mirror of
https://github.com/JakeHillion/object-introspection.git
synced 2024-11-13 22:06:55 +00:00
587 lines
17 KiB
C++
587 lines
17 KiB
C++
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "oi/FuncGen.h"
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#include <glog/logging.h>
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#include <boost/format.hpp>
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#include <map>
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#include "oi/ContainerInfo.h"
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using ObjectIntrospection::Feature;
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using ObjectIntrospection::FeatureSet;
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namespace {
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const std::string typedValueFunc = R"(
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void getSizeType(const %1%& t, size_t& returnArg)
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{
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const uint8_t KindOfPersistentDict = 14;
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const uint8_t KindOfDict = 15;
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const uint8_t KindOfPersistentVec = 22;
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const uint8_t KindOfVec = 23;
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const uint8_t KindOfPersistentKeyset = 26;
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const uint8_t KindOfKeyset = 27;
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const uint8_t KindOfRecord = 29;
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const uint8_t KindOfPersistentString = 38;
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const uint8_t KindOfString = 39;
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const uint8_t KindOfObject = 43;
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const uint8_t KindOfResource = 45;
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const uint8_t KindOfRFunc = 51;
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const uint8_t KindOfRClsMeth = 53;
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const uint8_t KindOfClsMeth = 56;
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const uint8_t KindOfBoolean = 70;
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const uint8_t KindOfInt64 = 74;
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const uint8_t KindOfDouble = 76;
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const uint8_t KindOfFunc = 82;
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const uint8_t KindOfClass = 84;
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const uint8_t KindOfLazyClass = 88;
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const uint8_t KindOfUninit = 98;
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const uint8_t KindOfNull = 100;
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SAVE_DATA((uintptr_t)t.m_type);
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switch(t.m_type) {
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case KindOfInt64:
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case KindOfBoolean:
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SAVE_DATA(0);
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getSizeType(t.m_data.num, returnArg);
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break;
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case KindOfDouble:
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SAVE_DATA(1);
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getSizeType(t.m_data.dbl, returnArg);
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break;
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case KindOfPersistentString:
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case KindOfString:
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SAVE_DATA(2);
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getSizeType(t.m_data.pstr, returnArg);
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break;
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case KindOfPersistentDict:
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case KindOfDict:
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case KindOfPersistentVec:
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case KindOfVec:
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case KindOfPersistentKeyset:
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case KindOfKeyset:
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SAVE_DATA(3);
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getSizeType(t.m_data.parr, returnArg);
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break;
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case KindOfObject:
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SAVE_DATA(4);
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getSizeType(t.m_data.pobj, returnArg);
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break;
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case KindOfResource:
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SAVE_DATA(5);
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getSizeType(t.m_data.pres, returnArg);
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break;
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case KindOfFunc:
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SAVE_DATA(8);
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getSizeType(t.m_data.pfunc, returnArg);
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break;
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case KindOfRFunc:
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SAVE_DATA(9);
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getSizeType(t.m_data.prfunc, returnArg);
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break;
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case KindOfClass:
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SAVE_DATA(10);
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getSizeType(t.m_data.pclass, returnArg);
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break;
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case KindOfClsMeth:
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SAVE_DATA(11);
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getSizeType(t.m_data.pclsmeth, returnArg);
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break;
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case KindOfRClsMeth:
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SAVE_DATA(12);
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getSizeType(t.m_data.prclsmeth, returnArg);
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break;
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case KindOfRecord:
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SAVE_DATA(13);
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getSizeType(t.m_data.prec, returnArg);
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break;
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case KindOfLazyClass:
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SAVE_DATA(14);
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getSizeType(t.m_data.plazyclass, returnArg);
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break;
