#include "clang/StaticAnalyzer/Core/PathSensitive/ExplodedGraph.h"

Public Types
using	NodeTy = ExplodedNode

using	AllNodesTy = llvm::FoldingSet< ExplodedNode >

using	roots_iterator = NodeVector::iterator

using	const_roots_iterator = NodeVector::const_iterator

using	eop_iterator = NodeVector::iterator

using	const_eop_iterator = NodeVector::const_iterator

using	node_iterator = AllNodesTy::iterator

using	const_node_iterator = AllNodesTy::const_iterator

using	NodeMap = llvm::DenseMap< const ExplodedNode , ExplodedNode >

Public Member Functions
	ExplodedGraph ()

	~ExplodedGraph ()

ExplodedNode *	getNode (const ProgramPoint &L, ProgramStateRef State, bool IsSink=false, bool *IsNew=nullptr)
	Retrieve the node associated with a (Location,State) pair, where the 'Location' is a ProgramPoint in the CFG.

ExplodedNode *	createUncachedNode (const ProgramPoint &L, ProgramStateRef State, int64_t Id, bool IsSink=false)
	Create a node for a (Location, State) pair, but don't store it for deduplication later.

std::unique_ptr< ExplodedGraph >	MakeEmptyGraph () const

ExplodedNode *	addRoot (ExplodedNode *V)
	addRoot - Add an untyped node to the set of roots.

ExplodedNode *	addEndOfPath (ExplodedNode *V)
	addEndOfPath - Add an untyped node to the set of EOP nodes.

unsigned	num_roots () const

unsigned	num_eops () const

bool	empty () const

unsigned	size () const

void	reserve (unsigned NodeCount)

node_iterator	nodes_begin ()

node_iterator	nodes_end ()

const_node_iterator	nodes_begin () const

const_node_iterator	nodes_end () const

roots_iterator	roots_begin ()

roots_iterator	roots_end ()

const_roots_iterator	roots_begin () const

const_roots_iterator	roots_end () const

eop_iterator	eop_begin ()

eop_iterator	eop_end ()

const_eop_iterator	eop_begin () const

const_eop_iterator	eop_end () const

llvm::BumpPtrAllocator &	getAllocator ()

BumpVectorContext &	getNodeAllocator ()

std::unique_ptr< ExplodedGraph >	trim (ArrayRef< const NodeTy * > Nodes, InterExplodedGraphMap ForwardMap=nullptr, InterExplodedGraphMap InverseMap=nullptr) const
	Creates a trimmed version of the graph that only contains paths leading to the given nodes.

void	enableNodeReclamation (unsigned Interval)
	Enable tracking of recently allocated nodes for potential reclamation when calling reclaimRecentlyAllocatedNodes().

void	reclaimRecentlyAllocatedNodes ()
	Reclaim "uninteresting" nodes created since the last time this method was called.

Static Public Member Functions
static bool	isInterestingLValueExpr (const Expr *Ex)
	Returns true if nodes for the given expression kind are always kept around.

Protected Types
using	NodeVector = std::vector< ExplodedNode * >

Protected Attributes
NodeVector	Roots
	The roots of the simulation graph.

NodeVector	EndNodes
	The nodes in the simulation graph which have been specially marked as the endpoint of an abstract simulation path.

llvm::FoldingSet< ExplodedNode >	Nodes
	Nodes - The nodes in the graph.

BumpVectorContext	BVC
	BVC - Allocator and context for allocating nodes and their predecessor and successor groups.

int64_t	NumNodes = 0
	NumNodes - The number of nodes in the graph.

NodeVector	ChangedNodes
	A list of recently allocated nodes that can potentially be recycled.

NodeVector	FreeNodes
	A list of nodes that can be reused.

unsigned	ReclaimNodeInterval = 0
	Determines how often nodes are reclaimed.

unsigned	ReclaimCounter
	Counter to determine when to reclaim nodes.

Friends
class	CoreEngine

Detailed Description

Definition at line 302 of file ExplodedGraph.h.

