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package com.oracle.truffle.api.benchmark.debug;
import org.graalvm.polyglot.Context;
import org.graalvm.polyglot.Source;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Fork;
import org.openjdk.jmh.annotations.Measurement;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.Setup;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.TearDown;
import org.openjdk.jmh.annotations.Warmup;
import com.oracle.truffle.api.debug.Debugger;
import com.oracle.truffle.api.debug.DebuggerSession;
import com.oracle.truffle.api.debug.SuspendedCallback;
import com.oracle.truffle.api.debug.SuspendedEvent;
@Warmup(iterations = 3)
@Measurement(iterations = 5)
@Fork(1)
@State(Scope.Thread)
public class DebugSpeedBench implements SuspendedCallback {
private static final String CODE_STEP = "ROOT(\n" +
" DEFINE(mediumLoop,\n" +
" LOOP(1000, STATEMENT(EXPRESSION, EXPRESSION))\n" +
" ),\n" +
" DEFINE(longLoop,\n" +
" LOOP(10000, STATEMENT(EXPRESSION), CALL(mediumLoop))\n" +
" ),\n" +
" STATEMENT(EXPRESSION),\n" +
" CALL(longLoop),\n" +
" STATEMENT(EXPRESSION)\n" +
")";
private enum ACTION {
STEP_INTO,
STEP_OVER,
STEP_OUT,
STEP_IN_OUT,
CONTINUE
}
private DebuggerSession session;
private Source source;
private Context context;
private volatile ACTION action;
@Setup
public void beforeTesting() {
source = Source.newBuilder("instrumentation-test-language", CODE_STEP, "StepTest.instr").buildLiteral();
context = Context.create();
Debugger debugger = context.getEngine().getInstruments().get("debugger").lookup(Debugger.class);
session = debugger.startSession(this);
session.suspendNextExecution();
}
@TearDown
public void afterTesting() {
if (session != null) {
session.close();
}
}
@Benchmark
public void noDebugger() {
action = ACTION.CONTINUE;
if (session != null) {
session.close();
session = null;
}
context.eval(source);
}
@Benchmark
public void debuggerNoAction() {
action = ACTION.CONTINUE;
context.eval(source);
}
@Benchmark
public void doStepInto() {
action = ACTION.STEP_INTO;
context.eval(source);
}
@Benchmark
public void doStepOver() {
action = ACTION.STEP_OVER;
context.eval(source);
}
@Benchmark
public void doStepOut() {
action = ACTION.STEP_IN_OUT;
context.eval(source);
}
@Override
public void onSuspend(SuspendedEvent event) {
switch (action) {
case STEP_INTO:
event.prepareStepInto(1);
break;
case STEP_OVER:
event.prepareStepOver(1);
break;
case STEP_OUT:
event.prepareStepOut(1);
break;
case STEP_IN_OUT:
event.prepareStepInto(1);
action = ACTION.STEP_OUT;
break;
case CONTINUE:
event.prepareContinue();
break;
}
}
}