Digg
del.icio.us
Newsvine
Facebook
Google
LinkedIn
MySpace
Reddit
Slashdot
StumbleUpon
Technorati
Twitter
Windows Live
YahooBuzz
FriendFeedMFC TRACE Macro for Console Applications
Posted
by Thomas Rizos
on February 21st, 2001
This example will post Messages to the tracer built-in with Visual Studio IDE, TraceEx Also includes source file and code line which can be used as shortcut when double clicked on.
/* Trace.h */ #ifndef __TRACE_H__ #define __TRACE_H__ #include <crtdbg.h> #include <stdarg.h> #include <stdio.h> #include <string.h> #ifdef _DEBUG #define TRACEMAXSTRING 1024 char szBuffer[TRACEMAXSTRING]; inline void Trace(const char* format,...) { va_list args; va_start(args,format); int nBuf; nBuf = _vsnprintf(szBuffer, TRACEMAXSTRING, format, args); va_end(args); _RPT0(_CRT_WARN,szBuffer); } #define TraceEx _snprintf(szBuffer,TRACEMAXSTRING,"%s(%d): ", \ &strrchr(__FILE__,'\\')[1],__LINE__); \ _RPT0(_CRT_WARN,szBuffer); \ Trace #else inline void Trace(0); inline void TraceEx(0); #endif #endif // __TRACE_H__
Example
Here's all you have to do to use this macro!
#include "trace.h"
int main(void)
{
TraceEx("Somethings wrongs here %d\n",1)
}
Running this application will result in the following output:
main.cpp(5): Somethings wrong here 1Other features that could be included are ThreadID, ProcessID etc. fun debugging.
Comments
This macro include any dangurous case.
Posted by Legacy on 07/27/2003 12:00amOriginally posted by: tae young park
This macro include any dangurous case.
If this macro is used bellow example.
example:
if( ... ) {
} else
TraceEx( "trace sample.." );
This example code will be expanded
if( ... ) {
} else
_snprintf(szBuffer, TRACEMAXSTRING, "%s(%d" : ",
&strchr(__FILE__,'\\')[1], __LINE__);
_RPT0(_CRT_WARN,szBuffer);
Trace("trace sample..");
so last two line will be executed in any case.
therefore this macro must be used with a parenthesis.
if( ... ) {
} else
{
TraceEx( "trace sample..");
}
Be carefull !
-
ReplyParenthese
Posted by jjwalters on 02/17/2005 05:38pmWouldn't it be more sensible to modify the macro slightly to allow for your if( ... ) { } else TraceEx( "trace sample.." ); text? Put the parentheses around the macro #define TraceEx {_snprintf(szBuffer,TRACEMAXSTRING,"%s(%d): ", \ &strrchr(__FILE__,'\\')[1],__LINE__); \ _RPT0(_CRT_WARN,szBuffer); \ Trace}ReplyUseful (-_-)
Posted by Legacy on 05/13/2003 12:00amOriginally posted by: Janus.K
z
Reply
Release build errors
Posted by Legacy on 02/01/2002 12:00amOriginally posted by: suma
I get the following error message on release build
error C2182: 'Trace' : illegal use of type 'void'
error C2433: 'Trace' : 'inline' not permitted on data declarations
error C2182: 'TraceEx' : illegal use of type 'void'
error C2433: 'TraceEx' : 'inline' not permitted on data declarations
These error corresponds to the following lines
#define TraceEx _snprintf(szBuffer,TRACEMAXSTRING,"%s(%d): ", \
&strrchr(__FILE__,'\\')[1],__LINE__); \
_RPT0(_CRT_WARN,szBuffer); \
Trace
#else
inline void Trace(0);
inline void TraceEx(0);
#endif
Reply
Good job ;-) !!!
Posted by Legacy on 10/23/2001 12:00amOriginally posted by: Hartmut
This was what I really needed. Well done !!!
Reply