Member Typedef Documentation

◆ AllNodesTy

using clang::ento::ExplodedGraph::AllNodesTy = llvm::FoldingSet<ExplodedNode>

Definition at line 390 of file ExplodedGraph.h.

◆ const_eop_iterator

using clang::ento::ExplodedGraph::const_eop_iterator = NodeVector::const_iterator

Definition at line 394 of file ExplodedGraph.h.

◆ const_node_iterator

using clang::ento::ExplodedGraph::const_node_iterator = AllNodesTy::const_iterator

Definition at line 396 of file ExplodedGraph.h.

◆ const_roots_iterator

using clang::ento::ExplodedGraph::const_roots_iterator = NodeVector::const_iterator

Definition at line 392 of file ExplodedGraph.h.

◆ eop_iterator

using clang::ento::ExplodedGraph::eop_iterator = NodeVector::iterator

Definition at line 393 of file ExplodedGraph.h.

◆ node_iterator

using clang::ento::ExplodedGraph::node_iterator = AllNodesTy::iterator

Definition at line 395 of file ExplodedGraph.h.

◆ NodeMap

using clang::ento::ExplodedGraph::NodeMap = llvm::DenseMap<const ExplodedNode *, ExplodedNode *>

Definition at line 425 of file ExplodedGraph.h.

◆ NodeTy

using clang::ento::ExplodedGraph::NodeTy = ExplodedNode

Definition at line 389 of file ExplodedGraph.h.

◆ NodeVector

using clang::ento::ExplodedGraph::NodeVector = std::vector<ExplodedNode *>

protected

Definition at line 307 of file ExplodedGraph.h.

◆ roots_iterator

using clang::ento::ExplodedGraph::roots_iterator = NodeVector::iterator

Definition at line 391 of file ExplodedGraph.h.

Constructor & Destructor Documentation

◆ ExplodedGraph()

ExplodedGraph::ExplodedGraph ( )

default

◆ ~ExplodedGraph()

ExplodedGraph::~ExplodedGraph ( )

default

Member Function Documentation

◆ addEndOfPath()

ExplodedNode * clang::ento::ExplodedGraph::addEndOfPath ( ExplodedNode * V )

inline

addEndOfPath - Add an untyped node to the set of EOP nodes.

Definition at line 375 of file ExplodedGraph.h.

References EndNodes, and V.

Referenced by clang::ento::CoreEngine::enqueueEndOfFunction().

◆ addRoot()

ExplodedNode * clang::ento::ExplodedGraph::addRoot ( ExplodedNode * V )

inline

addRoot - Add an untyped node to the set of roots.

Definition at line 369 of file ExplodedGraph.h.

References Roots, and V.

Referenced by clang::ento::CoreEngine::ExecuteWorkList().

◆ createUncachedNode()

ExplodedNode * ExplodedGraph::createUncachedNode	(	const ProgramPoint &	L,
		ProgramStateRef	State,
		int64_t	Id,
		bool	IsSink = `false`
	)

Create a node for a (Location, State) pair, but don't store it for deduplication later.

This is useful when copying an already completed ExplodedGraph for further processing.

Definition at line 431 of file ExplodedGraph.cpp.

References getAllocator(), Id, and V.

◆ empty()

bool clang::ento::ExplodedGraph::empty ( ) const

inline

Definition at line 383 of file ExplodedGraph.h.

References NumNodes.

◆ enableNodeReclamation()

void clang::ento::ExplodedGraph::enableNodeReclamation ( unsigned Interval )

inline

Enable tracking of recently allocated nodes for potential reclamation when calling reclaimRecentlyAllocatedNodes().

Definition at line 444 of file ExplodedGraph.h.

References ReclaimCounter, and ReclaimNodeInterval.

Referenced by clang::ento::ExprEngine::ExprEngine().

◆ eop_begin() [1/2]

eop_iterator clang::ento::ExplodedGraph::eop_begin ( )

inline

Definition at line 414 of file ExplodedGraph.h.

References EndNodes.

