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/* -*- C++ -*- */
// $Id$
// ============================================================================
//
// = LIBRARY
// ace
//
// = FILENAME
// Trace.h
//
// = AUTHOR
// Douglas C. Schmidt <schmidt@cs.wustl.edu>
//
// ============================================================================
#ifndef ACE_TRACE_H
#define ACE_TRACE_H
#include "ace/pre.h"
#include "ace/OS.h"
class ACE_Export ACE_Trace
{
// = TITLE
// A C++ trace facility that keeps track of which methods are
// entered and exited.
//
// = DESCRIPTION
// This class uses C++ constructors and destructors to automate
// the ACE_Trace nesting. In addition, thread-specific storage
// is used to enable multiple threads to work correctly.
public:
// = Initialization and termination methods.
ACE_Trace (const ASYS_TCHAR *n,
int line = 0,
const ASYS_TCHAR *file = ASYS_TEXT (""));
// Perform the first part of the trace, which prints out the string
// N, the LINE, and the ACE_FILE as the function is entered.
~ACE_Trace (void);
// Perform the second part of the trace, which prints out the NAME
// as the function is exited.
// = Control the tracing level.
static int is_tracing(void);
// Determine if tracing is enabled (return == 1) or not (== 0)
static void start_tracing (void);
// Enable the tracing facility.
static void stop_tracing (void);
// Disable the tracing facility.
static void set_nesting_indent (int indent);
// Change the nesting indentation level.
void dump (void) const;
// Dump the state of an object.
private:
// Keeps track of how deeply the call stack is nested (this is
// maintained in thread-specific storage to ensure correctness in
// multiple threads of control.
const ASYS_TCHAR *name_;
// Name of the method we are in.
static int nesting_indent_;
// Keeps track of how far to indent per trace call.
static int enable_tracing_;
// Is tracing enabled?
// Default values.
enum
{
DEFAULT_INDENT = 3,
DEFAULT_TRACING = 1
};
};
#include "ace/post.h"
#endif /* ACE_TRACE_H */
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