Method Attach

core/adapters/lldbadapter.cpp:245–307

bool LldbAdapter::Attach(std::uint32_t pid)
{
	m_debugger.SetAsync(true);

	std::thread thread([&]() { EventListener(); });
	thread.detach();

	SBError err;

	// *Attempt* to create a functional target triple for the binary.
	// This allows attaching to fat binaries. If the triple is empty, it will still attach on thin binaries.
	auto archName = lldbArchNameForBinaryNinjaArchName(m_defaultArchitecture);
	std::string triple = "";
	if (!archName.empty())
		triple = archName + "-unknown-none";

	m_target = m_debugger.CreateTarget(m_originalFileName.c_str(), triple.c_str(), "", true, err);

	if (!m_target.IsValid())
	{
		// It is likely lldb did not like our target triple.
		if (err.GetCString() && std::string(err.GetCString()).find("is not compatible with") != std::string::npos)
		{
			// Last-ditch effort. If it is a thin binary, we will be able to attach without passing a triple.
			m_target = m_debugger.CreateTarget(m_originalFileName.c_str(), "", "", true, err);
		}
	}

	if (!m_target.IsValid())
	{
		DebuggerEvent event;
		event.type = LaunchFailureEventType;
		event.data.errorData.shortError = fmt::format("LLDB failed to attach to target.");
		event.data.errorData.error =
			fmt::format("LLDB failed to attach to target with \"{}\"", err.GetCString() ? err.GetCString() : "");
		PostDebuggerEvent(event);
		return false;
	}

	m_targetActive = true;
	ApplyBreakpoints();

	SBAttachInfo info(pid);
	m_process = m_target.Attach(info, err);
	if (!m_process.IsValid() || (m_process.GetState() == StateType::eStateInvalid) || err.Fail())
	{
		DebuggerEvent event;
		event.type = LaunchFailureEventType;
		event.data.errorData.shortError = fmt::format("LLDB failed to attach to target.");
		event.data.errorData.error =
			fmt::format("LLDB Failed to attach to target with \"{}\"", err.GetCString() ? err.GetCString() : "");
		PostDebuggerEvent(event);
		return false;
	}

	// LLDB event listener does not get an event when the attach operation completes, so we must send an event here.
	// This is NOT needed for Connect(), since LLDB event listener sends an event in that case.
	DebuggerEvent dbgevt;