How to obtain the consumption memory of running "exe"

Question

Hello,my friend.

I'm developing an "Online Judge System",like SGU "http://acm.sgu.ru/"

I wangt to obtain the accurate consumption memory of running ".exe"(.c/.cpp-->.exe) using Java.

Process : submit code-->hello.cpp/.c--compile-->hello.exe--run-->results

I want to know how to obtain the consumption memory of running "hello.exe"

The code:

Runtime rn = Runtime.getRuntime();

Process proc =rn.exec("hello.exe");

Thank you for helping me.

Answer 1

You cannot do this using pure Java.

On a UNIX / Linux machine, you would configure your operating system to enable process accounting, then read the information logged in the "acct" file. According to the acct(5) manual entry I read, this logs "average" memory usage rather than maximum memory usage.

A Windows system is bound to be different.

Answer 2

GetProcessMemoryInfo will tell you how much memory a process is using once you have a handle open to it. Microsoft even has an example for using the function.

To get the process ID you're looking for, you will need to enumerate through all the processes in the system. Microsoft has an example that would be useful for that too.

Edit: The examples are all in C. This is the language the Win32 API was designed for. From Java, you'll either need to translate it to the JNI or find a Java package that does the same things.