cpp.react/include/react/engine/ToposortEngine.h at master · Schroedi/cpp.react · GitHub

History

210 lines (162 loc) · 6.69 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

// Copyright Sebastian Jeckel 2014.

// Distributed under the Boost Software License, Version 1.0.

// (See accompanying file LICENSE_1_0.txt or copy at

// http://www.boost.org/LICENSE_1_0.txt)

#ifndef REACT_DETAIL_ENGINE_TOPOSORTENGINE_H_INCLUDED

#define REACT_DETAIL_ENGINE_TOPOSORTENGINE_H_INCLUDED

#pragma once

#include "react/detail/Defs.h"

#include <atomic>

#include <utility>

#include <type_traits>

#include <vector>

#include "tbb/concurrent_vector.h"

#include "tbb/spin_mutex.h"

#include "react/common/Containers.h"

#include "react/common/TopoQueue.h"

#include "react/common/Types.h"

#include "react/detail/EngineBase.h"

/***************************************/ REACT_IMPL_BEGIN /**************************************/

namespace toposort {

using std::atomic;

using std::vector;

using tbb::concurrent_vector;

using tbb::spin_mutex;

///////////////////////////////////////////////////////////////////////////////////////////////////

/// Parameters

///////////////////////////////////////////////////////////////////////////////////////////////////

static const uint min_weight = 1;

static const uint grain_size = 100;

///////////////////////////////////////////////////////////////////////////////////////////////////

/// SeqNode

///////////////////////////////////////////////////////////////////////////////////////////////////

class SeqNode : public IReactiveNode

{

public:

int Level { 0 };

int NewLevel { 0 };

bool Queued { false };

NodeVector<SeqNode> Successors;

};

///////////////////////////////////////////////////////////////////////////////////////////////////

/// ParNode

///////////////////////////////////////////////////////////////////////////////////////////////////

class ParNode : public IReactiveNode

{

public:

using InvalidateMutexT = spin_mutex;

int Level { 0 };

int NewLevel { 0 };

atomic<bool> Collected { false };

NodeVector<ParNode> Successors;

InvalidateMutexT InvalidateMutex;

};

///////////////////////////////////////////////////////////////////////////////////////////////////

/// ShiftRequestData

///////////////////////////////////////////////////////////////////////////////////////////////////

struct DynRequestData

{

bool ShouldAttach;

ParNode* Node;

ParNode* Parent;

};

///////////////////////////////////////////////////////////////////////////////////////////////////

/// ExclusiveSeqTurn

///////////////////////////////////////////////////////////////////////////////////////////////////

class SeqTurn : public TurnBase

{

public:

SeqTurn(TurnIdT id, TransactionFlagsT flags);

};

///////////////////////////////////////////////////////////////////////////////////////////////////

/// ExclusiveParTurn

///////////////////////////////////////////////////////////////////////////////////////////////////

class ParTurn : public TurnBase

{

public:

ParTurn(TurnIdT id, TransactionFlagsT flags);

};

///////////////////////////////////////////////////////////////////////////////////////////////////

/// Functors

///////////////////////////////////////////////////////////////////////////////////////////////////

template <typename T>

struct GetLevelFunctor

{

int operator()(const T* x) const { return x->Level; }

};

template <typename T>

struct GetWeightFunctor

{

uint operator()(T* x) const { return x->IsHeavyweight() ? grain_size : 1; }

};

///////////////////////////////////////////////////////////////////////////////////////////////////

/// EngineBase

///////////////////////////////////////////////////////////////////////////////////////////////////

template <typename TNode, typename TTurn>

class EngineBase : public IReactiveEngine<TNode,TTurn>

{

public:

void OnNodeAttach(TNode& node, TNode& parent);

void OnNodeDetach(TNode& node, TNode& parent);

void OnInputChange(TNode& node, TTurn& turn);

void OnNodePulse(TNode& node, TTurn& turn);

protected:

virtual void processChildren(TNode& node, TTurn& turn) = 0;

};

///////////////////////////////////////////////////////////////////////////////////////////////////

/// SeqEngineBase

///////////////////////////////////////////////////////////////////////////////////////////////////

class SeqEngineBase : public EngineBase<SeqNode,SeqTurn>

{

public:

using TopoQueueT = TopoQueue<SeqNode*, GetLevelFunctor<SeqNode>>;

void Propagate(SeqTurn& turn);

void OnDynamicNodeAttach(SeqNode& node, SeqNode& parent, SeqTurn& turn);

void OnDynamicNodeDetach(SeqNode& node, SeqNode& parent, SeqTurn& turn);

private:

void invalidateSuccessors(SeqNode& node);

virtual void processChildren(SeqNode& node, SeqTurn& turn) override;

TopoQueueT scheduledNodes_;

};

///////////////////////////////////////////////////////////////////////////////////////////////////

/// ParEngineBase

///////////////////////////////////////////////////////////////////////////////////////////////////

class ParEngineBase : public EngineBase<ParNode,ParTurn>

{

public:

using DynRequestVectT = concurrent_vector<DynRequestData>;

using TopoQueueT = ConcurrentTopoQueue

ParNode*,

grain_size,

GetLevelFunctor<ParNode>,

GetWeightFunctor<ParNode>

void Propagate(ParTurn& turn);

void OnDynamicNodeAttach(ParNode& node, ParNode& parent, ParTurn& turn);

void OnDynamicNodeDetach(ParNode& node, ParNode& parent, ParTurn& turn);

private:

void applyDynamicAttach(ParNode& node, ParNode& parent, ParTurn& turn);

void applyDynamicDetach(ParNode& node, ParNode& parent, ParTurn& turn);

void invalidateSuccessors(ParNode& node);

virtual void processChildren(ParNode& node, ParTurn& turn) override;

TopoQueueT topoQueue_;

DynRequestVectT dynRequests_;

};

} // ~namespace toposort

/****************************************/ REACT_IMPL_END /***************************************/

/*****************************************/ REACT_BEGIN /*****************************************/

template <REACT_IMPL::EPropagationMode>

class ToposortEngine;

template <> class ToposortEngine<REACT_IMPL::sequential_propagation> :

public REACT_IMPL::toposort::SeqEngineBase

{};

template <> class ToposortEngine<REACT_IMPL::parallel_propagation> :

public REACT_IMPL::toposort::ParEngineBase

{};

/******************************************/ REACT_END /******************************************/

/***************************************/ REACT_IMPL_BEGIN /**************************************/

template <>

struct NodeUpdateTimerEnabled<ToposortEngine<parallel_propagation>> : std::true_type {};

/****************************************/ REACT_IMPL_END /***************************************/

#endif // REACT_DETAIL_ENGINE_TOPOSORTENGINE_H_INCLUDED

cpp.react/include/react/engine/ToposortEngine.h at master · Schroedi/cpp.react · GitHub

Expand file tree

Breadcrumbs

ToposortEngine.h

Latest commit

History

Breadcrumbs

ToposortEngine.h

File metadata and controls