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//===-- ThreadTest.cpp ------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lldb/Target/Thread.h"
#include "Plugins/Platform/Linux/PlatformLinux.h"
#include <thread>
#ifdef _WIN32
#include "lldb/Host/windows/HostThreadWindows.h"
#include "lldb/Host/windows/windows.h"
#include "Plugins/Platform/Windows/PlatformWindows.h"
#include "Plugins/Process/Windows/Common/LocalDebugDelegate.h"
#include "Plugins/Process/Windows/Common/ProcessWindows.h"
#include "Plugins/Process/Windows/Common/TargetThreadWindows.h"
#endif
#include "lldb/Core/Debugger.h"
#include "lldb/Host/FileSystem.h"
#include "lldb/Host/HostInfo.h"
#include "lldb/Host/HostThread.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/StopInfo.h"
#include "lldb/Utility/ArchSpec.h"
#include "gtest/gtest.h"
using namespace lldb_private;
using namespace lldb;
namespace {
#ifdef _WIN32
using SetThreadDescriptionFunctionPtr =
HRESULT(WINAPI *)(HANDLE hThread, PCWSTR lpThreadDescription);
static SetThreadDescriptionFunctionPtr SetThreadName;
#endif
class ThreadTest : public ::testing::Test {
public:
void SetUp() override {
FileSystem::Initialize();
HostInfo::Initialize();
#ifdef _WIN32
HMODULE hModule = ::LoadLibraryW(L"Kernel32.dll");
if (hModule) {
SetThreadName = reinterpret_cast<SetThreadDescriptionFunctionPtr>(
(void *)::GetProcAddress(hModule, "SetThreadDescription"));
}
PlatformWindows::Initialize();
#endif
platform_linux::PlatformLinux::Initialize();
}
void TearDown() override {
#ifdef _WIN32
PlatformWindows::Terminate();
#endif
platform_linux::PlatformLinux::Terminate();
HostInfo::Terminate();
FileSystem::Terminate();
}
};
class DummyProcess : public Process {
public:
DummyProcess(lldb::TargetSP target_sp, lldb::ListenerSP listener_sp)
: Process(target_sp, listener_sp) {}
bool CanDebug(lldb::TargetSP target, bool plugin_specified_by_name) override {
return true;
}
Status DoDestroy() override { return {}; }
void RefreshStateAfterStop() override {}
size_t DoReadMemory(lldb::addr_t vm_addr, void *buf, size_t size,
Status &error) override {
return 0;
}
bool DoUpdateThreadList(ThreadList &old_thread_list,
ThreadList &new_thread_list) override {
return false;
}
llvm::StringRef GetPluginName() override { return "Dummy"; }
ProcessModID &GetModIDNonConstRef() { return m_mod_id; }
};
class DummyThread : public Thread {
public:
using Thread::Thread;
~DummyThread() override { DestroyThread(); }
void RefreshStateAfterStop() override {}
lldb::RegisterContextSP GetRegisterContext() override { return nullptr; }
lldb::RegisterContextSP
CreateRegisterContextForFrame(StackFrame *frame) override {
return nullptr;
}
bool CalculateStopInfo() override { return false; }
bool IsStillAtLastBreakpointHit() override { return true; }
};
} // namespace
TargetSP CreateTarget(DebuggerSP &debugger_sp, ArchSpec &arch) {
PlatformSP platform_sp;
TargetSP target_sp;
debugger_sp->GetTargetList().CreateTarget(
*debugger_sp, "", arch, eLoadDependentsNo, platform_sp, target_sp);
return target_sp;
}
#ifdef _WIN32
std::shared_ptr<TargetThreadWindows>
CreateWindowsThread(const ProcessWindowsSP &process_sp, std::thread &t) {
HostThread host_thread((lldb::thread_t)t.native_handle());
ThreadSP thread_sp =
