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Diffstat (limited to 'dbug/dbug_long.h')
| -rw-r--r-- | dbug/dbug_long.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/dbug/dbug_long.h b/dbug/dbug_long.h new file mode 100644 index 00000000..e77218b2 --- /dev/null +++ b/dbug/dbug_long.h @@ -0,0 +1,144 @@ +#error This file is not used in MySQL - see ../include/my_dbug.h instead +/****************************************************************************** + * * + * N O T I C E * + * * + * Copyright Abandoned, 1987, Fred Fish * + * * + * * + * This previously copyrighted work has been placed into the public * + * domain by the author and may be freely used for any purpose, * + * private or commercial. * + * * + * Because of the number of inquiries I was receiving about the use * + * of this product in commercially developed works I have decided to * + * simply make it public domain to further its unrestricted use. I * + * specifically would be most happy to see this material become a * + * part of the standard Unix distributions by AT&T and the Berkeley * + * Computer Science Research Group, and a standard part of the GNU * + * system from the Free Software Foundation. * + * * + * I would appreciate it, as a courtesy, if this notice is left in * + * all copies and derivative works. Thank you. * + * * + * The author makes no warranty of any kind with respect to this * + * product and explicitly disclaims any implied warranties of mer- * + * chantability or fitness for any particular purpose. * + * * + ****************************************************************************** + */ + +/* + * FILE + * + * dbug.h user include file for programs using the dbug package + * + * SYNOPSIS + * + * #include <local/dbug.h> + * + * SCCS ID + * + * @(#)dbug.h 1.13 7/17/89 + * + * DESCRIPTION + * + * Programs which use the dbug package must include this file. + * It contains the appropriate macros to call support routines + * in the dbug runtime library. + * + * To disable compilation of the macro expansions define the + * preprocessor symbol "DBUG_OFF". This will result in null + * macros expansions so that the resulting code will be smaller + * and faster. (The difference may be smaller than you think + * so this step is recommended only when absolutely necessary). + * In general, tradeoffs between space and efficiency are + * decided in favor of efficiency since space is seldom a + * problem on the new machines). + * + * All externally visible symbol names follow the pattern + * "_db_xxx..xx_" to minimize the possibility of a dbug package + * symbol colliding with a user defined symbol. + * + * The DBUG_<N> style macros are obsolete and should not be used + * in new code. Macros to map them to instances of DBUG_PRINT + * are provided for compatibility with older code. They may go + * away completely in subsequent releases. + * + * AUTHOR + * + * Fred Fish + * (Currently employed by Motorola Computer Division, Tempe, Az.) + * hao!noao!mcdsun!fnf + * (602) 438-3614 + * + */ + +/* + * Internally used dbug variables which must be global. + */ + +#ifndef DBUG_OFF + extern int _db_on_; /* TRUE if debug currently enabled */ + extern FILE *_db_fp_; /* Current debug output stream */ + extern char *_db_process_; /* Name of current process */ + extern int _db_keyword_ (); /* Accept/reject keyword */ + extern void _db_push_ (); /* Push state, set up new state */ + extern void _db_pop_ (); /* Pop previous debug state */ + extern void _db_enter_ (); /* New user function entered */ + extern void _db_return_ (); /* User function return */ + extern void _db_pargs_ (); /* Remember args for line */ + extern void _db_doprnt_ (); /* Print debug output */ + extern void _db_setjmp_ (); /* Save debugger environment */ + extern void _db_longjmp_ (); /* Restore debugger environment */ + extern void _db_dump_(); /* Dump memory */ +# endif + + +/* + * These macros provide a user interface into functions in the + * dbug runtime support library. They isolate users from changes + * in the MACROS and/or runtime support. + * + * The symbols "__LINE__" and "__FILE__" are expanded by the + * preprocessor to the current source file line number and file + * name respectively. + * + * WARNING --- Because the DBUG_ENTER macro allocates space on + * the user function's stack, it must precede any executable + * statements in the user function. + * + */ + +# ifdef DBUG_OFF +# define DBUG_ENTER(a1) +# 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_DUMP(keyword,a1) +# else +# define DBUG_ENTER(a) \ + auto char *_db_func_; auto char *_db_file_; auto int _db_level_; \ + auto char **_db_framep_; \ + _db_enter_ (a,__FILE__,__LINE__,&_db_func_,&_db_file_,&_db_level_, \ + &_db_framep_) +# define DBUG_LEAVE \ + (_db_return_ (__LINE__, &_db_func_, &_db_file_, &_db_level_)) +# define DBUG_RETURN(a1) return (DBUG_LEAVE, (a1)) +/* define DBUG_RETURN(a1) {DBUG_LEAVE; return(a1);} Alternate form */ +# define DBUG_VOID_RETURN {DBUG_LEAVE; return;} +# 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_DUMP(keyword,a1,a2) _db_dump_(__LINE__,keyword,a1,a2) +# endif |