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import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.jruby.Ruby;
import org.jruby.runtime.load.LoadServiceResourceInputStream;
public class BenchParser {
public static final int N = 1000;
public static void main(String[] args) {
try {
String file = args[0];
InputStream in = getContents(file);
int iterations = getIterations(args);
System.out.println("Parsing " + file + " " + iterations + " times");
Ruby runtime = Ruby.getGlobalRuntime();
long start = System.nanoTime();
for (int i = 0; i < iterations; i++) {
long start2 = System.nanoTime();
runtime.parseFile(file, in, null);
System.out.println("Parse took: " + seconds(start2, System.nanoTime()) + "ms");
}
System.out.println("Total parse took: " + seconds(start, System.nanoTime()) + "ms");
} catch (Exception e) {
System.err.println("Parse bench failed: " + e.getMessage());
e.printStackTrace(System.err);
}
}
private static double seconds(long start, long end) {
return (end - start) * 1.0 / 1000000.0;
}
private static int getIterations(String[] args) {
return args.length > 1 ? Integer.valueOf(args[1]) : N;
}
private static InputStream getContents(String file) throws IOException {
return new LoadServiceResourceInputStream(new FileInputStream(file));
}
}
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