3 * Copyright 2017 gRPC authors.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
19 #ifndef GRPC_CORE_LIB_GPRPP_ABSTRACT_H
20 #define GRPC_CORE_LIB_GPRPP_ABSTRACT_H
22 #if GRPC_USE_CPP_STD_LIB
24 #define GRPC_ABSTRACT_BASE_CLASS
26 #define GRPC_ABSTRACT = 0
30 // This is needed to support abstract base classes in the c core. Since gRPC
31 // doesn't have a c++ runtime, it will hit a linker error on delete unless
32 // we define a virtual operator delete. See this blog for more info:
33 // https://eli.thegreenplace.net/2015/c-deleting-destructors-and-virtual-operator-delete/
34 #define GRPC_ABSTRACT_BASE_CLASS \
35 static void operator delete(void* p) { abort(); }
37 // gRPC currently can't depend on libstdc++, so we can't use "= 0" for
38 // pure virtual methods. Instead, we use this macro.
39 #define GRPC_ABSTRACT \
41 gpr_log(GPR_ERROR, "Function marked GRPC_ABSTRACT was not implemented"); \
45 #endif // GRPC_USE_CPP_STD_LIB
47 #endif /* GRPC_CORE_LIB_GPRPP_ABSTRACT_H */