1 //===---------- DebugUtils.cpp - Utilities for debugging ORC JITs ---------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "llvm/ExecutionEngine/Orc/DebugUtils.h" 10 #include "llvm/Support/Debug.h" 11 #include "llvm/Support/MemoryBuffer.h" 12 #include "llvm/Support/Path.h" 13 #include "llvm/Support/raw_ostream.h" 14 15 #define DEBUG_TYPE "orc" 16 17 namespace llvm { 18 namespace orc { 19 20 DumpObjects::DumpObjects(std::string DumpDir, std::string IdentifierOverride) 21 : DumpDir(std::move(DumpDir)), 22 IdentifierOverride(std::move(IdentifierOverride)) { 23 24 /// Discard any trailing separators. 25 while (!this->DumpDir.empty() && 26 sys::path::is_separator(this->DumpDir.back())) 27 this->DumpDir.pop_back(); 28 } 29 30 Expected<std::unique_ptr<MemoryBuffer>> 31 DumpObjects::operator()(std::unique_ptr<MemoryBuffer> Obj) { 32 size_t Idx = 1; 33 34 std::string DumpPathStem; 35 raw_string_ostream(DumpPathStem) 36 << DumpDir << (DumpDir.empty() ? "" : "/") << getBufferIdentifier(*Obj); 37 38 std::string DumpPath = DumpPathStem + ".o"; 39 while (sys::fs::exists(DumpPath)) { 40 DumpPath.clear(); 41 raw_string_ostream(DumpPath) << DumpPathStem << "." << (++Idx) << ".o"; 42 } 43 44 LLVM_DEBUG({ 45 dbgs() << "Dumping object buffer [ " << (const void *)Obj->getBufferStart() 46 << " -- " << (const void *)(Obj->getBufferEnd() - 1) << " ] to " 47 << DumpPath << "\n"; 48 }); 49 50 std::error_code EC; 51 raw_fd_ostream DumpStream(DumpPath, EC); 52 if (EC) 53 return errorCodeToError(EC); 54 DumpStream.write(Obj->getBufferStart(), Obj->getBufferSize()); 55 56 return std::move(Obj); 57 } 58 59 StringRef DumpObjects::getBufferIdentifier(MemoryBuffer &B) { 60 if (!IdentifierOverride.empty()) 61 return IdentifierOverride; 62 StringRef Identifier = B.getBufferIdentifier(); 63 Identifier.consume_back(".o"); 64 return Identifier; 65 } 66 67 } // End namespace orc. 68 } // End namespace llvm. 69