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