text: /* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
     
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
     
     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Library General Public License for more details.
     
     You should have received a copy of the GNU Library General Public
     License along with this library; if not, write to the Free
     Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
     MA 02111-1307, USA */
  
  #ifndef _dbug_h
  #define _dbug_h
  #ifdef	__cplusplus
  extern "C" {
  #endif
  
  /* unsupported macros (used by async) */
  #define DBUG_SWAP_CODE_STATE(a) {}
  #define DBUG_FREE_CODE_STATE(a) {}
  
  #if !defined(DBUG_OFF) && !defined(_lint)
  
  struct _db_stack_frame_ {
    const char *func;      /* function name of the previous stack frame       */
    const char *file;      /* filename of the function of previous frame      */
    uint level;            /* this nesting level, highest bit enables tracing */
    struct _db_stack_frame_ *prev; /* pointer to the previous frame */
  };
  
  struct  _db_code_state_;
  extern  my_bool _dbug_on_;
  extern  my_bool _db_keyword_(struct _db_code_state_ *, const char *, int);
  extern  int _db_explain_(struct _db_code_state_ *cs, char *buf, size_t len);
  extern  int _db_explain_init_(char *buf, size_t len);
  extern	int _db_is_pushed_(void);
  extern  void _db_setjmp_(void);
  extern  void _db_longjmp_(void);
  extern  void _db_process_(const char *name);
  extern  void _db_push_(const char *control);
  extern  void _db_pop_(void);
  extern  void _db_set_(const char *control);
  extern  void _db_set_init_(const char *control);
  extern void _db_enter_(const char *_func_, const char *_file_, uint _line_,
                         struct _db_stack_frame_ *_stack_frame_);
  extern  void _db_return_(uint _line_, struct _db_stack_frame_ *_stack_frame_);
  extern  void _db_pargs_(uint _line_,const char *keyword);
  extern	void _db_doprnt_ _VARARGS((const char *format,...));
  extern  void _db_dump_(uint _line_,const char *keyword,
                         const unsigned char *memory, size_t length);
  extern  void _db_end_(void);
  extern  void _db_lock_file_(void);
  extern  void _db_unlock_file_(void);
  extern  FILE *_db_fp_(void);
  extern  void _db_flush_();
  extern  const char* _db_get_func_(void);
  /*
  #define DBUG_ENTER(a) struct _db_stack_frame_ _db_stack_frame_; \
          _db_enter_ (a,__FILE__,__LINE__,&_db_stack_frame_)
  #define DBUG_LEAVE \
  	(_db_return_ (__LINE__, &_db_func_, &_db_file_, &_db_level_))
  #define DBUG_RETURN(a1) do {DBUG_LEAVE; return(a1);} while(0)
  #define DBUG_VOID_RETURN {DBUG_LEAVE; return;}
  #define DBUG_END() _db_end_ ()
  #define DBUG_EXECUTE(keyword,a1) \
  	{if (_db_on_) {if (_db_keyword_ (keyword)) { a1 }}}
  #define DBUG_PRINT(keyword,arglist) \
  	{if (_db_on_) {_db_pargs_(__LINE__,keyword); _db_doprnt_ arglist;}}
  #define DBUG_PUSH(a1) _db_push_ (a1)
  #define DBUG_POP() _db_pop_ ()
  #define DBUG_PROCESS(a1) (_db_process_ = a1)
