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      1 /* $NetBSD: defs.h,v 1.1 2007/03/31 21:05:57 agc Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1999-2005 Alistair Crooks.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. The name of the author may not be used to endorse or promote
     15  *    products derived from this software without specific prior written
     16  *    permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
     19  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
     22  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
     24  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     26  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     27  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     28  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 #ifndef DEFS_H_
     31 #define DEFS_H_
     32 
     33 #include <sys/types.h>
     34 #include <sys/param.h>
     35 
     36 #ifdef HAVE_STDINT_H
     37 #include <stdint.h>
     38 #endif
     39 
     40 #include <stdio.h>
     41 #include <stdlib.h>
     42 #include <string.h>
     43 
     44 #define NEWARRAY(type,ptr,size,where,action) do {			\
     45 	if ((ptr = (type *) calloc(sizeof(type), (unsigned)(size))) == NULL) { \
     46 		(void) fprintf(stderr, "%s: can't allocate %lu bytes\n", \
     47 			where, (unsigned long)(size * sizeof(type)));	\
     48 		action;							\
     49 	}								\
     50 } while( /* CONSTCOND */ 0)
     51 
     52 #define RENEW(type,ptr,size,where,action) do {				\
     53 	type *_newptr;							\
     54 	if ((_newptr = (type *) realloc(ptr, sizeof(type) * (size))) == NULL) { \
     55 		(void) fprintf(stderr, "%s: can't realloc %lu bytes\n",	\
     56 			where, (unsigned long)(size * sizeof(type)));	\
     57 		action;							\
     58 	} else {							\
     59 		ptr = _newptr;						\
     60 	}								\
     61 } while( /* CONSTCOND */ 0)
     62 
     63 #define NEW(type, ptr, where, action)	NEWARRAY(type, ptr, 1, where, action)
     64 
     65 #define FREE(ptr)	(void) free(ptr)
     66 
     67 #define ALLOC(type, v, size, c, init, incr, where, action) do {		\
     68 	uint32_t	_newsize = size;				\
     69 	if (size == 0) {						\
     70 		_newsize = init;					\
     71 		NEWARRAY(type, v, _newsize, where ": new", action);	\
     72 	} else if (c == size) {						\
     73 		_newsize = size + incr;					\
     74 		RENEW(type, v, _newsize, where ": renew", action);	\
     75 	}								\
     76 	size = _newsize;						\
     77 } while( /* CONSTCOND */ 0)
     78 
     79 /*		(void) memset(&v[size], 0x0, sizeof(type) * incr);	\*/
     80 
     81 #define DEFINE_ARRAY(name, type)					\
     82 typedef struct name {							\
     83 	uint32_t	c;						\
     84 	uint32_t	size;						\
     85 	type	       *v;						\
     86 } name
     87 
     88 #endif /* !DEFS_H_ */
     89