1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
//===-- ThreadMemory.cpp ----------------------------------------------*- C++
//-*-===//
//
// 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 "Plugins/Process/Utility/ThreadMemory.h"
#include "Plugins/Process/Utility/RegisterContextThreadMemory.h"
#include "lldb/Target/OperatingSystem.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/RegisterContext.h"
#include "lldb/Target/StopInfo.h"
#include "lldb/Target/Unwind.h"
using namespace lldb;
using namespace lldb_private;
ThreadMemory::ThreadMemory(Process &process, tid_t tid,
const ValueObjectSP &thread_info_valobj_sp)
: Thread(process, tid), m_backing_thread_sp(),
m_thread_info_valobj_sp(thread_info_valobj_sp), m_name(), m_queue() {}
ThreadMemory::ThreadMemory(Process &process, lldb::tid_t tid,
llvm::StringRef name, llvm::StringRef queue,
lldb::addr_t register_data_addr)
: Thread(process, tid), m_backing_thread_sp(), m_thread_info_valobj_sp(),
m_name(name), m_queue(queue), m_register_data_addr(register_data_addr) {}
ThreadMemory::~ThreadMemory() { DestroyThread(); }
void ThreadMemory::WillResume(StateType resume_state) {
if (m_backing_thread_sp)
m_backing_thread_sp->WillResume(resume_state);
}
void ThreadMemory::ClearStackFrames() {
if (m_backing_thread_sp)
m_backing_thread_sp->ClearStackFrames();
Thread::ClearStackFrames();
}
RegisterContextSP ThreadMemory::GetRegisterContext() {
if (!m_reg_context_sp)
m_reg_context_sp.reset(
new RegisterContextThreadMemory(*this, m_register_data_addr));
return m_reg_context_sp;
}
RegisterContextSP
ThreadMemory::CreateRegisterContextForFrame(StackFrame *frame) {
RegisterContextSP reg_ctx_sp;
uint32_t concrete_frame_idx = 0;
if (frame)
concrete_frame_idx = frame->GetConcreteFrameIndex();
if (concrete_frame_idx == 0) {
reg_ctx_sp = GetRegisterContext();
} else {
Unwind *unwinder = GetUnwinder();
if (unwinder != nullptr)
reg_ctx_sp = unwinder->CreateRegisterContextForFrame(frame);
}
return reg_ctx_sp;
}
bool ThreadMemory::CalculateStopInfo() {
if (m_backing_thread_sp) {
lldb::StopInfoSP backing_stop_info_sp(
m_backing_thread_sp->GetPrivateStopInfo());
if (backing_stop_info_sp &&
backing_stop_info_sp->IsValidForOperatingSystemThread(*this)) {
backing_stop_info_sp->SetThread(shared_from_this());
SetStopInfo(backing_stop_info_sp);
return true;
}
} else {
ProcessSP process_sp(GetProcess());
if (process_sp) {
OperatingSystem *os = process_sp->GetOperatingSystem();
if (os) {
SetStopInfo(os->CreateThreadStopReason(this));
return true;
}
}
}
return false;
}
void ThreadMemory::RefreshStateAfterStop() {
if (m_backing_thread_sp)
return m_backing_thread_sp->RefreshStateAfterStop();
if (m_reg_context_sp)
m_reg_context_sp->InvalidateAllRegisters();
}
|
