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// Copyright (C) 2006 Google Inc.
//
// 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.
// SourceLineResolver returns function/file/line info for a memory address.
// It uses address map files produced by a compatible writer, e.g.
// PDBSourceLineWriter.
#ifndef _SOURCE_LINE_RESOLVER_H__
#define _SOURCE_LINE_RESOLVER_H__
#include "config.h"
#include <string>
#include <ext/hash_map>
_START_GOOGLE_NAMESPACE_
using STL_NAMESPACE::string;
using __gnu_cxx::hash_map;
class SourceLineResolver {
public:
typedef unsigned long long MemAddr;
// A struct that gives source file information for a memory address.
struct SourceLineInfo {
// Resets all fields to their default empty values
void Reset();
// The function name, for example Foo::Foo()
string function_name;
// The source file, for example C:\foo\bar.cc
string source_file;
// The line number within the source file (1-based)
int source_line;
};
SourceLineResolver();
~SourceLineResolver();
// Adds a module to this resolver, returning true on success.
//
// module_name may be an arbitrary string. Typically, it will be the
// filename of the module, optionally with version identifiers.
//
// map_file should contain line/address mappings for this module.
bool LoadModule(const string &module_name, const string &map_file);
// Determines the source line for the given address, and fills info
// with the result. module_name must match a module name that was
// passed to LoadModule(). The address should be module-relative.
void LookupAddress(MemAddr address, const string &module_name,
SourceLineInfo *info) const;
private:
template<class T> class MemAddrMap;
struct Line;
struct Function;
struct File;
struct HashString {
size_t operator()(const string &s) const;
};
class Module;
// All of the modules we've loaded
typedef hash_map<string, Module*, HashString> ModuleMap;
ModuleMap *modules_;
// Disallow unwanted copy ctor and assignment operator
SourceLineResolver(const SourceLineResolver&);
void operator=(const SourceLineResolver&);
};
_END_GOOGLE_NAMESPACE_
#endif // _SOLURCE_LINE_RESOLVER_H__
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