llvm::orc::NonOwningSymbolStringPtr Class Reference

Non-owning SymbolStringPool entry pointer. More...

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

Inheritance diagram for llvm::orc::NonOwningSymbolStringPtr:

Public Member Functions
	NonOwningSymbolStringPtr ()=default
	NonOwningSymbolStringPtr (const SymbolStringPtr &S)
Public Member Functions inherited from llvm::orc::SymbolStringPtrBase
	SymbolStringPtrBase ()=default
	SymbolStringPtrBase (std::nullptr_t)
	operator bool () const
StringRef	operator* () const
bool	poolEntryIsAlive () const

Friends
struct	DenseMapInfo< orc::NonOwningSymbolStringPtr >

Additional Inherited Members
Protected Types inherited from llvm::orc::SymbolStringPtrBase
using	PoolEntry = SymbolStringPool::PoolMapEntry
using	PoolEntryPtr = PoolEntry *
Protected Member Functions inherited from llvm::orc::SymbolStringPtrBase
	SymbolStringPtrBase (PoolEntryPtr S)
size_t	getRefCount () const
Static Protected Member Functions inherited from llvm::orc::SymbolStringPtrBase
static bool	isRealPoolEntry (PoolEntryPtr P)
Protected Attributes inherited from llvm::orc::SymbolStringPtrBase
PoolEntryPtr	S = nullptr
Static Protected Attributes inherited from llvm::orc::SymbolStringPtrBase
static constexpr uintptr_t	EmptyBitPattern
static constexpr uintptr_t	TombstoneBitPattern
static constexpr uintptr_t	InvalidPtrMask

Detailed Description

Non-owning SymbolStringPool entry pointer.

Instances are comparable with SymbolStringPtr instances and guaranteed to have the same hash, but do not affect the ref-count of the pooled string (and are therefore cheaper to copy).

NonOwningSymbolStringPtrs are silently invalidated if the pool entry's ref-count drops to zero, so they should only be used in contexts where a corresponding SymbolStringPtr is known to exist (which will guarantee that the ref-count stays above zero). E.g. in a graph where nodes are represented by SymbolStringPtrs the edges can be represented by pairs of NonOwningSymbolStringPtrs and this will make the introduction of deletion of edges cheaper.

Definition at line 251 of file SymbolStringPool.h.

Constructor & Destructor Documentation

NonOwningSymbolStringPtr() [1/2]

llvm::orc::NonOwningSymbolStringPtr::NonOwningSymbolStringPtr ( )

default

References NonOwningSymbolStringPtr().

Referenced by NonOwningSymbolStringPtr(), and NonOwningSymbolStringPtr().

NonOwningSymbolStringPtr() [2/2]

llvm::orc::NonOwningSymbolStringPtr::NonOwningSymbolStringPtr ( const SymbolStringPtr & S )

inlineexplicit

Definition at line 256 of file SymbolStringPool.h.

References NonOwningSymbolStringPtr(), and llvm::orc::SymbolStringPtrBase::SymbolStringPtrBase().

Friends And Related Symbol Documentation

DenseMapInfo< orc::NonOwningSymbolStringPtr >

friend struct DenseMapInfo< orc::NonOwningSymbolStringPtr >

friend

Definition at line 236 of file SymbolStringPool.h.

References E().

---

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

• include/llvm/ExecutionEngine/Orc/SymbolStringPool.h