92 lines
2.2 KiB
C++
92 lines
2.2 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 2013-2022 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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#include <string_view>
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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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bool set;
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AnnotateActor() : set(false) {}
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AnnotateActor(LineageReference* lineage) : set(false) {
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#ifdef ENABLE_SAMPLING
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if (lineage->getPtr() != 0) {
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index = g_network->getActorLineageSet().insert(*lineage);
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set = (index != ActorLineageSet::npos);
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}
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#endif
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}
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AnnotateActor(const AnnotateActor& other) = delete;
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AnnotateActor(AnnotateActor&& other) = delete;
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AnnotateActor& operator=(const AnnotateActor& other) = delete;
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AnnotateActor& operator=(AnnotateActor&& other) {
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if (this == &other) {
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return *this;
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}
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this->index = other.index;
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this->set = other.set;
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other.set = false;
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return *this;
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}
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~AnnotateActor() {
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#ifdef ENABLE_SAMPLING
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if (set) {
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g_network->getActorLineageSet().erase(index);
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}
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#endif
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}
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};
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enum class WaitState { Disk, Network, Running };
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// usually we shouldn't use `using namespace` in a header file, but literals should be safe as user defined literals
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// need to be prefixed with `_`
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using namespace std::literals;
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constexpr std::string_view to_string(WaitState st) {
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switch (st) {
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case WaitState::Disk:
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return "Disk"sv;
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case WaitState::Network:
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return "Network"sv;
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case WaitState::Running:
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return "Running"sv;
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default:
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return ""sv;
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}
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}
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#ifdef ENABLE_SAMPLING
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extern std::map<WaitState, std::function<std::vector<Reference<ActorLineage>>()>> samples;
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#endif
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