| 1 | //===-- InstrumentationRuntimeStopInfo.cpp --------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "lldb/Target/InstrumentationRuntimeStopInfo.h" |
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| 10 | |
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| 11 | #include "lldb/Core/Module.h" |
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| 12 | #include "lldb/Target/InstrumentationRuntime.h" |
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| 13 | #include "lldb/Target/Process.h" |
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| 14 | #include "lldb/lldb-enumerations.h" |
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| 15 | #include "lldb/lldb-private.h" |
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| 16 | |
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| 17 | using namespace lldb; |
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| 18 | using namespace lldb_private; |
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| 19 | |
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| 20 | static bool IsStoppedInDarwinSanitizer(Thread &thread, Module &module) { |
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| 21 | return module.GetFileSpec().GetFilename().GetStringRef().starts_with( |
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| 22 | Prefix: "libclang_rt." ); |
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| 23 | } |
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| 24 | |
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| 25 | InstrumentationRuntimeStopInfo::InstrumentationRuntimeStopInfo( |
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| 26 | Thread &thread, std::string description, |
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| 27 | StructuredData::ObjectSP additional_data) |
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| 28 | : StopInfo(thread, 0) { |
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| 29 | m_extended_info = additional_data; |
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| 30 | m_description = description; |
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| 31 | } |
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| 32 | |
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| 33 | const char *InstrumentationRuntimeStopInfo::GetDescription() { |
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| 34 | return m_description.c_str(); |
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| 35 | } |
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| 36 | |
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| 37 | StopInfoSP |
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| 38 | InstrumentationRuntimeStopInfo::CreateStopReasonWithInstrumentationData( |
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| 39 | Thread &thread, std::string description, |
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| 40 | StructuredData::ObjectSP additionalData) { |
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| 41 | return StopInfoSP( |
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| 42 | new InstrumentationRuntimeStopInfo(thread, description, additionalData)); |
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| 43 | } |
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| 44 | |
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| 45 | std::optional<uint32_t> |
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| 46 | InstrumentationRuntimeStopInfo::GetSuggestedStackFrameIndex( |
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| 47 | bool inlined_stack) { |
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| 48 | ThreadSP thread_sp = GetThread(); |
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| 49 | if (!thread_sp) |
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| 50 | return std::nullopt; |
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| 51 | |
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| 52 | // Defensive upper-bound of when we stop walking up the frames in |
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| 53 | // case we somehow ended up looking at an infinite recursion. |
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| 54 | constexpr size_t max_stack_depth = 128; |
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| 55 | |
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| 56 | // Start at parent frame. |
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| 57 | size_t stack_idx = 1; |
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| 58 | StackFrameSP most_relevant_frame_sp = |
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| 59 | thread_sp->GetStackFrameAtIndex(idx: stack_idx); |
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| 60 | |
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| 61 | while (most_relevant_frame_sp && stack_idx <= max_stack_depth) { |
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| 62 | auto const &sc = |
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| 63 | most_relevant_frame_sp->GetSymbolContext(resolve_scope: lldb::eSymbolContextModule); |
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| 64 | |
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| 65 | if (!sc.module_sp) |
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| 66 | return std::nullopt; |
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| 67 | |
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| 68 | // Found a frame outside of the sanitizer runtime libraries. |
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| 69 | // That's the one we want to display. |
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| 70 | if (!IsStoppedInDarwinSanitizer(thread&: *thread_sp, module&: *sc.module_sp)) |
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| 71 | return stack_idx; |
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| 72 | |
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| 73 | ++stack_idx; |
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| 74 | most_relevant_frame_sp = thread_sp->GetStackFrameAtIndex(idx: stack_idx); |
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| 75 | } |
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| 76 | |
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| 77 | return stack_idx; |
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| 78 | } |
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| 79 | |
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