SmallVector-backed MemoryBuffer instance. More...

#include "llvm/Support/SmallVectorMemoryBuffer.h"

Inheritance diagram for llvm::SmallVectorMemoryBuffer:

Collaboration diagram for llvm::SmallVectorMemoryBuffer:

Public Member Functions
	SmallVectorMemoryBuffer (SmallVectorImpl< char > &&SV)
	Construct an SmallVectorMemoryBuffer from the given SmallVector r-value. More...

	SmallVectorMemoryBuffer (SmallVectorImpl< char > &&SV, StringRef Name)
	Construct a named SmallVectorMemoryBuffer from the given SmallVector r-value and StringRef. More...

	~SmallVectorMemoryBuffer () override

StringRef	getBufferIdentifier () const override
	Return an identifier for this buffer, typically the filename it was read from. More...

BufferKind	getBufferKind () const override
	Return information on the memory mechanism used to support the MemoryBuffer. More...

Public Member Functions inherited from llvm::MemoryBuffer
	MemoryBuffer (const MemoryBuffer &)=delete

MemoryBuffer &	operator= (const MemoryBuffer &)=delete

virtual	~MemoryBuffer ()

const char *	getBufferStart () const

const char *	getBufferEnd () const

size_t	getBufferSize () const

StringRef	getBuffer () const

MemoryBufferRef	getMemBufferRef () const

Additional Inherited Members
Public Types inherited from llvm::MemoryBuffer
enum	BufferKind { MemoryBuffer_Malloc, MemoryBuffer_MMap }
	The kind of memory backing used to support the MemoryBuffer. More...

Static Public Member Functions inherited from llvm::MemoryBuffer
static ErrorOr< std::unique_ptr< MemoryBuffer > >	getFile (const Twine &Filename, int64_t FileSize=-1, bool RequiresNullTerminator=true, bool IsVolatile=false)
	Open the specified file as a MemoryBuffer, returning a new MemoryBuffer if successful, otherwise returning null. More...

static ErrorOr< std::unique_ptr< MemoryBuffer > >	getFileAsStream (const Twine &Filename)
	Read all of the specified file into a MemoryBuffer as a stream (i.e. More...

static ErrorOr< std::unique_ptr< MemoryBuffer > >	getOpenFileSlice (int FD, const Twine &Filename, uint64_t MapSize, int64_t Offset, bool IsVolatile=false)
	Given an already-open file descriptor, map some slice of it into a MemoryBuffer. More...

static ErrorOr< std::unique_ptr< MemoryBuffer > >	getOpenFile (int FD, const Twine &Filename, uint64_t FileSize, bool RequiresNullTerminator=true, bool IsVolatile=false)
	Given an already-open file descriptor, read the file and return a MemoryBuffer. More...

static std::unique_ptr< MemoryBuffer >	getMemBuffer (StringRef InputData, StringRef BufferName="", bool RequiresNullTerminator=true)
	Open the specified memory range as a MemoryBuffer. More...

static std::unique_ptr< MemoryBuffer >	getMemBuffer (MemoryBufferRef Ref, bool RequiresNullTerminator=true)

static std::unique_ptr< MemoryBuffer >	getMemBufferCopy (StringRef InputData, const Twine &BufferName="")
	Open the specified memory range as a MemoryBuffer, copying the contents and taking ownership of it. More...

static ErrorOr< std::unique_ptr< MemoryBuffer > >	getSTDIN ()
	Read all of stdin into a file buffer, and return it. More...

static ErrorOr< std::unique_ptr< MemoryBuffer > >	getFileOrSTDIN (const Twine &Filename, int64_t FileSize=-1, bool RequiresNullTerminator=true)
	Open the specified file as a MemoryBuffer, or open stdin if the Filename is "-". More...

static ErrorOr< std::unique_ptr< MemoryBuffer > >	getFileSlice (const Twine &Filename, uint64_t MapSize, uint64_t Offset, bool IsVolatile=false)
	Map a subrange of the specified file as a MemoryBuffer. More...

Protected Member Functions inherited from llvm::MemoryBuffer
	MemoryBuffer ()=default

void	init (const char BufStart, const char BufEnd, bool RequiresNullTerminator)
	init - Initialize this MemoryBuffer as a reference to externally allocated memory, memory that we know is already null terminated. More...

Static Protected Attributes inherited from llvm::MemoryBuffer
static constexpr sys::fs::mapped_file_region::mapmode	Mapmode

Detailed Description

SmallVector-backed MemoryBuffer instance.

This class enables efficient construction of MemoryBuffers from SmallVector instances. This is useful for MCJIT and Orc, where object files are streamed into SmallVectors, then inspected using ObjectFile (which takes a MemoryBuffer).

Definition at line 30 of file SmallVectorMemoryBuffer.h.

Constructor & Destructor Documentation

◆ SmallVectorMemoryBuffer() [1/2]

llvm::SmallVectorMemoryBuffer::SmallVectorMemoryBuffer ( SmallVectorImpl< char > && SV )

inline

Construct an SmallVectorMemoryBuffer from the given SmallVector r-value.

FIXME: It'd be nice for this to be a non-templated constructor taking a SmallVectorImpl here instead of a templated one taking a SmallVector<N>, but SmallVector's move-construction/assignment currently only take SmallVectors. If/when that is fixed we can simplify this constructor and the following one.

Definition at line 40 of file SmallVectorMemoryBuffer.h.

References llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::SmallVectorTemplateCommon< T, typename >::end(), and llvm::MemoryBuffer::init().