2 * Copyright 2013 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.
18 // Exception tracer library.
20 #ifndef FOLLY_EXPERIMENTAL_EXCEPTION_TRACER_EXCEPTIONTRACER_H_
21 #define FOLLY_EXPERIMENTAL_EXCEPTION_TRACER_EXCEPTIONTRACER_H_
28 namespace exception_tracer {
30 struct ExceptionInfo {
31 const std::type_info* type;
32 // The values in frames are IP (instruction pointer) addresses.
33 // They are only filled if the low-level exception tracer library is
34 // linked in or LD_PRELOADed.
35 std::vector<uintptr_t> frames; // front() is top of stack
38 std::ostream& operator<<(std::ostream& out, const ExceptionInfo& info);
41 * Get current exceptions being handled. front() is the most recent exception.
42 * There should be at most one unless rethrowing.
44 std::vector<ExceptionInfo> getCurrentExceptions();
47 * Install the terminate / unexpected handlers to dump exceptions.
49 void installHandlers();
51 } // namespace exception_tracer
54 #endif /* FOLLY_EXPERIMENTAL_EXCEPTION_TRACER_EXCEPTIONTRACER_H_ */