Use tpl_gcond_timed_wait to prevent deadlock.

 - There may be cases where the ddk terminates
  without sending a fence release signal.
 - In such a case, waiting for signaled with
  tpl_gcond_wait() may result in deadlock.
 - The newly added tpl_gcond_timed_wait() is used to
  force release if a signal does not come within 16ms.

Change-Id: I11801bb9f8ff4450a00b12656694940e28121a69
Signed-off-by: Joonbum Ko <joonbum.ko@samsung.com>

diff --git a/src/tpl_wl_egl.c b/src/tpl_wl_egl.c
index c9b2592..36310eb 100644 (file)
--- a/src/tpl_wl_egl.c
+++ b/src/tpl_wl_egl.c
@@ -1450,8 +1450,15 @@ _thread_wl_egl_surface_fini(tpl_wl_egl_surface_t *wl_egl_surface)
 
                        need_to_cancel = wl_egl_buffer->status == DEQUEUED;
 
-                       if (wl_egl_buffer->status == WAITING_SIGNALED)
-                               tpl_gcond_wait(&wl_egl_buffer->cond, &wl_egl_buffer->mutex);
+                       if (wl_egl_buffer->status == WAITING_SIGNALED) {
+                               tpl_result_t wait_result = TPL_ERROR_NONE;
+                               wait_result = tpl_cond_timed_wait(&wl_egl_buffer->cond,
+                                                                                                 &wl_egl_buffer->mutex,
+                                                                                                 16);
+                               if (wait_result == TPL_ERROR_TIME_OUT)
+                                       TPL_WARN("timeout occured waiting signaled. wl_egl_buffer(%p)",
+                                                        wl_egl_buffer);
+                       }
 
                        if (need_to_release) {
                                tsq_err = tbm_surface_queue_release(wl_egl_surface->tbm_queue,