diff options
Diffstat (limited to 'src/mem.c')
| -rw-r--r-- | src/mem.c | 43 |
1 files changed, 21 insertions, 22 deletions
@@ -1,7 +1,7 @@ /* * File : mem.c * This file is part of RT-Thread RTOS - * COPYRIGHT (C) 2008 - 2009, RT-Thread Development Team + * COPYRIGHT (C) 2008 - 2011, RT-Thread Development Team * * The license and distribution terms for this file may be * found in the file LICENSE in this distribution or at @@ -165,7 +165,7 @@ static void plug_holes(struct heap_mem *mem) * @param end_addr the end address of system page * */ -void rt_system_heap_init(void* begin_addr, void* end_addr) +void rt_system_heap_init(void *begin_addr, void *end_addr) { struct heap_mem *mem; rt_uint32_t begin_align = RT_ALIGN((rt_uint32_t)begin_addr, RT_ALIGN_SIZE); @@ -174,12 +174,14 @@ void rt_system_heap_init(void* begin_addr, void* end_addr) RT_DEBUG_NOT_IN_INTERRUPT; /* alignment addr */ - if((end_align > (2 * SIZEOF_STRUCT_MEM) ) && - ((end_align - 2 * SIZEOF_STRUCT_MEM) >= begin_align )) { - /* calculate the aligned memory size */ + if ((end_align > (2 * SIZEOF_STRUCT_MEM)) && + ((end_align - 2 * SIZEOF_STRUCT_MEM) >= begin_align)) + { + /* calculate the aligned memory size */ mem_size_aligned = end_align - begin_align - 2 * SIZEOF_STRUCT_MEM; } - else { + else + { rt_kprintf("mem init, error begin address 0x%x, and end address 0x%x\n", (rt_uint32_t)begin_addr, (rt_uint32_t)end_addr); return; } @@ -242,13 +244,13 @@ void *rt_malloc(rt_size_t size) if (size > mem_size_aligned) { - RT_DEBUG_LOG(RT_DEBUG_MEM,("no memory\n")); + RT_DEBUG_LOG(RT_DEBUG_MEM, ("no memory\n")); return RT_NULL; } /* every data block must be at least MIN_SIZE_ALIGNED long */ - if(size < MIN_SIZE_ALIGNED) size = MIN_SIZE_ALIGNED; + if (size < MIN_SIZE_ALIGNED) size = MIN_SIZE_ALIGNED; /* take memory semaphore */ rt_sem_take(&heap_sem, RT_WAITING_FOREVER); @@ -258,8 +260,7 @@ void *rt_malloc(rt_size_t size) { mem = (struct heap_mem *)&heap_ptr[ptr]; - if ((!mem->used) && - (mem->next - (ptr + SIZEOF_STRUCT_MEM)) >= size) + if ((!mem->used) && (mem->next - (ptr + SIZEOF_STRUCT_MEM)) >= size) { /* mem is not used and at least perfect fit is possible: * mem->next - (ptr + SIZEOF_STRUCT_MEM) gives us the 'user data size' of mem */ @@ -328,9 +329,9 @@ void *rt_malloc(rt_size_t size) RT_ASSERT((rt_uint32_t)((rt_uint8_t *)mem + SIZEOF_STRUCT_MEM) % RT_ALIGN_SIZE == 0); RT_ASSERT((((rt_uint32_t)mem) & (RT_ALIGN_SIZE-1)) == 0); - RT_DEBUG_LOG(RT_DEBUG_MEM,("allocate memory at 0x%x, size: %d\n", - (rt_uint32_t)((rt_uint8_t*)mem + SIZEOF_STRUCT_MEM), - (rt_uint32_t)(mem->next - ((rt_uint8_t*)mem - heap_ptr)))); + RT_DEBUG_LOG(RT_DEBUG_MEM, ("allocate memory at 0x%x, size: %d\n", + (rt_uint32_t)((rt_uint8_t *)mem + SIZEOF_STRUCT_MEM), + (rt_uint32_t)(mem->next - ((rt_uint8_t *)mem - heap_ptr)))); RT_OBJECT_HOOK_CALL(rt_malloc_hook, (((void*)((rt_uint8_t *)mem + SIZEOF_STRUCT_MEM)), size)); /* return the memory data except mem struct */ @@ -355,7 +356,7 @@ void *rt_realloc(void *rmem, rt_size_t newsize) rt_size_t size; rt_size_t ptr, ptr2; struct heap_mem *mem, *mem2; - void* nmem; + void *nmem; RT_DEBUG_NOT_IN_INTERRUPT; @@ -363,7 +364,7 @@ void *rt_realloc(void *rmem, rt_size_t newsize) newsize = RT_ALIGN(newsize, RT_ALIGN_SIZE); if (newsize > mem_size_aligned) { - RT_DEBUG_LOG(RT_DEBUG_MEM,("realloc: out of memory\n")); + RT_DEBUG_LOG(RT_DEBUG_MEM, ("realloc: out of memory\n")); return RT_NULL; } @@ -478,7 +479,7 @@ void rt_free(void *rmem) if ((rt_uint8_t *)rmem < (rt_uint8_t *)heap_ptr || (rt_uint8_t *)rmem >= (rt_uint8_t *)heap_end) { - RT_DEBUG_LOG(RT_DEBUG_MEM,("illegal memory\n")); + RT_DEBUG_LOG(RT_DEBUG_MEM, ("illegal memory\n")); return; } @@ -486,9 +487,9 @@ void rt_free(void *rmem) /* Get the corresponding struct heap_mem ... */ mem = (struct heap_mem *)((rt_uint8_t *)rmem - SIZEOF_STRUCT_MEM); - RT_DEBUG_LOG(RT_DEBUG_MEM,("release memory 0x%x, size: %d\n", + RT_DEBUG_LOG(RT_DEBUG_MEM, ("release memory 0x%x, size: %d\n", (rt_uint32_t)rmem, - (rt_uint32_t)(mem->next - ((rt_uint8_t*)mem - heap_ptr)))); + (rt_uint32_t)(mem->next - ((rt_uint8_t *)mem - heap_ptr)))); /* protect the heap from concurrent access */ @@ -517,9 +518,7 @@ void rt_free(void *rmem) } #ifdef RT_MEM_STATS -void rt_memory_info(rt_uint32_t *total, - rt_uint32_t *used, - rt_uint32_t *max_used) +void rt_memory_info(rt_uint32_t *total, rt_uint32_t *used, rt_uint32_t *max_used) { if (total != RT_NULL) *total = mem_size_aligned; if (used != RT_NULL) *used = used_mem; @@ -528,7 +527,7 @@ void rt_memory_info(rt_uint32_t *total, #ifdef RT_USING_FINSH #include <finsh.h> -void list_mem() +void list_mem(void) { rt_kprintf("total memory: %d\n", mem_size_aligned); rt_kprintf("used memory : %d\n", used_mem); |