Logo Search packages:      
Sourcecode: dash version File versions

memalloc.h

/*    $NetBSD: memalloc.h,v 1.13 2003/01/22 20:36:04 dsl Exp $    */

/*-
 * Copyright (c) 1991, 1993
 *    The Regents of the University of California.  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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    This product includes software developed by the University of
 *    California, Berkeley and its contributors.
 * 4. 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;
      struct stackmark *marknext;
};


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

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


static inline char *_STPUTC(char 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))

Generated by  Doxygen 1.6.0   Back to index