEXI
diff --git a/include/ui/console.h b/include/ui/console.h
index a1935557cc..d0a2a2066f 100644
--- a/include/ui/console.h
+++ b/include/ui/console.h
@@ -6,6 +6,7 @@
 #include "qemu/notify.h"
 #include "qemu/error-report.h"
 #include "qapi/qapi-types-ui.h"
+#include "qapi/qmp/dispatch.h"
 
 #ifdef CONFIG_OPENGL
 # include <epoxy/gl.h>
@@ -74,9 +75,7 @@ typedef struct MouseTransformInfo {
 } MouseTransformInfo;
 
 void hmp_mouse_set(Monitor *mon, const QDict *qdict);
-void hmp_screendump_sync(const char *filename,
-                         bool has_device, const char *device,
-                         bool has_head, int64_t head, Error **errp);
+void hmp_screendump_async(Monitor *mon, const QDict *qdict, QmpReturn *qret);
 
 /* keysym is a unicode code except for special keys (see QEMU_KEY_xxx
    constants) */
diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index c52e78fedf..93b061cf4f 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -2301,15 +2301,13 @@ err_out:
     goto out;
 }
 
-void hmp_screendump(Monitor *mon, const QDict *qdict)
+void hmp_screendump_async(Monitor *mon, const QDict *qdict, QmpReturn *qret)
 {
     const char *filename = qdict_get_str(qdict, "filename");
     const char *id = qdict_get_try_str(qdict, "device");
     int64_t head = qdict_get_try_int(qdict, "head", 0);
-    Error *err = NULL;
 
-    hmp_screendump_sync(filename, id != NULL, id, id != NULL, head, &err);
-    hmp_handle_error(mon, &err);
+    qmp_screendump(filename, id != NULL, id, id != NULL, head, qret);
 }
 
 void hmp_nbd_server_start(Monitor *mon, const QDict *qdict)
diff --git a/ui/console.c b/ui/console.c
index fd87605b7c..a6f8e34e61 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -417,38 +417,6 @@ static QemuConsole *get_console(bool has_device, const char *device,
     return con;
 }
 
-void hmp_screendump_sync(const char *filename,
-                         bool has_device, const char *device,
-                         bool has_head, int64_t head, Error **errp)
-{
-    DisplaySurface *surface;
-    QemuConsole *con = get_console(has_device, device, has_head, head, errp);
-    int fd;
-
-    if (!con) {
-        return;
-    }
-    /* This may not complete the drawing with Spice, you may have
-     * glitches or outdated dumps, use qmp instead! */
-    graphic_hw_update(con);
-    surface = qemu_console_surface(con);
-    if (!surface) {
-        error_setg(errp, "no surface");
-        return;
-    }
-
-    fd = qemu_open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0666);
-    if (fd == -1) {
-        error_setg(errp, "failed to open file '%s': %s", filename,
-                   strerror(errno));
-        return;
-    }
-
-    if (!ppm_save(fd, surface, errp)) {
-        qemu_unlink(filename);
-    }
-}
-
 void qmp_screendump(const char *filename,
                     bool has_device, const char *device,
                     bool has_head, int64_t head,
-- 
2.24.0