484d0408f9
When providing allocation and deallocation traces, the ASan compiler-rt runtime already provides call addresses (`TracePCType::Calls`). On Darwin, system sanitizers (libsanitizers) provides return address. It also discards a few non-user frames at the top of the stack, because these internal libmalloc/libsanitizers stack frames do not provide any value when diagnosing memory errors. Introduce and add handling for `TracePCType::ReturnsNoZerothFrame` to cover this case and enable libsanitizers traces line-level testing. rdar://157596927 --- Commit 1 is a mechanical refactoring to introduce and adopt `TracePCType` enum to replace `pcs_are_call_addresses` bool. It preserve the current behavior: ``` pcs_are_call_addresses: false -> TracePCType::Returns (default) true -> TracePCType::Calls ``` Best reviewed commit by commit.
85 lines
2.7 KiB
C++
85 lines
2.7 KiB
C++
//===-- HistoryThread.cpp -------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/lldb-private.h"
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#include "Plugins/Process/Utility/HistoryThread.h"
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#include "Plugins/Process/Utility/HistoryUnwind.h"
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#include "Plugins/Process/Utility/RegisterContextHistory.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Target/StackFrameList.h"
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#include "lldb/Utility/LLDBLog.h"
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#include "lldb/Utility/Log.h"
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#include <memory>
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using namespace lldb;
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using namespace lldb_private;
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// Constructor
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HistoryThread::HistoryThread(lldb_private::Process &process, lldb::tid_t tid,
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std::vector<lldb::addr_t> pcs,
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HistoryPCType pc_type)
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: Thread(process, tid, true), m_framelist_mutex(), m_framelist(),
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m_pcs(pcs), m_extended_unwind_token(LLDB_INVALID_ADDRESS), m_queue_name(),
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m_thread_name(), m_originating_unique_thread_id(tid),
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m_queue_id(LLDB_INVALID_QUEUE_ID) {
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m_unwinder_up = std::make_unique<HistoryUnwind>(*this, pcs, pc_type);
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Log *log = GetLog(LLDBLog::Object);
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LLDB_LOGF(log, "%p HistoryThread::HistoryThread", static_cast<void *>(this));
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}
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// Destructor
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HistoryThread::~HistoryThread() {
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Log *log = GetLog(LLDBLog::Object);
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LLDB_LOGF(log, "%p HistoryThread::~HistoryThread (tid=0x%" PRIx64 ")",
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static_cast<void *>(this), GetID());
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DestroyThread();
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}
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lldb::RegisterContextSP HistoryThread::GetRegisterContext() {
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RegisterContextSP rctx;
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if (m_pcs.size() > 0) {
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rctx = std::make_shared<RegisterContextHistory>(
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*this, 0, GetProcess()->GetAddressByteSize(), m_pcs[0]);
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}
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return rctx;
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}
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lldb::RegisterContextSP
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HistoryThread::CreateRegisterContextForFrame(StackFrame *frame) {
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return m_unwinder_up->CreateRegisterContextForFrame(frame);
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}
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lldb::StackFrameListSP HistoryThread::GetStackFrameList() {
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// FIXME do not throw away the lock after we acquire it..
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std::unique_lock<std::mutex> lock(m_framelist_mutex);
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lock.unlock();
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if (m_framelist.get() == nullptr) {
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m_framelist =
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std::make_shared<StackFrameList>(*this, StackFrameListSP(), true);
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}
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return m_framelist;
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}
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uint32_t HistoryThread::GetExtendedBacktraceOriginatingIndexID() {
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if (m_originating_unique_thread_id != LLDB_INVALID_THREAD_ID) {
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if (GetProcess()->HasAssignedIndexIDToThread(
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m_originating_unique_thread_id)) {
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return GetProcess()->AssignIndexIDToThread(
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m_originating_unique_thread_id);
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}
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}
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return LLDB_INVALID_THREAD_ID;
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}
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