import RT-Thread@9217865c without bsp, libcpu and components/net

examples/file/writespeed.c

@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 2006-2021, 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_file.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/statfs.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);
+
+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);
+}
+MSH_CMD_EXPORT_ALIAS(cmd_writespeed, writespeed, test file system write speed);
+#endif /* RT_USING_FINSH */