Matlab函数执行的时间限制 [英] Matlab time limit for function execution

问题描述

我希望限制Matlab中函数的执行，因此，如果它在X秒内不返回答案，则该调用将被中止.
我知道使用timeout的2011 Matlab版本是可能的，但是我有2010版本的Matlab.仍然可以限制函数的执行时间吗?

I'm looking to limit the execution of function in Matlab, so if it won't return answer in X seconds the call will be aborted.
I know it's possible with the 2011 Matlab version using timeout, but I've got the 2010 version of Matlab. Is it still possible to limit the execution time of the function?

推荐答案

正如其他人指出的那样，您不能在Matlab中本地执行此操作.但是在Unix系统上在Linux或Solaris上，我以前曾使用过一些肮脏的技巧来达到预期的效果.

As others have pointed out you can't do this natively in Matlab. However on Unix systems e.g. Linux or Solaris I have previously used a bit of a dirty hack to achieve the desired effect.

与其将您的.m文件作为带有参数的函数来调用，不如将所有参数数据保存到.mat文件中并编写一个shell命令来调用Matlab并运行您的.m文件，例如myfunc.m作为独立的例程，例如

Rather than calling your .m file as a function with parameters, save all the parameter data into a .mat file and write a shell command to invoke Matlab and run your .m file e.g. myfunc.m as a standalone routine e.g.

!bash -c "ulimit -t 3;matlab -nodisplay < myfunc.m"

这会将myfunc.m限制为3秒的CPU执行时间.请注意，CPU不包括任何磁盘访问等.如果您需要其他一些行为，则可以将其他标志传递给ulimit.

This would limit myfunc.m to a CPU execution time of 3 second. Note that is CPU not including any disk access etc. There are other flags you can pass to ulimit if you need some other behaviour.

在myfunc.m中，您必须保存数据myfunc.m要返回到.mat文件，然后再次将其加载到调用程序中.有点讨厌，但我已经对其进行了测试，并且可以正常工作.注意内部ulimit命令使用bash shell.

Inside myfunc.m you'd have to save the data myfunc.m wants to return into a .mat file and load it up again in your calling program. Bit of a nasty hack but I have tested it and it works. Note the use of the bash shell for the internal ulimit command.

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