ip_malloc.h

来自「tinyos-2.x.rar」· C头文件 代码 · 共 50 行

/*
 * "Copyright (c) 2008, 2009 The Regents of the University  of California.
 * All rights reserved."
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose, without fee, and without written agreement is
 * hereby granted, provided that the above copyright notice, the following
 * two paragraphs and the author appear in all copies of this software.
 *
 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
 * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
 * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS."
 *
 */
#ifndef NO_IP_MALLOC
#ifndef IP_MALLOC_H_
#define IP_MALLOC_H_

#include <stdint.h>
#include <blip-platform.h>

// align on this number of byte boundarie#s
#define IP_MALLOC_ALIGN   2
#define IP_MALLOC_LEN     0x0fff
#define IP_MALLOC_FLAGS   0x7000
#define IP_MALLOC_INUSE   0x8000

extern uint8_t heap[IP_MALLOC_HEAP_SIZE];
typedef uint16_t bndrt_t;

void ip_malloc_init();
void *ip_malloc(uint16_t sz);
void ip_free(void *ptr);
uint16_t ip_malloc_freespace();

#ifndef PC
#define malloc(X) ip_malloc(X)
#define free(X)   ip_free(X)
#endif

#endif
#endif