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-rw-r--r--include/llvm/ExecutionEngine/ObjectBuffer.h76
1 files changed, 0 insertions, 76 deletions
diff --git a/include/llvm/ExecutionEngine/ObjectBuffer.h b/include/llvm/ExecutionEngine/ObjectBuffer.h
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--- a/include/llvm/ExecutionEngine/ObjectBuffer.h
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-//===---- ObjectBuffer.h - Utility class to wrap object image memory -----===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file declares a wrapper class to hold the memory into which an
-// object will be generated.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_EXECUTIONENGINE_OBJECTBUFFER_H
-#define LLVM_EXECUTIONENGINE_OBJECTBUFFER_H
-
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/raw_ostream.h"
-
-namespace llvm {
-
-/// This class acts as a container for the memory buffer used during generation
-/// and loading of executable objects using MCJIT and RuntimeDyld. The
-/// underlying memory for the object will be owned by the ObjectBuffer instance
-/// throughout its lifetime.
-class ObjectBuffer {
- virtual void anchor();
-public:
- ObjectBuffer() {}
- ObjectBuffer(std::unique_ptr<MemoryBuffer> Buf) : Buffer(std::move(Buf)) {}
- virtual ~ObjectBuffer() {}
-
- MemoryBufferRef getMemBuffer() const { return Buffer->getMemBufferRef(); }
-
- const char *getBufferStart() const { return Buffer->getBufferStart(); }
- size_t getBufferSize() const { return Buffer->getBufferSize(); }
- StringRef getBuffer() const { return Buffer->getBuffer(); }
- StringRef getBufferIdentifier() const {
- return Buffer->getBufferIdentifier();
- }
-
-protected:
- // The memory contained in an ObjectBuffer
- std::unique_ptr<MemoryBuffer> Buffer;
-};
-
-/// This class encapsulates the SmallVector and raw_svector_ostream needed to
-/// generate an object using MC code emission while providing a common
-/// ObjectBuffer interface for access to the memory once the object has been
-/// generated.
-class ObjectBufferStream : public ObjectBuffer {
- void anchor() override;
-public:
- ObjectBufferStream() : OS(SV) {}
- virtual ~ObjectBufferStream() {}
-
- raw_ostream &getOStream() { return OS; }
- void flush()
- {
- OS.flush();
-
- // Make the data accessible via the ObjectBuffer::Buffer
- Buffer =
- MemoryBuffer::getMemBuffer(StringRef(SV.data(), SV.size()), "", false);
- }
-
-protected:
- SmallVector<char, 4096> SV; // Working buffer into which we JIT.
- raw_svector_ostream OS; // streaming wrapper
-};
-
-} // namespace llvm
-
-#endif