1 //===-- UnixSignals.h -------------------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #ifndef lldb_UnixSignals_h_
11 #define lldb_UnixSignals_h_
17 #include "lldb/Utility/ConstString.h"
18 #include "lldb/lldb-private.h"
19 #include "llvm/ADT/Optional.h"
21 namespace lldb_private {
25 static lldb::UnixSignalsSP Create(const ArchSpec &arch);
27 //------------------------------------------------------------------
28 // Constructors and Destructors
29 //------------------------------------------------------------------
32 virtual ~UnixSignals();
34 const char *GetSignalAsCString(int32_t signo) const;
36 bool SignalIsValid(int32_t signo) const;
38 int32_t GetSignalNumberFromName(const char *name) const;
40 const char *GetSignalInfo(int32_t signo, bool &should_suppress,
41 bool &should_stop, bool &should_notify) const;
43 bool GetShouldSuppress(int32_t signo) const;
45 bool SetShouldSuppress(int32_t signo, bool value);
47 bool SetShouldSuppress(const char *signal_name, bool value);
49 bool GetShouldStop(int32_t signo) const;
51 bool SetShouldStop(int32_t signo, bool value);
52 bool SetShouldStop(const char *signal_name, bool value);
54 bool GetShouldNotify(int32_t signo) const;
56 bool SetShouldNotify(int32_t signo, bool value);
58 bool SetShouldNotify(const char *signal_name, bool value);
60 // These provide an iterator through the signals available on this system.
61 // Call GetFirstSignalNumber to get the first entry, then iterate on
62 // GetNextSignalNumber till you get back LLDB_INVALID_SIGNAL_NUMBER.
63 int32_t GetFirstSignalNumber() const;
65 int32_t GetNextSignalNumber(int32_t current_signal) const;
67 int32_t GetNumSignals() const;
69 int32_t GetSignalAtIndex(int32_t index) const;
71 ConstString GetShortName(ConstString name) const;
73 // We assume that the elements of this object are constant once it is
74 // constructed, since a process should never need to add or remove symbols as
75 // it runs. So don't call these functions anywhere but the constructor of
76 // your subclass of UnixSignals or in your Process Plugin's GetUnixSignals
77 // method before you return the UnixSignal object.
79 void AddSignal(int signo, const char *name, bool default_suppress,
80 bool default_stop, bool default_notify,
81 const char *description, const char *alias = nullptr);
83 void RemoveSignal(int signo);
85 // Returns a current version of the data stored in this class. Version gets
86 // incremented each time Set... method is called.
87 uint64_t GetVersion() const;
89 // Returns a vector of signals that meet criteria provided in arguments. Each
90 // should_[suppress|stop|notify] flag can be None - no filtering by this
91 // flag true - only signals that have it set to true are returned false -
92 // only signals that have it set to true are returned
93 std::vector<int32_t> GetFilteredSignals(llvm::Optional<bool> should_suppress,
94 llvm::Optional<bool> should_stop,
95 llvm::Optional<bool> should_notify);
98 //------------------------------------------------------------------
99 // Classes that inherit from UnixSignals can see and modify these
100 //------------------------------------------------------------------
105 std::string m_description;
106 bool m_suppress : 1, m_stop : 1, m_notify : 1;
108 Signal(const char *name, bool default_suppress, bool default_stop,
109 bool default_notify, const char *description, const char *alias);
114 virtual void Reset();
116 typedef std::map<int32_t, Signal> collection;
118 collection m_signals;
120 // This version gets incremented every time something is changing in this
121 // class, including when we call AddSignal from the constructor. So after the
122 // object is constructed m_version is going to be > 0 if it has at least one
123 // signal registered in it.
124 uint64_t m_version = 0;
126 // GDBRemote signals need to be copyable.
127 UnixSignals(const UnixSignals &rhs);
129 const UnixSignals &operator=(const UnixSignals &rhs) = delete;
133 #endif // lldb_UnixSignals_h_