库实现之分配内存储器对齐的程序aligned_malloc和aligned_free函数

库实现之分配内存对齐的程序aligned_malloc和aligned_free函数

分配内存管理对齐的程序

void *aligned_malloc(int size, int alignment)

{

      void *ptr = (void*)malloc(size + alignment);

      if (ptr)

      {

            void * aligned =(void *)(((long)ptr + alignment) & (~(alignment-1)));

            (void **)aligned[-1] = ptr;

             return aligned;

      }

      return NULL;

}

释放函数aligned_free

void *aligned_free(void *paligned)

{

      free(paligned);

}