• file
• revisions
• annotate
• diff
• comparison
• raw

test/tools/javac/lambda/TestLambdaToMethodStats.java@3582b62dccb2 (annotated)

test/tools/javac/lambda/TestLambdaToMethodStats.java

Mon, 10 Jun 2013 15:57:32 +0100

author

mcimadamore

date

Mon, 10 Jun 2013 15:57:32 +0100

changeset 1817

3582b62dccb2

parent 0

959103a6100f

permissions

-rw-r--r--

8013576: Add stat support to LambdaToMethod
Summary: LambdaToMethod should emit info to help diagnose/test lambda metafactory problems
Reviewed-by: jjg, vromero

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*/
aoqi@0	23
aoqi@0	24	/*
aoqi@0	25	* @test
aoqi@0	26	* @bug 8013576
aoqi@0	27	* @summary Add stat support to LambdaToMethod
aoqi@0	28	* @library ../lib
aoqi@0	29	* @build JavacTestingAbstractThreadedTest
aoqi@0	30	* @run main/othervm TestLambdaToMethodStats
aoqi@0	31	*/
aoqi@0	32
aoqi@0	33	// use /othervm to avoid jtreg timeout issues (CODETOOLS-7900047)
aoqi@0	34	// see JDK-8006746
aoqi@0	35
aoqi@0	36	import java.net.URI;
aoqi@0	37	import java.util.Arrays;
aoqi@0	38
aoqi@0	39	import javax.tools.Diagnostic;
aoqi@0	40	import javax.tools.JavaFileObject;
aoqi@0	41	import javax.tools.SimpleJavaFileObject;
aoqi@0	42
aoqi@0	43	import com.sun.source.util.JavacTask;
aoqi@0	44	import com.sun.tools.javac.api.ClientCodeWrapper;
aoqi@0	45	import com.sun.tools.javac.util.JCDiagnostic;
aoqi@0	46
aoqi@0	47	public class TestLambdaToMethodStats
aoqi@0	48	extends JavacTestingAbstractThreadedTest
aoqi@0	49	implements Runnable {
aoqi@0	50
aoqi@0	51	enum ExprKind {
aoqi@0	52	LAMBDA("()->null"),
aoqi@0	53	MREF1("this::g"),
aoqi@0	54	MREF2("this::h");
aoqi@0	55
aoqi@0	56	String exprStr;
aoqi@0	57
aoqi@0	58	ExprKind(String exprStr) {
aoqi@0	59	this.exprStr = exprStr;
aoqi@0	60	}
aoqi@0	61	}
aoqi@0	62
aoqi@0	63	enum TargetKind {
aoqi@0	64	IMPLICIT(""),
aoqi@0	65	SERIALIZABLE("(A & java.io.Serializable)");
aoqi@0	66
aoqi@0	67	String targetStr;
aoqi@0	68
aoqi@0	69	TargetKind(String targetStr) {
aoqi@0	70	this.targetStr = targetStr;
aoqi@0	71	}
aoqi@0	72	}
aoqi@0	73
aoqi@0	74	public static void main(String... args) throws Exception {
aoqi@0	75	for (ExprKind ek : ExprKind.values()) {
aoqi@0	76	for (TargetKind tk : TargetKind.values()) {
aoqi@0	77	pool.execute(new TestLambdaToMethodStats(ek, tk));
aoqi@0	78	}
aoqi@0	79	}
aoqi@0	80
aoqi@0	81	checkAfterExec(true);
aoqi@0	82	}
aoqi@0	83
aoqi@0	84	ExprKind ek;
aoqi@0	85	TargetKind tk;
aoqi@0	86	JavaSource source;
aoqi@0	87	DiagnosticChecker diagChecker;
aoqi@0	88
aoqi@0	89
aoqi@0	90	TestLambdaToMethodStats(ExprKind ek, TargetKind tk) {
aoqi@0	91	this.ek = ek;
aoqi@0	92	this.tk = tk;
aoqi@0	93	this.source = new JavaSource();
aoqi@0	94	this.diagChecker = new DiagnosticChecker();
aoqi@0	95	}
aoqi@0	96
aoqi@0	97	class JavaSource extends SimpleJavaFileObject {
aoqi@0	98
aoqi@0	99	String template = "interface A {\n" +
aoqi@0	100	" Object o();\n" +
aoqi@0	101	"}\n" +
aoqi@0	102	"class Test {\n" +
aoqi@0	103	" A a = #C#E;\n" +
