从 MATLAB GUI 中发送 SIGINT
在 MATLAB GUI 应用程序中，我启动了一个外部程序（Windows 上的控制台应用程序），负责从测量系统读取数据。数据存储在多个文件中，外部程序完成后，MATLAB 应用程序将立即处理这些文件。问题是这样的：
外部程序在命令行上运行时，可以通过发出 SIGINT（即按 Ctrl + C）来正常停止。信号处理程序捕获 SIGINT 并关闭程序。有没有办法通过按下“中止”按钮从 MATLAB GUI 应用程序中执行此操作？
经过几个小时的搜索，我偶然发现了 http://www.caam.rice。 edu/~wy1/links/mex_ctrl_c_trick/ 显示了如何检测 MEX 文件中的 SIGINT。让 MEX 调用外部程序可能会起作用（尽管我还不确定细节）。然而，它仍然需要 Ctrl + C 来停止程序。如何通过 GUI 中的按钮发送 SIGINT？
From within a MATLAB GUI application, I'm starting an external program (a console application on Windows) that takes care of reading data from a measurement system. The data is stored in several files that are processed by the MATLAB application as soon as the external program has finished. The problem is this:
The external program, when run on the command line, can be gracefully stopped by issuing a SIGINT (i.e. by pressing Ctrl + C). A signal handler traps the SIGINT and shuts down the program. Is there a way to do this from within the MATLAB GUI application, by pushing an "abort" button?
After many hours of searching I stumbled upon http://www.caam.rice.edu/~wy1/links/mex_ctrl_c_trick/ which shows how to detect SIGINT in a MEX file. Letting a MEX call the external program might work (although I'm not sure about the details yet). However, it still requires Ctrl + C to stop the program. How can I send the SIGINT via push button in my GUI?
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如果您在 Cygwin 中启动外部程序，那么 Cygwin 将为它提供一个 PID。使用此 PID，您可以使用 Cygwin 的终止命令向进程发送信号。因此从 Cygwin 启动该程序。在 MATLAB 中，您可以使用
!ps（其中 ! 表示调用外部 shell 命令）获取 Cygwin PID 列表，然后使用!kill -s signal pid将信号发送到程序。要从 MATLAB GUI 实现这一点，请让某个按钮的回调调用!kill。If you start your external program in Cygwin, then Cygwin will give it a PID. Using this PID you can use Cygwin's kill command to send signals to the process. So start the program from Cygwin. In MATLAB you can use
!ps(where ! means call external shell command) to get a list of Cygwin PID's and then!kill -s signal pidto send a signal to the program. To make it happen from a MATLAB GUI let the callback from some button call!kill.