ialloc.c revision 2702 
1#ifndef lint
2#ifndef NOID
3static char	elsieid[] = "@(#)ialloc.c	8.21";
4#endif /* !defined NOID */
5#endif /* !defined lint */
6
7/*LINTLIBRARY*/
8
9#include "private.h"
10
11#ifdef MAL
12#define NULLMAL(x)	((x) == NULL || (x) == MAL)
13#endif /* defined MAL */
14#ifndef MAL
15#define NULLMAL(x)	((x) == NULL)
16#endif /* !defined MAL */
17
18#define nonzero(n)	(((n) == 0) ? 1 : (n))
19
20char *	icalloc P((int nelem, int elsize));
21char *	icatalloc P((char * old, const char * new));
22char *	icpyalloc P((const char * string));
23char *	imalloc P((int n));
24char *	irealloc P((char * pointer, int size));
25void	ifree P((char * pointer));
26
27char *
28imalloc(n)
29const int	n;
30{
31#ifdef MAL
32	register char *	result;
33
34	result = malloc((alloc_size_t) nonzero(n));
35	return NULLMAL(result) ? NULL : result;
36#endif /* defined MAL */
37#ifndef MAL
38	return malloc((alloc_size_t) nonzero(n));
39#endif /* !defined MAL */
40}
41
42char *
43icalloc(nelem, elsize)
44int	nelem;
45int	elsize;
46{
47	if (nelem == 0 || elsize == 0)
48		nelem = elsize = 1;
49	return calloc((alloc_size_t) nelem, (alloc_size_t) elsize);
50}
51
52char *
53irealloc(pointer, size)
54char * const	pointer;
55const int	size;
56{
57	if (NULLMAL(pointer))
58		return imalloc(size);
59	return realloc((genericptr_t) pointer, (alloc_size_t) nonzero(size));
60}
61
62char *
63icatalloc(old, new)
64char * const		old;
65const char * const	new;
66{
67	register char *	result;
68	register int	oldsize, newsize;
69
70	newsize = NULLMAL(new) ? 0 : strlen(new);
71	if (NULLMAL(old))
72		oldsize = 0;
73	else if (newsize == 0)
74		return old;
75	else	oldsize = strlen(old);
76	if ((result = irealloc(old, oldsize + newsize + 1)) != NULL)
77		if (!NULLMAL(new))
78			(void) strcpy(result + oldsize, new);
79	return result;
80}
81
82char *
83icpyalloc(string)
84const char * const	string;
85{
86	return icatalloc((char *) NULL, string);
87}
88
89void
90ifree(p)
91char * const	p;
92{
93	if (!NULLMAL(p))
94		(void) free(p);
95}
96
97void
98icfree(p)
99char * const	p;
100{
101	if (!NULLMAL(p))
102		(void) free(p);
103}
104