53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
/*
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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 <cstdint>
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namespace folly {
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/**
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* Observes the execution of a task.
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*/
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class ExecutionObserver {
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public:
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virtual ~ExecutionObserver() {}
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/**
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* Called when a task is about to start executing.
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*
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* @param id Unique id for the task which is starting.
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*/
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virtual void starting(uintptr_t id) noexcept = 0;
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/**
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* Called when a task is ready to run.
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*
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* @param id Unique id for the task which is ready to run.
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*/
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virtual void runnable(uintptr_t id) noexcept = 0;
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/**
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* Called just after a task stops executing.
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*
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* @param id Unique id for the task which stopped.
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*/
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virtual void stopped(uintptr_t id) noexcept = 0;
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};
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} // namespace folly
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