include/wx/msw/stackwalk.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/msw/stackwalk.h
   3 // Purpose:     wxStackWalker for MSW
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     2005-01-08
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2005 Vadim Zeitlin <vadim@wxwindows.org>
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_MSW_STACKWALK_H_
  13 #define _WX_MSW_STACKWALK_H_
  14
  15 #include "wx/arrstr.h"
  16
  17 // these structs are declared in windows headers
  18 struct _CONTEXT;
  19 struct _EXCEPTION_POINTERS;
  20
  21 // and these in dbghelp.h
  22 struct _SYMBOL_INFO;
  23
  24 // ----------------------------------------------------------------------------
  25 // wxStackFrame
  26 // ----------------------------------------------------------------------------
  27
  28 class WXDLLIMPEXP_BASE wxStackFrame : public wxStackFrameBase
  29 {
  30 private:
  31     wxStackFrame *ConstCast() const
  32         { return const_cast<wxStackFrame *>(this); }
  33
  34     size_t DoGetParamCount() const { return m_paramTypes.GetCount(); }
  35
  36 public:
  37     wxStackFrame(size_t level, void *address, size_t addrFrame)
  38         : wxStackFrameBase(level, address)
  39     {
  40         m_hasName =
  41         m_hasLocation = false;
  42
  43         m_addrFrame = addrFrame;
  44     }
  45
  46     virtual size_t GetParamCount() const
  47     {
  48         ConstCast()->OnGetParam();
  49         return DoGetParamCount();
  50     }
  51
  52     virtual bool
  53     GetParam(size_t n, wxString *type, wxString *name, wxString *value) const;
  54
  55     // callback used by OnGetParam(), don't call directly
  56     void OnParam(_SYMBOL_INFO *pSymInfo);
  57
  58 protected:
  59     virtual void OnGetName();
  60     virtual void OnGetLocation();
  61
  62     void OnGetParam();
  63
  64
  65     // helper for debug API: it wants to have addresses as DWORDs
  66     size_t GetSymAddr() const
  67     {
  68         return reinterpret_cast<size_t>(m_address);
  69     }
  70
  71 private:
  72     bool m_hasName,
  73          m_hasLocation;
  74
  75     size_t m_addrFrame;
  76
  77     wxArrayString m_paramTypes,
  78                   m_paramNames,
  79                   m_paramValues;
  80 };
  81
  82 // ----------------------------------------------------------------------------
  83 // wxStackWalker
  84 // ----------------------------------------------------------------------------
  85
  86 class WXDLLIMPEXP_BASE wxStackWalker : public wxStackWalkerBase
  87 {
  88 public:
  89     // we don't use ctor argument, it is for compatibility with Unix version
  90     // only
  91     wxStackWalker(const char * WXUNUSED(argv0) = NULL) { }
  92
  93     virtual void Walk(size_t skip = 1, size_t maxDepth = 200);
  94 #if wxUSE_ON_FATAL_EXCEPTION
  95     virtual void WalkFromException(size_t maxDepth = 200);
  96 #endif // wxUSE_ON_FATAL_EXCEPTION
  97
  98
  99     // enumerate stack frames from the given context
 100     void WalkFrom(const _CONTEXT *ctx, size_t skip = 1, size_t maxDepth = 200);
 101     void WalkFrom(const _EXCEPTION_POINTERS *ep, size_t skip = 1, size_t maxDepth = 200);
 102 };
 103
 104 #endif // _WX_MSW_STACKWALK_H_
 105