Referenced by clang::ento::CoreEngine::ExecuteWorkListWithInitialState().

◆ eop_begin() [2/2]

const_eop_iterator clang::ento::ExplodedGraph::eop_begin ( ) const

inline

Definition at line 418 of file ExplodedGraph.h.

References EndNodes.

◆ eop_end() [1/2]

eop_iterator clang::ento::ExplodedGraph::eop_end ( )

inline

Definition at line 416 of file ExplodedGraph.h.

References EndNodes.

Referenced by clang::ento::CoreEngine::ExecuteWorkListWithInitialState().

◆ eop_end() [2/2]

const_eop_iterator clang::ento::ExplodedGraph::eop_end ( ) const

inline

Definition at line 420 of file ExplodedGraph.h.

References EndNodes.

◆ getAllocator()

llvm::BumpPtrAllocator & clang::ento::ExplodedGraph::getAllocator ( )

inline

Definition at line 422 of file ExplodedGraph.h.

References BVC, and clang::BumpVectorContext::getAllocator().

Referenced by createUncachedNode(), and getNode().

◆ getNode()

ExplodedNode * ExplodedGraph::getNode	(	const ProgramPoint &	L,
		ProgramStateRef	State,
		bool	IsSink = `false`,
		bool *	IsNew = `nullptr`
	)

Retrieve the node associated with a (Location,State) pair, where the 'Location' is a ProgramPoint in the CFG.

If no node for this pair exists, it is created. IsNew is set to true if the node was freshly created.

Definition at line 393 of file ExplodedGraph.cpp.

References ChangedNodes, FreeNodes, getAllocator(), Nodes, NumNodes, clang::ento::ExplodedNode::Profile(), ReclaimNodeInterval, and V.

Referenced by clang::ento::CoreEngine::enqueueStmtNode(), clang::ento::CoreEngine::ExecuteWorkList(), clang::ento::SwitchNodeBuilder::generateCaseStmtNode(), clang::ento::SwitchNodeBuilder::generateDefaultCaseNode(), clang::ento::IndirectGotoNodeBuilder::generateNode(), clang::ento::NodeBuilder::generateNodeImpl(), clang::ento::ExprEngine::processCallEnter(), and clang::ento::ExprEngine::processCallExit().

◆ getNodeAllocator()

BumpVectorContext & clang::ento::ExplodedGraph::getNodeAllocator ( )

inline

Definition at line 423 of file ExplodedGraph.h.

References BVC.

◆ isInterestingLValueExpr()

bool ExplodedGraph::isInterestingLValueExpr ( const Expr * Ex )

static

Returns true if nodes for the given expression kind are always kept around.

Definition at line 50 of file ExplodedGraph.cpp.

References clang::Expr::isLValue().

◆ MakeEmptyGraph()

std::unique_ptr< ExplodedGraph > clang::ento::ExplodedGraph::MakeEmptyGraph ( ) const

inline

Definition at line 364 of file ExplodedGraph.h.

Referenced by trim().

◆ nodes_begin() [1/2]

node_iterator clang::ento::ExplodedGraph::nodes_begin ( )

inline

Definition at line 398 of file ExplodedGraph.h.

References Nodes.

◆ nodes_begin() [2/2]

const_node_iterator clang::ento::ExplodedGraph::nodes_begin ( ) const

inline

Definition at line 402 of file ExplodedGraph.h.

References Nodes.

◆ nodes_end() [1/2]

node_iterator clang::ento::ExplodedGraph::nodes_end ( )

inline

Definition at line 400 of file ExplodedGraph.h.

References Nodes.

◆ nodes_end() [2/2]

const_node_iterator clang::ento::ExplodedGraph::nodes_end ( ) const

inline

Definition at line 404 of file ExplodedGraph.h.

References Nodes.

◆ num_eops()

unsigned clang::ento::ExplodedGraph::num_eops ( ) const

inline

Definition at line 381 of file ExplodedGraph.h.

References EndNodes.

◆ num_roots()

unsigned clang::ento::ExplodedGraph::num_roots ( ) const

inline

Definition at line 380 of file ExplodedGraph.h.

