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66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
#ifndef STRUCT_HEAP_H
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#define STRUCT_HEAP_H
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//#include <stdio.h>
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#include <stdint.h>
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#include <osdep_service.h>
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/* NOTE: struct size must be a 2's power! */
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typedef struct _MemChunk
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{
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struct _MemChunk *next;
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int size;
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} MemChunk;
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typedef MemChunk heap_buf_t;
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/// A heap
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typedef struct Heap
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{
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struct _MemChunk *FreeList; ///< Head of the free list
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} Heap;
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/**
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* Utility macro to allocate a heap of size \a size.
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*
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* \param name Variable name for the heap.
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* \param size Heap size in bytes.
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*/
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#define HEAP_DEFINE_BUF(name, size) \
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heap_buf_t name[((size) + sizeof(heap_buf_t) - 1) / sizeof(heap_buf_t)]
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/// Initialize \a heap within the buffer pointed by \a memory which is of \a size bytes
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void tcm_heap_init(void);
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/// Allocate a chunk of memory of \a size bytes from the heap
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void *tcm_heap_allocmem(int size);
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/// Free a chunk of memory of \a size bytes from the heap
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void tcm_heap_freemem(void *mem, int size);
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int tcm_heap_freeSpace(void);
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#define HNEW(heap, type) \
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(type*)tcm_heap_allocmem(heap, sizeof(type))
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#define HNEWVEC(heap, type, nelem) \
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(type*)tcm_heap_allocmem(heap, sizeof(type) * (nelem))
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#define HDELETE(heap, type, mem) \
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tcm_heap_freemem(heap, mem, sizeof(type))
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#define HDELETEVEC(heap, type, nelem, mem) \
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tcm_heap_freemem(heap, mem, sizeof(type) * (nelem))
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/**
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* \name Compatibility interface with C standard library
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* \{
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*/
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void *tcm_heap_malloc(int size);
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void *tcm_heap_calloc(int size);
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void tcm_heap_free(void * mem);
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/** \} */
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#endif /* STRUCT_HEAP_H */
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