d_mem.h

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/*
 * "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
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#ifndef D_MEM_H_
#define D_MEM_H_

#include <stdint.h>
#define D_MEM_HEAP_SIZE 4095

// align on this number of byte boundarie#s
#define D_MEM_ALIGN   2
#define D_MEM_LEN     0x0fff
#define D_MEM_INUSE   0x8000

extern uint8_t heap[D_MEM_HEAP_SIZE];
typedef uint16_t bndrt_t;

void d_malloc_init();
void* d_malloc(uint16_t sz);
void d_free(void *ptr);
uint16_t d_malloc_freespace();

void* d_realloc(void* ptr, uint16_t size);

uint16_t getMemUsage();

#endif // D_MEM_H_