namealloc - hash table for strings
This software belongs to the ALLIANCE CAD system from the CAO-VLSI team at
ASIM/LIP6/UPMC laboratory.
LIP6/ASIM
University P. et M. Curie
4, place Jussieu
75252 PARIS Cedex 05
FRANCE
Fax : {33/0} 1.44.27.62.86
E-mail support : alliance-support@asim.lip6.fr
#include mutnnn.h"
char *namealloc(inputname)
char *inputname;
The namealloc function creates a dictionnary of names in mbk. It warranties
equality on characters string if the pointers to these strings are
equal, at strcmp(3)
meaning. This means also that there is a single memory
address for a given string.
The case of the letters do not matter. All names are changed to lower case
before beeing introduced in the symbol table. This is needed because most
of the file format do not check case.
namealloc is used by all mbk utility function using names, so its use
should be needed only when directly filling or modifing the structure, or
when having to compare an external string to mbk internal ones. This
should speed up string comparisons.
One shall never modify the contains of a string pointed to by a result of
namealloc, since all the field that points to this name would have there
values modified, and that there is no chance that the new hash code will
be the same as the old one, so pointer comparison would be meaningless.
All string used by namealloc are constants string, and therefore must be
left alone.
namealloc returns a string pointer. If the inputname is already in the hash table, then its internal pointer is returned, else a new entry is created, and then the new pointer returned.
#include mutnnn.h"
#include mlonnn.h"
lofig_list *find_fig(name)
char *name;
{
lofig_list *p;
name = namealloc(name)
;
for (p = HEAD_LOFIG; p; p = p->NEXT)
if (p->NAME == name) /* pointer equality */
return p;
return NULL;
}
namealloc can be used only after a call to mbkenv(3) .
mbk(1) .
This tool is under development at the ASIM/LIP6/UPMC laboratory, cao-vlsi
research team.
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If you find bugs, please fill-in the form at
http://asim.lip6.fr/alliance/support/bug-report/
Thanks for doing this.