a5be48b3e0
Summary: The NativeThread class is useless without the containing process (and in some places it is already assuming the process is always around). This makes it clear that the NativeProcessProtocol is the object owning the threads, and makes the destruction order deterministic (first threads, then process). The NativeProcess is the only thing holding a thread unique_ptr, and methods that used to hand out thread shared pointers now return raw pointers or references. Reviewers: krytarowski, eugene Subscribers: lldb-commits Differential Revision: https://reviews.llvm.org/D35618 llvm-svn: 316007
117 lines
3.5 KiB
C++
117 lines
3.5 KiB
C++
//===-- NativeThreadLinux.h ----------------------------------- -*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef liblldb_NativeThreadLinux_H_
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#define liblldb_NativeThreadLinux_H_
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#include "SingleStepCheck.h"
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#include "lldb/Host/common/NativeThreadProtocol.h"
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#include "lldb/lldb-private-forward.h"
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#include <csignal>
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#include <map>
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#include <memory>
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#include <string>
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namespace lldb_private {
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namespace process_linux {
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class NativeProcessLinux;
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class NativeThreadLinux : public NativeThreadProtocol {
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friend class NativeProcessLinux;
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public:
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NativeThreadLinux(NativeProcessLinux &process, lldb::tid_t tid);
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// ---------------------------------------------------------------------
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// NativeThreadProtocol Interface
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// ---------------------------------------------------------------------
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std::string GetName() override;
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lldb::StateType GetState() override;
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bool GetStopReason(ThreadStopInfo &stop_info,
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std::string &description) override;
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NativeRegisterContextSP GetRegisterContext() override;
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Status SetWatchpoint(lldb::addr_t addr, size_t size, uint32_t watch_flags,
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bool hardware) override;
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Status RemoveWatchpoint(lldb::addr_t addr) override;
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Status SetHardwareBreakpoint(lldb::addr_t addr, size_t size) override;
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Status RemoveHardwareBreakpoint(lldb::addr_t addr) override;
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private:
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// ---------------------------------------------------------------------
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// Interface for friend classes
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// ---------------------------------------------------------------------
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/// Resumes the thread. If @p signo is anything but
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/// LLDB_INVALID_SIGNAL_NUMBER, deliver that signal to the thread.
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Status Resume(uint32_t signo);
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/// Single steps the thread. If @p signo is anything but
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/// LLDB_INVALID_SIGNAL_NUMBER, deliver that signal to the thread.
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Status SingleStep(uint32_t signo);
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void SetStoppedBySignal(uint32_t signo, const siginfo_t *info = nullptr);
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/// Return true if the thread is stopped.
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/// If stopped by a signal, indicate the signo in the signo argument.
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/// Otherwise, return LLDB_INVALID_SIGNAL_NUMBER.
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bool IsStopped(int *signo);
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void SetStoppedByExec();
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void SetStoppedByBreakpoint();
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void SetStoppedByWatchpoint(uint32_t wp_index);
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bool IsStoppedAtBreakpoint();
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bool IsStoppedAtWatchpoint();
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void SetStoppedByTrace();
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void SetStoppedWithNoReason();
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void SetExited();
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Status RequestStop();
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// ---------------------------------------------------------------------
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// Private interface
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// ---------------------------------------------------------------------
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void MaybeLogStateChange(lldb::StateType new_state);
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NativeProcessLinux &GetProcess();
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void SetStopped();
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// ---------------------------------------------------------------------
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// Member Variables
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// ---------------------------------------------------------------------
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lldb::StateType m_state;
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ThreadStopInfo m_stop_info;
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NativeRegisterContextSP m_reg_context_sp;
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std::string m_stop_description;
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using WatchpointIndexMap = std::map<lldb::addr_t, uint32_t>;
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WatchpointIndexMap m_watchpoint_index_map;
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WatchpointIndexMap m_hw_break_index_map;
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std::unique_ptr<SingleStepWorkaround> m_step_workaround;
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};
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} // namespace process_linux
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} // namespace lldb_private
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#endif // #ifndef liblldb_NativeThreadLinux_H_
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