73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
/*
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* File : writespeed.c
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* This file is part of RT-TestCase in RT-Thread RTOS
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* COPYRIGHT (C) 2010, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2010-02-10 Bernard first version
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*/
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#include <rtthread.h>
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#include <dfs_posix.h>
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void writespeed(const char* filename, int total_length, int block_size)
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{
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int fd, index, length;
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char *buff_ptr;
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rt_tick_t tick;
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fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0);
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if (fd < 0)
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{
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rt_kprintf("open file:%s failed\n", filename);
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return;
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}
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buff_ptr = rt_malloc(block_size);
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if (buff_ptr == RT_NULL)
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{
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rt_kprintf("no memory\n");
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close(fd);
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return;
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}
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/* prepare write data */
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for (index = 0; index < block_size; index++)
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{
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buff_ptr[index] = index;
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}
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index = 0;
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/* get the beginning tick */
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tick = rt_tick_get();
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while (index < total_length / block_size)
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{
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length = write(fd, buff_ptr, block_size);
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if (length != block_size)
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{
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rt_kprintf("write failed\n");
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break;
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}
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index ++;
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}
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tick = rt_tick_get() - tick;
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/* close file and release memory */
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close(fd);
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rt_free(buff_ptr);
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/* calculate write speed */
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rt_kprintf("File write speed: %d byte/s\n", total_length / tick * RT_TICK_PER_SECOND);
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}
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#ifdef RT_USING_FINSH
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#include <finsh.h>
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FINSH_FUNCTION_EXPORT(writespeed, perform file write test);
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#endif
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