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//===- InfoStream.h - PDB Info Stream (Stream 1) Access ---------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_DEBUGINFO_PDB_RAW_PDBINFOSTREAM_H
#define LLVM_DEBUGINFO_PDB_RAW_PDBINFOSTREAM_H
#include "llvm/ADT/StringMap.h"
#include "llvm/DebugInfo/PDB/PDBTypes.h"
#include "llvm/DebugInfo/PDB/Raw/MappedBlockStream.h"
#include "llvm/DebugInfo/PDB/Raw/NameMap.h"
#include "llvm/DebugInfo/PDB/Raw/RawConstants.h"
#include "llvm/Support/Endian.h"
#include "llvm/Support/Error.h"
namespace llvm {
namespace pdb {
class InfoStreamBuilder;
class PDBFile;
class InfoStream {
friend class InfoStreamBuilder;
struct HeaderInfo {
support::ulittle32_t Version;
support::ulittle32_t Signature;
support::ulittle32_t Age;
PDB_UniqueId Guid;
};
public:
InfoStream(std::unique_ptr<MappedBlockStream> Stream);
Error reload();
Error commit();
PdbRaw_ImplVer getVersion() const;
uint32_t getSignature() const;
uint32_t getAge() const;
PDB_UniqueId getGuid() const;
uint32_t getNamedStreamIndex(llvm::StringRef Name) const;
iterator_range<StringMapConstIterator<uint32_t>> named_streams() const;
private:
std::unique_ptr<MappedBlockStream> Stream;
// PDB file format version. We only support VC70. See the enumeration
// `PdbRaw_ImplVer` for the other possible values.
uint32_t Version;
// A 32-bit signature unique across all PDBs. This is generated with
// a call to time() when the PDB is written, but obviously this is not
// universally unique.
uint32_t Signature;
// The number of times the PDB has been written. Might also be used to
// ensure that the PDB matches the executable.
uint32_t Age;
// Due to the aforementioned limitations with `Signature`, this is a new
// signature present on VC70 and higher PDBs which is guaranteed to be
// universally unique.
PDB_UniqueId Guid;
NameMap NamedStreams;
};
}
}
#endif
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