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// -*- C++ -*-
//=============================================================================
/**
* @file Stack_Trace.h
*
* $Id$
*
* @brief Encapsulate string representation of stack trace.
*
* @author Chris Cleeland <cleeland at ociweb dot com>
*/
//=============================================================================
#ifndef ACE_STACK_TRACE_H
#define ACE_STACK_TRACE_H
#include /**/ "ace/pre.h"
#include "ace/ACE_export.h"
#include "ace/Basic_Types.h"
# if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
# endif /* ACE_LACKS_PRAGMA_ONCE */
# ifndef ACE_STACK_TRACE_SYMBUFSIZ
# define ACE_STACK_TRACE_SYMBUFSIZ 4096
# endif
/**
* @class ACE_Stack_Trace
*
* @brief Encapsulate a string representation of a stack trace on supported platforms.
* Stack traces for code built with optimize=1 (or "Release" configs on Visual
* Studio) may be misleading (missng frames) due to inlining performed by the
* compiler, which is indepenent of the inline=0 / inline=1 build option and
* the __ACE_INLINE__ / ACE_NO_INLINE macros.
*/
class ACE_Export ACE_Stack_Trace
{
public:
/**
* @brief Grab a snapshot of the current stack trace and hold it for later use.
*
* @param starting_frame_offset offset into the array of frames to start printing; 0 is the platform-specific offset for the first frame, positive numbers give less frames, negative give more frames
* @param num_frames the number of stack frames to include (0 indicates platform-specific maximum)
*
*/
explicit ACE_Stack_Trace (ssize_t starting_frame_offset = 0, size_t num_frames = 0);
/**
* @brief Return buffer as a C-style string.
* @return C-style string with string representation of stack trace.
* @note Lifecycle of string follows lifecycle of ACE_Stack_Trace instance.
*/
const char* c_str() const;
static const size_t SYMBUFSIZ = ACE_STACK_TRACE_SYMBUFSIZ;
private:
char buf_[SYMBUFSIZ];
size_t buflen_;
static const char UNSUPPORTED[];
static const char UNABLE_TO_GET_TRACE[];
void generate_trace (ssize_t starting_frame_offset, size_t num_frames);
};
#include "ace/post.h"
#endif /* ACE_STACK_TRACE_H */
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