1 /* 2 * Copyright 2002-2006, Axel Dörfler, axeld@pinc-software.de. 3 * Distributed under the terms of the MIT License. 4 * 5 * Copyright 2001-2002, Travis Geiselbrecht. All rights reserved. 6 * Distributed under the terms of the NewOS License. 7 */ 8 #ifndef _KERNEL_HEAP_H 9 #define _KERNEL_HEAP_H 10 11 #include <OS.h> 12 13 #include "kernel_debug_config.h" 14 15 16 #if USE_GUARDED_HEAP_FOR_MALLOC && USE_GUARDED_HEAP_FOR_OBJECT_CACHE 17 18 // This requires a lot of up-front memory to boot at all... 19 #define INITIAL_HEAP_SIZE 128 * 1024 * 1024 20 // ... and a lot of reserves to keep running. 21 #define HEAP_GROW_SIZE 128 * 1024 * 1024 22 23 #elif USE_GUARDED_HEAP_FOR_MALLOC 24 25 #define INITIAL_HEAP_SIZE 32 * 1024 * 1024 26 #define HEAP_GROW_SIZE 32 * 1024 * 1024 27 28 #else 29 30 // allocate 16MB initial heap for the kernel 31 #define INITIAL_HEAP_SIZE 16 * 1024 * 1024 32 // grow by another 4MB each time the heap runs out of memory 33 #define HEAP_GROW_SIZE 4 * 1024 * 1024 34 // allocate a dedicated 1MB area for dynamic growing 35 #define HEAP_DEDICATED_GROW_SIZE 1 * 1024 * 1024 36 // use areas for allocations bigger than 1MB 37 #define HEAP_AREA_USE_THRESHOLD 1 * 1024 * 1024 38 39 #endif 40 41 42 // allocation/deallocation flags for {malloc,free}_etc() 43 #define HEAP_DONT_WAIT_FOR_MEMORY 0x01 44 #define HEAP_DONT_LOCK_KERNEL_SPACE 0x02 45 #define HEAP_PRIORITY_VIP 0x04 46 47 48 typedef struct heap_class_s { 49 const char *name; 50 uint32 initial_percentage; 51 size_t max_allocation_size; 52 size_t page_size; 53 size_t min_bin_size; 54 size_t bin_alignment; 55 uint32 min_count_per_page; 56 size_t max_waste_per_page; 57 } heap_class; 58 59 typedef struct heap_allocator_s heap_allocator; 60 61 62 #ifdef __cplusplus 63 extern "C" { 64 #endif 65 66 67 void* memalign_etc(size_t alignment, size_t size, uint32 flags) _ALIGNED_BY_ARG(1); 68 void* realloc_etc(void* address, size_t newSize, uint32 flags); 69 void free_etc(void* address, uint32 flags); 70 71 void* memalign(size_t alignment, size_t size) _ALIGNED_BY_ARG(1); 72 73 void deferred_free(void* block); 74 75 void heap_add_area(heap_allocator* heap, area_id areaID, addr_t base, 76 size_t size); 77 heap_allocator* heap_create_allocator(const char* name, addr_t base, 78 size_t size, const heap_class* heapClass, bool allocateOnHeap); 79 void* heap_memalign(heap_allocator* heap, size_t alignment, size_t size) _ALIGNED_BY_ARG(2); 80 status_t heap_free(heap_allocator* heap, void* address); 81 82 #if KERNEL_HEAP_LEAK_CHECK 83 void heap_set_get_caller(heap_allocator* heap, addr_t (*getCaller)()); 84 #endif 85 86 status_t heap_init(addr_t heapBase, size_t heapSize); 87 status_t heap_init_post_area(); 88 status_t heap_init_post_sem(); 89 status_t heap_init_post_thread(); 90 91 #ifdef __cplusplus 92 } 93 #endif 94 95 96 static inline void* 97 malloc_etc(size_t size, uint32 flags) 98 { 99 return memalign_etc(0, size, flags); 100 } 101 102 103 #ifdef __cplusplus 104 105 #include <new> 106 107 #include <util/SinglyLinkedList.h> 108 109 110 struct malloc_flags { 111 uint32 flags; 112 113 malloc_flags(uint32 flags) 114 : 115 flags(flags) 116 { 117 } 118 119 malloc_flags(const malloc_flags& other) 120 : 121 flags(other.flags) 122 { 123 } 124 }; 125 126 127 inline void* 128 operator new(size_t size, const malloc_flags& flags) throw() 129 { 130 return malloc_etc(size, flags.flags); 131 } 132 133 134 inline void* 135 operator new[](size_t size, const malloc_flags& flags) throw() 136 { 137 return malloc_etc(size, flags.flags); 138 } 139 140 141 class DeferredDeletable : public SinglyLinkedListLinkImpl<DeferredDeletable> { 142 public: 143 virtual ~DeferredDeletable(); 144 }; 145 146 147 void deferred_delete(DeferredDeletable* deletable); 148 149 150 #endif /* __cplusplus */ 151 152 153 #endif /* _KERNEL_MEMHEAP_H */ 154