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/*
* File : writespeed.c
* This file is part of RT-TestCase in RT-Thread RTOS
* COPYRIGHT (C) 2010, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2010-02-10 Bernard first version
*/
#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);
#endif
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