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//===- SampleProfWriter.h - Write LLVM sample profile data ----------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains definitions needed for writing sample profiles.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_PROFILEDATA_SAMPLEPROFWRITER_H
#define LLVM_PROFILEDATA_SAMPLEPROFWRITER_H
#include "llvm/ADT/StringRef.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/Module.h"
#include "llvm/ProfileData/SampleProf.h"
#include "llvm/Support/ErrorOr.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/raw_ostream.h"
namespace llvm {
namespace sampleprof {
enum SampleProfileFormat { SPF_None = 0, SPF_Text, SPF_Binary, SPF_GCC };
/// \brief Sample-based profile writer. Base class.
class SampleProfileWriter {
public:
SampleProfileWriter(StringRef Filename, std::error_code &EC,
sys::fs::OpenFlags Flags)
: OS(Filename, EC, Flags) {}
virtual ~SampleProfileWriter() {}
/// \brief Write sample profiles in \p S for function \p FName.
///
/// \returns true if the file was updated successfully. False, otherwise.
virtual bool write(StringRef FName, const FunctionSamples &S) = 0;
/// \brief Write sample profiles in \p S for function \p F.
bool write(const Function &F, const FunctionSamples &S) {
return write(F.getName(), S);
}
/// \brief Write all the sample profiles for all the functions in \p M.
///
/// \returns true if the file was updated successfully. False, otherwise.
bool write(const Module &M, StringMap<FunctionSamples> &P) {
for (const auto &F : M) {
StringRef Name = F.getName();
if (!write(Name, P[Name]))
return false;
}
return true;
}
/// \brief Write all the sample profiles in the given map of samples.
///
/// \returns true if the file was updated successfully. False, otherwise.
bool write(StringMap<FunctionSamples> &ProfileMap) {
for (auto &I : ProfileMap) {
StringRef FName = I.first();
FunctionSamples &Profile = I.second;
if (!write(FName, Profile))
return false;
}
return true;
}
/// \brief Profile writer factory. Create a new writer based on the value of
/// \p Format.
static ErrorOr<std::unique_ptr<SampleProfileWriter>>
create(StringRef Filename, SampleProfileFormat Format);
protected:
/// \brief Output stream where to emit the profile to.
raw_fd_ostream OS;
};
/// \brief Sample-based profile writer (text format).
class SampleProfileWriterText : public SampleProfileWriter {
public:
SampleProfileWriterText(StringRef F, std::error_code &EC)
: SampleProfileWriter(F, EC, sys::fs::F_Text) {}
bool write(StringRef FName, const FunctionSamples &S) override;
bool write(const Module &M, StringMap<FunctionSamples> &P) {
return SampleProfileWriter::write(M, P);
}
};
/// \brief Sample-based profile writer (binary format).
class SampleProfileWriterBinary : public SampleProfileWriter {
public:
SampleProfileWriterBinary(StringRef F, std::error_code &EC);
bool write(StringRef F, const FunctionSamples &S) override;
bool write(const Module &M, StringMap<FunctionSamples> &P) {
return SampleProfileWriter::write(M, P);
}
};
} // End namespace sampleprof
} // End namespace llvm
#endif // LLVM_PROFILEDATA_SAMPLEPROFWRITER_H
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