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- /*
- * Copyright 2017-present 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 <memory>
- #include <string>
- #include <vector>
- #include <folly/Indestructible.h>
- #include <folly/Synchronized.h>
- #include <folly/ThreadLocal.h>
- namespace folly {
- /**
- * A hook for tracking which threads belong to which thread pools.
- * This is used only by a gdb extension to aid in debugging. You won't be able
- * to see any useful information from within C++ code.
- *
- * An instance of ThreadPoolListHook should be created in the thread pool class
- * that you want to keep track of. Then, to register a thread you call
- * registerThread() on your instance of ThreadPoolListHook from that thread.
- *
- * When a thread exits it will be removed from the list
- * When the thread pool is destroyed, it will be removed from the list
- */
- class ThreadPoolListHook {
- public:
- /**
- * Name is used to identify the thread pool when listing threads.
- */
- explicit ThreadPoolListHook(std::string name);
- ~ThreadPoolListHook();
- /**
- * Call this from any new thread that the thread pool creates.
- */
- void registerThread();
- ThreadPoolListHook(const ThreadPoolListHook& other) = delete;
- ThreadPoolListHook& operator=(const ThreadPoolListHook&) = delete;
- private:
- ThreadPoolListHook();
- };
- } // namespace folly
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