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case KindOfUninit:
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case KindOfNull:
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break;
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}
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}
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)";
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} // namespace
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void FuncGen::DeclareGetSize(std::string& testCode, const std::string& type) {
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boost::format fmt =
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boost::format("void getSizeType(const %1% &t, size_t& returnArg);\n") %
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type;
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testCode.append(fmt.str());
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}
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void FuncGen::DeclareTopLevelGetSize(std::string& testCode,
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const std::string& type) {
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boost::format fmt = boost::format("void getSizeType(const %1% &t);\n") % type;
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testCode.append(fmt.str());
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}
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void FuncGen::DeclareStoreData(std::string& testCode) {
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testCode.append("void StoreData(uintptr_t data, size_t& dataSegOffset);\n");
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}
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void FuncGen::DeclareAddData(std::string& testCode) {
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testCode.append("void AddData(uint64_t data, size_t& dataSegOffset);\n");
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}
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void FuncGen::DeclareEncodeData(std::string& testCode) {
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testCode.append("size_t EncodeVarint(uint64_t val, uint8_t* buf);\n");
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}
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void FuncGen::DeclareEncodeDataSize(std::string& testCode) {
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testCode.append("size_t EncodeVarintSize(uint64_t val);\n");
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}
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void FuncGen::DefineEncodeData(std::string& testCode) {
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std::string func = R"(
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size_t EncodeVarint(uint64_t val, uint8_t* buf) {
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uint8_t* p = buf;
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while (val >= 128) {
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*p++ = 0x80 | (val & 0x7f);
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val >>= 7;
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}
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*p++ = uint8_t(val);
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return size_t(p - buf);
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}
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)";
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testCode.append(func);
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}
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void FuncGen::DefineEncodeDataSize(std::string& testCode) {
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std::string func = R"(
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size_t EncodeVarintSize(uint64_t val) {
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int s = 1;
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while (val >= 128) {
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++s;
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val >>= 7;
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}
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return s;
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}
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)";
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testCode.append(func);
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}
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void FuncGen::DefineStoreData(std::string& testCode) {
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// TODO: We are encoding twice. Once to check the size and later to
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// actually encode. Maybe just do it once leaving a max of uintptr_t
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// space at the end.
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std::string func = R"(
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void StoreData(uint64_t data, size_t& dataSegOffset) {
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size_t sz = EncodeVarintSize(data);
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if (sz + dataSegOffset < dataSize) {
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auto data_base = reinterpret_cast<uint8_t*>(dataBase);
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data_base += dataSegOffset;
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size_t data_size = EncodeVarint(data, data_base);
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dataSegOffset += data_size;
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} else {
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dataSegOffset += sz;
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}
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}
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)";
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testCode.append(func);
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}
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void FuncGen::DefineAddData(std::string& testCode) {
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std::string func = R"(
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void AddData(uint64_t data, size_t& output) {
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output += data;
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}
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)";
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testCode.append(func);
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}
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void FuncGen::DefineTopLevelGetObjectSize(std::string& testCode,
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const std::string& rawType,
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const std::string& linkageName) {
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std::string func = R"(
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/* RawType: %1% */
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extern "C" int %2%(const OIInternal::__ROOT_TYPE__* ObjectAddr, size_t* ObjectSize)
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{
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*ObjectSize = 0;
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OIInternal::getSizeType(*ObjectAddr, *ObjectSize);
