Tracks responsibility for materialization, and mediates interactions between MaterializationUnits and JDs. More...

#include "llvm/ExecutionEngine/Orc/Core.h"

Public Member Functions
	MaterializationResponsibility (MaterializationResponsibility &&)=delete

MaterializationResponsibility &	operator= (MaterializationResponsibility &&)=delete

	~MaterializationResponsibility ()
	Destruct a MaterializationResponsibility instance.

const ResourceTrackerSP &	getResourceTracker () const
	Return the ResourceTracker associated with this instance.

template<typename Func >
Error	withResourceKeyDo (Func &&F) const
	Runs the given callback under the session lock, passing in the associated ResourceKey.

JITDylib &	getTargetJITDylib () const
	Returns the target JITDylib that these symbols are being materialized into.

ExecutionSession &	getExecutionSession () const
	Returns the ExecutionSession for this instance.

const SymbolFlagsMap &	getSymbols () const
	Returns the symbol flags map for this responsibility instance.

const SymbolStringPtr &	getInitializerSymbol () const
	Returns the initialization pseudo-symbol, if any.

SymbolNameSet	getRequestedSymbols () const
	Returns the names of any symbols covered by this MaterializationResponsibility object that have queries pending.

Error	notifyResolved (const SymbolMap &Symbols)
	Notifies the target JITDylib that the given symbols have been resolved.

Error	notifyEmitted (ArrayRef< SymbolDependenceGroup > DepGroups)
	Notifies the target JITDylib (and any pending queries on that JITDylib) that all symbols covered by this MaterializationResponsibility instance have been emitted.

Error	defineMaterializing (SymbolFlagsMap SymbolFlags)
	Attempt to claim responsibility for new definitions.

void	failMaterialization ()
	Notify all not-yet-emitted covered by this MaterializationResponsibility instance that an error has occurred.

Error	replace (std::unique_ptr< MaterializationUnit > MU)
	Transfers responsibility to the given MaterializationUnit for all symbols defined by that MaterializationUnit.

Expected< std::unique_ptr< MaterializationResponsibility > >	delegate (const SymbolNameSet &Symbols)
	Delegates responsibility for the given symbols to the returned materialization responsibility.

Friends
class	ExecutionSession

class	JITDylib

Detailed Description

Tracks responsibility for materialization, and mediates interactions between MaterializationUnits and JDs.

An instance of this class is passed to MaterializationUnits when their materialize method is called. It allows MaterializationUnits to resolve and emit symbols, or abandon materialization by notifying any unmaterialized symbols of an error.

Definition at line 571 of file Core.h.

Constructor & Destructor Documentation

◆ MaterializationResponsibility()

llvm::orc::MaterializationResponsibility::MaterializationResponsibility ( MaterializationResponsibility && )

delete

◆ ~MaterializationResponsibility()

llvm::orc::MaterializationResponsibility::~MaterializationResponsibility ( )

inline

Destruct a MaterializationResponsibility instance.

In debug mode this asserts that all symbols being tracked have been either emitted or notified of an error.

Definition at line 1934 of file Core.h.

References getExecutionSession().

Member Function Documentation

◆ defineMaterializing()

Error llvm::orc::MaterializationResponsibility::defineMaterializing ( SymbolFlagsMap SymbolFlags )

inline

Attempt to claim responsibility for new definitions.

This method can be used to claim responsibility for symbols that are added to a materialization unit during the compilation process (e.g. literal pool symbols). Symbol linkage rules are the same as for symbols that are defined up front: duplicate strong definitions will result in errors. Duplicate weak definitions will be discarded (in which case they will not be added to this responsibility instance).

This method can be used by materialization units that want to add additional symbols at materialization time (e.g. stubs, compile callbacks, metadata).

Definition at line 1952 of file Core.h.

References getExecutionSession().

◆ delegate()

Expected< std::unique_ptr< MaterializationResponsibility > > llvm::orc::MaterializationResponsibility::delegate ( const SymbolNameSet & Symbols )

inline

Delegates responsibility for the given symbols to the returned materialization responsibility.

Useful for breaking up work between threads, or different kinds of materialization processes.

Definition at line 1968 of file Core.h.

References getExecutionSession().

◆ failMaterialization()

void llvm::orc::MaterializationResponsibility::failMaterialization ( )

inline

Notify all not-yet-emitted covered by this MaterializationResponsibility instance that an error has occurred.

This will remove all symbols covered by this MaterializationResponsibility from the target JITDylib, and send an error to any queries waiting on these symbols.

Definition at line 1958 of file Core.h.

References getExecutionSession().

◆ getExecutionSession()

ExecutionSession & llvm::orc::MaterializationResponsibility::getExecutionSession ( ) const

inline

Returns the ExecutionSession for this instance.

Definition at line 1800 of file Core.h.

References llvm::orc::JITDylib::getExecutionSession().

Referenced by defineMaterializing(), delegate(), failMaterialization(), getRequestedSymbols(), notifyEmitted(), notifyResolved(), replace(), and ~MaterializationResponsibility().

◆ getInitializerSymbol()

const SymbolStringPtr & llvm::orc::MaterializationResponsibility::getInitializerSymbol ( ) const

inline

Returns the initialization pseudo-symbol, if any.

This symbol will also be present in the SymbolFlagsMap for this MaterializationResponsibility object.

