| 1 | //===-- HistoryThread.h -----------------------------------------*- C++ -*-===// |
|---|---|
| 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-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #ifndef LLDB_SOURCE_PLUGINS_PROCESS_UTILITY_HISTORYTHREAD_H |
| 10 | #define LLDB_SOURCE_PLUGINS_PROCESS_UTILITY_HISTORYTHREAD_H |
| 11 | |
| 12 | #include <mutex> |
| 13 | |
| 14 | #include "lldb/Core/UserSettingsController.h" |
| 15 | #include "lldb/Target/ExecutionContextScope.h" |
| 16 | #include "lldb/Target/StackFrameList.h" |
| 17 | #include "lldb/Target/Thread.h" |
| 18 | #include "lldb/Utility/Broadcaster.h" |
| 19 | #include "lldb/Utility/Event.h" |
| 20 | #include "lldb/Utility/UserID.h" |
| 21 | #include "lldb/lldb-private.h" |
| 22 | |
| 23 | namespace lldb_private { |
| 24 | |
| 25 | /// \class HistoryThread HistoryThread.h "HistoryThread.h" |
| 26 | /// A thread object representing a backtrace from a previous point in the |
| 27 | /// process execution |
| 28 | /// |
| 29 | /// This subclass of Thread is used to provide a backtrace from earlier in |
| 30 | /// process execution. It is given a backtrace list of pc addresses and it |
| 31 | /// will create stack frames for them. |
| 32 | |
| 33 | class HistoryThread : public lldb_private::Thread { |
| 34 | public: |
| 35 | HistoryThread(lldb_private::Process &process, lldb::tid_t tid, |
| 36 | std::vector<lldb::addr_t> pcs, |
| 37 | bool pcs_are_call_addresses = false); |
| 38 | |
| 39 | ~HistoryThread() override; |
| 40 | |
| 41 | lldb::RegisterContextSP GetRegisterContext() override; |
| 42 | |
| 43 | lldb::RegisterContextSP |
| 44 | CreateRegisterContextForFrame(StackFrame *frame) override; |
| 45 | |
| 46 | void RefreshStateAfterStop() override {} |
| 47 | |
| 48 | bool CalculateStopInfo() override { return false; } |
| 49 | |
| 50 | void SetExtendedBacktraceToken(uint64_t token) override { |
| 51 | m_extended_unwind_token = token; |
| 52 | } |
| 53 | |
| 54 | uint64_t GetExtendedBacktraceToken() override { |
| 55 | return m_extended_unwind_token; |
| 56 | } |
| 57 | |
| 58 | const char *GetQueueName() override { return m_queue_name.c_str(); } |
| 59 | |
| 60 | void SetQueueName(const char *name) override { m_queue_name = name; } |
| 61 | |
| 62 | lldb::queue_id_t GetQueueID() override { return m_queue_id; } |
| 63 | |
| 64 | void SetQueueID(lldb::queue_id_t queue) override { m_queue_id = queue; } |
| 65 | |
| 66 | const char *GetThreadName() { return m_thread_name.c_str(); } |
| 67 | |
| 68 | uint32_t GetExtendedBacktraceOriginatingIndexID() override; |
| 69 | |
| 70 | void SetThreadName(const char *name) { m_thread_name = name; } |
| 71 | |
| 72 | const char *GetName() override { return m_thread_name.c_str(); } |
| 73 | |
| 74 | void SetName(const char *name) override { m_thread_name = name; } |
| 75 | |
| 76 | protected: |
| 77 | virtual lldb::StackFrameListSP GetStackFrameList(); |
| 78 | |
| 79 | mutable std::mutex m_framelist_mutex; |
| 80 | lldb::StackFrameListSP m_framelist; |
| 81 | std::vector<lldb::addr_t> m_pcs; |
| 82 | |
| 83 | uint64_t m_extended_unwind_token; |
| 84 | std::string m_queue_name; |
| 85 | std::string m_thread_name; |
| 86 | lldb::tid_t m_originating_unique_thread_id; |
| 87 | lldb::queue_id_t m_queue_id; |
| 88 | }; |
| 89 | |
| 90 | } // namespace lldb_private |
| 91 | |
| 92 | #endif // LLDB_SOURCE_PLUGINS_PROCESS_UTILITY_HISTORYTHREAD_H |
| 93 |