1*10465441SEvalZero /*
2*10465441SEvalZero * File : readspeed.c
3*10465441SEvalZero * This file is part of RT-TestCase in RT-Thread RTOS
4*10465441SEvalZero * COPYRIGHT (C) 2010, RT-Thread Development Team
5*10465441SEvalZero *
6*10465441SEvalZero * The license and distribution terms for this file may be
7*10465441SEvalZero * found in the file LICENSE in this distribution or at
8*10465441SEvalZero * http://www.rt-thread.org/license/LICENSE
9*10465441SEvalZero *
10*10465441SEvalZero * Change Logs:
11*10465441SEvalZero * Date Author Notes
12*10465441SEvalZero * 2010-02-10 Bernard first version
13*10465441SEvalZero */
14*10465441SEvalZero
15*10465441SEvalZero #include <rtthread.h>
16*10465441SEvalZero #include <dfs_posix.h>
17*10465441SEvalZero
readspeed(const char * filename,int block_size)18*10465441SEvalZero void readspeed(const char* filename, int block_size)
19*10465441SEvalZero {
20*10465441SEvalZero int fd;
21*10465441SEvalZero char *buff_ptr;
22*10465441SEvalZero rt_size_t total_length;
23*10465441SEvalZero rt_tick_t tick;
24*10465441SEvalZero
25*10465441SEvalZero fd = open(filename, 0, O_RDONLY);
26*10465441SEvalZero if (fd < 0)
27*10465441SEvalZero {
28*10465441SEvalZero rt_kprintf("open file:%s failed\n", filename);
29*10465441SEvalZero return;
30*10465441SEvalZero }
31*10465441SEvalZero
32*10465441SEvalZero buff_ptr = rt_malloc(block_size);
33*10465441SEvalZero if (buff_ptr == RT_NULL)
34*10465441SEvalZero {
35*10465441SEvalZero rt_kprintf("no memory\n");
36*10465441SEvalZero close(fd);
37*10465441SEvalZero
38*10465441SEvalZero return;
39*10465441SEvalZero }
40*10465441SEvalZero
41*10465441SEvalZero tick = rt_tick_get();
42*10465441SEvalZero total_length = 0;
43*10465441SEvalZero while (1)
44*10465441SEvalZero {
45*10465441SEvalZero int length;
46*10465441SEvalZero length = read(fd, buff_ptr, block_size);
47*10465441SEvalZero
48*10465441SEvalZero if (length <= 0) break;
49*10465441SEvalZero total_length += length;
50*10465441SEvalZero }
51*10465441SEvalZero tick = rt_tick_get() - tick;
52*10465441SEvalZero
53*10465441SEvalZero /* close file and release memory */
54*10465441SEvalZero close(fd);
55*10465441SEvalZero rt_free(buff_ptr);
56*10465441SEvalZero
57*10465441SEvalZero /* calculate read speed */
58*10465441SEvalZero rt_kprintf("File read speed: %d byte/s\n", total_length /tick * RT_TICK_PER_SECOND);
59*10465441SEvalZero }
60*10465441SEvalZero
61*10465441SEvalZero #ifdef RT_USING_FINSH
62*10465441SEvalZero #include <finsh.h>
63*10465441SEvalZero FINSH_FUNCTION_EXPORT(readspeed, perform file read test);
64*10465441SEvalZero #endif
65