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// Copyright 2014 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Read profile from the .afdo file. The format of .afdo file is in
// profile_writer.h.
#ifndef AUTOFDO_PROFILE_READER_H_
#define AUTOFDO_PROFILE_READER_H_
#include <string>
#include <vector>
#include "module_grouper.h"
#include "symbol_map.h"
namespace autofdo {
class SymbolMap;
class AutoFDOProfileReader {
public:
// None of the args are owned by this class.
explicit AutoFDOProfileReader(SymbolMap *symbol_map, ModuleMap *module_map,
bool force_update)
: symbol_map_(symbol_map),
module_map_(module_map),
force_update_(force_update) {}
explicit AutoFDOProfileReader()
: symbol_map_(NULL), module_map_(NULL), force_update_(false) {}
void ReadFromFile(const string &output_file);
private:
void ReadWorkingSet();
void ReadModuleGroup();
void ReadFunctionProfile();
// Reads in profile recursively. Updates the symbol_map_ if update or
// force_update_ is true. Otherwise just read in and dump the data.
// The reason we need "update" is because during profile_update, we first
// read in symbol_map from the binary, which includes the alias info. Then
// when we read in profiles from profile, we don't want to update the
// profiles for the aliased symbols as they all point to the same symbol.
// With force_update_==true, we know that the ReadSymbolProfile request is
// not from profile_update but tools like profile_merger and profile_dump,
// where symbol_map was built purely from profile thus alias symbol info
// is not available. In that case, we should always update the symbol.
void ReadSymbolProfile(const SourceStack &stack, bool update);
void ReadNameTable();
SymbolMap *symbol_map_;
ModuleMap *module_map_;
bool force_update_;
std::vector<string> names_;
};
} // namespace autofdo
#endif // AUTOFDO_PROFILE_READER_H_
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