Question

现在我知道gdb使我们能够在执行的线程之间切换。

但是，为了更方便，我想知道是否可以在应用程序中打开与线程一样多的终端仿真器，并在每个仿真器中都有一个gdb实例，每个绑定到一个特定的线程？

Answer 1

并在每个仿真器中都有一个gdb实例，每个仿真器绑定到一个特别的线程

您无法将多个gdb实例附加到同一进程。这是gdb使用的ptrace系统调用的限制。来自man ptrace：

   EPERM  The specified process cannot be traced.  This could be because
          the tracer has insufficient privileges (the required
          capability is CAP_SYS_PTRACE); unprivileged processes cannot
          trace processes that they cannot send signals to or those
          running set-user-ID/set-group-ID programs, for obvious
          reasons.  Alternatively, the process may already be being
          traced, or (on kernels before 2.6.26) be init(1) (PID 1).

每个gdb实例可以有一个线程吗？

1 个答案: