65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
/*
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* File : readspeed.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 readspeed(const char* filename, int block_size)
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{
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int fd;
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char *buff_ptr;
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rt_size_t total_length;
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rt_tick_t tick;
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fd = open(filename, 0, O_RDONLY);
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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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tick = rt_tick_get();
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total_length = 0;
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while (1)
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{
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int length;
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length = read(fd, buff_ptr, block_size);
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if (length <= 0) break;
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total_length += length;
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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 read speed */
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rt_kprintf("File read 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(readspeed, perform file read test);
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#endif
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