1 //===-- ThreadTest.cpp ------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "lldb/Target/Thread.h"
10 #include "Plugins/Platform/Linux/PlatformLinux.h"
11 #include "lldb/Core/Debugger.h"
12 #include "lldb/Host/FileSystem.h"
13 #include "lldb/Host/HostInfo.h"
14 #include "lldb/Target/Process.h"
15 #include "lldb/Target/StopInfo.h"
16 #include "lldb/Utility/ArchSpec.h"
17 #include "lldb/Utility/Reproducer.h"
18 #include "gtest/gtest.h"
19
20 using namespace lldb_private;
21 using namespace lldb_private::repro;
22 using namespace lldb;
23
24 namespace {
25 class ThreadTest : public ::testing::Test {
26 public:
SetUp()27 void SetUp() override {
28 llvm::cantFail(Reproducer::Initialize(ReproducerMode::Off, llvm::None));
29 FileSystem::Initialize();
30 HostInfo::Initialize();
31 platform_linux::PlatformLinux::Initialize();
32 }
TearDown()33 void TearDown() override {
34 platform_linux::PlatformLinux::Terminate();
35 HostInfo::Terminate();
36 FileSystem::Terminate();
37 Reproducer::Terminate();
38 }
39 };
40
41 class DummyProcess : public Process {
42 public:
43 using Process::Process;
44
CanDebug(lldb::TargetSP target,bool plugin_specified_by_name)45 bool CanDebug(lldb::TargetSP target, bool plugin_specified_by_name) override {
46 return true;
47 }
DoDestroy()48 Status DoDestroy() override { return {}; }
RefreshStateAfterStop()49 void RefreshStateAfterStop() override {}
DoReadMemory(lldb::addr_t vm_addr,void * buf,size_t size,Status & error)50 size_t DoReadMemory(lldb::addr_t vm_addr, void *buf, size_t size,
51 Status &error) override {
52 return 0;
53 }
DoUpdateThreadList(ThreadList & old_thread_list,ThreadList & new_thread_list)54 bool DoUpdateThreadList(ThreadList &old_thread_list,
55 ThreadList &new_thread_list) override {
56 return false;
57 }
GetPluginName()58 llvm::StringRef GetPluginName() override { return "Dummy"; }
59
GetModIDNonConstRef()60 ProcessModID &GetModIDNonConstRef() { return m_mod_id; }
61 };
62
63 class DummyThread : public Thread {
64 public:
65 using Thread::Thread;
66
~DummyThread()67 ~DummyThread() override { DestroyThread(); }
68
RefreshStateAfterStop()69 void RefreshStateAfterStop() override {}
70
GetRegisterContext()71 lldb::RegisterContextSP GetRegisterContext() override { return nullptr; }
72
73 lldb::RegisterContextSP
CreateRegisterContextForFrame(StackFrame * frame)74 CreateRegisterContextForFrame(StackFrame *frame) override {
75 return nullptr;
76 }
77
CalculateStopInfo()78 bool CalculateStopInfo() override { return false; }
79
IsStillAtLastBreakpointHit()80 bool IsStillAtLastBreakpointHit() override { return true; }
81 };
82 } // namespace
83
CreateTarget(DebuggerSP & debugger_sp,ArchSpec & arch)84 TargetSP CreateTarget(DebuggerSP &debugger_sp, ArchSpec &arch) {
85 PlatformSP platform_sp;
86 TargetSP target_sp;
87 debugger_sp->GetTargetList().CreateTarget(
88 *debugger_sp, "", arch, eLoadDependentsNo, platform_sp, target_sp);
89
90 return target_sp;
91 }
92
TEST_F(ThreadTest,SetStopInfo)93 TEST_F(ThreadTest, SetStopInfo) {
94 ArchSpec arch("powerpc64-pc-linux");
95
96 Platform::SetHostPlatform(
97 platform_linux::PlatformLinux::CreateInstance(true, &arch));
98
99 DebuggerSP debugger_sp = Debugger::CreateInstance();
100 ASSERT_TRUE(debugger_sp);
101
102 TargetSP target_sp = CreateTarget(debugger_sp, arch);
103 ASSERT_TRUE(target_sp);
104
105 ListenerSP listener_sp(Listener::MakeListener("dummy"));
106 ProcessSP process_sp = std::make_shared<DummyProcess>(target_sp, listener_sp);
107 ASSERT_TRUE(process_sp);
108
109 DummyProcess *process = static_cast<DummyProcess *>(process_sp.get());
110
111 ThreadSP thread_sp = std::make_shared<DummyThread>(*process_sp.get(), 0);
112 ASSERT_TRUE(thread_sp);
113
114 StopInfoSP stopinfo_sp =
115 StopInfo::CreateStopReasonWithBreakpointSiteID(*thread_sp.get(), 0);
116 ASSERT_TRUE(stopinfo_sp->IsValid() == true);
117
118 /*
119 Should make stopinfo valid.
120 */
121 process->GetModIDNonConstRef().BumpStopID();
122 ASSERT_TRUE(stopinfo_sp->IsValid() == false);
123
124 thread_sp->SetStopInfo(stopinfo_sp);
125 ASSERT_TRUE(stopinfo_sp->IsValid() == true);
126 }
127
TEST_F(ThreadTest,GetPrivateStopInfo)128 TEST_F(ThreadTest, GetPrivateStopInfo) {
129 ArchSpec arch("powerpc64-pc-linux");
130
131 Platform::SetHostPlatform(
132 platform_linux::PlatformLinux::CreateInstance(true, &arch));
133
134 DebuggerSP debugger_sp = Debugger::CreateInstance();
135 ASSERT_TRUE(debugger_sp);
136
137 TargetSP target_sp = CreateTarget(debugger_sp, arch);
138 ASSERT_TRUE(target_sp);
139
140 ListenerSP listener_sp(Listener::MakeListener("dummy"));
141 ProcessSP process_sp = std::make_shared<DummyProcess>(target_sp, listener_sp);
142 ASSERT_TRUE(process_sp);
143
144 DummyProcess *process = static_cast<DummyProcess *>(process_sp.get());
145
146 ThreadSP thread_sp = std::make_shared<DummyThread>(*process_sp.get(), 0);
147 ASSERT_TRUE(thread_sp);
148
149 StopInfoSP stopinfo_sp =
150 StopInfo::CreateStopReasonWithBreakpointSiteID(*thread_sp.get(), 0);
151 ASSERT_TRUE(stopinfo_sp);
152
153 thread_sp->SetStopInfo(stopinfo_sp);
154
155 /*
156 Should make stopinfo valid if thread is at last breakpoint hit.
157 */
158 process->GetModIDNonConstRef().BumpStopID();
159 ASSERT_TRUE(stopinfo_sp->IsValid() == false);
160 StopInfoSP new_stopinfo_sp = thread_sp->GetPrivateStopInfo();
161 ASSERT_TRUE(new_stopinfo_sp && stopinfo_sp->IsValid() == true);
162 }
163