usr/dash/memalloc.h

/*-
 * Copyright (c) 1991, 1993
 *	The Regents of the University of California.  All rights reserved.
 * Copyright (c) 1997-2005
 *	Herbert Xu <herbert@gondor.apana.org.au>.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Kenneth Almquist.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)memalloc.h	8.2 (Berkeley) 5/4/95
 */

#include <stddef.h>

struct stackmark {
	struct stack_block *stackp;
	char *stacknxt;
	size_t stacknleft;
};


extern char *stacknxt;
extern size_t stacknleft;
extern char *sstrend;

pointer ckmalloc(size_t);
pointer ckrealloc(pointer, size_t);
char *savestr(const char *);
pointer stalloc(size_t);
void stunalloc(pointer);
void pushstackmark(struct stackmark *mark, size_t len);
void setstackmark(struct stackmark *);
void popstackmark(struct stackmark *);
void growstackblock(void);
void *growstackstr(void);
char *makestrspace(size_t, char *);
char *stnputs(const char *, size_t, char *);
char *stputs(const char *, char *);


static inline void grabstackblock(size_t len)
{
	stalloc(len);
}

static inline char *_STPUTC(int c, char *p) {
	if (p == sstrend)
		p = growstackstr();
	*p++ = c;
	return p;
}

#define stackblock() ((void *)stacknxt)
#define stackblocksize() stacknleft
#define STARTSTACKSTR(p) ((p) = stackblock())
#define STPUTC(c, p) ((p) = _STPUTC((c), (p)))
#define CHECKSTRSPACE(n, p) \
	({ \
		char *q = (p); \
		size_t l = (n); \
		size_t m = sstrend - q; \
		if (l > m) \
			(p) = makestrspace(l, q); \
		0; \
	})
#define USTPUTC(c, p)	(*p++ = (c))
#define STACKSTRNUL(p)	((p) == sstrend? (p = growstackstr(), *p = '\0') : (*p = '\0'))
#define STUNPUTC(p)	(--p)
#define STTOPC(p)	p[-1]
#define STADJUST(amount, p)	(p += (amount))

#define grabstackstr(p)	stalloc((char *)(p) - (char *)stackblock())
#define ungrabstackstr(s, p) stunalloc((s))
#define stackstrend() ((void *)sstrend)

#define ckfree(p)	free((pointer)(p))
1	/*-
2	* Copyright (c) 1991, 1993
3	* The Regents of the University of California. All rights reserved.
4	* Copyright (c) 1997-2005
5	* Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved.
6	*
7	* This code is derived from software contributed to Berkeley by
8	* Kenneth Almquist.
9	*
10	* Redistribution and use in source and binary forms, with or without
11	* modification, are permitted provided that the following conditions
12	* are met:
13	* 1. Redistributions of source code must retain the above copyright
14	* notice, this list of conditions and the following disclaimer.
15	* 2. Redistributions in binary form must reproduce the above copyright
16	* notice, this list of conditions and the following disclaimer in the
17	* documentation and/or other materials provided with the distribution.
18	* 3. Neither the name of the University nor the names of its contributors
19	* may be used to endorse or promote products derived from this software
20	* without specific prior written permission.
21	*
22	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32	* SUCH DAMAGE.
33	*
34	* @(#)memalloc.h 8.2 (Berkeley) 5/4/95
35	*/
36
37	#include <stddef.h>
38
39	struct stackmark {
40	struct stack_block *stackp;
41	char *stacknxt;
42	size_t stacknleft;
43	};
44
45
46	extern char *stacknxt;
47	extern size_t stacknleft;
48	extern char *sstrend;
49
50	pointer ckmalloc(size_t);
51	pointer ckrealloc(pointer, size_t);
52	char savestr(const char );
53	pointer stalloc(size_t);
54	void stunalloc(pointer);
55	void pushstackmark(struct stackmark *mark, size_t len);
56	void setstackmark(struct stackmark *);
57	void popstackmark(struct stackmark *);
58	void growstackblock(void);
59	void *growstackstr(void);
60	char makestrspace(size_t, char );
61	char stnputs(const char , size_t, char *);
62	char stputs(const char , char *);
63
64
65	static inline void grabstackblock(size_t len)
66	{
67	stalloc(len);
68	}
69
70	static inline char _STPUTC(int c, char p) {
71	if (p == sstrend)
72	p = growstackstr();
73	*p++ = c;
74	return p;
75	}
76
77	#define stackblock() ((void *)stacknxt)
78	#define stackblocksize() stacknleft
79	#define STARTSTACKSTR(p) ((p) = stackblock())
80	#define STPUTC(c, p) ((p) = _STPUTC((c), (p)))
81	#define CHECKSTRSPACE(n, p) \
82	({ \
83	char *q = (p); \
84	size_t l = (n); \
85	size_t m = sstrend - q; \
86	if (l > m) \
87	(p) = makestrspace(l, q); \
88	0; \
89	})
90	#define USTPUTC(c, p) (*p++ = (c))
91	#define STACKSTRNUL(p) ((p) == sstrend? (p = growstackstr(), p = '\0') : (p = '\0'))
92	#define STUNPUTC(p) (--p)
93	#define STTOPC(p) p[-1]
94	#define STADJUST(amount, p) (p += (amount))
95
96	#define grabstackstr(p) stalloc((char )(p) - (char )stackblock())
97	#define ungrabstackstr(s, p) stunalloc((s))
98	#define stackstrend() ((void *)sstrend)
99
100	#define ckfree(p) free((pointer)(p))