static void doIt(String toParse, BufferedWriter fw, SimpleNode optNode) throws Exception {
long[] testArray = new long[10];
double d = 0;
DoubleStack stack = new DoubleStack();
for (int j = 0; j < 10; j++) {
Thread.yield();
long start = System.currentTimeMillis();
for (int i = 0; i < 100000; i++) {
d = optNode.getValue();
}
testArray[j] = System.currentTimeMillis() - start;
}
fw.write("100000 evaluations: ");
for (int j = 0; j < 10; j++) {
fw.write(testArray[j] + ", ");
}
fw.write("\n");
}
public static void main(String[] args) throws Exception {
Date startTime = new Date();
parseParams(args);
File inFile = new File((String) params.get("-file"));
File logFile = new File((String) params.get("-logfile"));
BufferedReader fr = new BufferedReader(new FileReader(inFile));
BufferedWriter fw = new BufferedWriter(new FileWriter(logFile));
jep.addStandardConstants();
jep.addStandardFunctions();
String curLine = null;
int lines = 0;
while (null != (curLine = fr.readLine())) {
if (curLine.startsWith("#")) continue;
String description = curLine;
String toParse = fr.readLine();
double result = Double.parseDouble(fr.readLine().trim());
fw.write("Processing:" + toParse + ",\n");
fw.write("Expected: " + result + "\n");
fw.flush();
// Give enought time to the jit compiler.
double d = 0;
DoubleStack stack = new DoubleStack();
for (int i = 0; i < 1000; i++) {
jep.parseExpression(toParse);
d = jep.getValue(stack);
}
SimpleNode optNode = jep.getTopNode();
// if(Boolean.getBoolean("noopt")) {
fw.write("Not Optimized: ");
doIt(toParse, fw, optNode);
// }
// if(Boolean.getBoolean("opt")) {
ExpressionOptimizer optimizer = new ExpressionOptimizer(jep.getTopNode());
// optimizer.addConst("pi");
// optimizer.addConst("e");
optNode = optimizer.optimize();
fw.write("Optimized : ");
doIt(toParse, fw, optNode);
long[] testArray = new long[10];
for (int j = 0; j < 10; j++) {
Thread.yield();
long start = System.currentTimeMillis();
for (int i = 0; i < 1000; i++) {
jep.parseExpression(toParse);
}
testArray[j] = System.currentTimeMillis() - start;
}
fw.write("1000 parses: ");
for (int j = 0; j < 10; j++) {
fw.write(testArray[j] + ", ");
}
fw.write("\n");
fw.write(d + "\n_____________________________________________________\n");
fw.flush();
// }
}
Date endTime = new Date();
fw.write("Start time: " + startTime + "\n");
fw.write("End time: " + endTime + "\n");
fw.write("Total time: " + (endTime.getTime() - startTime.getTime()) + " ms");
fw.close();
}
