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synced 2024-09-21 01:00:48 +00:00
Added one more function for introspection
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parent
97ac56139b
commit
256e260693
@ -240,8 +240,10 @@ std::string StackTrace::toStringImpl(const Frames & frames, size_t size)
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for (size_t i = 0; i < size; ++i)
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{
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out << "#" << i << " " << frames[i] << " ";
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auto symbol = symbol_index.findSymbol(frames[i]);
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const void * addr = frames[i];
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out << "#" << i << " " << addr << " ";
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auto symbol = symbol_index.findSymbol(addr);
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if (symbol)
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{
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int status = 0;
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@ -252,14 +254,14 @@ std::string StackTrace::toStringImpl(const Frames & frames, size_t size)
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out << " ";
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if (auto object = symbol_index.findObject(frames[i]))
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if (auto object = symbol_index.findObject(addr))
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{
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if (std::filesystem::exists(object->name))
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{
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auto dwarf_it = dwarfs.try_emplace(object->name, *object->elf).first;
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DB::Dwarf::LocationInfo location;
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if (dwarf_it->second.findAddress(uintptr_t(object->address_begin) + uintptr_t(frames[i]), location, DB::Dwarf::LocationInfoMode::FAST))
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if (dwarf_it->second.findAddress(uintptr_t(addr) - uintptr_t(object->address_begin), location, DB::Dwarf::LocationInfoMode::FAST))
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out << location.file.toString() << ":" << location.line;
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else
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out << object->name;
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146
dbms/src/Functions/addressToLine.cpp
Normal file
146
dbms/src/Functions/addressToLine.cpp
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@ -0,0 +1,146 @@
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#include <Common/Elf.h>
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#include <Common/Dwarf.h>
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#include <Common/SymbolIndex.h>
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#include <Common/HashTable/HashMap.h>
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#include <Common/Arena.h>
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#include <Columns/ColumnString.h>
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#include <Columns/ColumnsNumber.h>
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#include <DataTypes/DataTypeString.h>
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#include <Functions/IFunction.h>
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#include <Functions/FunctionHelpers.h>
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#include <Functions/FunctionFactory.h>
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#include <IO/WriteBufferFromArena.h>
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#include <IO/WriteHelpers.h>
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#include <mutex>
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#include <filesystem>
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#include <unordered_map>
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int ILLEGAL_COLUMN;
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extern const int ILLEGAL_TYPE_OF_ARGUMENT;
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extern const int NUMBER_OF_ARGUMENTS_DOESNT_MATCH;
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}
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class FunctionAddressToLine : public IFunction
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{
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public:
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static constexpr auto name = "addressToLine";
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static FunctionPtr create(const Context &)
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{
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return std::make_shared<FunctionAddressToLine>();
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}
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String getName() const override
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{
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return name;
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}
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size_t getNumberOfArguments() const override
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{
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return 1;
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}
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DataTypePtr getReturnTypeImpl(const ColumnsWithTypeAndName & arguments) const override
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{
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if (arguments.size() != 1)
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throw Exception("Function " + getName() + " needs exactly one argument; passed "
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+ toString(arguments.size()) + ".", ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
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const auto & type = arguments[0].type;
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if (!WhichDataType(type.get()).isUInt64())
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throw Exception("The only argument for function " + getName() + " must be UInt64. Found "
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+ type->getName() + " instead.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
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return std::make_shared<DataTypeString>();
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}
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bool useDefaultImplementationForConstants() const override
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{
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return true;
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}
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void executeImpl(Block & block, const ColumnNumbers & arguments, size_t result, size_t input_rows_count) override
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{
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const ColumnPtr & column = block.getByPosition(arguments[0]).column;
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const ColumnUInt64 * column_concrete = checkAndGetColumn<ColumnUInt64>(column.get());
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if (!column_concrete)
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throw Exception("Illegal column " + column->getName() + " of argument of function " + getName(), ErrorCodes::ILLEGAL_COLUMN);
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const typename ColumnVector<UInt64>::Container & data = column_concrete->getData();
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auto result_column = ColumnString::create();
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for (size_t i = 0; i < input_rows_count; ++i)
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{
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StringRef res_str = implCached(data[i]);
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result_column->insertData(res_str.data, res_str.size);
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}
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block.getByPosition(result).column = std::move(result_column);
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}
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private:
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std::mutex mutex;
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Arena arena;
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using Map = HashMap<uintptr_t, StringRef>;
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Map map;
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std::unordered_map<std::string, Dwarf> dwarfs;
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StringRef impl(uintptr_t addr)
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{
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const SymbolIndex & symbol_index = SymbolIndex::instance();
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if (auto object = symbol_index.findObject(reinterpret_cast<const void *>(addr)))
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{
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auto dwarf_it = dwarfs.try_emplace(object->name, *object->elf).first;
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if (!std::filesystem::exists(object->name))
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return {};
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Dwarf::LocationInfo location;
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if (dwarf_it->second.findAddress(addr - uintptr_t(object->address_begin), location, Dwarf::LocationInfoMode::FAST))
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{
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const char * arena_begin = nullptr;
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WriteBufferFromArena out(arena, arena_begin);
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writeString(location.file.toString(), out);
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writeChar(':', out);
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writeIntText(location.line, out);
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StringRef out_str = out.finish();
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out_str.data = arena.insert(out_str.data, out_str.size);
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return out_str;
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}
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else
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{
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return object->name;
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}
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}
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else
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return {};
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}
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StringRef implCached(uintptr_t addr)
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{
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Map::iterator it;
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bool inserted;
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std::lock_guard lock(mutex);
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map.emplace(addr, it, inserted);
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if (inserted)
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it->getSecond() = impl(addr);
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return it->getSecond();
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}
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};
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void registerFunctionAddressToLine(FunctionFactory & factory)
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{
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factory.registerFunction<FunctionAddressToLine>();
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}
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}
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@ -5,11 +5,13 @@ class FunctionFactory;
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void registerFunctionSymbolizeAddress(FunctionFactory & factory);
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void registerFunctionDemangle(FunctionFactory & factory);
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void registerFunctionAddressToLine(FunctionFactory & factory);
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void registerFunctionsIntrospection(FunctionFactory & factory)
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{
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registerFunctionSymbolizeAddress(factory);
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registerFunctionDemangle(factory);
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registerFunctionAddressToLine(factory);
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}
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}
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