1*10465441SEvalZero /* 2*10465441SEvalZero * Copyright (c) 2006-2018, RT-Thread Development Team 3*10465441SEvalZero * 4*10465441SEvalZero * SPDX-License-Identifier: Apache-2.0 5*10465441SEvalZero * 6*10465441SEvalZero * Change Logs: 7*10465441SEvalZero * Date Author Notes 8*10465441SEvalZero * 2018-06-10 Bernard first version 9*10465441SEvalZero */ 10*10465441SEvalZero 11*10465441SEvalZero #ifndef __LWP_MEMHEAP_H__ 12*10465441SEvalZero #define __LWP_MEMHEAP_H__ 13*10465441SEvalZero 14*10465441SEvalZero #include <stdint.h> 15*10465441SEvalZero #include <rtthread.h> 16*10465441SEvalZero 17*10465441SEvalZero /** 18*10465441SEvalZero * memory item on the heap 19*10465441SEvalZero */ 20*10465441SEvalZero struct rt_lwp_memheap_item 21*10465441SEvalZero { 22*10465441SEvalZero rt_uint32_t magic; /**< magic number for memheap */ 23*10465441SEvalZero struct rt_lwp_memheap *pool_ptr; /**< point of pool */ 24*10465441SEvalZero 25*10465441SEvalZero struct rt_lwp_memheap_item *next; /**< next memheap item */ 26*10465441SEvalZero struct rt_lwp_memheap_item *prev; /**< prev memheap item */ 27*10465441SEvalZero 28*10465441SEvalZero struct rt_lwp_memheap_item *next_free; /**< next free memheap item */ 29*10465441SEvalZero struct rt_lwp_memheap_item *prev_free; /**< prev free memheap item */ 30*10465441SEvalZero }; 31*10465441SEvalZero 32*10465441SEvalZero /** 33*10465441SEvalZero * Base structure of memory heap object 34*10465441SEvalZero */ 35*10465441SEvalZero struct rt_lwp_memheap 36*10465441SEvalZero { 37*10465441SEvalZero struct rt_object parent; /**< inherit from rt_object */ 38*10465441SEvalZero 39*10465441SEvalZero void *start_addr; /**< pool start address and size */ 40*10465441SEvalZero 41*10465441SEvalZero rt_uint32_t pool_size; /**< pool size */ 42*10465441SEvalZero rt_uint32_t available_size; /**< available size */ 43*10465441SEvalZero rt_uint32_t max_used_size; /**< maximum allocated size */ 44*10465441SEvalZero 45*10465441SEvalZero struct rt_lwp_memheap_item *block_list; /**< used block list */ 46*10465441SEvalZero struct rt_lwp_memheap_item *free_list; /**< free block list */ 47*10465441SEvalZero struct rt_lwp_memheap_item free_header; /**< free block list header */ 48*10465441SEvalZero 49*10465441SEvalZero struct rt_semaphore lock; /**< semaphore lock */ 50*10465441SEvalZero 51*10465441SEvalZero rt_list_t mlist; 52*10465441SEvalZero }; 53*10465441SEvalZero 54*10465441SEvalZero extern rt_err_t rt_lwp_memheap_init(struct rt_lwp_memheap *memheap, const char *name, void *start_addr, rt_uint32_t size); 55*10465441SEvalZero extern void *rt_lwp_memheap_alloc(struct rt_lwp_memheap *heap, rt_uint32_t size); 56*10465441SEvalZero extern void rt_lwp_memheap_free(void *ptr); 57*10465441SEvalZero extern void *rt_lwp_memheap_realloc(struct rt_lwp_memheap *heap, void *ptr, rt_size_t newsize); 58*10465441SEvalZero extern rt_bool_t rt_lwp_memheap_is_empty(struct rt_lwp_memheap *memheap); 59*10465441SEvalZero extern rt_bool_t rt_lwp_memheap_unavailable_size_get(void); 60*10465441SEvalZero 61*10465441SEvalZero #endif 62