other async render issue - sync ALL rendering canvases, not just one

src/lib/evas/canvas/evas_render.c

@@ -2235,6 +2235,7 @@ _canvas_render_dump(Eo *eo_e EINA_UNUSED, void *_pd, va_list *list EINA_UNUSED)
    Evas_Public_Data *e = _pd;
    Evas_Layer *lay;
 
+   evas_thread_queue_block();
    evas_render_rendering_wait(e);
    evas_cache_async_freeze();
 
@@ -2263,6 +2264,7 @@ _canvas_render_dump(Eo *eo_e EINA_UNUSED, void *_pd, va_list *list EINA_UNUSED)
    GC_ALL(evas_object_image_load_opts_cow);
    GC_ALL(evas_object_image_state_cow);
    evas_cache_async_thaw();
+   evas_thread_queue_unblock();
 }
 
 void

src/lib/evas/common/evas_thread_render.c

@@ -4,6 +4,7 @@
 
 static Eina_Thread evas_thread_worker;
 static Eina_Condition evas_thread_queue_condition;
+static Eina_Lock evas_thread_block_lock;
 static Eina_Lock evas_thread_queue_lock;
 static Eina_Bool evas_thread_queue_ready = EINA_FALSE;
 static Eina_Inarray evas_thread_queue;
@@ -55,7 +56,19 @@ evas_thread_queue_flush(Evas_Thread_Command_Cb cb, void *data)
     evas_thread_queue_append(cb, data, EINA_TRUE);
 }
 
-static void*
+EAPI void
+evas_thread_queue_block(void)
+{
+   eina_lock_take(&evas_thread_block_lock);
+}
+
+EAPI void
+evas_thread_queue_unblock(void)
+{
+   eina_lock_release(&evas_thread_block_lock);
+}
+
+static void *
 evas_thread_worker_func(void *data EINA_UNUSED, Eina_Thread thread EINA_UNUSED)
 {
     while (1)
@@ -83,6 +96,8 @@ evas_thread_worker_func(void *data EINA_UNUSED, Eina_Thread thread EINA_UNUSED)
               continue;
            }
 
+         eina_lock_take(&evas_thread_block_lock);
+         
          cmd = evas_thread_queue.members;
          evas_thread_queue.members = evas_thread_queue_cache;
          evas_thread_queue_cache = cmd;
@@ -109,6 +124,7 @@ evas_thread_worker_func(void *data EINA_UNUSED, Eina_Thread thread EINA_UNUSED)
               cmd++;
               len--;
            }
+         eina_lock_release(&evas_thread_block_lock);
       }
 
 out:
@@ -128,6 +144,8 @@ evas_thread_init(void)
 
     if (!eina_lock_new(&evas_thread_queue_lock))
       CRIT("Could not create draw thread lock");
+    if (!eina_lock_new(&evas_thread_block_lock))
+      CRIT("Could not create draw thread block lock");
     if (!eina_condition_new(&evas_thread_queue_condition, &evas_thread_queue_lock))
       CRIT("Could not create draw thread condition");
     if (!eina_thread_create(&evas_thread_worker, EINA_THREAD_NORMAL, 0,
@@ -154,6 +172,7 @@ evas_thread_shutdown(void)
       evas_async_events_process();
 
     eina_thread_join(evas_thread_worker);
+    eina_lock_free(&evas_thread_block_lock);
     eina_lock_free(&evas_thread_queue_lock);
     eina_condition_free(&evas_thread_queue_condition);
 

src/lib/evas/include/evas_common_private.h

@@ -1253,7 +1253,9 @@ void              evas_thread_init(void);
 void              evas_thread_shutdown(void);
 EAPI void         evas_thread_cmd_enqueue(Evas_Thread_Command_Cb cb, void *data);
 EAPI void         evas_thread_queue_flush(Evas_Thread_Command_Cb cb, void *data);
-
+EAPI void         evas_thread_queue_block(void);
+EAPI void         evas_thread_queue_unblock(void);
+       
 typedef enum _Evas_Render_Mode
 {
    EVAS_RENDER_MODE_UNDEF,