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