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Subject: Re: malloc() as a user defined function
Message-ID: <1992Oct9.233039.16829@montagar.com>
From: <davidc@montagar.com>
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Date: 9 Oct 92 23:30:38 GMT
References: <Bvv6pH.Gzy@cs.psu.edu>
Organization: Montagar Software Concepts, Plano TX
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In article <Bvv6pH.Gzy@cs.psu.edu>, ytang@red.crayola.cs.psu.edu (Yuan-Ling
 Tang) writes:
>
> Hi netters:
>
>     In programming on dynamic memory allocation, I prefer doing check on
>     every malloc(). I.e.:
>     ...
>     However another problem arises, what if I have many distinct types
>     of memory space to allocate? That is, I can't use the same type in
>     calling my_malloc(). So how can I pass a type to a function?

        Maybe something like this?

#define TALLOC(x)       {int p ; ((p = malloc(sizeof(x)) == NULL) ? \
                                        {perror("Malloc") ; exit(errno) } : \
                                        p ; }

        The sizeof() will resolve the type into the required number of bytes,
such that

        bptr = TALLOC(struct bogus) ;

        will allocate the correct size buffer, while performing the check
(I hope, I haven't tested that macro...)

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
David L. Cathey                         |INET: davidc@montagar.com
Montagar Software Concepts              |UUCP: ...!montagar!davidc
P. O. Box 260772, Plano TX  75026-0772  |Fone: (214)-618-2117