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2b6bd7aaf5
Summary: As discussed in http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20141027/242445.html, the creation of reader and writer instances is better done using ErrorOr. There are no functional changes, but several callers needed to be adjusted. Reviewers: bogner Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D6076 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221120 91177308-0d34-0410-b5e6-96231b3b80d8
111 lines
3.5 KiB
C++
111 lines
3.5 KiB
C++
//===- SampleProfWriter.h - Write LLVM sample profile data ----------------===//
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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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//
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// This file contains definitions needed for writing sample profiles.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_PROFILEDATA_SAMPLEPROFWRITER_H
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#define LLVM_PROFILEDATA_SAMPLEPROFWRITER_H
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#include "llvm/ADT/StringRef.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/Module.h"
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#include "llvm/ProfileData/SampleProf.h"
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#include "llvm/Support/ErrorOr.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/raw_ostream.h"
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namespace llvm {
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namespace sampleprof {
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enum SampleProfileFormat { SPF_None = 0, SPF_Text, SPF_Binary, SPF_GCC };
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/// \brief Sample-based profile writer. Base class.
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class SampleProfileWriter {
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public:
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SampleProfileWriter(StringRef Filename, std::error_code &EC,
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sys::fs::OpenFlags Flags)
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: OS(Filename, EC, Flags) {}
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virtual ~SampleProfileWriter() {}
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/// \brief Write sample profiles in \p S for function \p FName.
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///
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/// \returns true if the file was updated successfully. False, otherwise.
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virtual bool write(StringRef FName, const FunctionSamples &S) = 0;
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/// \brief Write sample profiles in \p S for function \p F.
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bool write(const Function &F, const FunctionSamples &S) {
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return write(F.getName(), S);
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}
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/// \brief Write all the sample profiles for all the functions in \p M.
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///
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/// \returns true if the file was updated successfully. False, otherwise.
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bool write(const Module &M, StringMap<FunctionSamples> &P) {
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for (const auto &F : M) {
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StringRef Name = F.getName();
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if (!write(Name, P[Name]))
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return false;
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}
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return true;
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}
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/// \brief Write all the sample profiles in the given map of samples.
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///
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/// \returns true if the file was updated successfully. False, otherwise.
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bool write(StringMap<FunctionSamples> &ProfileMap) {
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for (auto &I : ProfileMap) {
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StringRef FName = I.first();
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FunctionSamples &Profile = I.second;
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if (!write(FName, Profile))
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return false;
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}
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return true;
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}
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/// \brief Profile writer factory. Create a new writer based on the value of
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/// \p Format.
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static ErrorOr<std::unique_ptr<SampleProfileWriter>>
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create(StringRef Filename, SampleProfileFormat Format);
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protected:
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/// \brief Output stream where to emit the profile to.
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raw_fd_ostream OS;
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};
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/// \brief Sample-based profile writer (text format).
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class SampleProfileWriterText : public SampleProfileWriter {
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public:
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SampleProfileWriterText(StringRef F, std::error_code &EC)
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: SampleProfileWriter(F, EC, sys::fs::F_Text) {}
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bool write(StringRef FName, const FunctionSamples &S) override;
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bool write(const Module &M, StringMap<FunctionSamples> &P) {
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return SampleProfileWriter::write(M, P);
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}
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};
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/// \brief Sample-based profile writer (binary format).
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class SampleProfileWriterBinary : public SampleProfileWriter {
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public:
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SampleProfileWriterBinary(StringRef F, std::error_code &EC);
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bool write(StringRef F, const FunctionSamples &S) override;
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bool write(const Module &M, StringMap<FunctionSamples> &P) {
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return SampleProfileWriter::write(M, P);
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}
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};
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} // End namespace sampleprof
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} // End namespace llvm
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#endif // LLVM_PROFILEDATA_SAMPLEPROFWRITER_H
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