Question

我试图退出调试会话，并要求用户输入验证。我尝试在我的代码中运行此代码片段

    stdin.println("quit");
    stdin.flush();
    stdin.println("y");  // this does not work..
    stdin.flush();

但它不起作用..

如何使用此java外部程序将输入发送到gdb？

public class Debugger extends Thread{

        public void run(){
        Process p = null;
        try {
        p = Runtime.getRuntime().exec("gdb a.out --interpreter=console");
       new Thread(new SyncPipe(p.getErrorStream(), System.err)).start();
       new Thread(new SyncPipe(p.getInputStream(), System.out)).start();
        PrintWriter stdin = new PrintWriter(p.getOutputStream());

        stdin.flush();
        stdin.println("break main");
        stdin.flush();
        stdin.println("run");
        stdin.flush();
        stdin.println("s");
        stdin.flush();
        stdin.println("quit");
        stdin.flush();
        stdin.println("y");  // this does not work..
        stdin.flush();
       // stdin.close();


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

class SyncPipe implements Runnable
{

    public SyncPipe(InputStream istrm, OutputStream ostrm) {
      istrm_ = istrm;
      ostrm_ = ostrm;

  }

  public void run() {

      try
      {   
           int length;
           byte[] buffer = new byte[1024];

          for ( length = 0; (length = istrm_.read(buffer)) != -1; ){

              ostrm_.write(buffer, 0, length);
          } 

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


  }


  private final OutputStream ostrm_;
  private final InputStream istrm_;
}

GDB输出：

GNU gdb (Ubuntu/Linaro 7.3-0ubuntu2) 7.3-2011.08
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.launchpad.net/gdb-linaro/>...
Reading symbols from /home/charmae/workspace/AVT/a.out...done.
(gdb) Breakpoint 1 at 0x804853d: file fileg.c, line 7.
(gdb) Starting program: /home/charmae/workspace/AVT/a.out 

Breakpoint 1, main () at fileg.c:7
7       printf("input of x: ");
(gdb) 8     scanf("%d",&x);
(gdb) A debugging session is active.

    Inferior 1 [process 6341] will be killed.

Quit anyway? (y or n) [answered Y; input not from terminal]

Answer 1

运行gdb设置set confirm off

例如：

gdb -ex run -ex "set confirm off" --args ./program [arg1] [arg2] [arg3]

Java GDB输入不是来自终端

1 个答案: