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26d9f839bc
Naively computing the hash after the PDB data has been generated is in practice as fast as other approaches I tried. I also tried online-computing the hash as parts of the PDB were written out (https://reviews.llvm.org/D51887; that's also where all the measuring data is) and computing the hash in parallel (https://reviews.llvm.org/D51957). This approach here is simplest, without being slower. Differential Revision: https://reviews.llvm.org/D51956 llvm-svn: 342333
78 lines
2.1 KiB
C++
78 lines
2.1 KiB
C++
//===- InfoStreamBuilder.h - PDB Info Stream Creation -----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_DEBUGINFO_PDB_RAW_PDBINFOSTREAMBUILDER_H
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#define LLVM_DEBUGINFO_PDB_RAW_PDBINFOSTREAMBUILDER_H
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#include "llvm/ADT/Optional.h"
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#include "llvm/Support/Error.h"
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#include "llvm/DebugInfo/PDB/Native/NamedStreamMap.h"
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#include "llvm/DebugInfo/PDB/Native/PDBFile.h"
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#include "llvm/DebugInfo/PDB/Native/RawConstants.h"
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#include "llvm/DebugInfo/PDB/PDBTypes.h"
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namespace llvm {
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class WritableBinaryStreamRef;
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namespace msf {
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class MSFBuilder;
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}
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namespace pdb {
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class PDBFile;
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class NamedStreamMap;
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class InfoStreamBuilder {
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public:
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InfoStreamBuilder(msf::MSFBuilder &Msf, NamedStreamMap &NamedStreams);
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InfoStreamBuilder(const InfoStreamBuilder &) = delete;
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InfoStreamBuilder &operator=(const InfoStreamBuilder &) = delete;
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void setVersion(PdbRaw_ImplVer V);
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void addFeature(PdbRaw_FeatureSig Sig);
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// If this is true, the PDB contents are hashed and this hash is used as
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// PDB GUID and as Signature. The age is always 1.
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void setHashPDBContentsToGUID(bool B);
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// These only have an effect if hashPDBContentsToGUID() is false.
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void setSignature(uint32_t S);
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void setAge(uint32_t A);
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void setGuid(codeview::GUID G);
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bool hashPDBContentsToGUID() const { return HashPDBContentsToGUID; }
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uint32_t getAge() const { return Age; }
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codeview::GUID getGuid() const { return Guid; }
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Optional<uint32_t> getSignature() const { return Signature; }
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uint32_t finalize();
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Error finalizeMsfLayout();
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Error commit(const msf::MSFLayout &Layout,
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WritableBinaryStreamRef Buffer) const;
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private:
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msf::MSFBuilder &Msf;
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std::vector<PdbRaw_FeatureSig> Features;
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PdbRaw_ImplVer Ver;
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uint32_t Age;
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Optional<uint32_t> Signature;
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codeview::GUID Guid;
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bool HashPDBContentsToGUID = false;
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NamedStreamMap &NamedStreams;
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};
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}
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}
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#endif
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