8b3af63b89
A lot of comments in LLDB are surrounded by an ASCII line to delimit the begging and end of the comment. Its use is not really consistent across the code base, sometimes the lines are longer, sometimes they are shorter and sometimes they are omitted. Furthermore, it looks kind of weird with the 80 column limit, where the comment actually extends past the line, but not by much. Furthermore, when /// is used for Doxygen comments, it looks particularly odd. And when // is used, it incorrectly gives the impression that it's actually a Doxygen comment. I assume these lines were added to improve distinguishing between comments and code. However, given that todays editors and IDEs do a great job at highlighting comments, I think it's worth to drop this for the sake of consistency. The alternative is fixing all the inconsistencies, which would create a lot more churn. Differential revision: https://reviews.llvm.org/D60508 llvm-svn: 358135
166 lines
4.4 KiB
C++
166 lines
4.4 KiB
C++
//===-- NativeThreadDarwin.h ---------------------------------- -*- C++ -*-===//
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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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#ifndef NativeThreadDarwin_H
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#define NativeThreadDarwin_H
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// C includes
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#include <mach/mach_types.h>
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#include <sched.h>
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#include <sys/proc_info.h>
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// C++ includes
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#include <map>
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#include <memory>
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#include <string>
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// LLDB includes
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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 "MachException.h"
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namespace lldb_private {
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namespace process_darwin {
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class NativeProcessDarwin;
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using NativeProcessDarwinSP = std::shared_ptr<NativeProcessDarwin>;
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class NativeThreadListDarwin;
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class NativeThreadDarwin : public NativeThreadProtocol {
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friend class NativeProcessDarwin;
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friend class NativeThreadListDarwin;
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public:
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static uint64_t
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GetGloballyUniqueThreadIDForMachPortID(::thread_t mach_port_id);
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NativeThreadDarwin(NativeProcessDarwin *process, bool is_64_bit,
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lldb::tid_t unique_thread_id = 0,
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::thread_t mach_thread_port = 0);
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// NativeThreadProtocol Interface
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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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// New methods that are fine for others to call.
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void Dump(Stream &stream) const;
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private:
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// Interface for friend classes
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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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bool NotifyException(MachException::Data &exc);
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bool ShouldStop(bool &step_more) const;
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void ThreadDidStop();
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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
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/// argument. Otherwise, return LLDB_INVALID_SIGNAL_NUMBER.
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bool IsStopped(int *signo);
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const struct thread_basic_info *GetBasicInfo() const;
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static bool GetBasicInfo(::thread_t thread,
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struct thread_basic_info *basicInfoPtr);
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bool IsUserReady() const;
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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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/// Return the mach thread port number for this thread.
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///
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/// \return
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/// The mach port number for this thread. Returns NULL_THREAD
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/// when the thread is invalid.
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thread_t GetMachPortNumber() const { return m_mach_thread_port; }
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static bool MachPortNumberIsValid(::thread_t thread);
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// Private interface
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bool GetIdentifierInfo();
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void MaybeLogStateChange(lldb::StateType new_state);
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NativeProcessDarwinSP GetNativeProcessDarwinSP();
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void SetStopped();
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inline void MaybePrepareSingleStepWorkaround();
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inline void MaybeCleanupSingleStepWorkaround();
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// Member Variables
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// The mach thread port for the thread.
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::thread_t m_mach_thread_port;
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// The most recently-retrieved thread basic info.
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mutable ::thread_basic_info m_basic_info;
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struct proc_threadinfo m_proc_threadinfo;
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thread_identifier_info_data_t m_ident_info;
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#if 0
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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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// cpu_set_t m_original_cpu_set; // For single-step workaround.
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#endif
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};
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typedef std::shared_ptr<NativeThreadDarwin> NativeThreadDarwinSP;
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} // namespace process_darwin
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} // namespace lldb_private
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#endif // #ifndef NativeThreadDarwin_H
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