MemoryBuffer &operator=(const MemoryBuffer &); // DO NOT IMPLEMENT
protected:
MemoryBuffer() {}
- void init(const char *BufStart, const char *BufEnd);
+ void init(const char *BufStart, const char *BufEnd,
+ bool RequiresNullTerminator);
public:
virtual ~MemoryBuffer();
/// specified, this means that the client knows that the file exists and that
/// it has the specified size.
static error_code getFile(StringRef Filename, OwningPtr<MemoryBuffer> &result,
- int64_t FileSize = -1);
+ int64_t FileSize = -1,
+ bool RequiresNullTerminator = true);
static error_code getFile(const char *Filename,
OwningPtr<MemoryBuffer> &result,
- int64_t FileSize = -1);
+ int64_t FileSize = -1,
+ bool RequiresNullTerminator = true);
/// getOpenFile - Given an already-open file descriptor, read the file and
- /// return a MemoryBuffer. This takes ownership of the descriptor,
- /// immediately closing it after reading the file.
+ /// return a MemoryBuffer.
static error_code getOpenFile(int FD, const char *Filename,
OwningPtr<MemoryBuffer> &result,
- int64_t FileSize = -1);
+ uint64_t FileSize = -1,
+ uint64_t MapSize = -1,
+ int64_t Offset = 0,
+ bool RequiresNullTerminator = true);
/// getMemBuffer - Open the specified memory range as a MemoryBuffer. Note
- /// that InputData must be null terminated.
+ /// that InputData must be null terminated if RequiresNullTerminator is true.
static MemoryBuffer *getMemBuffer(StringRef InputData,
- StringRef BufferName = "");
+ StringRef BufferName = "",
+ bool RequiresNullTerminator = true);
/// getMemBufferCopy - Open the specified memory range as a MemoryBuffer,
/// copying the contents and taking ownership of it. InputData does not
static error_code getFileOrSTDIN(const char *Filename,
OwningPtr<MemoryBuffer> &result,
int64_t FileSize = -1);
+
+
+ //===--------------------------------------------------------------------===//
+ // Provided for performance analysis.
+ //===--------------------------------------------------------------------===//
+
+ /// The kind of memory backing used to support the MemoryBuffer.
+ enum BufferKind {
+ MemoryBuffer_Malloc,
+ MemoryBuffer_MMap
+ };
+
+ /// Return information on the memory mechanism used to support the
+ /// MemoryBuffer.
+ virtual BufferKind getBufferKind() const = 0;
};
} // end namespace llvm