Question

我有这个插件，安装后，在一些临时位置提取一些可执行文件，并使用它们。这是我的代码：

public class StartCheck  implements IStartup {

private BufferedReader buf=null;
public static String pathBandwidth;
public static String pathDeviceQuery;
public static String pathKernelLaunchOverhead;
public static String memoryLatency;

public void earlyStartup() {
    // This method checks for presence of nvcc when Eclipse starts-up.
    String command="nvcc --version";
    Runtime run = Runtime.getRuntime();
    Process pr;

    try {
        pr = run.exec(command);
        pr.waitFor();
        buf = new BufferedReader(new InputStreamReader(pr.getInputStream()));
        //print-out the nvcc version
        System.out.println(buf.readLine());
        Preparation.return_val=true;

        //extract the executables
        Bundle bundle = Platform.getBundle("PTXAnalysis");
        URL url_bandwidth = FileLocator.find(bundle, new Path("/Executables/bandWidth.out"), null);
        URL url_deviceQuery = FileLocator.find(bundle, new Path("/Executables/deviceQuery.out"), null);
        URL url_kernelLaunchOverhead = FileLocator.find(bundle, new Path("/Executables/empty"), null);
        URL url_memoryLatency = FileLocator.find(bundle, new Path("/Executables/memLatency.out"), null);
        try {
            url_bandwidth = FileLocator.toFileURL(url_bandwidth);
            url_deviceQuery = FileLocator.toFileURL(url_deviceQuery);
            url_kernelLaunchOverhead = FileLocator.toFileURL(url_kernelLaunchOverhead);
            url_memoryLatency = FileLocator.toFileURL(url_memoryLatency);               
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        pathBandwidth=url_bandwidth.toString();
        pathDeviceQuery=url_deviceQuery.toString();
        pathKernelLaunchOverhead=url_kernelLaunchOverhead.toString();
        memoryLatency=url_memoryLatency.toString();         
    }catch (IOException e) {
        //disable all commands since no further task can be done, prompt user to install nvcc.
        System.out.println("nvcc was not found on this computer. You won't be able to use the energy estimation plug-in");
        EnergyEstimator.return_val=false;
        Preparation.return_val=false;

        } catch (InterruptedException e) {
        e.printStackTrace();
        }


    }

}

当我安装插件时，它为我提供了这个位置（众多之一），其中提取了可执行文件：

/home/limafoxtrottango/.eclipse/org.eclipse.platform_4.4.1_2069420271_linux_gtx_x86_64/configuration/org.eclipse.osgi/460/0/.cp/Executables/bandWidth.out

现在，问题：我找不到任何这样的目录。我知道它是一个临时目录，但即使Eclipse正在运行它也不会显示。我正在使用其中一个路径使用ProcessBuilder运行可执行文件。这是代码：

public static void runExecutable(){
    initializeArray();
    path_result="/home/"+System.getProperty("user.name")+"/kernelLaunchOverhead.txt";
    String path_executable=StartCheck.pathKernelLaunchOverhead.substring(path_result.indexOf('/'),path_result.lastIndexOf('/')+1); //path to the directory in which the executable is extracted
    try {
        fw = new FileWriter(path_result);
        for(int i=0;i<arr.length;i++){

            ProcessBuilder builder=new ProcessBuilder("./empty",Integer.toString(arr[i]));
            builder.directory(new File(path_executable));
            int av=0;
            float sum=0;

                while(av<10){
                    Process pr=builder.start();
                    stdin = pr.getInputStream();
                    isr = new InputStreamReader(stdin);
                    br = new BufferedReader(isr);
                    sum=sum+Float.parseFloat(line=br.readLine());
                    av++;
                }
                fw.write(arr[i]+"   "+Float.toString(sum/10));
                fw.write("\n");
            }
        fw.close();

        } catch (IOException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }
    FillArrays(path_result);
    BestLineFit();
    saveModel("/home/"+System.getProperty("user.name")+"/KernelLaunchOverheadModel.txt");
}

在调用此函数时，没有任何反应。它甚至不会抛出任何 FileNotFound 异常。通常，它应该在目录中找到可执行文件并运行它。但在安装插件后，没有任何反应。

要重新迭代，类 StartCheck 会成功向我显示可执行文件的提取路径。但是这些路径在我的系统中不存在。

Answer 1

以.开头的目录（例如您显示的路径中的.eclipse）隐藏在Linux和macOS系统上。

您可以使用ls -a

从命令行查看它们

Eclipse在某个未知位置提取可执行文件

1 个答案: