1 files changed, 10 insertions, 0 deletions
diff --git a/include/my_sys.h b/include/my_sys.h
index cb9a24bbd7f..166133251bc 100644
--- a/include/my_sys.h
+++ b/include/my_sys.h
@@ -172,6 +172,16 @@ extern char *my_strndup(const char *from, size_t length,
 #define TRASH(A,B) /* nothing */
 #endif
 
+#if defined(ENABLED_DEBUG_SYNC)
+extern void (*debug_sync_C_callback_ptr)(const char *, size_t);
+#define DEBUG_SYNC_C(_sync_point_name_) do {                            \
+    if (debug_sync_C_callback_ptr != NULL)                              \
+      (*debug_sync_C_callback_ptr)(STRING_WITH_LEN(_sync_point_name_)); } \
+  while(0)
+#else
+#define DEBUG_SYNC_C(_sync_point_name_)
+#endif /* defined(ENABLED_DEBUG_SYNC) */
+
 #ifdef HAVE_LARGE_PAGES
 extern uint my_get_large_page_size(void);
 extern uchar * my_large_malloc(size_t size, myf my_flags);