fd2433e139
Replace default bodies of special member functions with = default; $ run-clang-tidy.py -header-filter='lldb' -checks='-*,modernize-use-equals-default' -fix , https://clang.llvm.org/extra/clang-tidy/checks/modernize-use-equals-default.html Differential revision: https://reviews.llvm.org/D104041
74 lines
2.3 KiB
C++
74 lines
2.3 KiB
C++
//===-- HistoryUnwind.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/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/StackFrame.h"
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#include "lldb/Target/Target.h"
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#include "lldb/Target/Thread.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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HistoryUnwind::HistoryUnwind(Thread &thread, std::vector<lldb::addr_t> pcs,
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bool pcs_are_call_addresses)
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: Unwind(thread), m_pcs(pcs),
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m_pcs_are_call_addresses(pcs_are_call_addresses) {}
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// Destructor
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HistoryUnwind::~HistoryUnwind() = default;
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void HistoryUnwind::DoClear() {
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std::lock_guard<std::recursive_mutex> guard(m_unwind_mutex);
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m_pcs.clear();
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}
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lldb::RegisterContextSP
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HistoryUnwind::DoCreateRegisterContextForFrame(StackFrame *frame) {
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RegisterContextSP rctx;
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if (frame) {
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addr_t pc = frame->GetFrameCodeAddress().GetLoadAddress(
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&frame->GetThread()->GetProcess()->GetTarget());
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if (pc != LLDB_INVALID_ADDRESS) {
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rctx = std::make_shared<RegisterContextHistory>(
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*frame->GetThread().get(), frame->GetConcreteFrameIndex(),
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frame->GetThread()->GetProcess()->GetAddressByteSize(), pc);
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}
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}
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return rctx;
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}
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bool HistoryUnwind::DoGetFrameInfoAtIndex(uint32_t frame_idx, lldb::addr_t &cfa,
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lldb::addr_t &pc,
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bool &behaves_like_zeroth_frame) {
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// FIXME do not throw away the lock after we acquire it..
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std::unique_lock<std::recursive_mutex> guard(m_unwind_mutex);
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guard.unlock();
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if (frame_idx < m_pcs.size()) {
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cfa = frame_idx;
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pc = m_pcs[frame_idx];
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if (m_pcs_are_call_addresses)
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behaves_like_zeroth_frame = true;
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else
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behaves_like_zeroth_frame = (frame_idx == 0);
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return true;
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}
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return false;
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}
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uint32_t HistoryUnwind::DoGetFrameCount() { return m_pcs.size(); }
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