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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
66 lines
2.3 KiB
C++
66 lines
2.3 KiB
C++
//===- SmallVectorMemoryBuffer.h --------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file declares a wrapper class to hold the memory into which an
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// object will be generated.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_EXECUTIONENGINE_OBJECTMEMORYBUFFER_H
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#define LLVM_EXECUTIONENGINE_OBJECTMEMORYBUFFER_H
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/raw_ostream.h"
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namespace llvm {
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/// SmallVector-backed MemoryBuffer instance.
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///
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/// This class enables efficient construction of MemoryBuffers from SmallVector
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/// instances. This is useful for MCJIT and Orc, where object files are streamed
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/// into SmallVectors, then inspected using ObjectFile (which takes a
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/// MemoryBuffer).
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class SmallVectorMemoryBuffer : public MemoryBuffer {
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public:
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/// Construct an SmallVectorMemoryBuffer from the given SmallVector
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/// r-value.
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///
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/// FIXME: It'd be nice for this to be a non-templated constructor taking a
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/// SmallVectorImpl here instead of a templated one taking a SmallVector<N>,
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/// but SmallVector's move-construction/assignment currently only take
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/// SmallVectors. If/when that is fixed we can simplify this constructor and
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/// the following one.
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SmallVectorMemoryBuffer(SmallVectorImpl<char> &&SV)
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: SV(std::move(SV)), BufferName("<in-memory object>") {
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init(this->SV.begin(), this->SV.end(), false);
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}
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/// Construct a named SmallVectorMemoryBuffer from the given
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/// SmallVector r-value and StringRef.
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SmallVectorMemoryBuffer(SmallVectorImpl<char> &&SV, StringRef Name)
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: SV(std::move(SV)), BufferName(Name) {
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init(this->SV.begin(), this->SV.end(), false);
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}
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// Key function.
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~SmallVectorMemoryBuffer() override;
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StringRef getBufferIdentifier() const override { return BufferName; }
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BufferKind getBufferKind() const override { return MemoryBuffer_Malloc; }
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private:
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SmallVector<char, 0> SV;
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std::string BufferName;
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};
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} // namespace llvm
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#endif
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