feature/android 78faad63306 1/4: Update Android port

[Po Lu]

branch: feature/android
commit 78faad633068d69dce25f246efb5374c21dae6bd
Author: Po Lu <luangruo@yahoo.com>
Commit: Po Lu <luangruo@yahoo.com>

    Update Android port
    
    * src/android.c (android_resolve_handle)
    (android_resolve_handle2): Don't perform checking done by
    CheckJNI by default.
    (android_copy_area): Check for errors here because CopyArea can
    perform a lot of consing.
    (android_define_cursor): Remove redundant code.
---
 src/android.c | 21 ++++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

diff --git a/src/android.c b/src/android.c
index 79598ab86df..e4f9dd0ffbe 100644
--- a/src/android.c
+++ b/src/android.c
@@ -2986,6 +2986,12 @@ android_resolve_handle (android_handle handle,
     /* ANDROID_NONE.  */
     return NULL;
 
+  /* CheckJNI will normally ensure that the handle exists and is
+     the right type, but with a less informative error message.
+     Don't waste cycles doing our own checking here.  */
+
+#ifdef ENABLE_CHECKING
+
   if (!android_handles[handle].handle)
     {
       __android_log_print (ANDROID_LOG_ERROR, __func__,
@@ -3000,6 +3006,8 @@ android_resolve_handle (android_handle handle,
       emacs_abort ();
     }
 
+#endif /* ENABLE_CHECKING */
+
   return android_handles[handle].handle;
 }
 
@@ -3011,6 +3019,12 @@ android_resolve_handle2 (android_handle handle,
   if (!handle)
     return NULL;
 
+  /* CheckJNI will normally ensure that the handle exists and is
+     the right type, but with a less informative error message.
+     Don't waste cycles doing our own checking here.  */
+
+#ifdef ENABLE_CHECKING
+
   if (!android_handles[handle].handle)
     {
       __android_log_print (ANDROID_LOG_ERROR, __func__,
@@ -3026,6 +3040,8 @@ android_resolve_handle2 (android_handle handle,
       emacs_abort ();
     }
 
+#endif /* ENABLE_CHECKING */
+
   return android_handles[handle].handle;
 }
 
@@ -3861,6 +3877,7 @@ android_copy_area (android_drawable src, android_drawable 
dest,
                                                 (jint) src_x, (jint) src_y,
                                                 (jint) width, (jint) height,
                                                 (jint) dest_x, (jint) dest_y);
+  android_exception_check ();
 }
 
 void
@@ -6345,9 +6362,7 @@ android_define_cursor (android_window window, 
android_cursor cursor)
   jmethodID method;
 
   window1 = android_resolve_handle (window, ANDROID_HANDLE_WINDOW);
-  cursor1 = (cursor
-            ? android_resolve_handle (cursor, ANDROID_HANDLE_CURSOR)
-            : NULL);
+  cursor1 = android_resolve_handle (cursor, ANDROID_HANDLE_CURSOR);
   method = window_class.define_cursor;
 
   (*android_java_env)->CallNonvirtualVoidMethod (android_java_env,