std::make_shared<TargetThreadWindows>(*process_sp.get(), host_thread);
return std::static_pointer_cast<TargetThreadWindows>(thread_sp);
}
TEST_F(ThreadTest, GetThreadDescription) {
if (!SetThreadName)
return;
ArchSpec arch(HostInfo::GetArchitecture());
Platform::SetHostPlatform(PlatformWindows::CreateInstance(true, &arch));
DebuggerSP debugger_sp = Debugger::CreateInstance();
ASSERT_TRUE(debugger_sp);
TargetSP target_sp = CreateTarget(debugger_sp, arch);
ASSERT_TRUE(target_sp);
ListenerSP listener_sp(Listener::MakeListener("dummy"));
auto process_sp = std::static_pointer_cast<ProcessWindows>(
ProcessWindows::CreateInstance(target_sp, listener_sp, nullptr, false));
ASSERT_TRUE(process_sp);
std::thread t([]() {});
auto thread_sp = CreateWindowsThread(process_sp, t);
DWORD tid = thread_sp->GetHostThread().GetNativeThread().GetThreadId();
HANDLE hThread = ::OpenThread(THREAD_SET_LIMITED_INFORMATION, FALSE, tid);
ASSERT_TRUE(hThread);
SetThreadName(hThread, L"thread name");
::CloseHandle(hThread);
ASSERT_STREQ(thread_sp->GetName(), "thread name");
t.join();
}
#endif
TEST_F(ThreadTest, SetStopInfo) {
ArchSpec arch("powerpc64-pc-linux");
Platform::SetHostPlatform(
platform_linux::PlatformLinux::CreateInstance(true, &arch));
DebuggerSP debugger_sp = Debugger::CreateInstance();
ASSERT_TRUE(debugger_sp);
TargetSP target_sp = CreateTarget(debugger_sp, arch);
ASSERT_TRUE(target_sp);
ListenerSP listener_sp(Listener::MakeListener("dummy"));
ProcessSP process_sp = std::make_shared<DummyProcess>(target_sp, listener_sp);
ASSERT_TRUE(process_sp);
DummyProcess *process = static_cast<DummyProcess *>(process_sp.get());
ThreadSP thread_sp = std::make_shared<DummyThread>(*process_sp.get(), 0);
ASSERT_TRUE(thread_sp);
StopInfoSP stopinfo_sp =
StopInfo::CreateStopReasonWithBreakpointSiteID(*thread_sp.get(), 0);
ASSERT_TRUE(stopinfo_sp->IsValid() == true);
/*
Should make stopinfo valid.
*/
process->GetModIDNonConstRef().BumpStopID();
ASSERT_TRUE(stopinfo_sp->IsValid() == false);
thread_sp->SetStopInfo(stopinfo_sp);
ASSERT_TRUE(stopinfo_sp->IsValid() == true);
}
TEST_F(ThreadTest, GetPrivateStopInfo) {
ArchSpec arch("powerpc64-pc-linux");
Platform::SetHostPlatform(
platform_linux::PlatformLinux::CreateInstance(true, &arch));
DebuggerSP debugger_sp = Debugger::CreateInstance();
ASSERT_TRUE(debugger_sp);
TargetSP target_sp = CreateTarget(debugger_sp, arch);
ASSERT_TRUE(target_sp);
ListenerSP listener_sp(Listener::MakeListener("dummy"));
ProcessSP process_sp = std::make_shared<DummyProcess>(target_sp, listener_sp);
ASSERT_TRUE(process_sp);
DummyProcess *process = static_cast<DummyProcess *>(process_sp.get());
ThreadSP thread_sp = std::make_shared<DummyThread>(*process_sp.get(), 0);
ASSERT_TRUE(thread_sp);
StopInfoSP stopinfo_sp =
StopInfo::CreateStopReasonWithBreakpointSiteID(*thread_sp.get(), 0);
ASSERT_TRUE(stopinfo_sp);
thread_sp->SetStopInfo(stopinfo_sp);
/*
Should make stopinfo valid if thread is at last breakpoint hit.
*/
process->GetModIDNonConstRef().BumpStopID();
ASSERT_TRUE(stopinfo_sp->IsValid() == false);
StopInfoSP new_stopinfo_sp = thread_sp->GetPrivateStopInfo();
ASSERT_TRUE(new_stopinfo_sp && stopinfo_sp->IsValid() == true);
}
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