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package com.oracle.truffle.js.test.builtins;
import org.graalvm.polyglot.Context;
import org.graalvm.polyglot.Value;
import org.junit.Assert;
import org.junit.Test;
import com.oracle.truffle.js.lang.JavaScriptLanguage;
import com.oracle.truffle.js.runtime.JSContextOptions;
import com.oracle.truffle.js.test.JSTest;
public class AtomicsBuiltinsTest {
@Test
public void testNotify() {
int agentCount = 10;
try (Context context = JSTest.newContextBuilder().option(JSContextOptions.TEST262_MODE_NAME, "true").build()) {
String code = "let agentCount = " + agentCount + ";\n" //
+ "for (let i = 0; i < agentCount; i++) {\n" //
+ " $262.agent.start(`\n" //
+ " $262.agent.receiveBroadcast(function(sab) {\n" //
+ " const i32a = new Int32Array(sab);\n" //
+ " Atomics.wait(i32a, 0, 0);\n" //
+ " $262.agent.leaving();\n" //
+ " });\n" //
+ " `);\n" //
+ "}\n" //
+ "const sab = new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4);\n" //
+ "$262.agent.broadcast(sab);\n" //
+ "const i32a = new Int32Array(sab);\n" //
+ "let count = 0;\n" //
+ "while (count < agentCount) {\n" //
+ " count += Atomics.notify(i32a, 0);\n" //
+ "}\n" //
+ "count + Atomics.notify(i32a, 0);"; //
Value result = context.eval(JavaScriptLanguage.ID, code);
Assert.assertTrue(result.isNumber());
// Atomics.notify() should report all agents eventually (but not more)
Assert.assertEquals(agentCount, result.asInt());
}
}
}