2 * Copyright 2017 Facebook, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
23 namespace exception_tracer {
27 * Unfortunately due to ambiguous nature of exception specifiers,
28 * standard does not allow them to appear in typedefs or alias-declarations.
29 * We, however, want callbacks to be exception safe.
30 * This dummies are an ugly workaround that problem.
32 void dummyCxaThrow(void*, std::type_info*, void (*)(void*)) noexcept;
33 void dummyCxaBeginCatch(void*) noexcept;
34 void dummyCxaRethrow() noexcept;
35 void dummyCxaEndCatch() noexcept;
36 void dummyRethrowException(std::exception_ptr) noexcept;
39 using CxaThrowType = decltype(&detail::dummyCxaThrow);
40 using CxaBeginCatchType = decltype(&detail::dummyCxaBeginCatch);
41 using CxaRethrowType = decltype(&detail::dummyCxaRethrow);
42 using CxaEndCatchType = decltype(&detail::dummyCxaEndCatch);
43 using RethrowExceptionType = decltype(&detail::dummyRethrowException);
45 void registerCxaThrowCallback(CxaThrowType callback);
46 void registerCxaBeginCatchCallback(CxaBeginCatchType callback);
47 void registerCxaRethrowCallback(CxaRethrowType callback);
48 void registerCxaEndCatchCallback(CxaEndCatchType callback);
49 void registerRethrowExceptionCallback(RethrowExceptionType callback);
50 } // namespace exception_tracer