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>From fd04276a00b172e6fbba3e3c72b1d13a0f179414 Mon Sep 17 00:00:00 2001
From: Alon Levy <alevy@redhat.com>
Date: Wed, 16 Mar 2011 15:21:03 +0100
Subject: [PATCH 1/4] qxl/spice-display: move pipe to ssd

This moves the int pipe[2] and pthread_t main data from the
PCIQXLDevice struct to the SimpleSpiceDisplay. This will let us
reuse it in the next patch for both -spice with no -qxl usage and
for vga mode from qxl.

Also move the pipe creation function (which is effectively completely rewritten
by this patch anyways) from hw/qxl.c to ui/spice-display.c, since
spice-display will depend on it after the next patch and qemu can be build
with ui/spice-display.c in combination with no hw/qxl.c.
---
 hw/qxl.c           |   22 +++++-----------------
 hw/qxl.h           |    4 ----
 ui/spice-display.c |   21 +++++++++++++++++++++
 ui/spice-display.h |    8 ++++++++
 4 files changed, 34 insertions(+), 21 deletions(-)

diff --git a/hw/qxl.c b/hw/qxl.c
index fe4212b..201698f 100644
--- a/hw/qxl.c
+++ b/hw/qxl.c
@@ -1062,7 +1062,7 @@ static void pipe_read(void *opaque)
     int len;
 
     do {
-        len = read(d->pipe[0], &dummy, sizeof(dummy));
+        len = read(d->ssd.pipe[0], &dummy, sizeof(dummy));
     } while (len == sizeof(dummy));
     qxl_set_irq(d);
 }
@@ -1078,10 +1078,11 @@ static void qxl_send_events(PCIQXLDevice *d, uint32_t events)
     if ((old_pending & le_events) == le_events) {
         return;
     }
-    if (pthread_self() == d->main) {
+    if (pthread_self() == d->ssd.main) {
+        /* running in io_thread thread */
         qxl_set_irq(d);
     } else {
-        if (write(d->pipe[1], d, 1) != 1) {
+        if (write(d->ssd.pipe[1], d, 1) != 1) {
             dprint(d, 1, "%s: write to pipe failed\n", __FUNCTION__);
         }
     }
@@ -1089,20 +1090,7 @@ static void qxl_send_events(PCIQXLDevice *d, uint32_t events)
 
 static void init_pipe_signaling(PCIQXLDevice *d)
 {
-   if (pipe(d->pipe) < 0) {
-       dprint(d, 1, "%s: pipe creation failed\n", __FUNCTION__);
-       return;
-   }
-#ifdef CONFIG_IOTHREAD
-   fcntl(d->pipe[0], F_SETFL, O_NONBLOCK);
-#else
-   fcntl(d->pipe[0], F_SETFL, O_NONBLOCK /* | O_ASYNC */);
-#endif
-   fcntl(d->pipe[1], F_SETFL, O_NONBLOCK);
-   fcntl(d->pipe[0], F_SETOWN, getpid());
-
-   d->main = pthread_self();
-   qemu_set_fd_handler(d->pipe[0], pipe_read, NULL, d);
+   qxl_create_server_to_iothread_pipe(&d->ssd, pipe_read);
 }
 
 /* graphics console */
diff --git a/hw/qxl.h b/hw/qxl.h
index f6c450d..701245f 100644
--- a/hw/qxl.h
+++ b/hw/qxl.h
@@ -55,10 +55,6 @@ typedef struct PCIQXLDevice {
     } guest_surfaces;
     QXLPHYSICAL        guest_cursor;
 
-    /* thread signaling */
-    pthread_t          main;
-    int                pipe[2];
-
     /* ram pci bar */
     QXLRam             *ram;
     VGACommonState     vga;
diff --git a/ui/spice-display.c b/ui/spice-display.c
index 020b423..ec6e0cb 100644
--- a/ui/spice-display.c
+++ b/ui/spice-display.c
@@ -394,6 +394,27 @@ static DisplayChangeListener display_listener = {
     .dpy_refresh = display_refresh,
 };
 
+void qxl_create_server_to_iothread_pipe(SimpleSpiceDisplay *ssd,
+    IOHandler *pipe_read)
+{
+    if (pipe(ssd->pipe) < 0) {
+        fprintf(stderr, "%s: pipe creation failed\n", __FUNCTION__);
+        return;
+    }
+
+#ifdef CONFIG_IOTHREAD
+    fcntl(ssd->pipe[0], F_SETFL, O_NONBLOCK);
+#else
+    fcntl(ssd->pipe[0], F_SETFL, O_NONBLOCK /* | O_ASYNC */);
+#endif
+    fcntl(ssd->pipe[1], F_SETFL, O_NONBLOCK);
+
+    fcntl(ssd->pipe[0], F_SETOWN, getpid());
+
+    qemu_set_fd_handler(ssd->pipe[0], pipe_read, NULL, ssd);
+    ssd->main = pthread_self();
+}
+
 void qemu_spice_display_init(DisplayState *ds)
 {
     assert(sdpy.ds == NULL);
diff --git a/ui/spice-display.h b/ui/spice-display.h
index aef0464..3e6cf7c 100644
--- a/ui/spice-display.h
+++ b/ui/spice-display.h
@@ -43,6 +43,11 @@ typedef struct SimpleSpiceDisplay {
     QXLRect dirty;
     int notify;
     int running;
+
+    /* thread signaling - used both in qxl (in vga mode
+     * and in native mode) and without qxl */
+    pthread_t          main;
+    int                pipe[2];     /* to iothread */
 } SimpleSpiceDisplay;
 
 typedef struct SimpleSpiceUpdate {
@@ -66,3 +71,6 @@ void qemu_spice_display_update(SimpleSpiceDisplay *ssd,
                                int x, int y, int w, int h);
 void qemu_spice_display_resize(SimpleSpiceDisplay *ssd);
 void qemu_spice_display_refresh(SimpleSpiceDisplay *ssd);
+/* used by both qxl and spice-display */
+void qxl_create_server_to_iothread_pipe(SimpleSpiceDisplay *ssd,
+    IOHandler *pipe_read);
-- 
1.7.3.2