85 lines · cpp
1//===-- HistoryThread.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-exception6//7//===----------------------------------------------------------------------===//8 9#include "lldb/lldb-private.h"10 11#include "Plugins/Process/Utility/HistoryThread.h"12 13#include "Plugins/Process/Utility/HistoryUnwind.h"14#include "Plugins/Process/Utility/RegisterContextHistory.h"15 16#include "lldb/Target/Process.h"17#include "lldb/Target/StackFrameList.h"18#include "lldb/Utility/LLDBLog.h"19#include "lldb/Utility/Log.h"20 21#include <memory>22 23using namespace lldb;24using namespace lldb_private;25 26// Constructor27 28HistoryThread::HistoryThread(lldb_private::Process &process, lldb::tid_t tid,29 std::vector<lldb::addr_t> pcs,30 HistoryPCType pc_type)31 : Thread(process, tid, true), m_framelist_mutex(), m_framelist(),32 m_pcs(pcs), m_extended_unwind_token(LLDB_INVALID_ADDRESS), m_queue_name(),33 m_thread_name(), m_originating_unique_thread_id(tid),34 m_queue_id(LLDB_INVALID_QUEUE_ID) {35 m_unwinder_up = std::make_unique<HistoryUnwind>(*this, pcs, pc_type);36 Log *log = GetLog(LLDBLog::Object);37 LLDB_LOGF(log, "%p HistoryThread::HistoryThread", static_cast<void *>(this));38}39 40// Destructor41 42HistoryThread::~HistoryThread() {43 Log *log = GetLog(LLDBLog::Object);44 LLDB_LOGF(log, "%p HistoryThread::~HistoryThread (tid=0x%" PRIx64 ")",45 static_cast<void *>(this), GetID());46 DestroyThread();47}48 49lldb::RegisterContextSP HistoryThread::GetRegisterContext() {50 RegisterContextSP rctx;51 if (m_pcs.size() > 0) {52 rctx = std::make_shared<RegisterContextHistory>(53 *this, 0, GetProcess()->GetAddressByteSize(), m_pcs[0]);54 }55 return rctx;56}57 58lldb::RegisterContextSP59HistoryThread::CreateRegisterContextForFrame(StackFrame *frame) {60 return m_unwinder_up->CreateRegisterContextForFrame(frame);61}62 63lldb::StackFrameListSP HistoryThread::GetStackFrameList() {64 // FIXME do not throw away the lock after we acquire it..65 std::unique_lock<std::mutex> lock(m_framelist_mutex);66 lock.unlock();67 if (m_framelist.get() == nullptr) {68 m_framelist =69 std::make_shared<StackFrameList>(*this, StackFrameListSP(), true);70 }71 72 return m_framelist;73}74 75uint32_t HistoryThread::GetExtendedBacktraceOriginatingIndexID() {76 if (m_originating_unique_thread_id != LLDB_INVALID_THREAD_ID) {77 if (GetProcess()->HasAssignedIndexIDToThread(78 m_originating_unique_thread_id)) {79 return GetProcess()->AssignIndexIDToThread(80 m_originating_unique_thread_id);81 }82 }83 return LLDB_INVALID_THREAD_ID;84}85