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9adc8ddad0
This is an odd corner case of the use of scripts loaded from dSYM's - a macOS only feature, which can load OS Plugins that re-present the thread state of the program we attach to. If we find out about and load the dSYM scripts when we discover a target in the course of attaching to it, we can end up running the OS plugin before we've started up the private state thread. However, the os_plugin in that case will be running before we broadcast the stop event to the public event listener. So it should formally use the private state and not the public state for the Python code environment. This patch says that if we have not yet started up the private state thread, then any thread that is servicing events is doing so on behalf of the private state machinery, and should see the private state, not the public state. Most of the patch is getting a test that will actually reproduce the error. Only the test `test_python_os_plugin_remote` actually reproduced the error. In `test_python_os_plugin` we actually do start up the private state thread before handling the event. `test_python_os_plugin` is there for completeness sake.
53 lines
1.6 KiB
C++
53 lines
1.6 KiB
C++
//===-- HostThread.cpp ----------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Host/HostThread.h"
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#include "lldb/Host/HostNativeThread.h"
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using namespace lldb;
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using namespace lldb_private;
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HostThread::HostThread() : m_native_thread(new HostNativeThread) {}
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HostThread::HostThread(lldb::thread_t thread)
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: m_native_thread(new HostNativeThread(thread)) {}
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Status HostThread::Join(lldb::thread_result_t *result) {
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return m_native_thread->Join(result);
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}
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Status HostThread::Cancel() { return m_native_thread->Cancel(); }
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void HostThread::Reset() { return m_native_thread->Reset(); }
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lldb::thread_t HostThread::Release() { return m_native_thread->Release(); }
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bool HostThread::IsJoinable() const { return m_native_thread->IsJoinable(); }
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HostNativeThread &HostThread::GetNativeThread() {
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return static_cast<HostNativeThread &>(*m_native_thread);
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}
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const HostNativeThread &HostThread::GetNativeThread() const {
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return static_cast<const HostNativeThread &>(*m_native_thread);
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}
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lldb::thread_result_t HostThread::GetResult() const {
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return m_native_thread->GetResult();
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}
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bool HostThread::EqualsThread(lldb::thread_t thread) const {
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return m_native_thread->EqualsThread(thread);
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}
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bool HostThread::HasThread() const {
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if (!m_native_thread)
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return false;
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return m_native_thread->GetSystemHandle() != LLDB_INVALID_HOST_THREAD;
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}
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