aoqi@0	104	" Object g() { return null; }\n" +
aoqi@0	105	" Object h(Object... o) { return null; }\n" +
aoqi@0	106	"}";
aoqi@0	107
aoqi@0	108	String source;
aoqi@0	109
aoqi@0	110	public JavaSource() {
aoqi@0	111	super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
aoqi@0	112	source = template.replaceAll("#E", ek.exprStr)
aoqi@0	113	.replaceAll("#C", tk.targetStr);
aoqi@0	114	}
aoqi@0	115
aoqi@0	116	@Override
aoqi@0	117	public CharSequence getCharContent(boolean ignoreEncodingErrors) {
aoqi@0	118	return source;
aoqi@0	119	}
aoqi@0	120	}
aoqi@0	121
aoqi@0	122	public void run() {
aoqi@0	123	JavacTask ct = (JavacTask)comp.getTask(null, fm.get(), diagChecker,
aoqi@0	124	Arrays.asList("-XDdumpLambdaToMethodStats"),
aoqi@0	125	null, Arrays.asList(source));
aoqi@0	126	try {
aoqi@0	127	ct.generate();
aoqi@0	128	} catch (Throwable ex) {
aoqi@0	129	throw new
aoqi@0	130	AssertionError("Error thron when analyzing the following source:\n" +
aoqi@0	131	source.getCharContent(true));
aoqi@0	132	}
aoqi@0	133	check();
aoqi@0	134	}
aoqi@0	135
aoqi@0	136	void check() {
aoqi@0	137	checkCount.incrementAndGet();
aoqi@0	138
aoqi@0	139	boolean error = diagChecker.lambda !=
aoqi@0	140	(ek == ExprKind.LAMBDA);
aoqi@0	141
aoqi@0	142	error |= diagChecker.bridge !=
aoqi@0	143	(ek == ExprKind.MREF2);
aoqi@0	144
aoqi@0	145	error |= diagChecker.altMetafactory !=
aoqi@0	146	(tk == TargetKind.SERIALIZABLE);
aoqi@0	147
aoqi@0	148	if (error) {
aoqi@0	149	throw new AssertionError("Bad stat diagnostic found for source\n" +
aoqi@0	150	"lambda = " + diagChecker.lambda + "\n" +
aoqi@0	151	"bridge = " + diagChecker.bridge + "\n" +
aoqi@0	152	"altMF = " + diagChecker.altMetafactory + "\n" +
aoqi@0	153	source.source);
aoqi@0	154	}
aoqi@0	155	}
aoqi@0	156
aoqi@0	157	static class DiagnosticChecker
aoqi@0	158	implements javax.tools.DiagnosticListener<JavaFileObject> {
aoqi@0	159
aoqi@0	160	boolean altMetafactory;
aoqi@0	161	boolean bridge;
aoqi@0	162	boolean lambda;
aoqi@0	163
aoqi@0	164	public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
aoqi@0	165	try {
aoqi@0	166	if (diagnostic.getKind() == Diagnostic.Kind.NOTE) {
aoqi@0	167	switch (diagnostic.getCode()) {
aoqi@0	168	case "compiler.note.lambda.stat":
aoqi@0	169	lambda = true;
aoqi@0	170	break;
aoqi@0	171	case "compiler.note.mref.stat":
aoqi@0	172	lambda = false;
aoqi@0	173	bridge = false;
aoqi@0	174	break;
aoqi@0	175	case "compiler.note.mref.stat.1":
aoqi@0	176	lambda = false;
aoqi@0	177	bridge = true;
aoqi@0	178	break;
aoqi@0	179	default:
aoqi@0	180	throw new AssertionError("unexpected note: " + diagnostic.getCode());
aoqi@0	181	}
aoqi@0	182	ClientCodeWrapper.DiagnosticSourceUnwrapper dsu =
aoqi@0	183	(ClientCodeWrapper.DiagnosticSourceUnwrapper)diagnostic;
aoqi@0	184	altMetafactory = (Boolean)dsu.d.getArgs()[0];
aoqi@0	185	}
aoqi@0	186	} catch (RuntimeException t) {
aoqi@0	187	t.printStackTrace();
aoqi@0	188	throw t;
aoqi@0	189	}
aoqi@0	190	}
aoqi@0	191	}
aoqi@0	192	}