beh_debug

BEH_DEBUG(3)                      BHL functions                     BEH_DEBUG(3)



>> Included manual page: man1/alc_origin.1alc

NAME
       beh_debug - BEH structures displayer-debugger


SYNOPSIS
       void beh_debug (pnt, type)
       void *pnt;
       char *type;


PARAMETERS
       pnt       pointer of the structure to be displayed

       type      name of the structure to be displayed. type can be any of
                 "befig", "beout", "bereg", "bemsg", "bepor", "begen", "berin",
                 "bebus", "beaux", "bebux", "biabl", "binode", "beder",
                 "bequad", "abl", "integer", "long", "short", "character",
                 "ptype", "chain"


DESCRIPTION
       When called, beh_debug() displaies the structure pointed by pnt then,
       prints the line:

              COMMAND   >>

       and waits for a command being entered by the user. If pnt is a NULL
       pointer or type doesn´t represent a known structure, beh_debug() exits
       without making any action.


       To display the structure, beh_debug() prints a line per field. Fields
       containing immediate value (integer, character, string, ...) are
       displayed in the following form:

              name_of_the_field  :  value_of_the_field


       Fields containing a pointer are marked by the symbol ->. If the field
       contains a NULL pointer, the field is displayed as:

              -> name_of_the_field  :

       In the other case, beh_debug() prints :

              -> name_of_the_field  :  available


       Two kinds of command are accepted by the displayer.


       A command can be the name of a field containing a pointer. The command is
       accepted only if the pointer is not a NULL pointer (field displayed as
       "available"). When the debugger receives such a command, it first pushes
       the current structure on its stack then, displaies the structure pointed
       by the named field.


       The second kind of commands are predefined commands :


              _exit     to exit from the debugger

              _up       to return to the previous structure

              _stop     to put a stop mark on the current structure

              _top      to return to the first structure (pointed by pnt)

              _back     to return to the last structure marked with a stop mark

              _save     to save the current structure in a static table. At most
                        10 structures may be saved. (example : "_save 1" saves
                        the current structure in the entry number ! of the
                        table)

              _jump     to jump to a saved structure (example : "_jump 1"
                        dislpaies the etructure save in the entry number 1 of
                        the table).

              _display  displaies a field under a given format. (example :
                        "_display next integer" displaies the field named next
                        as an integer).


       In addition to these commands, the command . (dot) can be used to repete
       the last command.


EXAMPLE
       #include <beh109.h>
       struct beout *beout_pnt;

       beh_debug (beout_pnt , "beout");


NOTES
       beh_debug() uses an internal stack. The message "stack overflow" is
       printed if too many structures have been pushed on the stack.


SEE ALSO
       beh(3)



>> Included manual page: man1/alc_bug_report.1alc




ASIM/LIP6                        October 1, 1997                    BEH_DEBUG(3)