使用 C for unix 使用线程根据给定根位置遍历文件系统

发布于 2024-10-20 08:37:34 字数 1672 浏览 1 评论 0原文

我想使用线程和进程遍历文件系统。我的程序必须假设第一个参数要么是提供多进程应用程序的“-p”，要么是以多线程方式运行的“-t”。第二个参数是文件或目录的路径名。如果我的程序获取文件的路径，它应该打印出文件的大小（以字节为单位）。如果我的程序获取目录的路径，它应该以同样的方式打印出目录名称，然后处理该目录中的所有条目除目录本身和父目录外的目录。如果给我的程序一个目录，它必须显示以指定目录为根的整个层次结构。我写了一些东西，但我陷入困境。我无法改进我的代码。请帮助我。

我的代码如下：

include

int

funcThread(DIR *D);

int main(int argc, char * argv[]) { pthread_t 线程[100]； DIR *dir指针； struct stat object_file; 结构体 *object_dir; 整数计数器；

    if(opendir(argv[1])==NULL)
{
    printf("\n\nERROR !\n\n Please enter -p or -t \n\n");
    return 0;
}

if((dirPointer=opendir(argv[1]))=="-t") 
{
    if ((object_dir = opendir(argv[2])) == NULL) 
        {
                printf("\n\nERROR !\n\nPlease enter the third argument\n\n");
                return 0;.
        }
    else
    {   
        counter=0;
        while ((object_dir = readdir(object_dir)) != NULL)
        {
            pthread_create(&thread[counter],NULL,funcThread,(void *) object_dir);
            counter++;
        }

    }

}

返回0； int

funcThread(DIR *dPtr) { 目录 *ptr; struct stat oFile；结构体 *oDir; 整数；

if(ptr=readdir(dPtr)==NULL)
    rewinddir(ptr); 

if(S_ISDIR(oFile.st_mode)) 
{
    ptr=readdir(dPtr);
    printf("\t%s\n",ptr);
    return funcThread(ptr);
}
else
{
    while(ptr=readdir(dPtr)!=NULL) 
    {
        printf("\n%s\n",oDir->d_name);
        stat(oDir->d_name,&oFile);
        printf("\n%f\n",oFile.st_size);
    }
    rewinddir(ptr); 
}

}

原文

I wanna traverse inside the file system by using threads and processes.My program has to assume the first parameter is either given as "-p" which offers a multi-process application or "-t" which runs in a multi-threaded way. The second parameter is the
pathname of a file or directory. If my program gets the path of a file, it should print out the size of the file in bytes. If my program gets the path of a directory, it should, in the same way, print out the directory name, then process all the entries in the
directory except the directory itself and the parent directory. If my program is given a directory, it must display the entire hierarchy rooted at the specified directory. I wrote something but I got stuck in.I can not improve my code.Please help me.

My code is as following:

include

int funcThread(DIR *D);

int main(int argc, char * argv[])
{
pthread_t thread[100];
DIR *dirPointer;
struct stat object_file;
struct dirent *object_dir;
int counter;

    if(opendir(argv[1])==NULL)
{
    printf("\n\nERROR !\n\n Please enter -p or -t \n\n");
    return 0;
}

if((dirPointer=opendir(argv[1]))=="-t") 
{
    if ((object_dir = opendir(argv[2])) == NULL) 
        {
                printf("\n\nERROR !\n\nPlease enter the third argument\n\n");
                return 0;.
        }
    else
    {   
        counter=0;
        while ((object_dir = readdir(object_dir)) != NULL)
        {
            pthread_create(&thread[counter],NULL,funcThread,(void *) object_dir);
            counter++;
        }

    }

}

return 0;
}

int funcThread(DIR *dPtr)
{
DIR *ptr;
struct stat oFile;
struct dirent *oDir;
int num;

if(ptr=readdir(dPtr)==NULL)
    rewinddir(ptr); 

if(S_ISDIR(oFile.st_mode)) 
{
    ptr=readdir(dPtr);
    printf("\t%s\n",ptr);
    return funcThread(ptr);
}
else
{
    while(ptr=readdir(dPtr)!=NULL) 
    {
        printf("\n%s\n",oDir->d_name);
        stat(oDir->d_name,&oFile);
        printf("\n%f\n",oFile.st_size);
    }
    rewinddir(ptr); 
}

}

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