References Roots.

Referenced by clang::ento::CoreEngine::ExecuteWorkList().

◆ reclaimRecentlyAllocatedNodes()

void ExplodedGraph::reclaimRecentlyAllocatedNodes ( )

Reclaim "uninteresting" nodes created since the last time this method was called.

Definition at line 169 of file ExplodedGraph.cpp.

References ChangedNodes, ReclaimCounter, and ReclaimNodeInterval.

Referenced by clang::ento::ExprEngine::ProcessStmt().

◆ reserve()

void clang::ento::ExplodedGraph::reserve ( unsigned NodeCount )

inline

Definition at line 386 of file ExplodedGraph.h.

References Nodes.

Referenced by clang::ento::CoreEngine::ExecuteWorkList().

◆ roots_begin() [1/2]

roots_iterator clang::ento::ExplodedGraph::roots_begin ( )

inline

Definition at line 406 of file ExplodedGraph.h.

References Roots.

Referenced by llvm::GraphTraits< clang::ento::ExplodedGraph * >::getEntryNode(), clang::ento::ExprEngine::getRootLocationContext(), and clang::ento::ExprEngine::processCFGBlockEntrance().

◆ roots_begin() [2/2]

const_roots_iterator clang::ento::ExplodedGraph::roots_begin ( ) const

inline

Definition at line 410 of file ExplodedGraph.h.

References Roots.

◆ roots_end() [1/2]

roots_iterator clang::ento::ExplodedGraph::roots_end ( )

inline

Definition at line 408 of file ExplodedGraph.h.

References Roots.

Referenced by clang::ento::ExprEngine::getRootLocationContext().

◆ roots_end() [2/2]

const_roots_iterator clang::ento::ExplodedGraph::roots_end ( ) const

inline

Definition at line 412 of file ExplodedGraph.h.

References Roots.

◆ size()

unsigned clang::ento::ExplodedGraph::size ( ) const

inline

Definition at line 384 of file ExplodedGraph.h.

References NumNodes.

◆ trim()

std::unique_ptr< ExplodedGraph > ExplodedGraph::trim	(	ArrayRef< const NodeTy * >	Nodes,
		InterExplodedGraphMap *	ForwardMap = `nullptr`,
		InterExplodedGraphMap *	InverseMap = `nullptr`
	)		const

Creates a trimmed version of the graph that only contains paths leading to the given nodes.

Parameters

	Nodes	The nodes which must appear in the final graph. Presumably these are end-of-path nodes (i.e. they have no successors).
[out]	ForwardMap	A optional map from nodes in this graph to nodes in the returned graph.
[out]	InverseMap	An optional map from nodes in the returned graph to nodes in this graph.

Returns: The trimmed graph

Definition at line 441 of file ExplodedGraph.cpp.

References clang::ento::ExplodedNode::addPredecessor(), clang::ento::ExplodedNode::getID(), clang::ento::ExplodedNode::getLocation(), clang::ento::ExplodedNode::isSink(), MakeEmptyGraph(), and Nodes.

Referenced by clang::ento::ExprEngine::DumpGraph().

Friends And Related Function Documentation

◆ CoreEngine

friend class CoreEngine

friend

Definition at line 304 of file ExplodedGraph.h.

Member Data Documentation

◆ BVC

BumpVectorContext clang::ento::ExplodedGraph::BVC

protected

BVC - Allocator and context for allocating nodes and their predecessor and successor groups.

Definition at line 324 of file ExplodedGraph.h.

Referenced by getAllocator(), and getNodeAllocator().

◆ ChangedNodes

NodeVector clang::ento::ExplodedGraph::ChangedNodes

protected

A list of recently allocated nodes that can potentially be recycled.

Definition at line 330 of file ExplodedGraph.h.

Referenced by getNode(), and reclaimRecentlyAllocatedNodes().

◆ EndNodes

NodeVector clang::ento::ExplodedGraph::EndNodes

protected

The nodes in the simulation graph which have been specially marked as the endpoint of an abstract simulation path.