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return 0;
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}
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)";
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boost::format fmt = boost::format(func) % rawType % linkageName;
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testCode.append(fmt.str());
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}
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void FuncGen::DefineTopLevelGetSizeRef(std::string& testCode,
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const std::string& rawType,
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FeatureSet features) {
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std::string func = R"(
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wunknown-attributes"
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/* RawType: %1% */
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void __attribute__((used, retain)) getSize_%2$016x(const OIInternal::__ROOT_TYPE__& t)
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#pragma GCC diagnostic pop
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{
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)";
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if (features[Feature::JitTiming]) {
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func += " const auto startTime = std::chrono::steady_clock::now();\n";
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}
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func += R"(
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pointers.initialize();
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pointers.add((uintptr_t)&t);
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auto data = reinterpret_cast<uintptr_t*>(dataBase);
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size_t dataSegOffset = 0;
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data[dataSegOffset++] = oidMagicId;
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data[dataSegOffset++] = cookieValue;
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uintptr_t& writtenSize = data[dataSegOffset++];
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writtenSize = 0;
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uintptr_t& timeTakenNs = data[dataSegOffset++];
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dataSegOffset *= sizeof(uintptr_t);
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JLOG("%1% @");
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JLOGPTR(&t);
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OIInternal::getSizeType(t, dataSegOffset);
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OIInternal::StoreData((uintptr_t)123456789, dataSegOffset);
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OIInternal::StoreData((uintptr_t)123456789, dataSegOffset);
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writtenSize = dataSegOffset;
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dataBase += dataSegOffset;
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)";
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if (features[Feature::JitTiming]) {
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func += R"(
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timeTakenNs = std::chrono::duration_cast<std::chrono::nanoseconds>(
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std::chrono::steady_clock::now() - startTime).count();
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)";
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}
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func += R"(
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}
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)";
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boost::format fmt =
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boost::format(func) % rawType % std::hash<std::string>{}(rawType);
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testCode.append(fmt.str());
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}
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void FuncGen::DefineTopLevelGetSizeRefTyped(std::string& testCode,
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const std::string& rawType,
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FeatureSet features) {
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std::string func = R"(
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wunknown-attributes"
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/* RawType: %1% */
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void __attribute__((used, retain)) getSize_%2$016x(const OIInternal::__ROOT_TYPE__& t)
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#pragma GCC diagnostic pop
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{
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)";
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if (features[Feature::JitTiming]) {
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func += " const auto startTime = std::chrono::steady_clock::now();\n";
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}
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func += R"(
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pointers.initialize();
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pointers.add((uintptr_t)&t);
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auto data = reinterpret_cast<uintptr_t*>(dataBase);
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// TODO: Replace these with types::st::Uint64 once the VarInt decoding
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// logic is moved out of OIDebugger and into new TreeBuilder.
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size_t dataSegOffset = 0;
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data[dataSegOffset++] = oidMagicId;
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data[dataSegOffset++] = cookieValue;
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uintptr_t& writtenSize = data[dataSegOffset++];
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writtenSize = 0;
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uintptr_t& timeTakenNs = data[dataSegOffset++];
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dataSegOffset *= sizeof(uintptr_t);
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JLOG("%1% @");
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JLOGPTR(&t);
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using ContentType = OIInternal::TypeHandler<DataBuffer::DataSegment, OIInternal::__ROOT_TYPE__>::type;
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using SuffixType = types::st::Pair<
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DataBuffer::DataSegment,
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types::st::VarInt<DataBuffer::DataSegment>,
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types::st::VarInt<DataBuffer::DataSegment>
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>;
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using DataBufferType = types::st::Pair<
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DataBuffer::DataSegment,
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ContentType,
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SuffixType
