From d03a6a27c7fcdca70db417c15cdccc0185b1efef Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sun, 30 Dec 2012 22:42:46 +0100 Subject: add utils.c, containing a calloc-like function to allocate multiple chunks with different sizes in one block and return pointers Signed-off-by: Felix Fietkau --- utils.h | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 utils.h (limited to 'utils.h') diff --git a/utils.h b/utils.h new file mode 100644 index 0000000..e56998d --- /dev/null +++ b/utils.h @@ -0,0 +1,37 @@ +/* + * utils - misc libubox utility functions + * + * Copyright (C) 2012 Felix Fietkau + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef __LIBUBOX_UTILS_H +#define __LIBUBOX_UTILS_H + +#include + +/* + * calloc_a(size_t len, [void **addr, size_t len,...], NULL) + * + * allocate a block of memory big enough to hold multiple aligned objects. + * the pointer to the full object (starting with the first chunk) is returned, + * all other pointers are stored in the locations behind extra addr arguments. + * the last argument needs to be a NULL pointer + */ + +#define calloc_a(len, ...) __calloc_a(len, ##__VA_ARGS__) + +void *__calloc_a(size_t len, ...); + +#endif -- cgit v1.2.3