зеркало из https://github.com/github/putty.git
57 строки
1.5 KiB
C
57 строки
1.5 KiB
C
/*
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* malloc.h: safe wrappers around malloc, realloc, free, strdup
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*/
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#ifndef UMLWRAP_MALLOC_H
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#define UMLWRAP_MALLOC_H
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#include <stddef.h>
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/*
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* smalloc should guarantee to return a useful pointer - Halibut
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* can do nothing except die when it's out of memory anyway.
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*/
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void *smalloc(size_t size);
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/*
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* srealloc should guaranteeably be able to realloc NULL
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*/
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void *srealloc(void *p, size_t size);
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/*
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* sfree should guaranteeably deal gracefully with freeing NULL
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*/
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void sfree(void *p);
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/*
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* dupstr is like strdup, but with the never-return-NULL property
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* of smalloc (and also reliably defined in all environments :-)
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*/
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char *dupstr(const char *s);
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/*
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* snew allocates one instance of a given type, and casts the
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* result so as to type-check that you're assigning it to the
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* right kind of pointer. Protects against allocation bugs
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* involving allocating the wrong size of thing.
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*/
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#define snew(type) \
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( (type *) smalloc (sizeof (type)) )
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/*
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* snewn allocates n instances of a given type, for arrays.
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*/
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#define snewn(number, type) \
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( (type *) smalloc ((number) * sizeof (type)) )
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/*
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* sresize wraps realloc so that you specify the new number of
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* elements and the type of the element, with the same type-
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* checking advantages. Also type-checks the input pointer.
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*/
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#define sresize(array, number, type) \
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( (void)sizeof((array)-(type *)0), \
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(type *) srealloc ((array), (number) * sizeof (type)) )
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#endif /* UMLWRAP_MALLOC_H */
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