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51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
/*
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* AnnotateActor.h
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*
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* This source file is part of the FoundationDB open source project
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*
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* Copyright 2013-2021 Apple Inc. and the FoundationDB project authors
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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 "flow/flow.h"
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#include "flow/network.h"
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// Used to manually instrument waiting actors to collect samples for the
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// sampling profiler.
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struct AnnotateActor {
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unsigned index;
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AnnotateActor() {}
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// This API isn't great. Ideally, no cleanup call is needed. I ran into an
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// issue around the destructor being called twice because an instance of
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// this class has to be stored as a class member (otherwise it goes away
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// when wait is called), and due to how Flow does code generation the
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// member will be default initialized and then initialized again when it is
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// initially set. Then, the destructor will be called twice, causing issues
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// when the WriteOnlySet tries to erase the same index twice. I'm working
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// on this :)
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void start() {
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index = g_network->getActorLineageSet().insert(currentLineage);
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}
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void complete() {
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g_network->getActorLineageSet().erase(index);
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}
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};
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