79 lines · cpp
1//===-- InstrumentationRuntimeStopInfo.cpp --------------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include "lldb/Target/InstrumentationRuntimeStopInfo.h"10 11#include "lldb/Core/Module.h"12#include "lldb/Target/InstrumentationRuntime.h"13#include "lldb/Target/Process.h"14#include "lldb/lldb-enumerations.h"15#include "lldb/lldb-private.h"16 17using namespace lldb;18using namespace lldb_private;19 20static bool IsStoppedInDarwinSanitizer(Thread &thread, Module &module) {21 return module.GetFileSpec().GetFilename().GetStringRef().starts_with(22 "libclang_rt.");23}24 25InstrumentationRuntimeStopInfo::InstrumentationRuntimeStopInfo(26 Thread &thread, std::string description,27 StructuredData::ObjectSP additional_data)28 : StopInfo(thread, 0) {29 m_extended_info = additional_data;30 m_description = description;31}32 33const char *InstrumentationRuntimeStopInfo::GetDescription() {34 return m_description.c_str();35}36 37StopInfoSP38InstrumentationRuntimeStopInfo::CreateStopReasonWithInstrumentationData(39 Thread &thread, std::string description,40 StructuredData::ObjectSP additionalData) {41 return StopInfoSP(42 new InstrumentationRuntimeStopInfo(thread, description, additionalData));43}44 45std::optional<uint32_t>46InstrumentationRuntimeStopInfo::GetSuggestedStackFrameIndex(47 bool inlined_stack) {48 ThreadSP thread_sp = GetThread();49 if (!thread_sp)50 return std::nullopt;51 52 // Defensive upper-bound of when we stop walking up the frames in53 // case we somehow ended up looking at an infinite recursion.54 constexpr size_t max_stack_depth = 128;55 56 // Start at parent frame.57 size_t stack_idx = 1;58 StackFrameSP most_relevant_frame_sp =59 thread_sp->GetStackFrameAtIndex(stack_idx);60 61 while (most_relevant_frame_sp && stack_idx <= max_stack_depth) {62 auto const &sc =63 most_relevant_frame_sp->GetSymbolContext(lldb::eSymbolContextModule);64 65 if (!sc.module_sp)66 return std::nullopt;67 68 // Found a frame outside of the sanitizer runtime libraries.69 // That's the one we want to display.70 if (!IsStoppedInDarwinSanitizer(*thread_sp, *sc.module_sp))71 return stack_idx;72 73 ++stack_idx;74 most_relevant_frame_sp = thread_sp->GetStackFrameAtIndex(stack_idx);75 }76 77 return stack_idx;78}79