ClickHouse/dbms/src/Common/SymbolIndex.h

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#pragma once
#include <vector>
#include <string>
namespace DB
{
/** Allow to quickly find symbol name from address.
* Used as a replacement for "dladdr" function which is extremely slow.
*/
class SymbolIndex
{
public:
struct Symbol
{
const void * address_begin;
const void * address_end;
const char * object;
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std::string name; /// demangled NOTE Can use Arena for strings
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};
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struct Object
{
const void * address_begin;
const void * address_end;
std::string name;
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};
SymbolIndex() { update(); }
void update();
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const Symbol * findSymbol(const void * address) const;
const Object * findObject(const void * address) const;
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const std::vector<Symbol> & symbols() const { return data.symbols; }
const std::vector<Object> & objects() const { return data.objects; }
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struct Data
{
std::vector<Symbol> symbols;
std::vector<Object> objects;
};
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private:
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Data data;
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};
}