How to define "printf(...)" to "DEBUG(...)" in C/C++

When you make a program or programs, you need to check the program running condition.

In this reason, you want to use the debug message into the program.

In the debugging time you use the print put the logging messages and in the release time you don't want to use the logging messages.

When you use the macro "#define" how can you convert printf(char* format, ...) function to macro function?

As following,

// Multiple arguments

#define MSG_ERR(format, ...)    TRACE(ERROR, format, __VA_ARGS__)

#define MSG_WARN(format, ...)   TRACE(WARNING, format, __VA_ARGS__)

#define MSG_HIGH(format, ...)   TRACE(HIGH, format, __VA_ARGS__)

#define MSG_MID(format, ...)    TRACE(MIDDLE, format, __VA_ARGS__)

#define MSG_LOW(format, ...)    TRACE(LOW, format, __VA_ARGS__)

// Single argument

#define MSG_ERR(format)        TRACE(ERROR, format)

#define MSG_WARN(format)       TRACE(WARNING, format)

#define MSG_HIGH(format)       TRACE(HIGH, format)

#define MSG_MID(format)        TRACE(MIDDLE, format)

#define MSG_LOW(format)        TRACE(LOW, format)

And get more things, please refer to

 http://msdn.microsoft.com/en-us/library/ms177415(VS.80).aspx

Support for variadic macros was introduced in Visual C++ 2005.

About Bit Field in C/C++

In the C/C++, 

usually we use the "Bit Field" to optimize code or communicate with other process.

What is the Bit Filed?

I have attached "Example Code".

Example code

// Test Code, Bit Field

// ----------------------------------

{

 #define u8 unsigned char

 #define FILL_STRUCT1 u8:0; u8:8; u8:0;

 #define FILL_STRUCT2 u8:0; u8:8; u8:8; u8:0;

 #define FILL_STRUCT3 u8:0; u8:8; u8:8; u8:8; u8:0;

 typedef struct tag_SIMCommand {

 u8 Class;

 u8 Instruction;

 u8 P1;

 u8 P2;

 u8 P3;

 FILL_STRUCT3 // Bit Field

 u8 CData[8];

 } SIMCommandType;

 SIMCommandType SIMCommand;

 memset(&SIMCommand, 0xFF, sizeof(SIMCommandType));

 memset(&SIMCommand, 0x00, sizeof(SIMCommandType));

 // SELECT

 SIMCommand.Class = 0xA0;

 SIMCommand.Instruction = 0xA4;

 SIMCommand.P1 = 0x00;

 SIMCommand.P2 = 0x00;

 SIMCommand.P3 = 0x02;

 memset(SIMCommand.CData, 0xFF, sizeof(u8)*8);

}

// ----------------------------------

// Real Memory, Dump 1

// ----------------------------------

0012F3B0  A0 A4 00 00  

0012F3B4  02 00 00 00  

0012F3B8  FF FF FF FF  

0012F3BC  FF FF FF FF  

// ----------------------------------

// Test Code, Bit Field

// ----------------------------------

{

 #define u8 unsigned char

 #define FILL_STRUCT1 u8:0; u8:8; u8:0;

 #define FILL_STRUCT2 u8:0; u8:8; u8:8; u8:0;

 #define FILL_STRUCT3 u8:0; u8:8; u8:8; u8:8; u8:0;

 typedef struct tag_SIMCommand {

 u8 Class:4;

 u8 Instruction:2;

 u8 P1:1;

 FILL_STRUCT1

 u8 P2:4;

 FILL_STRUCT2

 u8 P3:1;

 FILL_STRUCT3 // Bit Field

 u8 CData[8];

 } SIMCommandType;

 SIMCommandType SIMCommand;

 memset(&SIMCommand, 0xFF, sizeof(SIMCommandType));

 memset(&SIMCommand, 0x00, sizeof(SIMCommandType));

 // SELECT

 SIMCommand.Class = 0x0F;

 SIMCommand.Instruction = 0x03;

 SIMCommand.P1 = 0x01;

 SIMCommand.P2 = 0x0F;

 SIMCommand.P3 = 0x01;

 memset(SIMCommand.CData, 0xFF, sizeof(u8)*8);

}

// ----------------------------------

// Real Memory, Dump 2

// ----------------------------------

0012F39C  7F 00 0F 00  

0012F3A0  00 01 00 00  

0012F3A4  00 FF FF FF  

0012F3A8  FF FF FF FF  

0012F3AC  FF CC CC CC  

// ----------------------------------

If you have any question? Please let me know :-)

Soap opera, TV Drama?

Nowadays I am watching TV series

Grey's Anatomy: Season 1, 2, 3, 4, and 5

 now, I am watching season 2.

Previous time, I watched

LOST: Season 1, 2, 3, 4, and 5

 I already watched season 1, 2, and 3.

HEROES: Season 1, 2, and 3

 I already watched season 1, 2.

and NOW, I'm watching Gray's Anatomy.

Previous time, I have watched 24, Numb3rs, ... 

When I was school student, I have watched many Americana's TV series,

for example MacGyver, Air Wolf, The Wonder Years and so on.

In the future, can I watch these TV series without caption?

Do you have a dream or a plan?

In the computer algorithm, there is "Divide and Conquer" i.e. when you solve the problem divide the problems and solve each of them. 

Today is the first working day of this year 2009.

Now, I am making this year's decision.

1. Increase family member.

2. Read English written books more than 10.

3. Join the on line lessons more than 10.

4. Upload blog more than 10 every month.

And end of this year, I will check them.

Let's start!

January 2nd, 2009.

Do you know CRT?

CRT is NOT Cathode Ray Tube.
As I know, CRT is C RunTime Library's CRT.

And crt0;
in the wikipedia,
crt0 (or crt0.o, gcrt0.o, mcrt0.o) is a set of execution startup routines (usually part of the C standard library), platform-dependent, required in order to compile using the gcc and other GNU tools.
crt stands for 'c runtime'

Read 2 books

인문의 숲에서 경영을 만나다 2, 정진홍
Think Innovation (씽크이노베이션) or イノベ-ションの本質, 노니카 이쿠지로, 가쓰미 아키라

Do you know, auto, tempo ...

In India, you can find some transfers which are auto, tempo, and ... rickshaw

You can find pictures of them, here