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LibJS: Lazily collect stack trace information

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The previous implementation was calling `backtrace()` for every
function call, which is quite slow.

Instead, this implementation provides VM::stack_trace() which unwinds
the native stack, maps it through NativeExecutable::get_source_range
and combines it with source ranges from interpreted call frames.
This commit is contained in:
Simon Wanner 2023-11-01 00:39:28 +01:00 • committed by Andreas Kling
parent 77dc7c4d36
commit 68f4d21de2
11 changed files with 96 additions and 46 deletions
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2
Userland/Libraries/LibJS/JIT/NativeExecutable.h
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@ -34,7 +34,7 @@ public:
void run(VM&) const;
void dump_disassembly(Bytecode::Executable const& executable) const;
BytecodeMapping const& find_mapping_entry(size_t native_offset) const;
Optional<Bytecode::InstructionStreamIterator const&> instruction_stream_iterator(Bytecode::Executable const& executable) const;
Optional<UnrealizedSourceRange> get_source_range(Bytecode::Executable const& executable, FlatPtr address) const;
ReadonlyBytes code_bytes() const { return { m_code, m_size }; }