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writespeed.c 2.16 KB
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Aircheese authored 2020-04-12 23:56 . Export file examples to MSH
/*
* Copyright (c) 2006-2020, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2010-02-10 Bernard first version
* 2020-04-12 Jianjia Ma add msh cmd
*/
#include <rtthread.h>
#include <dfs_posix.h>
void writespeed(const char* filename, int total_length, int block_size)
{
int fd, index, length;
char *buff_ptr;
rt_tick_t tick;
fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0);
if (fd < 0)
{
rt_kprintf("open file:%s failed\n", filename);
return;
}
buff_ptr = rt_malloc(block_size);
if (buff_ptr == RT_NULL)
{
rt_kprintf("no memory\n");
close(fd);
return;
}
/* prepare write data */
for (index = 0; index < block_size; index++)
{
buff_ptr[index] = index;
}
index = 0;
/* get the beginning tick */
tick = rt_tick_get();
while (index < total_length / block_size)
{
length = write(fd, buff_ptr, block_size);
if (length != block_size)
{
rt_kprintf("write failed\n");
break;
}
index ++;
}
tick = rt_tick_get() - tick;
/* close file and release memory */
close(fd);
rt_free(buff_ptr);
/* calculate write speed */
rt_kprintf("File write speed: %d byte/s\n", total_length / tick * RT_TICK_PER_SECOND);
}
#ifdef RT_USING_FINSH
#include <finsh.h>
FINSH_FUNCTION_EXPORT(writespeed, perform file write test);
#ifdef FINSH_USING_MSH
static void cmd_writespeed(int argc, char *argv[])
{
char* filename;
int length;
int block_size;
if(argc == 4)
{
filename = argv[1];
length = atoi(argv[2]);
block_size = atoi(argv[3]);
}
else if(argc == 2)
{
filename = argv[1];
block_size = 512;
length = 1024*1024;
}
else
{
rt_kprintf("Usage:\nwritespeed [file_path] [length] [block_size]\n");
rt_kprintf("writespeed [file_path] with default length 1MB and block size 512\n");
return;
}
writespeed(filename, length, block_size);
}
FINSH_FUNCTION_EXPORT_ALIAS(cmd_writespeed, __cmd_writespeed, test file system write speed);
#endif /* FINSH_USING_MSH */
#endif /* RT_USING_FINSH */

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