Search code examples
javajavascriptscriptingrhino

java scripting with mozilla rhino and memory management problem

I'm building an javascript api that will call some java objects using mozilla rhino.

Everything is good and nice, however I want to avoid unlimited looping that could slow my java application.

for example (in javascript):

while(true) doSomething(); // doSomthing will call a method in java

In modern browsers after a certain time an error appears telling the script is making the application to run slow, and if I want to continue and stop script.

I want to implement this on my java application if it's possible, but I don't know how. The only solution I can think about is to count the number of methods are being called per second , and if it's a huge number to stop the script. DO you have any other ideas?

Solution

  • Counting the method calls won't work for code that doesn't call any methods, like:

    while (true) {
    i++;
}

    I think what you want is observeInstructionCount(). Also see the discussion here - some of the stuff that they're discussing looks a little iffy, but it might help you.