From e66ad3b3cb63f8762d4f6d97677c2df110d7ec6a Mon Sep 17 00:00:00 2001
From: ncteisen <ncteisen@gmail.com>
Date: Mon, 6 Nov 2017 20:22:48 -0800
Subject: Add GRPC_ABSTRACT_BASE_CLASS

---
 src/core/lib/support/abstract.h | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 src/core/lib/support/abstract.h

(limited to 'src/core/lib/support')

diff --git a/src/core/lib/support/abstract.h b/src/core/lib/support/abstract.h
new file mode 100644
index 0000000000..e8b8c09458
--- /dev/null
+++ b/src/core/lib/support/abstract.h
@@ -0,0 +1,28 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SUPPORT_ABSTRACT_H
+#define GRPC_CORE_LIB_SUPPORT_ABSTRACT_H
+
+// This is needed to support abstract base classes in the c core. Since gRPC
+// doesn't have a c++ runtime, it will hit a linker error on delete unless
+// a we define a virtual operator delete. See this blog for more info:
+// https://eli.thegreenplace.net/2015/c-deleting-destructors-and-virtual-operator-delete/
+#define GRPC_ABSTRACT_BASE_CLASS static void operator delete(void *p) { abort(); }
+
+#endif /* GRPC_CORE_LIB_SUPPORT_ABSTRACT_H */
-- 
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