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author | 2020-08-03 14:33:06 +0000 | |
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committer | 2020-08-03 14:33:06 +0000 | |
commit | 061da546b983eb767bad15e67af1174fb0bcf31c (patch) | |
tree | 83c78b820819d70aa40c36d90447978b300078c5 /gnu/llvm/lldb/source/Plugins/Process/Utility/HistoryThread.cpp | |
parent | Import LLVM 10.0.0 release including clang, lld and lldb. (diff) | |
download | wireguard-openbsd-061da546b983eb767bad15e67af1174fb0bcf31c.tar.xz wireguard-openbsd-061da546b983eb767bad15e67af1174fb0bcf31c.zip |
Import LLVM 10.0.0 release including clang, lld and lldb.
ok hackroom
tested by plenty
Diffstat (limited to 'gnu/llvm/lldb/source/Plugins/Process/Utility/HistoryThread.cpp')
-rw-r--r-- | gnu/llvm/lldb/source/Plugins/Process/Utility/HistoryThread.cpp | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/gnu/llvm/lldb/source/Plugins/Process/Utility/HistoryThread.cpp b/gnu/llvm/lldb/source/Plugins/Process/Utility/HistoryThread.cpp new file mode 100644 index 00000000000..295c17e474f --- /dev/null +++ b/gnu/llvm/lldb/source/Plugins/Process/Utility/HistoryThread.cpp @@ -0,0 +1,82 @@ +//===-- HistoryThread.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 "lldb/lldb-private.h" + +#include "Plugins/Process/Utility/HistoryThread.h" + +#include "Plugins/Process/Utility/HistoryUnwind.h" +#include "Plugins/Process/Utility/RegisterContextHistory.h" + +#include "lldb/Target/Process.h" +#include "lldb/Target/StackFrameList.h" +#include "lldb/Utility/Log.h" + +#include <memory> + +using namespace lldb; +using namespace lldb_private; + +// Constructor + +HistoryThread::HistoryThread(lldb_private::Process &process, lldb::tid_t tid, + std::vector<lldb::addr_t> pcs) + : Thread(process, tid, true), m_framelist_mutex(), m_framelist(), + m_pcs(pcs), m_extended_unwind_token(LLDB_INVALID_ADDRESS), m_queue_name(), + m_thread_name(), m_originating_unique_thread_id(tid), + m_queue_id(LLDB_INVALID_QUEUE_ID) { + m_unwinder_up.reset(new HistoryUnwind(*this, pcs)); + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); + LLDB_LOGF(log, "%p HistoryThread::HistoryThread", static_cast<void *>(this)); +} + +// Destructor + +HistoryThread::~HistoryThread() { + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); + LLDB_LOGF(log, "%p HistoryThread::~HistoryThread (tid=0x%" PRIx64 ")", + static_cast<void *>(this), GetID()); + DestroyThread(); +} + +lldb::RegisterContextSP HistoryThread::GetRegisterContext() { + RegisterContextSP rctx; + if (m_pcs.size() > 0) { + rctx = std::make_shared<RegisterContextHistory>( + *this, 0, GetProcess()->GetAddressByteSize(), m_pcs[0]); + } + return rctx; +} + +lldb::RegisterContextSP +HistoryThread::CreateRegisterContextForFrame(StackFrame *frame) { + return m_unwinder_up->CreateRegisterContextForFrame(frame); +} + +lldb::StackFrameListSP HistoryThread::GetStackFrameList() { + // FIXME do not throw away the lock after we acquire it.. + std::unique_lock<std::mutex> lock(m_framelist_mutex); + lock.unlock(); + if (m_framelist.get() == nullptr) { + m_framelist = + std::make_shared<StackFrameList>(*this, StackFrameListSP(), true); + } + + return m_framelist; +} + +uint32_t HistoryThread::GetExtendedBacktraceOriginatingIndexID() { + if (m_originating_unique_thread_id != LLDB_INVALID_THREAD_ID) { + if (GetProcess()->HasAssignedIndexIDToThread( + m_originating_unique_thread_id)) { + return GetProcess()->AssignIndexIDToThread( + m_originating_unique_thread_id); + } + } + return LLDB_INVALID_THREAD_ID; +} |