99 lines
3 KiB
C++
99 lines
3 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: wx/unix/stackwalk.h
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// Purpose: declaration of wxStackWalker for Unix
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 2005-01-19
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// Copyright: (c) 2005 Vadim Zeitlin <vadim@wxwindows.org>
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_UNIX_STACKWALK_H_
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#define _WX_UNIX_STACKWALK_H_
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// ----------------------------------------------------------------------------
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// wxStackFrame
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_BASE wxStackFrame : public wxStackFrameBase
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{
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friend class wxStackWalker;
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public:
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// arguments are the stack depth of this frame, its address and the return
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// value of backtrace_symbols() for it
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//
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// NB: we don't copy syminfo pointer so it should have lifetime at least as
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// long as ours
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wxStackFrame(size_t level = 0, void *address = NULL, const char *syminfo = NULL)
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: wxStackFrameBase(level, address)
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{
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m_syminfo = syminfo;
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}
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protected:
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virtual void OnGetName();
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// optimized for the 2 step initialization done by wxStackWalker
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void Set(const wxString &name, const wxString &filename, const char* syminfo,
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size_t level, size_t numLine, void *address)
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{
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m_level = level;
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m_name = name;
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m_filename = filename;
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m_syminfo = syminfo;
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m_line = numLine;
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m_address = address;
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}
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private:
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const char *m_syminfo;
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};
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// ----------------------------------------------------------------------------
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// wxStackWalker
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_BASE wxStackWalker : public wxStackWalkerBase
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{
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public:
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// we need the full path to the program executable to be able to use
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// addr2line, normally we can retrieve it from wxTheApp but if wxTheApp
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// doesn't exist or doesn't have the correct value, the path may be given
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// explicitly
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wxStackWalker(const char *argv0 = NULL)
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{
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ms_exepath = wxString::FromAscii(argv0);
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}
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~wxStackWalker()
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{
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FreeStack();
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}
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virtual void Walk(size_t skip = 1, size_t maxDepth = wxSTACKWALKER_MAX_DEPTH);
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#if wxUSE_ON_FATAL_EXCEPTION
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virtual void WalkFromException(size_t maxDepth = wxSTACKWALKER_MAX_DEPTH) { Walk(2, maxDepth); }
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#endif // wxUSE_ON_FATAL_EXCEPTION
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static const wxString& GetExePath() { return ms_exepath; }
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// these two may be used to save the stack at some point (fast operation)
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// and then process it later (slow operation)
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void SaveStack(size_t maxDepth);
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void ProcessFrames(size_t skip);
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void FreeStack();
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private:
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int InitFrames(wxStackFrame *arr, size_t n, void **addresses, char **syminfo);
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static wxString ms_exepath;
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static void *ms_addresses[];
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static char **ms_symbols;
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static int m_depth;
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};
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#endif // _WX_UNIX_STACKWALK_H_
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