Definition at line 317 of file ExplodedGraph.h.

Referenced by addEndOfPath(), eop_begin(), eop_end(), and num_eops().

◆ FreeNodes

NodeVector clang::ento::ExplodedGraph::FreeNodes

protected

A list of nodes that can be reused.

Definition at line 333 of file ExplodedGraph.h.

Referenced by getNode().

◆ Nodes

llvm::FoldingSet<ExplodedNode> clang::ento::ExplodedGraph::Nodes

protected

Nodes - The nodes in the graph.

Definition at line 320 of file ExplodedGraph.h.

Referenced by getNode(), nodes_begin(), nodes_end(), reserve(), and trim().

◆ NumNodes

int64_t clang::ento::ExplodedGraph::NumNodes = 0

protected

NumNodes - The number of nodes in the graph.

Definition at line 327 of file ExplodedGraph.h.

Referenced by empty(), getNode(), and size().

◆ ReclaimCounter

unsigned clang::ento::ExplodedGraph::ReclaimCounter

protected

Counter to determine when to reclaim nodes.

Definition at line 341 of file ExplodedGraph.h.

Referenced by enableNodeReclamation(), and reclaimRecentlyAllocatedNodes().

◆ ReclaimNodeInterval

unsigned clang::ento::ExplodedGraph::ReclaimNodeInterval = 0

protected

Determines how often nodes are reclaimed.

If this is 0, nodes will never be reclaimed.

Definition at line 338 of file ExplodedGraph.h.

Referenced by enableNodeReclamation(), getNode(), and reclaimRecentlyAllocatedNodes().

◆ Roots

NodeVector clang::ento::ExplodedGraph::Roots

protected

The roots of the simulation graph.

Usually there will be only one, but clients are free to establish multiple subgraphs within a single SimulGraph. Moreover, these subgraphs can often merge when paths from different roots reach the same state at the same program location.

Definition at line 313 of file ExplodedGraph.h.

Referenced by addRoot(), num_roots(), roots_begin(), and roots_end().

The documentation for this class was generated from the following files:

include/clang/StaticAnalyzer/Core/PathSensitive/ExplodedGraph.h
lib/StaticAnalyzer/Core/ExplodedGraph.cpp

Public Types

Public Member Functions

Static Public Member Functions

Protected Types

Protected Attributes

Friends

Detailed Description

Member Typedef Documentation

◆ AllNodesTy

◆ const_eop_iterator

◆ const_node_iterator

◆ const_roots_iterator

◆ eop_iterator

◆ node_iterator

◆ NodeMap

◆ NodeTy

◆ NodeVector

◆ roots_iterator

Constructor & Destructor Documentation

◆ ExplodedGraph()

◆ ~ExplodedGraph()

Member Function Documentation

◆ addEndOfPath()

◆ addRoot()

◆ createUncachedNode()

◆ empty()

◆ enableNodeReclamation()

◆ eop_begin() [1/2]

◆ eop_begin() [2/2]

◆ eop_end() [1/2]

◆ eop_end() [2/2]

◆ getAllocator()

◆ getNode()

◆ getNodeAllocator()

◆ isInterestingLValueExpr()

◆ MakeEmptyGraph()

◆ nodes_begin() [1/2]

◆ nodes_begin() [2/2]

◆ nodes_end() [1/2]

◆ nodes_end() [2/2]

◆ num_eops()

◆ num_roots()

◆ reclaimRecentlyAllocatedNodes()

◆ reserve()

◆ roots_begin() [1/2]

◆ roots_begin() [2/2]

◆ roots_end() [1/2]

◆ roots_end() [2/2]

◆ size()

◆ trim()

Friends And Related Function Documentation

◆ CoreEngine

Member Data Documentation

◆ BVC

◆ ChangedNodes

◆ EndNodes

◆ FreeNodes

◆ Nodes

◆ NumNodes

◆ ReclaimCounter

◆ ReclaimNodeInterval

◆ Roots