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b03521b98d
Add support for generating a dsymutil reproducer. The result is a folder containing all the object files for linking. When --gen-reproducer is passed, dsymutil uses a FileCollectorFileSystem which keeps track of all the files used by dsymutil. These files are copied into a temporary directory when dsymutil exists. When this path is passed to --use-reproducer, dsymutil uses a RedirectingFileSystem that will use the files from the reproducer directory instead of the actual paths. This means you don't need to mess with the OSO path prefix. Differential revision: https://reviews.llvm.org/D79398
78 lines
2.2 KiB
C++
78 lines
2.2 KiB
C++
//===- tools/dsymutil/Reproducer.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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#ifndef LLVM_TOOLS_DSYMUTIL_REPRODUCER_H
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#define LLVM_TOOLS_DSYMUTIL_REPRODUCER_H
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#include "llvm/Support/Error.h"
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#include "llvm/Support/FileCollector.h"
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#include "llvm/Support/VirtualFileSystem.h"
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namespace llvm {
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namespace dsymutil {
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/// The reproducer mode.
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enum class ReproducerMode {
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Generate,
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Use,
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Off,
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};
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/// The reproducer class manages the sate related to reproducers in dsymutil.
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/// Instances should be created with Reproducer::createReproducer. An instance
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/// of this class is returned when reproducers are off. The VFS returned by
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/// this instance is the real file system.
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class Reproducer {
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public:
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Reproducer();
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virtual ~Reproducer();
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IntrusiveRefCntPtr<vfs::FileSystem> getVFS() const { return VFS; }
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/// Create a Reproducer instance based on the given mode.
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static llvm::Expected<std::unique_ptr<Reproducer>>
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createReproducer(ReproducerMode Mode, StringRef Root);
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protected:
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IntrusiveRefCntPtr<vfs::FileSystem> VFS;
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};
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/// Reproducer instance used to generate a new reproducer. The VFS returned by
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/// this instance is a FileCollectorFileSystem that tracks every file used by
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/// dsymutil.
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class ReproducerGenerate : public Reproducer {
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public:
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ReproducerGenerate(std::error_code &EC);
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~ReproducerGenerate() override;
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private:
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/// The path to the reproducer.
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std::string Root;
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/// The FileCollector used by the FileCollectorFileSystem.
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std::shared_ptr<FileCollector> FC;
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};
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/// Reproducer instance used to use an existing reproducer. The VFS returned by
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/// this instance is a RedirectingFileSystem that remaps paths to their
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/// counterpart in the reproducer.
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class ReproducerUse : public Reproducer {
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public:
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ReproducerUse(StringRef Root, std::error_code &EC);
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~ReproducerUse() override;
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private:
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/// The path to the reproducer.
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std::string Root;
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};
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} // end namespace dsymutil
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} // end namespace llvm
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#endif // LLVM_TOOLS_DSYMUTIL_REPRODUCER_H
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