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 // allocate 16MB initial heap for the kernel 14 #define INITIAL_HEAP_SIZE 16 * 1024 * 1024 15 // grow by another 4MB each time the heap runs out of memory 16 #define HEAP_GROW_SIZE 4 * 1024 * 1024 17 // allocate a dedicated 1MB area for dynamic growing 18 #define HEAP_DEDICATED_GROW_SIZE 1 * 1024 * 1024 19 // use areas for allocations bigger than 1MB 20 #define HEAP_AREA_USE_THRESHOLD 1 * 1024 * 1024 21 22 // store size, thread and team info at the end of each allocation block 23 #define KERNEL_HEAP_LEAK_CHECK 0 24 25 26 typedef struct heap_class_s { 27 const char *name; 28 uint32 initial_percentage; 29 size_t max_allocation_size; 30 size_t page_size; 31 size_t min_bin_size; 32 size_t bin_alignment; 33 uint32 min_count_per_page; 34 size_t max_waste_per_page; 35 } heap_class; 36 37 typedef struct heap_allocator_s heap_allocator; 38 39 40 #ifdef __cplusplus 41 extern "C" { 42 #endif 43 44 // malloc_nogrow disallows waiting for a grow to happen - only to be used by 45 // vm functions that may deadlock on a triggered area creation 46 void *malloc_nogrow(size_t size); 47 48 void *memalign(size_t alignment, size_t size); 49 50 void deferred_free(void* block); 51 52 void* malloc_referenced(size_t size); 53 void* malloc_referenced_acquire(void* data); 54 void malloc_referenced_release(void* data); 55 56 heap_allocator* heap_create_allocator(const char* name, addr_t base, 57 size_t size, const heap_class* heapClass); 58 void* heap_memalign(heap_allocator* heap, size_t alignment, size_t size); 59 status_t heap_free(heap_allocator* heap, void* address); 60 61 #if KERNEL_HEAP_LEAK_CHECK 62 void heap_set_get_caller(heap_allocator* heap, addr_t (*getCaller)()); 63 #endif 64 65 status_t heap_init(addr_t heapBase, size_t heapSize); 66 status_t heap_init_post_sem(); 67 status_t heap_init_post_thread(); 68 69 #ifdef __cplusplus 70 } 71 #endif 72 73 74 #ifdef __cplusplus 75 76 #include <new> 77 78 static const struct nogrow_t { 79 } nogrow = {}; 80 81 inline void* 82 operator new(size_t size, const nogrow_t& nogrow) 83 { 84 return malloc_nogrow(size); 85 } 86 87 #endif /* __cplusplus */ 88 89 90 #endif /* _KERNEL_MEMHEAP_H */ 91