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Diffstat (limited to 'dmake/dbug/dbug/dbug.h')
| -rw-r--r-- | dmake/dbug/dbug/dbug.h | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/dmake/dbug/dbug/dbug.h b/dmake/dbug/dbug/dbug.h new file mode 100644 index 000000000000..0f171e0d349f --- /dev/null +++ b/dmake/dbug/dbug/dbug.h @@ -0,0 +1,164 @@ +/****************************************************************************** + * * + * 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 1.11 9/5/87 + * + * 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 */ +# 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_MALLOC(a1) +# define DBUG_RETURN(a1) return(a1) +# define DBUG_VOID_RETURN return +# define DBUG_EXECUTE(keyword,a1) +# define DBUG_PRINT(keyword,arglist) +# define DBUG_2(keyword,format) /* Obsolete */ +# define DBUG_3(keyword,format,a1) /* Obsolete */ +# define DBUG_4(keyword,format,a1,a2) /* Obsolete */ +# define DBUG_5(keyword,format,a1,a2,a3) /* Obsolete */ +# define DBUG_PUSH(a1) +# define DBUG_POP() +# define DBUG_PROCESS(a1) +# define DBUG_FILE (stderr) +# define DBUG_SETJMP setjmp +# define DBUG_LONGJMP longjmp +# else +# define DBUG_ENTER(a) \ + auto char *_db_func_, *_db_file_; \ + int _db_level_; \ + _db_enter_ (a,__FILE__,__LINE__,&_db_func_,&_db_file_,&_db_level_) +# define DBUG_MALLOC(a) \ + auto char *_db_func_, *_db_file_; \ + int _db_level_; \ + malloc_init();\ + _db_enter_ (a,__FILE__,__LINE__,&_db_func_,&_db_file_,&_db_level_) +# 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_2(keyword,format) \ + DBUG_PRINT(keyword,(format)) /* Obsolete */ +# define DBUG_3(keyword,format,a1) \ + DBUG_PRINT(keyword,(format,a1)) /* Obsolete */ +# define DBUG_4(keyword,format,a1,a2) \ + DBUG_PRINT(keyword,(format,a1,a2)) /* Obsolete */ +# define DBUG_5(keyword,format,a1,a2,a3) \ + DBUG_PRINT(keyword,(format,a1,a2,a3)) /* Obsolete */ +# 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)) +# endif + |