93 lines
1.9 KiB
C
93 lines
1.9 KiB
C
#ifndef HEAP_H
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#define HEAP_H
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/*
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* Allocate a block with specified (physical) alignment
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*
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* "align" must be a power of 2.
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*
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* Note that "align" affects the alignment of the physical address,
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* not the virtual address. This is almost certainly what you want.
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*
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*/
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extern void * emalloc ( size_t size, unsigned int align );
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/*
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* Allocate all remaining space on the heap
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*
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*/
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extern void * emalloc_all ( size_t *size );
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/*
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* Free a block.
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*
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* The caller must ensure that the block being freed is the last (most
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* recent) block allocated on the heap, otherwise heap corruption will
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* occur.
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*
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*/
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extern void efree ( void *ptr );
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/*
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* Free all allocated blocks on the heap
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*
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*/
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extern void efree_all ( void );
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/*
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* Resize a block.
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*
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* The caller must ensure that the block being resized is the last
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* (most recent) block allocated on the heap, otherwise heap
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* corruption will occur.
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*
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*/
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extern void * erealloc ( void *ptr, size_t size );
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/*
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* Allocate, free, and resize blocks without caring about alignment
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*
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*/
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static inline void * malloc ( size_t size ) {
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return emalloc ( size, sizeof ( void * ) );
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}
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static inline void free ( void *ptr ) {
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efree ( ptr );
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}
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static inline void * realloc ( void *ptr, size_t size ) {
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return erealloc ( ptr, size );
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}
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/*
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* Legacy API calls
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*
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*/
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static inline void * allot ( size_t size ) {
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return emalloc ( size, sizeof ( void * ) );
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}
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static inline void forget ( void *ptr ) {
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efree ( ptr );
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}
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static inline void * allot2 ( size_t size, uint32_t mask ) {
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return emalloc ( size, mask + 1 );
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}
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static inline void forget2 ( void *ptr ) {
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efree ( ptr );
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}
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/*
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* Heap markers. osloader.c and other code may wish to know the heap
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* location, without necessarily wanting to drag in heap.o. We
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* therefore declare these as shared (i.e. common) symbols.
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*
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*/
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physaddr_t heap_ptr __asm__ ( "_shared_heap_ptr" );
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physaddr_t heap_end __asm__ ( "_shared_heap_end" );
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#endif /* HEAP_H */
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