104 lines
2.4 KiB
C++
104 lines
2.4 KiB
C++
/*
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* Copyright 2002-2006, Axel Dörfler, axeld@pinc-software.de.
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* Distributed under the terms of the MIT License.
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*
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* Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
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* Distributed under the terms of the NewOS License.
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*/
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#ifndef _KERNEL_HEAP_H
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#define _KERNEL_HEAP_H
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#include <OS.h>
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#include "kernel_debug_config.h"
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// allocate 16MB initial heap for the kernel
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#define INITIAL_HEAP_SIZE 16 * 1024 * 1024
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// grow by another 4MB each time the heap runs out of memory
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#define HEAP_GROW_SIZE 4 * 1024 * 1024
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// allocate a dedicated 1MB area for dynamic growing
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#define HEAP_DEDICATED_GROW_SIZE 1 * 1024 * 1024
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// use areas for allocations bigger than 1MB
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#define HEAP_AREA_USE_THRESHOLD 1 * 1024 * 1024
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typedef struct heap_class_s {
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const char *name;
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uint32 initial_percentage;
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size_t max_allocation_size;
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size_t page_size;
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size_t min_bin_size;
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size_t bin_alignment;
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uint32 min_count_per_page;
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size_t max_waste_per_page;
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} heap_class;
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typedef struct heap_allocator_s heap_allocator;
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#ifdef __cplusplus
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extern "C" {
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#endif
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// malloc_nogrow disallows waiting for a grow to happen - only to be used by
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// vm functions that may deadlock on a triggered area creation
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void *malloc_nogrow(size_t size);
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void *memalign(size_t alignment, size_t size);
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void deferred_free(void* block);
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void* malloc_referenced(size_t size);
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void* malloc_referenced_acquire(void* data);
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void malloc_referenced_release(void* data);
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heap_allocator* heap_create_allocator(const char* name, addr_t base,
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size_t size, const heap_class* heapClass);
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void* heap_memalign(heap_allocator* heap, size_t alignment, size_t size);
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status_t heap_free(heap_allocator* heap, void* address);
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#if KERNEL_HEAP_LEAK_CHECK
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void heap_set_get_caller(heap_allocator* heap, addr_t (*getCaller)());
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#endif
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status_t heap_init(addr_t heapBase, size_t heapSize);
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status_t heap_init_post_sem();
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status_t heap_init_post_thread();
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#ifdef __cplusplus
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}
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#endif
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#ifdef __cplusplus
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#include <new>
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#include <util/SinglyLinkedList.h>
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static const struct nogrow_t {
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} nogrow = {};
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inline void*
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operator new(size_t size, const nogrow_t& nogrow) throw()
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{
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return malloc_nogrow(size);
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}
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class DeferredDeletable : public SinglyLinkedListLinkImpl<DeferredDeletable> {
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public:
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virtual ~DeferredDeletable();
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};
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void deferred_delete(DeferredDeletable* deletable);
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#endif /* __cplusplus */
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#endif /* _KERNEL_MEMHEAP_H */
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