diff --git a/runtime/utils.cc b/runtime/utils.cc
index eddc3a4..ff6b4c0 100644
--- a/runtime/utils.cc
+++ b/runtime/utils.cc
@@ -1860,4 +1860,10 @@
   *parsed_value = value;
 }
 
+int64_t GetFileSizeBytes(const std::string& filename) {
+  struct stat stat_buf;
+  int rc = stat(filename.c_str(), &stat_buf);
+  return rc == 0 ? stat_buf.st_size : -1;
+}
+
 }  // namespace art