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>;
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DataBufferType db = DataBuffer::DataSegment(dataSegOffset);
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SuffixType suffix = db.delegate([&t](auto ret) {
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return OIInternal::getSizeType<DataBuffer::DataSegment>(t, ret);
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});
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types::st::Unit<DataBuffer::DataSegment> end = suffix
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.write(123456789)
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.write(123456789);
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dataSegOffset = end.offset();
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writtenSize = dataSegOffset;
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dataBase += dataSegOffset;
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)";
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if (features[Feature::JitTiming]) {
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func += R"(
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timeTakenNs = std::chrono::duration_cast<std::chrono::nanoseconds>(
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std::chrono::steady_clock::now() - startTime).count();
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)";
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}
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func += R"(
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}
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)";
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boost::format fmt =
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boost::format(func) % rawType % std::hash<std::string>{}(rawType);
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testCode.append(fmt.str());
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}
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void FuncGen::DefineTopLevelGetSizeRefRet(std::string& testCode,
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const std::string& rawType) {
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std::string func = R"(
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wunknown-attributes"
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/* Raw Type: %1% */
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size_t __attribute__((used, retain)) getSize(const OIInternal::__ROOT_TYPE__& t)
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#pragma GCC diagnostic pop
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{
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pointers.initialize();
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size_t ret = 0;
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pointers.add((uintptr_t)&t);
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OIInternal::getSizeType(t, ret);
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return ret;
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}
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)";
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boost::format fmt = boost::format(func) % rawType;
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testCode.append(fmt.str());
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}
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void FuncGen::DefineTopLevelGetSizeSmartPtr(std::string& testCode,
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const std::string& rawType,
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FeatureSet features) {
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std::string func = R"(
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wunknown-attributes"
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/* RawType: %1% */
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void __attribute__((used, retain)) getSize_%2$016x(const OIInternal::__ROOT_TYPE__& t)
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#pragma GCC diagnostic pop
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{
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)";
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if (features[Feature::JitTiming]) {
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func += " const auto startTime = std::chrono::steady_clock::now();\n";
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}
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func += R"(
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pointers.initialize();
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auto data = reinterpret_cast<uintptr_t*>(dataBase);
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size_t dataSegOffset = 0;
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data[dataSegOffset++] = oidMagicId;
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data[dataSegOffset++] = cookieValue;
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uintptr_t& writtenSize = data[dataSegOffset++];
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writtenSize = 0;
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uintptr_t& timeTakenNs = data[dataSegOffset++];
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dataSegOffset *= sizeof(uintptr_t);
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OIInternal::getSizeType(t, dataSegOffset);
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OIInternal::StoreData((uintptr_t)123456789, dataSegOffset);
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OIInternal::StoreData((uintptr_t)123456789, dataSegOffset);
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writtenSize = dataSegOffset;
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dataBase += dataSegOffset;
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)";
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if (features[Feature::JitTiming]) {
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func += R"(
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timeTakenNs = std::chrono::duration_cast<std::chrono::nanoseconds>(
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std::chrono::steady_clock::now() - startTime).count();
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)";
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}
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func += R"(
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}
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)";
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boost::format fmt =
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boost::format(func) % rawType % std::hash<std::string>{}(rawType);
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testCode.append(fmt.str());
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}
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bool FuncGen::DeclareGetSizeFuncs(std::string& testCode,
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const ContainerInfoRefSet& containerInfo,
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FeatureSet features) {
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for (const ContainerInfo& cInfo : containerInfo) {
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std::string ctype = cInfo.typeName;
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ctype = ctype.substr(0, ctype.find("<", 0));
