[PATCH v3 4/6] winewayland.drv: Add stub for per-thread data.

[Alexandros Frantzis]

From: Alexandros Frantzis

Handle allocation and deallocation of per-thread data (currently without
any actual contents), and initialize them for the desktop window thread.

Signed-off-by: Alexandros Frantzis 
---
 dlls/winewayland.drv/Makefile.in       |  3 +-
 dlls/winewayland.drv/waylanddrv.h      | 26 ++++++++++++++
 dlls/winewayland.drv/waylanddrv_main.c | 50 ++++++++++++++++++++++++++
 dlls/winewayland.drv/window.c          | 50 ++++++++++++++++++++++++++
 4 files changed, 128 insertions(+), 1 deletion(-)
 create mode 100644 dlls/winewayland.drv/window.c

diff --git a/dlls/winewayland.drv/Makefile.in b/dlls/winewayland.drv/Makefile.in
index fc1fe8119ec..b3ad75fb624 100644
--- a/dlls/winewayland.drv/Makefile.in
+++ b/dlls/winewayland.drv/Makefile.in
@@ -1,11 +1,12 @@
 MODULE = winewayland.drv
 UNIXLIB = winewayland.so
 UNIX_CFLAGS = $(WAYLAND_CLIENT_CFLAGS)
-UNIX_LIBS = $(WAYLAND_CLIENT_LIBS)
+UNIX_LIBS = -lwin32u $(WAYLAND_CLIENT_LIBS)

C_SRCS = \
    dllmain.c \
    wayland.c \
    waylanddrv_main.c \
+	window.c \

RC_SRCS = version.rc
diff --git a/dlls/winewayland.drv/waylanddrv.h b/dlls/winewayland.drv/waylanddrv.h
index 3fd8728d81b..2b159a0a345 100644
--- a/dlls/winewayland.drv/waylanddrv.h
+++ b/dlls/winewayland.drv/waylanddrv.h
@@ -25,8 +25,13 @@
 # error You must include config.h to use this header
 #endif

+#include <stdarg.h>
 #include <wayland-client.h>

+#include "windef.h"
+#include "winbase.h"
+#include "ntuser.h"
+
 #include "unixlib.h"

/**********************************************************************
@@ -35,10 +40,31 @@

extern struct wl_display *process_wl_display DECLSPEC_HIDDEN;

+/**********************************************************************
+ *          Wayland thread data
+ */
+
+struct wayland_thread_data
+{
+};
+
+extern struct wayland_thread_data *wayland_init_thread_data(void) DECLSPEC_HIDDEN;
+
+static inline struct wayland_thread_data *wayland_thread_data(void)
+{
+    return (struct wayland_thread_data *)(UINT_PTR)NtUserGetThreadInfo()->driver_data;
+}
+
 /**********************************************************************
  *          Wayland initialization
  */

BOOL wayland_process_init(void) DECLSPEC_HIDDEN;

+/**********************************************************************
+ *          USER driver functions
+ */
+
+BOOL WAYLAND_CreateWindow(HWND hwnd) DECLSPEC_HIDDEN;
+
 #endif /* __WINE_WAYLANDDRV_H */
diff --git a/dlls/winewayland.drv/waylanddrv_main.c b/dlls/winewayland.drv/waylanddrv_main.c
index d4018683239..294e9101d06 100644
--- a/dlls/winewayland.drv/waylanddrv_main.c
+++ b/dlls/winewayland.drv/waylanddrv_main.c
@@ -29,10 +29,60 @@

#include "waylanddrv.h"

+#include "wine/debug.h"
+#include "wine/gdi_driver.h"
+
+#include <stdlib.h>
+
+WINE_DEFAULT_DEBUG_CHANNEL(waylanddrv);
+
+/***********************************************************************
+ *           Initialize per thread data
+ */
+struct wayland_thread_data *wayland_init_thread_data(void)
+{
+    struct wayland_thread_data *data = wayland_thread_data();
+
+    if (data) return data;
+
+    if (!(data = calloc(1, sizeof(*data))))
+    {
+        ERR("could not create data\n");
+        NtTerminateProcess(0, 1);
+    }
+
+    NtUserGetThreadInfo()->driver_data = (UINT_PTR)data;
+
+    return data;
+}
+
+/***********************************************************************
+ *           ThreadDetach (WAYLAND.@)
+ */
+static void WAYLAND_ThreadDetach(void)
+{
+    struct wayland_thread_data *data = wayland_thread_data();
+
+    if (data)
+    {
+        free(data);
+        /* clear data in case we get re-entered from user32 before the thread is truly dead */
+        NtUserGetThreadInfo()->driver_data = 0;
+    }
+}
+
+static const struct user_driver_funcs waylanddrv_funcs =
+{
+    .pCreateWindow = WAYLAND_CreateWindow,
+    .pThreadDetach = WAYLAND_ThreadDetach,
+};
+
 static NTSTATUS waylanddrv_unix_init(void *arg)
 {
     if (!wayland_process_init()) return STATUS_UNSUCCESSFUL;

+    __wine_set_user_driver(&waylanddrv_funcs, WINE_GDI_DRIVER_VERSION);
+
     return 0;
 }

diff --git a/dlls/winewayland.drv/window.c b/dlls/winewayland.drv/window.c
new file mode 100644
index 00000000000..54c40a32bbb
--- /dev/null
+++ b/dlls/winewayland.drv/window.c
@@ -0,0 +1,50 @@
+/*
+ * Window related functions
+ *
+ * Copyright 2020 Alexandros Frantzis for Collabora Ltd
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#if 0
+#pragma makedep unix
+#endif
+
+#include "config.h"
+
+#include "waylanddrv.h"
+
+#include "wine/debug.h"
+
+#include "ntuser.h"
+
+WINE_DEFAULT_DEBUG_CHANNEL(waylanddrv);
+
+/**********************************************************************
+ *           WAYLAND_CreateWindow
+ */
+BOOL WAYLAND_CreateWindow(HWND hwnd)
+{
+    TRACE("%p\n", hwnd);
+
+    if (hwnd == NtUserGetDesktopWindow())
+    {
+        /* Initialize wayland so that the desktop window thread has access
+         * to all the wayland related information (e.g., displays). */
+        wayland_init_thread_data();
+    }
+
+    return TRUE;
+}