  #define DBUG_FILE (_db_fp_)
  #define DBUG_SETJMP(a1) (_db_setjmp_ (), setjmp (a1))
  #define DBUG_LONGJMP(a1,a2) (_db_longjmp_ (), longjmp (a1, a2))
  #define DBUG_DUMP(keyword,a1,a2)\
  	{if (_db_on_) {_db_dump_(__LINE__,keyword,a1,a2);}}
  #define DBUG_IN_USE (_db_fp_ && _db_fp_ != stderr)
  #define DEBUGGER_OFF _no_db_=1;_db_on_=0;
  #define DEBUGGER_ON  _no_db_=0
  #define DBUG_LOCK_FILE { _db_lock_file(); }
  #define DBUG_UNLOCK_FILE { _db_unlock_file(); }
  #define DBUG_ASSERT(A) assert(A) */
  #define DBUG_ENTER(a) struct _db_stack_frame_ _db_stack_frame_; \
          _db_enter_ (a,__FILE__,__LINE__,&_db_stack_frame_)
  #define DBUG_LEAVE _db_return_ (__LINE__, &_db_stack_frame_)
  #define DBUG_RETURN(a1) do {DBUG_LEAVE; return(a1);} while(0)
  #define DBUG_VOID_RETURN do {DBUG_LEAVE; return;} while(0)
  #define DBUG_EXECUTE(keyword,a1) \
          do {if (_db_keyword_(0, (keyword), 0)) { a1 }} while(0)
  #define DBUG_EXECUTE_IF(keyword,a1) \
          do {if (_db_keyword_(0, (keyword), 1)) { a1 }} while(0)
  #define DBUG_EVALUATE(keyword,a1,a2) \
          (_db_keyword_(0,(keyword), 0) ? (a1) : (a2))
  #define DBUG_EVALUATE_IF(keyword,a1,a2) \
          (_db_keyword_(0,(keyword), 1) ? (a1) : (a2))
  #define DBUG_PRINT(keyword,arglist) \
          do {_db_pargs_(__LINE__,keyword); _db_doprnt_ arglist;} while(0)
  #define DBUG_PUSH(a1) _db_push_ (a1)
  #define DBUG_POP() _db_pop_ ()
  #define DBUG_SET(a1) _db_set_ (a1)
  #define DBUG_SET_INITIAL(a1) _db_set_init_ (a1)
  #define DBUG_PROCESS(a1) _db_process_(a1)
  #define DBUG_FILE _db_fp_()
  #define DBUG_SETJMP(a1) (_db_setjmp_ (), setjmp (a1))
  #define DBUG_LONGJMP(a1,a2) (_db_longjmp_ (), longjmp (a1, a2))
  #define DBUG_DUMP(keyword,a1,a2) _db_dump_(__LINE__,keyword,a1,a2)
  #define DBUG_END()  _db_end_ ()
  #define DBUG_LOCK_FILE _db_lock_file_()
  #define DBUG_UNLOCK_FILE _db_unlock_file_()
  #define DBUG_ASSERT(A) assert(A)
  #define DBUG_EXPLAIN(buf,len) _db_explain_(0, (buf),(len))
  #define DBUG_EXPLAIN_INITIAL(buf,len) _db_explain_init_((buf),(len))
  #define DEBUGGER_OFF                    do { _dbug_on_= 0; } while(0)
  #define DEBUGGER_ON                     do { _dbug_on_= 1; } while(0)
  #ifndef _WIN32
  #define DBUG_ABORT()                    (_db_flush_(), abort())
  #else
  #define DBUG_ABORT()                    (_db_flush_(), exit(3))
  #endif
  
  #else						/* No debugger */
  #define DBUG_ENTER(a1)
  #define DBUG_END() {}
  #define DBUG_RETURN(a1) return(a1)
  #define DBUG_VOID_RETURN return
  #define DBUG_EXECUTE(keyword,a1) {}
  #define DBUG_PRINT(keyword,arglist) {}
  #define DBUG_PUSH(a1) {}
  #define DBUG_POP() {}
  #define DBUG_PROCESS(a1) {}
  #define DBUG_FILE (stderr)
  #define DBUG_SETJMP setjmp
  #define DBUG_LONGJMP longjmp
  #define DBUG_DUMP(keyword,a1,a2) {}
  #define DBUG_IN_USE 0
  #define DEBUGGER_OFF
  #define DEBUGGER_ON
  #define DBUG_LOCK_FILE
  #define DBUG_UNLOCK_FILE
  #define DBUG_ASSERT(A) {}
  #endif
  #ifdef	__cplusplus
  }
  #endif
  #endif
  