Merge pull request #13288 from ncteisen/inheritance-in-core
Support Manually Constructed Virtual Functions in C Corepull/13483/head
Noah Eisen
8 years ago
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GitHub
commit
9c26f6866a
17 changed files with 421 additions and 1 deletions
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/*
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* |
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* Copyright 2017 gRPC authors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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*/ |
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#ifndef GRPC_CORE_LIB_SUPPORT_ABSTRACT_H |
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#define GRPC_CORE_LIB_SUPPORT_ABSTRACT_H |
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// This is needed to support abstract base classes in the c core. Since gRPC
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// doesn't have a c++ runtime, it will hit a linker error on delete unless
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// we define a virtual operator delete. See this blog for more info:
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// https://eli.thegreenplace.net/2015/c-deleting-destructors-and-virtual-operator-delete/
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#define GRPC_ABSTRACT_BASE_CLASS \ |
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static void operator delete(void* p) { abort(); } |
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#endif /* GRPC_CORE_LIB_SUPPORT_ABSTRACT_H */ |
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/*
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* |
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* Copyright 2017 gRPC authors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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*/ |
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/* Test of gpr synchronization support. */ |
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#include "src/core/lib/support/manual_constructor.h" |
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#include <grpc/support/alloc.h> |
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#include <grpc/support/log.h> |
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#include <grpc/support/sync.h> |
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#include <grpc/support/thd.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <cstring> |
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#include "src/core/lib/support/abstract.h" |
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#include "test/core/util/test_config.h" |
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class A { |
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public: |
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A() {} |
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virtual ~A() {} |
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virtual const char* foo() { return "A_foo"; } |
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virtual const char* bar() { return "A_bar"; } |
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GRPC_ABSTRACT_BASE_CLASS |
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}; |
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class B : public A { |
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public: |
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B() {} |
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~B() {} |
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const char* foo() override { return "B_foo"; } |
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char get_junk() { return junk[0]; } |
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private: |
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char junk[1000]; |
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}; |
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class C : public B { |
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public: |
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C() {} |
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~C() {} |
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virtual const char* bar() { return "C_bar"; } |
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char get_more_junk() { return more_junk[0]; } |
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private: |
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char more_junk[1000]; |
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}; |
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class D : public A { |
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public: |
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virtual const char* bar() { return "D_bar"; } |
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}; |
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static void basic_test() { |
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grpc_core::PolymorphicManualConstructor<A, B> poly; |
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poly.Init<B>(); |
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GPR_ASSERT(!strcmp(poly->foo(), "B_foo")); |
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GPR_ASSERT(!strcmp(poly->bar(), "A_bar")); |
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} |
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static void complex_test() { |
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grpc_core::PolymorphicManualConstructor<A, B, C, D> polyB; |
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polyB.Init<B>(); |
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GPR_ASSERT(!strcmp(polyB->foo(), "B_foo")); |
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GPR_ASSERT(!strcmp(polyB->bar(), "A_bar")); |
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grpc_core::PolymorphicManualConstructor<A, B, C, D> polyC; |
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polyC.Init<C>(); |
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GPR_ASSERT(!strcmp(polyC->foo(), "B_foo")); |
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GPR_ASSERT(!strcmp(polyC->bar(), "C_bar")); |
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grpc_core::PolymorphicManualConstructor<A, B, C, D> polyD; |
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polyD.Init<D>(); |
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GPR_ASSERT(!strcmp(polyD->foo(), "A_foo")); |
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GPR_ASSERT(!strcmp(polyD->bar(), "D_bar")); |
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} |
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/* ------------------------------------------------- */ |
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int main(int argc, char* argv[]) { |
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grpc_test_init(argc, argv); |
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basic_test(); |
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complex_test(); |
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return 0; |
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} |
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