diff options
Diffstat (limited to 'include/llvm/Support/MemoryBuffer.h')
| -rw-r--r-- | include/llvm/Support/MemoryBuffer.h | 32 |
1 files changed, 27 insertions, 5 deletions
diff --git a/include/llvm/Support/MemoryBuffer.h b/include/llvm/Support/MemoryBuffer.h index b6243b7b10dde..d912e86c8b4e2 100644 --- a/include/llvm/Support/MemoryBuffer.h +++ b/include/llvm/Support/MemoryBuffer.h @@ -40,7 +40,8 @@ class MemoryBuffer { 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(); @@ -63,21 +64,27 @@ public: /// 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. static error_code getOpenFile(int FD, const char *Filename, OwningPtr<MemoryBuffer> &result, - int64_t FileSize = -1); + size_t FileSize = -1, + size_t MapSize = -1, + off_t Offset = 0, + bool RequiresNullTerminator = true); /// getMemBuffer - Open the specified memory range as a MemoryBuffer. Note /// that InputData must be null terminated. 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 @@ -112,6 +119,21 @@ public: 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 |