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1 | /////////////////////////////////////////////////////////////////////////////// | |
2 | // Name: wx/unix/stackwalk.h | |
3 | // Purpose: declaration of wxStackWalker for Unix | |
4 | // Author: Vadim Zeitlin | |
5 | // Modified by: | |
6 | // Created: 2005-01-19 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) 2005 Vadim Zeitlin <vadim@wxwindows.org> | |
9 | // Licence: wxWindows licence | |
10 | /////////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | #ifndef _WX_UNIX_STACKWALK_H_ | |
13 | #define _WX_UNIX_STACKWALK_H_ | |
14 | ||
15 | // ---------------------------------------------------------------------------- | |
16 | // wxStackFrame | |
17 | // ---------------------------------------------------------------------------- | |
18 | ||
19 | class WXDLLIMPEXP_BASE wxStackFrame : public wxStackFrameBase | |
20 | { | |
21 | friend class wxStackWalker; | |
22 | ||
23 | public: | |
24 | // arguments are the stack depth of this frame, its address and the return | |
25 | // value of backtrace_symbols() for it | |
26 | // | |
27 | // NB: we don't copy syminfo pointer so it should have lifetime at least as | |
28 | // long as ours | |
29 | wxStackFrame(size_t level = 0, void *address = NULL, const char *syminfo = NULL) | |
30 | : wxStackFrameBase(level, address) | |
31 | { | |
32 | m_syminfo = syminfo; | |
33 | } | |
34 | ||
35 | protected: | |
36 | virtual void OnGetName(); | |
37 | ||
38 | // optimized for the 2 step initialization done by wxStackWalker | |
39 | void Set(const wxString &name, const wxString &filename, const char* syminfo, | |
40 | size_t level, size_t numLine, void *address) | |
41 | { | |
42 | m_level = level; | |
43 | m_name = name; | |
44 | m_filename = filename; | |
45 | m_syminfo = syminfo; | |
46 | ||
47 | m_line = numLine; | |
48 | m_address = address; | |
49 | } | |
50 | ||
51 | private: | |
52 | const char *m_syminfo; | |
53 | }; | |
54 | ||
55 | // ---------------------------------------------------------------------------- | |
56 | // wxStackWalker | |
57 | // ---------------------------------------------------------------------------- | |
58 | ||
59 | class WXDLLIMPEXP_BASE wxStackWalker : public wxStackWalkerBase | |
60 | { | |
61 | public: | |
62 | // we need the full path to the program executable to be able to use | |
63 | // addr2line, normally we can retrieve it from wxTheApp but if wxTheApp | |
64 | // doesn't exist or doesn't have the correct value, the path may be given | |
65 | // explicitly | |
66 | wxStackWalker(const char *argv0 = NULL) | |
67 | { | |
68 | ms_exepath = wxString::FromAscii(argv0); | |
69 | } | |
70 | ||
71 | ~wxStackWalker() | |
72 | { | |
73 | FreeStack(); | |
74 | } | |
75 | ||
76 | virtual void Walk(size_t skip = 1, size_t maxDepth = 200); | |
77 | virtual void WalkFromException() { Walk(2); } | |
78 | ||
79 | static const wxString& GetExePath() { return ms_exepath; } | |
80 | ||
81 | ||
82 | // these two may be used to save the stack at some point (fast operation) | |
83 | // and then process it later (slow operation) | |
84 | void SaveStack(size_t maxDepth); | |
85 | void ProcessFrames(size_t skip); | |
86 | void FreeStack(); | |
87 | ||
88 | private: | |
89 | int InitFrames(wxStackFrame *arr, size_t n, void **addresses, char **syminfo); | |
90 | ||
91 | static wxString ms_exepath; | |
92 | static void *ms_addresses[]; | |
93 | static char **ms_symbols; | |
94 | static int m_depth; | |
95 | }; | |
96 | ||
97 | #endif // _WX_UNIX_STACKWALK_H_ |