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auto& decl = cInfo.codegen.decl;
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boost::format fmt = boost::format(decl) % ctype;
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testCode.append(fmt.str());
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}
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if (features[Feature::ChaseRawPointers]) {
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testCode.append(
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"template<typename T, typename = "
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"std::enable_if_t<!std::is_pointer_v<std::decay_t<T>>>>\n");
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} else {
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testCode.append("template<typename T>\n");
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}
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testCode.append("void getSizeType(const T &t, size_t& returnArg);");
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return true;
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}
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bool FuncGen::DefineGetSizeFuncs(std::string& testCode,
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const ContainerInfoRefSet& containerInfo,
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FeatureSet features) {
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for (const ContainerInfo& cInfo : containerInfo) {
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std::string ctype = cInfo.typeName;
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ctype = ctype.substr(0, ctype.find("<", 0));
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auto& func = cInfo.codegen.func;
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boost::format fmt = boost::format(func) % ctype;
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testCode.append(fmt.str());
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}
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if (features[Feature::ChaseRawPointers]) {
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testCode.append("template<typename T, typename C>\n");
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} else {
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testCode.append("template<typename T>\n");
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}
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testCode.append(R"(
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void getSizeType(const T &t, size_t& returnArg) {
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JLOG("obj @");
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JLOGPTR(&t);
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SAVE_SIZE(sizeof(T));
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}
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)");
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return true;
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}
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void FuncGen::DefineGetSizeTypedValueFunc(std::string& testCode,
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const std::string& ctype) {
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boost::format fmt = boost::format(typedValueFunc) % ctype;
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testCode.append(fmt.str());
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}
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void FuncGen::DeclareGetContainer(std::string& testCode) {
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std::string func = R"(
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template <class ContainerAdapter>
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const typename ContainerAdapter::container_type & get_container (ContainerAdapter &ca)
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{
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struct unwrap : ContainerAdapter {
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static const typename ContainerAdapter::container_type & get (ContainerAdapter &ca) {
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return ca.*&unwrap::c;
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}
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};
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return unwrap::get(ca);
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}
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)";
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testCode.append(func);
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}
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void FuncGen::DefineDataSegmentDataBuffer(std::string& testCode) {
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constexpr std::string_view func = R"(
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namespace ObjectIntrospection {
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namespace DataBuffer {
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class DataBuffer {
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protected:
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void write_byte(uint8_t);
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};
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class DataSegment: public DataBuffer {
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public:
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DataSegment(size_t offset) : buf(dataBase + offset) {}
|
|
void write_byte(uint8_t byte) {
|
|
// TODO: Change the inputs to dataBase / dataEnd to improve this check
|
|
if (buf < (dataBase + dataSize)) {
|
|
*buf = byte;
|
|
}
|
|
buf++;
|
|
}
|
|
size_t offset() {
|
|
return buf - dataBase;
|
|
}
|
|
private:
|
|
uint8_t* buf;
|
|
};
|
|
} // namespace DataBuffer
|
|
} // namespace ObjectIntrospection
|
|
)";
|
|
|
|
testCode.append(func);
|
|
}
|
|
|
|
void FuncGen::DefineBasicTypeHandlers(std::string& testCode) {
|
|
constexpr std::string_view handlers = R"(
|
|
template <typename DB, typename T>
|
|
struct TypeHandler {
|
|
private:
|
|
static auto choose_type() {
|
|
if constexpr(std::is_pointer_v<T>) {
|
|
return std::type_identity<types::st::Pair<DB,
|
|
types::st::VarInt<DB>,
|
|
types::st::Sum<DB,
|
|
types::st::Unit<DB>,
|
|
typename TypeHandler<DB, std::remove_pointer_t<T>>::type
|
|
>>>();
|
|
} else {
|
|
return std::type_identity<types::st::Unit<DB>>();
|
|
}
|
|
}
|
|
public:
|
|
using type = typename decltype(choose_type())::type;
|
|
static types::st::Unit<DB> getSizeType(
|
|
const T& t,
|
|
typename TypeHandler<DB, T>::type returnArg) {
|
|
if constexpr(std::is_pointer_v<T>) {
|
|
JLOG("ptr val @");
|
|
JLOGPTR(t);
|
|
auto r0 = returnArg.write((uintptr_t)t);
|
|
if (t && pointers.add((uintptr_t)t)) {
|
|
return r0.template delegate<1>([&t](auto ret) {
|
|
if constexpr (!std::is_void<std::remove_pointer_t<T>>::value) {
|
|
return TypeHandler<DB, std::remove_pointer_t<T>>::getSizeType(*t, ret);
|
|
} else {
|
|
return ret;
|
|
}
|
|
});
|
|
} else {
|
|
return r0.template delegate<0>(std::identity());
|
|
}
|
|
} else {
|
|
return returnArg;
|
|
}
|
|
}
|
|
};
|
|
template <typename DB>
|
|
class TypeHandler<DB, void> {
|
|
public:
|
|
using type = types::st::Unit<DB>;
|
|
};
|
|
)";
|
|
|
|
testCode.append(handlers);
|
|
}
|