#define DEBUG_EVERYTIME_BEGIN(b) \
do { \
  static bool b = 0; \
  if (b) { 

#define DEBUG_EVERYTIME_END() \
  }\
} while(0)

#define DEBUG_ONETIME_BEGIN(b) \
do { \
  static bool b = 0; \
  if (b) { 

#define DEBUG_ONETIME_END() \
  }\
  b = 0; \
} while(0)

DEBUG_ONETIME_BEGIN(b);
doSomeDebug();
DEBUG_ONETIME_END();