1 //===-- NativeThreadLinux.h ----------------------------------- -*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #ifndef liblldb_NativeThreadLinux_H_
11 #define liblldb_NativeThreadLinux_H_
12 
13 #include "lldb/lldb-private-forward.h"
14 #include "lldb/Host/common/NativeThreadProtocol.h"
15 
16 #include <map>
17 
18 namespace lldb_private
19 {
20     class NativeProcessLinux;
21 
22     class NativeThreadLinux : public NativeThreadProtocol
23     {
24         friend class NativeProcessLinux;
25 
26     public:
27         NativeThreadLinux (NativeProcessLinux *process, lldb::tid_t tid);
28 
29         // ---------------------------------------------------------------------
30         // NativeThreadProtocol Interface
31         // ---------------------------------------------------------------------
32         std::string
33         GetName() override;
34 
35         lldb::StateType
36         GetState () override;
37 
38         bool
39         GetStopReason (ThreadStopInfo &stop_info, std::string& description) override;
40 
41         NativeRegisterContextSP
42         GetRegisterContext () override;
43 
44         Error
45         SetWatchpoint (lldb::addr_t addr, size_t size, uint32_t watch_flags, bool hardware) override;
46 
47         Error
48         RemoveWatchpoint (lldb::addr_t addr) override;
49 
50     private:
51         // ---------------------------------------------------------------------
52         // Interface for friend classes
53         // ---------------------------------------------------------------------
54         void
55         SetLaunching ();
56 
57         void
58         SetRunning ();
59 
60         void
61         SetStepping ();
62 
63         void
64         SetStoppedBySignal (uint32_t signo);
65 
66         /// Return true if the thread is stopped.
67         /// If stopped by a signal, indicate the signo in the signo argument.
68         /// Otherwise, return LLDB_INVALID_SIGNAL_NUMBER.
69         bool
70         IsStopped (int *signo);
71 
72         void
73         SetStoppedByExec ();
74 
75         void
76         SetStoppedByBreakpoint ();
77 
78         void
79         SetStoppedByWatchpoint ();
80 
81         bool
82         IsStoppedAtBreakpoint ();
83 
84         bool
85         IsStoppedAtWatchpoint ();
86 
87         void
88         SetStoppedByTrace ();
89 
90         void
91         SetCrashedWithException (const siginfo_t& info);
92 
93         void
94         SetSuspended ();
95 
96         void
97         SetExited ();
98 
99         // ---------------------------------------------------------------------
100         // Private interface
101         // ---------------------------------------------------------------------
102         void
103         MaybeLogStateChange (lldb::StateType new_state);
104 
105         // ---------------------------------------------------------------------
106         // Member Variables
107         // ---------------------------------------------------------------------
108         lldb::StateType m_state;
109         ThreadStopInfo m_stop_info;
110         NativeRegisterContextSP m_reg_context_sp;
111         std::string m_stop_description;
112         using WatchpointIndexMap = std::map<lldb::addr_t, uint32_t>;
113         WatchpointIndexMap m_watchpoint_index_map;
114     };
115 }
116 
117 #endif // #ifndef liblldb_NativeThreadLinux_H_
118