ThreadTest.cpp
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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 "lldb/Core/Debugger.h"
#include "lldb/Host/FileSystem.h"
#include "lldb/Host/HostInfo.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/StopInfo.h"
#include "lldb/Utility/ArchSpec.h"
#include "lldb/Utility/Reproducer.h"
#include "gtest/gtest.h"
using namespace lldb_private;
using namespace lldb_private::repro;
using namespace lldb;
namespace {
class ThreadTest : public ::testing::Test {
public:
void SetUp() override {
llvm::cantFail(Reproducer::Initialize(ReproducerMode::Off, llvm::None));
FileSystem::Initialize();
HostInfo::Initialize();
platform_linux::PlatformLinux::Initialize();
}
void TearDown() override {
platform_linux::PlatformLinux::Terminate();
HostInfo::Terminate();
FileSystem::Terminate();
Reproducer::Terminate();
}
};
class DummyProcess : public Process {
public:
using Process::Process;
virtual bool CanDebug(lldb::TargetSP target, bool plugin_specified_by_name) {
return true;
}
virtual Status DoDestroy() { return {}; }
virtual void RefreshStateAfterStop() {}
virtual size_t DoReadMemory(lldb::addr_t vm_addr, void *buf, size_t size,
Status &error) {
return 0;
}
virtual bool UpdateThreadList(ThreadList &old_thread_list,
ThreadList &new_thread_list) {
return false;
}
virtual ConstString GetPluginName() { return ConstString("Dummy"); }
virtual uint32_t GetPluginVersion() { return 0; }
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) {
Status error;
PlatformSP platform_sp;
TargetSP target_sp;
error = debugger_sp->GetTargetList().CreateTarget(
*debugger_sp, "", arch, eLoadDependentsNo, platform_sp, target_sp);
if (target_sp) {
debugger_sp->GetTargetList().SetSelectedTarget(target_sp.get());
}
return target_sp;
}
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);
}