| /* |
| * Copyright 2017 Facebook, Inc. |
| * |
| * 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. |
| */ |
| |
| #pragma once |
| |
| #include <exception> |
| |
| #include <folly/UncaughtExceptions.h> |
| |
| namespace folly { namespace detail { |
| |
| /** |
| * Used to check if a new uncaught exception was thrown by monitoring the |
| * number of uncaught exceptions. |
| * |
| * Usage: |
| * - create a new UncaughtExceptionCounter object |
| * - call isNewUncaughtException() on the new object to check if a new |
| * uncaught exception was thrown since the object was created |
| */ |
| class UncaughtExceptionCounter { |
| public: |
| UncaughtExceptionCounter() noexcept |
| : exceptionCount_(folly::uncaught_exceptions()) {} |
| |
| UncaughtExceptionCounter(const UncaughtExceptionCounter& other) noexcept |
| : exceptionCount_(other.exceptionCount_) {} |
| |
| bool isNewUncaughtException() noexcept { |
| return folly::uncaught_exceptions() > exceptionCount_; |
| } |
| |
| private: |
| int exceptionCount_; |
| }; |
| |
| }} // namespaces |