/* 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., 51 Franklin Street, Fifth Floor, Boston,
   MA 02111-1301, 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