[Qemu-devel] [PATCH 02/18] console: add dpy_gl_ctx_is_mt_safe

[Marc-André Lureau]

Not all display backends support various opengl contexts in
multi-threads. Add a field to declare it. For now, only spice/egl has
been tested successfully.

Signed-off-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
 ui/console.c         | 6 ++++++
 ui/spice-display.c   | 1 +
 include/ui/console.h | 3 ++-
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/ui/console.c b/ui/console.c
index 2407b48..52b204c 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -1682,6 +1682,12 @@ bool dpy_cursor_define_supported(QemuConsole *con)
     return false;
 }
 
+bool dpy_gl_ctx_is_mt_safe(QemuConsole *con)
+{
+    assert(con->gl);
+    return con->gl->ops->dpy_gl_ctx_is_mt_safe;
+}
+
 QEMUGLContext dpy_gl_ctx_create(QemuConsole *con,
                                 struct QEMUGLParams *qparams)
 {
diff --git a/ui/spice-display.c b/ui/spice-display.c
index 99132b6..1c916dd 100644
--- a/ui/spice-display.c
+++ b/ui/spice-display.c
@@ -916,6 +916,7 @@ static const DisplayChangeListenerOps 
display_listener_gl_ops = {
     .dpy_gl_ctx_destroy      = qemu_egl_destroy_context,
     .dpy_gl_ctx_make_current = qemu_egl_make_context_current,
     .dpy_gl_ctx_get_current  = qemu_egl_get_current_context,
+    .dpy_gl_ctx_is_mt_safe   = true,
 
     .dpy_gl_scanout          = qemu_spice_gl_scanout,
     .dpy_gl_update           = qemu_spice_gl_update,
diff --git a/include/ui/console.h b/include/ui/console.h
index 2703a3a..2e7bb0e 100644
--- a/include/ui/console.h
+++ b/include/ui/console.h
@@ -221,7 +221,7 @@ typedef struct DisplayChangeListenerOps {
                            uint32_t x, uint32_t y, uint32_t w, uint32_t h);
     void (*dpy_gl_update)(DisplayChangeListener *dcl,
                           uint32_t x, uint32_t y, uint32_t w, uint32_t h);
-
+    bool dpy_gl_ctx_is_mt_safe; /* the ctx* functions are mt-safe */
 } DisplayChangeListenerOps;
 
 struct DisplayChangeListener {
@@ -296,6 +296,7 @@ QEMUGLContext dpy_gl_ctx_create(QemuConsole *con,
 void dpy_gl_ctx_destroy(QemuConsole *con, QEMUGLContext ctx);
 int dpy_gl_ctx_make_current(QemuConsole *con, QEMUGLContext ctx);
 QEMUGLContext dpy_gl_ctx_get_current(QemuConsole *con);
+bool dpy_gl_ctx_is_mt_safe(QemuConsole *con);
 
 bool console_has_gl(QemuConsole *con);
 
-- 
2.9.0