Definition at line 610 of file Core.h.

◆ getRequestedSymbols()

SymbolNameSet llvm::orc::MaterializationResponsibility::getRequestedSymbols ( ) const

inline

Returns the names of any symbols covered by this MaterializationResponsibility object that have queries pending.

This information can be used to return responsibility for unrequested symbols back to the JITDylib via the delegate method.

Definition at line 1938 of file Core.h.

References getExecutionSession().

◆ getResourceTracker()

const ResourceTrackerSP & llvm::orc::MaterializationResponsibility::getResourceTracker ( ) const

inline

Return the ResourceTracker associated with this instance.

Definition at line 586 of file Core.h.

◆ getSymbols()

const SymbolFlagsMap & llvm::orc::MaterializationResponsibility::getSymbols ( ) const

inline

Returns the symbol flags map for this responsibility instance.

Note: The returned flags may have transient flags (Lazy, Materializing) set. These should be stripped with JITSymbolFlags::stripTransientFlags before using.

Definition at line 605 of file Core.h.

◆ getTargetJITDylib()

JITDylib & llvm::orc::MaterializationResponsibility::getTargetJITDylib ( ) const

inline

Returns the target JITDylib that these symbols are being materialized into.

Definition at line 596 of file Core.h.

◆ notifyEmitted()

Error llvm::orc::MaterializationResponsibility::notifyEmitted ( ArrayRef< SymbolDependenceGroup > DepGroups )

inline

Notifies the target JITDylib (and any pending queries on that JITDylib) that all symbols covered by this MaterializationResponsibility instance have been emitted.

The DepGroups array describes the dependencies of symbols being emitted on symbols that are outside this MaterializationResponsibility object. Each group consists of a pair of a set of symbols and a SymbolDependenceMap that describes the dependencies for the symbols in the first set. The elements of DepGroups must be non-overlapping (no symbol should appear in more than one of hte symbol sets), but do not have to be exhaustive. Any symbol in this MaterializationResponsibility object that is not covered by an entry will be treated as having no dependencies.

This method will return an error if any symbols being resolved have been moved to the error state due to the failure of a dependency. If this method returns an error then clients should log it and call failMaterialize. If no dependencies have been registered for the symbols covered by this MaterializationResponsibility then this method is guaranteed to return Error::success() and can be wrapped with cantFail.

Definition at line 1947 of file Core.h.

References getExecutionSession().

◆ notifyResolved()

Error llvm::orc::MaterializationResponsibility::notifyResolved ( const SymbolMap & Symbols )

inline

Notifies the target JITDylib that the given symbols have been resolved.

This will update the given symbols' addresses in the JITDylib, and notify any pending queries on the given symbols of their resolution. The given symbols must be ones covered by this MaterializationResponsibility instance. Individual calls to this method may resolve a subset of the symbols, but all symbols must have been resolved prior to calling emit.

This method will return an error if any symbols being resolved have been moved to the error state due to the failure of a dependency. If this method returns an error then clients should log it and call failMaterialize. If no dependencies have been registered for the symbols covered by this MaterializationResponsibility then this method is guaranteed to return Error::success() and can be wrapped with cantFail.

Definition at line 1942 of file Core.h.

References getExecutionSession().

◆ operator=()

MaterializationResponsibility & llvm::orc::MaterializationResponsibility::operator= ( MaterializationResponsibility && )

delete

◆ replace()

Error llvm::orc::MaterializationResponsibility::replace ( std::unique_ptr< MaterializationUnit > MU )

inline

Transfers responsibility to the given MaterializationUnit for all symbols defined by that MaterializationUnit.

This allows materializers to break up work based on run-time information (e.g. by introspecting which symbols have actually been looked up and materializing only those).

Definition at line 1962 of file Core.h.

References getExecutionSession().

◆ withResourceKeyDo()

template<typename Func >

Error llvm::orc::MaterializationResponsibility::withResourceKeyDo ( Func && F ) const

inline

Runs the given callback under the session lock, passing in the associated ResourceKey.

This is the safe way to associate resources with trackers.

Definition at line 590 of file Core.h.

References F.

Referenced by llvm::orc::VTuneSupportPlugin::notifyEmitted(), llvm::orc::DebugObjectManagerPlugin::notifyEmitted(), and llvm::orc::EHFrameRegistrationPlugin::notifyEmitted().

Friends And Related Function Documentation

◆ ExecutionSession

friend class ExecutionSession

friend

Definition at line 572 of file Core.h.

◆ JITDylib

friend class JITDylib

friend

Definition at line 573 of file Core.h.

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

include/llvm/ExecutionEngine/Orc/Core.h

Public Member Functions

Friends

Detailed Description

Constructor & Destructor Documentation

◆ MaterializationResponsibility()

◆ ~MaterializationResponsibility()

Member Function Documentation

◆ defineMaterializing()

◆ delegate()

◆ failMaterialization()

◆ getExecutionSession()

◆ getInitializerSymbol()

◆ getRequestedSymbols()

◆ getResourceTracker()

◆ getSymbols()

◆ getTargetJITDylib()

◆ notifyEmitted()

◆ notifyResolved()

◆ operator=()

◆ replace()

◆ withResourceKeyDo()

Friends And Related Function Documentation

◆ ExecutionSession

◆ JITDylib